1 /* QLogic qedr NIC Driver
2  * Copyright (c) 2015-2016  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 LINUX_QEDR_CM_H_
33 #define LINUX_QEDR_CM_H_
34 
35 #define QEDR_GSI_MAX_RECV_WR	(4096)
36 #define QEDR_GSI_MAX_SEND_WR	(4096)
37 
38 #define QEDR_GSI_MAX_RECV_SGE	(1)	/* LL2 FW limitation */
39 
40 #define QEDR_ROCE_V2_UDP_SPORT	(0000)
41 
42 static inline u32 qedr_get_ipv4_from_gid(const u8 *gid)
43 {
44 	return *(u32 *)(void *)&gid[12];
45 }
46 
47 /* RDMA CM */
48 int qedr_gsi_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
49 int qedr_gsi_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
50 		       const struct ib_recv_wr **bad_wr);
51 int qedr_gsi_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
52 		       const struct ib_send_wr **bad_wr);
53 int qedr_create_gsi_qp(struct qedr_dev *dev, struct ib_qp_init_attr *attrs,
54 		       struct qedr_qp *qp);
55 void qedr_store_gsi_qp_cq(struct qedr_dev *dev,
56 			  struct qedr_qp *qp, struct ib_qp_init_attr *attrs);
57 int qedr_destroy_gsi_qp(struct qedr_dev *dev);
58 void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info);
59 #endif
60