diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/610-v5.13-15-net-ppp-resolve-forwarding-path-for-bridge-pppoe-dev.patch')
-rw-r--r-- | target/linux/generic/backport-5.10/610-v5.13-15-net-ppp-resolve-forwarding-path-for-bridge-pppoe-dev.patch | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/610-v5.13-15-net-ppp-resolve-forwarding-path-for-bridge-pppoe-dev.patch b/target/linux/generic/backport-5.10/610-v5.13-15-net-ppp-resolve-forwarding-path-for-bridge-pppoe-dev.patch new file mode 100644 index 0000000000..aaa6fd7457 --- /dev/null +++ b/target/linux/generic/backport-5.10/610-v5.13-15-net-ppp-resolve-forwarding-path-for-bridge-pppoe-dev.patch @@ -0,0 +1,113 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Wed, 24 Mar 2021 02:30:36 +0100 +Subject: [PATCH] net: ppp: resolve forwarding path for bridge pppoe + devices + +Pass on the PPPoE session ID, destination hardware address and the real +device. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> +--- + +--- a/drivers/net/ppp/ppp_generic.c ++++ b/drivers/net/ppp/ppp_generic.c +@@ -1450,12 +1450,34 @@ static void ppp_dev_priv_destructor(stru + ppp_destroy_interface(ppp); + } + ++static int ppp_fill_forward_path(struct net_device_path_ctx *ctx, ++ struct net_device_path *path) ++{ ++ struct ppp *ppp = netdev_priv(ctx->dev); ++ struct ppp_channel *chan; ++ struct channel *pch; ++ ++ if (ppp->flags & SC_MULTILINK) ++ return -EOPNOTSUPP; ++ ++ if (list_empty(&ppp->channels)) ++ return -ENODEV; ++ ++ pch = list_first_entry(&ppp->channels, struct channel, clist); ++ chan = pch->chan; ++ if (!chan->ops->fill_forward_path) ++ return -EOPNOTSUPP; ++ ++ return chan->ops->fill_forward_path(ctx, path, chan); ++} ++ + static const struct net_device_ops ppp_netdev_ops = { + .ndo_init = ppp_dev_init, + .ndo_uninit = ppp_dev_uninit, + .ndo_start_xmit = ppp_start_xmit, + .ndo_do_ioctl = ppp_net_ioctl, + .ndo_get_stats64 = ppp_get_stats64, ++ .ndo_fill_forward_path = ppp_fill_forward_path, + }; + + static struct device_type ppp_type = { +--- a/drivers/net/ppp/pppoe.c ++++ b/drivers/net/ppp/pppoe.c +@@ -972,8 +972,31 @@ static int pppoe_xmit(struct ppp_channel + return __pppoe_xmit(sk, skb); + } + ++static int pppoe_fill_forward_path(struct net_device_path_ctx *ctx, ++ struct net_device_path *path, ++ const struct ppp_channel *chan) ++{ ++ struct sock *sk = (struct sock *)chan->private; ++ struct pppox_sock *po = pppox_sk(sk); ++ struct net_device *dev = po->pppoe_dev; ++ ++ if (sock_flag(sk, SOCK_DEAD) || ++ !(sk->sk_state & PPPOX_CONNECTED) || !dev) ++ return -1; ++ ++ path->type = DEV_PATH_PPPOE; ++ path->encap.proto = htons(ETH_P_PPP_SES); ++ path->encap.id = be16_to_cpu(po->num); ++ memcpy(path->encap.h_dest, po->pppoe_pa.remote, ETH_ALEN); ++ path->dev = ctx->dev; ++ ctx->dev = dev; ++ ++ return 0; ++} ++ + static const struct ppp_channel_ops pppoe_chan_ops = { + .start_xmit = pppoe_xmit, ++ .fill_forward_path = pppoe_fill_forward_path, + }; + + static int pppoe_recvmsg(struct socket *sock, struct msghdr *m, +--- a/include/linux/netdevice.h ++++ b/include/linux/netdevice.h +@@ -831,6 +831,7 @@ enum net_device_path_type { + DEV_PATH_ETHERNET = 0, + DEV_PATH_VLAN, + DEV_PATH_BRIDGE, ++ DEV_PATH_PPPOE, + }; + + struct net_device_path { +@@ -840,6 +841,7 @@ struct net_device_path { + struct { + u16 id; + __be16 proto; ++ u8 h_dest[ETH_ALEN]; + } encap; + struct { + enum { +--- a/include/linux/ppp_channel.h ++++ b/include/linux/ppp_channel.h +@@ -28,6 +28,9 @@ struct ppp_channel_ops { + int (*start_xmit)(struct ppp_channel *, struct sk_buff *); + /* Handle an ioctl call that has come in via /dev/ppp. */ + int (*ioctl)(struct ppp_channel *, unsigned int, unsigned long); ++ int (*fill_forward_path)(struct net_device_path_ctx *, ++ struct net_device_path *, ++ const struct ppp_channel *); + }; + + struct ppp_channel { |