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 50 #define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256) 51 #define QED_IWARP_MAX_OOO (16) 52 #define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384) 53 54 #define QED_IWARP_HANDLE_INVAL (0xff) 55 56 struct qed_iwarp_ll2_buff { 57 struct qed_iwarp_ll2_buff *piggy_buf; 58 void *data; 59 dma_addr_t data_phys_addr; 60 u32 buff_size; 61 }; 62 63 struct qed_iwarp_ll2_mpa_buf { 64 struct list_head list_entry; 65 struct qed_iwarp_ll2_buff *ll2_buf; 66 struct unaligned_opaque_data data; 67 u16 tcp_payload_len; 68 u8 placement_offset; 69 }; 70 71 /* In some cases a fpdu will arrive with only one byte of the header, in this 72 * case the fpdu_length will be partial (contain only higher byte and 73 * incomplete bytes will contain the invalid value 74 */ 75 #define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff 76 77 struct qed_iwarp_fpdu { 78 struct qed_iwarp_ll2_buff *mpa_buf; 79 void *mpa_frag_virt; 80 dma_addr_t mpa_frag; 81 dma_addr_t pkt_hdr; 82 u16 mpa_frag_len; 83 u16 fpdu_length; 84 u16 incomplete_bytes; 85 u8 pkt_hdr_size; 86 }; 87 88 struct qed_iwarp_info { 89 struct list_head listen_list; /* qed_iwarp_listener */ 90 struct list_head ep_list; /* qed_iwarp_ep */ 91 struct list_head ep_free_list; /* pre-allocated ep's */ 92 struct list_head mpa_buf_list; /* list of mpa_bufs */ 93 struct list_head mpa_buf_pending_list; 94 spinlock_t iw_lock; /* for iwarp resources */ 95 spinlock_t qp_lock; /* for teardown races */ 96 u32 rcv_wnd_scale; 97 u16 rcv_wnd_size; 98 u16 max_mtu; 99 u8 mac_addr[ETH_ALEN]; 100 u8 crc_needed; 101 u8 tcp_flags; 102 u8 ll2_syn_handle; 103 u8 ll2_ooo_handle; 104 u8 ll2_mpa_handle; 105 u8 peer2peer; 106 enum mpa_negotiation_mode mpa_rev; 107 enum mpa_rtr_type rtr_type; 108 struct qed_iwarp_fpdu *partial_fpdus; 109 struct qed_iwarp_ll2_mpa_buf *mpa_bufs; 110 u8 *mpa_intermediate_buf; 111 u16 max_num_partial_fpdus; 112 }; 113 114 enum qed_iwarp_ep_state { 115 QED_IWARP_EP_INIT, 116 QED_IWARP_EP_MPA_REQ_RCVD, 117 QED_IWARP_EP_MPA_OFFLOADED, 118 QED_IWARP_EP_ESTABLISHED, 119 QED_IWARP_EP_CLOSED 120 }; 121 122 union async_output { 123 struct iwarp_eqe_data_mpa_async_completion mpa_response; 124 struct iwarp_eqe_data_tcp_async_completion mpa_request; 125 }; 126 127 #define QED_MAX_PRIV_DATA_LEN (512) 128 struct qed_iwarp_ep_memory { 129 u8 in_pdata[QED_MAX_PRIV_DATA_LEN]; 130 u8 out_pdata[QED_MAX_PRIV_DATA_LEN]; 131 union async_output async_output; 132 }; 133 134 /* Endpoint structure represents a TCP connection. This connection can be 135 * associated with a QP or not (in which case QP==NULL) 136 */ 137 struct qed_iwarp_ep { 138 struct list_head list_entry; 139 struct qed_rdma_qp *qp; 140 struct qed_iwarp_ep_memory *ep_buffer_virt; 141 dma_addr_t ep_buffer_phys; 142 enum qed_iwarp_ep_state state; 143 int sig; 144 struct qed_iwarp_cm_info cm_info; 145 enum tcp_connect_mode connect_mode; 146 enum mpa_rtr_type rtr_type; 147 enum mpa_negotiation_mode mpa_rev; 148 u32 tcp_cid; 149 u32 cid; 150 u16 mss; 151 u8 remote_mac_addr[6]; 152 u8 local_mac_addr[6]; 153 bool mpa_reply_processed; 154 155 /* For Passive side - syn packet related data */ 156 u16 syn_ip_payload_length; 157 struct qed_iwarp_ll2_buff *syn; 158 dma_addr_t syn_phy_addr; 159 160 /* The event_cb function is called for asynchrounous events associated 161 * with the ep. It is initialized at different entry points depending 162 * on whether the ep is the tcp connection active side or passive side 163 * The cb_context is passed to the event_cb function. 164 */ 165 iwarp_event_handler event_cb; 166 void *cb_context; 167 }; 168 169 struct qed_iwarp_listener { 170 struct list_head list_entry; 171 172 /* The event_cb function is called for connection requests. 173 * The cb_context is passed to the event_cb function. 174 */ 175 iwarp_event_handler event_cb; 176 void *cb_context; 177 u32 max_backlog; 178 u32 ip_addr[4]; 179 u16 port; 180 u16 vlan; 181 u8 ip_version; 182 }; 183 184 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); 185 186 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, 187 struct qed_rdma_start_in_params *params); 188 189 void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 190 struct iwarp_init_func_ramrod_data *p_ramrod); 191 192 int qed_iwarp_stop(struct qed_hwfn *p_hwfn); 193 194 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); 195 196 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); 197 198 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 199 200 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 201 struct qed_rdma_qp *qp, 202 struct qed_rdma_create_qp_out_params *out_params); 203 204 int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, 205 enum qed_iwarp_qp_state new_state, bool internal); 206 207 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 208 209 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 210 211 void qed_iwarp_query_qp(struct qed_rdma_qp *qp, 212 struct qed_rdma_query_qp_out_params *out_params); 213 214 int 215 qed_iwarp_connect(void *rdma_cxt, 216 struct qed_iwarp_connect_in *iparams, 217 struct qed_iwarp_connect_out *oparams); 218 219 int 220 qed_iwarp_create_listen(void *rdma_cxt, 221 struct qed_iwarp_listen_in *iparams, 222 struct qed_iwarp_listen_out *oparams); 223 224 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams); 225 226 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams); 227 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle); 228 229 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams); 230 231 #endif 232