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/infiniband/core/cm.c | |
| 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/infiniband/core/cm.c')
| -rw-r--r-- | drivers/infiniband/core/cm.c | 3 |
1 files changed, 3 insertions, 0 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); |