diff options
Diffstat (limited to 'include/rdma/ib_addr.h')
| -rw-r--r-- | include/rdma/ib_addr.h | 154 |
1 files changed, 34 insertions, 120 deletions
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h index b73a14edc85e..811a0f11d0db 100644 --- a/include/rdma/ib_addr.h +++ b/include/rdma/ib_addr.h @@ -1,39 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* * Copyright (c) 2005 Voltaire Inc. All rights reserved. * Copyright (c) 2005 Intel Corporation. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. */ -#if !defined(IB_ADDR_H) +#ifndef IB_ADDR_H #define IB_ADDR_H +#include <linux/ethtool.h> #include <linux/in.h> #include <linux/in6.h> #include <linux/if_arp.h> @@ -46,25 +20,8 @@ #include <net/ip.h> #include <rdma/ib_verbs.h> #include <rdma/ib_pack.h> -#include <net/ipv6.h> #include <net/net_namespace.h> -struct rdma_addr_client { - atomic_t refcount; - struct completion comp; -}; - -/** - * rdma_addr_register_client - Register an address client. - */ -void rdma_addr_register_client(struct rdma_addr_client *client); - -/** - * rdma_addr_unregister_client - Deregister an address client. - * @client: Client object to deregister. - */ -void rdma_addr_unregister_client(struct rdma_addr_client *client); - /** * struct rdma_dev_addr - Contains resolved RDMA hardware addresses * @src_dev_addr: Source MAC address. @@ -74,6 +31,7 @@ void rdma_addr_unregister_client(struct rdma_addr_client *client); * @bound_dev_if: An optional device interface index. * @transport: The transport type used. * @net: Network namespace containing the bound_dev_if net_dev. + * @sgid_attr: GID attribute to use for identified SGID */ struct rdma_dev_addr { unsigned char src_dev_addr[MAX_ADDR_LEN]; @@ -83,6 +41,7 @@ struct rdma_dev_addr { int bound_dev_if; enum rdma_transport_type transport; struct net *net; + const struct ib_gid_attr *sgid_attr; enum rdma_network_type network; int hoplimit; }; @@ -94,12 +53,11 @@ struct rdma_dev_addr { * The dev_addr->net field must be initialized. */ int rdma_translate_ip(const struct sockaddr *addr, - struct rdma_dev_addr *dev_addr, u16 *vlan_id); + struct rdma_dev_addr *dev_addr); /** * rdma_resolve_ip - Resolve source and destination IP addresses to * RDMA hardware addresses. - * @client: Address client associated with request. * @src_addr: An optional source address to use in the resolution. If a * source address is not provided, a usable address will be returned via * the callback. @@ -110,31 +68,21 @@ int rdma_translate_ip(const struct sockaddr *addr, * @timeout_ms: Amount of time to wait for the address resolution to complete. * @callback: Call invoked once address resolution has completed, timed out, * or been canceled. A status of 0 indicates success. + * @resolve_by_gid_attr: Resolve the ip based on the GID attribute from + * rdma_dev_addr. * @context: User-specified context associated with the call. */ -int rdma_resolve_ip(struct rdma_addr_client *client, - struct sockaddr *src_addr, struct sockaddr *dst_addr, - struct rdma_dev_addr *addr, int timeout_ms, +int rdma_resolve_ip(struct sockaddr *src_addr, const struct sockaddr *dst_addr, + struct rdma_dev_addr *addr, unsigned long timeout_ms, void (*callback)(int status, struct sockaddr *src_addr, struct rdma_dev_addr *addr, void *context), - void *context); - -int rdma_resolve_ip_route(struct sockaddr *src_addr, - const struct sockaddr *dst_addr, - struct rdma_dev_addr *addr); + bool resolve_by_gid_attr, void *context); void rdma_addr_cancel(struct rdma_dev_addr *addr); -int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev, - const unsigned char *dst_dev_addr); - -int rdma_addr_size(struct sockaddr *addr); - -int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id); -int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid, - const union ib_gid *dgid, - u8 *smac, u16 *vlan_id, int *if_index, - int *hoplimit); +int rdma_addr_size(const struct sockaddr *addr); +int rdma_addr_size_in6(struct sockaddr_in6 *addr); +int rdma_addr_size_kss(struct __kernel_sockaddr_storage *addr); static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr) { @@ -172,7 +120,8 @@ static inline int rdma_ip2gid(struct sockaddr *addr, union ib_gid *gid) (struct in6_addr *)gid); break; case AF_INET6: - memcpy(gid->raw, &((struct sockaddr_in6 *)addr)->sin6_addr, 16); + *(struct in6_addr *)&gid->raw = + ((struct sockaddr_in6 *)addr)->sin6_addr; break; default: return -EINVAL; @@ -196,34 +145,15 @@ static inline void rdma_gid2ip(struct sockaddr *out, const union ib_gid *gid) } } -static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr, - union ib_gid *gid) -{ - struct net_device *dev; - struct in_device *ip4; - - dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); - if (dev) { - ip4 = in_dev_get(dev); - if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address) - ipv6_addr_set_v4mapped(ip4->ifa_list->ifa_address, - (struct in6_addr *)gid); - - if (ip4) - in_dev_put(ip4); - - dev_put(dev); - } -} - +/* + * rdma_get/set_sgid/dgid() APIs are applicable to IB, and iWarp. + * They are not applicable to RoCE. + * RoCE GIDs are derived from the IP addresses. + */ static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) { - if (dev_addr->transport == RDMA_TRANSPORT_IB && - dev_addr->dev_type != ARPHRD_INFINIBAND) - iboe_addr_get_sgid(dev_addr, gid); - else - memcpy(gid, dev_addr->src_dev_addr + - rdma_addr_gid_offset(dev_addr), sizeof *gid); + memcpy(gid, dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), + sizeof(*gid)); } static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid) @@ -244,10 +174,11 @@ static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_g static inline enum ib_mtu iboe_get_mtu(int mtu) { /* - * reduce IB headers from effective IBoE MTU. 28 stands for - * atomic header which is the biggest possible header after BTH + * Reduce IB headers from effective IBoE MTU. */ - mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28; + mtu = mtu - (IB_GRH_BYTES + IB_UDP_BYTES + IB_BTH_BYTES + + IB_EXT_XRC_BYTES + IB_EXT_ATOMICETH_BYTES + + IB_ICRC_BYTES); if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096)) return IB_MTU_4096; @@ -263,29 +194,6 @@ static inline enum ib_mtu iboe_get_mtu(int mtu) return 0; } -static inline int iboe_get_rate(struct net_device *dev) -{ - struct ethtool_link_ksettings cmd; - int err; - - rtnl_lock(); - err = __ethtool_get_link_ksettings(dev, &cmd); - rtnl_unlock(); - if (err) - return IB_RATE_PORT_CURRENT; - - if (cmd.base.speed >= 40000) - return IB_RATE_40_GBPS; - else if (cmd.base.speed >= 30000) - return IB_RATE_30_GBPS; - else if (cmd.base.speed >= 20000) - return IB_RATE_20_GBPS; - else if (cmd.base.speed >= 10000) - return IB_RATE_10_GBPS; - else - return IB_RATE_PORT_CURRENT; -} - static inline int rdma_link_local_addr(struct in6_addr *addr) { if (addr->s6_addr32[0] == htonl(0xfe800000) && @@ -304,7 +212,13 @@ static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac) static inline int rdma_is_multicast_addr(struct in6_addr *addr) { - return addr->s6_addr[0] == 0xff; + __be32 ipv4_addr; + + if (addr->s6_addr[0] == 0xff) + return 1; + + ipv4_addr = addr->s6_addr32[3]; + return (ipv6_addr_v4mapped(addr) && ipv4_is_multicast(ipv4_addr)); } static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac) |