diff mbox series

[net] ice: block default rule setting on LAG interface

Message ID 20231005163330.3219008-1-anthony.l.nguyen@intel.com (mailing list archive)
State Accepted
Commit 776fe19953b0e0af00399e50fb3b205101d4b3c1
Delegated to: Netdev Maintainers
Headers show
Series [net] ice: block default rule setting on LAG interface | expand

Checks

Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1340 this patch: 1340
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 1363 this patch: 1363
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 1364 this patch: 1364
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 52 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Tony Nguyen Oct. 5, 2023, 4:33 p.m. UTC
From: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>

When one of the LAG interfaces is in switchdev mode, setting default rule
can't be done.

The interface on which switchdev is running has ice_set_rx_mode() blocked
to avoid default rule adding (and other rules). The other interfaces
(without switchdev running but connected via bond with interface that
runs switchdev) can't follow the same scheme, because rx filtering needs
to be disabled when failover happens. Notification for bridge to set
promisc mode seems like good place to do that.

Fixes: bb52f42acef6 ("ice: Add driver support for firmware changes for LAG")
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_lag.c | 32 ++++++++++++++++++++++++
 drivers/net/ethernet/intel/ice/ice_lag.h |  1 +
 drivers/net/ethernet/intel/ice/ice_lib.c |  6 +++++
 3 files changed, 39 insertions(+)

Comments

patchwork-bot+netdevbpf@kernel.org Oct. 8, 2023, 4:41 p.m. UTC | #1
Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Thu,  5 Oct 2023 09:33:30 -0700 you wrote:
> From: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
> 
> When one of the LAG interfaces is in switchdev mode, setting default rule
> can't be done.
> 
> The interface on which switchdev is running has ice_set_rx_mode() blocked
> to avoid default rule adding (and other rules). The other interfaces
> (without switchdev running but connected via bond with interface that
> runs switchdev) can't follow the same scheme, because rx filtering needs
> to be disabled when failover happens. Notification for bridge to set
> promisc mode seems like good place to do that.
> 
> [...]

Here is the summary with links:
  - [net] ice: block default rule setting on LAG interface
    https://git.kernel.org/netdev/net/c/776fe19953b0

You are awesome, thank you!
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c b/drivers/net/ethernet/intel/ice/ice_lag.c
index 4f39863b5537..7b1256992dcf 100644
--- a/drivers/net/ethernet/intel/ice/ice_lag.c
+++ b/drivers/net/ethernet/intel/ice/ice_lag.c
@@ -2093,3 +2093,35 @@  void ice_lag_rebuild(struct ice_pf *pf)
 	}
 	mutex_unlock(&pf->lag_mutex);
 }
+
+/**
+ * ice_lag_is_switchdev_running
+ * @pf: pointer to PF structure
+ *
+ * Check if switchdev is running on any of the interfaces connected to lag.
+ */
+bool ice_lag_is_switchdev_running(struct ice_pf *pf)
+{
+	struct ice_lag *lag = pf->lag;
+	struct net_device *tmp_nd;
+
+	if (!ice_is_feature_supported(pf, ICE_F_SRIOV_LAG) || !lag)
+		return false;
+
+	rcu_read_lock();
+	for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) {
+		struct ice_netdev_priv *priv = netdev_priv(tmp_nd);
+
+		if (!netif_is_ice(tmp_nd) || !priv || !priv->vsi ||
+		    !priv->vsi->back)
+			continue;
+
+		if (ice_is_switchdev_running(priv->vsi->back)) {
+			rcu_read_unlock();
+			return true;
+		}
+	}
+	rcu_read_unlock();
+
+	return false;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_lag.h b/drivers/net/ethernet/intel/ice/ice_lag.h
index 18075b82485a..facb6c894b6d 100644
--- a/drivers/net/ethernet/intel/ice/ice_lag.h
+++ b/drivers/net/ethernet/intel/ice/ice_lag.h
@@ -62,4 +62,5 @@  void ice_lag_move_new_vf_nodes(struct ice_vf *vf);
 int ice_init_lag(struct ice_pf *pf);
 void ice_deinit_lag(struct ice_pf *pf);
 void ice_lag_rebuild(struct ice_pf *pf);
+bool ice_lag_is_switchdev_running(struct ice_pf *pf);
 #endif /* _ICE_LAG_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 201570cd2e0b..7bf9b7069754 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -3575,6 +3575,12 @@  int ice_set_dflt_vsi(struct ice_vsi *vsi)
 
 	dev = ice_pf_to_dev(vsi->back);
 
+	if (ice_lag_is_switchdev_running(vsi->back)) {
+		dev_dbg(dev, "VSI %d passed is a part of LAG containing interfaces in switchdev mode, nothing to do\n",
+			vsi->vsi_num);
+		return 0;
+	}
+
 	/* the VSI passed in is already the default VSI */
 	if (ice_is_vsi_dflt_vsi(vsi)) {
 		dev_dbg(dev, "VSI %d passed in is already the default forwarding VSI, nothing to do\n",