326 lines
9.6 KiB
C
326 lines
9.6 KiB
C
/*
|
|
* 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)
|
|
#define IB_ADDR_H
|
|
|
|
#include <linux/in.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/inetdevice.h>
|
|
#include <linux/socket.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <net/ipv6.h>
|
|
#include <net/if_inet6.h>
|
|
#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.
|
|
* @dst_dev_addr: Destination MAC address.
|
|
* @broadcast: Broadcast address of the device.
|
|
* @dev_type: The interface hardware type of the device.
|
|
* @bound_dev_if: An optional device interface index.
|
|
* @transport: The transport type used.
|
|
* @net: Network namespace containing the bound_dev_if net_dev.
|
|
*/
|
|
struct rdma_dev_addr {
|
|
unsigned char src_dev_addr[MAX_ADDR_LEN];
|
|
unsigned char dst_dev_addr[MAX_ADDR_LEN];
|
|
unsigned char broadcast[MAX_ADDR_LEN];
|
|
unsigned short dev_type;
|
|
int bound_dev_if;
|
|
enum rdma_transport_type transport;
|
|
struct net *net;
|
|
};
|
|
|
|
/**
|
|
* rdma_translate_ip - Translate a local IP address to an RDMA hardware
|
|
* address.
|
|
*
|
|
* The dev_addr->net field must be initialized.
|
|
*/
|
|
int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr,
|
|
u16 *vlan_id);
|
|
|
|
/**
|
|
* 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.
|
|
* @dst_addr: The destination address to resolve.
|
|
* @addr: A reference to a data location that will receive the resolved
|
|
* addresses. The data location must remain valid until the callback has
|
|
* been invoked. The net field of the addr struct must be valid.
|
|
* @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.
|
|
* @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,
|
|
void (*callback)(int status, struct sockaddr *src_addr,
|
|
struct rdma_dev_addr *addr, void *context),
|
|
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_dmac_by_grh(const union ib_gid *sgid, const union ib_gid *dgid,
|
|
u8 *smac, u16 *vlan_id, int if_index);
|
|
|
|
static inline u16 ib_addr_get_pkey(struct rdma_dev_addr *dev_addr)
|
|
{
|
|
return ((u16)dev_addr->broadcast[8] << 8) | (u16)dev_addr->broadcast[9];
|
|
}
|
|
|
|
static inline void ib_addr_set_pkey(struct rdma_dev_addr *dev_addr, u16 pkey)
|
|
{
|
|
dev_addr->broadcast[8] = pkey >> 8;
|
|
dev_addr->broadcast[9] = (unsigned char) pkey;
|
|
}
|
|
|
|
static inline void ib_addr_get_mgid(struct rdma_dev_addr *dev_addr,
|
|
union ib_gid *gid)
|
|
{
|
|
memcpy(gid, dev_addr->broadcast + 4, sizeof *gid);
|
|
}
|
|
|
|
static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
|
|
{
|
|
return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
|
|
}
|
|
|
|
static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
|
|
{
|
|
return dev->priv_flags & IFF_802_1Q_VLAN ?
|
|
vlan_dev_vlan_id(dev) : 0xffff;
|
|
}
|
|
|
|
static inline int rdma_ip2gid(struct sockaddr *addr, union ib_gid *gid)
|
|
{
|
|
switch (addr->sa_family) {
|
|
case AF_INET:
|
|
ipv6_addr_set_v4mapped(((struct sockaddr_in *)
|
|
addr)->sin_addr.s_addr,
|
|
(struct in6_addr *)gid);
|
|
break;
|
|
case AF_INET6:
|
|
memcpy(gid->raw, &((struct sockaddr_in6 *)addr)->sin6_addr, 16);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Important - sockaddr should be a union of sockaddr_in and sockaddr_in6 */
|
|
static inline void rdma_gid2ip(struct sockaddr *out, const union ib_gid *gid)
|
|
{
|
|
if (ipv6_addr_v4mapped((struct in6_addr *)gid)) {
|
|
struct sockaddr_in *out_in = (struct sockaddr_in *)out;
|
|
memset(out_in, 0, sizeof(*out_in));
|
|
out_in->sin_family = AF_INET;
|
|
memcpy(&out_in->sin_addr.s_addr, gid->raw + 12, 4);
|
|
} else {
|
|
struct sockaddr_in6 *out_in = (struct sockaddr_in6 *)out;
|
|
memset(out_in, 0, sizeof(*out_in));
|
|
out_in->sin6_family = AF_INET6;
|
|
memcpy(&out_in->sin6_addr.s6_addr, gid->raw, 16);
|
|
}
|
|
}
|
|
|
|
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 = (struct in_device *)dev->ip_ptr;
|
|
if (ip4 && ip4->ifa_list && ip4->ifa_list->ifa_address)
|
|
ipv6_addr_set_v4mapped(ip4->ifa_list->ifa_address,
|
|
(struct in6_addr *)gid);
|
|
dev_put(dev);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
|
|
{
|
|
memcpy(dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
|
|
}
|
|
|
|
static inline void rdma_addr_get_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
|
|
{
|
|
memcpy(gid, dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
|
|
}
|
|
|
|
static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
|
|
{
|
|
memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
|
|
}
|
|
|
|
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
|
|
*/
|
|
mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
|
|
|
|
if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
|
|
return IB_MTU_4096;
|
|
else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
|
|
return IB_MTU_2048;
|
|
else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
|
|
return IB_MTU_1024;
|
|
else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
|
|
return IB_MTU_512;
|
|
else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
|
|
return IB_MTU_256;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline int iboe_get_rate(struct net_device *dev)
|
|
{
|
|
struct ethtool_cmd cmd;
|
|
u32 speed;
|
|
int err;
|
|
|
|
rtnl_lock();
|
|
err = __ethtool_get_settings(dev, &cmd);
|
|
rtnl_unlock();
|
|
if (err)
|
|
return IB_RATE_PORT_CURRENT;
|
|
|
|
speed = ethtool_cmd_speed(&cmd);
|
|
if (speed >= 40000)
|
|
return IB_RATE_40_GBPS;
|
|
else if (speed >= 30000)
|
|
return IB_RATE_30_GBPS;
|
|
else if (speed >= 20000)
|
|
return IB_RATE_20_GBPS;
|
|
else if (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) &&
|
|
addr->s6_addr32[1] == 0)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
|
|
{
|
|
memcpy(mac, &addr->s6_addr[8], 3);
|
|
memcpy(mac + 3, &addr->s6_addr[13], 3);
|
|
mac[0] ^= 2;
|
|
}
|
|
|
|
static inline int rdma_is_multicast_addr(struct in6_addr *addr)
|
|
{
|
|
return addr->s6_addr[0] == 0xff;
|
|
}
|
|
|
|
static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
|
|
{
|
|
int i;
|
|
|
|
mac[0] = 0x33;
|
|
mac[1] = 0x33;
|
|
for (i = 2; i < 6; ++i)
|
|
mac[i] = addr->s6_addr[i + 10];
|
|
}
|
|
|
|
static inline u16 rdma_get_vlan_id(union ib_gid *dgid)
|
|
{
|
|
u16 vid;
|
|
|
|
vid = dgid->raw[11] << 8 | dgid->raw[12];
|
|
return vid < 0x1000 ? vid : 0xffff;
|
|
}
|
|
|
|
static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev)
|
|
{
|
|
return dev->priv_flags & IFF_802_1Q_VLAN ?
|
|
vlan_dev_real_dev(dev) : NULL;
|
|
}
|
|
|
|
#endif /* IB_ADDR_H */
|