1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #ifndef _QED_IWARP_H 33 #define _QED_IWARP_H 34 35 enum qed_iwarp_qp_state { 36 QED_IWARP_QP_STATE_IDLE, 37 QED_IWARP_QP_STATE_RTS, 38 QED_IWARP_QP_STATE_TERMINATE, 39 QED_IWARP_QP_STATE_CLOSING, 40 QED_IWARP_QP_STATE_ERROR, 41 }; 42 43 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state); 44 45 #define QED_IWARP_PREALLOC_CNT (256) 46 47 #define QED_IWARP_LL2_SYN_TX_SIZE (128) 48 #define QED_IWARP_LL2_SYN_RX_SIZE (256) 49 #define QED_IWARP_MAX_SYN_PKT_SIZE (128) 50 #define QED_IWARP_HANDLE_INVAL (0xff) 51 52 struct qed_iwarp_ll2_buff { 53 void *data; 54 dma_addr_t data_phys_addr; 55 u32 buff_size; 56 }; 57 58 struct qed_iwarp_info { 59 struct list_head listen_list; /* qed_iwarp_listener */ 60 struct list_head ep_list; /* qed_iwarp_ep */ 61 struct list_head ep_free_list; /* pre-allocated ep's */ 62 spinlock_t iw_lock; /* for iwarp resources */ 63 spinlock_t qp_lock; /* for teardown races */ 64 u32 rcv_wnd_scale; 65 u16 max_mtu; 66 u8 mac_addr[ETH_ALEN]; 67 u8 crc_needed; 68 u8 tcp_flags; 69 u8 ll2_syn_handle; 70 u8 peer2peer; 71 enum mpa_negotiation_mode mpa_rev; 72 enum mpa_rtr_type rtr_type; 73 }; 74 75 enum qed_iwarp_ep_state { 76 QED_IWARP_EP_INIT, 77 QED_IWARP_EP_MPA_REQ_RCVD, 78 QED_IWARP_EP_MPA_OFFLOADED, 79 QED_IWARP_EP_ESTABLISHED, 80 QED_IWARP_EP_CLOSED 81 }; 82 83 union async_output { 84 struct iwarp_eqe_data_mpa_async_completion mpa_response; 85 struct iwarp_eqe_data_tcp_async_completion mpa_request; 86 }; 87 88 #define QED_MAX_PRIV_DATA_LEN (512) 89 struct qed_iwarp_ep_memory { 90 u8 in_pdata[QED_MAX_PRIV_DATA_LEN]; 91 u8 out_pdata[QED_MAX_PRIV_DATA_LEN]; 92 union async_output async_output; 93 }; 94 95 /* Endpoint structure represents a TCP connection. This connection can be 96 * associated with a QP or not (in which case QP==NULL) 97 */ 98 struct qed_iwarp_ep { 99 struct list_head list_entry; 100 struct qed_rdma_qp *qp; 101 struct qed_iwarp_ep_memory *ep_buffer_virt; 102 dma_addr_t ep_buffer_phys; 103 enum qed_iwarp_ep_state state; 104 int sig; 105 struct qed_iwarp_cm_info cm_info; 106 enum tcp_connect_mode connect_mode; 107 enum mpa_rtr_type rtr_type; 108 enum mpa_negotiation_mode mpa_rev; 109 u32 tcp_cid; 110 u32 cid; 111 u16 mss; 112 u8 remote_mac_addr[6]; 113 u8 local_mac_addr[6]; 114 bool mpa_reply_processed; 115 116 /* For Passive side - syn packet related data */ 117 u16 syn_ip_payload_length; 118 struct qed_iwarp_ll2_buff *syn; 119 dma_addr_t syn_phy_addr; 120 121 /* The event_cb function is called for asynchrounous events associated 122 * with the ep. It is initialized at different entry points depending 123 * on whether the ep is the tcp connection active side or passive side 124 * The cb_context is passed to the event_cb function. 125 */ 126 iwarp_event_handler event_cb; 127 void *cb_context; 128 }; 129 130 struct qed_iwarp_listener { 131 struct list_head list_entry; 132 133 /* The event_cb function is called for connection requests. 134 * The cb_context is passed to the event_cb function. 135 */ 136 iwarp_event_handler event_cb; 137 void *cb_context; 138 u32 max_backlog; 139 u32 ip_addr[4]; 140 u16 port; 141 u16 vlan; 142 u8 ip_version; 143 }; 144 145 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); 146 147 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, 148 struct qed_rdma_start_in_params *params); 149 150 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 151 152 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); 153 154 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); 155 156 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 157 158 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 159 struct qed_rdma_qp *qp, 160 struct qed_rdma_create_qp_out_params *out_params); 161 162 int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, 163 enum qed_iwarp_qp_state new_state, bool internal); 164 165 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 166 167 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 168 169 void qed_iwarp_query_qp(struct qed_rdma_qp *qp, 170 struct qed_rdma_query_qp_out_params *out_params); 171 172 int 173 qed_iwarp_connect(void *rdma_cxt, 174 struct qed_iwarp_connect_in *iparams, 175 struct qed_iwarp_connect_out *oparams); 176 177 int 178 qed_iwarp_create_listen(void *rdma_cxt, 179 struct qed_iwarp_listen_in *iparams, 180 struct qed_iwarp_listen_out *oparams); 181 182 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams); 183 184 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams); 185 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle); 186 187 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams); 188 189 #endif 190