1 /* 2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #ifndef RXE_LOC_H 35 #define RXE_LOC_H 36 37 /* rxe_av.c */ 38 39 int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr); 40 41 void rxe_av_from_attr(u8 port_num, struct rxe_av *av, 42 struct rdma_ah_attr *attr); 43 44 void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr); 45 46 void rxe_av_fill_ip_info(struct rxe_av *av, 47 struct rdma_ah_attr *attr, 48 struct ib_gid_attr *sgid_attr, 49 union ib_gid *sgid); 50 51 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt); 52 53 /* rxe_cq.c */ 54 int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq, 55 int cqe, int comp_vector); 56 57 int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe, 58 int comp_vector, struct ib_ucontext *context, 59 struct rxe_create_cq_resp __user *uresp); 60 61 int rxe_cq_resize_queue(struct rxe_cq *cq, int new_cqe, 62 struct rxe_resize_cq_resp __user *uresp); 63 64 int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited); 65 66 void rxe_cq_disable(struct rxe_cq *cq); 67 68 void rxe_cq_cleanup(struct rxe_pool_entry *arg); 69 70 /* rxe_mcast.c */ 71 int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid, 72 struct rxe_mc_grp **grp_p); 73 74 int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp, 75 struct rxe_mc_grp *grp); 76 77 int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp, 78 union ib_gid *mgid); 79 80 void rxe_drop_all_mcast_groups(struct rxe_qp *qp); 81 82 void rxe_mc_cleanup(struct rxe_pool_entry *arg); 83 84 /* rxe_mmap.c */ 85 struct rxe_mmap_info { 86 struct list_head pending_mmaps; 87 struct ib_ucontext *context; 88 struct kref ref; 89 void *obj; 90 91 struct mminfo info; 92 }; 93 94 void rxe_mmap_release(struct kref *ref); 95 96 struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev, 97 u32 size, 98 struct ib_ucontext *context, 99 void *obj); 100 101 int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); 102 103 /* rxe_mr.c */ 104 enum copy_direction { 105 to_mem_obj, 106 from_mem_obj, 107 }; 108 109 int rxe_mem_init_dma(struct rxe_pd *pd, 110 int access, struct rxe_mem *mem); 111 112 int rxe_mem_init_user(struct rxe_pd *pd, u64 start, 113 u64 length, u64 iova, int access, struct ib_udata *udata, 114 struct rxe_mem *mr); 115 116 int rxe_mem_init_fast(struct rxe_pd *pd, 117 int max_pages, struct rxe_mem *mem); 118 119 int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr, 120 int length, enum copy_direction dir, u32 *crcp); 121 122 int copy_data(struct rxe_pd *pd, int access, 123 struct rxe_dma_info *dma, void *addr, int length, 124 enum copy_direction dir, u32 *crcp); 125 126 void *iova_to_vaddr(struct rxe_mem *mem, u64 iova, int length); 127 128 enum lookup_type { 129 lookup_local, 130 lookup_remote, 131 }; 132 133 struct rxe_mem *lookup_mem(struct rxe_pd *pd, int access, u32 key, 134 enum lookup_type type); 135 136 int mem_check_range(struct rxe_mem *mem, u64 iova, size_t length); 137 138 int rxe_mem_map_pages(struct rxe_dev *rxe, struct rxe_mem *mem, 139 u64 *page, int num_pages, u64 iova); 140 141 void rxe_mem_cleanup(struct rxe_pool_entry *arg); 142 143 int advance_dma_data(struct rxe_dma_info *dma, unsigned int length); 144 145 /* rxe_net.c */ 146 void rxe_loopback(struct sk_buff *skb); 147 int rxe_send(struct rxe_pkt_info *pkt, struct sk_buff *skb); 148 struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av, 149 int paylen, struct rxe_pkt_info *pkt); 150 int rxe_prepare(struct rxe_dev *rxe, struct rxe_pkt_info *pkt, 151 struct sk_buff *skb, u32 *crc); 152 enum rdma_link_layer rxe_link_layer(struct rxe_dev *rxe, unsigned int port_num); 153 const char *rxe_parent_name(struct rxe_dev *rxe, unsigned int port_num); 154 struct device *rxe_dma_device(struct rxe_dev *rxe); 155 int rxe_mcast_add(struct rxe_dev *rxe, union ib_gid *mgid); 156 int rxe_mcast_delete(struct rxe_dev *rxe, union ib_gid *mgid); 157 158 /* rxe_qp.c */ 159 int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init); 160 161 int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd, 162 struct ib_qp_init_attr *init, 163 struct rxe_create_qp_resp __user *uresp, 164 struct ib_pd *ibpd); 165 166 int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init); 167 168 int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp, 169 struct ib_qp_attr *attr, int mask); 170 171 int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, 172 int mask, struct ib_udata *udata); 173 174 int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask); 175 176 void rxe_qp_error(struct rxe_qp *qp); 177 178 void rxe_qp_destroy(struct rxe_qp *qp); 179 180 void rxe_qp_cleanup(struct rxe_pool_entry *arg); 181 182 static inline int qp_num(struct rxe_qp *qp) 183 { 184 return qp->ibqp.qp_num; 185 } 186 187 static inline enum ib_qp_type qp_type(struct rxe_qp *qp) 188 { 189 return qp->ibqp.qp_type; 190 } 191 192 static inline enum ib_qp_state qp_state(struct rxe_qp *qp) 193 { 194 return qp->attr.qp_state; 195 } 196 197 static inline int qp_mtu(struct rxe_qp *qp) 198 { 199 if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) 200 return qp->attr.path_mtu; 201 else 202 return RXE_PORT_MAX_MTU; 203 } 204 205 static inline int rcv_wqe_size(int max_sge) 206 { 207 return sizeof(struct rxe_recv_wqe) + 208 max_sge * sizeof(struct ib_sge); 209 } 210 211 void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res); 212 213 static inline void rxe_advance_resp_resource(struct rxe_qp *qp) 214 { 215 qp->resp.res_head++; 216 if (unlikely(qp->resp.res_head == qp->attr.max_dest_rd_atomic)) 217 qp->resp.res_head = 0; 218 } 219 220 void retransmit_timer(struct timer_list *t); 221 void rnr_nak_timer(struct timer_list *t); 222 223 /* rxe_srq.c */ 224 #define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT) 225 226 int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq, 227 struct ib_srq_attr *attr, enum ib_srq_attr_mask mask); 228 229 int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq, 230 struct ib_srq_init_attr *init, 231 struct ib_ucontext *context, 232 struct rxe_create_srq_resp __user *uresp); 233 234 int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq, 235 struct ib_srq_attr *attr, enum ib_srq_attr_mask mask, 236 struct rxe_modify_srq_cmd *ucmd); 237 238 void rxe_release(struct kref *kref); 239 240 int rxe_completer(void *arg); 241 int rxe_requester(void *arg); 242 int rxe_responder(void *arg); 243 244 u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb); 245 246 void rxe_resp_queue_pkt(struct rxe_dev *rxe, 247 struct rxe_qp *qp, struct sk_buff *skb); 248 249 void rxe_comp_queue_pkt(struct rxe_dev *rxe, 250 struct rxe_qp *qp, struct sk_buff *skb); 251 252 static inline unsigned int wr_opcode_mask(int opcode, struct rxe_qp *qp) 253 { 254 return rxe_wr_opcode_info[opcode].mask[qp->ibqp.qp_type]; 255 } 256 257 static inline int rxe_xmit_packet(struct rxe_dev *rxe, struct rxe_qp *qp, 258 struct rxe_pkt_info *pkt, struct sk_buff *skb) 259 { 260 int err; 261 int is_request = pkt->mask & RXE_REQ_MASK; 262 263 if ((is_request && (qp->req.state != QP_STATE_READY)) || 264 (!is_request && (qp->resp.state != QP_STATE_READY))) { 265 pr_info("Packet dropped. QP is not in ready state\n"); 266 goto drop; 267 } 268 269 if (pkt->mask & RXE_LOOPBACK_MASK) { 270 memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt)); 271 rxe_loopback(skb); 272 err = 0; 273 } else { 274 err = rxe_send(pkt, skb); 275 } 276 277 if (err) { 278 rxe->xmit_errors++; 279 rxe_counter_inc(rxe, RXE_CNT_SEND_ERR); 280 return err; 281 } 282 283 if ((qp_type(qp) != IB_QPT_RC) && 284 (pkt->mask & RXE_END_MASK)) { 285 pkt->wqe->state = wqe_state_done; 286 rxe_run_task(&qp->comp.task, 1); 287 } 288 289 rxe_counter_inc(rxe, RXE_CNT_SENT_PKTS); 290 goto done; 291 292 drop: 293 kfree_skb(skb); 294 err = 0; 295 done: 296 return err; 297 } 298 299 #endif /* RXE_LOC_H */ 300