IB/core: Don't resolve passive side RoCE L2 address in CMA REQ handler
The code that resolves the passive side source MAC within the rdma_cm
connection request handler was both redundant and buggy, so remove it.
It was redundant since later, when an RC QP is modified to RTR state,
the resolution will take place in the ib_core module. It was buggy
because this callback also deals with UD SIDR exchange, for which we
incorrectly looked at the REQ member of the CM event and dereferenced
a random value.
Fixes: dd5f03beb4f7 ("IB/core: Ethernet L2 attributes in verbs/cm structures")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 0601b9d..c323917 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -349,23 +349,6 @@
grh, &av->ah_attr);
}
-int ib_update_cm_av(struct ib_cm_id *id, const u8 *smac, const u8 *alt_smac)
-{
- struct cm_id_private *cm_id_priv;
-
- cm_id_priv = container_of(id, struct cm_id_private, id);
-
- if (smac != NULL)
- memcpy(cm_id_priv->av.smac, smac, sizeof(cm_id_priv->av.smac));
-
- if (alt_smac != NULL)
- memcpy(cm_id_priv->alt_av.smac, alt_smac,
- sizeof(cm_id_priv->alt_av.smac));
-
- return 0;
-}
-EXPORT_SYMBOL(ib_update_cm_av);
-
static int cm_init_av_by_path(struct ib_sa_path_rec *path, struct cm_av *av)
{
struct cm_device *cm_dev;
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 199958d..42c3058 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1284,15 +1284,6 @@
struct rdma_id_private *listen_id, *conn_id;
struct rdma_cm_event event;
int offset, ret;
- u8 smac[ETH_ALEN];
- u8 alt_smac[ETH_ALEN];
- u8 *psmac = smac;
- u8 *palt_smac = alt_smac;
- int is_iboe = ((rdma_node_get_transport(cm_id->device->node_type) ==
- RDMA_TRANSPORT_IB) &&
- (rdma_port_get_link_layer(cm_id->device,
- ib_event->param.req_rcvd.port) ==
- IB_LINK_LAYER_ETHERNET));
listen_id = cm_id->context;
if (!cma_check_req_qp_type(&listen_id->id, ib_event))
@@ -1336,28 +1327,11 @@
ret = conn_id->id.event_handler(&conn_id->id, &event);
if (ret)
goto err3;
-
- if (is_iboe) {
- if (ib_event->param.req_rcvd.primary_path != NULL)
- rdma_addr_find_smac_by_sgid(
- &ib_event->param.req_rcvd.primary_path->sgid,
- psmac, NULL);
- else
- psmac = NULL;
- if (ib_event->param.req_rcvd.alternate_path != NULL)
- rdma_addr_find_smac_by_sgid(
- &ib_event->param.req_rcvd.alternate_path->sgid,
- palt_smac, NULL);
- else
- palt_smac = NULL;
- }
/*
* Acquire mutex to prevent user executing rdma_destroy_id()
* while we're accessing the cm_id.
*/
mutex_lock(&lock);
- if (is_iboe)
- ib_update_cm_av(cm_id, psmac, palt_smac);
if (cma_comp(conn_id, RDMA_CM_CONNECT) &&
(conn_id->id.qp_type != IB_QPT_UD))
ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0);
diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h
index f29e3a2..0e3ff30 100644
--- a/include/rdma/ib_cm.h
+++ b/include/rdma/ib_cm.h
@@ -601,5 +601,4 @@
int ib_send_cm_sidr_rep(struct ib_cm_id *cm_id,
struct ib_cm_sidr_rep_param *param);
-int ib_update_cm_av(struct ib_cm_id *id, const u8 *smac, const u8 *alt_smac);
#endif /* IB_CM_H */