linux-kernel - [PATCH net-next v2] net: bridge: switchdev: pass more port flags to drivers

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Date:   Thu, 12 Aug 2021 22:22:12 +0800
From:   DENG Qingfang <dqfext@...il.com>
To:     Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jiri Pirko <jiri@...nulli.us>,
        Ivan Vecera <ivecera@...hat.com>,
        bridge@...ts.linux-foundation.org (moderated list:ETHERNET BRIDGE),
        netdev@...r.kernel.org (open list:ETHERNET BRIDGE),
        linux-kernel@...r.kernel.org (open list)
Cc:     Ido Schimmel <idosch@...sch.org>,
        Tobias Waldekranz <tobias@...dekranz.com>,
        Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH net-next v2] net: bridge: switchdev: pass more port flags to drivers

These 3 port flags: BR_HAIRPIN_MODE, BR_MULTICAST_TO_UNICAST, and
BR_ISOLATED, affect the data path and should be handled by switchdev
drivers.

Add them to BR_PORT_FLAGS_HW_OFFLOAD so they can be passed down to
the drivers.

Suggested-by: Vladimir Oltean <olteanv@...il.com>
Signed-off-by: DENG Qingfang <dqfext@...il.com>
---
v1 -> v2: added more flags

 net/bridge/br_switchdev.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index 6bf518d78f02..2ab46178c47c 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -70,8 +70,10 @@ bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
 }
 
 /* Flags that can be offloaded to hardware */
-#define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \
-				  BR_MCAST_FLOOD | BR_BCAST_FLOOD)
+#define BR_PORT_FLAGS_HW_OFFLOAD (BR_HAIRPIN_MODE | BR_LEARNING | \
+				  BR_FLOOD | BR_MCAST_FLOOD | \
+				  BR_MULTICAST_TO_UNICAST | \
+				  BR_BCAST_FLOOD | BR_ISOLATED)
 
 int br_switchdev_set_port_flag(struct net_bridge_port *p,
 			       unsigned long flags,
-- 
2.25.1