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 struct qed_iwarp_ll2_buff *piggy_buf; 59 void *data; 60 dma_addr_t data_phys_addr; 61 u32 buff_size; 62 }; 63 64 struct qed_iwarp_ll2_mpa_buf { 65 struct list_head list_entry; 66 struct qed_iwarp_ll2_buff *ll2_buf; 67 struct unaligned_opaque_data data; 68 u16 tcp_payload_len; 69 u8 placement_offset; 70 }; 71 72 /* In some cases a fpdu will arrive with only one byte of the header, in this 73 * case the fpdu_length will be partial (contain only higher byte and 74 * incomplete bytes will contain the invalid value 75 */ 76 #define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff 77 78 struct qed_iwarp_fpdu { 79 struct qed_iwarp_ll2_buff *mpa_buf; 80 void *mpa_frag_virt; 81 dma_addr_t mpa_frag; 82 dma_addr_t pkt_hdr; 83 u16 mpa_frag_len; 84 u16 fpdu_length; 85 u16 incomplete_bytes; 86 u8 pkt_hdr_size; 87 }; 88 89 struct qed_iwarp_info { 90 struct list_head listen_list; /* qed_iwarp_listener */ 91 struct list_head ep_list; /* qed_iwarp_ep */ 92 struct list_head ep_free_list; /* pre-allocated ep's */ 93 struct list_head mpa_buf_list; /* list of mpa_bufs */ 94 struct list_head mpa_buf_pending_list; 95 spinlock_t iw_lock; /* for iwarp resources */ 96 spinlock_t qp_lock; /* for teardown races */ 97 u32 rcv_wnd_scale; 98 u16 rcv_wnd_size; 99 u16 max_mtu; 100 u8 mac_addr[ETH_ALEN]; 101 u8 crc_needed; 102 u8 tcp_flags; 103 u8 ll2_syn_handle; 104 u8 ll2_ooo_handle; 105 u8 ll2_mpa_handle; 106 u8 peer2peer; 107 enum mpa_negotiation_mode mpa_rev; 108 enum mpa_rtr_type rtr_type; 109 struct qed_iwarp_fpdu *partial_fpdus; 110 struct qed_iwarp_ll2_mpa_buf *mpa_bufs; 111 u8 *mpa_intermediate_buf; 112 u16 max_num_partial_fpdus; 113 }; 114 115 enum qed_iwarp_ep_state { 116 QED_IWARP_EP_INIT, 117 QED_IWARP_EP_MPA_REQ_RCVD, 118 QED_IWARP_EP_MPA_OFFLOADED, 119 QED_IWARP_EP_ESTABLISHED, 120 QED_IWARP_EP_CLOSED 121 }; 122 123 union async_output { 124 struct iwarp_eqe_data_mpa_async_completion mpa_response; 125 struct iwarp_eqe_data_tcp_async_completion mpa_request; 126 }; 127 128 #define QED_MAX_PRIV_DATA_LEN (512) 129 struct qed_iwarp_ep_memory { 130 u8 in_pdata[QED_MAX_PRIV_DATA_LEN]; 131 u8 out_pdata[QED_MAX_PRIV_DATA_LEN]; 132 union async_output async_output; 133 }; 134 135 /* Endpoint structure represents a TCP connection. This connection can be 136 * associated with a QP or not (in which case QP==NULL) 137 */ 138 struct qed_iwarp_ep { 139 struct list_head list_entry; 140 struct qed_rdma_qp *qp; 141 struct qed_iwarp_ep_memory *ep_buffer_virt; 142 dma_addr_t ep_buffer_phys; 143 enum qed_iwarp_ep_state state; 144 int sig; 145 struct qed_iwarp_cm_info cm_info; 146 enum tcp_connect_mode connect_mode; 147 enum mpa_rtr_type rtr_type; 148 enum mpa_negotiation_mode mpa_rev; 149 u32 tcp_cid; 150 u32 cid; 151 u16 mss; 152 u8 remote_mac_addr[6]; 153 u8 local_mac_addr[6]; 154 bool mpa_reply_processed; 155 156 /* For Passive side - syn packet related data */ 157 u16 syn_ip_payload_length; 158 struct qed_iwarp_ll2_buff *syn; 159 dma_addr_t syn_phy_addr; 160 161 /* The event_cb function is called for asynchrounous events associated 162 * with the ep. It is initialized at different entry points depending 163 * on whether the ep is the tcp connection active side or passive side 164 * The cb_context is passed to the event_cb function. 165 */ 166 iwarp_event_handler event_cb; 167 void *cb_context; 168 }; 169 170 struct qed_iwarp_listener { 171 struct list_head list_entry; 172 173 /* The event_cb function is called for connection requests. 174 * The cb_context is passed to the event_cb function. 175 */ 176 iwarp_event_handler event_cb; 177 void *cb_context; 178 u32 max_backlog; 179 u32 ip_addr[4]; 180 u16 port; 181 u16 vlan; 182 u8 ip_version; 183 }; 184 185 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); 186 187 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, 188 struct qed_rdma_start_in_params *params); 189 190 void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 191 struct iwarp_init_func_ramrod_data *p_ramrod); 192 193 int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 194 195 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); 196 197 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); 198 199 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 200 201 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 202 struct qed_rdma_qp *qp, 203 struct qed_rdma_create_qp_out_params *out_params); 204 205 int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, 206 enum qed_iwarp_qp_state new_state, bool internal); 207 208 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 209 210 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 211 212 void qed_iwarp_query_qp(struct qed_rdma_qp *qp, 213 struct qed_rdma_query_qp_out_params *out_params); 214 215 int 216 qed_iwarp_connect(void *rdma_cxt, 217 struct qed_iwarp_connect_in *iparams, 218 struct qed_iwarp_connect_out *oparams); 219 220 int 221 qed_iwarp_create_listen(void *rdma_cxt, 222 struct qed_iwarp_listen_in *iparams, 223 struct qed_iwarp_listen_out *oparams); 224 225 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams); 226 227 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams); 228 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle); 229 230 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams); 231 232 #endif 233