1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /*
3 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
5 */
6
7 #ifndef RXE_H
8 #define RXE_H
9
10 #ifdef pr_fmt
11 #undef pr_fmt
12 #endif
13 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15 #include <linux/module.h>
16 #include <linux/skbuff.h>
17 #include <linux/crc32.h>
18
19 #include <rdma/ib_verbs.h>
20 #include <rdma/ib_user_verbs.h>
21 #include <rdma/ib_pack.h>
22 #include <rdma/ib_smi.h>
23 #include <rdma/ib_umem.h>
24 #include <rdma/ib_cache.h>
25 #include <rdma/ib_addr.h>
26 #include <crypto/hash.h>
27
28 #include "rxe_net.h"
29 #include "rxe_opcode.h"
30 #include "rxe_hdr.h"
31 #include "rxe_param.h"
32 #include "rxe_verbs.h"
33 #include "rxe_loc.h"
34
35 /*
36 * Version 1 and Version 2 are identical on 64 bit machines, but on 32 bit
37 * machines Version 2 has a different struct layout.
38 */
39 #define RXE_UVERBS_ABI_VERSION 2
40
41 #define RXE_ROCE_V2_SPORT (0xc000)
42
43 extern bool rxe_initialized;
44
rxe_crc32(struct rxe_dev * rxe,u32 crc,void * next,size_t len)45 static inline u32 rxe_crc32(struct rxe_dev *rxe,
46 u32 crc, void *next, size_t len)
47 {
48 u32 retval;
49 int err;
50
51 SHASH_DESC_ON_STACK(shash, rxe->tfm);
52
53 shash->tfm = rxe->tfm;
54 *(u32 *)shash_desc_ctx(shash) = crc;
55 err = crypto_shash_update(shash, next, len);
56 if (unlikely(err)) {
57 pr_warn_ratelimited("failed crc calculation, err: %d\n", err);
58 return crc32_le(crc, next, len);
59 }
60
61 retval = *(u32 *)shash_desc_ctx(shash);
62 barrier_data(shash_desc_ctx(shash));
63 return retval;
64 }
65
66 void rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu);
67
68 int rxe_add(struct rxe_dev *rxe, unsigned int mtu, const char *ibdev_name);
69
70 void rxe_rcv(struct sk_buff *skb);
71
72 /* The caller must do a matching ib_device_put(&dev->ib_dev) */
rxe_get_dev_from_net(struct net_device * ndev)73 static inline struct rxe_dev *rxe_get_dev_from_net(struct net_device *ndev)
74 {
75 struct ib_device *ibdev =
76 ib_device_get_by_netdev(ndev, RDMA_DRIVER_RXE);
77
78 if (!ibdev)
79 return NULL;
80 return container_of(ibdev, struct rxe_dev, ib_dev);
81 }
82
83 void rxe_port_up(struct rxe_dev *rxe);
84 void rxe_port_down(struct rxe_dev *rxe);
85 void rxe_set_port_state(struct rxe_dev *rxe);
86
87 #endif /* RXE_H */
88