1 files changed, 24 insertions, 2 deletions

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 358f2c82b030..9af2b7853be4 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -74,6 +74,7 @@
 #include <net/checksum.h>
 #include <net/inetpeer.h>
 #include <net/lwtunnel.h>
+#include <linux/bpf-cgroup.h>
 #include <linux/igmp.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter_bridge.h>
@@ -285,6 +286,13 @@ static int ip_finish_output_gso(struct net *net, struct sock *sk,
 static int ip_finish_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
         unsigned int mtu;
+        int ret;
+
+        ret = BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb);
+        if (ret) {
+                kfree_skb(skb);
+                return ret;
+        }
 
 #if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM)
         /* Policy lookup after SNAT yielded a new policy */
@@ -303,6 +311,20 @@ static int ip_finish_output(struct net *net, struct sock *sk, struct sk_buff *sk
         return ip_finish_output2(net, sk, skb);
 }
 
+static int ip_mc_finish_output(struct net *net, struct sock *sk,
+                               struct sk_buff *skb)
+{
+        int ret;
+
+        ret = BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb);
+        if (ret) {
+                kfree_skb(skb);
+                return ret;
+        }
+
+        return dev_loopback_xmit(net, sk, skb);
+}
+
 int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
         struct rtable *rt = skb_rtable(skb);
@@ -340,7 +362,7 @@ int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb)
                         if (newskb)
                                 NF_HOOK(NFPROTO_IPV4, NF_INET_POST_ROUTING,
                                         net, sk, newskb, NULL, newskb->dev,
-                                        dev_loopback_xmit);
+                                        ip_mc_finish_output);
                 }
 
                 /* Multicasts with ttl 0 must not go beyond the host */
@@ -356,7 +378,7 @@ int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb)
                 if (newskb)
                         NF_HOOK(NFPROTO_IPV4, NF_INET_POST_ROUTING,
                                 net, sk, newskb, NULL, newskb->dev,
-                                dev_loopback_xmit);
+                                ip_mc_finish_output);
         }
 
         return NF_HOOK_COND(NFPROTO_IPV4, NF_INET_POST_ROUTING,