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authorDavid Ahern <dsa@cumulusnetworks.com>2016-09-10 12:09:53 -0700
committerDavid S. Miller <davem@davemloft.net>2016-09-10 23:12:52 -0700
commita8e3e1a9f02094145580ea7920c6a1d9aabd5539 (patch)
tree1bedde4339e71fa07c4f73d27cfc807ec9220120 /net
parent9ee0034b8f49aaaa7e7c2da8db1038915db99c19 (diff)
net: l3mdev: Add hook to output path
This patch adds the infrastructure to the output path to pass an skb to an l3mdev device if it has a hook registered. This is the Tx parallel to l3mdev_ip{6}_rcv in the receive path and is the basis for removing the existing hook that returns the vrf dst on the fib lookup. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/ip_output.c8
-rw-r--r--net/ipv6/ip6_output.c8
-rw-r--r--net/ipv6/output_core.c7
-rw-r--r--net/ipv6/raw.c7
4 files changed, 30 insertions, 0 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index b913f5bf0757..41e10e34769c 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -99,6 +99,14 @@ int __ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb)
iph->tot_len = htons(skb->len);
ip_send_check(iph);
+
+ /* if egress device is enslaved to an L3 master device pass the
+ * skb to its handler for processing
+ */
+ skb = l3mdev_ip_out(sk, skb);
+ if (unlikely(!skb))
+ return 0;
+
return nf_hook(NFPROTO_IPV4, NF_INET_LOCAL_OUT,
net, sk, skb, NULL, skb_dst(skb)->dev,
dst_output);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 993fd9666f1b..6ea6caace3a8 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -236,6 +236,14 @@ int ip6_xmit(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
if ((skb->len <= mtu) || skb->ignore_df || skb_is_gso(skb)) {
IP6_UPD_PO_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUT, skb->len);
+
+ /* if egress device is enslaved to an L3 master device pass the
+ * skb to its handler for processing
+ */
+ skb = l3mdev_ip6_out((struct sock *)sk, skb);
+ if (unlikely(!skb))
+ return 0;
+
/* hooks should never assume socket lock is held.
* we promote our socket to non const
*/
diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index 462f2a76b5c2..7cca8ac66fe9 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -148,6 +148,13 @@ int __ip6_local_out(struct net *net, struct sock *sk, struct sk_buff *skb)
ipv6_hdr(skb)->payload_len = htons(len);
IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);
+ /* if egress device is enslaved to an L3 master device pass the
+ * skb to its handler for processing
+ */
+ skb = l3mdev_ip6_out(sk, skb);
+ if (unlikely(!skb))
+ return 0;
+
return nf_hook(NFPROTO_IPV6, NF_INET_LOCAL_OUT,
net, sk, skb, NULL, skb_dst(skb)->dev,
dst_output);
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 590dd1f7746f..54404f08efcc 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -653,6 +653,13 @@ static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length,
if (err)
goto error_fault;
+ /* if egress device is enslaved to an L3 master device pass the
+ * skb to its handler for processing
+ */
+ skb = l3mdev_ip6_out(sk, skb);
+ if (unlikely(!skb))
+ return 0;
+
IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, sk, skb,
NULL, rt->dst.dev, dst_output);