diff options
| author | Edwin Peer <edwin.peer@broadcom.com> | 2021-11-15 02:37:59 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-15 14:13:20 +0000 |
| commit | 46d08f55d24e69e921456b5a40717da09199267b (patch) | |
| tree | 12bfb4df6bdf06bef7e23ecf8545c39528617fd1 /drivers/net/ethernet/broadcom/bnxt | |
| parent | e97b21e94652f5f0d1c196452c111151f6d15883 (diff) | |
bnxt_en: extend RTNL to VF check in devlink driver_reinit
The fixes the race condition between configuring SR-IOV and devlink
reload. The SR-IOV configure logic already takes the RTNL lock,
setting sriov_cfg under the lock while changes are underway. Extend
the lock scope in devlink driver_reinit to cover the VF check and
don't run concurrently with SR-IOV configure.
Reported-by: Leon Romanovsky <leon@kernel.org>
Fixes: 228ea8c187d8 ("bnxt_en: implement devlink dev reload driver_reinit")
Cc: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c index 5c464ea73576..a0a9af402642 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c @@ -441,12 +441,13 @@ static int bnxt_dl_reload_down(struct devlink *dl, bool netns_change, switch (action) { case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: { - if (BNXT_PF(bp) && bp->pf.active_vfs) { + rtnl_lock(); + if (BNXT_PF(bp) && (bp->pf.active_vfs || bp->sriov_cfg)) { NL_SET_ERR_MSG_MOD(extack, - "reload is unsupported when VFs are allocated"); + "reload is unsupported while VFs are allocated or being configured"); + rtnl_unlock(); return -EOPNOTSUPP; } - rtnl_lock(); if (bp->dev->reg_state == NETREG_UNREGISTERED) { rtnl_unlock(); return -ENODEV; |