IB/mlx4: Add support for IBoE
Add support for IBoE to mlx4_ib. The bulk of the code is handling the
new address vector fields; mlx4 needs the MAC address of a remote node
to include it in a WQE (for datagrams) or in the QP context (for
connected QPs). Address resolution is done by assuming all unicast
GIDs are either link-local IPv6 addresses.
Multicast group attach/detach needs to update the NIC's multicast
filters; but since attaching a QP to a multicast group can be done
before the QP is bound to a port, for IBoE we need to keep track of
all multicast groups that a QP is attached too before it transitions
from INIT to RTR (since it does not have a port in the INIT state).
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
[ Many things cleaned up and otherwise monkeyed with; hope I didn't
introduce too many bugs. - Roland ]
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index f38d5b1..c9a8dd6 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -311,19 +311,25 @@
struct ib_mad_agent *agent;
int p, q;
int ret;
+ enum rdma_link_layer ll;
- for (p = 0; p < dev->num_ports; ++p)
+ for (p = 0; p < dev->num_ports; ++p) {
+ ll = rdma_port_get_link_layer(&dev->ib_dev, p + 1);
for (q = 0; q <= 1; ++q) {
- agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
- q ? IB_QPT_GSI : IB_QPT_SMI,
- NULL, 0, send_handler,
- NULL, NULL);
- if (IS_ERR(agent)) {
- ret = PTR_ERR(agent);
- goto err;
- }
- dev->send_agent[p][q] = agent;
+ if (ll == IB_LINK_LAYER_INFINIBAND) {
+ agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
+ q ? IB_QPT_GSI : IB_QPT_SMI,
+ NULL, 0, send_handler,
+ NULL, NULL);
+ if (IS_ERR(agent)) {
+ ret = PTR_ERR(agent);
+ goto err;
+ }
+ dev->send_agent[p][q] = agent;
+ } else
+ dev->send_agent[p][q] = NULL;
}
+ }
return 0;
@@ -344,8 +350,10 @@
for (p = 0; p < dev->num_ports; ++p) {
for (q = 0; q <= 1; ++q) {
agent = dev->send_agent[p][q];
- dev->send_agent[p][q] = NULL;
- ib_unregister_mad_agent(agent);
+ if (agent) {
+ dev->send_agent[p][q] = NULL;
+ ib_unregister_mad_agent(agent);
+ }
}
if (dev->sm_ah[p])