1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ 2 /* QLogic qed NIC Driver 3 * Copyright (c) 2015-2017 QLogic Corporation 4 * Copyright (c) 2019-2020 Marvell International Ltd. 5 */ 6 7 #ifndef _QED_IWARP_H 8 #define _QED_IWARP_H 9 10 enum qed_iwarp_qp_state { 11 QED_IWARP_QP_STATE_IDLE, 12 QED_IWARP_QP_STATE_RTS, 13 QED_IWARP_QP_STATE_TERMINATE, 14 QED_IWARP_QP_STATE_CLOSING, 15 QED_IWARP_QP_STATE_ERROR, 16 }; 17 18 enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state); 19 20 #define QED_IWARP_PREALLOC_CNT (256) 21 22 #define QED_IWARP_LL2_SYN_TX_SIZE (128) 23 #define QED_IWARP_LL2_SYN_RX_SIZE (256) 24 25 #define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256) 26 #define QED_IWARP_MAX_OOO (16) 27 #define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384) 28 29 #define QED_IWARP_HANDLE_INVAL (0xff) 30 31 struct qed_iwarp_ll2_buff { 32 struct qed_iwarp_ll2_buff *piggy_buf; 33 void *data; 34 dma_addr_t data_phys_addr; 35 u32 buff_size; 36 }; 37 38 struct qed_iwarp_ll2_mpa_buf { 39 struct list_head list_entry; 40 struct qed_iwarp_ll2_buff *ll2_buf; 41 struct unaligned_opaque_data data; 42 u16 tcp_payload_len; 43 u8 placement_offset; 44 }; 45 46 /* In some cases a fpdu will arrive with only one byte of the header, in this 47 * case the fpdu_length will be partial (contain only higher byte and 48 * incomplete bytes will contain the invalid value 49 */ 50 #define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff 51 52 struct qed_iwarp_fpdu { 53 struct qed_iwarp_ll2_buff *mpa_buf; 54 void *mpa_frag_virt; 55 dma_addr_t mpa_frag; 56 dma_addr_t pkt_hdr; 57 u16 mpa_frag_len; 58 u16 fpdu_length; 59 u16 incomplete_bytes; 60 u8 pkt_hdr_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 struct list_head mpa_buf_list; /* list of mpa_bufs */ 68 struct list_head mpa_buf_pending_list; 69 spinlock_t iw_lock; /* for iwarp resources */ 70 spinlock_t qp_lock; /* for teardown races */ 71 u32 rcv_wnd_scale; 72 u16 rcv_wnd_size; 73 u16 max_mtu; 74 u8 mac_addr[ETH_ALEN]; 75 u8 crc_needed; 76 u8 tcp_flags; 77 u8 ll2_syn_handle; 78 u8 ll2_ooo_handle; 79 u8 ll2_mpa_handle; 80 u8 peer2peer; 81 enum mpa_negotiation_mode mpa_rev; 82 enum mpa_rtr_type rtr_type; 83 struct qed_iwarp_fpdu *partial_fpdus; 84 struct qed_iwarp_ll2_mpa_buf *mpa_bufs; 85 u8 *mpa_intermediate_buf; 86 u16 max_num_partial_fpdus; 87 }; 88 89 enum qed_iwarp_ep_state { 90 QED_IWARP_EP_INIT, 91 QED_IWARP_EP_MPA_REQ_RCVD, 92 QED_IWARP_EP_MPA_OFFLOADED, 93 QED_IWARP_EP_ESTABLISHED, 94 QED_IWARP_EP_CLOSED 95 }; 96 97 union async_output { 98 struct iwarp_eqe_data_mpa_async_completion mpa_response; 99 struct iwarp_eqe_data_tcp_async_completion mpa_request; 100 }; 101 102 #define QED_MAX_PRIV_DATA_LEN (512) 103 struct qed_iwarp_ep_memory { 104 u8 in_pdata[QED_MAX_PRIV_DATA_LEN]; 105 u8 out_pdata[QED_MAX_PRIV_DATA_LEN]; 106 union async_output async_output; 107 }; 108 109 /* Endpoint structure represents a TCP connection. This connection can be 110 * associated with a QP or not (in which case QP==NULL) 111 */ 112 struct qed_iwarp_ep { 113 struct list_head list_entry; 114 struct qed_rdma_qp *qp; 115 struct qed_iwarp_ep_memory *ep_buffer_virt; 116 dma_addr_t ep_buffer_phys; 117 enum qed_iwarp_ep_state state; 118 int sig; 119 struct qed_iwarp_cm_info cm_info; 120 enum tcp_connect_mode connect_mode; 121 enum mpa_rtr_type rtr_type; 122 enum mpa_negotiation_mode mpa_rev; 123 u32 tcp_cid; 124 u32 cid; 125 u16 mss; 126 u8 remote_mac_addr[6]; 127 u8 local_mac_addr[6]; 128 bool mpa_reply_processed; 129 130 /* For Passive side - syn packet related data */ 131 u16 syn_ip_payload_length; 132 struct qed_iwarp_ll2_buff *syn; 133 dma_addr_t syn_phy_addr; 134 135 /* The event_cb function is called for asynchrounous events associated 136 * with the ep. It is initialized at different entry points depending 137 * on whether the ep is the tcp connection active side or passive side 138 * The cb_context is passed to the event_cb function. 139 */ 140 iwarp_event_handler event_cb; 141 void *cb_context; 142 }; 143 144 struct qed_iwarp_listener { 145 struct list_head list_entry; 146 147 /* The event_cb function is called for connection requests. 148 * The cb_context is passed to the event_cb function. 149 */ 150 iwarp_event_handler event_cb; 151 void *cb_context; 152 u32 max_backlog; 153 u32 ip_addr[4]; 154 u16 port; 155 u16 vlan; 156 u8 ip_version; 157 }; 158 159 int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); 160 161 int qed_iwarp_setup(struct qed_hwfn *p_hwfn, 162 struct qed_rdma_start_in_params *params); 163 164 void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, 165 struct iwarp_init_func_ramrod_data *p_ramrod); 166 167 int qed_iwarp_stop(struct qed_hwfn *p_hwfn); 168 169 void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); 170 171 void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); 172 173 void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); 174 175 int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, 176 struct qed_rdma_qp *qp, 177 struct qed_rdma_create_qp_out_params *out_params); 178 179 int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, 180 enum qed_iwarp_qp_state new_state, bool internal); 181 182 int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 183 184 int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); 185 186 void qed_iwarp_query_qp(struct qed_rdma_qp *qp, 187 struct qed_rdma_query_qp_out_params *out_params); 188 189 int 190 qed_iwarp_connect(void *rdma_cxt, 191 struct qed_iwarp_connect_in *iparams, 192 struct qed_iwarp_connect_out *oparams); 193 194 int 195 qed_iwarp_create_listen(void *rdma_cxt, 196 struct qed_iwarp_listen_in *iparams, 197 struct qed_iwarp_listen_out *oparams); 198 199 int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams); 200 201 int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams); 202 int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle); 203 204 int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams); 205 206 #endif 207