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RDMA/ocrdma: Check resource ids received in Async CQE

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Some versions of the FW sends wrong QP or CQ IDs in the
Async CQE. Adding a check to see whether qp or cq structures
associated with the CQE is valid.

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Naga Irrinki 2015-10-20 14:17:58 +05:30 committed by Doug Ledford
parent fb16d8c49e
commit aeb922df2c
1 changed files with 26 additions and 4 deletions
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30
drivers/infiniband/hw/ocrdma/ocrdma_hw.c
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@ -678,11 +678,33 @@ static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
int dev_event = 0;
int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
u16 qpid = cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK;
u16 cqid = cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK;
if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID)
qp = dev->qp_tbl[cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK];
if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID)
cq = dev->cq_tbl[cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK];
/*
* Some FW version returns wrong qp or cq ids in CQEs.
* Checking whether the IDs are valid
*/
if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID) {
if (qpid < dev->attr.max_qp)
qp = dev->qp_tbl[qpid];
if (qp == NULL) {
pr_err("ocrdma%d:Async event - qpid %u is not valid\n",
dev->id, qpid);
return;
}
}
if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID) {
if (cqid < dev->attr.max_cq)
cq = dev->cq_tbl[cqid];
if (cq == NULL) {
pr_err("ocrdma%d:Async event - cqid %u is not valid\n",
dev->id, cqid);
return;
}
}
memset(&ib_evt, 0, sizeof(ib_evt));