From 8f6a19c0316deb48cdfdc5335de9a6d7db5b7b62 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Sun, 11 Sep 2022 04:06:58 +0300 Subject: net: dsa: introduce dsa_port_get_master() There is a desire to support for DSA masters in a LAG. That configuration is intended to work by simply enslaving the master to a bonding/team device. But the physical DSA master (the LAG slave) still has a dev->dsa_ptr, and that cpu_dp still corresponds to the physical CPU port. However, we would like to be able to retrieve the LAG that's the upper of the physical DSA master. In preparation for that, introduce a helper called dsa_port_get_master() that replaces all occurrences of the dp->cpu_dp->master pattern. The distinction between LAG and non-LAG will be made later within the helper itself. Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli Signed-off-by: Paolo Abeni --- include/net/dsa.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/net/dsa.h') diff --git a/include/net/dsa.h b/include/net/dsa.h index f2ce12860546..23eac1bda843 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -718,6 +718,11 @@ static inline bool dsa_port_offloads_lag(struct dsa_port *dp, return dsa_port_lag_dev_get(dp) == lag->dev; } +static inline struct net_device *dsa_port_to_master(const struct dsa_port *dp) +{ + return dp->cpu_dp->master; +} + static inline struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) { -- cgit v1.2.3-59-g8ed1b