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authorVladimir Oltean <vladimir.oltean@nxp.com>2021-06-29 23:32:15 +0300
committerDavid S. Miller <davem@davemloft.net>2021-07-01 11:29:42 -0700
commitb71d09871566a20ae8a1064e50f1e94813b18482 (patch)
tree6bdd2fe53cb76839265930e2b65cd20099ede840 /net
parente6a16043fd3f60823835bbbaf7c81c455059a0d4 (diff)
net: dsa: return -EOPNOTSUPP when driver does not implement .port_lag_join
The DSA core has a layered structure, and even though we end up returning 0 (success) to user space when setting a bonding/team upper that can't be offloaded, some parts of the framework actually need to know that we couldn't offload that. For example, if dsa_switch_lag_join returns 0 as it currently does, dsa_port_lag_join has no way to tell a successful offload from a software fallback, and it will call dsa_port_bridge_join afterwards. Then we'll think we're offloading the bridge master of the LAG, when in fact we're not even offloading the LAG. In turn, this will make us set skb->offload_fwd_mark = true, which is incorrect and the bridge doesn't like it. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/dsa/switch.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index af71b8638098..248455145982 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -427,7 +427,7 @@ static int dsa_switch_lag_join(struct dsa_switch *ds,
info->port, info->lag,
info->info);
- return 0;
+ return -EOPNOTSUPP;
}
static int dsa_switch_lag_leave(struct dsa_switch *ds,
@@ -440,7 +440,7 @@ static int dsa_switch_lag_leave(struct dsa_switch *ds,
return ds->ops->crosschip_lag_leave(ds, info->sw_index,
info->port, info->lag);
- return 0;
+ return -EOPNOTSUPP;
}
static int dsa_switch_mdb_add(struct dsa_switch *ds,