[PATCH 8/25 v2] rdma/cm: Restrict AF_IB loopback to binding to IB devices only
From: Hefty, Sean <hidden>
Date: 2011-12-20 21:44:07
Subsystem:
infiniband subsystem, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
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 <redacted> --- drivers/infiniband/core/cma.c | 28 ++++++++++++++++++++-------- 1 files changed, 20 insertions(+), 8 deletions(-)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index e5bfc84..11915bf 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c@@ -1965,26 +1965,38 @@ 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); --
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