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 51 #define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256) 52 #define QED_IWARP_MAX_OOO (16) 53 #define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384) 54 55 #define QED_IWARP_HANDLE_INVAL (0xff) 56 57 struct qed_iwarp_ll2_buff { 58 void *data; 59 dma_addr_t data_phys_addr; 60 u32 buff_size; 61 }; 62 63 struct qed_iwarp_info { 64 struct list_head listen_list; /* qed_iwarp_listener */ 65 struct list_head ep_list; /* qed_iwarp_ep */ 66 struct list_head ep_free_list; /* pre-allocated ep's */ 67 spinlock_t iw_lock; /* for iwarp resources */ 68 spinlock_t qp_lock; /* for teardown races */ 69 u32 rcv_wnd_scale; 70 u16 max_mtu; 71 u8 mac_addr[ETH_ALEN]; 72 u8 crc_needed; 73 u8 tcp_flags; 74 u8 ll2_syn_handle; 75 u8 ll2_ooo_handle; 76 u8 peer2peer; 77 enum mpa_negotiation_mode mpa_rev; 78 enum mpa_rtr_type rtr_type; 79 }; 80 81 enum qed_iwarp_ep_state { 82 QED_IWARP_EP_INIT, 83 QED_IWARP_EP_MPA_REQ_RCVD, 84 QED_IWARP_EP_MPA_OFFLOADED, 85 QED_IWARP_EP_ESTABLISHED, 86 QED_IWARP_EP_CLOSED 87 }; 88 89 union async_output { 90 struct iwarp_eqe_data_mpa_async_completion mpa_response; 91 struct iwarp_eqe_data_tcp_async_completion mpa_request; 92 }; 93 94 #define QED_MAX_PRIV_DATA_LEN (512) 95 struct qed_iwarp_ep_memory { 96 u8 in_pdata[QED_MAX_PRIV_DATA_LEN]; 97 u8 out_pdata[QED_MAX_PRIV_DATA_LEN]; 98 union async_output async_output; 99 }; 100 101 /* Endpoint structure represents a TCP connection. This connection can be 102 * associated with a QP or not (in which case QP==NULL) 103 */ 104 struct qed_iwarp_ep { 105 struct list_head list_entry; 106 struct qed_rdma_qp *qp; 107 struct qed_iwarp_ep_memory *ep_buffer_virt; 108 dma_addr_t ep_buffer_phys; 109 enum qed_iwarp_ep_state state; 110 int sig; 111 struct qed_iwarp_cm_info cm_info; 112 enum tcp_connect_mode connect_mode; 113 enum mpa_rtr_type rtr_type; 114 enum mpa_negotiation_mode mpa_rev; 115 u32 tcp_cid; 116 u32 cid; 117 u16 mss; 118 u8 remote_mac_addr[6]; 119 u8 local_mac_addr[6]; 120 bool mpa_reply_processed; 121 122 /* For Passive side - syn packet related data */ 123 u16 syn_ip_payload_length; 124 struct qed_iwarp_ll2_buff *syn; 125 dma_addr_t syn_phy_addr; 126 127 /* The event_cb function is called for asynchrounous events associated 128 * with the ep. It is initialized at different entry points depending 129 * on whether the ep is the tcp connection active side or passive side 130 * The cb_context is passed to the event_cb function. 131 */ 132 iwarp_event_handler event_cb; 133 void *cb_context; 134 }; 135 136 struct qed_iwarp_listener { 137 struct list_head list_entry; 138 139 /* The event_cb function is called for connection requests. 140 * The cb_context is passed to the event_cb function. 141 */ 142 iwarp_event_handler event_cb; 143 void *cb_context; 144 u32 max_backlog; 145 u32 ip_addr[4]; 146 u16 port; 147 u16 vlan; 148 u8 ip_version; 149 }; 150 151 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); 152 153 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, 154 struct qed_rdma_start_in_params *params); 155 156 void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 157 struct iwarp_init_func_params *p_ramrod); 158 159 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 160 161 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); 162 163 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); 164 165 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 166 167 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 168 struct qed_rdma_qp *qp, 169 struct qed_rdma_create_qp_out_params *out_params); 170 171 int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, 172 enum qed_iwarp_qp_state new_state, bool internal); 173 174 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 175 176 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 177 178 void qed_iwarp_query_qp(struct qed_rdma_qp *qp, 179 struct qed_rdma_query_qp_out_params *out_params); 180 181 int 182 qed_iwarp_connect(void *rdma_cxt, 183 struct qed_iwarp_connect_in *iparams, 184 struct qed_iwarp_connect_out *oparams); 185 186 int 187 qed_iwarp_create_listen(void *rdma_cxt, 188 struct qed_iwarp_listen_in *iparams, 189 struct qed_iwarp_listen_out *oparams); 190 191 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams); 192 193 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams); 194 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle); 195 196 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams); 197 198 #endif 199