17b36b6e0Skxie@chelsio.com /* 27b36b6e0Skxie@chelsio.com * cxgb4i.c: Chelsio T4 iSCSI driver. 37b36b6e0Skxie@chelsio.com * 41149a5edSKaren Xie * Copyright (c) 2010-2015 Chelsio Communications, Inc. 57b36b6e0Skxie@chelsio.com * 67b36b6e0Skxie@chelsio.com * This program is free software; you can redistribute it and/or modify 77b36b6e0Skxie@chelsio.com * it under the terms of the GNU General Public License as published by 87b36b6e0Skxie@chelsio.com * the Free Software Foundation. 97b36b6e0Skxie@chelsio.com * 107b36b6e0Skxie@chelsio.com * Written by: Karen Xie (kxie@chelsio.com) 117b36b6e0Skxie@chelsio.com * Rakesh Ranjan (rranjan@chelsio.com) 127b36b6e0Skxie@chelsio.com */ 137b36b6e0Skxie@chelsio.com 147b36b6e0Skxie@chelsio.com #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ 157b36b6e0Skxie@chelsio.com 1628466e0fSNicolas Dichtel #include <linux/kernel.h> 177b36b6e0Skxie@chelsio.com #include <linux/module.h> 187b36b6e0Skxie@chelsio.com #include <linux/moduleparam.h> 197b36b6e0Skxie@chelsio.com #include <scsi/scsi_host.h> 207b36b6e0Skxie@chelsio.com #include <net/tcp.h> 217b36b6e0Skxie@chelsio.com #include <net/dst.h> 227b36b6e0Skxie@chelsio.com #include <linux/netdevice.h> 23759a0cc5SAnish Bhatt #include <net/addrconf.h> 247b36b6e0Skxie@chelsio.com 253bd3e8bfSKaren Xie #include "t4_regs.h" 267b36b6e0Skxie@chelsio.com #include "t4_msg.h" 277b36b6e0Skxie@chelsio.com #include "cxgb4.h" 287b36b6e0Skxie@chelsio.com #include "cxgb4_uld.h" 297b36b6e0Skxie@chelsio.com #include "t4fw_api.h" 307b36b6e0Skxie@chelsio.com #include "l2t.h" 317b36b6e0Skxie@chelsio.com #include "cxgb4i.h" 32211a84e3SAnish Bhatt #include "clip_tbl.h" 337b36b6e0Skxie@chelsio.com 347b36b6e0Skxie@chelsio.com static unsigned int dbg_level; 357b36b6e0Skxie@chelsio.com 367b36b6e0Skxie@chelsio.com #include "../libcxgbi.h" 377b36b6e0Skxie@chelsio.com 387b36b6e0Skxie@chelsio.com #define DRV_MODULE_NAME "cxgb4i" 393bd3e8bfSKaren Xie #define DRV_MODULE_DESC "Chelsio T4/T5 iSCSI Driver" 400ea5bf3dSKaren Xie #define DRV_MODULE_VERSION "0.9.5-ko" 410ea5bf3dSKaren Xie #define DRV_MODULE_RELDATE "Apr. 2015" 427b36b6e0Skxie@chelsio.com 437b36b6e0Skxie@chelsio.com static char version[] = 447b36b6e0Skxie@chelsio.com DRV_MODULE_DESC " " DRV_MODULE_NAME 450ea5bf3dSKaren Xie " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; 467b36b6e0Skxie@chelsio.com 477b36b6e0Skxie@chelsio.com MODULE_AUTHOR("Chelsio Communications, Inc."); 487b36b6e0Skxie@chelsio.com MODULE_DESCRIPTION(DRV_MODULE_DESC); 497b36b6e0Skxie@chelsio.com MODULE_VERSION(DRV_MODULE_VERSION); 507b36b6e0Skxie@chelsio.com MODULE_LICENSE("GPL"); 517b36b6e0Skxie@chelsio.com 527b36b6e0Skxie@chelsio.com module_param(dbg_level, uint, 0644); 537b36b6e0Skxie@chelsio.com MODULE_PARM_DESC(dbg_level, "Debug flag (default=0)"); 547b36b6e0Skxie@chelsio.com 5581daf10cSKaren Xie #define CXGB4I_DEFAULT_10G_RCV_WIN (256 * 1024) 5681daf10cSKaren Xie static int cxgb4i_rcv_win = -1; 577b36b6e0Skxie@chelsio.com module_param(cxgb4i_rcv_win, int, 0644); 587b36b6e0Skxie@chelsio.com MODULE_PARM_DESC(cxgb4i_rcv_win, "TCP reveive window in bytes"); 597b36b6e0Skxie@chelsio.com 6081daf10cSKaren Xie #define CXGB4I_DEFAULT_10G_SND_WIN (128 * 1024) 6181daf10cSKaren Xie static int cxgb4i_snd_win = -1; 627b36b6e0Skxie@chelsio.com module_param(cxgb4i_snd_win, int, 0644); 637b36b6e0Skxie@chelsio.com MODULE_PARM_DESC(cxgb4i_snd_win, "TCP send window in bytes"); 647b36b6e0Skxie@chelsio.com 657b36b6e0Skxie@chelsio.com static int cxgb4i_rx_credit_thres = 10 * 1024; 667b36b6e0Skxie@chelsio.com module_param(cxgb4i_rx_credit_thres, int, 0644); 677b36b6e0Skxie@chelsio.com MODULE_PARM_DESC(cxgb4i_rx_credit_thres, 687b36b6e0Skxie@chelsio.com "RX credits return threshold in bytes (default=10KB)"); 697b36b6e0Skxie@chelsio.com 707b36b6e0Skxie@chelsio.com static unsigned int cxgb4i_max_connect = (8 * 1024); 717b36b6e0Skxie@chelsio.com module_param(cxgb4i_max_connect, uint, 0644); 727b36b6e0Skxie@chelsio.com MODULE_PARM_DESC(cxgb4i_max_connect, "Maximum number of connections"); 737b36b6e0Skxie@chelsio.com 747b36b6e0Skxie@chelsio.com static unsigned short cxgb4i_sport_base = 20000; 757b36b6e0Skxie@chelsio.com module_param(cxgb4i_sport_base, ushort, 0644); 767b36b6e0Skxie@chelsio.com MODULE_PARM_DESC(cxgb4i_sport_base, "Starting port number (default 20000)"); 777b36b6e0Skxie@chelsio.com 787b36b6e0Skxie@chelsio.com typedef void (*cxgb4i_cplhandler_func)(struct cxgbi_device *, struct sk_buff *); 797b36b6e0Skxie@chelsio.com 807b36b6e0Skxie@chelsio.com static void *t4_uld_add(const struct cxgb4_lld_info *); 817b36b6e0Skxie@chelsio.com static int t4_uld_rx_handler(void *, const __be64 *, const struct pkt_gl *); 827b36b6e0Skxie@chelsio.com static int t4_uld_state_change(void *, enum cxgb4_state state); 8364bfead8SKaren Xie static inline int send_tx_flowc_wr(struct cxgbi_sock *); 847b36b6e0Skxie@chelsio.com 857b36b6e0Skxie@chelsio.com static const struct cxgb4_uld_info cxgb4i_uld_info = { 867b36b6e0Skxie@chelsio.com .name = DRV_MODULE_NAME, 870fbc81b3SHariprasad Shenai .nrxq = MAX_ULD_QSETS, 88ab677ff4SHariprasad Shenai .ntxq = MAX_ULD_QSETS, 890fbc81b3SHariprasad Shenai .rxq_size = 1024, 900fbc81b3SHariprasad Shenai .lro = false, 917b36b6e0Skxie@chelsio.com .add = t4_uld_add, 927b36b6e0Skxie@chelsio.com .rx_handler = t4_uld_rx_handler, 937b36b6e0Skxie@chelsio.com .state_change = t4_uld_state_change, 947b36b6e0Skxie@chelsio.com }; 957b36b6e0Skxie@chelsio.com 967b36b6e0Skxie@chelsio.com static struct scsi_host_template cxgb4i_host_template = { 977b36b6e0Skxie@chelsio.com .module = THIS_MODULE, 987b36b6e0Skxie@chelsio.com .name = DRV_MODULE_NAME, 997b36b6e0Skxie@chelsio.com .proc_name = DRV_MODULE_NAME, 1007b36b6e0Skxie@chelsio.com .can_queue = CXGB4I_SCSI_HOST_QDEPTH, 1017b36b6e0Skxie@chelsio.com .queuecommand = iscsi_queuecommand, 102db5ed4dfSChristoph Hellwig .change_queue_depth = scsi_change_queue_depth, 1037b36b6e0Skxie@chelsio.com .sg_tablesize = SG_ALL, 1047b36b6e0Skxie@chelsio.com .max_sectors = 0xFFFF, 1057b36b6e0Skxie@chelsio.com .cmd_per_lun = ISCSI_DEF_CMD_PER_LUN, 106b6a05c82SChristoph Hellwig .eh_timed_out = iscsi_eh_cmd_timed_out, 1077b36b6e0Skxie@chelsio.com .eh_abort_handler = iscsi_eh_abort, 1087b36b6e0Skxie@chelsio.com .eh_device_reset_handler = iscsi_eh_device_reset, 1097b36b6e0Skxie@chelsio.com .eh_target_reset_handler = iscsi_eh_recover_target, 1107b36b6e0Skxie@chelsio.com .target_alloc = iscsi_target_alloc, 1117b36b6e0Skxie@chelsio.com .use_clustering = DISABLE_CLUSTERING, 1127b36b6e0Skxie@chelsio.com .this_id = -1, 113c40ecc12SChristoph Hellwig .track_queue_depth = 1, 1147b36b6e0Skxie@chelsio.com }; 1157b36b6e0Skxie@chelsio.com 1167b36b6e0Skxie@chelsio.com static struct iscsi_transport cxgb4i_iscsi_transport = { 1177b36b6e0Skxie@chelsio.com .owner = THIS_MODULE, 1187b36b6e0Skxie@chelsio.com .name = DRV_MODULE_NAME, 1197b36b6e0Skxie@chelsio.com .caps = CAP_RECOVERY_L0 | CAP_MULTI_R2T | CAP_HDRDGST | 1207b36b6e0Skxie@chelsio.com CAP_DATADGST | CAP_DIGEST_OFFLOAD | 121fdafd4dfSMike Christie CAP_PADDING_OFFLOAD | CAP_TEXT_NEGO, 1223128c6c7SMike Christie .attr_is_visible = cxgbi_attr_is_visible, 1237b36b6e0Skxie@chelsio.com .get_host_param = cxgbi_get_host_param, 1247b36b6e0Skxie@chelsio.com .set_host_param = cxgbi_set_host_param, 1257b36b6e0Skxie@chelsio.com /* session management */ 1267b36b6e0Skxie@chelsio.com .create_session = cxgbi_create_session, 1277b36b6e0Skxie@chelsio.com .destroy_session = cxgbi_destroy_session, 1287b36b6e0Skxie@chelsio.com .get_session_param = iscsi_session_get_param, 1297b36b6e0Skxie@chelsio.com /* connection management */ 1307b36b6e0Skxie@chelsio.com .create_conn = cxgbi_create_conn, 1317b36b6e0Skxie@chelsio.com .bind_conn = cxgbi_bind_conn, 1327b36b6e0Skxie@chelsio.com .destroy_conn = iscsi_tcp_conn_teardown, 1337b36b6e0Skxie@chelsio.com .start_conn = iscsi_conn_start, 1347b36b6e0Skxie@chelsio.com .stop_conn = iscsi_conn_stop, 135c71b9b66SMike Christie .get_conn_param = iscsi_conn_get_param, 1367b36b6e0Skxie@chelsio.com .set_param = cxgbi_set_conn_param, 1377b36b6e0Skxie@chelsio.com .get_stats = cxgbi_get_conn_stats, 1387b36b6e0Skxie@chelsio.com /* pdu xmit req from user space */ 1397b36b6e0Skxie@chelsio.com .send_pdu = iscsi_conn_send_pdu, 1407b36b6e0Skxie@chelsio.com /* task */ 1417b36b6e0Skxie@chelsio.com .init_task = iscsi_tcp_task_init, 1427b36b6e0Skxie@chelsio.com .xmit_task = iscsi_tcp_task_xmit, 1437b36b6e0Skxie@chelsio.com .cleanup_task = cxgbi_cleanup_task, 1447b36b6e0Skxie@chelsio.com /* pdu */ 1457b36b6e0Skxie@chelsio.com .alloc_pdu = cxgbi_conn_alloc_pdu, 1467b36b6e0Skxie@chelsio.com .init_pdu = cxgbi_conn_init_pdu, 1477b36b6e0Skxie@chelsio.com .xmit_pdu = cxgbi_conn_xmit_pdu, 1487b36b6e0Skxie@chelsio.com .parse_pdu_itt = cxgbi_parse_pdu_itt, 1497b36b6e0Skxie@chelsio.com /* TCP connect/disconnect */ 150c71b9b66SMike Christie .get_ep_param = cxgbi_get_ep_param, 1517b36b6e0Skxie@chelsio.com .ep_connect = cxgbi_ep_connect, 1527b36b6e0Skxie@chelsio.com .ep_poll = cxgbi_ep_poll, 1537b36b6e0Skxie@chelsio.com .ep_disconnect = cxgbi_ep_disconnect, 1547b36b6e0Skxie@chelsio.com /* Error recovery timeout call */ 1557b36b6e0Skxie@chelsio.com .session_recovery_timedout = iscsi_session_recovery_timedout, 1567b36b6e0Skxie@chelsio.com }; 1577b36b6e0Skxie@chelsio.com 1587b36b6e0Skxie@chelsio.com static struct scsi_transport_template *cxgb4i_stt; 1597b36b6e0Skxie@chelsio.com 1607b36b6e0Skxie@chelsio.com /* 1617b36b6e0Skxie@chelsio.com * CPL (Chelsio Protocol Language) defines a message passing interface between 1627b36b6e0Skxie@chelsio.com * the host driver and Chelsio asic. 1637b36b6e0Skxie@chelsio.com * The section below implments CPLs that related to iscsi tcp connection 1647b36b6e0Skxie@chelsio.com * open/close/abort and data send/receive. 1657b36b6e0Skxie@chelsio.com */ 166759a0cc5SAnish Bhatt 1677b36b6e0Skxie@chelsio.com #define RCV_BUFSIZ_MASK 0x3FFU 168d3074cceSKaren Xie #define MAX_IMM_TX_PKT_LEN 256 1697b36b6e0Skxie@chelsio.com 1707b36b6e0Skxie@chelsio.com static int push_tx_frames(struct cxgbi_sock *, int); 1717b36b6e0Skxie@chelsio.com 1727b36b6e0Skxie@chelsio.com /* 1737b36b6e0Skxie@chelsio.com * is_ofld_imm - check whether a packet can be sent as immediate data 1747b36b6e0Skxie@chelsio.com * @skb: the packet 1757b36b6e0Skxie@chelsio.com * 1767b36b6e0Skxie@chelsio.com * Returns true if a packet can be sent as an offload WR with immediate 1777b36b6e0Skxie@chelsio.com * data. We currently use the same limit as for Ethernet packets. 1787b36b6e0Skxie@chelsio.com */ 17984944d8cSKaren Xie static inline bool is_ofld_imm(const struct sk_buff *skb) 1807b36b6e0Skxie@chelsio.com { 18184944d8cSKaren Xie int len = skb->len; 18284944d8cSKaren Xie 18384944d8cSKaren Xie if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) 18484944d8cSKaren Xie len += sizeof(struct fw_ofld_tx_data_wr); 18584944d8cSKaren Xie 18684944d8cSKaren Xie return len <= MAX_IMM_TX_PKT_LEN; 1877b36b6e0Skxie@chelsio.com } 1887b36b6e0Skxie@chelsio.com 1897b36b6e0Skxie@chelsio.com static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb, 1907b36b6e0Skxie@chelsio.com struct l2t_entry *e) 1917b36b6e0Skxie@chelsio.com { 1923bd3e8bfSKaren Xie struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); 1937b36b6e0Skxie@chelsio.com int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); 1947b36b6e0Skxie@chelsio.com unsigned long long opt0; 1957b36b6e0Skxie@chelsio.com unsigned int opt2; 1967b36b6e0Skxie@chelsio.com unsigned int qid_atid = ((unsigned int)csk->atid) | 1977b36b6e0Skxie@chelsio.com (((unsigned int)csk->rss_qid) << 14); 1987b36b6e0Skxie@chelsio.com 199d7990b0cSAnish Bhatt opt0 = KEEP_ALIVE_F | 200d7990b0cSAnish Bhatt WND_SCALE_V(wscale) | 201d7990b0cSAnish Bhatt MSS_IDX_V(csk->mss_idx) | 202d7990b0cSAnish Bhatt L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | 203d7990b0cSAnish Bhatt TX_CHAN_V(csk->tx_chan) | 204d7990b0cSAnish Bhatt SMAC_SEL_V(csk->smac_idx) | 205d7990b0cSAnish Bhatt ULP_MODE_V(ULP_MODE_ISCSI) | 20681daf10cSKaren Xie RCV_BUFSIZ_V(csk->rcv_win >> 10); 2071eb88a5dSKaren Xie 208d7990b0cSAnish Bhatt opt2 = RX_CHANNEL_V(0) | 209d7990b0cSAnish Bhatt RSS_QUEUE_VALID_F | 210d7990b0cSAnish Bhatt RSS_QUEUE_V(csk->rss_qid); 2117b36b6e0Skxie@chelsio.com 2123bd3e8bfSKaren Xie if (is_t4(lldi->adapter_type)) { 2133bd3e8bfSKaren Xie struct cpl_act_open_req *req = 2143bd3e8bfSKaren Xie (struct cpl_act_open_req *)skb->head; 2153bd3e8bfSKaren Xie 2167b36b6e0Skxie@chelsio.com INIT_TP_WR(req, 0); 2177b36b6e0Skxie@chelsio.com OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, 2187b36b6e0Skxie@chelsio.com qid_atid)); 2197b36b6e0Skxie@chelsio.com req->local_port = csk->saddr.sin_port; 2207b36b6e0Skxie@chelsio.com req->peer_port = csk->daddr.sin_port; 2217b36b6e0Skxie@chelsio.com req->local_ip = csk->saddr.sin_addr.s_addr; 2227b36b6e0Skxie@chelsio.com req->peer_ip = csk->daddr.sin_addr.s_addr; 2237b36b6e0Skxie@chelsio.com req->opt0 = cpu_to_be64(opt0); 224ac0245ffSKaren Xie req->params = cpu_to_be32(cxgb4_select_ntuple( 225ac0245ffSKaren Xie csk->cdev->ports[csk->port_id], 226ac0245ffSKaren Xie csk->l2t)); 227d7990b0cSAnish Bhatt opt2 |= RX_FC_VALID_F; 2287b36b6e0Skxie@chelsio.com req->opt2 = cpu_to_be32(opt2); 2297b36b6e0Skxie@chelsio.com 2307b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 2313bd3e8bfSKaren Xie "csk t4 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", 2327b36b6e0Skxie@chelsio.com csk, &req->local_ip, ntohs(req->local_port), 2337b36b6e0Skxie@chelsio.com &req->peer_ip, ntohs(req->peer_port), 2347b36b6e0Skxie@chelsio.com csk->atid, csk->rss_qid); 235586be7cbSVarun Prakash } else if (is_t5(lldi->adapter_type)) { 2363bd3e8bfSKaren Xie struct cpl_t5_act_open_req *req = 2373bd3e8bfSKaren Xie (struct cpl_t5_act_open_req *)skb->head; 2381eb88a5dSKaren Xie u32 isn = (prandom_u32() & ~7UL) - 1; 2397b36b6e0Skxie@chelsio.com 2403bd3e8bfSKaren Xie INIT_TP_WR(req, 0); 2413bd3e8bfSKaren Xie OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, 2423bd3e8bfSKaren Xie qid_atid)); 2433bd3e8bfSKaren Xie req->local_port = csk->saddr.sin_port; 2443bd3e8bfSKaren Xie req->peer_port = csk->daddr.sin_port; 2453bd3e8bfSKaren Xie req->local_ip = csk->saddr.sin_addr.s_addr; 2463bd3e8bfSKaren Xie req->peer_ip = csk->daddr.sin_addr.s_addr; 2473bd3e8bfSKaren Xie req->opt0 = cpu_to_be64(opt0); 248d7990b0cSAnish Bhatt req->params = cpu_to_be64(FILTER_TUPLE_V( 249ac0245ffSKaren Xie cxgb4_select_ntuple( 250ac0245ffSKaren Xie csk->cdev->ports[csk->port_id], 251ac0245ffSKaren Xie csk->l2t))); 2521eb88a5dSKaren Xie req->rsvd = cpu_to_be32(isn); 2531eb88a5dSKaren Xie opt2 |= T5_ISS_VALID; 2541eb88a5dSKaren Xie opt2 |= T5_OPT_2_VALID_F; 2551eb88a5dSKaren Xie 2563bd3e8bfSKaren Xie req->opt2 = cpu_to_be32(opt2); 2573bd3e8bfSKaren Xie 2583bd3e8bfSKaren Xie log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 2593bd3e8bfSKaren Xie "csk t5 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", 2603bd3e8bfSKaren Xie csk, &req->local_ip, ntohs(req->local_port), 2613bd3e8bfSKaren Xie &req->peer_ip, ntohs(req->peer_port), 2623bd3e8bfSKaren Xie csk->atid, csk->rss_qid); 263586be7cbSVarun Prakash } else { 264586be7cbSVarun Prakash struct cpl_t6_act_open_req *req = 265586be7cbSVarun Prakash (struct cpl_t6_act_open_req *)skb->head; 266586be7cbSVarun Prakash u32 isn = (prandom_u32() & ~7UL) - 1; 267586be7cbSVarun Prakash 268586be7cbSVarun Prakash INIT_TP_WR(req, 0); 269586be7cbSVarun Prakash OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, 270586be7cbSVarun Prakash qid_atid)); 271586be7cbSVarun Prakash req->local_port = csk->saddr.sin_port; 272586be7cbSVarun Prakash req->peer_port = csk->daddr.sin_port; 273586be7cbSVarun Prakash req->local_ip = csk->saddr.sin_addr.s_addr; 274586be7cbSVarun Prakash req->peer_ip = csk->daddr.sin_addr.s_addr; 275586be7cbSVarun Prakash req->opt0 = cpu_to_be64(opt0); 276586be7cbSVarun Prakash req->params = cpu_to_be64(FILTER_TUPLE_V( 277586be7cbSVarun Prakash cxgb4_select_ntuple( 278586be7cbSVarun Prakash csk->cdev->ports[csk->port_id], 279586be7cbSVarun Prakash csk->l2t))); 280586be7cbSVarun Prakash req->rsvd = cpu_to_be32(isn); 281586be7cbSVarun Prakash 282586be7cbSVarun Prakash opt2 |= T5_ISS_VALID; 283586be7cbSVarun Prakash opt2 |= RX_FC_DISABLE_F; 284586be7cbSVarun Prakash opt2 |= T5_OPT_2_VALID_F; 285586be7cbSVarun Prakash 286586be7cbSVarun Prakash req->opt2 = cpu_to_be32(opt2); 287586be7cbSVarun Prakash req->rsvd2 = cpu_to_be32(0); 288586be7cbSVarun Prakash req->opt3 = cpu_to_be32(0); 289586be7cbSVarun Prakash 290586be7cbSVarun Prakash log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 291586be7cbSVarun Prakash "csk t6 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n", 292586be7cbSVarun Prakash csk, &req->local_ip, ntohs(req->local_port), 293586be7cbSVarun Prakash &req->peer_ip, ntohs(req->peer_port), 294586be7cbSVarun Prakash csk->atid, csk->rss_qid); 2953bd3e8bfSKaren Xie } 2963bd3e8bfSKaren Xie 2973bd3e8bfSKaren Xie set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); 298759a0cc5SAnish Bhatt 299759a0cc5SAnish Bhatt pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n", 300586be7cbSVarun Prakash (&csk->saddr), (&csk->daddr), 301586be7cbSVarun Prakash CHELSIO_CHIP_VERSION(lldi->adapter_type), csk, 302759a0cc5SAnish Bhatt csk->state, csk->flags, csk->atid, csk->rss_qid); 303759a0cc5SAnish Bhatt 304759a0cc5SAnish Bhatt cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); 305759a0cc5SAnish Bhatt } 306759a0cc5SAnish Bhatt 307f42bb57cSAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 308759a0cc5SAnish Bhatt static void send_act_open_req6(struct cxgbi_sock *csk, struct sk_buff *skb, 309759a0cc5SAnish Bhatt struct l2t_entry *e) 310759a0cc5SAnish Bhatt { 311759a0cc5SAnish Bhatt struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); 312759a0cc5SAnish Bhatt int wscale = cxgbi_sock_compute_wscale(csk->mss_idx); 313759a0cc5SAnish Bhatt unsigned long long opt0; 314759a0cc5SAnish Bhatt unsigned int opt2; 315759a0cc5SAnish Bhatt unsigned int qid_atid = ((unsigned int)csk->atid) | 316759a0cc5SAnish Bhatt (((unsigned int)csk->rss_qid) << 14); 317759a0cc5SAnish Bhatt 318d7990b0cSAnish Bhatt opt0 = KEEP_ALIVE_F | 319d7990b0cSAnish Bhatt WND_SCALE_V(wscale) | 320d7990b0cSAnish Bhatt MSS_IDX_V(csk->mss_idx) | 321d7990b0cSAnish Bhatt L2T_IDX_V(((struct l2t_entry *)csk->l2t)->idx) | 322d7990b0cSAnish Bhatt TX_CHAN_V(csk->tx_chan) | 323d7990b0cSAnish Bhatt SMAC_SEL_V(csk->smac_idx) | 324d7990b0cSAnish Bhatt ULP_MODE_V(ULP_MODE_ISCSI) | 32581daf10cSKaren Xie RCV_BUFSIZ_V(csk->rcv_win >> 10); 326759a0cc5SAnish Bhatt 327d7990b0cSAnish Bhatt opt2 = RX_CHANNEL_V(0) | 328d7990b0cSAnish Bhatt RSS_QUEUE_VALID_F | 329d7990b0cSAnish Bhatt RSS_QUEUE_V(csk->rss_qid); 330759a0cc5SAnish Bhatt 331586be7cbSVarun Prakash if (is_t4(lldi->adapter_type)) { 332759a0cc5SAnish Bhatt struct cpl_act_open_req6 *req = 333759a0cc5SAnish Bhatt (struct cpl_act_open_req6 *)skb->head; 334759a0cc5SAnish Bhatt 335759a0cc5SAnish Bhatt INIT_TP_WR(req, 0); 336759a0cc5SAnish Bhatt OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, 337759a0cc5SAnish Bhatt qid_atid)); 338759a0cc5SAnish Bhatt req->local_port = csk->saddr6.sin6_port; 339759a0cc5SAnish Bhatt req->peer_port = csk->daddr6.sin6_port; 340759a0cc5SAnish Bhatt 341759a0cc5SAnish Bhatt req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); 342759a0cc5SAnish Bhatt req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + 343759a0cc5SAnish Bhatt 8); 344759a0cc5SAnish Bhatt req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); 345759a0cc5SAnish Bhatt req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + 346759a0cc5SAnish Bhatt 8); 347759a0cc5SAnish Bhatt 348759a0cc5SAnish Bhatt req->opt0 = cpu_to_be64(opt0); 349759a0cc5SAnish Bhatt 350d7990b0cSAnish Bhatt opt2 |= RX_FC_VALID_F; 351759a0cc5SAnish Bhatt req->opt2 = cpu_to_be32(opt2); 352759a0cc5SAnish Bhatt 353759a0cc5SAnish Bhatt req->params = cpu_to_be32(cxgb4_select_ntuple( 354759a0cc5SAnish Bhatt csk->cdev->ports[csk->port_id], 355759a0cc5SAnish Bhatt csk->l2t)); 356586be7cbSVarun Prakash } else if (is_t5(lldi->adapter_type)) { 357759a0cc5SAnish Bhatt struct cpl_t5_act_open_req6 *req = 358759a0cc5SAnish Bhatt (struct cpl_t5_act_open_req6 *)skb->head; 359759a0cc5SAnish Bhatt 360759a0cc5SAnish Bhatt INIT_TP_WR(req, 0); 361759a0cc5SAnish Bhatt OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, 362759a0cc5SAnish Bhatt qid_atid)); 363759a0cc5SAnish Bhatt req->local_port = csk->saddr6.sin6_port; 364759a0cc5SAnish Bhatt req->peer_port = csk->daddr6.sin6_port; 365759a0cc5SAnish Bhatt req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); 366759a0cc5SAnish Bhatt req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + 367759a0cc5SAnish Bhatt 8); 368759a0cc5SAnish Bhatt req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); 369759a0cc5SAnish Bhatt req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + 370759a0cc5SAnish Bhatt 8); 371759a0cc5SAnish Bhatt req->opt0 = cpu_to_be64(opt0); 372759a0cc5SAnish Bhatt 373d7990b0cSAnish Bhatt opt2 |= T5_OPT_2_VALID_F; 374759a0cc5SAnish Bhatt req->opt2 = cpu_to_be32(opt2); 375759a0cc5SAnish Bhatt 376d7990b0cSAnish Bhatt req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple( 377759a0cc5SAnish Bhatt csk->cdev->ports[csk->port_id], 378759a0cc5SAnish Bhatt csk->l2t))); 379586be7cbSVarun Prakash } else { 380586be7cbSVarun Prakash struct cpl_t6_act_open_req6 *req = 381586be7cbSVarun Prakash (struct cpl_t6_act_open_req6 *)skb->head; 382586be7cbSVarun Prakash 383586be7cbSVarun Prakash INIT_TP_WR(req, 0); 384586be7cbSVarun Prakash OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, 385586be7cbSVarun Prakash qid_atid)); 386586be7cbSVarun Prakash req->local_port = csk->saddr6.sin6_port; 387586be7cbSVarun Prakash req->peer_port = csk->daddr6.sin6_port; 388586be7cbSVarun Prakash req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr); 389586be7cbSVarun Prakash req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr + 390586be7cbSVarun Prakash 8); 391586be7cbSVarun Prakash req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr); 392586be7cbSVarun Prakash req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr + 393586be7cbSVarun Prakash 8); 394586be7cbSVarun Prakash req->opt0 = cpu_to_be64(opt0); 395586be7cbSVarun Prakash 396586be7cbSVarun Prakash opt2 |= RX_FC_DISABLE_F; 397586be7cbSVarun Prakash opt2 |= T5_OPT_2_VALID_F; 398586be7cbSVarun Prakash 399586be7cbSVarun Prakash req->opt2 = cpu_to_be32(opt2); 400586be7cbSVarun Prakash 401586be7cbSVarun Prakash req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple( 402586be7cbSVarun Prakash csk->cdev->ports[csk->port_id], 403586be7cbSVarun Prakash csk->l2t))); 404586be7cbSVarun Prakash 405586be7cbSVarun Prakash req->rsvd2 = cpu_to_be32(0); 406586be7cbSVarun Prakash req->opt3 = cpu_to_be32(0); 407759a0cc5SAnish Bhatt } 408759a0cc5SAnish Bhatt 409759a0cc5SAnish Bhatt set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); 410759a0cc5SAnish Bhatt 411759a0cc5SAnish Bhatt pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n", 412586be7cbSVarun Prakash CHELSIO_CHIP_VERSION(lldi->adapter_type), csk, csk->state, 413586be7cbSVarun Prakash csk->flags, csk->atid, 414759a0cc5SAnish Bhatt &csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port), 415759a0cc5SAnish Bhatt &csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port), 416759a0cc5SAnish Bhatt csk->rss_qid); 417759a0cc5SAnish Bhatt 4187b36b6e0Skxie@chelsio.com cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); 4197b36b6e0Skxie@chelsio.com } 420f42bb57cSAnish Bhatt #endif 4217b36b6e0Skxie@chelsio.com 4227b36b6e0Skxie@chelsio.com static void send_close_req(struct cxgbi_sock *csk) 4237b36b6e0Skxie@chelsio.com { 4247b36b6e0Skxie@chelsio.com struct sk_buff *skb = csk->cpl_close; 4257b36b6e0Skxie@chelsio.com struct cpl_close_con_req *req = (struct cpl_close_con_req *)skb->head; 4267b36b6e0Skxie@chelsio.com unsigned int tid = csk->tid; 4277b36b6e0Skxie@chelsio.com 4287b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 4297b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx, tid %u.\n", 4307b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 4317b36b6e0Skxie@chelsio.com csk->cpl_close = NULL; 4327b36b6e0Skxie@chelsio.com set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); 4337b36b6e0Skxie@chelsio.com INIT_TP_WR(req, tid); 4347b36b6e0Skxie@chelsio.com OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); 4357b36b6e0Skxie@chelsio.com req->rsvd = 0; 4367b36b6e0Skxie@chelsio.com 4377b36b6e0Skxie@chelsio.com cxgbi_sock_skb_entail(csk, skb); 4387b36b6e0Skxie@chelsio.com if (csk->state >= CTP_ESTABLISHED) 4397b36b6e0Skxie@chelsio.com push_tx_frames(csk, 1); 4407b36b6e0Skxie@chelsio.com } 4417b36b6e0Skxie@chelsio.com 4427b36b6e0Skxie@chelsio.com static void abort_arp_failure(void *handle, struct sk_buff *skb) 4437b36b6e0Skxie@chelsio.com { 4447b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk = (struct cxgbi_sock *)handle; 4457b36b6e0Skxie@chelsio.com struct cpl_abort_req *req; 4467b36b6e0Skxie@chelsio.com 4477b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 4487b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx, tid %u, abort.\n", 4497b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 4507b36b6e0Skxie@chelsio.com req = (struct cpl_abort_req *)skb->data; 4517b36b6e0Skxie@chelsio.com req->cmd = CPL_ABORT_NO_RST; 4527b36b6e0Skxie@chelsio.com cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); 4537b36b6e0Skxie@chelsio.com } 4547b36b6e0Skxie@chelsio.com 4557b36b6e0Skxie@chelsio.com static void send_abort_req(struct cxgbi_sock *csk) 4567b36b6e0Skxie@chelsio.com { 4577b36b6e0Skxie@chelsio.com struct cpl_abort_req *req; 4587b36b6e0Skxie@chelsio.com struct sk_buff *skb = csk->cpl_abort_req; 4597b36b6e0Skxie@chelsio.com 4607b36b6e0Skxie@chelsio.com if (unlikely(csk->state == CTP_ABORTING) || !skb || !csk->cdev) 4617b36b6e0Skxie@chelsio.com return; 46264bfead8SKaren Xie 46364bfead8SKaren Xie if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { 46464bfead8SKaren Xie send_tx_flowc_wr(csk); 46564bfead8SKaren Xie cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); 46664bfead8SKaren Xie } 46764bfead8SKaren Xie 4687b36b6e0Skxie@chelsio.com cxgbi_sock_set_state(csk, CTP_ABORTING); 4697b36b6e0Skxie@chelsio.com cxgbi_sock_set_flag(csk, CTPF_ABORT_RPL_PENDING); 4707b36b6e0Skxie@chelsio.com cxgbi_sock_purge_write_queue(csk); 4717b36b6e0Skxie@chelsio.com 4727b36b6e0Skxie@chelsio.com csk->cpl_abort_req = NULL; 4737b36b6e0Skxie@chelsio.com req = (struct cpl_abort_req *)skb->head; 4742126bc5eSKaren Xie set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); 4757b36b6e0Skxie@chelsio.com req->cmd = CPL_ABORT_SEND_RST; 4767b36b6e0Skxie@chelsio.com t4_set_arp_err_handler(skb, csk, abort_arp_failure); 4777b36b6e0Skxie@chelsio.com INIT_TP_WR(req, csk->tid); 4787b36b6e0Skxie@chelsio.com OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, csk->tid)); 4797b36b6e0Skxie@chelsio.com req->rsvd0 = htonl(csk->snd_nxt); 4807b36b6e0Skxie@chelsio.com req->rsvd1 = !cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT); 4817b36b6e0Skxie@chelsio.com 4827b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 4837b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, snd_nxt %u, 0x%x.\n", 4847b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, csk->snd_nxt, 4857b36b6e0Skxie@chelsio.com req->rsvd1); 4867b36b6e0Skxie@chelsio.com 4877b36b6e0Skxie@chelsio.com cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); 4887b36b6e0Skxie@chelsio.com } 4897b36b6e0Skxie@chelsio.com 4907b36b6e0Skxie@chelsio.com static void send_abort_rpl(struct cxgbi_sock *csk, int rst_status) 4917b36b6e0Skxie@chelsio.com { 4927b36b6e0Skxie@chelsio.com struct sk_buff *skb = csk->cpl_abort_rpl; 4937b36b6e0Skxie@chelsio.com struct cpl_abort_rpl *rpl = (struct cpl_abort_rpl *)skb->head; 4947b36b6e0Skxie@chelsio.com 4957b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 4967b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, status %d.\n", 4977b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, rst_status); 4987b36b6e0Skxie@chelsio.com 4997b36b6e0Skxie@chelsio.com csk->cpl_abort_rpl = NULL; 5002126bc5eSKaren Xie set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); 5017b36b6e0Skxie@chelsio.com INIT_TP_WR(rpl, csk->tid); 5027b36b6e0Skxie@chelsio.com OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, csk->tid)); 5037b36b6e0Skxie@chelsio.com rpl->cmd = rst_status; 5047b36b6e0Skxie@chelsio.com cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); 5057b36b6e0Skxie@chelsio.com } 5067b36b6e0Skxie@chelsio.com 5077b36b6e0Skxie@chelsio.com /* 5087b36b6e0Skxie@chelsio.com * CPL connection rx data ack: host -> 5097b36b6e0Skxie@chelsio.com * Send RX credits through an RX_DATA_ACK CPL message. Returns the number of 5107b36b6e0Skxie@chelsio.com * credits sent. 5117b36b6e0Skxie@chelsio.com */ 5127b36b6e0Skxie@chelsio.com static u32 send_rx_credits(struct cxgbi_sock *csk, u32 credits) 5137b36b6e0Skxie@chelsio.com { 5147b36b6e0Skxie@chelsio.com struct sk_buff *skb; 5157b36b6e0Skxie@chelsio.com struct cpl_rx_data_ack *req; 5167b36b6e0Skxie@chelsio.com 5177b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 5187b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, credit %u.\n", 5197b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, credits); 5207b36b6e0Skxie@chelsio.com 52124d3f95aSkxie@chelsio.com skb = alloc_wr(sizeof(*req), 0, GFP_ATOMIC); 5227b36b6e0Skxie@chelsio.com if (!skb) { 5237b36b6e0Skxie@chelsio.com pr_info("csk 0x%p, credit %u, OOM.\n", csk, credits); 5247b36b6e0Skxie@chelsio.com return 0; 5257b36b6e0Skxie@chelsio.com } 5267b36b6e0Skxie@chelsio.com req = (struct cpl_rx_data_ack *)skb->head; 5277b36b6e0Skxie@chelsio.com 5287b36b6e0Skxie@chelsio.com set_wr_txq(skb, CPL_PRIORITY_ACK, csk->port_id); 5297b36b6e0Skxie@chelsio.com INIT_TP_WR(req, csk->tid); 5307b36b6e0Skxie@chelsio.com OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, 5317b36b6e0Skxie@chelsio.com csk->tid)); 532d7990b0cSAnish Bhatt req->credit_dack = cpu_to_be32(RX_CREDITS_V(credits) 533d7990b0cSAnish Bhatt | RX_FORCE_ACK_F); 5347b36b6e0Skxie@chelsio.com cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); 5357b36b6e0Skxie@chelsio.com return credits; 5367b36b6e0Skxie@chelsio.com } 5377b36b6e0Skxie@chelsio.com 5387b36b6e0Skxie@chelsio.com /* 5397b36b6e0Skxie@chelsio.com * sgl_len - calculates the size of an SGL of the given capacity 5407b36b6e0Skxie@chelsio.com * @n: the number of SGL entries 5417b36b6e0Skxie@chelsio.com * Calculates the number of flits needed for a scatter/gather list that 5427b36b6e0Skxie@chelsio.com * can hold the given number of entries. 5437b36b6e0Skxie@chelsio.com */ 5447b36b6e0Skxie@chelsio.com static inline unsigned int sgl_len(unsigned int n) 5457b36b6e0Skxie@chelsio.com { 5467b36b6e0Skxie@chelsio.com n--; 5477b36b6e0Skxie@chelsio.com return (3 * n) / 2 + (n & 1) + 2; 5487b36b6e0Skxie@chelsio.com } 5497b36b6e0Skxie@chelsio.com 5507b36b6e0Skxie@chelsio.com /* 5517b36b6e0Skxie@chelsio.com * calc_tx_flits_ofld - calculate # of flits for an offload packet 5527b36b6e0Skxie@chelsio.com * @skb: the packet 5537b36b6e0Skxie@chelsio.com * 5547b36b6e0Skxie@chelsio.com * Returns the number of flits needed for the given offload packet. 5557b36b6e0Skxie@chelsio.com * These packets are already fully constructed and no additional headers 5567b36b6e0Skxie@chelsio.com * will be added. 5577b36b6e0Skxie@chelsio.com */ 5587b36b6e0Skxie@chelsio.com static inline unsigned int calc_tx_flits_ofld(const struct sk_buff *skb) 5597b36b6e0Skxie@chelsio.com { 5607b36b6e0Skxie@chelsio.com unsigned int flits, cnt; 5617b36b6e0Skxie@chelsio.com 5627b36b6e0Skxie@chelsio.com if (is_ofld_imm(skb)) 5637b36b6e0Skxie@chelsio.com return DIV_ROUND_UP(skb->len, 8); 5647b36b6e0Skxie@chelsio.com flits = skb_transport_offset(skb) / 8; 5657b36b6e0Skxie@chelsio.com cnt = skb_shinfo(skb)->nr_frags; 566499e2e6fSIsaku Yamahata if (skb_tail_pointer(skb) != skb_transport_header(skb)) 5677b36b6e0Skxie@chelsio.com cnt++; 5687b36b6e0Skxie@chelsio.com return flits + sgl_len(cnt); 5697b36b6e0Skxie@chelsio.com } 5707b36b6e0Skxie@chelsio.com 57164bfead8SKaren Xie #define FLOWC_WR_NPARAMS_MIN 9 57264bfead8SKaren Xie static inline int tx_flowc_wr_credits(int *nparamsp, int *flowclenp) 57364bfead8SKaren Xie { 57464bfead8SKaren Xie int nparams, flowclen16, flowclen; 57564bfead8SKaren Xie 57664bfead8SKaren Xie nparams = FLOWC_WR_NPARAMS_MIN; 57764bfead8SKaren Xie flowclen = offsetof(struct fw_flowc_wr, mnemval[nparams]); 57864bfead8SKaren Xie flowclen16 = DIV_ROUND_UP(flowclen, 16); 57964bfead8SKaren Xie flowclen = flowclen16 * 16; 58064bfead8SKaren Xie /* 58164bfead8SKaren Xie * Return the number of 16-byte credits used by the FlowC request. 58264bfead8SKaren Xie * Pass back the nparams and actual FlowC length if requested. 58364bfead8SKaren Xie */ 58464bfead8SKaren Xie if (nparamsp) 58564bfead8SKaren Xie *nparamsp = nparams; 58664bfead8SKaren Xie if (flowclenp) 58764bfead8SKaren Xie *flowclenp = flowclen; 58864bfead8SKaren Xie 58964bfead8SKaren Xie return flowclen16; 59064bfead8SKaren Xie } 59164bfead8SKaren Xie 59264bfead8SKaren Xie static inline int send_tx_flowc_wr(struct cxgbi_sock *csk) 5937b36b6e0Skxie@chelsio.com { 5947b36b6e0Skxie@chelsio.com struct sk_buff *skb; 5957b36b6e0Skxie@chelsio.com struct fw_flowc_wr *flowc; 59664bfead8SKaren Xie int nparams, flowclen16, flowclen; 5977b36b6e0Skxie@chelsio.com 59864bfead8SKaren Xie flowclen16 = tx_flowc_wr_credits(&nparams, &flowclen); 59924d3f95aSkxie@chelsio.com skb = alloc_wr(flowclen, 0, GFP_ATOMIC); 6007b36b6e0Skxie@chelsio.com flowc = (struct fw_flowc_wr *)skb->head; 6017b36b6e0Skxie@chelsio.com flowc->op_to_nparams = 60264bfead8SKaren Xie htonl(FW_WR_OP_V(FW_FLOWC_WR) | FW_FLOWC_WR_NPARAMS_V(nparams)); 6037b36b6e0Skxie@chelsio.com flowc->flowid_len16 = 60464bfead8SKaren Xie htonl(FW_WR_LEN16_V(flowclen16) | FW_WR_FLOWID_V(csk->tid)); 6057b36b6e0Skxie@chelsio.com flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; 606e27d6169Skxie@chelsio.com flowc->mnemval[0].val = htonl(csk->cdev->pfvf); 6077b36b6e0Skxie@chelsio.com flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; 6087b36b6e0Skxie@chelsio.com flowc->mnemval[1].val = htonl(csk->tx_chan); 6097b36b6e0Skxie@chelsio.com flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; 6107b36b6e0Skxie@chelsio.com flowc->mnemval[2].val = htonl(csk->tx_chan); 6117b36b6e0Skxie@chelsio.com flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; 6127b36b6e0Skxie@chelsio.com flowc->mnemval[3].val = htonl(csk->rss_qid); 6137b36b6e0Skxie@chelsio.com flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; 6147b36b6e0Skxie@chelsio.com flowc->mnemval[4].val = htonl(csk->snd_nxt); 6157b36b6e0Skxie@chelsio.com flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; 6167b36b6e0Skxie@chelsio.com flowc->mnemval[5].val = htonl(csk->rcv_nxt); 6177b36b6e0Skxie@chelsio.com flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; 61881daf10cSKaren Xie flowc->mnemval[6].val = htonl(csk->snd_win); 6197b36b6e0Skxie@chelsio.com flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; 6207b36b6e0Skxie@chelsio.com flowc->mnemval[7].val = htonl(csk->advmss); 6217b36b6e0Skxie@chelsio.com flowc->mnemval[8].mnemonic = 0; 6227b36b6e0Skxie@chelsio.com flowc->mnemval[8].val = 0; 62364bfead8SKaren Xie flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_TXDATAPLEN_MAX; 62464bfead8SKaren Xie flowc->mnemval[8].val = 16384; 62564bfead8SKaren Xie 6262126bc5eSKaren Xie set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); 6277b36b6e0Skxie@chelsio.com 6287b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 6297b36b6e0Skxie@chelsio.com "csk 0x%p, tid 0x%x, %u,%u,%u,%u,%u,%u,%u.\n", 6307b36b6e0Skxie@chelsio.com csk, csk->tid, 0, csk->tx_chan, csk->rss_qid, 63181daf10cSKaren Xie csk->snd_nxt, csk->rcv_nxt, csk->snd_win, 6327b36b6e0Skxie@chelsio.com csk->advmss); 6337b36b6e0Skxie@chelsio.com 6347b36b6e0Skxie@chelsio.com cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); 63564bfead8SKaren Xie 63664bfead8SKaren Xie return flowclen16; 6377b36b6e0Skxie@chelsio.com } 6387b36b6e0Skxie@chelsio.com 6397b36b6e0Skxie@chelsio.com static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb, 6407b36b6e0Skxie@chelsio.com int dlen, int len, u32 credits, int compl) 6417b36b6e0Skxie@chelsio.com { 6427b36b6e0Skxie@chelsio.com struct fw_ofld_tx_data_wr *req; 6437b36b6e0Skxie@chelsio.com unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3; 644e2ac9628SHariprasad Shenai unsigned int wr_ulp_mode = 0, val; 6457857c62aSKaren Xie bool imm = is_ofld_imm(skb); 6467b36b6e0Skxie@chelsio.com 6477b36b6e0Skxie@chelsio.com req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req)); 6487b36b6e0Skxie@chelsio.com 6497857c62aSKaren Xie if (imm) { 650e2ac9628SHariprasad Shenai req->op_to_immdlen = htonl(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | 651e2ac9628SHariprasad Shenai FW_WR_COMPL_F | 652e2ac9628SHariprasad Shenai FW_WR_IMMDLEN_V(dlen)); 653e2ac9628SHariprasad Shenai req->flowid_len16 = htonl(FW_WR_FLOWID_V(csk->tid) | 654e2ac9628SHariprasad Shenai FW_WR_LEN16_V(credits)); 6557b36b6e0Skxie@chelsio.com } else { 6567b36b6e0Skxie@chelsio.com req->op_to_immdlen = 657e2ac9628SHariprasad Shenai cpu_to_be32(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | 658e2ac9628SHariprasad Shenai FW_WR_COMPL_F | 659e2ac9628SHariprasad Shenai FW_WR_IMMDLEN_V(0)); 6607b36b6e0Skxie@chelsio.com req->flowid_len16 = 661e2ac9628SHariprasad Shenai cpu_to_be32(FW_WR_FLOWID_V(csk->tid) | 662e2ac9628SHariprasad Shenai FW_WR_LEN16_V(credits)); 6637b36b6e0Skxie@chelsio.com } 6647b36b6e0Skxie@chelsio.com if (submode) 665e2ac9628SHariprasad Shenai wr_ulp_mode = FW_OFLD_TX_DATA_WR_ULPMODE_V(ULP2_MODE_ISCSI) | 666e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_ULPSUBMODE_V(submode); 667e2ac9628SHariprasad Shenai val = skb_peek(&csk->write_queue) ? 0 : 1; 6686aca4112SKaren Xie req->tunnel_to_proxy = htonl(wr_ulp_mode | 669e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_SHOVE_V(val)); 6707b36b6e0Skxie@chelsio.com req->plen = htonl(len); 6717b36b6e0Skxie@chelsio.com if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) 6727b36b6e0Skxie@chelsio.com cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); 6737b36b6e0Skxie@chelsio.com } 6747b36b6e0Skxie@chelsio.com 6757b36b6e0Skxie@chelsio.com static void arp_failure_skb_discard(void *handle, struct sk_buff *skb) 6767b36b6e0Skxie@chelsio.com { 6777b36b6e0Skxie@chelsio.com kfree_skb(skb); 6787b36b6e0Skxie@chelsio.com } 6797b36b6e0Skxie@chelsio.com 6807b36b6e0Skxie@chelsio.com static int push_tx_frames(struct cxgbi_sock *csk, int req_completion) 6817b36b6e0Skxie@chelsio.com { 6827b36b6e0Skxie@chelsio.com int total_size = 0; 6837b36b6e0Skxie@chelsio.com struct sk_buff *skb; 6847b36b6e0Skxie@chelsio.com 6857b36b6e0Skxie@chelsio.com if (unlikely(csk->state < CTP_ESTABLISHED || 6867b36b6e0Skxie@chelsio.com csk->state == CTP_CLOSE_WAIT_1 || csk->state >= CTP_ABORTING)) { 6877b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK | 6887b36b6e0Skxie@chelsio.com 1 << CXGBI_DBG_PDU_TX, 6897b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, in closing state.\n", 6907b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 6917b36b6e0Skxie@chelsio.com return 0; 6927b36b6e0Skxie@chelsio.com } 6937b36b6e0Skxie@chelsio.com 6947b36b6e0Skxie@chelsio.com while (csk->wr_cred && (skb = skb_peek(&csk->write_queue)) != NULL) { 6957b36b6e0Skxie@chelsio.com int dlen = skb->len; 6967b36b6e0Skxie@chelsio.com int len = skb->len; 6977b36b6e0Skxie@chelsio.com unsigned int credits_needed; 69864bfead8SKaren Xie int flowclen16 = 0; 6997b36b6e0Skxie@chelsio.com 7007b36b6e0Skxie@chelsio.com skb_reset_transport_header(skb); 7017b36b6e0Skxie@chelsio.com if (is_ofld_imm(skb)) 70284944d8cSKaren Xie credits_needed = DIV_ROUND_UP(dlen, 16); 7037b36b6e0Skxie@chelsio.com else 70484944d8cSKaren Xie credits_needed = DIV_ROUND_UP( 70584944d8cSKaren Xie 8 * calc_tx_flits_ofld(skb), 70684944d8cSKaren Xie 16); 70784944d8cSKaren Xie 70884944d8cSKaren Xie if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) 70984944d8cSKaren Xie credits_needed += DIV_ROUND_UP( 71084944d8cSKaren Xie sizeof(struct fw_ofld_tx_data_wr), 7117b36b6e0Skxie@chelsio.com 16); 7127b36b6e0Skxie@chelsio.com 71364bfead8SKaren Xie /* 71464bfead8SKaren Xie * Assumes the initial credits is large enough to support 71564bfead8SKaren Xie * fw_flowc_wr plus largest possible first payload 71664bfead8SKaren Xie */ 71764bfead8SKaren Xie if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { 71864bfead8SKaren Xie flowclen16 = send_tx_flowc_wr(csk); 71964bfead8SKaren Xie csk->wr_cred -= flowclen16; 72064bfead8SKaren Xie csk->wr_una_cred += flowclen16; 72164bfead8SKaren Xie cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); 72264bfead8SKaren Xie } 72364bfead8SKaren Xie 7247b36b6e0Skxie@chelsio.com if (csk->wr_cred < credits_needed) { 7257b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_PDU_TX, 7267b36b6e0Skxie@chelsio.com "csk 0x%p, skb %u/%u, wr %d < %u.\n", 7277b36b6e0Skxie@chelsio.com csk, skb->len, skb->data_len, 7287b36b6e0Skxie@chelsio.com credits_needed, csk->wr_cred); 7297b36b6e0Skxie@chelsio.com break; 7307b36b6e0Skxie@chelsio.com } 7317b36b6e0Skxie@chelsio.com __skb_unlink(skb, &csk->write_queue); 7322126bc5eSKaren Xie set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); 73364bfead8SKaren Xie skb->csum = credits_needed + flowclen16; 7347b36b6e0Skxie@chelsio.com csk->wr_cred -= credits_needed; 7357b36b6e0Skxie@chelsio.com csk->wr_una_cred += credits_needed; 7367b36b6e0Skxie@chelsio.com cxgbi_sock_enqueue_wr(csk, skb); 7377b36b6e0Skxie@chelsio.com 7387b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_PDU_TX, 7397b36b6e0Skxie@chelsio.com "csk 0x%p, skb %u/%u, wr %d, left %u, unack %u.\n", 7407b36b6e0Skxie@chelsio.com csk, skb->len, skb->data_len, credits_needed, 7417b36b6e0Skxie@chelsio.com csk->wr_cred, csk->wr_una_cred); 7427b36b6e0Skxie@chelsio.com 7437b36b6e0Skxie@chelsio.com if (likely(cxgbi_skcb_test_flag(skb, SKCBF_TX_NEED_HDR))) { 7447b36b6e0Skxie@chelsio.com len += cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb)); 7457b36b6e0Skxie@chelsio.com make_tx_data_wr(csk, skb, dlen, len, credits_needed, 7467b36b6e0Skxie@chelsio.com req_completion); 7477b36b6e0Skxie@chelsio.com csk->snd_nxt += len; 7487b36b6e0Skxie@chelsio.com cxgbi_skcb_clear_flag(skb, SKCBF_TX_NEED_HDR); 749fe9b34bfSVarun Prakash } else if (cxgbi_skcb_test_flag(skb, SKCBF_TX_FLAG_COMPL) && 750fe9b34bfSVarun Prakash (csk->wr_una_cred >= (csk->wr_max_cred / 2))) { 751fe9b34bfSVarun Prakash struct cpl_close_con_req *req = 752fe9b34bfSVarun Prakash (struct cpl_close_con_req *)skb->data; 753fe9b34bfSVarun Prakash req->wr.wr_hi |= htonl(FW_WR_COMPL_F); 7547b36b6e0Skxie@chelsio.com } 7557b36b6e0Skxie@chelsio.com total_size += skb->truesize; 7567b36b6e0Skxie@chelsio.com t4_set_arp_err_handler(skb, csk, arp_failure_skb_discard); 7577b36b6e0Skxie@chelsio.com 7587b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_TX, 7597b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, skb 0x%p, %u.\n", 7607b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, skb, len); 7617b36b6e0Skxie@chelsio.com 7627b36b6e0Skxie@chelsio.com cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t); 7637b36b6e0Skxie@chelsio.com } 7647b36b6e0Skxie@chelsio.com return total_size; 7657b36b6e0Skxie@chelsio.com } 7667b36b6e0Skxie@chelsio.com 7677b36b6e0Skxie@chelsio.com static inline void free_atid(struct cxgbi_sock *csk) 7687b36b6e0Skxie@chelsio.com { 7697b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); 7707b36b6e0Skxie@chelsio.com 7717b36b6e0Skxie@chelsio.com if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) { 7727b36b6e0Skxie@chelsio.com cxgb4_free_atid(lldi->tids, csk->atid); 7737b36b6e0Skxie@chelsio.com cxgbi_sock_clear_flag(csk, CTPF_HAS_ATID); 7747b36b6e0Skxie@chelsio.com cxgbi_sock_put(csk); 7757b36b6e0Skxie@chelsio.com } 7767b36b6e0Skxie@chelsio.com } 7777b36b6e0Skxie@chelsio.com 7787b36b6e0Skxie@chelsio.com static void do_act_establish(struct cxgbi_device *cdev, struct sk_buff *skb) 7797b36b6e0Skxie@chelsio.com { 7807b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 7817b36b6e0Skxie@chelsio.com struct cpl_act_establish *req = (struct cpl_act_establish *)skb->data; 7827b36b6e0Skxie@chelsio.com unsigned short tcp_opt = ntohs(req->tcp_opt); 7837b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(req); 7846c53e938SHariprasad Shenai unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); 7857b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 7867b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 7877b36b6e0Skxie@chelsio.com u32 rcv_isn = be32_to_cpu(req->rcv_isn); 7887b36b6e0Skxie@chelsio.com 7897b36b6e0Skxie@chelsio.com csk = lookup_atid(t, atid); 7907b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 7917b36b6e0Skxie@chelsio.com pr_err("NO conn. for atid %u, cdev 0x%p.\n", atid, cdev); 7927b36b6e0Skxie@chelsio.com goto rel_skb; 7937b36b6e0Skxie@chelsio.com } 7947b36b6e0Skxie@chelsio.com 795e27d6169Skxie@chelsio.com if (csk->atid != atid) { 796e27d6169Skxie@chelsio.com pr_err("bad conn atid %u, csk 0x%p,%u,0x%lx,tid %u, atid %u.\n", 797e27d6169Skxie@chelsio.com atid, csk, csk->state, csk->flags, csk->tid, csk->atid); 798e27d6169Skxie@chelsio.com goto rel_skb; 799e27d6169Skxie@chelsio.com } 800e27d6169Skxie@chelsio.com 801759a0cc5SAnish Bhatt pr_info_ipaddr("atid 0x%x, tid 0x%x, csk 0x%p,%u,0x%lx, isn %u.\n", 802759a0cc5SAnish Bhatt (&csk->saddr), (&csk->daddr), 803759a0cc5SAnish Bhatt atid, tid, csk, csk->state, csk->flags, rcv_isn); 804759a0cc5SAnish Bhatt 8051fe1fdb0SVarun Prakash module_put(cdev->owner); 8067b36b6e0Skxie@chelsio.com 8077b36b6e0Skxie@chelsio.com cxgbi_sock_get(csk); 8087b36b6e0Skxie@chelsio.com csk->tid = tid; 8097b36b6e0Skxie@chelsio.com cxgb4_insert_tid(lldi->tids, csk, tid); 8107b36b6e0Skxie@chelsio.com cxgbi_sock_set_flag(csk, CTPF_HAS_TID); 8117b36b6e0Skxie@chelsio.com 8127b36b6e0Skxie@chelsio.com free_atid(csk); 8137b36b6e0Skxie@chelsio.com 8147b36b6e0Skxie@chelsio.com spin_lock_bh(&csk->lock); 8157b36b6e0Skxie@chelsio.com if (unlikely(csk->state != CTP_ACTIVE_OPEN)) 8167b36b6e0Skxie@chelsio.com pr_info("csk 0x%p,%u,0x%lx,%u, got EST.\n", 8177b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 8187b36b6e0Skxie@chelsio.com 8197b36b6e0Skxie@chelsio.com if (csk->retry_timer.function) { 8207b36b6e0Skxie@chelsio.com del_timer(&csk->retry_timer); 8217b36b6e0Skxie@chelsio.com csk->retry_timer.function = NULL; 8227b36b6e0Skxie@chelsio.com } 8237b36b6e0Skxie@chelsio.com 8247b36b6e0Skxie@chelsio.com csk->copied_seq = csk->rcv_wup = csk->rcv_nxt = rcv_isn; 8257b36b6e0Skxie@chelsio.com /* 8267b36b6e0Skxie@chelsio.com * Causes the first RX_DATA_ACK to supply any Rx credits we couldn't 8277b36b6e0Skxie@chelsio.com * pass through opt0. 8287b36b6e0Skxie@chelsio.com */ 82981daf10cSKaren Xie if (csk->rcv_win > (RCV_BUFSIZ_MASK << 10)) 83081daf10cSKaren Xie csk->rcv_wup -= csk->rcv_win - (RCV_BUFSIZ_MASK << 10); 8317b36b6e0Skxie@chelsio.com 8326c53e938SHariprasad Shenai csk->advmss = lldi->mtus[TCPOPT_MSS_G(tcp_opt)] - 40; 8336c53e938SHariprasad Shenai if (TCPOPT_TSTAMP_G(tcp_opt)) 8347b36b6e0Skxie@chelsio.com csk->advmss -= 12; 8357b36b6e0Skxie@chelsio.com if (csk->advmss < 128) 8367b36b6e0Skxie@chelsio.com csk->advmss = 128; 8377b36b6e0Skxie@chelsio.com 8387b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 8397b36b6e0Skxie@chelsio.com "csk 0x%p, mss_idx %u, advmss %u.\n", 8406c53e938SHariprasad Shenai csk, TCPOPT_MSS_G(tcp_opt), csk->advmss); 8417b36b6e0Skxie@chelsio.com 8427b36b6e0Skxie@chelsio.com cxgbi_sock_established(csk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); 8437b36b6e0Skxie@chelsio.com 8447b36b6e0Skxie@chelsio.com if (unlikely(cxgbi_sock_flag(csk, CTPF_ACTIVE_CLOSE_NEEDED))) 8457b36b6e0Skxie@chelsio.com send_abort_req(csk); 8467b36b6e0Skxie@chelsio.com else { 8477b36b6e0Skxie@chelsio.com if (skb_queue_len(&csk->write_queue)) 8487b36b6e0Skxie@chelsio.com push_tx_frames(csk, 0); 8497b36b6e0Skxie@chelsio.com cxgbi_conn_tx_open(csk); 8507b36b6e0Skxie@chelsio.com } 8517b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 8527b36b6e0Skxie@chelsio.com 8537b36b6e0Skxie@chelsio.com rel_skb: 8547b36b6e0Skxie@chelsio.com __kfree_skb(skb); 8557b36b6e0Skxie@chelsio.com } 8567b36b6e0Skxie@chelsio.com 8577b36b6e0Skxie@chelsio.com static int act_open_rpl_status_to_errno(int status) 8587b36b6e0Skxie@chelsio.com { 8597b36b6e0Skxie@chelsio.com switch (status) { 8607b36b6e0Skxie@chelsio.com case CPL_ERR_CONN_RESET: 8617b36b6e0Skxie@chelsio.com return -ECONNREFUSED; 8627b36b6e0Skxie@chelsio.com case CPL_ERR_ARP_MISS: 8637b36b6e0Skxie@chelsio.com return -EHOSTUNREACH; 8647b36b6e0Skxie@chelsio.com case CPL_ERR_CONN_TIMEDOUT: 8657b36b6e0Skxie@chelsio.com return -ETIMEDOUT; 8667b36b6e0Skxie@chelsio.com case CPL_ERR_TCAM_FULL: 8677b36b6e0Skxie@chelsio.com return -ENOMEM; 8687b36b6e0Skxie@chelsio.com case CPL_ERR_CONN_EXIST: 8697b36b6e0Skxie@chelsio.com return -EADDRINUSE; 8707b36b6e0Skxie@chelsio.com default: 8717b36b6e0Skxie@chelsio.com return -EIO; 8727b36b6e0Skxie@chelsio.com } 8737b36b6e0Skxie@chelsio.com } 8747b36b6e0Skxie@chelsio.com 8757b36b6e0Skxie@chelsio.com static void csk_act_open_retry_timer(unsigned long data) 8767b36b6e0Skxie@chelsio.com { 877001586a7SAnish Bhatt struct sk_buff *skb = NULL; 8787b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk = (struct cxgbi_sock *)data; 8793bd3e8bfSKaren Xie struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev); 880759a0cc5SAnish Bhatt void (*send_act_open_func)(struct cxgbi_sock *, struct sk_buff *, 881759a0cc5SAnish Bhatt struct l2t_entry *); 882759a0cc5SAnish Bhatt int t4 = is_t4(lldi->adapter_type), size, size6; 8837b36b6e0Skxie@chelsio.com 8847b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 8857b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u.\n", 8867b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 8877b36b6e0Skxie@chelsio.com 8887b36b6e0Skxie@chelsio.com cxgbi_sock_get(csk); 8897b36b6e0Skxie@chelsio.com spin_lock_bh(&csk->lock); 890759a0cc5SAnish Bhatt 891759a0cc5SAnish Bhatt if (t4) { 892759a0cc5SAnish Bhatt size = sizeof(struct cpl_act_open_req); 893759a0cc5SAnish Bhatt size6 = sizeof(struct cpl_act_open_req6); 894759a0cc5SAnish Bhatt } else { 895759a0cc5SAnish Bhatt size = sizeof(struct cpl_t5_act_open_req); 896759a0cc5SAnish Bhatt size6 = sizeof(struct cpl_t5_act_open_req6); 897759a0cc5SAnish Bhatt } 898759a0cc5SAnish Bhatt 899759a0cc5SAnish Bhatt if (csk->csk_family == AF_INET) { 900759a0cc5SAnish Bhatt send_act_open_func = send_act_open_req; 901759a0cc5SAnish Bhatt skb = alloc_wr(size, 0, GFP_ATOMIC); 902f42bb57cSAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 903759a0cc5SAnish Bhatt } else { 904759a0cc5SAnish Bhatt send_act_open_func = send_act_open_req6; 905759a0cc5SAnish Bhatt skb = alloc_wr(size6, 0, GFP_ATOMIC); 906f42bb57cSAnish Bhatt #endif 907759a0cc5SAnish Bhatt } 908759a0cc5SAnish Bhatt 9097b36b6e0Skxie@chelsio.com if (!skb) 9107b36b6e0Skxie@chelsio.com cxgbi_sock_fail_act_open(csk, -ENOMEM); 9117b36b6e0Skxie@chelsio.com else { 9127b36b6e0Skxie@chelsio.com skb->sk = (struct sock *)csk; 9137b36b6e0Skxie@chelsio.com t4_set_arp_err_handler(skb, csk, 9147b36b6e0Skxie@chelsio.com cxgbi_sock_act_open_req_arp_failure); 915759a0cc5SAnish Bhatt send_act_open_func(csk, skb, csk->l2t); 9167b36b6e0Skxie@chelsio.com } 917759a0cc5SAnish Bhatt 9187b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 9197b36b6e0Skxie@chelsio.com cxgbi_sock_put(csk); 920759a0cc5SAnish Bhatt 9217b36b6e0Skxie@chelsio.com } 9227b36b6e0Skxie@chelsio.com 923928567adSKaren Xie static inline bool is_neg_adv(unsigned int status) 924928567adSKaren Xie { 925928567adSKaren Xie return status == CPL_ERR_RTX_NEG_ADVICE || 926928567adSKaren Xie status == CPL_ERR_KEEPALV_NEG_ADVICE || 927928567adSKaren Xie status == CPL_ERR_PERSIST_NEG_ADVICE; 928928567adSKaren Xie } 929928567adSKaren Xie 9307b36b6e0Skxie@chelsio.com static void do_act_open_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) 9317b36b6e0Skxie@chelsio.com { 9327b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 9337b36b6e0Skxie@chelsio.com struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)skb->data; 9347b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(rpl); 9357b36b6e0Skxie@chelsio.com unsigned int atid = 9366c53e938SHariprasad Shenai TID_TID_G(AOPEN_ATID_G(be32_to_cpu(rpl->atid_status))); 9376c53e938SHariprasad Shenai unsigned int status = AOPEN_STATUS_G(be32_to_cpu(rpl->atid_status)); 9387b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 9397b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 9407b36b6e0Skxie@chelsio.com 9417b36b6e0Skxie@chelsio.com csk = lookup_atid(t, atid); 9427b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 9437b36b6e0Skxie@chelsio.com pr_err("NO matching conn. atid %u, tid %u.\n", atid, tid); 9447b36b6e0Skxie@chelsio.com goto rel_skb; 9457b36b6e0Skxie@chelsio.com } 9467b36b6e0Skxie@chelsio.com 947759a0cc5SAnish Bhatt pr_info_ipaddr("tid %u/%u, status %u.\n" 948759a0cc5SAnish Bhatt "csk 0x%p,%u,0x%lx. ", (&csk->saddr), (&csk->daddr), 949e27d6169Skxie@chelsio.com atid, tid, status, csk, csk->state, csk->flags); 9507b36b6e0Skxie@chelsio.com 951928567adSKaren Xie if (is_neg_adv(status)) 952150cca7cSKaren Xie goto rel_skb; 953150cca7cSKaren Xie 9541fe1fdb0SVarun Prakash module_put(cdev->owner); 955ee7255adSAnish Bhatt 9567b36b6e0Skxie@chelsio.com if (status && status != CPL_ERR_TCAM_FULL && 9577b36b6e0Skxie@chelsio.com status != CPL_ERR_CONN_EXIST && 9587b36b6e0Skxie@chelsio.com status != CPL_ERR_ARP_MISS) 9597b36b6e0Skxie@chelsio.com cxgb4_remove_tid(lldi->tids, csk->port_id, GET_TID(rpl)); 9607b36b6e0Skxie@chelsio.com 9617b36b6e0Skxie@chelsio.com cxgbi_sock_get(csk); 9627b36b6e0Skxie@chelsio.com spin_lock_bh(&csk->lock); 9637b36b6e0Skxie@chelsio.com 9647b36b6e0Skxie@chelsio.com if (status == CPL_ERR_CONN_EXIST && 9657b36b6e0Skxie@chelsio.com csk->retry_timer.function != csk_act_open_retry_timer) { 9667b36b6e0Skxie@chelsio.com csk->retry_timer.function = csk_act_open_retry_timer; 9677b36b6e0Skxie@chelsio.com mod_timer(&csk->retry_timer, jiffies + HZ / 2); 9687b36b6e0Skxie@chelsio.com } else 9697b36b6e0Skxie@chelsio.com cxgbi_sock_fail_act_open(csk, 9707b36b6e0Skxie@chelsio.com act_open_rpl_status_to_errno(status)); 9717b36b6e0Skxie@chelsio.com 9727b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 9737b36b6e0Skxie@chelsio.com cxgbi_sock_put(csk); 9747b36b6e0Skxie@chelsio.com rel_skb: 9757b36b6e0Skxie@chelsio.com __kfree_skb(skb); 9767b36b6e0Skxie@chelsio.com } 9777b36b6e0Skxie@chelsio.com 9787b36b6e0Skxie@chelsio.com static void do_peer_close(struct cxgbi_device *cdev, struct sk_buff *skb) 9797b36b6e0Skxie@chelsio.com { 9807b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 9817b36b6e0Skxie@chelsio.com struct cpl_peer_close *req = (struct cpl_peer_close *)skb->data; 9827b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(req); 9837b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 9847b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 9857b36b6e0Skxie@chelsio.com 9867b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 9877b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 9887b36b6e0Skxie@chelsio.com pr_err("can't find connection for tid %u.\n", tid); 9897b36b6e0Skxie@chelsio.com goto rel_skb; 9907b36b6e0Skxie@chelsio.com } 991759a0cc5SAnish Bhatt pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", 992759a0cc5SAnish Bhatt (&csk->saddr), (&csk->daddr), 9937b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 9947b36b6e0Skxie@chelsio.com cxgbi_sock_rcv_peer_close(csk); 9957b36b6e0Skxie@chelsio.com rel_skb: 9967b36b6e0Skxie@chelsio.com __kfree_skb(skb); 9977b36b6e0Skxie@chelsio.com } 9987b36b6e0Skxie@chelsio.com 9997b36b6e0Skxie@chelsio.com static void do_close_con_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) 10007b36b6e0Skxie@chelsio.com { 10017b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 10027b36b6e0Skxie@chelsio.com struct cpl_close_con_rpl *rpl = (struct cpl_close_con_rpl *)skb->data; 10037b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(rpl); 10047b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 10057b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 10067b36b6e0Skxie@chelsio.com 10077b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 10087b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 10097b36b6e0Skxie@chelsio.com pr_err("can't find connection for tid %u.\n", tid); 10107b36b6e0Skxie@chelsio.com goto rel_skb; 10117b36b6e0Skxie@chelsio.com } 1012759a0cc5SAnish Bhatt pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u.\n", 1013759a0cc5SAnish Bhatt (&csk->saddr), (&csk->daddr), 10147b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 10157b36b6e0Skxie@chelsio.com cxgbi_sock_rcv_close_conn_rpl(csk, ntohl(rpl->snd_nxt)); 10167b36b6e0Skxie@chelsio.com rel_skb: 10177b36b6e0Skxie@chelsio.com __kfree_skb(skb); 10187b36b6e0Skxie@chelsio.com } 10197b36b6e0Skxie@chelsio.com 10207b36b6e0Skxie@chelsio.com static int abort_status_to_errno(struct cxgbi_sock *csk, int abort_reason, 10217b36b6e0Skxie@chelsio.com int *need_rst) 10227b36b6e0Skxie@chelsio.com { 10237b36b6e0Skxie@chelsio.com switch (abort_reason) { 10247b36b6e0Skxie@chelsio.com case CPL_ERR_BAD_SYN: /* fall through */ 10257b36b6e0Skxie@chelsio.com case CPL_ERR_CONN_RESET: 10267b36b6e0Skxie@chelsio.com return csk->state > CTP_ESTABLISHED ? 10277b36b6e0Skxie@chelsio.com -EPIPE : -ECONNRESET; 10287b36b6e0Skxie@chelsio.com case CPL_ERR_XMIT_TIMEDOUT: 10297b36b6e0Skxie@chelsio.com case CPL_ERR_PERSIST_TIMEDOUT: 10307b36b6e0Skxie@chelsio.com case CPL_ERR_FINWAIT2_TIMEDOUT: 10317b36b6e0Skxie@chelsio.com case CPL_ERR_KEEPALIVE_TIMEDOUT: 10327b36b6e0Skxie@chelsio.com return -ETIMEDOUT; 10337b36b6e0Skxie@chelsio.com default: 10347b36b6e0Skxie@chelsio.com return -EIO; 10357b36b6e0Skxie@chelsio.com } 10367b36b6e0Skxie@chelsio.com } 10377b36b6e0Skxie@chelsio.com 10387b36b6e0Skxie@chelsio.com static void do_abort_req_rss(struct cxgbi_device *cdev, struct sk_buff *skb) 10397b36b6e0Skxie@chelsio.com { 10407b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 10417b36b6e0Skxie@chelsio.com struct cpl_abort_req_rss *req = (struct cpl_abort_req_rss *)skb->data; 10427b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(req); 10437b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 10447b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 10457b36b6e0Skxie@chelsio.com int rst_status = CPL_ABORT_NO_RST; 10467b36b6e0Skxie@chelsio.com 10477b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 10487b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 10497b36b6e0Skxie@chelsio.com pr_err("can't find connection for tid %u.\n", tid); 10507b36b6e0Skxie@chelsio.com goto rel_skb; 10517b36b6e0Skxie@chelsio.com } 10527b36b6e0Skxie@chelsio.com 1053759a0cc5SAnish Bhatt pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", 1054759a0cc5SAnish Bhatt (&csk->saddr), (&csk->daddr), 10557b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, req->status); 10567b36b6e0Skxie@chelsio.com 1057928567adSKaren Xie if (is_neg_adv(req->status)) 10587b36b6e0Skxie@chelsio.com goto rel_skb; 10597b36b6e0Skxie@chelsio.com 10607b36b6e0Skxie@chelsio.com cxgbi_sock_get(csk); 10617b36b6e0Skxie@chelsio.com spin_lock_bh(&csk->lock); 10627b36b6e0Skxie@chelsio.com 10637b07bf24SAnish Bhatt cxgbi_sock_clear_flag(csk, CTPF_ABORT_REQ_RCVD); 10647b07bf24SAnish Bhatt 10657b07bf24SAnish Bhatt if (!cxgbi_sock_flag(csk, CTPF_TX_DATA_SENT)) { 10667b07bf24SAnish Bhatt send_tx_flowc_wr(csk); 10677b07bf24SAnish Bhatt cxgbi_sock_set_flag(csk, CTPF_TX_DATA_SENT); 10687b36b6e0Skxie@chelsio.com } 10697b36b6e0Skxie@chelsio.com 10707b07bf24SAnish Bhatt cxgbi_sock_set_flag(csk, CTPF_ABORT_REQ_RCVD); 10717b07bf24SAnish Bhatt cxgbi_sock_set_state(csk, CTP_ABORTING); 10727b07bf24SAnish Bhatt 10737b36b6e0Skxie@chelsio.com send_abort_rpl(csk, rst_status); 10747b36b6e0Skxie@chelsio.com 10757b36b6e0Skxie@chelsio.com if (!cxgbi_sock_flag(csk, CTPF_ABORT_RPL_PENDING)) { 10767b36b6e0Skxie@chelsio.com csk->err = abort_status_to_errno(csk, req->status, &rst_status); 10777b36b6e0Skxie@chelsio.com cxgbi_sock_closed(csk); 10787b36b6e0Skxie@chelsio.com } 10797b07bf24SAnish Bhatt 10807b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 10817b36b6e0Skxie@chelsio.com cxgbi_sock_put(csk); 10827b36b6e0Skxie@chelsio.com rel_skb: 10837b36b6e0Skxie@chelsio.com __kfree_skb(skb); 10847b36b6e0Skxie@chelsio.com } 10857b36b6e0Skxie@chelsio.com 10867b36b6e0Skxie@chelsio.com static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *skb) 10877b36b6e0Skxie@chelsio.com { 10887b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 10897b36b6e0Skxie@chelsio.com struct cpl_abort_rpl_rss *rpl = (struct cpl_abort_rpl_rss *)skb->data; 10907b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(rpl); 10917b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 10927b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 10937b36b6e0Skxie@chelsio.com 10947b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 10957b36b6e0Skxie@chelsio.com if (!csk) 10967b36b6e0Skxie@chelsio.com goto rel_skb; 10977b36b6e0Skxie@chelsio.com 1098759a0cc5SAnish Bhatt if (csk) 1099759a0cc5SAnish Bhatt pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u, status %u.\n", 1100759a0cc5SAnish Bhatt (&csk->saddr), (&csk->daddr), csk, 1101759a0cc5SAnish Bhatt csk->state, csk->flags, csk->tid, rpl->status); 11027b36b6e0Skxie@chelsio.com 11037b36b6e0Skxie@chelsio.com if (rpl->status == CPL_ERR_ABORT_FAILED) 11047b36b6e0Skxie@chelsio.com goto rel_skb; 11057b36b6e0Skxie@chelsio.com 11067b36b6e0Skxie@chelsio.com cxgbi_sock_rcv_abort_rpl(csk); 11077b36b6e0Skxie@chelsio.com rel_skb: 11087b36b6e0Skxie@chelsio.com __kfree_skb(skb); 11097b36b6e0Skxie@chelsio.com } 11107b36b6e0Skxie@chelsio.com 1111f7bcd2e1SKaren Xie static void do_rx_data(struct cxgbi_device *cdev, struct sk_buff *skb) 1112f7bcd2e1SKaren Xie { 1113f7bcd2e1SKaren Xie struct cxgbi_sock *csk; 1114f7bcd2e1SKaren Xie struct cpl_rx_data *cpl = (struct cpl_rx_data *)skb->data; 1115f7bcd2e1SKaren Xie unsigned int tid = GET_TID(cpl); 1116f7bcd2e1SKaren Xie struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 1117f7bcd2e1SKaren Xie struct tid_info *t = lldi->tids; 1118f7bcd2e1SKaren Xie 1119f7bcd2e1SKaren Xie csk = lookup_tid(t, tid); 1120f7bcd2e1SKaren Xie if (!csk) { 1121f7bcd2e1SKaren Xie pr_err("can't find connection for tid %u.\n", tid); 1122f7bcd2e1SKaren Xie } else { 1123f7bcd2e1SKaren Xie /* not expecting this, reset the connection. */ 1124f7bcd2e1SKaren Xie pr_err("csk 0x%p, tid %u, rcv cpl_rx_data.\n", csk, tid); 1125f7bcd2e1SKaren Xie spin_lock_bh(&csk->lock); 1126f7bcd2e1SKaren Xie send_abort_req(csk); 1127f7bcd2e1SKaren Xie spin_unlock_bh(&csk->lock); 1128f7bcd2e1SKaren Xie } 1129f7bcd2e1SKaren Xie __kfree_skb(skb); 1130f7bcd2e1SKaren Xie } 1131f7bcd2e1SKaren Xie 11327b36b6e0Skxie@chelsio.com static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) 11337b36b6e0Skxie@chelsio.com { 11347b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 11357b36b6e0Skxie@chelsio.com struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; 11367b36b6e0Skxie@chelsio.com unsigned short pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); 11377b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(cpl); 11387b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 11397b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 11407b36b6e0Skxie@chelsio.com 11417b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 11427b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 11437b36b6e0Skxie@chelsio.com pr_err("can't find conn. for tid %u.\n", tid); 11447b36b6e0Skxie@chelsio.com goto rel_skb; 11457b36b6e0Skxie@chelsio.com } 11467b36b6e0Skxie@chelsio.com 11477b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 11487b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", 11497b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, skb, skb->len, 11507b36b6e0Skxie@chelsio.com pdu_len_ddp); 11517b36b6e0Skxie@chelsio.com 11527b36b6e0Skxie@chelsio.com spin_lock_bh(&csk->lock); 11537b36b6e0Skxie@chelsio.com 11547b36b6e0Skxie@chelsio.com if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { 11557b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 11567b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, bad state.\n", 11577b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 11587b36b6e0Skxie@chelsio.com if (csk->state != CTP_ABORTING) 11597b36b6e0Skxie@chelsio.com goto abort_conn; 11607b36b6e0Skxie@chelsio.com else 11617b36b6e0Skxie@chelsio.com goto discard; 11627b36b6e0Skxie@chelsio.com } 11637b36b6e0Skxie@chelsio.com 11647b36b6e0Skxie@chelsio.com cxgbi_skcb_tcp_seq(skb) = ntohl(cpl->seq); 1165e27d6169Skxie@chelsio.com cxgbi_skcb_flags(skb) = 0; 1166e27d6169Skxie@chelsio.com 11677b36b6e0Skxie@chelsio.com skb_reset_transport_header(skb); 11687b36b6e0Skxie@chelsio.com __skb_pull(skb, sizeof(*cpl)); 11697b36b6e0Skxie@chelsio.com __pskb_trim(skb, ntohs(cpl->len)); 11707b36b6e0Skxie@chelsio.com 11717b36b6e0Skxie@chelsio.com if (!csk->skb_ulp_lhdr) { 11727b36b6e0Skxie@chelsio.com unsigned char *bhs; 11733bd3e8bfSKaren Xie unsigned int hlen, dlen, plen; 11747b36b6e0Skxie@chelsio.com 11757b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 11767b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n", 11777b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, skb); 11787b36b6e0Skxie@chelsio.com csk->skb_ulp_lhdr = skb; 1179e27d6169Skxie@chelsio.com cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); 11807b36b6e0Skxie@chelsio.com 1181e27d6169Skxie@chelsio.com if (cxgbi_skcb_tcp_seq(skb) != csk->rcv_nxt) { 11827b36b6e0Skxie@chelsio.com pr_info("tid %u, CPL_ISCSI_HDR, bad seq, 0x%x/0x%x.\n", 1183e27d6169Skxie@chelsio.com csk->tid, cxgbi_skcb_tcp_seq(skb), 11847b36b6e0Skxie@chelsio.com csk->rcv_nxt); 11857b36b6e0Skxie@chelsio.com goto abort_conn; 11867b36b6e0Skxie@chelsio.com } 11877b36b6e0Skxie@chelsio.com 1188e27d6169Skxie@chelsio.com bhs = skb->data; 11897b36b6e0Skxie@chelsio.com hlen = ntohs(cpl->len); 11907b36b6e0Skxie@chelsio.com dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF; 11917b36b6e0Skxie@chelsio.com 1192bdc590b9SHariprasad Shenai plen = ISCSI_PDU_LEN_G(pdu_len_ddp); 11933bd3e8bfSKaren Xie if (is_t4(lldi->adapter_type)) 11943bd3e8bfSKaren Xie plen -= 40; 11953bd3e8bfSKaren Xie 11963bd3e8bfSKaren Xie if ((hlen + dlen) != plen) { 11977b36b6e0Skxie@chelsio.com pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len " 11987b36b6e0Skxie@chelsio.com "mismatch %u != %u + %u, seq 0x%x.\n", 11993bd3e8bfSKaren Xie csk->tid, plen, hlen, dlen, 12003bd3e8bfSKaren Xie cxgbi_skcb_tcp_seq(skb)); 12017b36b6e0Skxie@chelsio.com goto abort_conn; 12027b36b6e0Skxie@chelsio.com } 12037b36b6e0Skxie@chelsio.com 12047b36b6e0Skxie@chelsio.com cxgbi_skcb_rx_pdulen(skb) = (hlen + dlen + 3) & (~0x3); 12057b36b6e0Skxie@chelsio.com if (dlen) 12067b36b6e0Skxie@chelsio.com cxgbi_skcb_rx_pdulen(skb) += csk->dcrc_len; 12077b36b6e0Skxie@chelsio.com csk->rcv_nxt += cxgbi_skcb_rx_pdulen(skb); 12087b36b6e0Skxie@chelsio.com 12097b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 12107b36b6e0Skxie@chelsio.com "csk 0x%p, skb 0x%p, 0x%x,%u+%u,0x%x,0x%x.\n", 12117b36b6e0Skxie@chelsio.com csk, skb, *bhs, hlen, dlen, 12127b36b6e0Skxie@chelsio.com ntohl(*((unsigned int *)(bhs + 16))), 12137b36b6e0Skxie@chelsio.com ntohl(*((unsigned int *)(bhs + 24)))); 12147b36b6e0Skxie@chelsio.com 12157b36b6e0Skxie@chelsio.com } else { 1216e27d6169Skxie@chelsio.com struct sk_buff *lskb = csk->skb_ulp_lhdr; 12177b36b6e0Skxie@chelsio.com 1218e27d6169Skxie@chelsio.com cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); 12197b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 12207b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", 12217b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, skb, lskb); 12227b36b6e0Skxie@chelsio.com } 12237b36b6e0Skxie@chelsio.com 12247b36b6e0Skxie@chelsio.com __skb_queue_tail(&csk->receive_queue, skb); 12257b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 12267b36b6e0Skxie@chelsio.com return; 12277b36b6e0Skxie@chelsio.com 12287b36b6e0Skxie@chelsio.com abort_conn: 12297b36b6e0Skxie@chelsio.com send_abort_req(csk); 12307b36b6e0Skxie@chelsio.com discard: 12317b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 12327b36b6e0Skxie@chelsio.com rel_skb: 12337b36b6e0Skxie@chelsio.com __kfree_skb(skb); 12347b36b6e0Skxie@chelsio.com } 12357b36b6e0Skxie@chelsio.com 123644830d8fSVarun Prakash static void do_rx_iscsi_data(struct cxgbi_device *cdev, struct sk_buff *skb) 123744830d8fSVarun Prakash { 123844830d8fSVarun Prakash struct cxgbi_sock *csk; 123944830d8fSVarun Prakash struct cpl_iscsi_hdr *cpl = (struct cpl_iscsi_hdr *)skb->data; 124044830d8fSVarun Prakash struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 124144830d8fSVarun Prakash struct tid_info *t = lldi->tids; 124244830d8fSVarun Prakash struct sk_buff *lskb; 124344830d8fSVarun Prakash u32 tid = GET_TID(cpl); 124444830d8fSVarun Prakash u16 pdu_len_ddp = be16_to_cpu(cpl->pdu_len_ddp); 124544830d8fSVarun Prakash 124644830d8fSVarun Prakash csk = lookup_tid(t, tid); 124744830d8fSVarun Prakash if (unlikely(!csk)) { 124844830d8fSVarun Prakash pr_err("can't find conn. for tid %u.\n", tid); 124944830d8fSVarun Prakash goto rel_skb; 125044830d8fSVarun Prakash } 125144830d8fSVarun Prakash 125244830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 125344830d8fSVarun Prakash "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p,%u, 0x%x.\n", 125444830d8fSVarun Prakash csk, csk->state, csk->flags, csk->tid, skb, 125544830d8fSVarun Prakash skb->len, pdu_len_ddp); 125644830d8fSVarun Prakash 125744830d8fSVarun Prakash spin_lock_bh(&csk->lock); 125844830d8fSVarun Prakash 125944830d8fSVarun Prakash if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { 126044830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 126144830d8fSVarun Prakash "csk 0x%p,%u,0x%lx,%u, bad state.\n", 126244830d8fSVarun Prakash csk, csk->state, csk->flags, csk->tid); 126344830d8fSVarun Prakash 126444830d8fSVarun Prakash if (csk->state != CTP_ABORTING) 126544830d8fSVarun Prakash goto abort_conn; 126644830d8fSVarun Prakash else 126744830d8fSVarun Prakash goto discard; 126844830d8fSVarun Prakash } 126944830d8fSVarun Prakash 127044830d8fSVarun Prakash cxgbi_skcb_tcp_seq(skb) = be32_to_cpu(cpl->seq); 127144830d8fSVarun Prakash cxgbi_skcb_flags(skb) = 0; 127244830d8fSVarun Prakash 127344830d8fSVarun Prakash skb_reset_transport_header(skb); 127444830d8fSVarun Prakash __skb_pull(skb, sizeof(*cpl)); 127544830d8fSVarun Prakash __pskb_trim(skb, ntohs(cpl->len)); 127644830d8fSVarun Prakash 127744830d8fSVarun Prakash if (!csk->skb_ulp_lhdr) 127844830d8fSVarun Prakash csk->skb_ulp_lhdr = skb; 127944830d8fSVarun Prakash 128044830d8fSVarun Prakash lskb = csk->skb_ulp_lhdr; 128144830d8fSVarun Prakash cxgbi_skcb_set_flag(lskb, SKCBF_RX_DATA); 128244830d8fSVarun Prakash 128344830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 128444830d8fSVarun Prakash "csk 0x%p,%u,0x%lx, skb 0x%p data, 0x%p.\n", 128544830d8fSVarun Prakash csk, csk->state, csk->flags, skb, lskb); 128644830d8fSVarun Prakash 128744830d8fSVarun Prakash __skb_queue_tail(&csk->receive_queue, skb); 128844830d8fSVarun Prakash spin_unlock_bh(&csk->lock); 128944830d8fSVarun Prakash return; 129044830d8fSVarun Prakash 129144830d8fSVarun Prakash abort_conn: 129244830d8fSVarun Prakash send_abort_req(csk); 129344830d8fSVarun Prakash discard: 129444830d8fSVarun Prakash spin_unlock_bh(&csk->lock); 129544830d8fSVarun Prakash rel_skb: 129644830d8fSVarun Prakash __kfree_skb(skb); 129744830d8fSVarun Prakash } 129844830d8fSVarun Prakash 129944830d8fSVarun Prakash static void 130044830d8fSVarun Prakash cxgb4i_process_ddpvld(struct cxgbi_sock *csk, 130144830d8fSVarun Prakash struct sk_buff *skb, u32 ddpvld) 130244830d8fSVarun Prakash { 130344830d8fSVarun Prakash if (ddpvld & (1 << CPL_RX_DDP_STATUS_HCRC_SHIFT)) { 130444830d8fSVarun Prakash pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, hcrc bad 0x%lx.\n", 130544830d8fSVarun Prakash csk, skb, ddpvld, cxgbi_skcb_flags(skb)); 130644830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_HCRC_ERR); 130744830d8fSVarun Prakash } 130844830d8fSVarun Prakash 130944830d8fSVarun Prakash if (ddpvld & (1 << CPL_RX_DDP_STATUS_DCRC_SHIFT)) { 131044830d8fSVarun Prakash pr_info("csk 0x%p, lhdr 0x%p, status 0x%x, dcrc bad 0x%lx.\n", 131144830d8fSVarun Prakash csk, skb, ddpvld, cxgbi_skcb_flags(skb)); 131244830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_DCRC_ERR); 131344830d8fSVarun Prakash } 131444830d8fSVarun Prakash 131544830d8fSVarun Prakash if (ddpvld & (1 << CPL_RX_DDP_STATUS_PAD_SHIFT)) { 131644830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_PDU_RX, 131744830d8fSVarun Prakash "csk 0x%p, lhdr 0x%p, status 0x%x, pad bad.\n", 131844830d8fSVarun Prakash csk, skb, ddpvld); 131944830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_PAD_ERR); 132044830d8fSVarun Prakash } 132144830d8fSVarun Prakash 132244830d8fSVarun Prakash if ((ddpvld & (1 << CPL_RX_DDP_STATUS_DDP_SHIFT)) && 132344830d8fSVarun Prakash !cxgbi_skcb_test_flag(skb, SKCBF_RX_DATA)) { 132444830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_PDU_RX, 132544830d8fSVarun Prakash "csk 0x%p, lhdr 0x%p, 0x%x, data ddp'ed.\n", 132644830d8fSVarun Prakash csk, skb, ddpvld); 132744830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_DATA_DDPD); 132844830d8fSVarun Prakash } 132944830d8fSVarun Prakash } 133044830d8fSVarun Prakash 13317b36b6e0Skxie@chelsio.com static void do_rx_data_ddp(struct cxgbi_device *cdev, 13327b36b6e0Skxie@chelsio.com struct sk_buff *skb) 13337b36b6e0Skxie@chelsio.com { 13347b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 13357b36b6e0Skxie@chelsio.com struct sk_buff *lskb; 13367b36b6e0Skxie@chelsio.com struct cpl_rx_data_ddp *rpl = (struct cpl_rx_data_ddp *)skb->data; 13377b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(rpl); 13387b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 13397b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 134044830d8fSVarun Prakash u32 ddpvld = be32_to_cpu(rpl->ddpvld); 13417b36b6e0Skxie@chelsio.com 13427b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 13437b36b6e0Skxie@chelsio.com if (unlikely(!csk)) { 13447b36b6e0Skxie@chelsio.com pr_err("can't find connection for tid %u.\n", tid); 13457b36b6e0Skxie@chelsio.com goto rel_skb; 13467b36b6e0Skxie@chelsio.com } 13477b36b6e0Skxie@chelsio.com 13487b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 13497b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p.\n", 135044830d8fSVarun Prakash csk, csk->state, csk->flags, skb, ddpvld, csk->skb_ulp_lhdr); 13517b36b6e0Skxie@chelsio.com 13527b36b6e0Skxie@chelsio.com spin_lock_bh(&csk->lock); 13537b36b6e0Skxie@chelsio.com 13547b36b6e0Skxie@chelsio.com if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { 13557b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 13567b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u, bad state.\n", 13577b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 13587b36b6e0Skxie@chelsio.com if (csk->state != CTP_ABORTING) 13597b36b6e0Skxie@chelsio.com goto abort_conn; 13607b36b6e0Skxie@chelsio.com else 13617b36b6e0Skxie@chelsio.com goto discard; 13627b36b6e0Skxie@chelsio.com } 13637b36b6e0Skxie@chelsio.com 13647b36b6e0Skxie@chelsio.com if (!csk->skb_ulp_lhdr) { 13657b36b6e0Skxie@chelsio.com pr_err("tid 0x%x, rcv RX_DATA_DDP w/o pdu bhs.\n", csk->tid); 13667b36b6e0Skxie@chelsio.com goto abort_conn; 13677b36b6e0Skxie@chelsio.com } 13687b36b6e0Skxie@chelsio.com 13697b36b6e0Skxie@chelsio.com lskb = csk->skb_ulp_lhdr; 13707b36b6e0Skxie@chelsio.com csk->skb_ulp_lhdr = NULL; 13717b36b6e0Skxie@chelsio.com 13727b36b6e0Skxie@chelsio.com cxgbi_skcb_rx_ddigest(lskb) = ntohl(rpl->ulp_crc); 13737b36b6e0Skxie@chelsio.com 13747b36b6e0Skxie@chelsio.com if (ntohs(rpl->len) != cxgbi_skcb_rx_pdulen(lskb)) 13757b36b6e0Skxie@chelsio.com pr_info("tid 0x%x, RX_DATA_DDP pdulen %u != %u.\n", 13767b36b6e0Skxie@chelsio.com csk->tid, ntohs(rpl->len), cxgbi_skcb_rx_pdulen(lskb)); 13777b36b6e0Skxie@chelsio.com 137844830d8fSVarun Prakash cxgb4i_process_ddpvld(csk, lskb, ddpvld); 137944830d8fSVarun Prakash 13807b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_PDU_RX, 13817b36b6e0Skxie@chelsio.com "csk 0x%p, lskb 0x%p, f 0x%lx.\n", 13827b36b6e0Skxie@chelsio.com csk, lskb, cxgbi_skcb_flags(lskb)); 13837b36b6e0Skxie@chelsio.com 1384e27d6169Skxie@chelsio.com cxgbi_skcb_set_flag(lskb, SKCBF_RX_STATUS); 13857b36b6e0Skxie@chelsio.com cxgbi_conn_pdu_ready(csk); 13867b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 13877b36b6e0Skxie@chelsio.com goto rel_skb; 13887b36b6e0Skxie@chelsio.com 13897b36b6e0Skxie@chelsio.com abort_conn: 13907b36b6e0Skxie@chelsio.com send_abort_req(csk); 13917b36b6e0Skxie@chelsio.com discard: 13927b36b6e0Skxie@chelsio.com spin_unlock_bh(&csk->lock); 13937b36b6e0Skxie@chelsio.com rel_skb: 13947b36b6e0Skxie@chelsio.com __kfree_skb(skb); 13957b36b6e0Skxie@chelsio.com } 13967b36b6e0Skxie@chelsio.com 139744830d8fSVarun Prakash static void 139844830d8fSVarun Prakash do_rx_iscsi_cmp(struct cxgbi_device *cdev, struct sk_buff *skb) 139944830d8fSVarun Prakash { 140044830d8fSVarun Prakash struct cxgbi_sock *csk; 140144830d8fSVarun Prakash struct cpl_rx_iscsi_cmp *rpl = (struct cpl_rx_iscsi_cmp *)skb->data; 140244830d8fSVarun Prakash struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 140344830d8fSVarun Prakash struct tid_info *t = lldi->tids; 140444830d8fSVarun Prakash struct sk_buff *data_skb = NULL; 140544830d8fSVarun Prakash u32 tid = GET_TID(rpl); 140644830d8fSVarun Prakash u32 ddpvld = be32_to_cpu(rpl->ddpvld); 140744830d8fSVarun Prakash u32 seq = be32_to_cpu(rpl->seq); 140844830d8fSVarun Prakash u16 pdu_len_ddp = be16_to_cpu(rpl->pdu_len_ddp); 140944830d8fSVarun Prakash 141044830d8fSVarun Prakash csk = lookup_tid(t, tid); 141144830d8fSVarun Prakash if (unlikely(!csk)) { 141244830d8fSVarun Prakash pr_err("can't find connection for tid %u.\n", tid); 141344830d8fSVarun Prakash goto rel_skb; 141444830d8fSVarun Prakash } 141544830d8fSVarun Prakash 141644830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX, 141744830d8fSVarun Prakash "csk 0x%p,%u,0x%lx, skb 0x%p,0x%x, lhdr 0x%p, len %u, " 141844830d8fSVarun Prakash "pdu_len_ddp %u, status %u.\n", 141944830d8fSVarun Prakash csk, csk->state, csk->flags, skb, ddpvld, csk->skb_ulp_lhdr, 142044830d8fSVarun Prakash ntohs(rpl->len), pdu_len_ddp, rpl->status); 142144830d8fSVarun Prakash 142244830d8fSVarun Prakash spin_lock_bh(&csk->lock); 142344830d8fSVarun Prakash 142444830d8fSVarun Prakash if (unlikely(csk->state >= CTP_PASSIVE_CLOSE)) { 142544830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 142644830d8fSVarun Prakash "csk 0x%p,%u,0x%lx,%u, bad state.\n", 142744830d8fSVarun Prakash csk, csk->state, csk->flags, csk->tid); 142844830d8fSVarun Prakash 142944830d8fSVarun Prakash if (csk->state != CTP_ABORTING) 143044830d8fSVarun Prakash goto abort_conn; 143144830d8fSVarun Prakash else 143244830d8fSVarun Prakash goto discard; 143344830d8fSVarun Prakash } 143444830d8fSVarun Prakash 143544830d8fSVarun Prakash cxgbi_skcb_tcp_seq(skb) = seq; 143644830d8fSVarun Prakash cxgbi_skcb_flags(skb) = 0; 143744830d8fSVarun Prakash cxgbi_skcb_rx_pdulen(skb) = 0; 143844830d8fSVarun Prakash 143944830d8fSVarun Prakash skb_reset_transport_header(skb); 144044830d8fSVarun Prakash __skb_pull(skb, sizeof(*rpl)); 144144830d8fSVarun Prakash __pskb_trim(skb, be16_to_cpu(rpl->len)); 144244830d8fSVarun Prakash 144344830d8fSVarun Prakash csk->rcv_nxt = seq + pdu_len_ddp; 144444830d8fSVarun Prakash 144544830d8fSVarun Prakash if (csk->skb_ulp_lhdr) { 144644830d8fSVarun Prakash data_skb = skb_peek(&csk->receive_queue); 144744830d8fSVarun Prakash if (!data_skb || 144844830d8fSVarun Prakash !cxgbi_skcb_test_flag(data_skb, SKCBF_RX_DATA)) { 144944830d8fSVarun Prakash pr_err("Error! freelist data not found 0x%p, tid %u\n", 145044830d8fSVarun Prakash data_skb, tid); 145144830d8fSVarun Prakash 145244830d8fSVarun Prakash goto abort_conn; 145344830d8fSVarun Prakash } 145444830d8fSVarun Prakash __skb_unlink(data_skb, &csk->receive_queue); 145544830d8fSVarun Prakash 145644830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_DATA); 145744830d8fSVarun Prakash 145844830d8fSVarun Prakash __skb_queue_tail(&csk->receive_queue, skb); 145944830d8fSVarun Prakash __skb_queue_tail(&csk->receive_queue, data_skb); 146044830d8fSVarun Prakash } else { 146144830d8fSVarun Prakash __skb_queue_tail(&csk->receive_queue, skb); 146244830d8fSVarun Prakash } 146344830d8fSVarun Prakash 146444830d8fSVarun Prakash csk->skb_ulp_lhdr = NULL; 146544830d8fSVarun Prakash 146644830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_HDR); 146744830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_STATUS); 146844830d8fSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_RX_ISCSI_COMPL); 146944830d8fSVarun Prakash cxgbi_skcb_rx_ddigest(skb) = be32_to_cpu(rpl->ulp_crc); 147044830d8fSVarun Prakash 147144830d8fSVarun Prakash cxgb4i_process_ddpvld(csk, skb, ddpvld); 147244830d8fSVarun Prakash 147344830d8fSVarun Prakash log_debug(1 << CXGBI_DBG_PDU_RX, "csk 0x%p, skb 0x%p, f 0x%lx.\n", 147444830d8fSVarun Prakash csk, skb, cxgbi_skcb_flags(skb)); 147544830d8fSVarun Prakash 147644830d8fSVarun Prakash cxgbi_conn_pdu_ready(csk); 147744830d8fSVarun Prakash spin_unlock_bh(&csk->lock); 147844830d8fSVarun Prakash 147944830d8fSVarun Prakash return; 148044830d8fSVarun Prakash 148144830d8fSVarun Prakash abort_conn: 148244830d8fSVarun Prakash send_abort_req(csk); 148344830d8fSVarun Prakash discard: 148444830d8fSVarun Prakash spin_unlock_bh(&csk->lock); 148544830d8fSVarun Prakash rel_skb: 148644830d8fSVarun Prakash __kfree_skb(skb); 148744830d8fSVarun Prakash } 148844830d8fSVarun Prakash 14897b36b6e0Skxie@chelsio.com static void do_fw4_ack(struct cxgbi_device *cdev, struct sk_buff *skb) 14907b36b6e0Skxie@chelsio.com { 14917b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 14927b36b6e0Skxie@chelsio.com struct cpl_fw4_ack *rpl = (struct cpl_fw4_ack *)skb->data; 14937b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(rpl); 14947b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 14957b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 14967b36b6e0Skxie@chelsio.com 14977b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 14987b36b6e0Skxie@chelsio.com if (unlikely(!csk)) 14997b36b6e0Skxie@chelsio.com pr_err("can't find connection for tid %u.\n", tid); 15007b36b6e0Skxie@chelsio.com else { 15017b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 15027b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u.\n", 15037b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 15047b36b6e0Skxie@chelsio.com cxgbi_sock_rcv_wr_ack(csk, rpl->credits, ntohl(rpl->snd_una), 15057b36b6e0Skxie@chelsio.com rpl->seq_vld); 15067b36b6e0Skxie@chelsio.com } 15077b36b6e0Skxie@chelsio.com __kfree_skb(skb); 15087b36b6e0Skxie@chelsio.com } 15097b36b6e0Skxie@chelsio.com 15107b36b6e0Skxie@chelsio.com static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) 15117b36b6e0Skxie@chelsio.com { 15127b36b6e0Skxie@chelsio.com struct cpl_set_tcb_rpl *rpl = (struct cpl_set_tcb_rpl *)skb->data; 15137b36b6e0Skxie@chelsio.com unsigned int tid = GET_TID(rpl); 15147b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 15157b36b6e0Skxie@chelsio.com struct tid_info *t = lldi->tids; 15167b36b6e0Skxie@chelsio.com struct cxgbi_sock *csk; 15177b36b6e0Skxie@chelsio.com 15187b36b6e0Skxie@chelsio.com csk = lookup_tid(t, tid); 15197b36b6e0Skxie@chelsio.com if (!csk) 15207b36b6e0Skxie@chelsio.com pr_err("can't find conn. for tid %u.\n", tid); 15217b36b6e0Skxie@chelsio.com 15227b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 15237b36b6e0Skxie@chelsio.com "csk 0x%p,%u,%lx,%u, status 0x%x.\n", 15247b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid, rpl->status); 15257b36b6e0Skxie@chelsio.com 15267b36b6e0Skxie@chelsio.com if (rpl->status != CPL_ERR_NONE) 15277b36b6e0Skxie@chelsio.com pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", 15287b36b6e0Skxie@chelsio.com csk, tid, rpl->status); 15297b36b6e0Skxie@chelsio.com 15307b36b6e0Skxie@chelsio.com __kfree_skb(skb); 15317b36b6e0Skxie@chelsio.com } 15327b36b6e0Skxie@chelsio.com 15337b36b6e0Skxie@chelsio.com static int alloc_cpls(struct cxgbi_sock *csk) 15347b36b6e0Skxie@chelsio.com { 153524d3f95aSkxie@chelsio.com csk->cpl_close = alloc_wr(sizeof(struct cpl_close_con_req), 153624d3f95aSkxie@chelsio.com 0, GFP_KERNEL); 15377b36b6e0Skxie@chelsio.com if (!csk->cpl_close) 15387b36b6e0Skxie@chelsio.com return -ENOMEM; 15397b36b6e0Skxie@chelsio.com 154024d3f95aSkxie@chelsio.com csk->cpl_abort_req = alloc_wr(sizeof(struct cpl_abort_req), 154124d3f95aSkxie@chelsio.com 0, GFP_KERNEL); 15427b36b6e0Skxie@chelsio.com if (!csk->cpl_abort_req) 15437b36b6e0Skxie@chelsio.com goto free_cpls; 15447b36b6e0Skxie@chelsio.com 154524d3f95aSkxie@chelsio.com csk->cpl_abort_rpl = alloc_wr(sizeof(struct cpl_abort_rpl), 154624d3f95aSkxie@chelsio.com 0, GFP_KERNEL); 15477b36b6e0Skxie@chelsio.com if (!csk->cpl_abort_rpl) 15487b36b6e0Skxie@chelsio.com goto free_cpls; 15497b36b6e0Skxie@chelsio.com return 0; 15507b36b6e0Skxie@chelsio.com 15517b36b6e0Skxie@chelsio.com free_cpls: 15527b36b6e0Skxie@chelsio.com cxgbi_sock_free_cpl_skbs(csk); 15537b36b6e0Skxie@chelsio.com return -ENOMEM; 15547b36b6e0Skxie@chelsio.com } 15557b36b6e0Skxie@chelsio.com 15567b36b6e0Skxie@chelsio.com static inline void l2t_put(struct cxgbi_sock *csk) 15577b36b6e0Skxie@chelsio.com { 15587b36b6e0Skxie@chelsio.com if (csk->l2t) { 15597b36b6e0Skxie@chelsio.com cxgb4_l2t_release(csk->l2t); 15607b36b6e0Skxie@chelsio.com csk->l2t = NULL; 15617b36b6e0Skxie@chelsio.com cxgbi_sock_put(csk); 15627b36b6e0Skxie@chelsio.com } 15637b36b6e0Skxie@chelsio.com } 15647b36b6e0Skxie@chelsio.com 15657b36b6e0Skxie@chelsio.com static void release_offload_resources(struct cxgbi_sock *csk) 15667b36b6e0Skxie@chelsio.com { 15677b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi; 1568211a84e3SAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1569211a84e3SAnish Bhatt struct net_device *ndev = csk->cdev->ports[csk->port_id]; 1570211a84e3SAnish Bhatt #endif 15717b36b6e0Skxie@chelsio.com 15727b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 15737b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u.\n", 15747b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 15757b36b6e0Skxie@chelsio.com 15767b36b6e0Skxie@chelsio.com cxgbi_sock_free_cpl_skbs(csk); 15777b36b6e0Skxie@chelsio.com if (csk->wr_cred != csk->wr_max_cred) { 15787b36b6e0Skxie@chelsio.com cxgbi_sock_purge_wr_queue(csk); 15797b36b6e0Skxie@chelsio.com cxgbi_sock_reset_wr_list(csk); 15807b36b6e0Skxie@chelsio.com } 15817b36b6e0Skxie@chelsio.com 15827b36b6e0Skxie@chelsio.com l2t_put(csk); 1583211a84e3SAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1584211a84e3SAnish Bhatt if (csk->csk_family == AF_INET6) 1585211a84e3SAnish Bhatt cxgb4_clip_release(ndev, 1586211a84e3SAnish Bhatt (const u32 *)&csk->saddr6.sin6_addr, 1); 1587211a84e3SAnish Bhatt #endif 1588211a84e3SAnish Bhatt 15897b36b6e0Skxie@chelsio.com if (cxgbi_sock_flag(csk, CTPF_HAS_ATID)) 15907b36b6e0Skxie@chelsio.com free_atid(csk); 15917b36b6e0Skxie@chelsio.com else if (cxgbi_sock_flag(csk, CTPF_HAS_TID)) { 15927b36b6e0Skxie@chelsio.com lldi = cxgbi_cdev_priv(csk->cdev); 15937b36b6e0Skxie@chelsio.com cxgb4_remove_tid(lldi->tids, 0, csk->tid); 15947b36b6e0Skxie@chelsio.com cxgbi_sock_clear_flag(csk, CTPF_HAS_TID); 15957b36b6e0Skxie@chelsio.com cxgbi_sock_put(csk); 15967b36b6e0Skxie@chelsio.com } 15977b36b6e0Skxie@chelsio.com csk->dst = NULL; 15987b36b6e0Skxie@chelsio.com csk->cdev = NULL; 15997b36b6e0Skxie@chelsio.com } 16007b36b6e0Skxie@chelsio.com 16017b36b6e0Skxie@chelsio.com static int init_act_open(struct cxgbi_sock *csk) 16027b36b6e0Skxie@chelsio.com { 16037b36b6e0Skxie@chelsio.com struct cxgbi_device *cdev = csk->cdev; 16047b36b6e0Skxie@chelsio.com struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 16057b36b6e0Skxie@chelsio.com struct net_device *ndev = cdev->ports[csk->port_id]; 16067b36b6e0Skxie@chelsio.com struct sk_buff *skb = NULL; 1607759a0cc5SAnish Bhatt struct neighbour *n = NULL; 1608759a0cc5SAnish Bhatt void *daddr; 16097b36b6e0Skxie@chelsio.com unsigned int step; 1610759a0cc5SAnish Bhatt unsigned int size, size6; 161181daf10cSKaren Xie unsigned int linkspeed; 161281daf10cSKaren Xie unsigned int rcv_winf, snd_winf; 16137b36b6e0Skxie@chelsio.com 16147b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 16157b36b6e0Skxie@chelsio.com "csk 0x%p,%u,0x%lx,%u.\n", 16167b36b6e0Skxie@chelsio.com csk, csk->state, csk->flags, csk->tid); 16177b36b6e0Skxie@chelsio.com 1618759a0cc5SAnish Bhatt if (csk->csk_family == AF_INET) 1619759a0cc5SAnish Bhatt daddr = &csk->daddr.sin_addr.s_addr; 1620e81fbf6cSAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1621e81fbf6cSAnish Bhatt else if (csk->csk_family == AF_INET6) 1622759a0cc5SAnish Bhatt daddr = &csk->daddr6.sin6_addr; 1623e81fbf6cSAnish Bhatt #endif 1624e81fbf6cSAnish Bhatt else { 1625e81fbf6cSAnish Bhatt pr_err("address family 0x%x not supported\n", csk->csk_family); 1626e81fbf6cSAnish Bhatt goto rel_resource; 1627e81fbf6cSAnish Bhatt } 1628759a0cc5SAnish Bhatt 1629759a0cc5SAnish Bhatt n = dst_neigh_lookup(csk->dst, daddr); 1630759a0cc5SAnish Bhatt 1631759a0cc5SAnish Bhatt if (!n) { 1632759a0cc5SAnish Bhatt pr_err("%s, can't get neighbour of csk->dst.\n", ndev->name); 1633759a0cc5SAnish Bhatt goto rel_resource; 1634759a0cc5SAnish Bhatt } 1635759a0cc5SAnish Bhatt 16367b36b6e0Skxie@chelsio.com csk->atid = cxgb4_alloc_atid(lldi->tids, csk); 16377b36b6e0Skxie@chelsio.com if (csk->atid < 0) { 16387b36b6e0Skxie@chelsio.com pr_err("%s, NO atid available.\n", ndev->name); 1639338be072SQuentin Lambert goto rel_resource_without_clip; 16407b36b6e0Skxie@chelsio.com } 16417b36b6e0Skxie@chelsio.com cxgbi_sock_set_flag(csk, CTPF_HAS_ATID); 16427b36b6e0Skxie@chelsio.com cxgbi_sock_get(csk); 16437b36b6e0Skxie@chelsio.com 164451e059bdSDavid Miller csk->l2t = cxgb4_l2t_get(lldi->l2t, n, ndev, 0); 16457b36b6e0Skxie@chelsio.com if (!csk->l2t) { 16467b36b6e0Skxie@chelsio.com pr_err("%s, cannot alloc l2t.\n", ndev->name); 1647211a84e3SAnish Bhatt goto rel_resource_without_clip; 16487b36b6e0Skxie@chelsio.com } 16497b36b6e0Skxie@chelsio.com cxgbi_sock_get(csk); 16507b36b6e0Skxie@chelsio.com 1651211a84e3SAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1652211a84e3SAnish Bhatt if (csk->csk_family == AF_INET6) 1653211a84e3SAnish Bhatt cxgb4_clip_get(ndev, (const u32 *)&csk->saddr6.sin6_addr, 1); 1654211a84e3SAnish Bhatt #endif 1655211a84e3SAnish Bhatt 1656586be7cbSVarun Prakash if (is_t4(lldi->adapter_type)) { 1657759a0cc5SAnish Bhatt size = sizeof(struct cpl_act_open_req); 1658759a0cc5SAnish Bhatt size6 = sizeof(struct cpl_act_open_req6); 1659586be7cbSVarun Prakash } else if (is_t5(lldi->adapter_type)) { 1660759a0cc5SAnish Bhatt size = sizeof(struct cpl_t5_act_open_req); 1661759a0cc5SAnish Bhatt size6 = sizeof(struct cpl_t5_act_open_req6); 1662586be7cbSVarun Prakash } else { 1663586be7cbSVarun Prakash size = sizeof(struct cpl_t6_act_open_req); 1664586be7cbSVarun Prakash size6 = sizeof(struct cpl_t6_act_open_req6); 1665759a0cc5SAnish Bhatt } 1666759a0cc5SAnish Bhatt 1667759a0cc5SAnish Bhatt if (csk->csk_family == AF_INET) 1668759a0cc5SAnish Bhatt skb = alloc_wr(size, 0, GFP_NOIO); 1669f42bb57cSAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1670759a0cc5SAnish Bhatt else 1671759a0cc5SAnish Bhatt skb = alloc_wr(size6, 0, GFP_NOIO); 1672f42bb57cSAnish Bhatt #endif 1673759a0cc5SAnish Bhatt 16747b36b6e0Skxie@chelsio.com if (!skb) 16757b36b6e0Skxie@chelsio.com goto rel_resource; 16767b36b6e0Skxie@chelsio.com skb->sk = (struct sock *)csk; 16777b36b6e0Skxie@chelsio.com t4_set_arp_err_handler(skb, csk, cxgbi_sock_act_open_req_arp_failure); 16787b36b6e0Skxie@chelsio.com 16797b36b6e0Skxie@chelsio.com if (!csk->mtu) 16807b36b6e0Skxie@chelsio.com csk->mtu = dst_mtu(csk->dst); 16817b36b6e0Skxie@chelsio.com cxgb4_best_mtu(lldi->mtus, csk->mtu, &csk->mss_idx); 16827b36b6e0Skxie@chelsio.com csk->tx_chan = cxgb4_port_chan(ndev); 1683e0eed8abSVarun Prakash csk->smac_idx = cxgb4_tp_smt_idx(lldi->adapter_type, 1684e0eed8abSVarun Prakash cxgb4_port_viid(ndev)); 16857b36b6e0Skxie@chelsio.com step = lldi->ntxq / lldi->nchan; 16867b36b6e0Skxie@chelsio.com csk->txq_idx = cxgb4_port_idx(ndev) * step; 16877b36b6e0Skxie@chelsio.com step = lldi->nrxq / lldi->nchan; 16887b36b6e0Skxie@chelsio.com csk->rss_qid = lldi->rxq_ids[cxgb4_port_idx(ndev) * step]; 168981daf10cSKaren Xie linkspeed = ((struct port_info *)netdev_priv(ndev))->link_cfg.speed; 169081daf10cSKaren Xie csk->snd_win = cxgb4i_snd_win; 169181daf10cSKaren Xie csk->rcv_win = cxgb4i_rcv_win; 169281daf10cSKaren Xie if (cxgb4i_rcv_win <= 0) { 169381daf10cSKaren Xie csk->rcv_win = CXGB4I_DEFAULT_10G_RCV_WIN; 169481daf10cSKaren Xie rcv_winf = linkspeed / SPEED_10000; 169581daf10cSKaren Xie if (rcv_winf) 169681daf10cSKaren Xie csk->rcv_win *= rcv_winf; 169781daf10cSKaren Xie } 169881daf10cSKaren Xie if (cxgb4i_snd_win <= 0) { 169981daf10cSKaren Xie csk->snd_win = CXGB4I_DEFAULT_10G_SND_WIN; 170081daf10cSKaren Xie snd_winf = linkspeed / SPEED_10000; 170181daf10cSKaren Xie if (snd_winf) 170281daf10cSKaren Xie csk->snd_win *= snd_winf; 170381daf10cSKaren Xie } 1704759a0cc5SAnish Bhatt csk->wr_cred = lldi->wr_cred - 1705759a0cc5SAnish Bhatt DIV_ROUND_UP(sizeof(struct cpl_abort_req), 16); 1706759a0cc5SAnish Bhatt csk->wr_max_cred = csk->wr_cred; 17077b36b6e0Skxie@chelsio.com csk->wr_una_cred = 0; 17087b36b6e0Skxie@chelsio.com cxgbi_sock_reset_wr_list(csk); 17097b36b6e0Skxie@chelsio.com csk->err = 0; 17107b36b6e0Skxie@chelsio.com 1711759a0cc5SAnish Bhatt pr_info_ipaddr("csk 0x%p,%u,0x%lx,%u,%u,%u, mtu %u,%u, smac %u.\n", 1712759a0cc5SAnish Bhatt (&csk->saddr), (&csk->daddr), csk, csk->state, 1713759a0cc5SAnish Bhatt csk->flags, csk->tx_chan, csk->txq_idx, csk->rss_qid, 1714759a0cc5SAnish Bhatt csk->mtu, csk->mss_idx, csk->smac_idx); 1715759a0cc5SAnish Bhatt 1716759a0cc5SAnish Bhatt /* must wait for either a act_open_rpl or act_open_establish */ 17171fe1fdb0SVarun Prakash if (!try_module_get(cdev->owner)) { 17181fe1fdb0SVarun Prakash pr_err("%s, try_module_get failed.\n", ndev->name); 17191fe1fdb0SVarun Prakash goto rel_resource; 17201fe1fdb0SVarun Prakash } 17211fe1fdb0SVarun Prakash 17227b36b6e0Skxie@chelsio.com cxgbi_sock_set_state(csk, CTP_ACTIVE_OPEN); 1723759a0cc5SAnish Bhatt if (csk->csk_family == AF_INET) 17247b36b6e0Skxie@chelsio.com send_act_open_req(csk, skb, csk->l2t); 1725f42bb57cSAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1726759a0cc5SAnish Bhatt else 1727759a0cc5SAnish Bhatt send_act_open_req6(csk, skb, csk->l2t); 1728f42bb57cSAnish Bhatt #endif 1729c4737377SDavid S. Miller neigh_release(n); 1730759a0cc5SAnish Bhatt 17317b36b6e0Skxie@chelsio.com return 0; 17327b36b6e0Skxie@chelsio.com 17337b36b6e0Skxie@chelsio.com rel_resource: 1734211a84e3SAnish Bhatt #if IS_ENABLED(CONFIG_IPV6) 1735211a84e3SAnish Bhatt if (csk->csk_family == AF_INET6) 1736211a84e3SAnish Bhatt cxgb4_clip_release(ndev, 1737211a84e3SAnish Bhatt (const u32 *)&csk->saddr6.sin6_addr, 1); 1738211a84e3SAnish Bhatt #endif 1739211a84e3SAnish Bhatt rel_resource_without_clip: 1740c4737377SDavid S. Miller if (n) 1741c4737377SDavid S. Miller neigh_release(n); 17427b36b6e0Skxie@chelsio.com if (skb) 17437b36b6e0Skxie@chelsio.com __kfree_skb(skb); 17447b36b6e0Skxie@chelsio.com return -EINVAL; 17457b36b6e0Skxie@chelsio.com } 17467b36b6e0Skxie@chelsio.com 17474665bdd5SVarun Prakash static cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { 17487b36b6e0Skxie@chelsio.com [CPL_ACT_ESTABLISH] = do_act_establish, 17497b36b6e0Skxie@chelsio.com [CPL_ACT_OPEN_RPL] = do_act_open_rpl, 17507b36b6e0Skxie@chelsio.com [CPL_PEER_CLOSE] = do_peer_close, 17517b36b6e0Skxie@chelsio.com [CPL_ABORT_REQ_RSS] = do_abort_req_rss, 17527b36b6e0Skxie@chelsio.com [CPL_ABORT_RPL_RSS] = do_abort_rpl_rss, 17537b36b6e0Skxie@chelsio.com [CPL_CLOSE_CON_RPL] = do_close_con_rpl, 17547b36b6e0Skxie@chelsio.com [CPL_FW4_ACK] = do_fw4_ack, 17557b36b6e0Skxie@chelsio.com [CPL_ISCSI_HDR] = do_rx_iscsi_hdr, 175644830d8fSVarun Prakash [CPL_ISCSI_DATA] = do_rx_iscsi_data, 17577b36b6e0Skxie@chelsio.com [CPL_SET_TCB_RPL] = do_set_tcb_rpl, 17587b36b6e0Skxie@chelsio.com [CPL_RX_DATA_DDP] = do_rx_data_ddp, 17593bd3e8bfSKaren Xie [CPL_RX_ISCSI_DDP] = do_rx_data_ddp, 176044830d8fSVarun Prakash [CPL_RX_ISCSI_CMP] = do_rx_iscsi_cmp, 1761f7bcd2e1SKaren Xie [CPL_RX_DATA] = do_rx_data, 17627b36b6e0Skxie@chelsio.com }; 17637b36b6e0Skxie@chelsio.com 17644665bdd5SVarun Prakash static int cxgb4i_ofld_init(struct cxgbi_device *cdev) 17657b36b6e0Skxie@chelsio.com { 17667b36b6e0Skxie@chelsio.com int rc; 17677b36b6e0Skxie@chelsio.com 17687b36b6e0Skxie@chelsio.com if (cxgb4i_max_connect > CXGB4I_MAX_CONN) 17697b36b6e0Skxie@chelsio.com cxgb4i_max_connect = CXGB4I_MAX_CONN; 17707b36b6e0Skxie@chelsio.com 17717b36b6e0Skxie@chelsio.com rc = cxgbi_device_portmap_create(cdev, cxgb4i_sport_base, 17727b36b6e0Skxie@chelsio.com cxgb4i_max_connect); 17737b36b6e0Skxie@chelsio.com if (rc < 0) 17747b36b6e0Skxie@chelsio.com return rc; 17757b36b6e0Skxie@chelsio.com 17767b36b6e0Skxie@chelsio.com cdev->csk_release_offload_resources = release_offload_resources; 17777b36b6e0Skxie@chelsio.com cdev->csk_push_tx_frames = push_tx_frames; 17787b36b6e0Skxie@chelsio.com cdev->csk_send_abort_req = send_abort_req; 17797b36b6e0Skxie@chelsio.com cdev->csk_send_close_req = send_close_req; 17807b36b6e0Skxie@chelsio.com cdev->csk_send_rx_credits = send_rx_credits; 17817b36b6e0Skxie@chelsio.com cdev->csk_alloc_cpls = alloc_cpls; 17827b36b6e0Skxie@chelsio.com cdev->csk_init_act_open = init_act_open; 17837b36b6e0Skxie@chelsio.com 17847b36b6e0Skxie@chelsio.com pr_info("cdev 0x%p, offload up, added.\n", cdev); 17857b36b6e0Skxie@chelsio.com return 0; 17867b36b6e0Skxie@chelsio.com } 17877b36b6e0Skxie@chelsio.com 178871f7a00bSVarun Prakash static inline void 178971f7a00bSVarun Prakash ulp_mem_io_set_hdr(struct cxgbi_device *cdev, 179071f7a00bSVarun Prakash struct ulp_mem_io *req, 179171f7a00bSVarun Prakash unsigned int wr_len, unsigned int dlen, 179271f7a00bSVarun Prakash unsigned int pm_addr, 179371f7a00bSVarun Prakash int tid) 179471f7a00bSVarun Prakash { 179571f7a00bSVarun Prakash struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 179671f7a00bSVarun Prakash struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1); 179771f7a00bSVarun Prakash 179871f7a00bSVarun Prakash INIT_ULPTX_WR(req, wr_len, 0, tid); 179971f7a00bSVarun Prakash req->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | 180071f7a00bSVarun Prakash FW_WR_ATOMIC_V(0)); 180171f7a00bSVarun Prakash req->cmd = htonl(ULPTX_CMD_V(ULP_TX_MEM_WRITE) | 180271f7a00bSVarun Prakash ULP_MEMIO_ORDER_V(is_t4(lldi->adapter_type)) | 180371f7a00bSVarun Prakash T5_ULP_MEMIO_IMM_V(!is_t4(lldi->adapter_type))); 180471f7a00bSVarun Prakash req->dlen = htonl(ULP_MEMIO_DATA_LEN_V(dlen >> 5)); 180571f7a00bSVarun Prakash req->lock_addr = htonl(ULP_MEMIO_ADDR_V(pm_addr >> 5)); 180671f7a00bSVarun Prakash req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16)); 180771f7a00bSVarun Prakash 180871f7a00bSVarun Prakash idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); 180971f7a00bSVarun Prakash idata->len = htonl(dlen); 181071f7a00bSVarun Prakash } 181171f7a00bSVarun Prakash 181271f7a00bSVarun Prakash static struct sk_buff * 181371f7a00bSVarun Prakash ddp_ppod_init_idata(struct cxgbi_device *cdev, 181471f7a00bSVarun Prakash struct cxgbi_ppm *ppm, 181571f7a00bSVarun Prakash unsigned int idx, unsigned int npods, 181671f7a00bSVarun Prakash unsigned int tid) 181771f7a00bSVarun Prakash { 181871f7a00bSVarun Prakash unsigned int pm_addr = (idx << PPOD_SIZE_SHIFT) + ppm->llimit; 181971f7a00bSVarun Prakash unsigned int dlen = npods << PPOD_SIZE_SHIFT; 182071f7a00bSVarun Prakash unsigned int wr_len = roundup(sizeof(struct ulp_mem_io) + 182171f7a00bSVarun Prakash sizeof(struct ulptx_idata) + dlen, 16); 182271f7a00bSVarun Prakash struct sk_buff *skb = alloc_wr(wr_len, 0, GFP_ATOMIC); 182371f7a00bSVarun Prakash 182471f7a00bSVarun Prakash if (!skb) { 182571f7a00bSVarun Prakash pr_err("%s: %s idx %u, npods %u, OOM.\n", 182671f7a00bSVarun Prakash __func__, ppm->ndev->name, idx, npods); 182771f7a00bSVarun Prakash return NULL; 182871f7a00bSVarun Prakash } 182971f7a00bSVarun Prakash 183071f7a00bSVarun Prakash ulp_mem_io_set_hdr(cdev, (struct ulp_mem_io *)skb->head, wr_len, dlen, 183171f7a00bSVarun Prakash pm_addr, tid); 183271f7a00bSVarun Prakash 183371f7a00bSVarun Prakash return skb; 183471f7a00bSVarun Prakash } 183571f7a00bSVarun Prakash 183671f7a00bSVarun Prakash static int ddp_ppod_write_idata(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, 183771f7a00bSVarun Prakash struct cxgbi_task_tag_info *ttinfo, 183871f7a00bSVarun Prakash unsigned int idx, unsigned int npods, 183971f7a00bSVarun Prakash struct scatterlist **sg_pp, 184071f7a00bSVarun Prakash unsigned int *sg_off) 184171f7a00bSVarun Prakash { 184271f7a00bSVarun Prakash struct cxgbi_device *cdev = csk->cdev; 184371f7a00bSVarun Prakash struct sk_buff *skb = ddp_ppod_init_idata(cdev, ppm, idx, npods, 184471f7a00bSVarun Prakash csk->tid); 184571f7a00bSVarun Prakash struct ulp_mem_io *req; 184671f7a00bSVarun Prakash struct ulptx_idata *idata; 184771f7a00bSVarun Prakash struct cxgbi_pagepod *ppod; 184871f7a00bSVarun Prakash int i; 184971f7a00bSVarun Prakash 185071f7a00bSVarun Prakash if (!skb) 185171f7a00bSVarun Prakash return -ENOMEM; 185271f7a00bSVarun Prakash 185371f7a00bSVarun Prakash req = (struct ulp_mem_io *)skb->head; 185471f7a00bSVarun Prakash idata = (struct ulptx_idata *)(req + 1); 185571f7a00bSVarun Prakash ppod = (struct cxgbi_pagepod *)(idata + 1); 185671f7a00bSVarun Prakash 185771f7a00bSVarun Prakash for (i = 0; i < npods; i++, ppod++) 185871f7a00bSVarun Prakash cxgbi_ddp_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); 185971f7a00bSVarun Prakash 186071f7a00bSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_TX_MEM_WRITE); 186171f7a00bSVarun Prakash cxgbi_skcb_set_flag(skb, SKCBF_TX_FLAG_COMPL); 186271f7a00bSVarun Prakash set_wr_txq(skb, CPL_PRIORITY_DATA, csk->port_id); 186371f7a00bSVarun Prakash 186471f7a00bSVarun Prakash spin_lock_bh(&csk->lock); 186571f7a00bSVarun Prakash cxgbi_sock_skb_entail(csk, skb); 186671f7a00bSVarun Prakash spin_unlock_bh(&csk->lock); 186771f7a00bSVarun Prakash 186871f7a00bSVarun Prakash return 0; 186971f7a00bSVarun Prakash } 187071f7a00bSVarun Prakash 187171f7a00bSVarun Prakash static int ddp_set_map(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, 187271f7a00bSVarun Prakash struct cxgbi_task_tag_info *ttinfo) 187371f7a00bSVarun Prakash { 187471f7a00bSVarun Prakash unsigned int pidx = ttinfo->idx; 187571f7a00bSVarun Prakash unsigned int npods = ttinfo->npods; 187671f7a00bSVarun Prakash unsigned int i, cnt; 187771f7a00bSVarun Prakash int err = 0; 187871f7a00bSVarun Prakash struct scatterlist *sg = ttinfo->sgl; 187971f7a00bSVarun Prakash unsigned int offset = 0; 188071f7a00bSVarun Prakash 188171f7a00bSVarun Prakash ttinfo->cid = csk->port_id; 188271f7a00bSVarun Prakash 188371f7a00bSVarun Prakash for (i = 0; i < npods; i += cnt, pidx += cnt) { 188471f7a00bSVarun Prakash cnt = npods - i; 188571f7a00bSVarun Prakash 188671f7a00bSVarun Prakash if (cnt > ULPMEM_IDATA_MAX_NPPODS) 188771f7a00bSVarun Prakash cnt = ULPMEM_IDATA_MAX_NPPODS; 188871f7a00bSVarun Prakash err = ddp_ppod_write_idata(ppm, csk, ttinfo, pidx, cnt, 188971f7a00bSVarun Prakash &sg, &offset); 189071f7a00bSVarun Prakash if (err < 0) 189171f7a00bSVarun Prakash break; 189271f7a00bSVarun Prakash } 189371f7a00bSVarun Prakash 189471f7a00bSVarun Prakash return err; 189571f7a00bSVarun Prakash } 189671f7a00bSVarun Prakash 18977b36b6e0Skxie@chelsio.com static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, 18987b36b6e0Skxie@chelsio.com int pg_idx, bool reply) 18997b36b6e0Skxie@chelsio.com { 19007b36b6e0Skxie@chelsio.com struct sk_buff *skb; 19017b36b6e0Skxie@chelsio.com struct cpl_set_tcb_field *req; 19027b36b6e0Skxie@chelsio.com 1903e27d6169Skxie@chelsio.com if (!pg_idx || pg_idx >= DDP_PGIDX_MAX) 19047b36b6e0Skxie@chelsio.com return 0; 19057b36b6e0Skxie@chelsio.com 190624d3f95aSkxie@chelsio.com skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); 19077b36b6e0Skxie@chelsio.com if (!skb) 19087b36b6e0Skxie@chelsio.com return -ENOMEM; 19097b36b6e0Skxie@chelsio.com 1910e27d6169Skxie@chelsio.com /* set up ulp page size */ 19117b36b6e0Skxie@chelsio.com req = (struct cpl_set_tcb_field *)skb->head; 19127b36b6e0Skxie@chelsio.com INIT_TP_WR(req, csk->tid); 19137b36b6e0Skxie@chelsio.com OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); 1914bdc590b9SHariprasad Shenai req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); 1915e27d6169Skxie@chelsio.com req->word_cookie = htons(0); 1916e27d6169Skxie@chelsio.com req->mask = cpu_to_be64(0x3 << 8); 1917e27d6169Skxie@chelsio.com req->val = cpu_to_be64(pg_idx << 8); 19187b36b6e0Skxie@chelsio.com set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); 19197b36b6e0Skxie@chelsio.com 19207b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 19217b36b6e0Skxie@chelsio.com "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); 19227b36b6e0Skxie@chelsio.com 19237b36b6e0Skxie@chelsio.com cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); 19247b36b6e0Skxie@chelsio.com return 0; 19257b36b6e0Skxie@chelsio.com } 19267b36b6e0Skxie@chelsio.com 19277b36b6e0Skxie@chelsio.com static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, 19287b36b6e0Skxie@chelsio.com int hcrc, int dcrc, int reply) 19297b36b6e0Skxie@chelsio.com { 19307b36b6e0Skxie@chelsio.com struct sk_buff *skb; 19317b36b6e0Skxie@chelsio.com struct cpl_set_tcb_field *req; 19327b36b6e0Skxie@chelsio.com 1933e27d6169Skxie@chelsio.com if (!hcrc && !dcrc) 1934e27d6169Skxie@chelsio.com return 0; 19357b36b6e0Skxie@chelsio.com 193624d3f95aSkxie@chelsio.com skb = alloc_wr(sizeof(*req), 0, GFP_KERNEL); 19377b36b6e0Skxie@chelsio.com if (!skb) 19387b36b6e0Skxie@chelsio.com return -ENOMEM; 19397b36b6e0Skxie@chelsio.com 19407b36b6e0Skxie@chelsio.com csk->hcrc_len = (hcrc ? 4 : 0); 19417b36b6e0Skxie@chelsio.com csk->dcrc_len = (dcrc ? 4 : 0); 1942e27d6169Skxie@chelsio.com /* set up ulp submode */ 19437b36b6e0Skxie@chelsio.com req = (struct cpl_set_tcb_field *)skb->head; 19447b36b6e0Skxie@chelsio.com INIT_TP_WR(req, tid); 19457b36b6e0Skxie@chelsio.com OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); 1946bdc590b9SHariprasad Shenai req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); 1947e27d6169Skxie@chelsio.com req->word_cookie = htons(0); 1948e27d6169Skxie@chelsio.com req->mask = cpu_to_be64(0x3 << 4); 1949e27d6169Skxie@chelsio.com req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | 1950e27d6169Skxie@chelsio.com (dcrc ? ULP_CRC_DATA : 0)) << 4); 19517b36b6e0Skxie@chelsio.com set_wr_txq(skb, CPL_PRIORITY_CONTROL, csk->port_id); 19527b36b6e0Skxie@chelsio.com 19537b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, 19547b36b6e0Skxie@chelsio.com "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); 19557b36b6e0Skxie@chelsio.com 19567b36b6e0Skxie@chelsio.com cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); 19577b36b6e0Skxie@chelsio.com return 0; 19587b36b6e0Skxie@chelsio.com } 19597b36b6e0Skxie@chelsio.com 196071f7a00bSVarun Prakash static struct cxgbi_ppm *cdev2ppm(struct cxgbi_device *cdev) 196171f7a00bSVarun Prakash { 196271f7a00bSVarun Prakash return (struct cxgbi_ppm *)(*((struct cxgb4_lld_info *) 196371f7a00bSVarun Prakash (cxgbi_cdev_priv(cdev)))->iscsi_ppm); 196471f7a00bSVarun Prakash } 196571f7a00bSVarun Prakash 19667b36b6e0Skxie@chelsio.com static int cxgb4i_ddp_init(struct cxgbi_device *cdev) 19677b36b6e0Skxie@chelsio.com { 196871f7a00bSVarun Prakash struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); 196971f7a00bSVarun Prakash struct net_device *ndev = cdev->ports[0]; 197071f7a00bSVarun Prakash struct cxgbi_tag_format tformat; 197171f7a00bSVarun Prakash unsigned int ppmax; 197271f7a00bSVarun Prakash int i; 197371f7a00bSVarun Prakash 197471f7a00bSVarun Prakash if (!lldi->vr->iscsi.size) { 197571f7a00bSVarun Prakash pr_warn("%s, iscsi NOT enabled, check config!\n", ndev->name); 197671f7a00bSVarun Prakash return -EACCES; 197771f7a00bSVarun Prakash } 197871f7a00bSVarun Prakash 197971f7a00bSVarun Prakash cdev->flags |= CXGBI_FLAG_USE_PPOD_OFLDQ; 198071f7a00bSVarun Prakash ppmax = lldi->vr->iscsi.size >> PPOD_SIZE_SHIFT; 198171f7a00bSVarun Prakash 198271f7a00bSVarun Prakash memset(&tformat, 0, sizeof(struct cxgbi_tag_format)); 198371f7a00bSVarun Prakash for (i = 0; i < 4; i++) 198471f7a00bSVarun Prakash tformat.pgsz_order[i] = (lldi->iscsi_pgsz_order >> (i << 3)) 198571f7a00bSVarun Prakash & 0xF; 198671f7a00bSVarun Prakash cxgbi_tagmask_check(lldi->iscsi_tagmask, &tformat); 198771f7a00bSVarun Prakash 198871f7a00bSVarun Prakash cxgbi_ddp_ppm_setup(lldi->iscsi_ppm, cdev, &tformat, ppmax, 198971f7a00bSVarun Prakash lldi->iscsi_llimit, lldi->vr->iscsi.start, 2); 199071f7a00bSVarun Prakash 19917b36b6e0Skxie@chelsio.com cdev->csk_ddp_setup_digest = ddp_setup_conn_digest; 19927b36b6e0Skxie@chelsio.com cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx; 199371f7a00bSVarun Prakash cdev->csk_ddp_set_map = ddp_set_map; 199471f7a00bSVarun Prakash cdev->tx_max_size = min_t(unsigned int, ULP2_MAX_PDU_PAYLOAD, 199571f7a00bSVarun Prakash lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN); 199671f7a00bSVarun Prakash cdev->rx_max_size = min_t(unsigned int, ULP2_MAX_PDU_PAYLOAD, 199771f7a00bSVarun Prakash lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN); 199871f7a00bSVarun Prakash cdev->cdev2ppm = cdev2ppm; 199971f7a00bSVarun Prakash 20007b36b6e0Skxie@chelsio.com return 0; 20017b36b6e0Skxie@chelsio.com } 20027b36b6e0Skxie@chelsio.com 20037b36b6e0Skxie@chelsio.com static void *t4_uld_add(const struct cxgb4_lld_info *lldi) 20047b36b6e0Skxie@chelsio.com { 20057b36b6e0Skxie@chelsio.com struct cxgbi_device *cdev; 20067b36b6e0Skxie@chelsio.com struct port_info *pi; 20077b36b6e0Skxie@chelsio.com int i, rc; 20087b36b6e0Skxie@chelsio.com 20097b36b6e0Skxie@chelsio.com cdev = cxgbi_device_register(sizeof(*lldi), lldi->nports); 20107b36b6e0Skxie@chelsio.com if (!cdev) { 20117b36b6e0Skxie@chelsio.com pr_info("t4 device 0x%p, register failed.\n", lldi); 20127b36b6e0Skxie@chelsio.com return NULL; 20137b36b6e0Skxie@chelsio.com } 20147b36b6e0Skxie@chelsio.com pr_info("0x%p,0x%x, ports %u,%s, chan %u, q %u,%u, wr %u.\n", 20157b36b6e0Skxie@chelsio.com cdev, lldi->adapter_type, lldi->nports, 20167b36b6e0Skxie@chelsio.com lldi->ports[0]->name, lldi->nchan, lldi->ntxq, 20177b36b6e0Skxie@chelsio.com lldi->nrxq, lldi->wr_cred); 20187b36b6e0Skxie@chelsio.com for (i = 0; i < lldi->nrxq; i++) 20197b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_DEV, 20207b36b6e0Skxie@chelsio.com "t4 0x%p, rxq id #%d: %u.\n", 20217b36b6e0Skxie@chelsio.com cdev, i, lldi->rxq_ids[i]); 20227b36b6e0Skxie@chelsio.com 20237b36b6e0Skxie@chelsio.com memcpy(cxgbi_cdev_priv(cdev), lldi, sizeof(*lldi)); 20247b36b6e0Skxie@chelsio.com cdev->flags = CXGBI_FLAG_DEV_T4; 20257b36b6e0Skxie@chelsio.com cdev->pdev = lldi->pdev; 20267b36b6e0Skxie@chelsio.com cdev->ports = lldi->ports; 20277b36b6e0Skxie@chelsio.com cdev->nports = lldi->nports; 20287b36b6e0Skxie@chelsio.com cdev->mtus = lldi->mtus; 20297b36b6e0Skxie@chelsio.com cdev->nmtus = NMTUS; 2030586be7cbSVarun Prakash cdev->rx_credit_thres = (CHELSIO_CHIP_VERSION(lldi->adapter_type) <= 2031586be7cbSVarun Prakash CHELSIO_T5) ? cxgb4i_rx_credit_thres : 0; 20327b36b6e0Skxie@chelsio.com cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN; 20337b36b6e0Skxie@chelsio.com cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr); 20347b36b6e0Skxie@chelsio.com cdev->itp = &cxgb4i_iscsi_transport; 20351fe1fdb0SVarun Prakash cdev->owner = THIS_MODULE; 20367b36b6e0Skxie@chelsio.com 2037d7990b0cSAnish Bhatt cdev->pfvf = FW_VIID_PFN_G(cxgb4_port_viid(lldi->ports[0])) 2038d7990b0cSAnish Bhatt << FW_VIID_PFN_S; 2039e27d6169Skxie@chelsio.com pr_info("cdev 0x%p,%s, pfvf %u.\n", 2040e27d6169Skxie@chelsio.com cdev, lldi->ports[0]->name, cdev->pfvf); 2041e27d6169Skxie@chelsio.com 20427b36b6e0Skxie@chelsio.com rc = cxgb4i_ddp_init(cdev); 20437b36b6e0Skxie@chelsio.com if (rc) { 20447b36b6e0Skxie@chelsio.com pr_info("t4 0x%p ddp init failed.\n", cdev); 20457b36b6e0Skxie@chelsio.com goto err_out; 20467b36b6e0Skxie@chelsio.com } 20477b36b6e0Skxie@chelsio.com rc = cxgb4i_ofld_init(cdev); 20487b36b6e0Skxie@chelsio.com if (rc) { 20497b36b6e0Skxie@chelsio.com pr_info("t4 0x%p ofld init failed.\n", cdev); 20507b36b6e0Skxie@chelsio.com goto err_out; 20517b36b6e0Skxie@chelsio.com } 20527b36b6e0Skxie@chelsio.com 20537b36b6e0Skxie@chelsio.com rc = cxgbi_hbas_add(cdev, CXGB4I_MAX_LUN, CXGBI_MAX_CONN, 20547b36b6e0Skxie@chelsio.com &cxgb4i_host_template, cxgb4i_stt); 20557b36b6e0Skxie@chelsio.com if (rc) 20567b36b6e0Skxie@chelsio.com goto err_out; 20577b36b6e0Skxie@chelsio.com 20587b36b6e0Skxie@chelsio.com for (i = 0; i < cdev->nports; i++) { 20597b36b6e0Skxie@chelsio.com pi = netdev_priv(lldi->ports[i]); 20607b36b6e0Skxie@chelsio.com cdev->hbas[i]->port_id = pi->port_id; 20617b36b6e0Skxie@chelsio.com } 20627b36b6e0Skxie@chelsio.com return cdev; 20637b36b6e0Skxie@chelsio.com 20647b36b6e0Skxie@chelsio.com err_out: 20657b36b6e0Skxie@chelsio.com cxgbi_device_unregister(cdev); 20667b36b6e0Skxie@chelsio.com return ERR_PTR(-ENOMEM); 20677b36b6e0Skxie@chelsio.com } 20687b36b6e0Skxie@chelsio.com 20697b36b6e0Skxie@chelsio.com #define RX_PULL_LEN 128 20707b36b6e0Skxie@chelsio.com static int t4_uld_rx_handler(void *handle, const __be64 *rsp, 20717b36b6e0Skxie@chelsio.com const struct pkt_gl *pgl) 20727b36b6e0Skxie@chelsio.com { 20737b36b6e0Skxie@chelsio.com const struct cpl_act_establish *rpl; 20747b36b6e0Skxie@chelsio.com struct sk_buff *skb; 20757b36b6e0Skxie@chelsio.com unsigned int opc; 20767b36b6e0Skxie@chelsio.com struct cxgbi_device *cdev = handle; 20777b36b6e0Skxie@chelsio.com 20787b36b6e0Skxie@chelsio.com if (pgl == NULL) { 20797b36b6e0Skxie@chelsio.com unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; 20807b36b6e0Skxie@chelsio.com 208124d3f95aSkxie@chelsio.com skb = alloc_wr(len, 0, GFP_ATOMIC); 20827b36b6e0Skxie@chelsio.com if (!skb) 20837b36b6e0Skxie@chelsio.com goto nomem; 20847b36b6e0Skxie@chelsio.com skb_copy_to_linear_data(skb, &rsp[1], len); 20857b36b6e0Skxie@chelsio.com } else { 20867b36b6e0Skxie@chelsio.com if (unlikely(*(u8 *)rsp != *(u8 *)pgl->va)) { 20877b36b6e0Skxie@chelsio.com pr_info("? FL 0x%p,RSS%#llx,FL %#llx,len %u.\n", 20887b36b6e0Skxie@chelsio.com pgl->va, be64_to_cpu(*rsp), 20897b36b6e0Skxie@chelsio.com be64_to_cpu(*(u64 *)pgl->va), 20907b36b6e0Skxie@chelsio.com pgl->tot_len); 20917b36b6e0Skxie@chelsio.com return 0; 20927b36b6e0Skxie@chelsio.com } 20937b36b6e0Skxie@chelsio.com skb = cxgb4_pktgl_to_skb(pgl, RX_PULL_LEN, RX_PULL_LEN); 20947b36b6e0Skxie@chelsio.com if (unlikely(!skb)) 20957b36b6e0Skxie@chelsio.com goto nomem; 20967b36b6e0Skxie@chelsio.com } 20977b36b6e0Skxie@chelsio.com 20987b36b6e0Skxie@chelsio.com rpl = (struct cpl_act_establish *)skb->data; 20997b36b6e0Skxie@chelsio.com opc = rpl->ot.opcode; 21007b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE, 21017b36b6e0Skxie@chelsio.com "cdev %p, opcode 0x%x(0x%x,0x%x), skb %p.\n", 21027b36b6e0Skxie@chelsio.com cdev, opc, rpl->ot.opcode_tid, ntohl(rpl->ot.opcode_tid), skb); 21037b36b6e0Skxie@chelsio.com if (cxgb4i_cplhandlers[opc]) 21047b36b6e0Skxie@chelsio.com cxgb4i_cplhandlers[opc](cdev, skb); 21057b36b6e0Skxie@chelsio.com else { 21067b36b6e0Skxie@chelsio.com pr_err("No handler for opcode 0x%x.\n", opc); 21077b36b6e0Skxie@chelsio.com __kfree_skb(skb); 21087b36b6e0Skxie@chelsio.com } 21097b36b6e0Skxie@chelsio.com return 0; 21107b36b6e0Skxie@chelsio.com nomem: 21117b36b6e0Skxie@chelsio.com log_debug(1 << CXGBI_DBG_TOE, "OOM bailing out.\n"); 21127b36b6e0Skxie@chelsio.com return 1; 21137b36b6e0Skxie@chelsio.com } 21147b36b6e0Skxie@chelsio.com 21157b36b6e0Skxie@chelsio.com static int t4_uld_state_change(void *handle, enum cxgb4_state state) 21167b36b6e0Skxie@chelsio.com { 21177b36b6e0Skxie@chelsio.com struct cxgbi_device *cdev = handle; 21187b36b6e0Skxie@chelsio.com 21197b36b6e0Skxie@chelsio.com switch (state) { 21207b36b6e0Skxie@chelsio.com case CXGB4_STATE_UP: 21217b36b6e0Skxie@chelsio.com pr_info("cdev 0x%p, UP.\n", cdev); 21227b36b6e0Skxie@chelsio.com break; 21237b36b6e0Skxie@chelsio.com case CXGB4_STATE_START_RECOVERY: 21247b36b6e0Skxie@chelsio.com pr_info("cdev 0x%p, RECOVERY.\n", cdev); 21257b36b6e0Skxie@chelsio.com /* close all connections */ 21267b36b6e0Skxie@chelsio.com break; 21277b36b6e0Skxie@chelsio.com case CXGB4_STATE_DOWN: 21287b36b6e0Skxie@chelsio.com pr_info("cdev 0x%p, DOWN.\n", cdev); 21297b36b6e0Skxie@chelsio.com break; 21307b36b6e0Skxie@chelsio.com case CXGB4_STATE_DETACH: 21317b36b6e0Skxie@chelsio.com pr_info("cdev 0x%p, DETACH.\n", cdev); 2132c3b331a3SThadeu Lima de Souza Cascardo cxgbi_device_unregister(cdev); 21337b36b6e0Skxie@chelsio.com break; 21347b36b6e0Skxie@chelsio.com default: 21357b36b6e0Skxie@chelsio.com pr_info("cdev 0x%p, unknown state %d.\n", cdev, state); 21367b36b6e0Skxie@chelsio.com break; 21377b36b6e0Skxie@chelsio.com } 21387b36b6e0Skxie@chelsio.com return 0; 21397b36b6e0Skxie@chelsio.com } 21407b36b6e0Skxie@chelsio.com 21417b36b6e0Skxie@chelsio.com static int __init cxgb4i_init_module(void) 21427b36b6e0Skxie@chelsio.com { 21437b36b6e0Skxie@chelsio.com int rc; 21447b36b6e0Skxie@chelsio.com 21457b36b6e0Skxie@chelsio.com printk(KERN_INFO "%s", version); 21467b36b6e0Skxie@chelsio.com 21477b36b6e0Skxie@chelsio.com rc = cxgbi_iscsi_init(&cxgb4i_iscsi_transport, &cxgb4i_stt); 21487b36b6e0Skxie@chelsio.com if (rc < 0) 21497b36b6e0Skxie@chelsio.com return rc; 21507b36b6e0Skxie@chelsio.com cxgb4_register_uld(CXGB4_ULD_ISCSI, &cxgb4i_uld_info); 2151759a0cc5SAnish Bhatt 21527b36b6e0Skxie@chelsio.com return 0; 21537b36b6e0Skxie@chelsio.com } 21547b36b6e0Skxie@chelsio.com 21557b36b6e0Skxie@chelsio.com static void __exit cxgb4i_exit_module(void) 21567b36b6e0Skxie@chelsio.com { 21577b36b6e0Skxie@chelsio.com cxgb4_unregister_uld(CXGB4_ULD_ISCSI); 21587b36b6e0Skxie@chelsio.com cxgbi_device_unregister_all(CXGBI_FLAG_DEV_T4); 21597b36b6e0Skxie@chelsio.com cxgbi_iscsi_cleanup(&cxgb4i_iscsi_transport, &cxgb4i_stt); 21607b36b6e0Skxie@chelsio.com } 21617b36b6e0Skxie@chelsio.com 21627b36b6e0Skxie@chelsio.com module_init(cxgb4i_init_module); 21637b36b6e0Skxie@chelsio.com module_exit(cxgb4i_exit_module); 2164