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_H 35 #define RXE_H 36 37 #ifdef pr_fmt 38 #undef pr_fmt 39 #endif 40 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 41 42 #include <linux/module.h> 43 #include <linux/skbuff.h> 44 #include <linux/crc32.h> 45 46 #include <rdma/ib_verbs.h> 47 #include <rdma/ib_user_verbs.h> 48 #include <rdma/ib_pack.h> 49 #include <rdma/ib_smi.h> 50 #include <rdma/ib_umem.h> 51 #include <rdma/ib_cache.h> 52 #include <rdma/ib_addr.h> 53 #include <crypto/hash.h> 54 55 #include "rxe_net.h" 56 #include "rxe_opcode.h" 57 #include "rxe_hdr.h" 58 #include "rxe_param.h" 59 #include "rxe_verbs.h" 60 #include "rxe_loc.h" 61 62 /* 63 * Version 1 and Version 2 are identical on 64 bit machines, but on 32 bit 64 * machines Version 2 has a different struct layout. 65 */ 66 #define RXE_UVERBS_ABI_VERSION 2 67 68 #define IB_PHYS_STATE_LINK_UP (5) 69 #define IB_PHYS_STATE_LINK_DOWN (3) 70 71 #define RXE_ROCE_V2_SPORT (0xc000) 72 73 static inline u32 rxe_crc32(struct rxe_dev *rxe, 74 u32 crc, void *next, size_t len) 75 { 76 u32 retval; 77 int err; 78 79 SHASH_DESC_ON_STACK(shash, rxe->tfm); 80 81 shash->tfm = rxe->tfm; 82 shash->flags = 0; 83 *(u32 *)shash_desc_ctx(shash) = crc; 84 err = crypto_shash_update(shash, next, len); 85 if (unlikely(err)) { 86 pr_warn_ratelimited("failed crc calculation, err: %d\n", err); 87 return crc32_le(crc, next, len); 88 } 89 90 retval = *(u32 *)shash_desc_ctx(shash); 91 barrier_data(shash_desc_ctx(shash)); 92 return retval; 93 } 94 95 int rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu); 96 97 int rxe_add(struct rxe_dev *rxe, unsigned int mtu); 98 void rxe_remove(struct rxe_dev *rxe); 99 void rxe_remove_all(void); 100 101 int rxe_rcv(struct sk_buff *skb); 102 103 static inline void rxe_dev_put(struct rxe_dev *rxe) 104 { 105 kref_put(&rxe->ref_cnt, rxe_release); 106 } 107 struct rxe_dev *net_to_rxe(struct net_device *ndev); 108 struct rxe_dev *get_rxe_by_name(const char *name); 109 110 void rxe_port_up(struct rxe_dev *rxe); 111 void rxe_port_down(struct rxe_dev *rxe); 112 113 #endif /* RXE_H */ 114