167b40dccSKalderon, Michal /* QLogic qed NIC Driver 267b40dccSKalderon, Michal * Copyright (c) 2015-2017 QLogic Corporation 367b40dccSKalderon, Michal * 467b40dccSKalderon, Michal * This software is available to you under a choice of one of two 567b40dccSKalderon, Michal * licenses. You may choose to be licensed under the terms of the GNU 667b40dccSKalderon, Michal * General Public License (GPL) Version 2, available from the file 767b40dccSKalderon, Michal * COPYING in the main directory of this source tree, or the 867b40dccSKalderon, Michal * OpenIB.org BSD license below: 967b40dccSKalderon, Michal * 1067b40dccSKalderon, Michal * Redistribution and use in source and binary forms, with or 1167b40dccSKalderon, Michal * without modification, are permitted provided that the following 1267b40dccSKalderon, Michal * conditions are met: 1367b40dccSKalderon, Michal * 1467b40dccSKalderon, Michal * - Redistributions of source code must retain the above 1567b40dccSKalderon, Michal * copyright notice, this list of conditions and the following 1667b40dccSKalderon, Michal * disclaimer. 1767b40dccSKalderon, Michal * 1867b40dccSKalderon, Michal * - Redistributions in binary form must reproduce the above 1967b40dccSKalderon, Michal * copyright notice, this list of conditions and the following 2067b40dccSKalderon, Michal * disclaimer in the documentation and /or other materials 2167b40dccSKalderon, Michal * provided with the distribution. 2267b40dccSKalderon, Michal * 2367b40dccSKalderon, Michal * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 2467b40dccSKalderon, Michal * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 2567b40dccSKalderon, Michal * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 2667b40dccSKalderon, Michal * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 2767b40dccSKalderon, Michal * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 2867b40dccSKalderon, Michal * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 2967b40dccSKalderon, Michal * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 3067b40dccSKalderon, Michal * SOFTWARE. 3167b40dccSKalderon, Michal */ 32b5c29ca7SKalderon, Michal #include <linux/if_ether.h> 33b5c29ca7SKalderon, Michal #include <linux/if_vlan.h> 3465a91a6cSKalderon, Michal #include <linux/ip.h> 3565a91a6cSKalderon, Michal #include <linux/ipv6.h> 3665a91a6cSKalderon, Michal #include <linux/spinlock.h> 3765a91a6cSKalderon, Michal #include <linux/tcp.h> 3867b40dccSKalderon, Michal #include "qed_cxt.h" 3967b40dccSKalderon, Michal #include "qed_hw.h" 40b5c29ca7SKalderon, Michal #include "qed_ll2.h" 4167b40dccSKalderon, Michal #include "qed_rdma.h" 4267b40dccSKalderon, Michal #include "qed_reg_addr.h" 4367b40dccSKalderon, Michal #include "qed_sp.h" 44d1abfd0bSMichal Kalderon #include "qed_ooo.h" 4567b40dccSKalderon, Michal 4667b40dccSKalderon, Michal #define QED_IWARP_ORD_DEFAULT 32 4767b40dccSKalderon, Michal #define QED_IWARP_IRD_DEFAULT 32 48456a5849SKalderon, Michal #define QED_IWARP_MAX_FW_MSS 4120 49456a5849SKalderon, Michal 50456a5849SKalderon, Michal #define QED_EP_SIG 0xecabcdef 51456a5849SKalderon, Michal 52456a5849SKalderon, Michal struct mpa_v2_hdr { 53456a5849SKalderon, Michal __be16 ird; 54456a5849SKalderon, Michal __be16 ord; 55456a5849SKalderon, Michal }; 56456a5849SKalderon, Michal 57456a5849SKalderon, Michal #define MPA_V2_PEER2PEER_MODEL 0x8000 58456a5849SKalderon, Michal #define MPA_V2_SEND_RTR 0x4000 /* on ird */ 59456a5849SKalderon, Michal #define MPA_V2_READ_RTR 0x4000 /* on ord */ 60456a5849SKalderon, Michal #define MPA_V2_WRITE_RTR 0x8000 61456a5849SKalderon, Michal #define MPA_V2_IRD_ORD_MASK 0x3FFF 62456a5849SKalderon, Michal 63456a5849SKalderon, Michal #define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED) 64456a5849SKalderon, Michal 65456a5849SKalderon, Michal #define QED_IWARP_INVALID_TCP_CID 0xffffffff 6667b40dccSKalderon, Michal #define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024) 6767b40dccSKalderon, Michal #define QED_IWARP_RCV_WND_SIZE_MIN (64 * 1024) 68456a5849SKalderon, Michal #define TIMESTAMP_HEADER_SIZE (12) 69456a5849SKalderon, Michal 7067b40dccSKalderon, Michal #define QED_IWARP_TS_EN BIT(0) 71456a5849SKalderon, Michal #define QED_IWARP_DA_EN BIT(1) 7267b40dccSKalderon, Michal #define QED_IWARP_PARAM_CRC_NEEDED (1) 7367b40dccSKalderon, Michal #define QED_IWARP_PARAM_P2P (1) 7467b40dccSKalderon, Michal 7567b40dccSKalderon, Michal static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 7667b40dccSKalderon, Michal u8 fw_event_code, u16 echo, 7767b40dccSKalderon, Michal union event_ring_data *data, 7867b40dccSKalderon, Michal u8 fw_return_code); 7967b40dccSKalderon, Michal 8067b40dccSKalderon, Michal /* Override devinfo with iWARP specific values */ 8167b40dccSKalderon, Michal void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn) 8267b40dccSKalderon, Michal { 8367b40dccSKalderon, Michal struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev; 8467b40dccSKalderon, Michal 8567b40dccSKalderon, Michal dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE; 8667b40dccSKalderon, Michal dev->max_qp = min_t(u32, 8767b40dccSKalderon, Michal IWARP_MAX_QPS, 88456a5849SKalderon, Michal p_hwfn->p_rdma_info->num_qps) - 89456a5849SKalderon, Michal QED_IWARP_PREALLOC_CNT; 9067b40dccSKalderon, Michal 9167b40dccSKalderon, Michal dev->max_cq = dev->max_qp; 9267b40dccSKalderon, Michal 9367b40dccSKalderon, Michal dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT; 9467b40dccSKalderon, Michal dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT; 9567b40dccSKalderon, Michal } 9667b40dccSKalderon, Michal 9767b40dccSKalderon, Michal void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 9867b40dccSKalderon, Michal { 9967b40dccSKalderon, Michal p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP; 10067b40dccSKalderon, Michal qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1); 10167b40dccSKalderon, Michal p_hwfn->b_rdma_enabled_in_prs = true; 10267b40dccSKalderon, Michal } 10367b40dccSKalderon, Michal 104456a5849SKalderon, Michal /* We have two cid maps, one for tcp which should be used only from passive 105456a5849SKalderon, Michal * syn processing and replacing a pre-allocated ep in the list. The second 106456a5849SKalderon, Michal * for active tcp and for QPs. 107456a5849SKalderon, Michal */ 10867b40dccSKalderon, Michal static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid) 10967b40dccSKalderon, Michal { 11067b40dccSKalderon, Michal cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 11167b40dccSKalderon, Michal 11267b40dccSKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->lock); 113456a5849SKalderon, Michal 114456a5849SKalderon, Michal if (cid < QED_IWARP_PREALLOC_CNT) 115456a5849SKalderon, Michal qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 116456a5849SKalderon, Michal cid); 117456a5849SKalderon, Michal else 11867b40dccSKalderon, Michal qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 119456a5849SKalderon, Michal 12067b40dccSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 12167b40dccSKalderon, Michal } 12267b40dccSKalderon, Michal 123d1abfd0bSMichal Kalderon void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 124d1abfd0bSMichal Kalderon struct iwarp_init_func_params *p_ramrod) 125d1abfd0bSMichal Kalderon { 126d1abfd0bSMichal Kalderon p_ramrod->ll2_ooo_q_index = RESC_START(p_hwfn, QED_LL2_QUEUE) + 127d1abfd0bSMichal Kalderon p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle; 128d1abfd0bSMichal Kalderon } 129d1abfd0bSMichal Kalderon 13067b40dccSKalderon, Michal static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) 13167b40dccSKalderon, Michal { 13267b40dccSKalderon, Michal int rc; 13367b40dccSKalderon, Michal 13467b40dccSKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->lock); 13567b40dccSKalderon, Michal rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); 13667b40dccSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 13767b40dccSKalderon, Michal if (rc) { 13867b40dccSKalderon, Michal DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n"); 13967b40dccSKalderon, Michal return rc; 14067b40dccSKalderon, Michal } 14167b40dccSKalderon, Michal *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 14267b40dccSKalderon, Michal 14367b40dccSKalderon, Michal rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid); 14467b40dccSKalderon, Michal if (rc) 14567b40dccSKalderon, Michal qed_iwarp_cid_cleaned(p_hwfn, *cid); 14667b40dccSKalderon, Michal 14767b40dccSKalderon, Michal return rc; 14867b40dccSKalderon, Michal } 14967b40dccSKalderon, Michal 150456a5849SKalderon, Michal static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid) 151456a5849SKalderon, Michal { 152456a5849SKalderon, Michal cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); 153456a5849SKalderon, Michal 154456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->lock); 155456a5849SKalderon, Michal qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid); 156456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 157456a5849SKalderon, Michal } 158456a5849SKalderon, Michal 159456a5849SKalderon, Michal /* This function allocates a cid for passive tcp (called from syn receive) 160456a5849SKalderon, Michal * the reason it's separate from the regular cid allocation is because it 161456a5849SKalderon, Michal * is assured that these cids already have ilt allocated. They are preallocated 162456a5849SKalderon, Michal * to ensure that we won't need to allocate memory during syn processing 163456a5849SKalderon, Michal */ 164456a5849SKalderon, Michal static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid) 165456a5849SKalderon, Michal { 166456a5849SKalderon, Michal int rc; 167456a5849SKalderon, Michal 168456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->lock); 169456a5849SKalderon, Michal 170456a5849SKalderon, Michal rc = qed_rdma_bmap_alloc_id(p_hwfn, 171456a5849SKalderon, Michal &p_hwfn->p_rdma_info->tcp_cid_map, cid); 172456a5849SKalderon, Michal 173456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->lock); 174456a5849SKalderon, Michal 175456a5849SKalderon, Michal if (rc) { 176456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 177456a5849SKalderon, Michal "can't allocate iwarp tcp cid max-count=%d\n", 178456a5849SKalderon, Michal p_hwfn->p_rdma_info->tcp_cid_map.max_count); 179456a5849SKalderon, Michal 180456a5849SKalderon, Michal *cid = QED_IWARP_INVALID_TCP_CID; 181456a5849SKalderon, Michal return rc; 182456a5849SKalderon, Michal } 183456a5849SKalderon, Michal 184456a5849SKalderon, Michal *cid += qed_cxt_get_proto_cid_start(p_hwfn, 185456a5849SKalderon, Michal p_hwfn->p_rdma_info->proto); 186456a5849SKalderon, Michal return 0; 187456a5849SKalderon, Michal } 188456a5849SKalderon, Michal 18967b40dccSKalderon, Michal int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 19067b40dccSKalderon, Michal struct qed_rdma_qp *qp, 19167b40dccSKalderon, Michal struct qed_rdma_create_qp_out_params *out_params) 19267b40dccSKalderon, Michal { 19367b40dccSKalderon, Michal struct iwarp_create_qp_ramrod_data *p_ramrod; 19467b40dccSKalderon, Michal struct qed_sp_init_data init_data; 19567b40dccSKalderon, Michal struct qed_spq_entry *p_ent; 19667b40dccSKalderon, Michal u16 physical_queue; 19767b40dccSKalderon, Michal u32 cid; 19867b40dccSKalderon, Michal int rc; 19967b40dccSKalderon, Michal 20067b40dccSKalderon, Michal qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 20167b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_SIZE, 20267b40dccSKalderon, Michal &qp->shared_queue_phys_addr, 20367b40dccSKalderon, Michal GFP_KERNEL); 20467b40dccSKalderon, Michal if (!qp->shared_queue) 20567b40dccSKalderon, Michal return -ENOMEM; 20667b40dccSKalderon, Michal 20767b40dccSKalderon, Michal out_params->sq_pbl_virt = (u8 *)qp->shared_queue + 20867b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 20967b40dccSKalderon, Michal out_params->sq_pbl_phys = qp->shared_queue_phys_addr + 21067b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; 21167b40dccSKalderon, Michal out_params->rq_pbl_virt = (u8 *)qp->shared_queue + 21267b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 21367b40dccSKalderon, Michal out_params->rq_pbl_phys = qp->shared_queue_phys_addr + 21467b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; 21567b40dccSKalderon, Michal 21667b40dccSKalderon, Michal rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 21767b40dccSKalderon, Michal if (rc) 21867b40dccSKalderon, Michal goto err1; 21967b40dccSKalderon, Michal 22067b40dccSKalderon, Michal qp->icid = (u16)cid; 22167b40dccSKalderon, Michal 22267b40dccSKalderon, Michal memset(&init_data, 0, sizeof(init_data)); 22367b40dccSKalderon, Michal init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 22467b40dccSKalderon, Michal init_data.cid = qp->icid; 22567b40dccSKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 22667b40dccSKalderon, Michal 22767b40dccSKalderon, Michal rc = qed_sp_init_request(p_hwfn, &p_ent, 22867b40dccSKalderon, Michal IWARP_RAMROD_CMD_ID_CREATE_QP, 22967b40dccSKalderon, Michal PROTOCOLID_IWARP, &init_data); 23067b40dccSKalderon, Michal if (rc) 23167b40dccSKalderon, Michal goto err2; 23267b40dccSKalderon, Michal 23367b40dccSKalderon, Michal p_ramrod = &p_ent->ramrod.iwarp_create_qp; 23467b40dccSKalderon, Michal 23567b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, 23667b40dccSKalderon, Michal IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN, 23767b40dccSKalderon, Michal qp->fmr_and_reserved_lkey); 23867b40dccSKalderon, Michal 23967b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, 24067b40dccSKalderon, Michal IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all); 24167b40dccSKalderon, Michal 24267b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, 24367b40dccSKalderon, Michal IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN, 24467b40dccSKalderon, Michal qp->incoming_rdma_read_en); 24567b40dccSKalderon, Michal 24667b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, 24767b40dccSKalderon, Michal IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN, 24867b40dccSKalderon, Michal qp->incoming_rdma_write_en); 24967b40dccSKalderon, Michal 25067b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, 25167b40dccSKalderon, Michal IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN, 25267b40dccSKalderon, Michal qp->incoming_atomic_en); 25367b40dccSKalderon, Michal 25467b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, 25567b40dccSKalderon, Michal IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq); 25667b40dccSKalderon, Michal 25767b40dccSKalderon, Michal p_ramrod->pd = qp->pd; 25867b40dccSKalderon, Michal p_ramrod->sq_num_pages = qp->sq_num_pages; 25967b40dccSKalderon, Michal p_ramrod->rq_num_pages = qp->rq_num_pages; 26067b40dccSKalderon, Michal 26167b40dccSKalderon, Michal p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi); 26267b40dccSKalderon, Michal p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo); 26367b40dccSKalderon, Michal 26467b40dccSKalderon, Michal p_ramrod->cq_cid_for_sq = 26567b40dccSKalderon, Michal cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); 26667b40dccSKalderon, Michal p_ramrod->cq_cid_for_rq = 26767b40dccSKalderon, Michal cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id); 26867b40dccSKalderon, Michal 26967b40dccSKalderon, Michal p_ramrod->dpi = cpu_to_le16(qp->dpi); 27067b40dccSKalderon, Michal 27167b40dccSKalderon, Michal physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 27267b40dccSKalderon, Michal p_ramrod->physical_q0 = cpu_to_le16(physical_queue); 27367b40dccSKalderon, Michal physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 27467b40dccSKalderon, Michal p_ramrod->physical_q1 = cpu_to_le16(physical_queue); 27567b40dccSKalderon, Michal 27667b40dccSKalderon, Michal rc = qed_spq_post(p_hwfn, p_ent, NULL); 27767b40dccSKalderon, Michal if (rc) 27867b40dccSKalderon, Michal goto err2; 27967b40dccSKalderon, Michal 28067b40dccSKalderon, Michal return rc; 28167b40dccSKalderon, Michal 28267b40dccSKalderon, Michal err2: 28367b40dccSKalderon, Michal qed_iwarp_cid_cleaned(p_hwfn, cid); 28467b40dccSKalderon, Michal err1: 28567b40dccSKalderon, Michal dma_free_coherent(&p_hwfn->cdev->pdev->dev, 28667b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_SIZE, 28767b40dccSKalderon, Michal qp->shared_queue, qp->shared_queue_phys_addr); 28867b40dccSKalderon, Michal 28967b40dccSKalderon, Michal return rc; 29067b40dccSKalderon, Michal } 29167b40dccSKalderon, Michal 29267b40dccSKalderon, Michal static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 29367b40dccSKalderon, Michal { 29467b40dccSKalderon, Michal struct iwarp_modify_qp_ramrod_data *p_ramrod; 29567b40dccSKalderon, Michal struct qed_sp_init_data init_data; 29667b40dccSKalderon, Michal struct qed_spq_entry *p_ent; 29767b40dccSKalderon, Michal int rc; 29867b40dccSKalderon, Michal 29967b40dccSKalderon, Michal /* Get SPQ entry */ 30067b40dccSKalderon, Michal memset(&init_data, 0, sizeof(init_data)); 30167b40dccSKalderon, Michal init_data.cid = qp->icid; 30267b40dccSKalderon, Michal init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 30367b40dccSKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 30467b40dccSKalderon, Michal 30567b40dccSKalderon, Michal rc = qed_sp_init_request(p_hwfn, &p_ent, 30667b40dccSKalderon, Michal IWARP_RAMROD_CMD_ID_MODIFY_QP, 30767b40dccSKalderon, Michal p_hwfn->p_rdma_info->proto, &init_data); 30867b40dccSKalderon, Michal if (rc) 30967b40dccSKalderon, Michal return rc; 31067b40dccSKalderon, Michal 31167b40dccSKalderon, Michal p_ramrod = &p_ent->ramrod.iwarp_modify_qp; 31267b40dccSKalderon, Michal SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 31367b40dccSKalderon, Michal 0x1); 31467b40dccSKalderon, Michal if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING) 31567b40dccSKalderon, Michal p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING; 31667b40dccSKalderon, Michal else 31767b40dccSKalderon, Michal p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR; 31867b40dccSKalderon, Michal 31967b40dccSKalderon, Michal rc = qed_spq_post(p_hwfn, p_ent, NULL); 32067b40dccSKalderon, Michal 32167b40dccSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc); 32267b40dccSKalderon, Michal 32367b40dccSKalderon, Michal return rc; 32467b40dccSKalderon, Michal } 32567b40dccSKalderon, Michal 32667b40dccSKalderon, Michal enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state) 32767b40dccSKalderon, Michal { 32867b40dccSKalderon, Michal switch (state) { 32967b40dccSKalderon, Michal case QED_ROCE_QP_STATE_RESET: 33067b40dccSKalderon, Michal case QED_ROCE_QP_STATE_INIT: 33167b40dccSKalderon, Michal case QED_ROCE_QP_STATE_RTR: 33267b40dccSKalderon, Michal return QED_IWARP_QP_STATE_IDLE; 33367b40dccSKalderon, Michal case QED_ROCE_QP_STATE_RTS: 33467b40dccSKalderon, Michal return QED_IWARP_QP_STATE_RTS; 33567b40dccSKalderon, Michal case QED_ROCE_QP_STATE_SQD: 33667b40dccSKalderon, Michal return QED_IWARP_QP_STATE_CLOSING; 33767b40dccSKalderon, Michal case QED_ROCE_QP_STATE_ERR: 33867b40dccSKalderon, Michal return QED_IWARP_QP_STATE_ERROR; 33967b40dccSKalderon, Michal case QED_ROCE_QP_STATE_SQE: 34067b40dccSKalderon, Michal return QED_IWARP_QP_STATE_TERMINATE; 34167b40dccSKalderon, Michal default: 34267b40dccSKalderon, Michal return QED_IWARP_QP_STATE_ERROR; 34367b40dccSKalderon, Michal } 34467b40dccSKalderon, Michal } 34567b40dccSKalderon, Michal 34667b40dccSKalderon, Michal static enum qed_roce_qp_state 34767b40dccSKalderon, Michal qed_iwarp2roce_state(enum qed_iwarp_qp_state state) 34867b40dccSKalderon, Michal { 34967b40dccSKalderon, Michal switch (state) { 35067b40dccSKalderon, Michal case QED_IWARP_QP_STATE_IDLE: 35167b40dccSKalderon, Michal return QED_ROCE_QP_STATE_INIT; 35267b40dccSKalderon, Michal case QED_IWARP_QP_STATE_RTS: 35367b40dccSKalderon, Michal return QED_ROCE_QP_STATE_RTS; 35467b40dccSKalderon, Michal case QED_IWARP_QP_STATE_TERMINATE: 35567b40dccSKalderon, Michal return QED_ROCE_QP_STATE_SQE; 35667b40dccSKalderon, Michal case QED_IWARP_QP_STATE_CLOSING: 35767b40dccSKalderon, Michal return QED_ROCE_QP_STATE_SQD; 35867b40dccSKalderon, Michal case QED_IWARP_QP_STATE_ERROR: 35967b40dccSKalderon, Michal return QED_ROCE_QP_STATE_ERR; 36067b40dccSKalderon, Michal default: 36167b40dccSKalderon, Michal return QED_ROCE_QP_STATE_ERR; 36267b40dccSKalderon, Michal } 36367b40dccSKalderon, Michal } 36467b40dccSKalderon, Michal 36567b40dccSKalderon, Michal const char *iwarp_state_names[] = { 36667b40dccSKalderon, Michal "IDLE", 36767b40dccSKalderon, Michal "RTS", 36867b40dccSKalderon, Michal "TERMINATE", 36967b40dccSKalderon, Michal "CLOSING", 37067b40dccSKalderon, Michal "ERROR", 37167b40dccSKalderon, Michal }; 37267b40dccSKalderon, Michal 37367b40dccSKalderon, Michal int 37467b40dccSKalderon, Michal qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, 37567b40dccSKalderon, Michal struct qed_rdma_qp *qp, 37667b40dccSKalderon, Michal enum qed_iwarp_qp_state new_state, bool internal) 37767b40dccSKalderon, Michal { 37867b40dccSKalderon, Michal enum qed_iwarp_qp_state prev_iw_state; 37967b40dccSKalderon, Michal bool modify_fw = false; 38067b40dccSKalderon, Michal int rc = 0; 38167b40dccSKalderon, Michal 38267b40dccSKalderon, Michal /* modify QP can be called from upper-layer or as a result of async 38367b40dccSKalderon, Michal * RST/FIN... therefore need to protect 38467b40dccSKalderon, Michal */ 38567b40dccSKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 38667b40dccSKalderon, Michal prev_iw_state = qp->iwarp_state; 38767b40dccSKalderon, Michal 38867b40dccSKalderon, Michal if (prev_iw_state == new_state) { 38967b40dccSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 39067b40dccSKalderon, Michal return 0; 39167b40dccSKalderon, Michal } 39267b40dccSKalderon, Michal 39367b40dccSKalderon, Michal switch (prev_iw_state) { 39467b40dccSKalderon, Michal case QED_IWARP_QP_STATE_IDLE: 39567b40dccSKalderon, Michal switch (new_state) { 39667b40dccSKalderon, Michal case QED_IWARP_QP_STATE_RTS: 39767b40dccSKalderon, Michal qp->iwarp_state = QED_IWARP_QP_STATE_RTS; 39867b40dccSKalderon, Michal break; 39967b40dccSKalderon, Michal case QED_IWARP_QP_STATE_ERROR: 40067b40dccSKalderon, Michal qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 40167b40dccSKalderon, Michal if (!internal) 40267b40dccSKalderon, Michal modify_fw = true; 40367b40dccSKalderon, Michal break; 40467b40dccSKalderon, Michal default: 40567b40dccSKalderon, Michal break; 40667b40dccSKalderon, Michal } 40767b40dccSKalderon, Michal break; 40867b40dccSKalderon, Michal case QED_IWARP_QP_STATE_RTS: 40967b40dccSKalderon, Michal switch (new_state) { 41067b40dccSKalderon, Michal case QED_IWARP_QP_STATE_CLOSING: 41167b40dccSKalderon, Michal if (!internal) 41267b40dccSKalderon, Michal modify_fw = true; 41367b40dccSKalderon, Michal 41467b40dccSKalderon, Michal qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING; 41567b40dccSKalderon, Michal break; 41667b40dccSKalderon, Michal case QED_IWARP_QP_STATE_ERROR: 41767b40dccSKalderon, Michal if (!internal) 41867b40dccSKalderon, Michal modify_fw = true; 41967b40dccSKalderon, Michal qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; 42067b40dccSKalderon, Michal break; 42167b40dccSKalderon, Michal default: 42267b40dccSKalderon, Michal break; 42367b40dccSKalderon, Michal } 42467b40dccSKalderon, Michal break; 42567b40dccSKalderon, Michal case QED_IWARP_QP_STATE_ERROR: 42667b40dccSKalderon, Michal switch (new_state) { 42767b40dccSKalderon, Michal case QED_IWARP_QP_STATE_IDLE: 42867b40dccSKalderon, Michal 42967b40dccSKalderon, Michal qp->iwarp_state = new_state; 43067b40dccSKalderon, Michal break; 43167b40dccSKalderon, Michal case QED_IWARP_QP_STATE_CLOSING: 43267b40dccSKalderon, Michal /* could happen due to race... do nothing.... */ 43367b40dccSKalderon, Michal break; 43467b40dccSKalderon, Michal default: 43567b40dccSKalderon, Michal rc = -EINVAL; 43667b40dccSKalderon, Michal } 43767b40dccSKalderon, Michal break; 43867b40dccSKalderon, Michal case QED_IWARP_QP_STATE_TERMINATE: 43967b40dccSKalderon, Michal case QED_IWARP_QP_STATE_CLOSING: 44067b40dccSKalderon, Michal qp->iwarp_state = new_state; 44167b40dccSKalderon, Michal break; 44267b40dccSKalderon, Michal default: 44367b40dccSKalderon, Michal break; 44467b40dccSKalderon, Michal } 44567b40dccSKalderon, Michal 44667b40dccSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n", 44767b40dccSKalderon, Michal qp->icid, 44867b40dccSKalderon, Michal iwarp_state_names[prev_iw_state], 44967b40dccSKalderon, Michal iwarp_state_names[qp->iwarp_state], 45067b40dccSKalderon, Michal internal ? "internal" : ""); 45167b40dccSKalderon, Michal 45267b40dccSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); 45367b40dccSKalderon, Michal 45467b40dccSKalderon, Michal if (modify_fw) 45567b40dccSKalderon, Michal rc = qed_iwarp_modify_fw(p_hwfn, qp); 45667b40dccSKalderon, Michal 45767b40dccSKalderon, Michal return rc; 45867b40dccSKalderon, Michal } 45967b40dccSKalderon, Michal 46067b40dccSKalderon, Michal int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 46167b40dccSKalderon, Michal { 46267b40dccSKalderon, Michal struct qed_sp_init_data init_data; 46367b40dccSKalderon, Michal struct qed_spq_entry *p_ent; 46467b40dccSKalderon, Michal int rc; 46567b40dccSKalderon, Michal 46667b40dccSKalderon, Michal /* Get SPQ entry */ 46767b40dccSKalderon, Michal memset(&init_data, 0, sizeof(init_data)); 46867b40dccSKalderon, Michal init_data.cid = qp->icid; 46967b40dccSKalderon, Michal init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 47067b40dccSKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 47167b40dccSKalderon, Michal 47267b40dccSKalderon, Michal rc = qed_sp_init_request(p_hwfn, &p_ent, 47367b40dccSKalderon, Michal IWARP_RAMROD_CMD_ID_DESTROY_QP, 47467b40dccSKalderon, Michal p_hwfn->p_rdma_info->proto, &init_data); 47567b40dccSKalderon, Michal if (rc) 47667b40dccSKalderon, Michal return rc; 47767b40dccSKalderon, Michal 47867b40dccSKalderon, Michal rc = qed_spq_post(p_hwfn, p_ent, NULL); 47967b40dccSKalderon, Michal 48067b40dccSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc); 48167b40dccSKalderon, Michal 48267b40dccSKalderon, Michal return rc; 48367b40dccSKalderon, Michal } 48467b40dccSKalderon, Michal 485456a5849SKalderon, Michal static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn, 486456a5849SKalderon, Michal struct qed_iwarp_ep *ep, 487456a5849SKalderon, Michal bool remove_from_active_list) 488456a5849SKalderon, Michal { 489456a5849SKalderon, Michal dma_free_coherent(&p_hwfn->cdev->pdev->dev, 490456a5849SKalderon, Michal sizeof(*ep->ep_buffer_virt), 491456a5849SKalderon, Michal ep->ep_buffer_virt, ep->ep_buffer_phys); 492456a5849SKalderon, Michal 493456a5849SKalderon, Michal if (remove_from_active_list) { 494456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 495456a5849SKalderon, Michal list_del(&ep->list_entry); 496456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 497456a5849SKalderon, Michal } 498456a5849SKalderon, Michal 499456a5849SKalderon, Michal if (ep->qp) 500456a5849SKalderon, Michal ep->qp->ep = NULL; 501456a5849SKalderon, Michal 502456a5849SKalderon, Michal kfree(ep); 503456a5849SKalderon, Michal } 504456a5849SKalderon, Michal 50567b40dccSKalderon, Michal int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) 50667b40dccSKalderon, Michal { 507fc4c6065SKalderon, Michal struct qed_iwarp_ep *ep = qp->ep; 508fc4c6065SKalderon, Michal int wait_count = 0; 50967b40dccSKalderon, Michal int rc = 0; 51067b40dccSKalderon, Michal 51167b40dccSKalderon, Michal if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) { 51267b40dccSKalderon, Michal rc = qed_iwarp_modify_qp(p_hwfn, qp, 51367b40dccSKalderon, Michal QED_IWARP_QP_STATE_ERROR, false); 51467b40dccSKalderon, Michal if (rc) 51567b40dccSKalderon, Michal return rc; 51667b40dccSKalderon, Michal } 51767b40dccSKalderon, Michal 518fc4c6065SKalderon, Michal /* Make sure ep is closed before returning and freeing memory. */ 519fc4c6065SKalderon, Michal if (ep) { 520fc4c6065SKalderon, Michal while (ep->state != QED_IWARP_EP_CLOSED && wait_count++ < 200) 521fc4c6065SKalderon, Michal msleep(100); 522fc4c6065SKalderon, Michal 523fc4c6065SKalderon, Michal if (ep->state != QED_IWARP_EP_CLOSED) 524fc4c6065SKalderon, Michal DP_NOTICE(p_hwfn, "ep state close timeout state=%x\n", 525fc4c6065SKalderon, Michal ep->state); 526fc4c6065SKalderon, Michal 527fc4c6065SKalderon, Michal qed_iwarp_destroy_ep(p_hwfn, ep, false); 528fc4c6065SKalderon, Michal } 529fc4c6065SKalderon, Michal 53067b40dccSKalderon, Michal rc = qed_iwarp_fw_destroy(p_hwfn, qp); 53167b40dccSKalderon, Michal 53267b40dccSKalderon, Michal if (qp->shared_queue) 53367b40dccSKalderon, Michal dma_free_coherent(&p_hwfn->cdev->pdev->dev, 53467b40dccSKalderon, Michal IWARP_SHARED_QUEUE_PAGE_SIZE, 53567b40dccSKalderon, Michal qp->shared_queue, qp->shared_queue_phys_addr); 53667b40dccSKalderon, Michal 53767b40dccSKalderon, Michal return rc; 53867b40dccSKalderon, Michal } 53967b40dccSKalderon, Michal 540456a5849SKalderon, Michal static int 541456a5849SKalderon, Michal qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out) 542456a5849SKalderon, Michal { 543456a5849SKalderon, Michal struct qed_iwarp_ep *ep; 544456a5849SKalderon, Michal int rc; 545456a5849SKalderon, Michal 546456a5849SKalderon, Michal ep = kzalloc(sizeof(*ep), GFP_KERNEL); 547456a5849SKalderon, Michal if (!ep) 548456a5849SKalderon, Michal return -ENOMEM; 549456a5849SKalderon, Michal 550456a5849SKalderon, Michal ep->state = QED_IWARP_EP_INIT; 551456a5849SKalderon, Michal 552456a5849SKalderon, Michal ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 553456a5849SKalderon, Michal sizeof(*ep->ep_buffer_virt), 554456a5849SKalderon, Michal &ep->ep_buffer_phys, 555456a5849SKalderon, Michal GFP_KERNEL); 556456a5849SKalderon, Michal if (!ep->ep_buffer_virt) { 557456a5849SKalderon, Michal rc = -ENOMEM; 558456a5849SKalderon, Michal goto err; 559456a5849SKalderon, Michal } 560456a5849SKalderon, Michal 561456a5849SKalderon, Michal ep->sig = QED_EP_SIG; 562456a5849SKalderon, Michal 563456a5849SKalderon, Michal *ep_out = ep; 564456a5849SKalderon, Michal 565456a5849SKalderon, Michal return 0; 566456a5849SKalderon, Michal 567456a5849SKalderon, Michal err: 568456a5849SKalderon, Michal kfree(ep); 569456a5849SKalderon, Michal return rc; 570456a5849SKalderon, Michal } 571456a5849SKalderon, Michal 572456a5849SKalderon, Michal static void 573456a5849SKalderon, Michal qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn, 574456a5849SKalderon, Michal struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod) 575456a5849SKalderon, Michal { 576456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n", 577456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_mac_addr_lo, 578456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_mac_addr_mid, 579456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_mac_addr_hi, 580456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_mac_addr_lo, 581456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_mac_addr_mid, 582456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_mac_addr_hi); 583456a5849SKalderon, Michal 584456a5849SKalderon, Michal if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) { 585456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 58691d1ae47SKalderon, Michal "local_ip=%pI4h:%x, remote_ip=%pI4h:%x, vlan=%x\n", 587456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_ip, 588456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_port, 589456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_ip, 590456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_port, 591456a5849SKalderon, Michal p_tcp_ramrod->tcp.vlan_id); 592456a5849SKalderon, Michal } else { 593456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 59491d1ae47SKalderon, Michal "local_ip=%pI6:%x, remote_ip=%pI6:%x, vlan=%x\n", 595456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_ip, 596456a5849SKalderon, Michal p_tcp_ramrod->tcp.local_port, 597456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_ip, 598456a5849SKalderon, Michal p_tcp_ramrod->tcp.remote_port, 599456a5849SKalderon, Michal p_tcp_ramrod->tcp.vlan_id); 600456a5849SKalderon, Michal } 601456a5849SKalderon, Michal 602456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 603456a5849SKalderon, Michal "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n", 604456a5849SKalderon, Michal p_tcp_ramrod->tcp.flow_label, 605456a5849SKalderon, Michal p_tcp_ramrod->tcp.ttl, 606456a5849SKalderon, Michal p_tcp_ramrod->tcp.tos_or_tc, 607456a5849SKalderon, Michal p_tcp_ramrod->tcp.mss, 608456a5849SKalderon, Michal p_tcp_ramrod->tcp.rcv_wnd_scale, 609456a5849SKalderon, Michal p_tcp_ramrod->tcp.connect_mode, 610456a5849SKalderon, Michal p_tcp_ramrod->tcp.flags); 611456a5849SKalderon, Michal 612456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n", 613456a5849SKalderon, Michal p_tcp_ramrod->tcp.syn_ip_payload_length, 614456a5849SKalderon, Michal p_tcp_ramrod->tcp.syn_phy_addr_lo, 615456a5849SKalderon, Michal p_tcp_ramrod->tcp.syn_phy_addr_hi); 616456a5849SKalderon, Michal } 617456a5849SKalderon, Michal 618456a5849SKalderon, Michal static int 619456a5849SKalderon, Michal qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 620456a5849SKalderon, Michal { 621456a5849SKalderon, Michal struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 622456a5849SKalderon, Michal struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod; 623456a5849SKalderon, Michal struct tcp_offload_params_opt2 *tcp; 624456a5849SKalderon, Michal struct qed_sp_init_data init_data; 625456a5849SKalderon, Michal struct qed_spq_entry *p_ent; 626456a5849SKalderon, Michal dma_addr_t async_output_phys; 627456a5849SKalderon, Michal dma_addr_t in_pdata_phys; 628456a5849SKalderon, Michal u16 physical_q; 629456a5849SKalderon, Michal u8 tcp_flags; 630456a5849SKalderon, Michal int rc; 631456a5849SKalderon, Michal int i; 632456a5849SKalderon, Michal 633456a5849SKalderon, Michal memset(&init_data, 0, sizeof(init_data)); 634456a5849SKalderon, Michal init_data.cid = ep->tcp_cid; 635456a5849SKalderon, Michal init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 6364b0fdd7cSKalderon, Michal if (ep->connect_mode == TCP_CONNECT_PASSIVE) 637456a5849SKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_CB; 6384b0fdd7cSKalderon, Michal else 6394b0fdd7cSKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 640456a5849SKalderon, Michal 641456a5849SKalderon, Michal rc = qed_sp_init_request(p_hwfn, &p_ent, 642456a5849SKalderon, Michal IWARP_RAMROD_CMD_ID_TCP_OFFLOAD, 643456a5849SKalderon, Michal PROTOCOLID_IWARP, &init_data); 644456a5849SKalderon, Michal if (rc) 645456a5849SKalderon, Michal return rc; 646456a5849SKalderon, Michal 647456a5849SKalderon, Michal p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload; 648456a5849SKalderon, Michal 649456a5849SKalderon, Michal in_pdata_phys = ep->ep_buffer_phys + 650456a5849SKalderon, Michal offsetof(struct qed_iwarp_ep_memory, in_pdata); 651456a5849SKalderon, Michal DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr, 652456a5849SKalderon, Michal in_pdata_phys); 653456a5849SKalderon, Michal 654456a5849SKalderon, Michal p_tcp_ramrod->iwarp.incoming_ulp_buffer.len = 655456a5849SKalderon, Michal cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 656456a5849SKalderon, Michal 657456a5849SKalderon, Michal async_output_phys = ep->ep_buffer_phys + 658456a5849SKalderon, Michal offsetof(struct qed_iwarp_ep_memory, async_output); 659456a5849SKalderon, Michal DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf, 660456a5849SKalderon, Michal async_output_phys); 661456a5849SKalderon, Michal 662456a5849SKalderon, Michal p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 663456a5849SKalderon, Michal p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 664456a5849SKalderon, Michal 665456a5849SKalderon, Michal physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); 666456a5849SKalderon, Michal p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q); 667456a5849SKalderon, Michal physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); 668456a5849SKalderon, Michal p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q); 669456a5849SKalderon, Michal p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev; 670456a5849SKalderon, Michal 671456a5849SKalderon, Michal tcp = &p_tcp_ramrod->tcp; 672456a5849SKalderon, Michal qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi, 673456a5849SKalderon, Michal &tcp->remote_mac_addr_mid, 674456a5849SKalderon, Michal &tcp->remote_mac_addr_lo, ep->remote_mac_addr); 675456a5849SKalderon, Michal qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid, 676456a5849SKalderon, Michal &tcp->local_mac_addr_lo, ep->local_mac_addr); 677456a5849SKalderon, Michal 678456a5849SKalderon, Michal tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan); 679456a5849SKalderon, Michal 680456a5849SKalderon, Michal tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags; 681456a5849SKalderon, Michal tcp->flags = 0; 682456a5849SKalderon, Michal SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN, 683456a5849SKalderon, Michal !!(tcp_flags & QED_IWARP_TS_EN)); 684456a5849SKalderon, Michal 685456a5849SKalderon, Michal SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN, 686456a5849SKalderon, Michal !!(tcp_flags & QED_IWARP_DA_EN)); 687456a5849SKalderon, Michal 688456a5849SKalderon, Michal tcp->ip_version = ep->cm_info.ip_version; 689456a5849SKalderon, Michal 690456a5849SKalderon, Michal for (i = 0; i < 4; i++) { 691456a5849SKalderon, Michal tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]); 692456a5849SKalderon, Michal tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]); 693456a5849SKalderon, Michal } 694456a5849SKalderon, Michal 695456a5849SKalderon, Michal tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port); 696456a5849SKalderon, Michal tcp->local_port = cpu_to_le16(ep->cm_info.local_port); 697456a5849SKalderon, Michal tcp->mss = cpu_to_le16(ep->mss); 698456a5849SKalderon, Michal tcp->flow_label = 0; 699456a5849SKalderon, Michal tcp->ttl = 0x40; 700456a5849SKalderon, Michal tcp->tos_or_tc = 0; 701456a5849SKalderon, Michal 702456a5849SKalderon, Michal tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale; 703456a5849SKalderon, Michal tcp->connect_mode = ep->connect_mode; 704456a5849SKalderon, Michal 705456a5849SKalderon, Michal if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 706456a5849SKalderon, Michal tcp->syn_ip_payload_length = 707456a5849SKalderon, Michal cpu_to_le16(ep->syn_ip_payload_length); 708456a5849SKalderon, Michal tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr); 709456a5849SKalderon, Michal tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr); 710456a5849SKalderon, Michal } 711456a5849SKalderon, Michal 712456a5849SKalderon, Michal qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod); 713456a5849SKalderon, Michal 714456a5849SKalderon, Michal rc = qed_spq_post(p_hwfn, p_ent, NULL); 715456a5849SKalderon, Michal 716456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 717456a5849SKalderon, Michal "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc); 718456a5849SKalderon, Michal 719456a5849SKalderon, Michal return rc; 720456a5849SKalderon, Michal } 721456a5849SKalderon, Michal 722456a5849SKalderon, Michal static void 723456a5849SKalderon, Michal qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 724456a5849SKalderon, Michal { 725456a5849SKalderon, Michal struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 726456a5849SKalderon, Michal struct qed_iwarp_cm_event_params params; 727456a5849SKalderon, Michal struct mpa_v2_hdr *mpa_v2; 728456a5849SKalderon, Michal union async_output *async_data; 729456a5849SKalderon, Michal u16 mpa_ord, mpa_ird; 730456a5849SKalderon, Michal u8 mpa_hdr_size = 0; 731456a5849SKalderon, Michal u8 mpa_rev; 732456a5849SKalderon, Michal 733456a5849SKalderon, Michal async_data = &ep->ep_buffer_virt->async_output; 734456a5849SKalderon, Michal 735456a5849SKalderon, Michal mpa_rev = async_data->mpa_request.mpa_handshake_mode; 736456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 737456a5849SKalderon, Michal "private_data_len=%x handshake_mode=%x private_data=(%x)\n", 738456a5849SKalderon, Michal async_data->mpa_request.ulp_data_len, 7394b0fdd7cSKalderon, Michal mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata))); 740456a5849SKalderon, Michal 741456a5849SKalderon, Michal if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 742456a5849SKalderon, Michal /* Read ord/ird values from private data buffer */ 743456a5849SKalderon, Michal mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata; 744456a5849SKalderon, Michal mpa_hdr_size = sizeof(*mpa_v2); 745456a5849SKalderon, Michal 746456a5849SKalderon, Michal mpa_ord = ntohs(mpa_v2->ord); 747456a5849SKalderon, Michal mpa_ird = ntohs(mpa_v2->ird); 748456a5849SKalderon, Michal 749456a5849SKalderon, Michal /* Temprary store in cm_info incoming ord/ird requested, later 750456a5849SKalderon, Michal * replace with negotiated value during accept 751456a5849SKalderon, Michal */ 752456a5849SKalderon, Michal ep->cm_info.ord = (u8)min_t(u16, 753456a5849SKalderon, Michal (mpa_ord & MPA_V2_IRD_ORD_MASK), 754456a5849SKalderon, Michal QED_IWARP_ORD_DEFAULT); 755456a5849SKalderon, Michal 756456a5849SKalderon, Michal ep->cm_info.ird = (u8)min_t(u16, 757456a5849SKalderon, Michal (mpa_ird & MPA_V2_IRD_ORD_MASK), 758456a5849SKalderon, Michal QED_IWARP_IRD_DEFAULT); 759456a5849SKalderon, Michal 760456a5849SKalderon, Michal /* Peer2Peer negotiation */ 761456a5849SKalderon, Michal ep->rtr_type = MPA_RTR_TYPE_NONE; 762456a5849SKalderon, Michal if (mpa_ird & MPA_V2_PEER2PEER_MODEL) { 763456a5849SKalderon, Michal if (mpa_ord & MPA_V2_WRITE_RTR) 764456a5849SKalderon, Michal ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE; 765456a5849SKalderon, Michal 766456a5849SKalderon, Michal if (mpa_ord & MPA_V2_READ_RTR) 767456a5849SKalderon, Michal ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ; 768456a5849SKalderon, Michal 769456a5849SKalderon, Michal if (mpa_ird & MPA_V2_SEND_RTR) 770456a5849SKalderon, Michal ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND; 771456a5849SKalderon, Michal 772456a5849SKalderon, Michal ep->rtr_type &= iwarp_info->rtr_type; 773456a5849SKalderon, Michal 774456a5849SKalderon, Michal /* if we're left with no match send our capabilities */ 775456a5849SKalderon, Michal if (ep->rtr_type == MPA_RTR_TYPE_NONE) 776456a5849SKalderon, Michal ep->rtr_type = iwarp_info->rtr_type; 777456a5849SKalderon, Michal } 778456a5849SKalderon, Michal 779456a5849SKalderon, Michal ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 780456a5849SKalderon, Michal } else { 781456a5849SKalderon, Michal ep->cm_info.ord = QED_IWARP_ORD_DEFAULT; 782456a5849SKalderon, Michal ep->cm_info.ird = QED_IWARP_IRD_DEFAULT; 783456a5849SKalderon, Michal ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC; 784456a5849SKalderon, Michal } 785456a5849SKalderon, Michal 786456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 787456a5849SKalderon, Michal "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n", 788456a5849SKalderon, Michal mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type, 789456a5849SKalderon, Michal async_data->mpa_request.ulp_data_len, mpa_hdr_size); 790456a5849SKalderon, Michal 791456a5849SKalderon, Michal /* Strip mpa v2 hdr from private data before sending to upper layer */ 792456a5849SKalderon, Michal ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size; 793456a5849SKalderon, Michal 794456a5849SKalderon, Michal ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len - 795456a5849SKalderon, Michal mpa_hdr_size; 796456a5849SKalderon, Michal 797456a5849SKalderon, Michal params.event = QED_IWARP_EVENT_MPA_REQUEST; 798456a5849SKalderon, Michal params.cm_info = &ep->cm_info; 799456a5849SKalderon, Michal params.ep_context = ep; 800456a5849SKalderon, Michal params.status = 0; 801456a5849SKalderon, Michal 802456a5849SKalderon, Michal ep->state = QED_IWARP_EP_MPA_REQ_RCVD; 803456a5849SKalderon, Michal ep->event_cb(ep->cb_context, ¶ms); 804456a5849SKalderon, Michal } 805456a5849SKalderon, Michal 806456a5849SKalderon, Michal static int 807456a5849SKalderon, Michal qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 808456a5849SKalderon, Michal { 809456a5849SKalderon, Michal struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod; 810456a5849SKalderon, Michal struct qed_sp_init_data init_data; 811456a5849SKalderon, Michal dma_addr_t async_output_phys; 812456a5849SKalderon, Michal struct qed_spq_entry *p_ent; 813456a5849SKalderon, Michal dma_addr_t out_pdata_phys; 814456a5849SKalderon, Michal dma_addr_t in_pdata_phys; 815456a5849SKalderon, Michal struct qed_rdma_qp *qp; 816456a5849SKalderon, Michal bool reject; 817456a5849SKalderon, Michal int rc; 818456a5849SKalderon, Michal 819456a5849SKalderon, Michal if (!ep) 820456a5849SKalderon, Michal return -EINVAL; 821456a5849SKalderon, Michal 822456a5849SKalderon, Michal qp = ep->qp; 823456a5849SKalderon, Michal reject = !qp; 824456a5849SKalderon, Michal 825456a5849SKalderon, Michal memset(&init_data, 0, sizeof(init_data)); 826456a5849SKalderon, Michal init_data.cid = reject ? ep->tcp_cid : qp->icid; 827456a5849SKalderon, Michal init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 828456a5849SKalderon, Michal 8294b0fdd7cSKalderon, Michal if (ep->connect_mode == TCP_CONNECT_ACTIVE) 8304b0fdd7cSKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_CB; 8314b0fdd7cSKalderon, Michal else 832456a5849SKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_EBLOCK; 833456a5849SKalderon, Michal 834456a5849SKalderon, Michal rc = qed_sp_init_request(p_hwfn, &p_ent, 835456a5849SKalderon, Michal IWARP_RAMROD_CMD_ID_MPA_OFFLOAD, 836456a5849SKalderon, Michal PROTOCOLID_IWARP, &init_data); 837456a5849SKalderon, Michal if (rc) 838456a5849SKalderon, Michal return rc; 839456a5849SKalderon, Michal 840456a5849SKalderon, Michal p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload; 841456a5849SKalderon, Michal out_pdata_phys = ep->ep_buffer_phys + 842456a5849SKalderon, Michal offsetof(struct qed_iwarp_ep_memory, out_pdata); 843456a5849SKalderon, Michal DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr, 844456a5849SKalderon, Michal out_pdata_phys); 845456a5849SKalderon, Michal p_mpa_ramrod->common.outgoing_ulp_buffer.len = 846456a5849SKalderon, Michal ep->cm_info.private_data_len; 847456a5849SKalderon, Michal p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed; 848456a5849SKalderon, Michal 849456a5849SKalderon, Michal p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord; 850456a5849SKalderon, Michal p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird; 851456a5849SKalderon, Michal 852456a5849SKalderon, Michal p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid; 853456a5849SKalderon, Michal 854456a5849SKalderon, Michal in_pdata_phys = ep->ep_buffer_phys + 855456a5849SKalderon, Michal offsetof(struct qed_iwarp_ep_memory, in_pdata); 856456a5849SKalderon, Michal p_mpa_ramrod->tcp_connect_side = ep->connect_mode; 857456a5849SKalderon, Michal DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr, 858456a5849SKalderon, Michal in_pdata_phys); 859456a5849SKalderon, Michal p_mpa_ramrod->incoming_ulp_buffer.len = 860456a5849SKalderon, Michal cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata)); 861456a5849SKalderon, Michal async_output_phys = ep->ep_buffer_phys + 862456a5849SKalderon, Michal offsetof(struct qed_iwarp_ep_memory, async_output); 863456a5849SKalderon, Michal DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf, 864456a5849SKalderon, Michal async_output_phys); 865456a5849SKalderon, Michal p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep)); 866456a5849SKalderon, Michal p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep)); 867456a5849SKalderon, Michal 868456a5849SKalderon, Michal if (!reject) { 869456a5849SKalderon, Michal DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr, 870456a5849SKalderon, Michal qp->shared_queue_phys_addr); 871456a5849SKalderon, Michal p_mpa_ramrod->stats_counter_id = 872456a5849SKalderon, Michal RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue; 873456a5849SKalderon, Michal } else { 874456a5849SKalderon, Michal p_mpa_ramrod->common.reject = 1; 875456a5849SKalderon, Michal } 876456a5849SKalderon, Michal 877456a5849SKalderon, Michal p_mpa_ramrod->mode = ep->mpa_rev; 878456a5849SKalderon, Michal SET_FIELD(p_mpa_ramrod->rtr_pref, 879456a5849SKalderon, Michal IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type); 880456a5849SKalderon, Michal 881456a5849SKalderon, Michal ep->state = QED_IWARP_EP_MPA_OFFLOADED; 882456a5849SKalderon, Michal rc = qed_spq_post(p_hwfn, p_ent, NULL); 883456a5849SKalderon, Michal if (!reject) 884456a5849SKalderon, Michal ep->cid = qp->icid; /* Now they're migrated. */ 885456a5849SKalderon, Michal 886456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, 887456a5849SKalderon, Michal QED_MSG_RDMA, 888456a5849SKalderon, Michal "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n", 889456a5849SKalderon, Michal reject ? 0xffff : qp->icid, 890456a5849SKalderon, Michal ep->tcp_cid, 891456a5849SKalderon, Michal rc, 892456a5849SKalderon, Michal ep->cm_info.ird, 893456a5849SKalderon, Michal ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject); 894456a5849SKalderon, Michal return rc; 895456a5849SKalderon, Michal } 896456a5849SKalderon, Michal 897456a5849SKalderon, Michal static void 898456a5849SKalderon, Michal qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 899456a5849SKalderon, Michal { 900456a5849SKalderon, Michal ep->state = QED_IWARP_EP_INIT; 901456a5849SKalderon, Michal if (ep->qp) 902456a5849SKalderon, Michal ep->qp->ep = NULL; 903456a5849SKalderon, Michal ep->qp = NULL; 904456a5849SKalderon, Michal memset(&ep->cm_info, 0, sizeof(ep->cm_info)); 905456a5849SKalderon, Michal 906456a5849SKalderon, Michal if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 907456a5849SKalderon, Michal /* We don't care about the return code, it's ok if tcp_cid 908456a5849SKalderon, Michal * remains invalid...in this case we'll defer allocation 909456a5849SKalderon, Michal */ 910456a5849SKalderon, Michal qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 911456a5849SKalderon, Michal } 912456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 913456a5849SKalderon, Michal 914456a5849SKalderon, Michal list_del(&ep->list_entry); 915456a5849SKalderon, Michal list_add_tail(&ep->list_entry, 916456a5849SKalderon, Michal &p_hwfn->p_rdma_info->iwarp.ep_free_list); 917456a5849SKalderon, Michal 918456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 919456a5849SKalderon, Michal } 920456a5849SKalderon, Michal 9214b0fdd7cSKalderon, Michal void 9224b0fdd7cSKalderon, Michal qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 9234b0fdd7cSKalderon, Michal { 9244b0fdd7cSKalderon, Michal struct mpa_v2_hdr *mpa_v2_params; 9254b0fdd7cSKalderon, Michal union async_output *async_data; 9264b0fdd7cSKalderon, Michal u16 mpa_ird, mpa_ord; 9274b0fdd7cSKalderon, Michal u8 mpa_data_size = 0; 9284b0fdd7cSKalderon, Michal 9294b0fdd7cSKalderon, Michal if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) { 9304b0fdd7cSKalderon, Michal mpa_v2_params = 9314b0fdd7cSKalderon, Michal (struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata); 9324b0fdd7cSKalderon, Michal mpa_data_size = sizeof(*mpa_v2_params); 9334b0fdd7cSKalderon, Michal mpa_ird = ntohs(mpa_v2_params->ird); 9344b0fdd7cSKalderon, Michal mpa_ord = ntohs(mpa_v2_params->ord); 9354b0fdd7cSKalderon, Michal 9364b0fdd7cSKalderon, Michal ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK); 9374b0fdd7cSKalderon, Michal ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK); 9384b0fdd7cSKalderon, Michal } 9394b0fdd7cSKalderon, Michal async_data = &ep->ep_buffer_virt->async_output; 9404b0fdd7cSKalderon, Michal 9414b0fdd7cSKalderon, Michal ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size; 9424b0fdd7cSKalderon, Michal ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len - 9434b0fdd7cSKalderon, Michal mpa_data_size; 9444b0fdd7cSKalderon, Michal } 9454b0fdd7cSKalderon, Michal 9464b0fdd7cSKalderon, Michal void 9474b0fdd7cSKalderon, Michal qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 9484b0fdd7cSKalderon, Michal { 9494b0fdd7cSKalderon, Michal struct qed_iwarp_cm_event_params params; 9504b0fdd7cSKalderon, Michal 9514b0fdd7cSKalderon, Michal if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 9524b0fdd7cSKalderon, Michal DP_NOTICE(p_hwfn, 9534b0fdd7cSKalderon, Michal "MPA reply event not expected on passive side!\n"); 9544b0fdd7cSKalderon, Michal return; 9554b0fdd7cSKalderon, Michal } 9564b0fdd7cSKalderon, Michal 9574b0fdd7cSKalderon, Michal params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY; 9584b0fdd7cSKalderon, Michal 9594b0fdd7cSKalderon, Michal qed_iwarp_parse_private_data(p_hwfn, ep); 9604b0fdd7cSKalderon, Michal 9614b0fdd7cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 9624b0fdd7cSKalderon, Michal "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 9634b0fdd7cSKalderon, Michal ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 9644b0fdd7cSKalderon, Michal 9654b0fdd7cSKalderon, Michal params.cm_info = &ep->cm_info; 9664b0fdd7cSKalderon, Michal params.ep_context = ep; 9674b0fdd7cSKalderon, Michal params.status = 0; 9684b0fdd7cSKalderon, Michal 9694b0fdd7cSKalderon, Michal ep->mpa_reply_processed = true; 9704b0fdd7cSKalderon, Michal 9714b0fdd7cSKalderon, Michal ep->event_cb(ep->cb_context, ¶ms); 9724b0fdd7cSKalderon, Michal } 9734b0fdd7cSKalderon, Michal 974456a5849SKalderon, Michal #define QED_IWARP_CONNECT_MODE_STRING(ep) \ 975456a5849SKalderon, Michal ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active" 976456a5849SKalderon, Michal 977456a5849SKalderon, Michal /* Called as a result of the event: 978456a5849SKalderon, Michal * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE 979456a5849SKalderon, Michal */ 980456a5849SKalderon, Michal static void 981456a5849SKalderon, Michal qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn, 982456a5849SKalderon, Michal struct qed_iwarp_ep *ep, u8 fw_return_code) 983456a5849SKalderon, Michal { 984456a5849SKalderon, Michal struct qed_iwarp_cm_event_params params; 985456a5849SKalderon, Michal 9864b0fdd7cSKalderon, Michal if (ep->connect_mode == TCP_CONNECT_ACTIVE) 9874b0fdd7cSKalderon, Michal params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 9884b0fdd7cSKalderon, Michal else 989456a5849SKalderon, Michal params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE; 990456a5849SKalderon, Michal 9914b0fdd7cSKalderon, Michal if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed) 9924b0fdd7cSKalderon, Michal qed_iwarp_parse_private_data(p_hwfn, ep); 9934b0fdd7cSKalderon, Michal 994456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 995456a5849SKalderon, Michal "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n", 996456a5849SKalderon, Michal ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird); 997456a5849SKalderon, Michal 998456a5849SKalderon, Michal params.cm_info = &ep->cm_info; 999456a5849SKalderon, Michal 1000456a5849SKalderon, Michal params.ep_context = ep; 1001456a5849SKalderon, Michal 1002456a5849SKalderon, Michal ep->state = QED_IWARP_EP_CLOSED; 1003456a5849SKalderon, Michal 1004456a5849SKalderon, Michal switch (fw_return_code) { 1005456a5849SKalderon, Michal case RDMA_RETURN_OK: 1006456a5849SKalderon, Michal ep->qp->max_rd_atomic_req = ep->cm_info.ord; 1007456a5849SKalderon, Michal ep->qp->max_rd_atomic_resp = ep->cm_info.ird; 1008456a5849SKalderon, Michal qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1); 1009456a5849SKalderon, Michal ep->state = QED_IWARP_EP_ESTABLISHED; 1010456a5849SKalderon, Michal params.status = 0; 1011456a5849SKalderon, Michal break; 10129816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_TIMEOUT: 10139816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA timeout\n", 10149816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10159816b614SKalderon, Michal params.status = -EBUSY; 10169816b614SKalderon, Michal break; 10179816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_ERROR_REJECT: 10189816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA Reject\n", 10199816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10209816b614SKalderon, Michal params.status = -ECONNREFUSED; 10219816b614SKalderon, Michal break; 10229816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_RST: 10239816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n", 10249816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid, 10259816b614SKalderon, Michal ep->tcp_cid); 10269816b614SKalderon, Michal params.status = -ECONNRESET; 10279816b614SKalderon, Michal break; 10289816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_FIN: 10299816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA received FIN\n", 10309816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10319816b614SKalderon, Michal params.status = -ECONNREFUSED; 10329816b614SKalderon, Michal break; 10339816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_INSUF_IRD: 10349816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA insufficient ird\n", 10359816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10369816b614SKalderon, Michal params.status = -ECONNREFUSED; 10379816b614SKalderon, Michal break; 10389816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_RTR_MISMATCH: 10399816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA RTR MISMATCH\n", 10409816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10419816b614SKalderon, Michal params.status = -ECONNREFUSED; 10429816b614SKalderon, Michal break; 10439816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 10449816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 10459816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10469816b614SKalderon, Michal params.status = -ECONNREFUSED; 10479816b614SKalderon, Michal break; 10489816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_LOCAL_ERROR: 10499816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA Local Error\n", 10509816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10519816b614SKalderon, Michal params.status = -ECONNREFUSED; 10529816b614SKalderon, Michal break; 10539816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_TERMINATE: 10549816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA TERMINATE\n", 10559816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->cid); 10569816b614SKalderon, Michal params.status = -ECONNREFUSED; 10579816b614SKalderon, Michal break; 1058456a5849SKalderon, Michal default: 1059456a5849SKalderon, Michal params.status = -ECONNRESET; 1060456a5849SKalderon, Michal break; 1061456a5849SKalderon, Michal } 1062456a5849SKalderon, Michal 1063456a5849SKalderon, Michal ep->event_cb(ep->cb_context, ¶ms); 10649816b614SKalderon, Michal 10659816b614SKalderon, Michal /* on passive side, if there is no associated QP (REJECT) we need to 10669816b614SKalderon, Michal * return the ep to the pool, (in the regular case we add an element 10679816b614SKalderon, Michal * in accept instead of this one. 10689816b614SKalderon, Michal * In both cases we need to remove it from the ep_list. 10699816b614SKalderon, Michal */ 10709816b614SKalderon, Michal if (fw_return_code != RDMA_RETURN_OK) { 10719816b614SKalderon, Michal ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 10729816b614SKalderon, Michal if ((ep->connect_mode == TCP_CONNECT_PASSIVE) && 10739816b614SKalderon, Michal (!ep->qp)) { /* Rejected */ 10749816b614SKalderon, Michal qed_iwarp_return_ep(p_hwfn, ep); 10759816b614SKalderon, Michal } else { 10769816b614SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 10779816b614SKalderon, Michal list_del(&ep->list_entry); 10789816b614SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 10799816b614SKalderon, Michal } 10809816b614SKalderon, Michal } 1081456a5849SKalderon, Michal } 1082456a5849SKalderon, Michal 1083456a5849SKalderon, Michal static void 1084456a5849SKalderon, Michal qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn, 1085456a5849SKalderon, Michal struct qed_iwarp_ep *ep, u8 *mpa_data_size) 1086456a5849SKalderon, Michal { 1087456a5849SKalderon, Michal struct mpa_v2_hdr *mpa_v2_params; 1088456a5849SKalderon, Michal u16 mpa_ird, mpa_ord; 1089456a5849SKalderon, Michal 1090456a5849SKalderon, Michal *mpa_data_size = 0; 1091456a5849SKalderon, Michal if (MPA_REV2(ep->mpa_rev)) { 1092456a5849SKalderon, Michal mpa_v2_params = 1093456a5849SKalderon, Michal (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata; 1094456a5849SKalderon, Michal *mpa_data_size = sizeof(*mpa_v2_params); 1095456a5849SKalderon, Michal 1096456a5849SKalderon, Michal mpa_ird = (u16)ep->cm_info.ird; 1097456a5849SKalderon, Michal mpa_ord = (u16)ep->cm_info.ord; 1098456a5849SKalderon, Michal 1099456a5849SKalderon, Michal if (ep->rtr_type != MPA_RTR_TYPE_NONE) { 1100456a5849SKalderon, Michal mpa_ird |= MPA_V2_PEER2PEER_MODEL; 1101456a5849SKalderon, Michal 1102456a5849SKalderon, Michal if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND) 1103456a5849SKalderon, Michal mpa_ird |= MPA_V2_SEND_RTR; 1104456a5849SKalderon, Michal 1105456a5849SKalderon, Michal if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE) 1106456a5849SKalderon, Michal mpa_ord |= MPA_V2_WRITE_RTR; 1107456a5849SKalderon, Michal 1108456a5849SKalderon, Michal if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) 1109456a5849SKalderon, Michal mpa_ord |= MPA_V2_READ_RTR; 1110456a5849SKalderon, Michal } 1111456a5849SKalderon, Michal 1112456a5849SKalderon, Michal mpa_v2_params->ird = htons(mpa_ird); 1113456a5849SKalderon, Michal mpa_v2_params->ord = htons(mpa_ord); 1114456a5849SKalderon, Michal 1115456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, 1116456a5849SKalderon, Michal QED_MSG_RDMA, 1117456a5849SKalderon, Michal "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n", 1118456a5849SKalderon, Michal mpa_v2_params->ird, 1119456a5849SKalderon, Michal mpa_v2_params->ord, 1120456a5849SKalderon, Michal *((u32 *)mpa_v2_params), 1121456a5849SKalderon, Michal mpa_ord & MPA_V2_IRD_ORD_MASK, 1122456a5849SKalderon, Michal mpa_ird & MPA_V2_IRD_ORD_MASK, 1123456a5849SKalderon, Michal !!(mpa_ird & MPA_V2_PEER2PEER_MODEL), 1124456a5849SKalderon, Michal !!(mpa_ird & MPA_V2_SEND_RTR), 1125456a5849SKalderon, Michal !!(mpa_ord & MPA_V2_WRITE_RTR), 1126456a5849SKalderon, Michal !!(mpa_ord & MPA_V2_READ_RTR)); 1127456a5849SKalderon, Michal } 1128456a5849SKalderon, Michal } 1129456a5849SKalderon, Michal 11304b0fdd7cSKalderon, Michal int qed_iwarp_connect(void *rdma_cxt, 11314b0fdd7cSKalderon, Michal struct qed_iwarp_connect_in *iparams, 11324b0fdd7cSKalderon, Michal struct qed_iwarp_connect_out *oparams) 11334b0fdd7cSKalderon, Michal { 11344b0fdd7cSKalderon, Michal struct qed_hwfn *p_hwfn = rdma_cxt; 11354b0fdd7cSKalderon, Michal struct qed_iwarp_info *iwarp_info; 11364b0fdd7cSKalderon, Michal struct qed_iwarp_ep *ep; 11374b0fdd7cSKalderon, Michal u8 mpa_data_size = 0; 11384b0fdd7cSKalderon, Michal u8 ts_hdr_size = 0; 11394b0fdd7cSKalderon, Michal u32 cid; 11404b0fdd7cSKalderon, Michal int rc; 11414b0fdd7cSKalderon, Michal 11424b0fdd7cSKalderon, Michal if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) || 11434b0fdd7cSKalderon, Michal (iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) { 11444b0fdd7cSKalderon, Michal DP_NOTICE(p_hwfn, 11454b0fdd7cSKalderon, Michal "QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 11464b0fdd7cSKalderon, Michal iparams->qp->icid, iparams->cm_info.ord, 11474b0fdd7cSKalderon, Michal iparams->cm_info.ird); 11484b0fdd7cSKalderon, Michal 11494b0fdd7cSKalderon, Michal return -EINVAL; 11504b0fdd7cSKalderon, Michal } 11514b0fdd7cSKalderon, Michal 11524b0fdd7cSKalderon, Michal iwarp_info = &p_hwfn->p_rdma_info->iwarp; 11534b0fdd7cSKalderon, Michal 11544b0fdd7cSKalderon, Michal /* Allocate ep object */ 11554b0fdd7cSKalderon, Michal rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 11564b0fdd7cSKalderon, Michal if (rc) 11574b0fdd7cSKalderon, Michal return rc; 11584b0fdd7cSKalderon, Michal 11594b0fdd7cSKalderon, Michal rc = qed_iwarp_create_ep(p_hwfn, &ep); 11604b0fdd7cSKalderon, Michal if (rc) 11614b0fdd7cSKalderon, Michal goto err; 11624b0fdd7cSKalderon, Michal 11634b0fdd7cSKalderon, Michal ep->tcp_cid = cid; 11644b0fdd7cSKalderon, Michal 11654b0fdd7cSKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 11664b0fdd7cSKalderon, Michal list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 11674b0fdd7cSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 11684b0fdd7cSKalderon, Michal 11694b0fdd7cSKalderon, Michal ep->qp = iparams->qp; 11704b0fdd7cSKalderon, Michal ep->qp->ep = ep; 11714b0fdd7cSKalderon, Michal ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr); 11724b0fdd7cSKalderon, Michal ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr); 11734b0fdd7cSKalderon, Michal memcpy(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info)); 11744b0fdd7cSKalderon, Michal 11754b0fdd7cSKalderon, Michal ep->cm_info.ord = iparams->cm_info.ord; 11764b0fdd7cSKalderon, Michal ep->cm_info.ird = iparams->cm_info.ird; 11774b0fdd7cSKalderon, Michal 11784b0fdd7cSKalderon, Michal ep->rtr_type = iwarp_info->rtr_type; 11794b0fdd7cSKalderon, Michal if (!iwarp_info->peer2peer) 11804b0fdd7cSKalderon, Michal ep->rtr_type = MPA_RTR_TYPE_NONE; 11814b0fdd7cSKalderon, Michal 11824b0fdd7cSKalderon, Michal if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && (ep->cm_info.ord == 0)) 11834b0fdd7cSKalderon, Michal ep->cm_info.ord = 1; 11844b0fdd7cSKalderon, Michal 11854b0fdd7cSKalderon, Michal ep->mpa_rev = iwarp_info->mpa_rev; 11864b0fdd7cSKalderon, Michal 11874b0fdd7cSKalderon, Michal qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 11884b0fdd7cSKalderon, Michal 11894b0fdd7cSKalderon, Michal ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 11904b0fdd7cSKalderon, Michal ep->cm_info.private_data_len = iparams->cm_info.private_data_len + 11914b0fdd7cSKalderon, Michal mpa_data_size; 11924b0fdd7cSKalderon, Michal 11934b0fdd7cSKalderon, Michal memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 11944b0fdd7cSKalderon, Michal iparams->cm_info.private_data, 11954b0fdd7cSKalderon, Michal iparams->cm_info.private_data_len); 11964b0fdd7cSKalderon, Michal 11974b0fdd7cSKalderon, Michal if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN) 11984b0fdd7cSKalderon, Michal ts_hdr_size = TIMESTAMP_HEADER_SIZE; 11994b0fdd7cSKalderon, Michal 12004b0fdd7cSKalderon, Michal ep->mss = iparams->mss - ts_hdr_size; 12014b0fdd7cSKalderon, Michal ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 12024b0fdd7cSKalderon, Michal 12034b0fdd7cSKalderon, Michal ep->event_cb = iparams->event_cb; 12044b0fdd7cSKalderon, Michal ep->cb_context = iparams->cb_context; 12054b0fdd7cSKalderon, Michal ep->connect_mode = TCP_CONNECT_ACTIVE; 12064b0fdd7cSKalderon, Michal 12074b0fdd7cSKalderon, Michal oparams->ep_context = ep; 12084b0fdd7cSKalderon, Michal 12094b0fdd7cSKalderon, Michal rc = qed_iwarp_tcp_offload(p_hwfn, ep); 12104b0fdd7cSKalderon, Michal 12114b0fdd7cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n", 12124b0fdd7cSKalderon, Michal iparams->qp->icid, ep->tcp_cid, rc); 12134b0fdd7cSKalderon, Michal 12144b0fdd7cSKalderon, Michal if (rc) { 12154b0fdd7cSKalderon, Michal qed_iwarp_destroy_ep(p_hwfn, ep, true); 12164b0fdd7cSKalderon, Michal goto err; 12174b0fdd7cSKalderon, Michal } 12184b0fdd7cSKalderon, Michal 12194b0fdd7cSKalderon, Michal return rc; 12204b0fdd7cSKalderon, Michal err: 12214b0fdd7cSKalderon, Michal qed_iwarp_cid_cleaned(p_hwfn, cid); 12224b0fdd7cSKalderon, Michal 12234b0fdd7cSKalderon, Michal return rc; 12244b0fdd7cSKalderon, Michal } 12254b0fdd7cSKalderon, Michal 1226456a5849SKalderon, Michal static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn) 1227456a5849SKalderon, Michal { 1228456a5849SKalderon, Michal struct qed_iwarp_ep *ep = NULL; 1229456a5849SKalderon, Michal int rc; 1230456a5849SKalderon, Michal 1231456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1232456a5849SKalderon, Michal 1233456a5849SKalderon, Michal if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1234456a5849SKalderon, Michal DP_ERR(p_hwfn, "Ep list is empty\n"); 1235456a5849SKalderon, Michal goto out; 1236456a5849SKalderon, Michal } 1237456a5849SKalderon, Michal 1238456a5849SKalderon, Michal ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1239456a5849SKalderon, Michal struct qed_iwarp_ep, list_entry); 1240456a5849SKalderon, Michal 1241456a5849SKalderon, Michal /* in some cases we could have failed allocating a tcp cid when added 1242456a5849SKalderon, Michal * from accept / failure... retry now..this is not the common case. 1243456a5849SKalderon, Michal */ 1244456a5849SKalderon, Michal if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) { 1245456a5849SKalderon, Michal rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid); 1246456a5849SKalderon, Michal 1247456a5849SKalderon, Michal /* if we fail we could look for another entry with a valid 1248456a5849SKalderon, Michal * tcp_cid, but since we don't expect to reach this anyway 1249456a5849SKalderon, Michal * it's not worth the handling 1250456a5849SKalderon, Michal */ 1251456a5849SKalderon, Michal if (rc) { 1252456a5849SKalderon, Michal ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 1253456a5849SKalderon, Michal ep = NULL; 1254456a5849SKalderon, Michal goto out; 1255456a5849SKalderon, Michal } 1256456a5849SKalderon, Michal } 1257456a5849SKalderon, Michal 1258456a5849SKalderon, Michal list_del(&ep->list_entry); 1259456a5849SKalderon, Michal 1260456a5849SKalderon, Michal out: 1261456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1262456a5849SKalderon, Michal return ep; 1263456a5849SKalderon, Michal } 1264456a5849SKalderon, Michal 126567b40dccSKalderon, Michal #define QED_IWARP_MAX_CID_CLEAN_TIME 100 126667b40dccSKalderon, Michal #define QED_IWARP_MAX_NO_PROGRESS_CNT 5 126767b40dccSKalderon, Michal 126867b40dccSKalderon, Michal /* This function waits for all the bits of a bmap to be cleared, as long as 126967b40dccSKalderon, Michal * there is progress ( i.e. the number of bits left to be cleared decreases ) 127067b40dccSKalderon, Michal * the function continues. 127167b40dccSKalderon, Michal */ 127267b40dccSKalderon, Michal static int 127367b40dccSKalderon, Michal qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) 127467b40dccSKalderon, Michal { 127567b40dccSKalderon, Michal int prev_weight = 0; 127667b40dccSKalderon, Michal int wait_count = 0; 127767b40dccSKalderon, Michal int weight = 0; 127867b40dccSKalderon, Michal 127967b40dccSKalderon, Michal weight = bitmap_weight(bmap->bitmap, bmap->max_count); 128067b40dccSKalderon, Michal prev_weight = weight; 128167b40dccSKalderon, Michal 128267b40dccSKalderon, Michal while (weight) { 128367b40dccSKalderon, Michal msleep(QED_IWARP_MAX_CID_CLEAN_TIME); 128467b40dccSKalderon, Michal 128567b40dccSKalderon, Michal weight = bitmap_weight(bmap->bitmap, bmap->max_count); 128667b40dccSKalderon, Michal 128767b40dccSKalderon, Michal if (prev_weight == weight) { 128867b40dccSKalderon, Michal wait_count++; 128967b40dccSKalderon, Michal } else { 129067b40dccSKalderon, Michal prev_weight = weight; 129167b40dccSKalderon, Michal wait_count = 0; 129267b40dccSKalderon, Michal } 129367b40dccSKalderon, Michal 129467b40dccSKalderon, Michal if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) { 129567b40dccSKalderon, Michal DP_NOTICE(p_hwfn, 129667b40dccSKalderon, Michal "%s bitmap wait timed out (%d cids pending)\n", 129767b40dccSKalderon, Michal bmap->name, weight); 129867b40dccSKalderon, Michal return -EBUSY; 129967b40dccSKalderon, Michal } 130067b40dccSKalderon, Michal } 130167b40dccSKalderon, Michal return 0; 130267b40dccSKalderon, Michal } 130367b40dccSKalderon, Michal 130467b40dccSKalderon, Michal static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn) 130567b40dccSKalderon, Michal { 1306456a5849SKalderon, Michal int rc; 1307456a5849SKalderon, Michal int i; 1308456a5849SKalderon, Michal 1309456a5849SKalderon, Michal rc = qed_iwarp_wait_cid_map_cleared(p_hwfn, 1310456a5849SKalderon, Michal &p_hwfn->p_rdma_info->tcp_cid_map); 1311456a5849SKalderon, Michal if (rc) 1312456a5849SKalderon, Michal return rc; 1313456a5849SKalderon, Michal 1314456a5849SKalderon, Michal /* Now free the tcp cids from the main cid map */ 1315456a5849SKalderon, Michal for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++) 1316456a5849SKalderon, Michal qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i); 1317456a5849SKalderon, Michal 131867b40dccSKalderon, Michal /* Now wait for all cids to be completed */ 131967b40dccSKalderon, Michal return qed_iwarp_wait_cid_map_cleared(p_hwfn, 132067b40dccSKalderon, Michal &p_hwfn->p_rdma_info->cid_map); 132167b40dccSKalderon, Michal } 132267b40dccSKalderon, Michal 1323456a5849SKalderon, Michal static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn) 1324456a5849SKalderon, Michal { 1325456a5849SKalderon, Michal struct qed_iwarp_ep *ep; 1326456a5849SKalderon, Michal 1327456a5849SKalderon, Michal while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) { 1328456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1329456a5849SKalderon, Michal 1330456a5849SKalderon, Michal ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list, 1331456a5849SKalderon, Michal struct qed_iwarp_ep, list_entry); 1332456a5849SKalderon, Michal 1333456a5849SKalderon, Michal if (!ep) { 1334456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1335456a5849SKalderon, Michal break; 1336456a5849SKalderon, Michal } 1337456a5849SKalderon, Michal list_del(&ep->list_entry); 1338456a5849SKalderon, Michal 1339456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1340456a5849SKalderon, Michal 1341456a5849SKalderon, Michal if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID) 1342456a5849SKalderon, Michal qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid); 1343456a5849SKalderon, Michal 1344456a5849SKalderon, Michal qed_iwarp_destroy_ep(p_hwfn, ep, false); 1345456a5849SKalderon, Michal } 1346456a5849SKalderon, Michal } 1347456a5849SKalderon, Michal 1348456a5849SKalderon, Michal static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init) 1349456a5849SKalderon, Michal { 1350456a5849SKalderon, Michal struct qed_iwarp_ep *ep; 1351456a5849SKalderon, Michal int rc = 0; 1352456a5849SKalderon, Michal int count; 1353456a5849SKalderon, Michal u32 cid; 1354456a5849SKalderon, Michal int i; 1355456a5849SKalderon, Michal 1356456a5849SKalderon, Michal count = init ? QED_IWARP_PREALLOC_CNT : 1; 1357456a5849SKalderon, Michal for (i = 0; i < count; i++) { 1358456a5849SKalderon, Michal rc = qed_iwarp_create_ep(p_hwfn, &ep); 1359456a5849SKalderon, Michal if (rc) 1360456a5849SKalderon, Michal return rc; 1361456a5849SKalderon, Michal 1362456a5849SKalderon, Michal /* During initialization we allocate from the main pool, 1363456a5849SKalderon, Michal * afterwards we allocate only from the tcp_cid. 1364456a5849SKalderon, Michal */ 1365456a5849SKalderon, Michal if (init) { 1366456a5849SKalderon, Michal rc = qed_iwarp_alloc_cid(p_hwfn, &cid); 1367456a5849SKalderon, Michal if (rc) 1368456a5849SKalderon, Michal goto err; 1369456a5849SKalderon, Michal qed_iwarp_set_tcp_cid(p_hwfn, cid); 1370456a5849SKalderon, Michal } else { 1371456a5849SKalderon, Michal /* We don't care about the return code, it's ok if 1372456a5849SKalderon, Michal * tcp_cid remains invalid...in this case we'll 1373456a5849SKalderon, Michal * defer allocation 1374456a5849SKalderon, Michal */ 1375456a5849SKalderon, Michal qed_iwarp_alloc_tcp_cid(p_hwfn, &cid); 1376456a5849SKalderon, Michal } 1377456a5849SKalderon, Michal 1378456a5849SKalderon, Michal ep->tcp_cid = cid; 1379456a5849SKalderon, Michal 1380456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1381456a5849SKalderon, Michal list_add_tail(&ep->list_entry, 1382456a5849SKalderon, Michal &p_hwfn->p_rdma_info->iwarp.ep_free_list); 1383456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 1384456a5849SKalderon, Michal } 1385456a5849SKalderon, Michal 1386456a5849SKalderon, Michal return rc; 1387456a5849SKalderon, Michal 1388456a5849SKalderon, Michal err: 1389456a5849SKalderon, Michal qed_iwarp_destroy_ep(p_hwfn, ep, false); 1390456a5849SKalderon, Michal 1391456a5849SKalderon, Michal return rc; 1392456a5849SKalderon, Michal } 1393456a5849SKalderon, Michal 139467b40dccSKalderon, Michal int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) 139567b40dccSKalderon, Michal { 1396456a5849SKalderon, Michal int rc; 1397456a5849SKalderon, Michal 1398456a5849SKalderon, Michal /* Allocate bitmap for tcp cid. These are used by passive side 1399456a5849SKalderon, Michal * to ensure it can allocate a tcp cid during dpc that was 1400456a5849SKalderon, Michal * pre-acquired and doesn't require dynamic allocation of ilt 1401456a5849SKalderon, Michal */ 1402456a5849SKalderon, Michal rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1403456a5849SKalderon, Michal QED_IWARP_PREALLOC_CNT, "TCP_CID"); 1404456a5849SKalderon, Michal if (rc) { 1405456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1406456a5849SKalderon, Michal "Failed to allocate tcp cid, rc = %d\n", rc); 1407456a5849SKalderon, Michal return rc; 1408456a5849SKalderon, Michal } 1409456a5849SKalderon, Michal 1410456a5849SKalderon, Michal INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list); 141167b40dccSKalderon, Michal spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); 141267b40dccSKalderon, Michal 1413456a5849SKalderon, Michal return qed_iwarp_prealloc_ep(p_hwfn, true); 141467b40dccSKalderon, Michal } 141567b40dccSKalderon, Michal 141667b40dccSKalderon, Michal void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) 141767b40dccSKalderon, Michal { 1418fcb39f6cSMichal Kalderon struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1419fcb39f6cSMichal Kalderon 1420456a5849SKalderon, Michal qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); 1421fcb39f6cSMichal Kalderon kfree(iwarp_info->mpa_bufs); 1422469981b1SMichal Kalderon kfree(iwarp_info->partial_fpdus); 14231e28eaadSMichal Kalderon kfree(iwarp_info->mpa_intermediate_buf); 1424456a5849SKalderon, Michal } 1425456a5849SKalderon, Michal 1426456a5849SKalderon, Michal int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) 1427456a5849SKalderon, Michal { 14284b0fdd7cSKalderon, Michal struct qed_hwfn *p_hwfn = rdma_cxt; 1429456a5849SKalderon, Michal struct qed_iwarp_ep *ep; 1430456a5849SKalderon, Michal u8 mpa_data_size = 0; 1431456a5849SKalderon, Michal int rc; 1432456a5849SKalderon, Michal 14334b0fdd7cSKalderon, Michal ep = iparams->ep_context; 1434456a5849SKalderon, Michal if (!ep) { 1435456a5849SKalderon, Michal DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n"); 1436456a5849SKalderon, Michal return -EINVAL; 1437456a5849SKalderon, Michal } 1438456a5849SKalderon, Michal 1439456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 1440456a5849SKalderon, Michal iparams->qp->icid, ep->tcp_cid); 1441456a5849SKalderon, Michal 1442456a5849SKalderon, Michal if ((iparams->ord > QED_IWARP_ORD_DEFAULT) || 1443456a5849SKalderon, Michal (iparams->ird > QED_IWARP_IRD_DEFAULT)) { 1444456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, 1445456a5849SKalderon, Michal QED_MSG_RDMA, 1446456a5849SKalderon, Michal "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n", 1447456a5849SKalderon, Michal iparams->qp->icid, 1448456a5849SKalderon, Michal ep->tcp_cid, iparams->ord, iparams->ord); 1449456a5849SKalderon, Michal return -EINVAL; 1450456a5849SKalderon, Michal } 1451456a5849SKalderon, Michal 1452456a5849SKalderon, Michal qed_iwarp_prealloc_ep(p_hwfn, false); 1453456a5849SKalderon, Michal 1454456a5849SKalderon, Michal ep->cb_context = iparams->cb_context; 1455456a5849SKalderon, Michal ep->qp = iparams->qp; 1456456a5849SKalderon, Michal ep->qp->ep = ep; 1457456a5849SKalderon, Michal 1458456a5849SKalderon, Michal if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) { 1459456a5849SKalderon, Michal /* Negotiate ord/ird: if upperlayer requested ord larger than 1460456a5849SKalderon, Michal * ird advertised by remote, we need to decrease our ord 1461456a5849SKalderon, Michal */ 1462456a5849SKalderon, Michal if (iparams->ord > ep->cm_info.ird) 1463456a5849SKalderon, Michal iparams->ord = ep->cm_info.ird; 1464456a5849SKalderon, Michal 1465456a5849SKalderon, Michal if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) && 1466456a5849SKalderon, Michal (iparams->ird == 0)) 1467456a5849SKalderon, Michal iparams->ird = 1; 1468456a5849SKalderon, Michal } 1469456a5849SKalderon, Michal 1470456a5849SKalderon, Michal /* Update cm_info ord/ird to be negotiated values */ 1471456a5849SKalderon, Michal ep->cm_info.ord = iparams->ord; 1472456a5849SKalderon, Michal ep->cm_info.ird = iparams->ird; 1473456a5849SKalderon, Michal 1474456a5849SKalderon, Michal qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1475456a5849SKalderon, Michal 1476456a5849SKalderon, Michal ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1477456a5849SKalderon, Michal ep->cm_info.private_data_len = iparams->private_data_len + 1478456a5849SKalderon, Michal mpa_data_size; 1479456a5849SKalderon, Michal 1480456a5849SKalderon, Michal memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1481456a5849SKalderon, Michal iparams->private_data, iparams->private_data_len); 1482456a5849SKalderon, Michal 1483456a5849SKalderon, Michal rc = qed_iwarp_mpa_offload(p_hwfn, ep); 1484456a5849SKalderon, Michal if (rc) 1485456a5849SKalderon, Michal qed_iwarp_modify_qp(p_hwfn, 1486456a5849SKalderon, Michal iparams->qp, QED_IWARP_QP_STATE_ERROR, 1); 1487456a5849SKalderon, Michal 1488456a5849SKalderon, Michal return rc; 1489456a5849SKalderon, Michal } 1490456a5849SKalderon, Michal 1491456a5849SKalderon, Michal int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams) 1492456a5849SKalderon, Michal { 1493456a5849SKalderon, Michal struct qed_hwfn *p_hwfn = rdma_cxt; 1494456a5849SKalderon, Michal struct qed_iwarp_ep *ep; 1495456a5849SKalderon, Michal u8 mpa_data_size = 0; 1496456a5849SKalderon, Michal 1497456a5849SKalderon, Michal ep = iparams->ep_context; 1498456a5849SKalderon, Michal if (!ep) { 1499456a5849SKalderon, Michal DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n"); 1500456a5849SKalderon, Michal return -EINVAL; 1501456a5849SKalderon, Michal } 1502456a5849SKalderon, Michal 1503456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid); 1504456a5849SKalderon, Michal 1505456a5849SKalderon, Michal ep->cb_context = iparams->cb_context; 1506456a5849SKalderon, Michal ep->qp = NULL; 1507456a5849SKalderon, Michal 1508456a5849SKalderon, Michal qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size); 1509456a5849SKalderon, Michal 1510456a5849SKalderon, Michal ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata; 1511456a5849SKalderon, Michal ep->cm_info.private_data_len = iparams->private_data_len + 1512456a5849SKalderon, Michal mpa_data_size; 1513456a5849SKalderon, Michal 1514456a5849SKalderon, Michal memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size, 1515456a5849SKalderon, Michal iparams->private_data, iparams->private_data_len); 1516456a5849SKalderon, Michal 1517456a5849SKalderon, Michal return qed_iwarp_mpa_offload(p_hwfn, ep); 151867b40dccSKalderon, Michal } 151967b40dccSKalderon, Michal 152065a91a6cSKalderon, Michal static void 152165a91a6cSKalderon, Michal qed_iwarp_print_cm_info(struct qed_hwfn *p_hwfn, 152265a91a6cSKalderon, Michal struct qed_iwarp_cm_info *cm_info) 152365a91a6cSKalderon, Michal { 152465a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "ip_version = %d\n", 152565a91a6cSKalderon, Michal cm_info->ip_version); 152665a91a6cSKalderon, Michal 152765a91a6cSKalderon, Michal if (cm_info->ip_version == QED_TCP_IPV4) 152865a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 152965a91a6cSKalderon, Michal "remote_ip %pI4h:%x, local_ip %pI4h:%x vlan=%x\n", 153065a91a6cSKalderon, Michal cm_info->remote_ip, cm_info->remote_port, 153165a91a6cSKalderon, Michal cm_info->local_ip, cm_info->local_port, 153265a91a6cSKalderon, Michal cm_info->vlan); 153365a91a6cSKalderon, Michal else 153465a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 153591d1ae47SKalderon, Michal "remote_ip %pI6:%x, local_ip %pI6:%x vlan=%x\n", 153665a91a6cSKalderon, Michal cm_info->remote_ip, cm_info->remote_port, 153765a91a6cSKalderon, Michal cm_info->local_ip, cm_info->local_port, 153865a91a6cSKalderon, Michal cm_info->vlan); 153965a91a6cSKalderon, Michal 154065a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 154165a91a6cSKalderon, Michal "private_data_len = %x ord = %d, ird = %d\n", 154265a91a6cSKalderon, Michal cm_info->private_data_len, cm_info->ord, cm_info->ird); 154365a91a6cSKalderon, Michal } 154465a91a6cSKalderon, Michal 1545b5c29ca7SKalderon, Michal static int 1546b5c29ca7SKalderon, Michal qed_iwarp_ll2_post_rx(struct qed_hwfn *p_hwfn, 1547b5c29ca7SKalderon, Michal struct qed_iwarp_ll2_buff *buf, u8 handle) 1548b5c29ca7SKalderon, Michal { 1549b5c29ca7SKalderon, Michal int rc; 1550b5c29ca7SKalderon, Michal 1551b5c29ca7SKalderon, Michal rc = qed_ll2_post_rx_buffer(p_hwfn, handle, buf->data_phys_addr, 1552b5c29ca7SKalderon, Michal (u16)buf->buff_size, buf, 1); 1553b5c29ca7SKalderon, Michal if (rc) { 1554b5c29ca7SKalderon, Michal DP_NOTICE(p_hwfn, 1555b5c29ca7SKalderon, Michal "Failed to repost rx buffer to ll2 rc = %d, handle=%d\n", 1556b5c29ca7SKalderon, Michal rc, handle); 1557b5c29ca7SKalderon, Michal dma_free_coherent(&p_hwfn->cdev->pdev->dev, buf->buff_size, 1558b5c29ca7SKalderon, Michal buf->data, buf->data_phys_addr); 1559b5c29ca7SKalderon, Michal kfree(buf); 1560b5c29ca7SKalderon, Michal } 1561b5c29ca7SKalderon, Michal 1562b5c29ca7SKalderon, Michal return rc; 1563b5c29ca7SKalderon, Michal } 1564b5c29ca7SKalderon, Michal 1565456a5849SKalderon, Michal static bool 1566456a5849SKalderon, Michal qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info) 1567456a5849SKalderon, Michal { 1568456a5849SKalderon, Michal struct qed_iwarp_ep *ep = NULL; 1569456a5849SKalderon, Michal bool found = false; 1570456a5849SKalderon, Michal 1571456a5849SKalderon, Michal list_for_each_entry(ep, 1572456a5849SKalderon, Michal &p_hwfn->p_rdma_info->iwarp.ep_list, 1573456a5849SKalderon, Michal list_entry) { 1574456a5849SKalderon, Michal if ((ep->cm_info.local_port == cm_info->local_port) && 1575456a5849SKalderon, Michal (ep->cm_info.remote_port == cm_info->remote_port) && 1576456a5849SKalderon, Michal (ep->cm_info.vlan == cm_info->vlan) && 1577456a5849SKalderon, Michal !memcmp(&ep->cm_info.local_ip, cm_info->local_ip, 1578456a5849SKalderon, Michal sizeof(cm_info->local_ip)) && 1579456a5849SKalderon, Michal !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip, 1580456a5849SKalderon, Michal sizeof(cm_info->remote_ip))) { 1581456a5849SKalderon, Michal found = true; 1582456a5849SKalderon, Michal break; 1583456a5849SKalderon, Michal } 1584456a5849SKalderon, Michal } 1585456a5849SKalderon, Michal 1586456a5849SKalderon, Michal if (found) { 1587456a5849SKalderon, Michal DP_NOTICE(p_hwfn, 1588456a5849SKalderon, Michal "SYN received on active connection - dropping\n"); 1589456a5849SKalderon, Michal qed_iwarp_print_cm_info(p_hwfn, cm_info); 1590456a5849SKalderon, Michal 1591456a5849SKalderon, Michal return true; 1592456a5849SKalderon, Michal } 1593456a5849SKalderon, Michal 1594456a5849SKalderon, Michal return false; 1595456a5849SKalderon, Michal } 1596456a5849SKalderon, Michal 159765a91a6cSKalderon, Michal static struct qed_iwarp_listener * 159865a91a6cSKalderon, Michal qed_iwarp_get_listener(struct qed_hwfn *p_hwfn, 159965a91a6cSKalderon, Michal struct qed_iwarp_cm_info *cm_info) 160065a91a6cSKalderon, Michal { 160165a91a6cSKalderon, Michal struct qed_iwarp_listener *listener = NULL; 160265a91a6cSKalderon, Michal static const u32 ip_zero[4] = { 0, 0, 0, 0 }; 160365a91a6cSKalderon, Michal bool found = false; 160465a91a6cSKalderon, Michal 160565a91a6cSKalderon, Michal qed_iwarp_print_cm_info(p_hwfn, cm_info); 160665a91a6cSKalderon, Michal 160765a91a6cSKalderon, Michal list_for_each_entry(listener, 160865a91a6cSKalderon, Michal &p_hwfn->p_rdma_info->iwarp.listen_list, 160965a91a6cSKalderon, Michal list_entry) { 161065a91a6cSKalderon, Michal if (listener->port == cm_info->local_port) { 161165a91a6cSKalderon, Michal if (!memcmp(listener->ip_addr, 161265a91a6cSKalderon, Michal ip_zero, sizeof(ip_zero))) { 161365a91a6cSKalderon, Michal found = true; 161465a91a6cSKalderon, Michal break; 161565a91a6cSKalderon, Michal } 161665a91a6cSKalderon, Michal 161765a91a6cSKalderon, Michal if (!memcmp(listener->ip_addr, 161865a91a6cSKalderon, Michal cm_info->local_ip, 161965a91a6cSKalderon, Michal sizeof(cm_info->local_ip)) && 162065a91a6cSKalderon, Michal (listener->vlan == cm_info->vlan)) { 162165a91a6cSKalderon, Michal found = true; 162265a91a6cSKalderon, Michal break; 162365a91a6cSKalderon, Michal } 162465a91a6cSKalderon, Michal } 162565a91a6cSKalderon, Michal } 162665a91a6cSKalderon, Michal 162765a91a6cSKalderon, Michal if (found) { 162865a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener found = %p\n", 162965a91a6cSKalderon, Michal listener); 163065a91a6cSKalderon, Michal return listener; 163165a91a6cSKalderon, Michal } 163265a91a6cSKalderon, Michal 163365a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "listener not found\n"); 163465a91a6cSKalderon, Michal return NULL; 163565a91a6cSKalderon, Michal } 163665a91a6cSKalderon, Michal 163765a91a6cSKalderon, Michal static int 163865a91a6cSKalderon, Michal qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, 163965a91a6cSKalderon, Michal struct qed_iwarp_cm_info *cm_info, 164065a91a6cSKalderon, Michal void *buf, 164165a91a6cSKalderon, Michal u8 *remote_mac_addr, 164265a91a6cSKalderon, Michal u8 *local_mac_addr, 164365a91a6cSKalderon, Michal int *payload_len, int *tcp_start_offset) 164465a91a6cSKalderon, Michal { 164565a91a6cSKalderon, Michal struct vlan_ethhdr *vethh; 164665a91a6cSKalderon, Michal bool vlan_valid = false; 164765a91a6cSKalderon, Michal struct ipv6hdr *ip6h; 164865a91a6cSKalderon, Michal struct ethhdr *ethh; 164965a91a6cSKalderon, Michal struct tcphdr *tcph; 165065a91a6cSKalderon, Michal struct iphdr *iph; 165165a91a6cSKalderon, Michal int eth_hlen; 165265a91a6cSKalderon, Michal int ip_hlen; 165365a91a6cSKalderon, Michal int eth_type; 165465a91a6cSKalderon, Michal int i; 165565a91a6cSKalderon, Michal 165665a91a6cSKalderon, Michal ethh = buf; 165765a91a6cSKalderon, Michal eth_type = ntohs(ethh->h_proto); 165865a91a6cSKalderon, Michal if (eth_type == ETH_P_8021Q) { 165965a91a6cSKalderon, Michal vlan_valid = true; 166065a91a6cSKalderon, Michal vethh = (struct vlan_ethhdr *)ethh; 166165a91a6cSKalderon, Michal cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK; 166265a91a6cSKalderon, Michal eth_type = ntohs(vethh->h_vlan_encapsulated_proto); 166365a91a6cSKalderon, Michal } 166465a91a6cSKalderon, Michal 166565a91a6cSKalderon, Michal eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0); 166665a91a6cSKalderon, Michal 1667456a5849SKalderon, Michal ether_addr_copy(remote_mac_addr, ethh->h_source); 1668456a5849SKalderon, Michal ether_addr_copy(local_mac_addr, ethh->h_dest); 166965a91a6cSKalderon, Michal 167065a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n", 167165a91a6cSKalderon, Michal eth_type, ethh->h_source); 167265a91a6cSKalderon, Michal 167365a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_hlen=%d destination mac: %pM\n", 167465a91a6cSKalderon, Michal eth_hlen, ethh->h_dest); 167565a91a6cSKalderon, Michal 167665a91a6cSKalderon, Michal iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen); 167765a91a6cSKalderon, Michal 167865a91a6cSKalderon, Michal if (eth_type == ETH_P_IP) { 167965a91a6cSKalderon, Michal cm_info->local_ip[0] = ntohl(iph->daddr); 168065a91a6cSKalderon, Michal cm_info->remote_ip[0] = ntohl(iph->saddr); 168165a91a6cSKalderon, Michal cm_info->ip_version = TCP_IPV4; 168265a91a6cSKalderon, Michal 168365a91a6cSKalderon, Michal ip_hlen = (iph->ihl) * sizeof(u32); 168465a91a6cSKalderon, Michal *payload_len = ntohs(iph->tot_len) - ip_hlen; 168565a91a6cSKalderon, Michal } else if (eth_type == ETH_P_IPV6) { 168665a91a6cSKalderon, Michal ip6h = (struct ipv6hdr *)iph; 168765a91a6cSKalderon, Michal for (i = 0; i < 4; i++) { 168865a91a6cSKalderon, Michal cm_info->local_ip[i] = 168965a91a6cSKalderon, Michal ntohl(ip6h->daddr.in6_u.u6_addr32[i]); 169065a91a6cSKalderon, Michal cm_info->remote_ip[i] = 169165a91a6cSKalderon, Michal ntohl(ip6h->saddr.in6_u.u6_addr32[i]); 169265a91a6cSKalderon, Michal } 169365a91a6cSKalderon, Michal cm_info->ip_version = TCP_IPV6; 169465a91a6cSKalderon, Michal 169565a91a6cSKalderon, Michal ip_hlen = sizeof(*ip6h); 169665a91a6cSKalderon, Michal *payload_len = ntohs(ip6h->payload_len); 169765a91a6cSKalderon, Michal } else { 169865a91a6cSKalderon, Michal DP_NOTICE(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type); 169965a91a6cSKalderon, Michal return -EINVAL; 170065a91a6cSKalderon, Michal } 170165a91a6cSKalderon, Michal 170265a91a6cSKalderon, Michal tcph = (struct tcphdr *)((u8 *)iph + ip_hlen); 170365a91a6cSKalderon, Michal 170465a91a6cSKalderon, Michal if (!tcph->syn) { 170565a91a6cSKalderon, Michal DP_NOTICE(p_hwfn, 170665a91a6cSKalderon, Michal "Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n", 170765a91a6cSKalderon, Michal iph->ihl, tcph->source, tcph->dest); 170865a91a6cSKalderon, Michal return -EINVAL; 170965a91a6cSKalderon, Michal } 171065a91a6cSKalderon, Michal 171165a91a6cSKalderon, Michal cm_info->local_port = ntohs(tcph->dest); 171265a91a6cSKalderon, Michal cm_info->remote_port = ntohs(tcph->source); 171365a91a6cSKalderon, Michal 171465a91a6cSKalderon, Michal qed_iwarp_print_cm_info(p_hwfn, cm_info); 171565a91a6cSKalderon, Michal 171665a91a6cSKalderon, Michal *tcp_start_offset = eth_hlen + ip_hlen; 171765a91a6cSKalderon, Michal 171865a91a6cSKalderon, Michal return 0; 171965a91a6cSKalderon, Michal } 172065a91a6cSKalderon, Michal 1721469981b1SMichal Kalderon static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn, 1722469981b1SMichal Kalderon u16 cid) 1723469981b1SMichal Kalderon { 1724469981b1SMichal Kalderon struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 1725469981b1SMichal Kalderon struct qed_iwarp_fpdu *partial_fpdu; 1726469981b1SMichal Kalderon u32 idx; 1727469981b1SMichal Kalderon 1728469981b1SMichal Kalderon idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP); 1729469981b1SMichal Kalderon if (idx >= iwarp_info->max_num_partial_fpdus) { 1730469981b1SMichal Kalderon DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid, 1731469981b1SMichal Kalderon iwarp_info->max_num_partial_fpdus); 1732469981b1SMichal Kalderon return NULL; 1733469981b1SMichal Kalderon } 1734469981b1SMichal Kalderon 1735469981b1SMichal Kalderon partial_fpdu = &iwarp_info->partial_fpdus[idx]; 1736469981b1SMichal Kalderon 1737469981b1SMichal Kalderon return partial_fpdu; 1738469981b1SMichal Kalderon } 1739469981b1SMichal Kalderon 1740469981b1SMichal Kalderon enum qed_iwarp_mpa_pkt_type { 1741469981b1SMichal Kalderon QED_IWARP_MPA_PKT_PACKED, 1742469981b1SMichal Kalderon QED_IWARP_MPA_PKT_PARTIAL, 1743469981b1SMichal Kalderon QED_IWARP_MPA_PKT_UNALIGNED 1744469981b1SMichal Kalderon }; 1745469981b1SMichal Kalderon 1746c7d1d839SMichal Kalderon #define QED_IWARP_INVALID_FPDU_LENGTH 0xffff 1747469981b1SMichal Kalderon #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2) 1748469981b1SMichal Kalderon #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4) 1749469981b1SMichal Kalderon 1750469981b1SMichal Kalderon /* Pad to multiple of 4 */ 1751469981b1SMichal Kalderon #define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4) 1752469981b1SMichal Kalderon #define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \ 1753469981b1SMichal Kalderon (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \ 1754469981b1SMichal Kalderon QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \ 1755469981b1SMichal Kalderon QED_IWARP_MPA_CRC32_DIGEST_SIZE) 1756469981b1SMichal Kalderon 1757ae3488ffSMichal Kalderon /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ 1758ae3488ffSMichal Kalderon #define QED_IWARP_MAX_BDS_PER_FPDU 3 1759469981b1SMichal Kalderon 1760469981b1SMichal Kalderon char *pkt_type_str[] = { 1761469981b1SMichal Kalderon "QED_IWARP_MPA_PKT_PACKED", 1762469981b1SMichal Kalderon "QED_IWARP_MPA_PKT_PARTIAL", 1763469981b1SMichal Kalderon "QED_IWARP_MPA_PKT_UNALIGNED" 1764469981b1SMichal Kalderon }; 1765469981b1SMichal Kalderon 17661e28eaadSMichal Kalderon static int 17671e28eaadSMichal Kalderon qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 17681e28eaadSMichal Kalderon struct qed_iwarp_fpdu *fpdu, 17691e28eaadSMichal Kalderon struct qed_iwarp_ll2_buff *buf); 17701e28eaadSMichal Kalderon 1771469981b1SMichal Kalderon static enum qed_iwarp_mpa_pkt_type 1772469981b1SMichal Kalderon qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, 1773469981b1SMichal Kalderon struct qed_iwarp_fpdu *fpdu, 1774469981b1SMichal Kalderon u16 tcp_payload_len, u8 *mpa_data) 1775469981b1SMichal Kalderon { 1776469981b1SMichal Kalderon enum qed_iwarp_mpa_pkt_type pkt_type; 1777469981b1SMichal Kalderon u16 mpa_len; 1778469981b1SMichal Kalderon 1779469981b1SMichal Kalderon if (fpdu->incomplete_bytes) { 1780469981b1SMichal Kalderon pkt_type = QED_IWARP_MPA_PKT_UNALIGNED; 1781469981b1SMichal Kalderon goto out; 1782469981b1SMichal Kalderon } 1783469981b1SMichal Kalderon 1784c7d1d839SMichal Kalderon /* special case of one byte remaining... 1785c7d1d839SMichal Kalderon * lower byte will be read next packet 1786c7d1d839SMichal Kalderon */ 1787c7d1d839SMichal Kalderon if (tcp_payload_len == 1) { 1788c7d1d839SMichal Kalderon fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE; 1789c7d1d839SMichal Kalderon pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1790c7d1d839SMichal Kalderon goto out; 1791c7d1d839SMichal Kalderon } 1792c7d1d839SMichal Kalderon 1793469981b1SMichal Kalderon mpa_len = ntohs(*((u16 *)(mpa_data))); 1794469981b1SMichal Kalderon fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1795469981b1SMichal Kalderon 1796469981b1SMichal Kalderon if (fpdu->fpdu_length <= tcp_payload_len) 1797469981b1SMichal Kalderon pkt_type = QED_IWARP_MPA_PKT_PACKED; 1798469981b1SMichal Kalderon else 1799469981b1SMichal Kalderon pkt_type = QED_IWARP_MPA_PKT_PARTIAL; 1800469981b1SMichal Kalderon 1801469981b1SMichal Kalderon out: 1802469981b1SMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 1803469981b1SMichal Kalderon "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n", 1804469981b1SMichal Kalderon pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len); 1805469981b1SMichal Kalderon 1806469981b1SMichal Kalderon return pkt_type; 1807469981b1SMichal Kalderon } 1808469981b1SMichal Kalderon 1809469981b1SMichal Kalderon static void 1810469981b1SMichal Kalderon qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, 1811469981b1SMichal Kalderon struct qed_iwarp_fpdu *fpdu, 1812469981b1SMichal Kalderon struct unaligned_opaque_data *pkt_data, 1813469981b1SMichal Kalderon u16 tcp_payload_size, u8 placement_offset) 1814469981b1SMichal Kalderon { 1815469981b1SMichal Kalderon fpdu->mpa_buf = buf; 1816469981b1SMichal Kalderon fpdu->pkt_hdr = buf->data_phys_addr + placement_offset; 1817469981b1SMichal Kalderon fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset; 1818469981b1SMichal Kalderon fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset; 1819469981b1SMichal Kalderon fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset; 1820469981b1SMichal Kalderon 1821c7d1d839SMichal Kalderon if (tcp_payload_size == 1) 1822c7d1d839SMichal Kalderon fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH; 1823c7d1d839SMichal Kalderon else if (tcp_payload_size < fpdu->fpdu_length) 1824469981b1SMichal Kalderon fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size; 1825469981b1SMichal Kalderon else 1826469981b1SMichal Kalderon fpdu->incomplete_bytes = 0; /* complete fpdu */ 1827469981b1SMichal Kalderon 1828469981b1SMichal Kalderon fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; 1829469981b1SMichal Kalderon } 1830469981b1SMichal Kalderon 18311e28eaadSMichal Kalderon static int 18321e28eaadSMichal Kalderon qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn, 18331e28eaadSMichal Kalderon struct qed_iwarp_fpdu *fpdu, 18341e28eaadSMichal Kalderon struct unaligned_opaque_data *pkt_data, 18351e28eaadSMichal Kalderon struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size) 18361e28eaadSMichal Kalderon { 18371e28eaadSMichal Kalderon u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf; 18381e28eaadSMichal Kalderon int rc; 18391e28eaadSMichal Kalderon 18401e28eaadSMichal Kalderon /* need to copy the data from the partial packet stored in fpdu 18411e28eaadSMichal Kalderon * to the new buf, for this we also need to move the data currently 18421e28eaadSMichal Kalderon * placed on the buf. The assumption is that the buffer is big enough 18431e28eaadSMichal Kalderon * since fpdu_length <= mss, we use an intermediate buffer since 18441e28eaadSMichal Kalderon * we may need to copy the new data to an overlapping location 18451e28eaadSMichal Kalderon */ 18461e28eaadSMichal Kalderon if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) { 18471e28eaadSMichal Kalderon DP_ERR(p_hwfn, 18481e28eaadSMichal Kalderon "MPA ALIGN: Unexpected: buffer is not large enough for split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", 18491e28eaadSMichal Kalderon buf->buff_size, fpdu->mpa_frag_len, 18501e28eaadSMichal Kalderon tcp_payload_size, fpdu->incomplete_bytes); 18511e28eaadSMichal Kalderon return -EINVAL; 18521e28eaadSMichal Kalderon } 18531e28eaadSMichal Kalderon 18541e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 18551e28eaadSMichal Kalderon "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n", 18561e28eaadSMichal Kalderon fpdu->mpa_frag_virt, fpdu->mpa_frag_len, 18571e28eaadSMichal Kalderon (u8 *)(buf->data) + pkt_data->first_mpa_offset, 18581e28eaadSMichal Kalderon tcp_payload_size); 18591e28eaadSMichal Kalderon 18601e28eaadSMichal Kalderon memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len); 18611e28eaadSMichal Kalderon memcpy(tmp_buf + fpdu->mpa_frag_len, 18621e28eaadSMichal Kalderon (u8 *)(buf->data) + pkt_data->first_mpa_offset, 18631e28eaadSMichal Kalderon tcp_payload_size); 18641e28eaadSMichal Kalderon 18651e28eaadSMichal Kalderon rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf); 18661e28eaadSMichal Kalderon if (rc) 18671e28eaadSMichal Kalderon return rc; 18681e28eaadSMichal Kalderon 18691e28eaadSMichal Kalderon /* If we managed to post the buffer copy the data to the new buffer 18701e28eaadSMichal Kalderon * o/w this will occur in the next round... 18711e28eaadSMichal Kalderon */ 18721e28eaadSMichal Kalderon memcpy((u8 *)(buf->data), tmp_buf, 18731e28eaadSMichal Kalderon fpdu->mpa_frag_len + tcp_payload_size); 18741e28eaadSMichal Kalderon 18751e28eaadSMichal Kalderon fpdu->mpa_buf = buf; 18761e28eaadSMichal Kalderon /* fpdu->pkt_hdr remains as is */ 18771e28eaadSMichal Kalderon /* fpdu->mpa_frag is overridden with new buf */ 18781e28eaadSMichal Kalderon fpdu->mpa_frag = buf->data_phys_addr; 18791e28eaadSMichal Kalderon fpdu->mpa_frag_virt = buf->data; 18801e28eaadSMichal Kalderon fpdu->mpa_frag_len += tcp_payload_size; 18811e28eaadSMichal Kalderon 18821e28eaadSMichal Kalderon fpdu->incomplete_bytes -= tcp_payload_size; 18831e28eaadSMichal Kalderon 18841e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, 18851e28eaadSMichal Kalderon QED_MSG_RDMA, 18861e28eaadSMichal Kalderon "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", 18871e28eaadSMichal Kalderon buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size, 18881e28eaadSMichal Kalderon fpdu->incomplete_bytes); 18891e28eaadSMichal Kalderon 18901e28eaadSMichal Kalderon return 0; 18911e28eaadSMichal Kalderon } 18921e28eaadSMichal Kalderon 1893c7d1d839SMichal Kalderon static void 1894c7d1d839SMichal Kalderon qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, 1895c7d1d839SMichal Kalderon struct qed_iwarp_fpdu *fpdu, u8 *mpa_data) 1896c7d1d839SMichal Kalderon { 1897c7d1d839SMichal Kalderon u16 mpa_len; 1898c7d1d839SMichal Kalderon 1899c7d1d839SMichal Kalderon /* Update incomplete packets if needed */ 1900c7d1d839SMichal Kalderon if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) { 1901c7d1d839SMichal Kalderon /* Missing lower byte is now available */ 1902c7d1d839SMichal Kalderon mpa_len = fpdu->fpdu_length | *mpa_data; 1903c7d1d839SMichal Kalderon fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); 1904c7d1d839SMichal Kalderon fpdu->mpa_frag_len = fpdu->fpdu_length; 1905c7d1d839SMichal Kalderon /* one byte of hdr */ 1906c7d1d839SMichal Kalderon fpdu->incomplete_bytes = fpdu->fpdu_length - 1; 1907c7d1d839SMichal Kalderon DP_VERBOSE(p_hwfn, 1908c7d1d839SMichal Kalderon QED_MSG_RDMA, 1909c7d1d839SMichal Kalderon "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n", 1910c7d1d839SMichal Kalderon mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes); 1911c7d1d839SMichal Kalderon } 1912c7d1d839SMichal Kalderon } 1913c7d1d839SMichal Kalderon 19141e28eaadSMichal Kalderon #define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \ 19151e28eaadSMichal Kalderon (GET_FIELD((_curr_pkt)->flags, \ 19161e28eaadSMichal Kalderon UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE)) 19171e28eaadSMichal Kalderon 19181e28eaadSMichal Kalderon /* This function is used to recycle a buffer using the ll2 drop option. It 19191e28eaadSMichal Kalderon * uses the mechanism to ensure that all buffers posted to tx before this one 19201e28eaadSMichal Kalderon * were completed. The buffer sent here will be sent as a cookie in the tx 19211e28eaadSMichal Kalderon * completion function and can then be reposted to rx chain when done. The flow 19221e28eaadSMichal Kalderon * that requires this is the flow where a FPDU splits over more than 3 tcp 19231e28eaadSMichal Kalderon * segments. In this case the driver needs to re-post a rx buffer instead of 19241e28eaadSMichal Kalderon * the one received, but driver can't simply repost a buffer it copied from 19251e28eaadSMichal Kalderon * as there is a case where the buffer was originally a packed FPDU, and is 19261e28eaadSMichal Kalderon * partially posted to FW. Driver needs to ensure FW is done with it. 19271e28eaadSMichal Kalderon */ 19281e28eaadSMichal Kalderon static int 19291e28eaadSMichal Kalderon qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, 19301e28eaadSMichal Kalderon struct qed_iwarp_fpdu *fpdu, 19311e28eaadSMichal Kalderon struct qed_iwarp_ll2_buff *buf) 19321e28eaadSMichal Kalderon { 19331e28eaadSMichal Kalderon struct qed_ll2_tx_pkt_info tx_pkt; 19341e28eaadSMichal Kalderon u8 ll2_handle; 19351e28eaadSMichal Kalderon int rc; 19361e28eaadSMichal Kalderon 19371e28eaadSMichal Kalderon memset(&tx_pkt, 0, sizeof(tx_pkt)); 19381e28eaadSMichal Kalderon tx_pkt.num_of_bds = 1; 19391e28eaadSMichal Kalderon tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; 19401e28eaadSMichal Kalderon tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 19411e28eaadSMichal Kalderon tx_pkt.first_frag = fpdu->pkt_hdr; 19421e28eaadSMichal Kalderon tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 19431e28eaadSMichal Kalderon buf->piggy_buf = NULL; 19441e28eaadSMichal Kalderon tx_pkt.cookie = buf; 19451e28eaadSMichal Kalderon 19461e28eaadSMichal Kalderon ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 19471e28eaadSMichal Kalderon 19481e28eaadSMichal Kalderon rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 19491e28eaadSMichal Kalderon if (rc) 19501e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 19511e28eaadSMichal Kalderon "Can't drop packet rc=%d\n", rc); 19521e28eaadSMichal Kalderon 19531e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, 19541e28eaadSMichal Kalderon QED_MSG_RDMA, 19551e28eaadSMichal Kalderon "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n", 19561e28eaadSMichal Kalderon (unsigned long int)tx_pkt.first_frag, 19571e28eaadSMichal Kalderon tx_pkt.first_frag_len, buf, rc); 19581e28eaadSMichal Kalderon 19591e28eaadSMichal Kalderon return rc; 19601e28eaadSMichal Kalderon } 19611e28eaadSMichal Kalderon 19621e28eaadSMichal Kalderon static int 19631e28eaadSMichal Kalderon qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu) 19641e28eaadSMichal Kalderon { 19651e28eaadSMichal Kalderon struct qed_ll2_tx_pkt_info tx_pkt; 19661e28eaadSMichal Kalderon u8 ll2_handle; 19671e28eaadSMichal Kalderon int rc; 19681e28eaadSMichal Kalderon 19691e28eaadSMichal Kalderon memset(&tx_pkt, 0, sizeof(tx_pkt)); 19701e28eaadSMichal Kalderon tx_pkt.num_of_bds = 1; 19711e28eaadSMichal Kalderon tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 19721e28eaadSMichal Kalderon tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; 19731e28eaadSMichal Kalderon 19741e28eaadSMichal Kalderon tx_pkt.first_frag = fpdu->pkt_hdr; 19751e28eaadSMichal Kalderon tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 19761e28eaadSMichal Kalderon tx_pkt.enable_ip_cksum = true; 19771e28eaadSMichal Kalderon tx_pkt.enable_l4_cksum = true; 19781e28eaadSMichal Kalderon tx_pkt.calc_ip_len = true; 19791e28eaadSMichal Kalderon /* vlan overload with enum iwarp_ll2_tx_queues */ 19801e28eaadSMichal Kalderon tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE; 19811e28eaadSMichal Kalderon 19821e28eaadSMichal Kalderon ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 19831e28eaadSMichal Kalderon 19841e28eaadSMichal Kalderon rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 19851e28eaadSMichal Kalderon if (rc) 19861e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 19871e28eaadSMichal Kalderon "Can't send right edge rc=%d\n", rc); 19881e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, 19891e28eaadSMichal Kalderon QED_MSG_RDMA, 19901e28eaadSMichal Kalderon "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n", 19911e28eaadSMichal Kalderon tx_pkt.num_of_bds, 19921e28eaadSMichal Kalderon (unsigned long int)tx_pkt.first_frag, 19931e28eaadSMichal Kalderon tx_pkt.first_frag_len, rc); 19941e28eaadSMichal Kalderon 19951e28eaadSMichal Kalderon return rc; 19961e28eaadSMichal Kalderon } 19971e28eaadSMichal Kalderon 1998469981b1SMichal Kalderon static int 1999469981b1SMichal Kalderon qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, 2000469981b1SMichal Kalderon struct qed_iwarp_fpdu *fpdu, 2001469981b1SMichal Kalderon struct unaligned_opaque_data *curr_pkt, 2002469981b1SMichal Kalderon struct qed_iwarp_ll2_buff *buf, 2003469981b1SMichal Kalderon u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type) 2004469981b1SMichal Kalderon { 2005469981b1SMichal Kalderon struct qed_ll2_tx_pkt_info tx_pkt; 2006469981b1SMichal Kalderon u8 ll2_handle; 2007469981b1SMichal Kalderon int rc; 2008469981b1SMichal Kalderon 2009469981b1SMichal Kalderon memset(&tx_pkt, 0, sizeof(tx_pkt)); 2010469981b1SMichal Kalderon 2011469981b1SMichal Kalderon /* An unaligned packet means it's split over two tcp segments. So the 2012469981b1SMichal Kalderon * complete packet requires 3 bds, one for the header, one for the 2013469981b1SMichal Kalderon * part of the fpdu of the first tcp segment, and the last fragment 2014469981b1SMichal Kalderon * will point to the remainder of the fpdu. A packed pdu, requires only 2015469981b1SMichal Kalderon * two bds, one for the header and one for the data. 2016469981b1SMichal Kalderon */ 2017469981b1SMichal Kalderon tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2; 2018469981b1SMichal Kalderon tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 2019469981b1SMichal Kalderon tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */ 2020469981b1SMichal Kalderon 2021469981b1SMichal Kalderon /* Send the mpa_buf only with the last fpdu (in case of packed) */ 2022469981b1SMichal Kalderon if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED || 2023469981b1SMichal Kalderon tcp_payload_size <= fpdu->fpdu_length) 2024469981b1SMichal Kalderon tx_pkt.cookie = fpdu->mpa_buf; 2025469981b1SMichal Kalderon 2026469981b1SMichal Kalderon tx_pkt.first_frag = fpdu->pkt_hdr; 2027469981b1SMichal Kalderon tx_pkt.first_frag_len = fpdu->pkt_hdr_size; 2028469981b1SMichal Kalderon tx_pkt.enable_ip_cksum = true; 2029469981b1SMichal Kalderon tx_pkt.enable_l4_cksum = true; 2030469981b1SMichal Kalderon tx_pkt.calc_ip_len = true; 2031469981b1SMichal Kalderon /* vlan overload with enum iwarp_ll2_tx_queues */ 2032469981b1SMichal Kalderon tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; 2033469981b1SMichal Kalderon 2034d531038eSMichal Kalderon /* special case of unaligned packet and not packed, need to send 2035d531038eSMichal Kalderon * both buffers as cookie to release. 2036d531038eSMichal Kalderon */ 2037d531038eSMichal Kalderon if (tcp_payload_size == fpdu->incomplete_bytes) 2038d531038eSMichal Kalderon fpdu->mpa_buf->piggy_buf = buf; 2039d531038eSMichal Kalderon 2040469981b1SMichal Kalderon ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; 2041469981b1SMichal Kalderon 2042469981b1SMichal Kalderon /* Set first fragment to header */ 2043469981b1SMichal Kalderon rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); 2044469981b1SMichal Kalderon if (rc) 2045469981b1SMichal Kalderon goto out; 2046469981b1SMichal Kalderon 2047469981b1SMichal Kalderon /* Set second fragment to first part of packet */ 2048469981b1SMichal Kalderon rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle, 2049469981b1SMichal Kalderon fpdu->mpa_frag, 2050469981b1SMichal Kalderon fpdu->mpa_frag_len); 2051469981b1SMichal Kalderon if (rc) 2052469981b1SMichal Kalderon goto out; 2053469981b1SMichal Kalderon 2054469981b1SMichal Kalderon if (!fpdu->incomplete_bytes) 2055469981b1SMichal Kalderon goto out; 2056469981b1SMichal Kalderon 2057469981b1SMichal Kalderon /* Set third fragment to second part of the packet */ 2058469981b1SMichal Kalderon rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, 2059469981b1SMichal Kalderon ll2_handle, 2060469981b1SMichal Kalderon buf->data_phys_addr + 2061469981b1SMichal Kalderon curr_pkt->first_mpa_offset, 2062469981b1SMichal Kalderon fpdu->incomplete_bytes); 2063469981b1SMichal Kalderon out: 2064469981b1SMichal Kalderon DP_VERBOSE(p_hwfn, 2065469981b1SMichal Kalderon QED_MSG_RDMA, 2066469981b1SMichal Kalderon "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n", 2067469981b1SMichal Kalderon tx_pkt.num_of_bds, 2068469981b1SMichal Kalderon tx_pkt.first_frag_len, 2069469981b1SMichal Kalderon fpdu->mpa_frag_len, 2070469981b1SMichal Kalderon fpdu->incomplete_bytes, rc); 2071469981b1SMichal Kalderon 2072469981b1SMichal Kalderon return rc; 2073469981b1SMichal Kalderon } 2074469981b1SMichal Kalderon 2075ae3488ffSMichal Kalderon static void 2076fcb39f6cSMichal Kalderon qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn, 2077fcb39f6cSMichal Kalderon struct unaligned_opaque_data *curr_pkt, 2078fcb39f6cSMichal Kalderon u32 opaque_data0, u32 opaque_data1) 2079fcb39f6cSMichal Kalderon { 2080fcb39f6cSMichal Kalderon u64 opaque_data; 2081fcb39f6cSMichal Kalderon 2082fcb39f6cSMichal Kalderon opaque_data = HILO_64(opaque_data1, opaque_data0); 2083fcb39f6cSMichal Kalderon *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data); 2084fcb39f6cSMichal Kalderon 2085fcb39f6cSMichal Kalderon curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset + 2086fcb39f6cSMichal Kalderon le16_to_cpu(curr_pkt->first_mpa_offset); 2087fcb39f6cSMichal Kalderon curr_pkt->cid = le32_to_cpu(curr_pkt->cid); 2088fcb39f6cSMichal Kalderon } 2089fcb39f6cSMichal Kalderon 2090fcb39f6cSMichal Kalderon /* This function is called when an unaligned or incomplete MPA packet arrives 2091fcb39f6cSMichal Kalderon * driver needs to align the packet, perhaps using previous data and send 2092fcb39f6cSMichal Kalderon * it down to FW once it is aligned. 2093fcb39f6cSMichal Kalderon */ 2094fcb39f6cSMichal Kalderon static int 2095fcb39f6cSMichal Kalderon qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, 2096fcb39f6cSMichal Kalderon struct qed_iwarp_ll2_mpa_buf *mpa_buf) 2097fcb39f6cSMichal Kalderon { 2098469981b1SMichal Kalderon struct unaligned_opaque_data *curr_pkt = &mpa_buf->data; 2099fcb39f6cSMichal Kalderon struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf; 2100469981b1SMichal Kalderon enum qed_iwarp_mpa_pkt_type pkt_type; 2101469981b1SMichal Kalderon struct qed_iwarp_fpdu *fpdu; 2102fcb39f6cSMichal Kalderon int rc = -EINVAL; 2103469981b1SMichal Kalderon u8 *mpa_data; 2104fcb39f6cSMichal Kalderon 2105469981b1SMichal Kalderon fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff); 2106469981b1SMichal Kalderon if (!fpdu) { /* something corrupt with cid, post rx back */ 2107469981b1SMichal Kalderon DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n", 2108469981b1SMichal Kalderon curr_pkt->cid); 2109469981b1SMichal Kalderon goto err; 2110469981b1SMichal Kalderon } 2111469981b1SMichal Kalderon 2112469981b1SMichal Kalderon do { 2113469981b1SMichal Kalderon mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset); 2114469981b1SMichal Kalderon 2115469981b1SMichal Kalderon pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu, 2116469981b1SMichal Kalderon mpa_buf->tcp_payload_len, 2117469981b1SMichal Kalderon mpa_data); 2118469981b1SMichal Kalderon 2119469981b1SMichal Kalderon switch (pkt_type) { 2120469981b1SMichal Kalderon case QED_IWARP_MPA_PKT_PARTIAL: 2121469981b1SMichal Kalderon qed_iwarp_init_fpdu(buf, fpdu, 2122469981b1SMichal Kalderon curr_pkt, 2123469981b1SMichal Kalderon mpa_buf->tcp_payload_len, 2124469981b1SMichal Kalderon mpa_buf->placement_offset); 2125469981b1SMichal Kalderon 21261e28eaadSMichal Kalderon if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 21271e28eaadSMichal Kalderon mpa_buf->tcp_payload_len = 0; 21281e28eaadSMichal Kalderon break; 21291e28eaadSMichal Kalderon } 21301e28eaadSMichal Kalderon 21311e28eaadSMichal Kalderon rc = qed_iwarp_win_right_edge(p_hwfn, fpdu); 21321e28eaadSMichal Kalderon 21331e28eaadSMichal Kalderon if (rc) { 21341e28eaadSMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 21351e28eaadSMichal Kalderon "Can't send FPDU:reset rc=%d\n", rc); 21361e28eaadSMichal Kalderon memset(fpdu, 0, sizeof(*fpdu)); 21371e28eaadSMichal Kalderon break; 21381e28eaadSMichal Kalderon } 21391e28eaadSMichal Kalderon 2140469981b1SMichal Kalderon mpa_buf->tcp_payload_len = 0; 2141469981b1SMichal Kalderon break; 2142469981b1SMichal Kalderon case QED_IWARP_MPA_PKT_PACKED: 2143469981b1SMichal Kalderon qed_iwarp_init_fpdu(buf, fpdu, 2144469981b1SMichal Kalderon curr_pkt, 2145469981b1SMichal Kalderon mpa_buf->tcp_payload_len, 2146469981b1SMichal Kalderon mpa_buf->placement_offset); 2147469981b1SMichal Kalderon 2148469981b1SMichal Kalderon rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2149469981b1SMichal Kalderon mpa_buf->tcp_payload_len, 2150469981b1SMichal Kalderon pkt_type); 2151469981b1SMichal Kalderon if (rc) { 2152469981b1SMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2153469981b1SMichal Kalderon "Can't send FPDU:reset rc=%d\n", rc); 2154469981b1SMichal Kalderon memset(fpdu, 0, sizeof(*fpdu)); 2155469981b1SMichal Kalderon break; 2156469981b1SMichal Kalderon } 2157469981b1SMichal Kalderon 2158469981b1SMichal Kalderon mpa_buf->tcp_payload_len -= fpdu->fpdu_length; 2159469981b1SMichal Kalderon curr_pkt->first_mpa_offset += fpdu->fpdu_length; 2160469981b1SMichal Kalderon break; 2161469981b1SMichal Kalderon case QED_IWARP_MPA_PKT_UNALIGNED: 2162c7d1d839SMichal Kalderon qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data); 21631e28eaadSMichal Kalderon if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) { 21641e28eaadSMichal Kalderon /* special handling of fpdu split over more 21651e28eaadSMichal Kalderon * than 2 segments 21661e28eaadSMichal Kalderon */ 21671e28eaadSMichal Kalderon if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { 21681e28eaadSMichal Kalderon rc = qed_iwarp_win_right_edge(p_hwfn, 21691e28eaadSMichal Kalderon fpdu); 21701e28eaadSMichal Kalderon /* packet will be re-processed later */ 21711e28eaadSMichal Kalderon if (rc) 21721e28eaadSMichal Kalderon return rc; 21731e28eaadSMichal Kalderon } 21741e28eaadSMichal Kalderon 21751e28eaadSMichal Kalderon rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt, 21761e28eaadSMichal Kalderon buf, 21771e28eaadSMichal Kalderon mpa_buf->tcp_payload_len); 21781e28eaadSMichal Kalderon if (rc) /* packet will be re-processed later */ 21791e28eaadSMichal Kalderon return rc; 21801e28eaadSMichal Kalderon 21811e28eaadSMichal Kalderon mpa_buf->tcp_payload_len = 0; 21821e28eaadSMichal Kalderon break; 21831e28eaadSMichal Kalderon } 21841e28eaadSMichal Kalderon 2185469981b1SMichal Kalderon rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, 2186469981b1SMichal Kalderon mpa_buf->tcp_payload_len, 2187469981b1SMichal Kalderon pkt_type); 2188469981b1SMichal Kalderon if (rc) { 2189469981b1SMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2190469981b1SMichal Kalderon "Can't send FPDU:delay rc=%d\n", rc); 2191469981b1SMichal Kalderon /* don't reset fpdu -> we need it for next 2192469981b1SMichal Kalderon * classify 2193469981b1SMichal Kalderon */ 2194469981b1SMichal Kalderon break; 2195469981b1SMichal Kalderon } 2196469981b1SMichal Kalderon 2197469981b1SMichal Kalderon mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes; 2198469981b1SMichal Kalderon curr_pkt->first_mpa_offset += fpdu->incomplete_bytes; 2199469981b1SMichal Kalderon /* The framed PDU was sent - no more incomplete bytes */ 2200469981b1SMichal Kalderon fpdu->incomplete_bytes = 0; 2201469981b1SMichal Kalderon break; 2202469981b1SMichal Kalderon } 2203469981b1SMichal Kalderon } while (mpa_buf->tcp_payload_len && !rc); 2204469981b1SMichal Kalderon 2205469981b1SMichal Kalderon return rc; 2206469981b1SMichal Kalderon 2207469981b1SMichal Kalderon err: 2208fcb39f6cSMichal Kalderon qed_iwarp_ll2_post_rx(p_hwfn, 2209fcb39f6cSMichal Kalderon buf, 2210fcb39f6cSMichal Kalderon p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle); 2211fcb39f6cSMichal Kalderon return rc; 2212fcb39f6cSMichal Kalderon } 2213fcb39f6cSMichal Kalderon 2214fcb39f6cSMichal Kalderon static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn) 2215fcb39f6cSMichal Kalderon { 2216fcb39f6cSMichal Kalderon struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2217fcb39f6cSMichal Kalderon struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL; 2218fcb39f6cSMichal Kalderon int rc; 2219fcb39f6cSMichal Kalderon 2220fcb39f6cSMichal Kalderon while (!list_empty(&iwarp_info->mpa_buf_pending_list)) { 2221fcb39f6cSMichal Kalderon mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list, 2222fcb39f6cSMichal Kalderon struct qed_iwarp_ll2_mpa_buf, 2223fcb39f6cSMichal Kalderon list_entry); 2224fcb39f6cSMichal Kalderon 2225fcb39f6cSMichal Kalderon rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf); 2226fcb39f6cSMichal Kalderon 2227fcb39f6cSMichal Kalderon /* busy means break and continue processing later, don't 2228fcb39f6cSMichal Kalderon * remove the buf from the pending list. 2229fcb39f6cSMichal Kalderon */ 2230fcb39f6cSMichal Kalderon if (rc == -EBUSY) 2231fcb39f6cSMichal Kalderon break; 2232fcb39f6cSMichal Kalderon 2233fcb39f6cSMichal Kalderon list_del(&mpa_buf->list_entry); 2234fcb39f6cSMichal Kalderon list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_list); 2235fcb39f6cSMichal Kalderon 2236fcb39f6cSMichal Kalderon if (rc) { /* different error, don't continue */ 2237fcb39f6cSMichal Kalderon DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc); 2238fcb39f6cSMichal Kalderon break; 2239fcb39f6cSMichal Kalderon } 2240fcb39f6cSMichal Kalderon } 2241fcb39f6cSMichal Kalderon } 2242fcb39f6cSMichal Kalderon 2243fcb39f6cSMichal Kalderon static void 2244ae3488ffSMichal Kalderon qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2245ae3488ffSMichal Kalderon { 2246fcb39f6cSMichal Kalderon struct qed_iwarp_ll2_mpa_buf *mpa_buf; 2247ae3488ffSMichal Kalderon struct qed_iwarp_info *iwarp_info; 2248ae3488ffSMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 2249ae3488ffSMichal Kalderon 2250ae3488ffSMichal Kalderon iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2251fcb39f6cSMichal Kalderon mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list, 2252fcb39f6cSMichal Kalderon struct qed_iwarp_ll2_mpa_buf, list_entry); 2253fcb39f6cSMichal Kalderon if (!mpa_buf) { 2254fcb39f6cSMichal Kalderon DP_ERR(p_hwfn, "No free mpa buf\n"); 2255fcb39f6cSMichal Kalderon goto err; 2256fcb39f6cSMichal Kalderon } 2257fcb39f6cSMichal Kalderon 2258fcb39f6cSMichal Kalderon list_del(&mpa_buf->list_entry); 2259fcb39f6cSMichal Kalderon qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data, 2260fcb39f6cSMichal Kalderon data->opaque_data_0, data->opaque_data_1); 2261fcb39f6cSMichal Kalderon 2262fcb39f6cSMichal Kalderon DP_VERBOSE(p_hwfn, 2263fcb39f6cSMichal Kalderon QED_MSG_RDMA, 2264fcb39f6cSMichal Kalderon "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n", 2265fcb39f6cSMichal Kalderon data->length.packet_length, mpa_buf->data.first_mpa_offset, 2266fcb39f6cSMichal Kalderon mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags, 2267fcb39f6cSMichal Kalderon mpa_buf->data.cid); 2268fcb39f6cSMichal Kalderon 2269fcb39f6cSMichal Kalderon mpa_buf->ll2_buf = data->cookie; 2270fcb39f6cSMichal Kalderon mpa_buf->tcp_payload_len = data->length.packet_length - 2271fcb39f6cSMichal Kalderon mpa_buf->data.first_mpa_offset; 2272fcb39f6cSMichal Kalderon mpa_buf->data.first_mpa_offset += data->u.placement_offset; 2273fcb39f6cSMichal Kalderon mpa_buf->placement_offset = data->u.placement_offset; 2274fcb39f6cSMichal Kalderon 2275fcb39f6cSMichal Kalderon list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list); 2276fcb39f6cSMichal Kalderon 2277fcb39f6cSMichal Kalderon qed_iwarp_process_pending_pkts(p_hwfn); 2278fcb39f6cSMichal Kalderon return; 2279fcb39f6cSMichal Kalderon err: 2280ae3488ffSMichal Kalderon qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, 2281ae3488ffSMichal Kalderon iwarp_info->ll2_mpa_handle); 2282ae3488ffSMichal Kalderon } 2283ae3488ffSMichal Kalderon 2284b5c29ca7SKalderon, Michal static void 2285b5c29ca7SKalderon, Michal qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) 2286b5c29ca7SKalderon, Michal { 2287b5c29ca7SKalderon, Michal struct qed_iwarp_ll2_buff *buf = data->cookie; 228865a91a6cSKalderon, Michal struct qed_iwarp_listener *listener; 228965a91a6cSKalderon, Michal struct qed_ll2_tx_pkt_info tx_pkt; 229065a91a6cSKalderon, Michal struct qed_iwarp_cm_info cm_info; 2291b5c29ca7SKalderon, Michal struct qed_hwfn *p_hwfn = cxt; 229265a91a6cSKalderon, Michal u8 remote_mac_addr[ETH_ALEN]; 229365a91a6cSKalderon, Michal u8 local_mac_addr[ETH_ALEN]; 2294456a5849SKalderon, Michal struct qed_iwarp_ep *ep; 229565a91a6cSKalderon, Michal int tcp_start_offset; 2296456a5849SKalderon, Michal u8 ts_hdr_size = 0; 229765a91a6cSKalderon, Michal u8 ll2_syn_handle; 229865a91a6cSKalderon, Michal int payload_len; 2299456a5849SKalderon, Michal u32 hdr_size; 230065a91a6cSKalderon, Michal int rc; 230165a91a6cSKalderon, Michal 230265a91a6cSKalderon, Michal memset(&cm_info, 0, sizeof(cm_info)); 230325f4535aSMichal Kalderon ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 23041e99c497SMichal Kalderon 23051e99c497SMichal Kalderon /* Check if packet was received with errors... */ 23061e99c497SMichal Kalderon if (data->err_flags) { 23071e99c497SMichal Kalderon DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n", 23081e99c497SMichal Kalderon data->err_flags); 23091e99c497SMichal Kalderon goto err; 23101e99c497SMichal Kalderon } 23111e99c497SMichal Kalderon 2312b5c29ca7SKalderon, Michal if (GET_FIELD(data->parse_flags, 2313b5c29ca7SKalderon, Michal PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) && 2314b5c29ca7SKalderon, Michal GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) { 2315b5c29ca7SKalderon, Michal DP_NOTICE(p_hwfn, "Syn packet received with checksum error\n"); 2316b5c29ca7SKalderon, Michal goto err; 2317b5c29ca7SKalderon, Michal } 2318b5c29ca7SKalderon, Michal 231965a91a6cSKalderon, Michal rc = qed_iwarp_parse_rx_pkt(p_hwfn, &cm_info, (u8 *)(buf->data) + 232065a91a6cSKalderon, Michal data->u.placement_offset, remote_mac_addr, 232165a91a6cSKalderon, Michal local_mac_addr, &payload_len, 232265a91a6cSKalderon, Michal &tcp_start_offset); 232365a91a6cSKalderon, Michal if (rc) 232465a91a6cSKalderon, Michal goto err; 2325b5c29ca7SKalderon, Michal 232665a91a6cSKalderon, Michal /* Check if there is a listener for this 4-tuple+vlan */ 232765a91a6cSKalderon, Michal listener = qed_iwarp_get_listener(p_hwfn, &cm_info); 232865a91a6cSKalderon, Michal if (!listener) { 232965a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, 233065a91a6cSKalderon, Michal QED_MSG_RDMA, 233165a91a6cSKalderon, Michal "SYN received on tuple not listened on parse_flags=%d packet len=%d\n", 233265a91a6cSKalderon, Michal data->parse_flags, data->length.packet_length); 233365a91a6cSKalderon, Michal 233465a91a6cSKalderon, Michal memset(&tx_pkt, 0, sizeof(tx_pkt)); 233565a91a6cSKalderon, Michal tx_pkt.num_of_bds = 1; 233665a91a6cSKalderon, Michal tx_pkt.vlan = data->vlan; 233765a91a6cSKalderon, Michal 233865a91a6cSKalderon, Michal if (GET_FIELD(data->parse_flags, 233965a91a6cSKalderon, Michal PARSING_AND_ERR_FLAGS_TAG8021QEXIST)) 234065a91a6cSKalderon, Michal SET_FIELD(tx_pkt.bd_flags, 234165a91a6cSKalderon, Michal CORE_TX_BD_DATA_VLAN_INSERTION, 1); 234265a91a6cSKalderon, Michal 234365a91a6cSKalderon, Michal tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2; 234465a91a6cSKalderon, Michal tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; 234565a91a6cSKalderon, Michal tx_pkt.first_frag = buf->data_phys_addr + 234665a91a6cSKalderon, Michal data->u.placement_offset; 234765a91a6cSKalderon, Michal tx_pkt.first_frag_len = data->length.packet_length; 234865a91a6cSKalderon, Michal tx_pkt.cookie = buf; 234965a91a6cSKalderon, Michal 235065a91a6cSKalderon, Michal rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_syn_handle, 235165a91a6cSKalderon, Michal &tx_pkt, true); 235265a91a6cSKalderon, Michal 235365a91a6cSKalderon, Michal if (rc) { 235465a91a6cSKalderon, Michal DP_NOTICE(p_hwfn, 235565a91a6cSKalderon, Michal "Can't post SYN back to chip rc=%d\n", rc); 235665a91a6cSKalderon, Michal goto err; 235765a91a6cSKalderon, Michal } 235865a91a6cSKalderon, Michal return; 235965a91a6cSKalderon, Michal } 236065a91a6cSKalderon, Michal 236165a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n"); 2362456a5849SKalderon, Michal /* There may be an open ep on this connection if this is a syn 2363456a5849SKalderon, Michal * retrasnmit... need to make sure there isn't... 2364456a5849SKalderon, Michal */ 2365456a5849SKalderon, Michal if (qed_iwarp_ep_exists(p_hwfn, &cm_info)) 2366456a5849SKalderon, Michal goto err; 2367456a5849SKalderon, Michal 2368456a5849SKalderon, Michal ep = qed_iwarp_get_free_ep(p_hwfn); 2369456a5849SKalderon, Michal if (!ep) 2370456a5849SKalderon, Michal goto err; 2371456a5849SKalderon, Michal 2372456a5849SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2373456a5849SKalderon, Michal list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list); 2374456a5849SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2375456a5849SKalderon, Michal 2376456a5849SKalderon, Michal ether_addr_copy(ep->remote_mac_addr, remote_mac_addr); 2377456a5849SKalderon, Michal ether_addr_copy(ep->local_mac_addr, local_mac_addr); 2378456a5849SKalderon, Michal 2379456a5849SKalderon, Michal memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info)); 2380456a5849SKalderon, Michal 2381456a5849SKalderon, Michal if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN) 2382456a5849SKalderon, Michal ts_hdr_size = TIMESTAMP_HEADER_SIZE; 2383456a5849SKalderon, Michal 2384456a5849SKalderon, Michal hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) + 2385456a5849SKalderon, Michal ts_hdr_size; 2386456a5849SKalderon, Michal ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size; 2387456a5849SKalderon, Michal ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss); 2388456a5849SKalderon, Michal 2389456a5849SKalderon, Michal ep->event_cb = listener->event_cb; 2390456a5849SKalderon, Michal ep->cb_context = listener->cb_context; 2391456a5849SKalderon, Michal ep->connect_mode = TCP_CONNECT_PASSIVE; 2392456a5849SKalderon, Michal 2393456a5849SKalderon, Michal ep->syn = buf; 2394456a5849SKalderon, Michal ep->syn_ip_payload_length = (u16)payload_len; 2395456a5849SKalderon, Michal ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset + 2396456a5849SKalderon, Michal tcp_start_offset; 2397456a5849SKalderon, Michal 2398456a5849SKalderon, Michal rc = qed_iwarp_tcp_offload(p_hwfn, ep); 2399456a5849SKalderon, Michal if (rc) { 2400456a5849SKalderon, Michal qed_iwarp_return_ep(p_hwfn, ep); 2401456a5849SKalderon, Michal goto err; 2402456a5849SKalderon, Michal } 2403456a5849SKalderon, Michal 2404456a5849SKalderon, Michal return; 2405b5c29ca7SKalderon, Michal err: 240665a91a6cSKalderon, Michal qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle); 2407b5c29ca7SKalderon, Michal } 2408b5c29ca7SKalderon, Michal 2409b5c29ca7SKalderon, Michal static void qed_iwarp_ll2_rel_rx_pkt(void *cxt, u8 connection_handle, 2410b5c29ca7SKalderon, Michal void *cookie, dma_addr_t rx_buf_addr, 2411b5c29ca7SKalderon, Michal bool b_last_packet) 2412b5c29ca7SKalderon, Michal { 2413b5c29ca7SKalderon, Michal struct qed_iwarp_ll2_buff *buffer = cookie; 2414b5c29ca7SKalderon, Michal struct qed_hwfn *p_hwfn = cxt; 2415b5c29ca7SKalderon, Michal 2416b5c29ca7SKalderon, Michal dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2417b5c29ca7SKalderon, Michal buffer->data, buffer->data_phys_addr); 2418b5c29ca7SKalderon, Michal kfree(buffer); 2419b5c29ca7SKalderon, Michal } 2420b5c29ca7SKalderon, Michal 2421b5c29ca7SKalderon, Michal static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, 2422b5c29ca7SKalderon, Michal void *cookie, dma_addr_t first_frag_addr, 2423b5c29ca7SKalderon, Michal bool b_last_fragment, bool b_last_packet) 2424b5c29ca7SKalderon, Michal { 2425b5c29ca7SKalderon, Michal struct qed_iwarp_ll2_buff *buffer = cookie; 2426d531038eSMichal Kalderon struct qed_iwarp_ll2_buff *piggy; 2427b5c29ca7SKalderon, Michal struct qed_hwfn *p_hwfn = cxt; 2428b5c29ca7SKalderon, Michal 2429d531038eSMichal Kalderon if (!buffer) /* can happen in packed mpa unaligned... */ 2430d531038eSMichal Kalderon return; 2431d531038eSMichal Kalderon 2432b5c29ca7SKalderon, Michal /* this was originally an rx packet, post it back */ 2433d531038eSMichal Kalderon piggy = buffer->piggy_buf; 2434d531038eSMichal Kalderon if (piggy) { 2435d531038eSMichal Kalderon buffer->piggy_buf = NULL; 2436d531038eSMichal Kalderon qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle); 2437d531038eSMichal Kalderon } 2438d531038eSMichal Kalderon 2439b5c29ca7SKalderon, Michal qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); 2440fcb39f6cSMichal Kalderon 2441fcb39f6cSMichal Kalderon if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle) 2442fcb39f6cSMichal Kalderon qed_iwarp_process_pending_pkts(p_hwfn); 2443fcb39f6cSMichal Kalderon 2444fcb39f6cSMichal Kalderon return; 2445b5c29ca7SKalderon, Michal } 2446b5c29ca7SKalderon, Michal 2447b5c29ca7SKalderon, Michal static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, 2448b5c29ca7SKalderon, Michal void *cookie, dma_addr_t first_frag_addr, 2449b5c29ca7SKalderon, Michal bool b_last_fragment, bool b_last_packet) 2450b5c29ca7SKalderon, Michal { 2451b5c29ca7SKalderon, Michal struct qed_iwarp_ll2_buff *buffer = cookie; 2452b5c29ca7SKalderon, Michal struct qed_hwfn *p_hwfn = cxt; 2453b5c29ca7SKalderon, Michal 2454b5c29ca7SKalderon, Michal if (!buffer) 2455b5c29ca7SKalderon, Michal return; 2456b5c29ca7SKalderon, Michal 2457d531038eSMichal Kalderon if (buffer->piggy_buf) { 2458d531038eSMichal Kalderon dma_free_coherent(&p_hwfn->cdev->pdev->dev, 2459d531038eSMichal Kalderon buffer->piggy_buf->buff_size, 2460d531038eSMichal Kalderon buffer->piggy_buf->data, 2461d531038eSMichal Kalderon buffer->piggy_buf->data_phys_addr); 2462d531038eSMichal Kalderon 2463d531038eSMichal Kalderon kfree(buffer->piggy_buf); 2464d531038eSMichal Kalderon } 2465d531038eSMichal Kalderon 2466b5c29ca7SKalderon, Michal dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, 2467b5c29ca7SKalderon, Michal buffer->data, buffer->data_phys_addr); 2468b5c29ca7SKalderon, Michal 2469b5c29ca7SKalderon, Michal kfree(buffer); 2470b5c29ca7SKalderon, Michal } 2471b5c29ca7SKalderon, Michal 2472469981b1SMichal Kalderon /* The only slowpath for iwarp ll2 is unalign flush. When this completion 2473469981b1SMichal Kalderon * is received, need to reset the FPDU. 2474469981b1SMichal Kalderon */ 2475ae3488ffSMichal Kalderon void 2476ae3488ffSMichal Kalderon qed_iwarp_ll2_slowpath(void *cxt, 2477ae3488ffSMichal Kalderon u8 connection_handle, 2478ae3488ffSMichal Kalderon u32 opaque_data_0, u32 opaque_data_1) 2479ae3488ffSMichal Kalderon { 2480469981b1SMichal Kalderon struct unaligned_opaque_data unalign_data; 2481469981b1SMichal Kalderon struct qed_hwfn *p_hwfn = cxt; 2482469981b1SMichal Kalderon struct qed_iwarp_fpdu *fpdu; 2483469981b1SMichal Kalderon 2484469981b1SMichal Kalderon qed_iwarp_mpa_get_data(p_hwfn, &unalign_data, 2485469981b1SMichal Kalderon opaque_data_0, opaque_data_1); 2486469981b1SMichal Kalderon 2487469981b1SMichal Kalderon DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", 2488469981b1SMichal Kalderon unalign_data.cid); 2489469981b1SMichal Kalderon 2490469981b1SMichal Kalderon fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid); 2491469981b1SMichal Kalderon if (fpdu) 2492469981b1SMichal Kalderon memset(fpdu, 0, sizeof(*fpdu)); 2493ae3488ffSMichal Kalderon } 2494ae3488ffSMichal Kalderon 2495b5c29ca7SKalderon, Michal static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 2496b5c29ca7SKalderon, Michal { 2497b5c29ca7SKalderon, Michal struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2498b5c29ca7SKalderon, Michal int rc = 0; 2499b5c29ca7SKalderon, Michal 2500b5c29ca7SKalderon, Michal if (iwarp_info->ll2_syn_handle != QED_IWARP_HANDLE_INVAL) { 2501b5c29ca7SKalderon, Michal rc = qed_ll2_terminate_connection(p_hwfn, 2502b5c29ca7SKalderon, Michal iwarp_info->ll2_syn_handle); 2503b5c29ca7SKalderon, Michal if (rc) 2504b5c29ca7SKalderon, Michal DP_INFO(p_hwfn, "Failed to terminate syn connection\n"); 2505b5c29ca7SKalderon, Michal 2506b5c29ca7SKalderon, Michal qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2507b5c29ca7SKalderon, Michal iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2508b5c29ca7SKalderon, Michal } 2509b5c29ca7SKalderon, Michal 2510d1abfd0bSMichal Kalderon if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) { 2511d1abfd0bSMichal Kalderon rc = qed_ll2_terminate_connection(p_hwfn, 2512d1abfd0bSMichal Kalderon iwarp_info->ll2_ooo_handle); 2513d1abfd0bSMichal Kalderon if (rc) 2514d1abfd0bSMichal Kalderon DP_INFO(p_hwfn, "Failed to terminate ooo connection\n"); 2515d1abfd0bSMichal Kalderon 2516d1abfd0bSMichal Kalderon qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2517d1abfd0bSMichal Kalderon iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2518d1abfd0bSMichal Kalderon } 2519d1abfd0bSMichal Kalderon 2520ae3488ffSMichal Kalderon if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) { 2521ae3488ffSMichal Kalderon rc = qed_ll2_terminate_connection(p_hwfn, 2522ae3488ffSMichal Kalderon iwarp_info->ll2_mpa_handle); 2523ae3488ffSMichal Kalderon if (rc) 2524ae3488ffSMichal Kalderon DP_INFO(p_hwfn, "Failed to terminate mpa connection\n"); 2525ae3488ffSMichal Kalderon 2526ae3488ffSMichal Kalderon qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2527ae3488ffSMichal Kalderon iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2528ae3488ffSMichal Kalderon } 2529ae3488ffSMichal Kalderon 2530b5c29ca7SKalderon, Michal qed_llh_remove_mac_filter(p_hwfn, 2531b5c29ca7SKalderon, Michal p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr); 2532b5c29ca7SKalderon, Michal return rc; 2533b5c29ca7SKalderon, Michal } 2534b5c29ca7SKalderon, Michal 2535b5c29ca7SKalderon, Michal static int 2536b5c29ca7SKalderon, Michal qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn, 2537b5c29ca7SKalderon, Michal int num_rx_bufs, int buff_size, u8 ll2_handle) 2538b5c29ca7SKalderon, Michal { 2539b5c29ca7SKalderon, Michal struct qed_iwarp_ll2_buff *buffer; 2540b5c29ca7SKalderon, Michal int rc = 0; 2541b5c29ca7SKalderon, Michal int i; 2542b5c29ca7SKalderon, Michal 2543b5c29ca7SKalderon, Michal for (i = 0; i < num_rx_bufs; i++) { 2544b5c29ca7SKalderon, Michal buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); 2545b5c29ca7SKalderon, Michal if (!buffer) { 2546b5c29ca7SKalderon, Michal rc = -ENOMEM; 2547b5c29ca7SKalderon, Michal break; 2548b5c29ca7SKalderon, Michal } 2549b5c29ca7SKalderon, Michal 2550b5c29ca7SKalderon, Michal buffer->data = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 2551b5c29ca7SKalderon, Michal buff_size, 2552b5c29ca7SKalderon, Michal &buffer->data_phys_addr, 2553b5c29ca7SKalderon, Michal GFP_KERNEL); 2554b5c29ca7SKalderon, Michal if (!buffer->data) { 2555b5c29ca7SKalderon, Michal kfree(buffer); 2556b5c29ca7SKalderon, Michal rc = -ENOMEM; 2557b5c29ca7SKalderon, Michal break; 2558b5c29ca7SKalderon, Michal } 2559b5c29ca7SKalderon, Michal 2560b5c29ca7SKalderon, Michal buffer->buff_size = buff_size; 2561b5c29ca7SKalderon, Michal rc = qed_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle); 2562b5c29ca7SKalderon, Michal if (rc) 2563b5c29ca7SKalderon, Michal /* buffers will be deallocated by qed_ll2 */ 2564b5c29ca7SKalderon, Michal break; 2565b5c29ca7SKalderon, Michal } 2566b5c29ca7SKalderon, Michal return rc; 2567b5c29ca7SKalderon, Michal } 2568b5c29ca7SKalderon, Michal 2569b5c29ca7SKalderon, Michal #define QED_IWARP_MAX_BUF_SIZE(mtu) \ 2570b5c29ca7SKalderon, Michal ALIGN((mtu) + ETH_HLEN + 2 * VLAN_HLEN + 2 + ETH_CACHE_LINE_SIZE, \ 2571b5c29ca7SKalderon, Michal ETH_CACHE_LINE_SIZE) 2572b5c29ca7SKalderon, Michal 2573b5c29ca7SKalderon, Michal static int 2574b5c29ca7SKalderon, Michal qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, 2575b5c29ca7SKalderon, Michal struct qed_rdma_start_in_params *params, 2576b5c29ca7SKalderon, Michal struct qed_ptt *p_ptt) 2577b5c29ca7SKalderon, Michal { 2578b5c29ca7SKalderon, Michal struct qed_iwarp_info *iwarp_info; 2579b5c29ca7SKalderon, Michal struct qed_ll2_acquire_data data; 2580b5c29ca7SKalderon, Michal struct qed_ll2_cbs cbs; 2581ae3488ffSMichal Kalderon u32 mpa_buff_size; 2582d1abfd0bSMichal Kalderon u16 n_ooo_bufs; 2583b5c29ca7SKalderon, Michal int rc = 0; 2584fcb39f6cSMichal Kalderon int i; 2585b5c29ca7SKalderon, Michal 2586b5c29ca7SKalderon, Michal iwarp_info = &p_hwfn->p_rdma_info->iwarp; 2587b5c29ca7SKalderon, Michal iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; 2588d1abfd0bSMichal Kalderon iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; 2589ae3488ffSMichal Kalderon iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; 2590b5c29ca7SKalderon, Michal 2591b5c29ca7SKalderon, Michal iwarp_info->max_mtu = params->max_mtu; 2592b5c29ca7SKalderon, Michal 2593b5c29ca7SKalderon, Michal ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr); 2594b5c29ca7SKalderon, Michal 2595b5c29ca7SKalderon, Michal rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr); 2596b5c29ca7SKalderon, Michal if (rc) 2597b5c29ca7SKalderon, Michal return rc; 2598b5c29ca7SKalderon, Michal 2599b5c29ca7SKalderon, Michal /* Start SYN connection */ 2600b5c29ca7SKalderon, Michal cbs.rx_comp_cb = qed_iwarp_ll2_comp_syn_pkt; 2601b5c29ca7SKalderon, Michal cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt; 2602b5c29ca7SKalderon, Michal cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt; 2603b5c29ca7SKalderon, Michal cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt; 2604b5c29ca7SKalderon, Michal cbs.cookie = p_hwfn; 2605b5c29ca7SKalderon, Michal 2606b5c29ca7SKalderon, Michal memset(&data, 0, sizeof(data)); 2607b5c29ca7SKalderon, Michal data.input.conn_type = QED_LL2_TYPE_IWARP; 2608b5c29ca7SKalderon, Michal data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE; 2609b5c29ca7SKalderon, Michal data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE; 2610b5c29ca7SKalderon, Michal data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE; 2611b5c29ca7SKalderon, Michal data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2612b5c29ca7SKalderon, Michal data.input.tx_tc = PKT_LB_TC; 2613b5c29ca7SKalderon, Michal data.input.tx_dest = QED_LL2_TX_DEST_LB; 2614b5c29ca7SKalderon, Michal data.p_connection_handle = &iwarp_info->ll2_syn_handle; 2615b5c29ca7SKalderon, Michal data.cbs = &cbs; 2616b5c29ca7SKalderon, Michal 2617b5c29ca7SKalderon, Michal rc = qed_ll2_acquire_connection(p_hwfn, &data); 2618b5c29ca7SKalderon, Michal if (rc) { 2619b5c29ca7SKalderon, Michal DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n"); 2620b5c29ca7SKalderon, Michal qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr); 2621b5c29ca7SKalderon, Michal return rc; 2622b5c29ca7SKalderon, Michal } 2623b5c29ca7SKalderon, Michal 2624b5c29ca7SKalderon, Michal rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle); 2625b5c29ca7SKalderon, Michal if (rc) { 2626b5c29ca7SKalderon, Michal DP_NOTICE(p_hwfn, "Failed to establish LL2 connection\n"); 2627b5c29ca7SKalderon, Michal goto err; 2628b5c29ca7SKalderon, Michal } 2629b5c29ca7SKalderon, Michal 2630b5c29ca7SKalderon, Michal rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2631b5c29ca7SKalderon, Michal QED_IWARP_LL2_SYN_RX_SIZE, 2632b5c29ca7SKalderon, Michal QED_IWARP_MAX_SYN_PKT_SIZE, 2633b5c29ca7SKalderon, Michal iwarp_info->ll2_syn_handle); 2634b5c29ca7SKalderon, Michal if (rc) 2635b5c29ca7SKalderon, Michal goto err; 2636b5c29ca7SKalderon, Michal 2637d1abfd0bSMichal Kalderon /* Start OOO connection */ 2638d1abfd0bSMichal Kalderon data.input.conn_type = QED_LL2_TYPE_OOO; 2639d1abfd0bSMichal Kalderon data.input.mtu = params->max_mtu; 2640d1abfd0bSMichal Kalderon 2641d1abfd0bSMichal Kalderon n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) / 2642d1abfd0bSMichal Kalderon iwarp_info->max_mtu; 2643d1abfd0bSMichal Kalderon n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE); 2644d1abfd0bSMichal Kalderon 2645d1abfd0bSMichal Kalderon data.input.rx_num_desc = n_ooo_bufs; 2646d1abfd0bSMichal Kalderon data.input.rx_num_ooo_buffers = n_ooo_bufs; 2647d1abfd0bSMichal Kalderon 2648d1abfd0bSMichal Kalderon data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ 2649d1abfd0bSMichal Kalderon data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE; 2650d1abfd0bSMichal Kalderon data.p_connection_handle = &iwarp_info->ll2_ooo_handle; 2651d1abfd0bSMichal Kalderon 2652d1abfd0bSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 2653d1abfd0bSMichal Kalderon if (rc) 2654d1abfd0bSMichal Kalderon goto err; 2655d1abfd0bSMichal Kalderon 2656d1abfd0bSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle); 2657d1abfd0bSMichal Kalderon if (rc) 2658d1abfd0bSMichal Kalderon goto err; 2659d1abfd0bSMichal Kalderon 2660ae3488ffSMichal Kalderon /* Start Unaligned MPA connection */ 2661ae3488ffSMichal Kalderon cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt; 2662ae3488ffSMichal Kalderon cbs.slowpath_cb = qed_iwarp_ll2_slowpath; 2663ae3488ffSMichal Kalderon 2664ae3488ffSMichal Kalderon memset(&data, 0, sizeof(data)); 2665ae3488ffSMichal Kalderon data.input.conn_type = QED_LL2_TYPE_IWARP; 2666ae3488ffSMichal Kalderon data.input.mtu = params->max_mtu; 2667ae3488ffSMichal Kalderon /* FW requires that once a packet arrives OOO, it must have at 2668ae3488ffSMichal Kalderon * least 2 rx buffers available on the unaligned connection 2669ae3488ffSMichal Kalderon * for handling the case that it is a partial fpdu. 2670ae3488ffSMichal Kalderon */ 2671ae3488ffSMichal Kalderon data.input.rx_num_desc = n_ooo_bufs * 2; 2672ae3488ffSMichal Kalderon data.input.tx_num_desc = data.input.rx_num_desc; 2673ae3488ffSMichal Kalderon data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU; 2674ae3488ffSMichal Kalderon data.p_connection_handle = &iwarp_info->ll2_mpa_handle; 2675ae3488ffSMichal Kalderon data.input.secondary_queue = true; 2676ae3488ffSMichal Kalderon data.cbs = &cbs; 2677ae3488ffSMichal Kalderon 2678ae3488ffSMichal Kalderon rc = qed_ll2_acquire_connection(p_hwfn, &data); 2679ae3488ffSMichal Kalderon if (rc) 2680ae3488ffSMichal Kalderon goto err; 2681ae3488ffSMichal Kalderon 2682ae3488ffSMichal Kalderon rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle); 2683ae3488ffSMichal Kalderon if (rc) 2684ae3488ffSMichal Kalderon goto err; 2685ae3488ffSMichal Kalderon 2686ae3488ffSMichal Kalderon mpa_buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu); 2687ae3488ffSMichal Kalderon rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, 2688ae3488ffSMichal Kalderon data.input.rx_num_desc, 2689ae3488ffSMichal Kalderon mpa_buff_size, 2690ae3488ffSMichal Kalderon iwarp_info->ll2_mpa_handle); 2691ae3488ffSMichal Kalderon if (rc) 2692ae3488ffSMichal Kalderon goto err; 2693469981b1SMichal Kalderon 2694469981b1SMichal Kalderon iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps, 2695469981b1SMichal Kalderon sizeof(*iwarp_info->partial_fpdus), 2696469981b1SMichal Kalderon GFP_KERNEL); 2697469981b1SMichal Kalderon if (!iwarp_info->partial_fpdus) 2698469981b1SMichal Kalderon goto err; 2699469981b1SMichal Kalderon 2700469981b1SMichal Kalderon iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps; 27011e28eaadSMichal Kalderon 27021e28eaadSMichal Kalderon iwarp_info->mpa_intermediate_buf = kzalloc(mpa_buff_size, GFP_KERNEL); 27031e28eaadSMichal Kalderon if (!iwarp_info->mpa_intermediate_buf) 27041e28eaadSMichal Kalderon goto err; 27051e28eaadSMichal Kalderon 2706fcb39f6cSMichal Kalderon /* The mpa_bufs array serves for pending RX packets received on the 2707fcb39f6cSMichal Kalderon * mpa ll2 that don't have place on the tx ring and require later 2708fcb39f6cSMichal Kalderon * processing. We can't fail on allocation of such a struct therefore 2709fcb39f6cSMichal Kalderon * we allocate enough to take care of all rx packets 2710fcb39f6cSMichal Kalderon */ 2711fcb39f6cSMichal Kalderon iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc, 2712fcb39f6cSMichal Kalderon sizeof(*iwarp_info->mpa_bufs), 2713fcb39f6cSMichal Kalderon GFP_KERNEL); 2714fcb39f6cSMichal Kalderon if (!iwarp_info->mpa_bufs) 2715fcb39f6cSMichal Kalderon goto err; 2716fcb39f6cSMichal Kalderon 2717fcb39f6cSMichal Kalderon INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list); 2718fcb39f6cSMichal Kalderon INIT_LIST_HEAD(&iwarp_info->mpa_buf_list); 2719fcb39f6cSMichal Kalderon for (i = 0; i < data.input.rx_num_desc; i++) 2720fcb39f6cSMichal Kalderon list_add_tail(&iwarp_info->mpa_bufs[i].list_entry, 2721fcb39f6cSMichal Kalderon &iwarp_info->mpa_buf_list); 2722b5c29ca7SKalderon, Michal return rc; 2723b5c29ca7SKalderon, Michal err: 2724b5c29ca7SKalderon, Michal qed_iwarp_ll2_stop(p_hwfn, p_ptt); 2725b5c29ca7SKalderon, Michal 2726b5c29ca7SKalderon, Michal return rc; 2727b5c29ca7SKalderon, Michal } 2728b5c29ca7SKalderon, Michal 272967b40dccSKalderon, Michal int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, 273067b40dccSKalderon, Michal struct qed_rdma_start_in_params *params) 273167b40dccSKalderon, Michal { 273267b40dccSKalderon, Michal struct qed_iwarp_info *iwarp_info; 273367b40dccSKalderon, Michal u32 rcv_wnd_size; 273467b40dccSKalderon, Michal 273567b40dccSKalderon, Michal iwarp_info = &p_hwfn->p_rdma_info->iwarp; 273667b40dccSKalderon, Michal 273767b40dccSKalderon, Michal iwarp_info->tcp_flags = QED_IWARP_TS_EN; 273867b40dccSKalderon, Michal rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF; 273967b40dccSKalderon, Michal 274067b40dccSKalderon, Michal /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ 274167b40dccSKalderon, Michal iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) - 274267b40dccSKalderon, Michal ilog2(QED_IWARP_RCV_WND_SIZE_MIN); 274367b40dccSKalderon, Michal iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED; 274467b40dccSKalderon, Michal iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; 274567b40dccSKalderon, Michal 274667b40dccSKalderon, Michal iwarp_info->peer2peer = QED_IWARP_PARAM_P2P; 274767b40dccSKalderon, Michal 2748456a5849SKalderon, Michal iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND | 2749456a5849SKalderon, Michal MPA_RTR_TYPE_ZERO_WRITE | 2750456a5849SKalderon, Michal MPA_RTR_TYPE_ZERO_READ; 2751456a5849SKalderon, Michal 275267b40dccSKalderon, Michal spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock); 2753456a5849SKalderon, Michal INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list); 275465a91a6cSKalderon, Michal INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list); 275567b40dccSKalderon, Michal 275667b40dccSKalderon, Michal qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, 275767b40dccSKalderon, Michal qed_iwarp_async_event); 2758d1abfd0bSMichal Kalderon qed_ooo_setup(p_hwfn); 275967b40dccSKalderon, Michal 2760b5c29ca7SKalderon, Michal return qed_iwarp_ll2_start(p_hwfn, params, p_ptt); 276167b40dccSKalderon, Michal } 276267b40dccSKalderon, Michal 276367b40dccSKalderon, Michal int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) 276467b40dccSKalderon, Michal { 276567b40dccSKalderon, Michal int rc; 276667b40dccSKalderon, Michal 2767456a5849SKalderon, Michal qed_iwarp_free_prealloc_ep(p_hwfn); 276867b40dccSKalderon, Michal rc = qed_iwarp_wait_for_all_cids(p_hwfn); 276967b40dccSKalderon, Michal if (rc) 277067b40dccSKalderon, Michal return rc; 277167b40dccSKalderon, Michal 277267b40dccSKalderon, Michal qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP); 277367b40dccSKalderon, Michal 2774b5c29ca7SKalderon, Michal return qed_iwarp_ll2_stop(p_hwfn, p_ptt); 277567b40dccSKalderon, Michal } 277667b40dccSKalderon, Michal 2777fc4c6065SKalderon, Michal void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn, 2778fc4c6065SKalderon, Michal struct qed_iwarp_ep *ep, u8 fw_return_code) 2779fc4c6065SKalderon, Michal { 2780fc4c6065SKalderon, Michal struct qed_iwarp_cm_event_params params; 2781fc4c6065SKalderon, Michal 2782fc4c6065SKalderon, Michal qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_ERROR, true); 2783fc4c6065SKalderon, Michal 2784fc4c6065SKalderon, Michal params.event = QED_IWARP_EVENT_CLOSE; 2785fc4c6065SKalderon, Michal params.ep_context = ep; 2786fc4c6065SKalderon, Michal params.cm_info = &ep->cm_info; 2787fc4c6065SKalderon, Michal params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ? 2788fc4c6065SKalderon, Michal 0 : -ECONNRESET; 2789fc4c6065SKalderon, Michal 2790fc4c6065SKalderon, Michal ep->state = QED_IWARP_EP_CLOSED; 2791fc4c6065SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2792fc4c6065SKalderon, Michal list_del(&ep->list_entry); 2793fc4c6065SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 2794fc4c6065SKalderon, Michal 2795fc4c6065SKalderon, Michal ep->event_cb(ep->cb_context, ¶ms); 2796fc4c6065SKalderon, Michal } 2797fc4c6065SKalderon, Michal 2798fc4c6065SKalderon, Michal void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn, 2799fc4c6065SKalderon, Michal struct qed_iwarp_ep *ep, int fw_ret_code) 2800fc4c6065SKalderon, Michal { 2801fc4c6065SKalderon, Michal struct qed_iwarp_cm_event_params params; 2802fc4c6065SKalderon, Michal bool event_cb = false; 2803fc4c6065SKalderon, Michal 2804fc4c6065SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n", 2805fc4c6065SKalderon, Michal ep->cid, fw_ret_code); 2806fc4c6065SKalderon, Michal 2807fc4c6065SKalderon, Michal switch (fw_ret_code) { 2808fc4c6065SKalderon, Michal case IWARP_EXCEPTION_DETECTED_LLP_CLOSED: 2809fc4c6065SKalderon, Michal params.status = 0; 2810fc4c6065SKalderon, Michal params.event = QED_IWARP_EVENT_DISCONNECT; 2811fc4c6065SKalderon, Michal event_cb = true; 2812fc4c6065SKalderon, Michal break; 2813fc4c6065SKalderon, Michal case IWARP_EXCEPTION_DETECTED_LLP_RESET: 2814fc4c6065SKalderon, Michal params.status = -ECONNRESET; 2815fc4c6065SKalderon, Michal params.event = QED_IWARP_EVENT_DISCONNECT; 2816fc4c6065SKalderon, Michal event_cb = true; 2817fc4c6065SKalderon, Michal break; 28189816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_RQ_EMPTY: 28199816b614SKalderon, Michal params.event = QED_IWARP_EVENT_RQ_EMPTY; 28209816b614SKalderon, Michal event_cb = true; 28219816b614SKalderon, Michal break; 28229816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_IRQ_FULL: 28239816b614SKalderon, Michal params.event = QED_IWARP_EVENT_IRQ_FULL; 28249816b614SKalderon, Michal event_cb = true; 28259816b614SKalderon, Michal break; 28269816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT: 28279816b614SKalderon, Michal params.event = QED_IWARP_EVENT_LLP_TIMEOUT; 28289816b614SKalderon, Michal event_cb = true; 28299816b614SKalderon, Michal break; 28309816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR: 28319816b614SKalderon, Michal params.event = QED_IWARP_EVENT_REMOTE_PROTECTION_ERROR; 28329816b614SKalderon, Michal event_cb = true; 28339816b614SKalderon, Michal break; 28349816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW: 28359816b614SKalderon, Michal params.event = QED_IWARP_EVENT_CQ_OVERFLOW; 28369816b614SKalderon, Michal event_cb = true; 28379816b614SKalderon, Michal break; 28389816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC: 28399816b614SKalderon, Michal params.event = QED_IWARP_EVENT_QP_CATASTROPHIC; 28409816b614SKalderon, Michal event_cb = true; 28419816b614SKalderon, Michal break; 28429816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR: 28439816b614SKalderon, Michal params.event = QED_IWARP_EVENT_LOCAL_ACCESS_ERROR; 28449816b614SKalderon, Michal event_cb = true; 28459816b614SKalderon, Michal break; 28469816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR: 28479816b614SKalderon, Michal params.event = QED_IWARP_EVENT_REMOTE_OPERATION_ERROR; 28489816b614SKalderon, Michal event_cb = true; 28499816b614SKalderon, Michal break; 28509816b614SKalderon, Michal case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED: 28519816b614SKalderon, Michal params.event = QED_IWARP_EVENT_TERMINATE_RECEIVED; 28529816b614SKalderon, Michal event_cb = true; 28539816b614SKalderon, Michal break; 2854fc4c6065SKalderon, Michal default: 2855fc4c6065SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 2856fc4c6065SKalderon, Michal "Unhandled exception received...fw_ret_code=%d\n", 2857fc4c6065SKalderon, Michal fw_ret_code); 2858fc4c6065SKalderon, Michal break; 2859fc4c6065SKalderon, Michal } 2860fc4c6065SKalderon, Michal 2861fc4c6065SKalderon, Michal if (event_cb) { 2862fc4c6065SKalderon, Michal params.ep_context = ep; 2863fc4c6065SKalderon, Michal params.cm_info = &ep->cm_info; 2864fc4c6065SKalderon, Michal ep->event_cb(ep->cb_context, ¶ms); 2865fc4c6065SKalderon, Michal } 2866fc4c6065SKalderon, Michal } 2867fc4c6065SKalderon, Michal 28689816b614SKalderon, Michal static void 28699816b614SKalderon, Michal qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn, 28709816b614SKalderon, Michal struct qed_iwarp_ep *ep, u8 fw_return_code) 28719816b614SKalderon, Michal { 28729816b614SKalderon, Michal struct qed_iwarp_cm_event_params params; 28739816b614SKalderon, Michal 28749816b614SKalderon, Michal memset(¶ms, 0, sizeof(params)); 28759816b614SKalderon, Michal params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE; 28769816b614SKalderon, Michal params.ep_context = ep; 28779816b614SKalderon, Michal params.cm_info = &ep->cm_info; 28789816b614SKalderon, Michal ep->state = QED_IWARP_EP_CLOSED; 28799816b614SKalderon, Michal 28809816b614SKalderon, Michal switch (fw_return_code) { 28819816b614SKalderon, Michal case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET: 28829816b614SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 28839816b614SKalderon, Michal "%s(0x%x) TCP connect got invalid packet\n", 28849816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 28859816b614SKalderon, Michal params.status = -ECONNRESET; 28869816b614SKalderon, Michal break; 28879816b614SKalderon, Michal case IWARP_CONN_ERROR_TCP_CONNECTION_RST: 28889816b614SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 28899816b614SKalderon, Michal "%s(0x%x) TCP Connection Reset\n", 28909816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 28919816b614SKalderon, Michal params.status = -ECONNRESET; 28929816b614SKalderon, Michal break; 28939816b614SKalderon, Michal case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT: 28949816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) TCP timeout\n", 28959816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 28969816b614SKalderon, Michal params.status = -EBUSY; 28979816b614SKalderon, Michal break; 28989816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER: 28999816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA not supported VER\n", 29009816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 29019816b614SKalderon, Michal params.status = -ECONNREFUSED; 29029816b614SKalderon, Michal break; 29039816b614SKalderon, Michal case IWARP_CONN_ERROR_MPA_INVALID_PACKET: 29049816b614SKalderon, Michal DP_NOTICE(p_hwfn, "%s(0x%x) MPA Invalid Packet\n", 29059816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid); 29069816b614SKalderon, Michal params.status = -ECONNRESET; 29079816b614SKalderon, Michal break; 29089816b614SKalderon, Michal default: 29099816b614SKalderon, Michal DP_ERR(p_hwfn, 29109816b614SKalderon, Michal "%s(0x%x) Unexpected return code tcp connect: %d\n", 29119816b614SKalderon, Michal QED_IWARP_CONNECT_MODE_STRING(ep), 29129816b614SKalderon, Michal ep->tcp_cid, fw_return_code); 29139816b614SKalderon, Michal params.status = -ECONNRESET; 29149816b614SKalderon, Michal break; 29159816b614SKalderon, Michal } 29169816b614SKalderon, Michal 29179816b614SKalderon, Michal if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 29189816b614SKalderon, Michal ep->tcp_cid = QED_IWARP_INVALID_TCP_CID; 29199816b614SKalderon, Michal qed_iwarp_return_ep(p_hwfn, ep); 29209816b614SKalderon, Michal } else { 29219816b614SKalderon, Michal ep->event_cb(ep->cb_context, ¶ms); 29229816b614SKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 29239816b614SKalderon, Michal list_del(&ep->list_entry); 29249816b614SKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 29259816b614SKalderon, Michal } 29269816b614SKalderon, Michal } 29279816b614SKalderon, Michal 2928456a5849SKalderon, Michal void 2929456a5849SKalderon, Michal qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn, 2930456a5849SKalderon, Michal struct qed_iwarp_ep *ep, u8 fw_return_code) 2931456a5849SKalderon, Michal { 29324b0fdd7cSKalderon, Michal u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; 29334b0fdd7cSKalderon, Michal 29344b0fdd7cSKalderon, Michal if (ep->connect_mode == TCP_CONNECT_PASSIVE) { 2935456a5849SKalderon, Michal /* Done with the SYN packet, post back to ll2 rx */ 29364b0fdd7cSKalderon, Michal qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle); 29374b0fdd7cSKalderon, Michal 2938456a5849SKalderon, Michal ep->syn = NULL; 2939456a5849SKalderon, Michal 2940456a5849SKalderon, Michal /* If connect failed - upper layer doesn't know about it */ 29419816b614SKalderon, Michal if (fw_return_code == RDMA_RETURN_OK) 2942456a5849SKalderon, Michal qed_iwarp_mpa_received(p_hwfn, ep); 29439816b614SKalderon, Michal else 29449816b614SKalderon, Michal qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 29459816b614SKalderon, Michal fw_return_code); 29464b0fdd7cSKalderon, Michal } else { 29479816b614SKalderon, Michal if (fw_return_code == RDMA_RETURN_OK) 29484b0fdd7cSKalderon, Michal qed_iwarp_mpa_offload(p_hwfn, ep); 29499816b614SKalderon, Michal else 29509816b614SKalderon, Michal qed_iwarp_tcp_connect_unsuccessful(p_hwfn, ep, 29519816b614SKalderon, Michal fw_return_code); 29524b0fdd7cSKalderon, Michal } 2953456a5849SKalderon, Michal } 2954456a5849SKalderon, Michal 2955456a5849SKalderon, Michal static inline bool 2956456a5849SKalderon, Michal qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep) 2957456a5849SKalderon, Michal { 2958456a5849SKalderon, Michal if (!ep || (ep->sig != QED_EP_SIG)) { 2959456a5849SKalderon, Michal DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep); 2960456a5849SKalderon, Michal return false; 2961456a5849SKalderon, Michal } 2962456a5849SKalderon, Michal 2963456a5849SKalderon, Michal return true; 2964456a5849SKalderon, Michal } 2965456a5849SKalderon, Michal 296667b40dccSKalderon, Michal static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, 296767b40dccSKalderon, Michal u8 fw_event_code, u16 echo, 296867b40dccSKalderon, Michal union event_ring_data *data, 296967b40dccSKalderon, Michal u8 fw_return_code) 297067b40dccSKalderon, Michal { 2971456a5849SKalderon, Michal struct regpair *fw_handle = &data->rdma_data.async_handle; 2972456a5849SKalderon, Michal struct qed_iwarp_ep *ep = NULL; 2973456a5849SKalderon, Michal u16 cid; 2974456a5849SKalderon, Michal 2975456a5849SKalderon, Michal ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi, 2976456a5849SKalderon, Michal fw_handle->lo); 2977456a5849SKalderon, Michal 2978456a5849SKalderon, Michal switch (fw_event_code) { 2979456a5849SKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE: 2980456a5849SKalderon, Michal /* Async completion after TCP 3-way handshake */ 2981456a5849SKalderon, Michal if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2982456a5849SKalderon, Michal return -EINVAL; 2983456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, 2984456a5849SKalderon, Michal QED_MSG_RDMA, 2985456a5849SKalderon, Michal "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n", 2986456a5849SKalderon, Michal ep->tcp_cid, fw_return_code); 2987456a5849SKalderon, Michal qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code); 2988456a5849SKalderon, Michal break; 2989fc4c6065SKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED: 2990fc4c6065SKalderon, Michal if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 2991fc4c6065SKalderon, Michal return -EINVAL; 2992fc4c6065SKalderon, Michal DP_VERBOSE(p_hwfn, 2993fc4c6065SKalderon, Michal QED_MSG_RDMA, 2994fc4c6065SKalderon, Michal "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n", 2995fc4c6065SKalderon, Michal ep->cid, fw_return_code); 2996fc4c6065SKalderon, Michal qed_iwarp_exception_received(p_hwfn, ep, fw_return_code); 2997fc4c6065SKalderon, Michal break; 2998fc4c6065SKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE: 2999fc4c6065SKalderon, Michal /* Async completion for Close Connection ramrod */ 3000fc4c6065SKalderon, Michal if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3001fc4c6065SKalderon, Michal return -EINVAL; 3002fc4c6065SKalderon, Michal DP_VERBOSE(p_hwfn, 3003fc4c6065SKalderon, Michal QED_MSG_RDMA, 3004fc4c6065SKalderon, Michal "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n", 3005fc4c6065SKalderon, Michal ep->cid, fw_return_code); 3006fc4c6065SKalderon, Michal qed_iwarp_qp_in_error(p_hwfn, ep, fw_return_code); 3007fc4c6065SKalderon, Michal break; 30084b0fdd7cSKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED: 3009fc4c6065SKalderon, Michal /* Async event for active side only */ 30104b0fdd7cSKalderon, Michal if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 30114b0fdd7cSKalderon, Michal return -EINVAL; 30124b0fdd7cSKalderon, Michal DP_VERBOSE(p_hwfn, 30134b0fdd7cSKalderon, Michal QED_MSG_RDMA, 30144b0fdd7cSKalderon, Michal "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n", 30154b0fdd7cSKalderon, Michal ep->cid, fw_return_code); 30164b0fdd7cSKalderon, Michal qed_iwarp_mpa_reply_arrived(p_hwfn, ep); 30174b0fdd7cSKalderon, Michal break; 3018456a5849SKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE: 3019456a5849SKalderon, Michal if (!qed_iwarp_check_ep_ok(p_hwfn, ep)) 3020456a5849SKalderon, Michal return -EINVAL; 3021456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, 3022456a5849SKalderon, Michal QED_MSG_RDMA, 3023456a5849SKalderon, Michal "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n", 3024456a5849SKalderon, Michal ep->cid, fw_return_code); 3025456a5849SKalderon, Michal qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code); 3026456a5849SKalderon, Michal break; 3027456a5849SKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED: 3028456a5849SKalderon, Michal cid = (u16)le32_to_cpu(fw_handle->lo); 3029456a5849SKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, 3030456a5849SKalderon, Michal "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid); 3031456a5849SKalderon, Michal qed_iwarp_cid_cleaned(p_hwfn, cid); 3032456a5849SKalderon, Michal 3033456a5849SKalderon, Michal break; 30349816b614SKalderon, Michal case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW: 30359816b614SKalderon, Michal DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n"); 30369816b614SKalderon, Michal 30379816b614SKalderon, Michal p_hwfn->p_rdma_info->events.affiliated_event( 30389816b614SKalderon, Michal p_hwfn->p_rdma_info->events.context, 30399816b614SKalderon, Michal QED_IWARP_EVENT_CQ_OVERFLOW, 30409816b614SKalderon, Michal (void *)fw_handle); 30419816b614SKalderon, Michal break; 30429816b614SKalderon, Michal default: 30439816b614SKalderon, Michal DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n", 30449816b614SKalderon, Michal fw_event_code); 30459816b614SKalderon, Michal return -EINVAL; 3046456a5849SKalderon, Michal } 304767b40dccSKalderon, Michal return 0; 304867b40dccSKalderon, Michal } 304967b40dccSKalderon, Michal 305065a91a6cSKalderon, Michal int 305165a91a6cSKalderon, Michal qed_iwarp_create_listen(void *rdma_cxt, 305265a91a6cSKalderon, Michal struct qed_iwarp_listen_in *iparams, 305365a91a6cSKalderon, Michal struct qed_iwarp_listen_out *oparams) 305465a91a6cSKalderon, Michal { 305565a91a6cSKalderon, Michal struct qed_hwfn *p_hwfn = rdma_cxt; 305665a91a6cSKalderon, Michal struct qed_iwarp_listener *listener; 305765a91a6cSKalderon, Michal 305865a91a6cSKalderon, Michal listener = kzalloc(sizeof(*listener), GFP_KERNEL); 305965a91a6cSKalderon, Michal if (!listener) 306065a91a6cSKalderon, Michal return -ENOMEM; 306165a91a6cSKalderon, Michal 306265a91a6cSKalderon, Michal listener->ip_version = iparams->ip_version; 306365a91a6cSKalderon, Michal memcpy(listener->ip_addr, iparams->ip_addr, sizeof(listener->ip_addr)); 306465a91a6cSKalderon, Michal listener->port = iparams->port; 306565a91a6cSKalderon, Michal listener->vlan = iparams->vlan; 306665a91a6cSKalderon, Michal 306765a91a6cSKalderon, Michal listener->event_cb = iparams->event_cb; 306865a91a6cSKalderon, Michal listener->cb_context = iparams->cb_context; 306965a91a6cSKalderon, Michal listener->max_backlog = iparams->max_backlog; 307065a91a6cSKalderon, Michal oparams->handle = listener; 307165a91a6cSKalderon, Michal 307265a91a6cSKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 307365a91a6cSKalderon, Michal list_add_tail(&listener->list_entry, 307465a91a6cSKalderon, Michal &p_hwfn->p_rdma_info->iwarp.listen_list); 307565a91a6cSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 307665a91a6cSKalderon, Michal 307765a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, 307865a91a6cSKalderon, Michal QED_MSG_RDMA, 307965a91a6cSKalderon, Michal "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n", 308065a91a6cSKalderon, Michal listener->event_cb, 308165a91a6cSKalderon, Michal listener, 308265a91a6cSKalderon, Michal listener->ip_addr[0], 308365a91a6cSKalderon, Michal listener->ip_addr[1], 308465a91a6cSKalderon, Michal listener->ip_addr[2], 308565a91a6cSKalderon, Michal listener->ip_addr[3], listener->port, listener->vlan); 308665a91a6cSKalderon, Michal 308765a91a6cSKalderon, Michal return 0; 308865a91a6cSKalderon, Michal } 308965a91a6cSKalderon, Michal 309065a91a6cSKalderon, Michal int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle) 309165a91a6cSKalderon, Michal { 309265a91a6cSKalderon, Michal struct qed_iwarp_listener *listener = handle; 309365a91a6cSKalderon, Michal struct qed_hwfn *p_hwfn = rdma_cxt; 309465a91a6cSKalderon, Michal 309565a91a6cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "handle=%p\n", handle); 309665a91a6cSKalderon, Michal 309765a91a6cSKalderon, Michal spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 309865a91a6cSKalderon, Michal list_del(&listener->list_entry); 309965a91a6cSKalderon, Michal spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock); 310065a91a6cSKalderon, Michal 310165a91a6cSKalderon, Michal kfree(listener); 310265a91a6cSKalderon, Michal 310365a91a6cSKalderon, Michal return 0; 310465a91a6cSKalderon, Michal } 310565a91a6cSKalderon, Michal 31064b0fdd7cSKalderon, Michal int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams) 31074b0fdd7cSKalderon, Michal { 31084b0fdd7cSKalderon, Michal struct qed_hwfn *p_hwfn = rdma_cxt; 31094b0fdd7cSKalderon, Michal struct qed_sp_init_data init_data; 31104b0fdd7cSKalderon, Michal struct qed_spq_entry *p_ent; 31114b0fdd7cSKalderon, Michal struct qed_iwarp_ep *ep; 31124b0fdd7cSKalderon, Michal struct qed_rdma_qp *qp; 31134b0fdd7cSKalderon, Michal int rc; 31144b0fdd7cSKalderon, Michal 31154b0fdd7cSKalderon, Michal ep = iparams->ep_context; 31164b0fdd7cSKalderon, Michal if (!ep) { 31174b0fdd7cSKalderon, Michal DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n"); 31184b0fdd7cSKalderon, Michal return -EINVAL; 31194b0fdd7cSKalderon, Michal } 31204b0fdd7cSKalderon, Michal 31214b0fdd7cSKalderon, Michal qp = ep->qp; 31224b0fdd7cSKalderon, Michal 31234b0fdd7cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n", 31244b0fdd7cSKalderon, Michal qp->icid, ep->tcp_cid); 31254b0fdd7cSKalderon, Michal 31264b0fdd7cSKalderon, Michal memset(&init_data, 0, sizeof(init_data)); 31274b0fdd7cSKalderon, Michal init_data.cid = qp->icid; 31284b0fdd7cSKalderon, Michal init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; 31294b0fdd7cSKalderon, Michal init_data.comp_mode = QED_SPQ_MODE_CB; 31304b0fdd7cSKalderon, Michal 31314b0fdd7cSKalderon, Michal rc = qed_sp_init_request(p_hwfn, &p_ent, 31324b0fdd7cSKalderon, Michal IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR, 31334b0fdd7cSKalderon, Michal PROTOCOLID_IWARP, &init_data); 31344b0fdd7cSKalderon, Michal 31354b0fdd7cSKalderon, Michal if (rc) 31364b0fdd7cSKalderon, Michal return rc; 31374b0fdd7cSKalderon, Michal 31384b0fdd7cSKalderon, Michal rc = qed_spq_post(p_hwfn, p_ent, NULL); 31394b0fdd7cSKalderon, Michal 31404b0fdd7cSKalderon, Michal DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc); 31414b0fdd7cSKalderon, Michal 31424b0fdd7cSKalderon, Michal return rc; 31434b0fdd7cSKalderon, Michal } 31444b0fdd7cSKalderon, Michal 314567b40dccSKalderon, Michal void 314667b40dccSKalderon, Michal qed_iwarp_query_qp(struct qed_rdma_qp *qp, 314767b40dccSKalderon, Michal struct qed_rdma_query_qp_out_params *out_params) 314867b40dccSKalderon, Michal { 314967b40dccSKalderon, Michal out_params->state = qed_iwarp2roce_state(qp->iwarp_state); 315067b40dccSKalderon, Michal } 3151