forked from luck/tmp_suning_uos_patched
c865f24628
Providers should tell IB core the wc's network type. This is used in order to search for the proper GID in the GID table. When using HCAs that can't provide this info, IB core tries to deep examine the packet and extract the GID type by itself. We choose sgid_index and type from all the matching entries in RDMA-CM based on hint from the IP stack and we set hop_limit for the IP packet based on above hint from IP stack. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Somnath Kotur <Somnath.Kotur@Avagotech.Com> Signed-off-by: Doug Ledford <dledford@redhat.com>
327 lines
9.7 KiB
C
327 lines
9.7 KiB
C
/*
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* Copyright (c) 2005 Voltaire Inc. All rights reserved.
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* Copyright (c) 2005 Intel Corporation. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#if !defined(IB_ADDR_H)
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#define IB_ADDR_H
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#include <linux/in.h>
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#include <linux/in6.h>
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#include <linux/if_arp.h>
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#include <linux/netdevice.h>
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#include <linux/inetdevice.h>
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#include <linux/socket.h>
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#include <linux/if_vlan.h>
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#include <net/ipv6.h>
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#include <net/if_inet6.h>
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#include <net/ip.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_pack.h>
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#include <net/ipv6.h>
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#include <net/net_namespace.h>
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struct rdma_addr_client {
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atomic_t refcount;
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struct completion comp;
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};
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/**
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* rdma_addr_register_client - Register an address client.
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*/
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void rdma_addr_register_client(struct rdma_addr_client *client);
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/**
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* rdma_addr_unregister_client - Deregister an address client.
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* @client: Client object to deregister.
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*/
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void rdma_addr_unregister_client(struct rdma_addr_client *client);
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/**
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* struct rdma_dev_addr - Contains resolved RDMA hardware addresses
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* @src_dev_addr: Source MAC address.
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* @dst_dev_addr: Destination MAC address.
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* @broadcast: Broadcast address of the device.
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* @dev_type: The interface hardware type of the device.
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* @bound_dev_if: An optional device interface index.
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* @transport: The transport type used.
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* @net: Network namespace containing the bound_dev_if net_dev.
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*/
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struct rdma_dev_addr {
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unsigned char src_dev_addr[MAX_ADDR_LEN];
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unsigned char dst_dev_addr[MAX_ADDR_LEN];
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unsigned char broadcast[MAX_ADDR_LEN];
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unsigned short dev_type;
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int bound_dev_if;
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enum rdma_transport_type transport;
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struct net *net;
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enum rdma_network_type network;
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};
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/**
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* rdma_translate_ip - Translate a local IP address to an RDMA hardware
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* address.
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*
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* The dev_addr->net field must be initialized.
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*/
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int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr,
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u16 *vlan_id);
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/**
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* rdma_resolve_ip - Resolve source and destination IP addresses to
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* RDMA hardware addresses.
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* @client: Address client associated with request.
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* @src_addr: An optional source address to use in the resolution. If a
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* source address is not provided, a usable address will be returned via
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* the callback.
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* @dst_addr: The destination address to resolve.
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* @addr: A reference to a data location that will receive the resolved
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* addresses. The data location must remain valid until the callback has
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* been invoked. The net field of the addr struct must be valid.
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* @timeout_ms: Amount of time to wait for the address resolution to complete.
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* @callback: Call invoked once address resolution has completed, timed out,
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* or been canceled. A status of 0 indicates success.
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* @context: User-specified context associated with the call.
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*/
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int rdma_resolve_ip(struct rdma_addr_client *client,
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struct sockaddr *src_addr, struct sockaddr *dst_addr,
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struct rdma_dev_addr *addr, int timeout_ms,
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void (*callback)(int status, struct sockaddr *src_addr,
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struct rdma_dev_addr *addr, void *context),
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void *context);
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void rdma_addr_cancel(struct rdma_dev_addr *addr);
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int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
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const unsigned char *dst_dev_addr);
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int rdma_addr_size(struct sockaddr *addr);
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int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id);
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int rdma_addr_find_dmac_by_grh(const union ib_gid *sgid, const union ib_gid *dgid,
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u8 *smac, u16 *vlan_id, int if_index);
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static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
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{
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return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9];
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}
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static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
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{
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dev_addr->broadcast[8] = pkey >> 8;
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dev_addr->broadcast[9] = (unsigned char) pkey;
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}
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static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr,
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union ib_gid *gid)
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{
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memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
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}
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static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
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{
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return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
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}
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static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
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{
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return dev->priv_flags & IFF_802_1Q_VLAN ?
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vlan_dev_vlan_id(dev) : 0xffff;
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}
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static inline int rdma_ip2gid(struct sockaddr *addr, union ib_gid *gid)
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{
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switch (addr->sa_family) {
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case AF_INET:
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ipv6_addr_set_v4mapped(((struct sockaddr_in *)
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addr)->sin_addr.s_addr,
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(struct in6_addr *)gid);
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break;
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case AF_INET6:
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memcpy(gid->raw, &((struct sockaddr_in6 *)addr)->sin6_addr, 16);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/* Important - sockaddr should be a union of sockaddr_in and sockaddr_in6 */
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static inline void rdma_gid2ip(struct sockaddr *out, const union ib_gid *gid)
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{
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if (ipv6_addr_v4mapped((struct in6_addr *)gid)) {
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struct sockaddr_in *out_in = (struct sockaddr_in *)out;
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memset(out_in, 0, sizeof(*out_in));
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out_in->sin_family = AF_INET;
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memcpy(&out_in->sin_addr.s_addr, gid->raw + 12, 4);
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} else {
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struct sockaddr_in6 *out_in = (struct sockaddr_in6 *)out;
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memset(out_in, 0, sizeof(*out_in));
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out_in->sin6_family = AF_INET6;
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memcpy(&out_in->sin6_addr.s6_addr, gid->raw, 16);
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}
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}
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static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
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union ib_gid *gid)
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{
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struct net_device *dev;
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struct in_device *ip4;
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dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);
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if (dev) {
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ip4 = (struct in_device *)dev->ip_ptr;
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if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address)
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ipv6_addr_set_v4mapped(ip4->ifa_list->ifa_address,
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(struct in6_addr *)gid);
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dev_put(dev);
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}
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}
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static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
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{
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if (dev_addr->transport == RDMA_TRANSPORT_IB &&
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dev_addr->dev_type != ARPHRD_INFINIBAND)
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iboe_addr_get_sgid(dev_addr, gid);
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else
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memcpy(gid, dev_addr->src_dev_addr +
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rdma_addr_gid_offset(dev_addr), sizeof *gid);
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}
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static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
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{
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memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
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}
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static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
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{
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memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
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}
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static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
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{
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memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
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}
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static inline enum ib_mtu iboe_get_mtu(int mtu)
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{
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/*
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* reduce IB headers from effective IBoE MTU. 28 stands for
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* atomic header which is the biggest possible header after BTH
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*/
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mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
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if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
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return IB_MTU_4096;
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else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
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return IB_MTU_2048;
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else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
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return IB_MTU_1024;
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else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
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return IB_MTU_512;
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else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
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return IB_MTU_256;
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else
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return 0;
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}
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static inline int iboe_get_rate(struct net_device *dev)
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{
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struct ethtool_cmd cmd;
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u32 speed;
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int err;
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rtnl_lock();
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err = __ethtool_get_settings(dev, &cmd);
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rtnl_unlock();
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if (err)
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return IB_RATE_PORT_CURRENT;
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speed = ethtool_cmd_speed(&cmd);
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if (speed >= 40000)
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return IB_RATE_40_GBPS;
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else if (speed >= 30000)
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return IB_RATE_30_GBPS;
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else if (speed >= 20000)
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return IB_RATE_20_GBPS;
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else if (speed >= 10000)
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return IB_RATE_10_GBPS;
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else
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return IB_RATE_PORT_CURRENT;
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}
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static inline int rdma_link_local_addr(struct in6_addr *addr)
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{
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if (addr->s6_addr32[0] == htonl(0xfe800000) &&
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addr->s6_addr32[1] == 0)
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return 1;
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return 0;
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}
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static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
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{
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memcpy(mac, &addr->s6_addr[8], 3);
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memcpy(mac + 3, &addr->s6_addr[13], 3);
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mac[0] ^= 2;
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}
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static inline int rdma_is_multicast_addr(struct in6_addr *addr)
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{
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return addr->s6_addr[0] == 0xff;
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}
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static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
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{
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int i;
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mac[0] = 0x33;
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mac[1] = 0x33;
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for (i = 2; i < 6; ++i)
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mac[i] = addr->s6_addr[i + 10];
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}
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static inline u16 rdma_get_vlan_id(union ib_gid *dgid)
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{
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u16 vid;
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vid = dgid->raw[11] << 8 | dgid->raw[12];
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return vid < 0x1000 ? vid : 0xffff;
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}
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static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev)
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{
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return dev->priv_flags & IFF_802_1Q_VLAN ?
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vlan_dev_real_dev(dev) : NULL;
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}
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#endif /* IB_ADDR_H */
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