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RDMA/cma: Restrict AF_IB loopback to binding to IB devices only 

If a user specifies AF_IB as the source address for a loopback
connection, limit the resolution to IB devices only.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sean Hefty 2013-05-29 10:09:15 -07:00 committed by Roland Dreier
parent f4753834b5
commit b0569e4075
1 changed files with 20 additions and 8 deletions
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28
drivers/infiniband/core/cma.c
View File

@ -1981,26 +1981,38 @@ static void cma_set_loopback(struct sockaddr *addr)
static int cma_bind_loopback(struct rdma_id_private *id_priv)
{
struct cma_device *cma_dev;
struct cma_device *cma_dev, *cur_dev;
struct ib_port_attr port_attr;
union ib_gid gid;
u16 pkey;
int ret;
u8 p;
cma_dev = NULL;
mutex_lock(&lock);
if (list_empty(&dev_list)) {
list_for_each_entry(cur_dev, &dev_list, list) {
if (cma_family(id_priv) == AF_IB &&
rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB)
continue;
if (!cma_dev)
cma_dev = cur_dev;
for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) {
if (!ib_query_port(cur_dev->device, p, &port_attr) &&
port_attr.state == IB_PORT_ACTIVE) {
cma_dev = cur_dev;
goto port_found;
}
}
}
if (!cma_dev) {
ret = -ENODEV;
goto out;
}
list_for_each_entry(cma_dev, &dev_list, list)
for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p)
if (!ib_query_port(cma_dev->device, p, &port_attr) &&
port_attr.state == IB_PORT_ACTIVE)
goto port_found;
p = 1;
cma_dev = list_entry(dev_list.next, struct cma_device, list);
port_found:
ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid);