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From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 4 Mar 2021 23:19:06 +0100
Subject: [PATCH] net: dsa: resolve forwarding path for dsa slave ports
Add .ndo_fill_forward_path for dsa slave port devices
---
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -838,6 +838,7 @@ enum net_device_path_type {
DEV_PATH_VLAN,
DEV_PATH_BRIDGE,
DEV_PATH_PPPOE,
+ DEV_PATH_DSA,
};
struct net_device_path {
@@ -857,6 +858,10 @@ struct net_device_path {
u16 vlan_id;
__be16 vlan_proto;
} bridge;
+ struct {
+ int port;
+ u16 proto;
+ } dsa;
};
};
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1582,6 +1582,21 @@ static struct devlink_port *dsa_slave_ge
return dp->ds->devlink ? &dp->devlink_port : NULL;
}
+static int dsa_slave_fill_forward_path(struct net_device_path_ctx *ctx,
+ struct net_device_path *path)
+{
+ struct dsa_port *dp = dsa_slave_to_port(ctx->dev);
+ struct dsa_port *cpu_dp = dp->cpu_dp;
+
+ path->dev = ctx->dev;
+ path->type = DEV_PATH_DSA;
+ path->dsa.proto = cpu_dp->tag_ops->proto;
+ path->dsa.port = dp->index;
+ ctx->dev = cpu_dp->master;
+
+ return 0;
+}
+
static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_open = dsa_slave_open,
.ndo_stop = dsa_slave_close,
@@ -1607,6 +1622,7 @@ static const struct net_device_ops dsa_s
.ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
.ndo_get_devlink_port = dsa_slave_get_devlink_port,
.ndo_change_mtu = dsa_slave_change_mtu,
+ .ndo_fill_forward_path = dsa_slave_fill_forward_path,
};
static struct device_type dsa_type = {
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