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Commit 511c3f92 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

net: skb->rtable accessor 



Define skb_rtable(const struct sk_buff *skb) accessor to get rtable from skb

Delete skb->rtable field

Setting rtable is not allowed, just set dst instead as rtable is an alias.

Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dfbf97f3

drivers/net/appletalk/ipddp.c

+1 −1
Original line number Diff line number Diff line
@@ -115,7 +115,7 @@ static struct net_device * __init ipddp_init(void) 
 */

static int ipddp_xmit(struct sk_buff *skb, struct net_device *dev)

{

	__be32 paddr = ((struct rtable*)skb->dst)->rt_gateway;

	__be32 paddr = skb_rtable(skb)->rt_gateway;

        struct ddpehdr *ddp;

        struct ipddp_route *rt;

        struct atalk_addr *our_addr;

include/linux/skbuff.h

+5 −1
Original line number Diff line number Diff line
@@ -324,7 +324,6 @@ struct sk_buff { 


	union {

		struct  dst_entry	*dst;

		struct  rtable		*rtable;

		unsigned long		_skb_dst;

	};

#ifdef CONFIG_XFRM
@@ -427,6 +426,11 @@ extern void skb_dma_unmap(struct device *dev, struct sk_buff *skb, 
			  enum dma_data_direction dir);

#endif



static inline struct rtable *skb_rtable(const struct sk_buff *skb)

{

	return (struct rtable *)skb->_skb_dst;

}



extern void kfree_skb(struct sk_buff *skb);

extern void consume_skb(struct sk_buff *skb);

extern void	       __kfree_skb(struct sk_buff *skb);

include/net/route.h

+1 −1
Original line number Diff line number Diff line
@@ -210,7 +210,7 @@ static inline struct inet_peer *rt_get_peer(struct rtable *rt) 


static inline int inet_iif(const struct sk_buff *skb)

{

	return skb->rtable->rt_iif;

	return skb_rtable(skb)->rt_iif;

}



#endif	/* _ROUTE_H */

net/bridge/br_netfilter.c

+15 −10
Original line number Diff line number Diff line
@@ -228,6 +228,7 @@ int nf_bridge_copy_header(struct sk_buff *skb) 
static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)

{

	struct nf_bridge_info *nf_bridge = skb->nf_bridge;

	struct rtable *rt;



	if (nf_bridge->mask & BRNF_PKT_TYPE) {

		skb->pkt_type = PACKET_OTHERHOST;
@@ -235,12 +236,13 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb) 
	}

	nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING;



	skb->rtable = bridge_parent_rtable(nf_bridge->physindev);

	if (!skb->rtable) {

	rt = bridge_parent_rtable(nf_bridge->physindev);

	if (!rt) {

		kfree_skb(skb);

		return 0;

	}

	dst_hold(&skb->rtable->u.dst);

	dst_hold(&rt->u.dst);

	skb->dst = &rt->u.dst;



	skb->dev = nf_bridge->physindev;

	nf_bridge_push_encap_header(skb);
@@ -338,6 +340,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb) 
	struct net_device *dev = skb->dev;

	struct iphdr *iph = ip_hdr(skb);

	struct nf_bridge_info *nf_bridge = skb->nf_bridge;

	struct rtable *rt;

	int err;



	if (nf_bridge->mask & BRNF_PKT_TYPE) {
@@ -347,7 +350,6 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb) 
	nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING;

	if (dnat_took_place(skb)) {

		if ((err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev))) {

			struct rtable *rt;

			struct flowi fl = {

				.nl_u = {

					.ip4_u = {
@@ -404,12 +406,13 @@ bridged_dnat: 
			skb->pkt_type = PACKET_HOST;

		}

	} else {

		skb->rtable = bridge_parent_rtable(nf_bridge->physindev);

		if (!skb->rtable) {

		rt = bridge_parent_rtable(nf_bridge->physindev);

		if (!rt) {

			kfree_skb(skb);

			return 0;

		}

		dst_hold(&skb->rtable->u.dst);

		dst_hold(&rt->u.dst);

		skb->dst = &rt->u.dst;

	}



	skb->dev = nf_bridge->physindev;
@@ -628,9 +631,11 @@ static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff *skb, 
				   const struct net_device *out,

				   int (*okfn)(struct sk_buff *))

{

	if (skb->rtable && skb->rtable == bridge_parent_rtable(in)) {

		dst_release(&skb->rtable->u.dst);

		skb->rtable = NULL;

	struct rtable *rt = skb_rtable(skb);



	if (rt && rt == bridge_parent_rtable(in)) {

		dst_release(&rt->u.dst);

		skb->dst = NULL;

	}



	return NF_ACCEPT;

net/dccp/ipv4.c

+3 −3
Original line number Diff line number Diff line
@@ -452,7 +452,7 @@ static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk, 
					   struct sk_buff *skb)

{

	struct rtable *rt;

	struct flowi fl = { .oif = skb->rtable->rt_iif,

	struct flowi fl = { .oif = skb_rtable(skb)->rt_iif,

			    .nl_u = { .ip4_u =

				      { .daddr = ip_hdr(skb)->saddr,

					.saddr = ip_hdr(skb)->daddr,
@@ -514,7 +514,7 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb) 
	if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)

		return;



	if (rxskb->rtable->rt_type != RTN_LOCAL)

	if (skb_rtable(rxskb)->rt_type != RTN_LOCAL)

		return;



	dst = dccp_v4_route_skb(net, ctl_sk, rxskb);
@@ -567,7 +567,7 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb) 
	struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);



	/* Never answer to DCCP_PKT_REQUESTs send to broadcast or multicast */

	if (skb->rtable->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))

	if (skb_rtable(skb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))

		return 0;	/* discard, don't send a reset here */



	if (dccp_bad_service_code(sk, service)) {