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RDMA/bnxt_re: Fix the locking while accessing the QP table

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BugLink: https://bugs.launchpad.net/bugs/2099996

[ Upstream commit 9272cba0ded71b5a2084da3004ec7806b8cb7fd2 ]

QP table handling is synchronized with destroy QP and Async
event from the HW. The same needs to be synchronized
during create_qp also. Use the same lock in create_qp also.

Fixes: 76d3ddff7153 ("RDMA/bnxt_re: synchronize the qp-handle table array")
Fixes: f218d67ef0 ("RDMA/bnxt_re: Allow posting when QPs are in error")
Fixes: 84cf229f40 ("RDMA/bnxt_re: Fix the qp table indexing")
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/20241217102649.1377704-6-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit f28fa7625536f5c6e282cdc0b669ad863cda928f linux-6.6.y)
[koichiroden: pulled in follow-up fix from v6.6.70]
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Selvin Xavier
2025-02-25 22:59:22 +09:00
committed by Stefan Bader
parent 1ec45bdb1f
commit d7a819f8f4
1 changed files with 2 additions and 0 deletions
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drivers/infiniband/hw/bnxt_re/qplib_fp.c
+2
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@@ -1173,9 +1173,11 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
rq->dbinfo.db = qp->dpi->dbr;
rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
}
spin_lock_bh(&rcfw->tbl_lock);
tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
spin_unlock_bh(&rcfw->tbl_lock);
return 0;
fail: