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RDMA/addr: Keep pointer to netdevice in struct rdma_dev_addr

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Keep a pointer to the local (src) netdevice in struct rdma_dev_addr,
and copy it in as part of rdma_copy_addr().  Use rdma_translate_ip()
in cma_new_conn_id() to reduce some code duplication and also make
sure the src_dev member gets set.

In a high-availability configuration the netdevice pointer can be used
by the RDMA CM to align RDMA sessions to use the same links as the IP
stack does under fail-over and route change cases.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Or Gerlitz 2008-07-14 23:48:53 -07:00 committed by Roland Dreier
parent 4ab928f692
commit 64c5e613b9
3 changed files with 7 additions and 3 deletions
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1
drivers/infiniband/core/addr.c
View File

@ -105,6 +105,7 @@ int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
memcpy(dev_addr->broadcast, dev->broadcast, MAX_ADDR_LEN);
if (dst_dev_addr)
memcpy(dev_addr->dst_dev_addr, dst_dev_addr, MAX_ADDR_LEN);
dev_addr->src_dev = dev;
return 0;
}
EXPORT_SYMBOL(rdma_copy_addr);

8
drivers/infiniband/core/cma.c
View File

@ -1002,6 +1002,7 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id,
union cma_ip_addr *src, *dst;
__be16 port;
u8 ip_ver;
int ret;
if (cma_get_net_info(ib_event->private_data, listen_id->ps,
&ip_ver, &port, &src, &dst))
@ -1026,10 +1027,11 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id,
if (rt->num_paths == 2)
rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path;
ib_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid);
ib_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid);
ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey));
rt->addr.dev_addr.dev_type = RDMA_NODE_IB_CA;
ret = rdma_translate_ip(&id->route.addr.src_addr,
&id->route.addr.dev_addr);
if (ret)
goto destroy_id;
id_priv = container_of(id, struct rdma_id_private, id);
id_priv->state = CMA_CONNECT;

1
include/rdma/ib_addr.h
View File

@ -61,6 +61,7 @@ struct rdma_dev_addr {
unsigned char dst_dev_addr[MAX_ADDR_LEN];
unsigned char broadcast[MAX_ADDR_LEN];
enum rdma_node_type dev_type;
struct net_device *src_dev;
};
/**