IB/mlx4: Add support for MRA

Using CX-3 in virtualized mode, MAD packets are proxied through the PF
driver. However, the handling lacks support of the MRA (Message Receipt
Acknowledgment) packet. When having dynamic debug enabled, we see tons of:

mlx4_ib_multiplex_cm_handler: id{slave: 7, sl_cm_id: 0x8fcb45a0} is NULL! attr_id: 0x11

Fixes: 3cf69cc8dbeb ("IB/mlx4: Add CM paravirtualization")
Link: https://lore.kernel.org/r/20200803061941.1139994-3-haakon.bugge@oracle.com
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/hw/mlx4/cm.c b/drivers/infiniband/hw/mlx4/cm.c
index 302ea7ec2008f0c44cc4f8538fea2fa25da71c8a..6f0ffd0906e6630be790a6c21ff08375524aeeeb 100644 (file)
--- a/drivers/infiniband/hw/mlx4/cm.c
+++ b/drivers/infiniband/hw/mlx4/cm.c
@@ -293,8 +293,9 @@ int mlx4_ib_multiplex_cm_handler(struct ib_device *ibdev, int port, int slave_id
        int pv_cm_id = -1;
 
        if (mad->mad_hdr.attr_id == CM_REQ_ATTR_ID ||
-                       mad->mad_hdr.attr_id == CM_REP_ATTR_ID ||
-                       mad->mad_hdr.attr_id == CM_SIDR_REQ_ATTR_ID) {
+           mad->mad_hdr.attr_id == CM_REP_ATTR_ID ||
+           mad->mad_hdr.attr_id == CM_MRA_ATTR_ID ||
+           mad->mad_hdr.attr_id == CM_SIDR_REQ_ATTR_ID) {
                sl_cm_id = get_local_comm_id(mad);
                id = id_map_get(ibdev, &pv_cm_id, slave_id, sl_cm_id);
                if (id)