diff options
Diffstat (limited to 'net/core/lwtunnel.c')
-rw-r--r-- | net/core/lwtunnel.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c index 669ecc9..e5f84c2 100644 --- a/net/core/lwtunnel.c +++ b/net/core/lwtunnel.c @@ -251,6 +251,41 @@ drop: } EXPORT_SYMBOL(lwtunnel_output); +int lwtunnel_xmit(struct sk_buff *skb) +{ + struct dst_entry *dst = skb_dst(skb); + const struct lwtunnel_encap_ops *ops; + struct lwtunnel_state *lwtstate; + int ret = -EINVAL; + + if (!dst) + goto drop; + + lwtstate = dst->lwtstate; + + if (lwtstate->type == LWTUNNEL_ENCAP_NONE || + lwtstate->type > LWTUNNEL_ENCAP_MAX) + return 0; + + ret = -EOPNOTSUPP; + rcu_read_lock(); + ops = rcu_dereference(lwtun_encaps[lwtstate->type]); + if (likely(ops && ops->xmit)) + ret = ops->xmit(skb); + rcu_read_unlock(); + + if (ret == -EOPNOTSUPP) + goto drop; + + return ret; + +drop: + kfree_skb(skb); + + return ret; +} +EXPORT_SYMBOL(lwtunnel_xmit); + int lwtunnel_input(struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); |