diff options
author | Leon Romanovsky <leonro@mellanox.com> | 2020-02-12 09:26:27 +0200 |
---|---|---|
committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-02-13 11:38:19 -0400 |
commit | ca750d4a9c426854e221ca404fbefeab9800134e (patch) | |
tree | 954162d6942c035fa564e443db6e375afc9d0c8c /drivers | |
parent | beb205dd67aaa4315dedf5c40b47c6e9dee5a469 (diff) |
RDMA/ucma: Mask QPN to be 24 bits according to IBTA
IBTA declares QPN as 24bits, mask input to ensure that kernel
doesn't get higher bits and ensure by adding WANR_ONCE() that
other CM users do the same.
Link: https://lore.kernel.org/r/20200212072635.682689-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/infiniband/core/cm.c | 3 | ||||
-rw-r--r-- | drivers/infiniband/core/ucma.c | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c index 68cc1b2d6824..33c0d9e7bb66 100644 --- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -2188,6 +2188,9 @@ int ib_send_cm_rep(struct ib_cm_id *cm_id, cm_id_priv->initiator_depth = param->initiator_depth; cm_id_priv->responder_resources = param->responder_resources; cm_id_priv->rq_psn = cpu_to_be32(IBA_GET(CM_REP_STARTING_PSN, rep_msg)); + WARN_ONCE(param->qp_num & 0xFF000000, + "IBTA declares QPN to be 24 bits, but it is 0x%X\n", + param->qp_num); cm_id_priv->local_qpn = cpu_to_be32(param->qp_num & 0xFFFFFF); out: spin_unlock_irqrestore(&cm_id_priv->lock, flags); diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 0274e9b704be..57e68491a2fd 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1045,7 +1045,7 @@ static void ucma_copy_conn_param(struct rdma_cm_id *id, dst->retry_count = src->retry_count; dst->rnr_retry_count = src->rnr_retry_count; dst->srq = src->srq; - dst->qp_num = src->qp_num; + dst->qp_num = src->qp_num & 0xFFFFFF; dst->qkey = (id->route.addr.src_addr.ss_family == AF_IB) ? src->qkey : 0; } |