1 files changed, 126 insertions, 99 deletions

diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index e060aad8624d..f29450b788be 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -61,15 +61,25 @@ static int brnf_filter_vlan_tagged = 1;
 #define brnf_filter_vlan_tagged 1
 #endif
 
-#define IS_VLAN_IP (skb->protocol == __constant_htons(ETH_P_8021Q) &&    \
-	hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_IP) &&  \
-	brnf_filter_vlan_tagged)
-#define IS_VLAN_IPV6 (skb->protocol == __constant_htons(ETH_P_8021Q) &&    \
-	hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_IPV6) &&  \
-	brnf_filter_vlan_tagged)
-#define IS_VLAN_ARP (skb->protocol == __constant_htons(ETH_P_8021Q) &&   \
-	hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_ARP) && \
-	brnf_filter_vlan_tagged)
+static __be16 inline vlan_proto(const struct sk_buff *skb)
+{
+	return vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
+}
+
+#define IS_VLAN_IP(skb) \
+	(skb->protocol == htons(ETH_P_8021Q) && \
+ 	 vlan_proto(skb) == htons(ETH_P_IP) && 	\
+	 brnf_filter_vlan_tagged)
+
+#define IS_VLAN_IPV6(skb) \
+	(skb->protocol == htons(ETH_P_8021Q) && \
+	 vlan_proto(skb) == htons(ETH_P_IPV6) &&\
+	 brnf_filter_vlan_tagged)
+
+#define IS_VLAN_ARP(skb) \
+	(skb->protocol == htons(ETH_P_8021Q) &&	\
+	 vlan_proto(skb) == htons(ETH_P_ARP) &&	\
+	 brnf_filter_vlan_tagged)
 
 /* We need these fake structures to make netfilter happy --
  * lots of places assume that skb->dst != NULL, which isn't
@@ -103,6 +113,25 @@ static inline struct net_device *bridge_parent(const struct net_device *dev)
 	return port ? port->br->dev : NULL;
 }
 
+static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
+{
+	skb->nf_bridge = kzalloc(sizeof(struct nf_bridge_info), GFP_ATOMIC);
+	if (likely(skb->nf_bridge))
+		atomic_set(&(skb->nf_bridge->use), 1);
+
+	return skb->nf_bridge;
+}
+
+static inline void nf_bridge_save_header(struct sk_buff *skb)
+{
+        int header_size = 16;
+
+	if (skb->protocol == htons(ETH_P_8021Q))
+		header_size = 18;
+
+	memcpy(skb->nf_bridge->data, skb->data - header_size, header_size);
+}
+
 /* PF_BRIDGE/PRE_ROUTING *********************************************/
 /* Undo the changes made for ip6tables PREROUTING and continue the
  * bridge PRE_ROUTING hook. */
@@ -120,7 +149,7 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
 	dst_hold(skb->dst);
 
 	skb->dev = nf_bridge->physindev;
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_push(skb, VLAN_HLEN);
 		skb->nh.raw -= VLAN_HLEN;
 	}
@@ -136,7 +165,7 @@ static void __br_dnat_complain(void)
 
 	if (jiffies - last_complaint >= 5 * HZ) {
 		printk(KERN_WARNING "Performing cross-bridge DNAT requires IP "
-			"forwarding to be enabled\n");
+		       "forwarding to be enabled\n");
 		last_complaint = jiffies;
 	}
 }
@@ -196,7 +225,7 @@ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
 	if (!skb->dev)
 		kfree_skb(skb);
 	else {
-		if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+		if (skb->protocol == htons(ETH_P_8021Q)) {
 			skb_pull(skb, VLAN_HLEN);
 			skb->nh.raw += VLAN_HLEN;
 		}
@@ -218,12 +247,17 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
 	nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING;
 
 	if (dnat_took_place(skb)) {
-		if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
-		    dev)) {
+		if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev)) {
 			struct rtable *rt;
-			struct flowi fl = { .nl_u = 
-			{ .ip4_u = { .daddr = iph->daddr, .saddr = 0 ,
-				     .tos = RT_TOS(iph->tos)} }, .proto = 0};
+			struct flowi fl = {
+				.nl_u = {
+					.ip4_u = {
+						 .daddr = iph->daddr,
+						 .saddr = 0,
+						 .tos = RT_TOS(iph->tos) },
+				},
+				.proto = 0,
+			};
 
 			if (!ip_route_output_key(&rt, &fl)) {
 				/* - Bridged-and-DNAT'ed traffic doesn't
@@ -247,7 +281,7 @@ bridged_dnat:
 				nf_bridge->mask |= BRNF_BRIDGED_DNAT;
 				skb->dev = nf_bridge->physindev;
 				if (skb->protocol ==
-				    __constant_htons(ETH_P_8021Q)) {
+				    htons(ETH_P_8021Q)) {
 					skb_push(skb, VLAN_HLEN);
 					skb->nh.raw -= VLAN_HLEN;
 				}
@@ -257,8 +291,7 @@ bridged_dnat:
 					       1);
 				return 0;
 			}
-			memcpy(eth_hdr(skb)->h_dest, dev->dev_addr,
-			       ETH_ALEN);
+			memcpy(eth_hdr(skb)->h_dest, dev->dev_addr, ETH_ALEN);
 			skb->pkt_type = PACKET_HOST;
 		}
 	} else {
@@ -267,7 +300,7 @@ bridged_dnat:
 	}
 
 	skb->dev = nf_bridge->physindev;
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_push(skb, VLAN_HLEN);
 		skb->nh.raw -= VLAN_HLEN;
 	}
@@ -297,10 +330,10 @@ static struct net_device *setup_pre_routing(struct sk_buff *skb)
 /* We only check the length. A bridge shouldn't do any hop-by-hop stuff anyway */
 static int check_hbh_len(struct sk_buff *skb)
 {
-	unsigned char *raw = (u8*)(skb->nh.ipv6h+1);
+	unsigned char *raw = (u8 *) (skb->nh.ipv6h + 1);
 	u32 pkt_len;
 	int off = raw - skb->nh.raw;
-	int len = (raw[1]+1)<<3;
+	int len = (raw[1] + 1) << 3;
 
 	if ((raw + len) - skb->data > skb_headlen(skb))
 		goto bad;
@@ -309,7 +342,7 @@ static int check_hbh_len(struct sk_buff *skb)
 	len -= 2;
 
 	while (len > 0) {
-		int optlen = skb->nh.raw[off+1]+2;
+		int optlen = skb->nh.raw[off + 1] + 2;
 
 		switch (skb->nh.raw[off]) {
 		case IPV6_TLV_PAD0:
@@ -320,16 +353,16 @@ static int check_hbh_len(struct sk_buff *skb)
 			break;
 
 		case IPV6_TLV_JUMBO:
-			if (skb->nh.raw[off+1] != 4 || (off&3) != 2)
+			if (skb->nh.raw[off + 1] != 4 || (off & 3) != 2)
 				goto bad;
-			pkt_len = ntohl(*(u32*)(skb->nh.raw+off+2));
+			pkt_len = ntohl(*(u32 *) (skb->nh.raw + off + 2));
 			if (pkt_len <= IPV6_MAXPLEN ||
 			    skb->nh.ipv6h->payload_len)
 				goto bad;
 			if (pkt_len > skb->len - sizeof(struct ipv6hdr))
 				goto bad;
 			if (pskb_trim_rcsum(skb,
-			    pkt_len+sizeof(struct ipv6hdr)))
+					    pkt_len + sizeof(struct ipv6hdr)))
 				goto bad;
 			break;
 		default:
@@ -350,12 +383,13 @@ bad:
 /* Replicate the checks that IPv6 does on packet reception and pass the packet
  * to ip6tables, which doesn't support NAT, so things are fairly simple. */
 static unsigned int br_nf_pre_routing_ipv6(unsigned int hook,
-   struct sk_buff *skb, const struct net_device *in,
-   const struct net_device *out, int (*okfn)(struct sk_buff *))
+					   struct sk_buff *skb,
+					   const struct net_device *in,
+					   const struct net_device *out,
+					   int (*okfn)(struct sk_buff *))
 {
 	struct ipv6hdr *hdr;
 	u32 pkt_len;
-	struct nf_bridge_info *nf_bridge;
 
 	if (skb->len < sizeof(struct ipv6hdr))
 		goto inhdr_error;
@@ -381,10 +415,10 @@ static unsigned int br_nf_pre_routing_ipv6(unsigned int hook,
 		}
 	}
 	if (hdr->nexthdr == NEXTHDR_HOP && check_hbh_len(skb))
-			goto inhdr_error;
+		goto inhdr_error;
 
- 	nf_bridge_put(skb->nf_bridge);
-	if ((nf_bridge = nf_bridge_alloc(skb)) == NULL)
+	nf_bridge_put(skb->nf_bridge);
+	if (!nf_bridge_alloc(skb))
 		return NF_DROP;
 	if (!setup_pre_routing(skb))
 		return NF_DROP;
@@ -412,10 +446,8 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
 	struct iphdr *iph;
 	__u32 len;
 	struct sk_buff *skb = *pskb;
-	struct nf_bridge_info *nf_bridge;
-	struct vlan_ethhdr *hdr = vlan_eth_hdr(*pskb);
 
-	if (skb->protocol == __constant_htons(ETH_P_IPV6) || IS_VLAN_IPV6) {
+	if (skb->protocol == htons(ETH_P_IPV6) || IS_VLAN_IPV6(skb)) {
 #ifdef CONFIG_SYSCTL
 		if (!brnf_call_ip6tables)
 			return NF_ACCEPT;
@@ -423,10 +455,8 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
 		if ((skb = skb_share_check(*pskb, GFP_ATOMIC)) == NULL)
 			goto out;
 
-		if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-			u8 *vhdr = skb->data;
-			skb_pull(skb, VLAN_HLEN);
-			skb_postpull_rcsum(skb, vhdr, VLAN_HLEN);
+		if (skb->protocol == htons(ETH_P_8021Q)) {
+			skb_pull_rcsum(skb, VLAN_HLEN);
 			skb->nh.raw += VLAN_HLEN;
 		}
 		return br_nf_pre_routing_ipv6(hook, skb, in, out, okfn);
@@ -436,16 +466,14 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
 		return NF_ACCEPT;
 #endif
 
-	if (skb->protocol != __constant_htons(ETH_P_IP) && !IS_VLAN_IP)
+	if (skb->protocol != htons(ETH_P_IP) && !IS_VLAN_IP(skb))
 		return NF_ACCEPT;
 
 	if ((skb = skb_share_check(*pskb, GFP_ATOMIC)) == NULL)
 		goto out;
 
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
-		u8 *vhdr = skb->data;
-		skb_pull(skb, VLAN_HLEN);
-		skb_postpull_rcsum(skb, vhdr, VLAN_HLEN);
+	if (skb->protocol == htons(ETH_P_8021Q)) {
+		skb_pull_rcsum(skb, VLAN_HLEN);
 		skb->nh.raw += VLAN_HLEN;
 	}
 
@@ -456,15 +484,15 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
 	if (iph->ihl < 5 || iph->version != 4)
 		goto inhdr_error;
 
-	if (!pskb_may_pull(skb, 4*iph->ihl))
+	if (!pskb_may_pull(skb, 4 * iph->ihl))
 		goto inhdr_error;
 
 	iph = skb->nh.iph;
-	if (ip_fast_csum((__u8 *)iph, iph->ihl) != 0)
+	if (ip_fast_csum((__u8 *) iph, iph->ihl) != 0)
 		goto inhdr_error;
 
 	len = ntohs(iph->tot_len);
-	if (skb->len < len || len < 4*iph->ihl)
+	if (skb->len < len || len < 4 * iph->ihl)
 		goto inhdr_error;
 
 	if (skb->len > len) {
@@ -473,8 +501,8 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
 			skb->ip_summed = CHECKSUM_NONE;
 	}
 
- 	nf_bridge_put(skb->nf_bridge);
-	if ((nf_bridge = nf_bridge_alloc(skb)) == NULL)
+	nf_bridge_put(skb->nf_bridge);
+	if (!nf_bridge_alloc(skb))
 		return NF_DROP;
 	if (!setup_pre_routing(skb))
 		return NF_DROP;
@@ -486,7 +514,7 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
 	return NF_STOLEN;
 
 inhdr_error:
-//	IP_INC_STATS_BH(IpInHdrErrors);
+//      IP_INC_STATS_BH(IpInHdrErrors);
 out:
 	return NF_DROP;
 }
@@ -500,8 +528,9 @@ out:
  * register an IPv4 PRE_ROUTING 'sabotage' hook that will
  * prevent this from happening. */
 static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				   const struct net_device *in,
+				   const struct net_device *out,
+				   int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *skb = *pskb;
 
@@ -513,15 +542,13 @@ static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff **pskb,
 	return NF_ACCEPT;
 }
 
-
 /* PF_BRIDGE/FORWARD *************************************************/
 static int br_nf_forward_finish(struct sk_buff *skb)
 {
 	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
 	struct net_device *in;
-	struct vlan_ethhdr *hdr = vlan_eth_hdr(skb);
 
-	if (skb->protocol != __constant_htons(ETH_P_ARP) && !IS_VLAN_ARP) {
+	if (skb->protocol != htons(ETH_P_ARP) && !IS_VLAN_ARP(skb)) {
 		in = nf_bridge->physindev;
 		if (nf_bridge->mask & BRNF_PKT_TYPE) {
 			skb->pkt_type = PACKET_OTHERHOST;
@@ -530,12 +557,12 @@ static int br_nf_forward_finish(struct sk_buff *skb)
 	} else {
 		in = *((struct net_device **)(skb->cb));
 	}
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_push(skb, VLAN_HLEN);
 		skb->nh.raw -= VLAN_HLEN;
 	}
 	NF_HOOK_THRESH(PF_BRIDGE, NF_BR_FORWARD, skb, in,
-			skb->dev, br_forward_finish, 1);
+		       skb->dev, br_forward_finish, 1);
 	return 0;
 }
 
@@ -545,12 +572,12 @@ static int br_nf_forward_finish(struct sk_buff *skb)
  * because of the physdev module. For ARP, indev and outdev are the
  * bridge ports. */
 static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				     const struct net_device *in,
+				     const struct net_device *out,
+				     int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *skb = *pskb;
 	struct nf_bridge_info *nf_bridge;
-	struct vlan_ethhdr *hdr = vlan_eth_hdr(skb);
 	struct net_device *parent;
 	int pf;
 
@@ -561,12 +588,12 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
 	if (!parent)
 		return NF_DROP;
 
-	if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP)
+	if (skb->protocol == htons(ETH_P_IP) || IS_VLAN_IP(skb))
 		pf = PF_INET;
 	else
 		pf = PF_INET6;
 
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_pull(*pskb, VLAN_HLEN);
 		(*pskb)->nh.raw += VLAN_HLEN;
 	}
@@ -588,11 +615,11 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
 }
 
 static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				      const struct net_device *in,
+				      const struct net_device *out,
+				      int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *skb = *pskb;
-	struct vlan_ethhdr *hdr = vlan_eth_hdr(skb);
 	struct net_device **d = (struct net_device **)(skb->cb);
 
 #ifdef CONFIG_SYSCTL
@@ -600,15 +627,15 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
 		return NF_ACCEPT;
 #endif
 
-	if (skb->protocol != __constant_htons(ETH_P_ARP)) {
-		if (!IS_VLAN_ARP)
+	if (skb->protocol != htons(ETH_P_ARP)) {
+		if (!IS_VLAN_ARP(skb))
 			return NF_ACCEPT;
 		skb_pull(*pskb, VLAN_HLEN);
 		(*pskb)->nh.raw += VLAN_HLEN;
 	}
 
 	if (skb->nh.arph->ar_pln != 4) {
-		if (IS_VLAN_ARP) {
+		if (IS_VLAN_ARP(skb)) {
 			skb_push(*pskb, VLAN_HLEN);
 			(*pskb)->nh.raw -= VLAN_HLEN;
 		}
@@ -621,17 +648,16 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
 	return NF_STOLEN;
 }
 
-
 /* PF_BRIDGE/LOCAL_OUT ***********************************************/
 static int br_nf_local_out_finish(struct sk_buff *skb)
 {
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_push(skb, VLAN_HLEN);
 		skb->nh.raw -= VLAN_HLEN;
 	}
 
 	NF_HOOK_THRESH(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
-			br_forward_finish, NF_BR_PRI_FIRST + 1);
+		       br_forward_finish, NF_BR_PRI_FIRST + 1);
 
 	return 0;
 }
@@ -657,19 +683,19 @@ static int br_nf_local_out_finish(struct sk_buff *skb)
  * even routed packets that didn't arrive on a bridge interface have their
  * nf_bridge->physindev set. */
 static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				    const struct net_device *in,
+				    const struct net_device *out,
+				    int (*okfn)(struct sk_buff *))
 {
 	struct net_device *realindev, *realoutdev;
 	struct sk_buff *skb = *pskb;
 	struct nf_bridge_info *nf_bridge;
-	struct vlan_ethhdr *hdr = vlan_eth_hdr(skb);
 	int pf;
 
 	if (!skb->nf_bridge)
 		return NF_ACCEPT;
 
-	if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP)
+	if (skb->protocol == htons(ETH_P_IP) || IS_VLAN_IP(skb))
 		pf = PF_INET;
 	else
 		pf = PF_INET6;
@@ -695,7 +721,7 @@ static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
 			skb->pkt_type = PACKET_OTHERHOST;
 			nf_bridge->mask ^= BRNF_PKT_TYPE;
 		}
-		if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+		if (skb->protocol == htons(ETH_P_8021Q)) {
 			skb_push(skb, VLAN_HLEN);
 			skb->nh.raw -= VLAN_HLEN;
 		}
@@ -713,14 +739,14 @@ static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
 	if (nf_bridge->netoutdev)
 		realoutdev = nf_bridge->netoutdev;
 #endif
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_pull(skb, VLAN_HLEN);
 		(*pskb)->nh.raw += VLAN_HLEN;
 	}
 	/* IP forwarded traffic has a physindev, locally
 	 * generated traffic hasn't. */
 	if (realindev != NULL) {
-		if (!(nf_bridge->mask & BRNF_DONT_TAKE_PARENT) ) {
+		if (!(nf_bridge->mask & BRNF_DONT_TAKE_PARENT)) {
 			struct net_device *parent = bridge_parent(realindev);
 			if (parent)
 				realindev = parent;
@@ -742,12 +768,12 @@ out:
 
 /* PF_BRIDGE/POST_ROUTING ********************************************/
 static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				       const struct net_device *in,
+				       const struct net_device *out,
+				       int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *skb = *pskb;
 	struct nf_bridge_info *nf_bridge = (*pskb)->nf_bridge;
-	struct vlan_ethhdr *hdr = vlan_eth_hdr(skb);
 	struct net_device *realoutdev = bridge_parent(skb->dev);
 	int pf;
 
@@ -756,7 +782,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
 	 * keep the check just to be sure... */
 	if (skb->mac.raw < skb->head || skb->mac.raw + ETH_HLEN > skb->data) {
 		printk(KERN_CRIT "br_netfilter: Argh!! br_nf_post_routing: "
-				 "bad mac.raw pointer.");
+		       "bad mac.raw pointer.");
 		goto print_error;
 	}
 #endif
@@ -767,7 +793,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
 	if (!realoutdev)
 		return NF_DROP;
 
-	if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP)
+	if (skb->protocol == htons(ETH_P_IP) || IS_VLAN_IP(skb))
 		pf = PF_INET;
 	else
 		pf = PF_INET6;
@@ -786,7 +812,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
 		nf_bridge->mask |= BRNF_PKT_TYPE;
 	}
 
-	if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+	if (skb->protocol == htons(ETH_P_8021Q)) {
 		skb_pull(skb, VLAN_HLEN);
 		skb->nh.raw += VLAN_HLEN;
 	}
@@ -798,7 +824,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
 		realoutdev = nf_bridge->netoutdev;
 #endif
 	NF_HOOK(pf, NF_IP_POST_ROUTING, skb, NULL, realoutdev,
-	        br_dev_queue_push_xmit);
+		br_dev_queue_push_xmit);
 
 	return NF_STOLEN;
 
@@ -810,18 +836,18 @@ print_error:
 			printk("[%s]", realoutdev->name);
 	}
 	printk(" head:%p, raw:%p, data:%p\n", skb->head, skb->mac.raw,
-					      skb->data);
+	       skb->data);
 	return NF_ACCEPT;
 #endif
 }
 
-
 /* IP/SABOTAGE *****************************************************/
 /* Don't hand locally destined packets to PF_INET(6)/PRE_ROUTING
  * for the second time. */
 static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				   const struct net_device *in,
+				   const struct net_device *out,
+				   int (*okfn)(struct sk_buff *))
 {
 	if ((*pskb)->nf_bridge &&
 	    !((*pskb)->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
@@ -835,18 +861,18 @@ static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff **pskb,
  * and PF_INET(6)/POST_ROUTING until we have done the forwarding
  * decision in the bridge code and have determined nf_bridge->physoutdev. */
 static unsigned int ip_sabotage_out(unsigned int hook, struct sk_buff **pskb,
-   const struct net_device *in, const struct net_device *out,
-   int (*okfn)(struct sk_buff *))
+				    const struct net_device *in,
+				    const struct net_device *out,
+				    int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *skb = *pskb;
 
 	if ((out->hard_start_xmit == br_dev_xmit &&
-	    okfn != br_nf_forward_finish &&
-	    okfn != br_nf_local_out_finish &&
-	    okfn != br_dev_queue_push_xmit)
+	     okfn != br_nf_forward_finish &&
+	     okfn != br_nf_local_out_finish && okfn != br_dev_queue_push_xmit)
 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
 	    || ((out->priv_flags & IFF_802_1Q_VLAN) &&
-	    VLAN_DEV_INFO(out)->real_dev->hard_start_xmit == br_dev_xmit)
+		VLAN_DEV_INFO(out)->real_dev->hard_start_xmit == br_dev_xmit)
 #endif
 	    ) {
 		struct nf_bridge_info *nf_bridge;
@@ -971,8 +997,8 @@ static struct nf_hook_ops br_nf_ops[] = {
 
 #ifdef CONFIG_SYSCTL
 static
-int brnf_sysctl_call_tables(ctl_table *ctl, int write, struct file * filp,
-			void __user *buffer, size_t *lenp, loff_t *ppos)
+int brnf_sysctl_call_tables(ctl_table * ctl, int write, struct file *filp,
+			    void __user * buffer, size_t * lenp, loff_t * ppos)
 {
 	int ret;
 
@@ -1059,7 +1085,8 @@ int br_netfilter_init(void)
 #ifdef CONFIG_SYSCTL
 	brnf_sysctl_header = register_sysctl_table(brnf_net_table, 0);
 	if (brnf_sysctl_header == NULL) {
-		printk(KERN_WARNING "br_netfilter: can't register to sysctl.\n");
+		printk(KERN_WARNING
+		       "br_netfilter: can't register to sysctl.\n");
 		for (i = 0; i < ARRAY_SIZE(br_nf_ops); i++)
 			nf_unregister_hook(&br_nf_ops[i]);
 		return -EFAULT;