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bnxt_en: Reserve rings after PCIe AER recovery if NIC interface is down

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BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit 5311598f7f3293683cdc761df71ae3469327332c ]

After successful PCIe AER recovery, FW will reset all resource
reservations.  If it is IF_UP, the driver will call bnxt_open() and
all resources will be reserved again.  It it is IF_DOWN, we should
call bnxt_reserve_rings() so that we can reserve resources including
RoCE resources to allow RoCE to resume after AER.  Without this
patch, RoCE fails to resume in this IF_DOWN scenario.

Later, if it becomes IF_UP, bnxt_open() will see that resources have
been reserved and will not reserve again.

Fixes: fb1e6e562b ("bnxt_en: Fix AER recovery.")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Saravanan Vajravel
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 17384766b1
commit cb88e94480
1 changed files with 6 additions and 2 deletions
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drivers/net/ethernet/broadcom/bnxt/bnxt.c
+6 -2
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@@ -15179,8 +15179,12 @@ static void bnxt_io_resume(struct pci_dev *pdev)
rtnl_lock();
err = bnxt_hwrm_func_qcaps(bp);
if (!err && netif_running(netdev))
err = bnxt_open(netdev);
if (!err) {
if (netif_running(netdev))
err = bnxt_open(netdev);
else
err = bnxt_reserve_rings(bp, true);
}
bnxt_ulp_start(bp, err);
if (!err) {