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authorDavid Ahern <dsa@cumulusnetworks.com>2016-07-04 18:47:41 -0700
committerDavid S. Miller <davem@davemloft.net>2016-07-05 11:50:05 -0700
commit73e20b761acf8678de2d55d92b90a623b8558a77 (patch)
treedc072e0c887e95e6d9e75474d5b26617176ba659 /drivers/net/vrf.c
parent8297f2d9ef6c2c31c87807f2f110ddfd0c379443 (diff)
net: vrf: Add support for PREROUTING rules on vrf device
Add support for PREROUTING rules with skb->dev set to the vrf device. INPUT rules are already allowed. Provides symmetry with the output path which allows POSTROUTING rules. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vrf.c')
-rw-r--r--drivers/net/vrf.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index b3762822b653..1ce7420322ee 100644
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -779,6 +779,25 @@ static int vrf_get_saddr(struct net_device *dev, struct flowi4 *fl4)
return rc;
}
+static int vrf_rcv_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
+{
+ return 0;
+}
+
+static struct sk_buff *vrf_rcv_nfhook(u8 pf, unsigned int hook,
+ struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct net *net = dev_net(dev);
+
+ nf_reset(skb);
+
+ if (NF_HOOK(pf, hook, net, NULL, skb, dev, NULL, vrf_rcv_finish) < 0)
+ skb = NULL; /* kfree_skb(skb) handled by nf code */
+
+ return skb;
+}
+
#if IS_ENABLED(CONFIG_IPV6)
/* neighbor handling is done with actual device; do not want
* to flip skb->dev for those ndisc packets. This really fails
@@ -899,6 +918,7 @@ static struct sk_buff *vrf_ip6_rcv(struct net_device *vrf_dev,
if (need_strict)
vrf_ip6_input_dst(skb, vrf_dev, orig_iif);
+ skb = vrf_rcv_nfhook(NFPROTO_IPV6, NF_INET_PRE_ROUTING, skb, vrf_dev);
out:
return skb;
}
@@ -929,6 +949,7 @@ static struct sk_buff *vrf_ip_rcv(struct net_device *vrf_dev,
dev_queue_xmit_nit(skb, vrf_dev);
skb_pull(skb, skb->mac_len);
+ skb = vrf_rcv_nfhook(NFPROTO_IPV4, NF_INET_PRE_ROUTING, skb, vrf_dev);
out:
return skb;
}