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 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) */ 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