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authorEric Dumazet <eric.dumazet@gmail.com>2009-06-02 05:19:30 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-03 02:51:04 -0700
commitadf30907d63893e4208dfe3f5c88ae12bc2f25d5 (patch)
tree0f07542bb95de2ad537540868aba6cf87a86e17d /net
parent511c3f92ad5b6d9f8f6464be1b4f85f0422be91a (diff)
downloadlinux-2.6.34-ux500-adf30907d63893e4208dfe3f5c88ae12bc2f25d5.tar.gz
net: skb->dst accessors
Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/atm/br2684.c2
-rw-r--r--net/atm/clip.c14
-rw-r--r--net/bridge/br_netfilter.c18
-rw-r--r--net/core/dev.c7
-rw-r--r--net/core/neighbour.c11
-rw-r--r--net/core/skbuff.c4
-rw-r--r--net/dccp/ipv4.c4
-rw-r--r--net/dccp/ipv6.c8
-rw-r--r--net/dccp/output.c2
-rw-r--r--net/decnet/af_decnet.c6
-rw-r--r--net/decnet/dn_neigh.c8
-rw-r--r--net/decnet/dn_nsp_out.c6
-rw-r--r--net/decnet/dn_route.c25
-rw-r--r--net/ipv4/arp.c2
-rw-r--r--net/ipv4/icmp.c10
-rw-r--r--net/ipv4/igmp.c4
-rw-r--r--net/ipv4/ip_forward.c4
-rw-r--r--net/ipv4/ip_fragment.c2
-rw-r--r--net/ipv4/ip_gre.c23
-rw-r--r--net/ipv4/ip_input.c6
-rw-r--r--net/ipv4/ip_options.c6
-rw-r--r--net/ipv4/ip_output.c20
-rw-r--r--net/ipv4/ipip.c13
-rw-r--r--net/ipv4/ipmr.c13
-rw-r--r--net/ipv4/netfilter.c28
-rw-r--r--net/ipv4/netfilter/ipt_REJECT.c7
-rw-r--r--net/ipv4/netfilter/nf_nat_standalone.c7
-rw-r--r--net/ipv4/raw.c2
-rw-r--r--net/ipv4/route.c14
-rw-r--r--net/ipv4/tcp_ipv4.c4
-rw-r--r--net/ipv4/tcp_output.c2
-rw-r--r--net/ipv4/udp.c4
-rw-r--r--net/ipv4/xfrm4_input.c2
-rw-r--r--net/ipv4/xfrm4_mode_tunnel.c4
-rw-r--r--net/ipv4/xfrm4_output.c6
-rw-r--r--net/ipv6/exthdrs.c40
-rw-r--r--net/ipv6/inet6_connection_sock.c2
-rw-r--r--net/ipv6/ip6_input.c12
-rw-r--r--net/ipv6/ip6_output.c60
-rw-r--r--net/ipv6/ip6_tunnel.c26
-rw-r--r--net/ipv6/ip6mr.c13
-rw-r--r--net/ipv6/mcast.c17
-rw-r--r--net/ipv6/ndisc.c4
-rw-r--r--net/ipv6/netfilter.c16
-rw-r--r--net/ipv6/netfilter/ip6t_REJECT.c2
-rw-r--r--net/ipv6/raw.c2
-rw-r--r--net/ipv6/reassembly.c22
-rw-r--r--net/ipv6/route.c12
-rw-r--r--net/ipv6/sit.c21
-rw-r--r--net/ipv6/tcp_ipv6.c8
-rw-r--r--net/ipv6/udp.c7
-rw-r--r--net/ipv6/xfrm6_mode_tunnel.c4
-rw-r--r--net/ipv6/xfrm6_output.c4
-rw-r--r--net/netfilter/ipvs/ip_vs_xmit.c48
-rw-r--r--net/netfilter/nf_conntrack_proto_gre.c2
-rw-r--r--net/netfilter/xt_TCPMSS.c6
-rw-r--r--net/netfilter/xt_policy.c2
-rw-r--r--net/netfilter/xt_realm.c2
-rw-r--r--net/packet/af_packet.c6
-rw-r--r--net/sched/cls_flow.c8
-rw-r--r--net/sched/cls_route.c2
-rw-r--r--net/sched/em_meta.c4
-rw-r--r--net/sched/sch_sfq.c2
-rw-r--r--net/sched/sch_teql.c6
-rw-r--r--net/sctp/output.c6
-rw-r--r--net/sunrpc/xprtsock.c2
-rw-r--r--net/xfrm/xfrm_input.c3
-rw-r--r--net/xfrm/xfrm_output.c21
-rw-r--r--net/xfrm/xfrm_policy.c8
69 files changed, 354 insertions, 344 deletions
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index bfa8fa9894f..2912665fc58 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -228,7 +228,7 @@ static int br2684_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct br2684_dev *brdev = BRPRIV(dev);
struct br2684_vcc *brvcc;
- pr_debug("br2684_start_xmit, skb->dst=%p\n", skb->dst);
+ pr_debug("br2684_start_xmit, skb_dst(skb)=%p\n", skb_dst(skb));
read_lock(&devs_lock);
brvcc = pick_outgoing_vcc(skb, brdev);
if (brvcc == NULL) {
diff --git a/net/atm/clip.c b/net/atm/clip.c
index fb7623c080f..e65a3b1477f 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -369,16 +369,16 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned long flags;
pr_debug("clip_start_xmit (skb %p)\n", skb);
- if (!skb->dst) {
- printk(KERN_ERR "clip_start_xmit: skb->dst == NULL\n");
+ if (!skb_dst(skb)) {
+ printk(KERN_ERR "clip_start_xmit: skb_dst(skb) == NULL\n");
dev_kfree_skb(skb);
dev->stats.tx_dropped++;
return 0;
}
- if (!skb->dst->neighbour) {
+ if (!skb_dst(skb)->neighbour) {
#if 0
- skb->dst->neighbour = clip_find_neighbour(skb->dst, 1);
- if (!skb->dst->neighbour) {
+ skb_dst(skb)->neighbour = clip_find_neighbour(skb_dst(skb), 1);
+ if (!skb_dst(skb)->neighbour) {
dev_kfree_skb(skb); /* lost that one */
dev->stats.tx_dropped++;
return 0;
@@ -389,7 +389,7 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
dev->stats.tx_dropped++;
return 0;
}
- entry = NEIGH2ENTRY(skb->dst->neighbour);
+ entry = NEIGH2ENTRY(skb_dst(skb)->neighbour);
if (!entry->vccs) {
if (time_after(jiffies, entry->expires)) {
/* should be resolved */
@@ -406,7 +406,7 @@ static int clip_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
pr_debug("neigh %p, vccs %p\n", entry, entry->vccs);
ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
- pr_debug("using neighbour %p, vcc %p\n", skb->dst->neighbour, vcc);
+ pr_debug("using neighbour %p, vcc %p\n", skb_dst(skb)->neighbour, vcc);
if (entry->vccs->encap) {
void *here;
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index e0ceb66a9ec..d22f611e400 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -242,7 +242,7 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
return 0;
}
dst_hold(&rt->u.dst);
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
skb->dev = nf_bridge->physindev;
nf_bridge_push_encap_header(skb);
@@ -322,7 +322,7 @@ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
skb->dev = bridge_parent(skb->dev);
if (skb->dev) {
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
nf_bridge_pull_encap_header(skb);
@@ -375,7 +375,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
/* - Bridged-and-DNAT'ed traffic doesn't
* require ip_forwarding. */
if (((struct dst_entry *)rt)->dev == dev) {
- skb->dst = (struct dst_entry *)rt;
+ skb_dst_set(skb, (struct dst_entry *)rt);
goto bridged_dnat;
}
/* we are sure that forwarding is disabled, so printing
@@ -389,7 +389,7 @@ free_skb:
kfree_skb(skb);
return 0;
} else {
- if (skb->dst->dev == dev) {
+ if (skb_dst(skb)->dev == dev) {
bridged_dnat:
/* Tell br_nf_local_out this is a
* bridged frame */
@@ -412,7 +412,7 @@ bridged_dnat:
return 0;
}
dst_hold(&rt->u.dst);
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
}
skb->dev = nf_bridge->physindev;
@@ -633,10 +633,8 @@ static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff *skb,
{
struct rtable *rt = skb_rtable(skb);
- if (rt && rt == bridge_parent_rtable(in)) {
- dst_release(&rt->u.dst);
- skb->dst = NULL;
- }
+ if (rt && rt == bridge_parent_rtable(in))
+ skb_dst_drop(skb);
return NF_ACCEPT;
}
@@ -851,7 +849,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,
return NF_ACCEPT;
#ifdef CONFIG_NETFILTER_DEBUG
- if (skb->dst == NULL) {
+ if (skb_dst(skb) == NULL) {
printk(KERN_INFO "br_netfilter post_routing: skb->dst == NULL\n");
goto print_error;
}
diff --git a/net/core/dev.c b/net/core/dev.c
index e2fcc5f1017..34b49a6a22f 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1693,10 +1693,9 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
* If device doesnt need skb->dst, release it right now while
* its hot in this cpu cache
*/
- if ((dev->priv_flags & IFF_XMIT_DST_RELEASE) && skb->dst) {
- dst_release(skb->dst);
- skb->dst = NULL;
- }
+ if (dev->priv_flags & IFF_XMIT_DST_RELEASE)
+ skb_dst_drop(skb);
+
rc = ops->ndo_start_xmit(skb, dev);
if (rc == 0)
txq_trans_update(txq);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index a1cbce7fdae..c54229befcf 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1088,8 +1088,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
struct neighbour *n1 = neigh;
write_unlock_bh(&neigh->lock);
/* On shaper/eql skb->dst->neighbour != neigh :( */
- if (skb->dst && skb->dst->neighbour)
- n1 = skb->dst->neighbour;
+ if (skb_dst(skb) && skb_dst(skb)->neighbour)
+ n1 = skb_dst(skb)->neighbour;
n1->output(skb);
write_lock_bh(&neigh->lock);
}
@@ -1182,7 +1182,7 @@ EXPORT_SYMBOL(neigh_compat_output);
int neigh_resolve_output(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct neighbour *neigh;
int rc = 0;
@@ -1229,7 +1229,7 @@ EXPORT_SYMBOL(neigh_resolve_output);
int neigh_connected_output(struct sk_buff *skb)
{
int err;
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct neighbour *neigh = dst->neighbour;
struct net_device *dev = neigh->dev;
@@ -1298,8 +1298,7 @@ void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
if (time_before(tbl->proxy_timer.expires, sched_next))
sched_next = tbl->proxy_timer.expires;
}
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
dev_hold(skb->dev);
__skb_queue_tail(&tbl->proxy_queue, skb);
mod_timer(&tbl->proxy_timer, sched_next);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 8e815e685f2..6adf19ec95c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -381,7 +381,7 @@ static void kfree_skbmem(struct sk_buff *skb)
static void skb_release_head_state(struct sk_buff *skb)
{
- dst_release(skb->dst);
+ skb_dst_drop(skb);
#ifdef CONFIG_XFRM
secpath_put(skb->sp);
#endif
@@ -521,7 +521,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
new->transport_header = old->transport_header;
new->network_header = old->network_header;
new->mac_header = old->mac_header;
- new->dst = dst_clone(old->dst);
+ skb_dst_set(new, dst_clone(skb_dst(old)));
#ifdef CONFIG_XFRM
new->sp = secpath_get(old->sp);
#endif
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 2cf48ba0dbb..a0a36c9e6cc 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -507,7 +507,7 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
const struct iphdr *rxiph;
struct sk_buff *skb;
struct dst_entry *dst;
- struct net *net = dev_net(rxskb->dst->dev);
+ struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v4_ctl_sk;
/* Never send a reset in response to a reset. */
@@ -528,7 +528,7 @@ static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
rxiph = ip_hdr(rxskb);
dccp_hdr(skb)->dccph_checksum = dccp_v4_csum_finish(skb, rxiph->saddr,
rxiph->daddr);
- skb->dst = dst_clone(dst);
+ skb_dst_set(skb, dst_clone(dst));
bh_lock_sock(ctl_sk);
err = ip_build_and_send_pkt(skb, ctl_sk,
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index b963f35c65f..05ea7440d9e 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -314,8 +314,9 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
struct ipv6hdr *rxip6h;
struct sk_buff *skb;
struct flowi fl;
- struct net *net = dev_net(rxskb->dst->dev);
+ struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v6_ctl_sk;
+ struct dst_entry *dst;
if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)
return;
@@ -342,8 +343,9 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
security_skb_classify_flow(rxskb, &fl);
/* sk = NULL, but it is safe for now. RST socket required. */
- if (!ip6_dst_lookup(ctl_sk, &skb->dst, &fl)) {
- if (xfrm_lookup(net, &skb->dst, &fl, NULL, 0) >= 0) {
+ if (!ip6_dst_lookup(ctl_sk, &dst, &fl)) {
+ if (xfrm_lookup(net, &dst, &fl, NULL, 0) >= 0) {
+ skb_dst_set(skb, dst);
ip6_xmit(ctl_sk, skb, &fl, NULL, 0);
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
diff --git a/net/dccp/output.c b/net/dccp/output.c
index 36bcc00654d..c0e88c16d08 100644
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -350,7 +350,7 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst,
/* Reserve space for headers. */
skb_reserve(skb, sk->sk_prot->max_header);
- skb->dst = dst_clone(dst);
+ skb_dst_set(skb, dst_clone(dst));
dreq = dccp_rsk(req);
if (inet_rsk(req)->acked) /* increase ISS upon retransmission */
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index bccb3887773..a5e3a593e47 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1075,6 +1075,7 @@ static int dn_accept(struct socket *sock, struct socket *newsock, int flags)
int err = 0;
unsigned char type;
long timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
+ struct dst_entry *dst;
lock_sock(sk);
@@ -1102,8 +1103,9 @@ static int dn_accept(struct socket *sock, struct socket *newsock, int flags)
}
release_sock(sk);
- dst_release(xchg(&newsk->sk_dst_cache, skb->dst));
- skb->dst = NULL;
+ dst = skb_dst(skb);
+ dst_release(xchg(&newsk->sk_dst_cache, dst));
+ skb_dst_set(skb, NULL);
DN_SK(newsk)->state = DN_CR;
DN_SK(newsk)->addrrem = cb->src_port;
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 05b5aa05e50..923786bd6d0 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -204,7 +204,7 @@ static void dn_short_error_report(struct neighbour *neigh, struct sk_buff *skb)
static int dn_neigh_output_packet(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct dn_route *rt = (struct dn_route *)dst;
struct neighbour *neigh = dst->neighbour;
struct net_device *dev = neigh->dev;
@@ -224,7 +224,7 @@ static int dn_neigh_output_packet(struct sk_buff *skb)
static int dn_long_output(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct neighbour *neigh = dst->neighbour;
struct net_device *dev = neigh->dev;
int headroom = dev->hard_header_len + sizeof(struct dn_long_packet) + 3;
@@ -270,7 +270,7 @@ static int dn_long_output(struct sk_buff *skb)
static int dn_short_output(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct neighbour *neigh = dst->neighbour;
struct net_device *dev = neigh->dev;
int headroom = dev->hard_header_len + sizeof(struct dn_short_packet) + 2;
@@ -313,7 +313,7 @@ static int dn_short_output(struct sk_buff *skb)
*/
static int dn_phase3_output(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct neighbour *neigh = dst->neighbour;
struct net_device *dev = neigh->dev;
int headroom = dev->hard_header_len + sizeof(struct dn_short_packet) + 2;
diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index da04f459337..a65e929ce76 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -85,7 +85,7 @@ static void dn_nsp_send(struct sk_buff *skb)
dst = sk_dst_check(sk, 0);
if (dst) {
try_again:
- skb->dst = dst;
+ skb_dst_set(skb, dst);
dst_output(skb);
return;
}
@@ -582,7 +582,7 @@ static __inline__ void dn_nsp_do_disc(struct sock *sk, unsigned char msgflg,
* to be able to send disc packets out which have no socket
* associations.
*/
- skb->dst = dst_clone(dst);
+ skb_dst_set(skb, dst_clone(dst));
dst_output(skb);
}
@@ -611,7 +611,7 @@ void dn_nsp_return_disc(struct sk_buff *skb, unsigned char msgflg,
int ddl = 0;
gfp_t gfp = GFP_ATOMIC;
- dn_nsp_do_disc(NULL, msgflg, reason, gfp, skb->dst, ddl,
+ dn_nsp_do_disc(NULL, msgflg, reason, gfp, skb_dst(skb), ddl,
NULL, cb->src_port, cb->dst_port);
}
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 0cc4394117d..1d6ca8a98dc 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -678,7 +678,7 @@ out:
static int dn_output(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct dn_route *rt = (struct dn_route *)dst;
struct net_device *dev = dst->dev;
struct dn_skb_cb *cb = DN_SKB_CB(skb);
@@ -717,7 +717,7 @@ error:
static int dn_forward(struct sk_buff *skb)
{
struct dn_skb_cb *cb = DN_SKB_CB(skb);
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct dn_dev *dn_db = dst->dev->dn_ptr;
struct dn_route *rt;
struct neighbour *neigh = dst->neighbour;
@@ -730,7 +730,7 @@ static int dn_forward(struct sk_buff *skb)
goto drop;
/* Ensure that we have enough space for headers */
- rt = (struct dn_route *)skb->dst;
+ rt = (struct dn_route *)skb_dst(skb);
header_len = dn_db->use_long ? 21 : 6;
if (skb_cow(skb, LL_RESERVED_SPACE(rt->u.dst.dev)+header_len))
goto drop;
@@ -1392,7 +1392,8 @@ make_route:
goto e_neighbour;
hash = dn_hash(rt->fl.fld_src, rt->fl.fld_dst);
- dn_insert_route(rt, hash, (struct dn_route **)&skb->dst);
+ dn_insert_route(rt, hash, &rt);
+ skb_dst_set(skb, &rt->u.dst);
done:
if (neigh)
@@ -1424,7 +1425,7 @@ static int dn_route_input(struct sk_buff *skb)
struct dn_skb_cb *cb = DN_SKB_CB(skb);
unsigned hash = dn_hash(cb->src, cb->dst);
- if (skb->dst)
+ if (skb_dst(skb))
return 0;
rcu_read_lock();
@@ -1437,7 +1438,7 @@ static int dn_route_input(struct sk_buff *skb)
(rt->fl.iif == cb->iif)) {
dst_use(&rt->u.dst, jiffies);
rcu_read_unlock();
- skb->dst = (struct dst_entry *)rt;
+ skb_dst_set(skb, (struct dst_entry *)rt);
return 0;
}
}
@@ -1449,7 +1450,7 @@ static int dn_route_input(struct sk_buff *skb)
static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq,
int event, int nowait, unsigned int flags)
{
- struct dn_route *rt = (struct dn_route *)skb->dst;
+ struct dn_route *rt = (struct dn_route *)skb_dst(skb);
struct rtmsg *r;
struct nlmsghdr *nlh;
unsigned char *b = skb_tail_pointer(skb);
@@ -1554,7 +1555,7 @@ static int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void
err = dn_route_input(skb);
local_bh_enable();
memset(cb, 0, sizeof(struct dn_skb_cb));
- rt = (struct dn_route *)skb->dst;
+ rt = (struct dn_route *)skb_dst(skb);
if (!err && -rt->u.dst.error)
err = rt->u.dst.error;
} else {
@@ -1570,7 +1571,7 @@ static int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void
skb->dev = NULL;
if (err)
goto out_free;
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
if (rtm->rtm_flags & RTM_F_NOTIFY)
rt->rt_flags |= RTCF_NOTIFY;
@@ -1622,15 +1623,15 @@ int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb)
rt = rcu_dereference(rt->u.dst.dn_next), idx++) {
if (idx < s_idx)
continue;
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
if (dn_rt_fill_info(skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, RTM_NEWROUTE,
1, NLM_F_MULTI) <= 0) {
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
rcu_read_unlock_bh();
goto done;
}
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
}
rcu_read_unlock_bh();
}
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 816494f271a..8a3881e28ac 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -468,7 +468,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
__be32 paddr;
struct neighbour *n;
- if (!skb->dst) {
+ if (!skb_dst(skb)) {
printk(KERN_DEBUG "arp_find is called with dst==NULL\n");
kfree_skb(skb);
return 1;
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 94f75efae93..97c410e8438 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -591,13 +591,13 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
goto relookup_failed;
/* Ugh! */
- odst = skb_in->dst;
+ odst = skb_dst(skb_in);
err = ip_route_input(skb_in, fl.fl4_dst, fl.fl4_src,
RT_TOS(tos), rt2->u.dst.dev);
dst_release(&rt2->u.dst);
rt2 = skb_rtable(skb_in);
- skb_in->dst = odst;
+ skb_dst_set(skb_in, odst);
}
if (err)
@@ -659,7 +659,7 @@ static void icmp_unreach(struct sk_buff *skb)
u32 info = 0;
struct net *net;
- net = dev_net(skb->dst->dev);
+ net = dev_net(skb_dst(skb)->dev);
/*
* Incomplete header ?
@@ -822,7 +822,7 @@ static void icmp_echo(struct sk_buff *skb)
{
struct net *net;
- net = dev_net(skb->dst->dev);
+ net = dev_net(skb_dst(skb)->dev);
if (!net->ipv4.sysctl_icmp_echo_ignore_all) {
struct icmp_bxm icmp_param;
@@ -873,7 +873,7 @@ static void icmp_timestamp(struct sk_buff *skb)
out:
return;
out_err:
- ICMP_INC_STATS_BH(dev_net(skb->dst->dev), ICMP_MIB_INERRORS);
+ ICMP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), ICMP_MIB_INERRORS);
goto out;
}
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index afabd2758b6..01b4284ed69 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -311,7 +311,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
return NULL;
}
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
skb->dev = dev;
skb_reserve(skb, LL_RESERVED_SPACE(dev));
@@ -659,7 +659,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
return -1;
}
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
skb_reserve(skb, LL_RESERVED_SPACE(dev));
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index 0761cd9bbd1..a2991bc8e32 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -42,7 +42,7 @@ static int ip_forward_finish(struct sk_buff *skb)
{
struct ip_options * opt = &(IPCB(skb)->opt);
- IP_INC_STATS_BH(dev_net(skb->dst->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
+ IP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
if (unlikely(opt->optlen))
ip_forward_options(skb);
@@ -123,7 +123,7 @@ sr_failed:
too_many_hops:
/* Tell the sender its packet died... */
- IP_INC_STATS_BH(dev_net(skb->dst->dev), IPSTATS_MIB_INHDRERRORS);
+ IP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_INHDRERRORS);
icmp_send(skb, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL, 0);
drop:
kfree_skb(skb);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 7985346653b..1f1b82475ea 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -573,7 +573,7 @@ int ip_defrag(struct sk_buff *skb, u32 user)
struct ipq *qp;
struct net *net;
- net = skb->dev ? dev_net(skb->dev) : dev_net(skb->dst->dev);
+ net = skb->dev ? dev_net(skb->dev) : dev_net(skb_dst(skb)->dev);
IP_INC_STATS_BH(net, IPSTATS_MIB_REASMREQDS);
/* Start by cleaning up the memory. */
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 85ddad45a91..44e2a3d2359 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -643,8 +643,7 @@ static int ipgre_rcv(struct sk_buff *skb)
stats->rx_packets++;
stats->rx_bytes += len;
skb->dev = tunnel->dev;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
nf_reset(skb);
skb_reset_network_header(skb);
@@ -698,7 +697,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if ((dst = tiph->daddr) == 0) {
/* NBMA tunnel */
- if (skb->dst == NULL) {
+ if (skb_dst(skb) == NULL) {
stats->tx_fifo_errors++;
goto tx_error;
}
@@ -712,7 +711,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
else if (skb->protocol == htons(ETH_P_IPV6)) {
struct in6_addr *addr6;
int addr_type;
- struct neighbour *neigh = skb->dst->neighbour;
+ struct neighbour *neigh = skb_dst(skb)->neighbour;
if (neigh == NULL)
goto tx_error;
@@ -766,10 +765,10 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (df)
mtu = dst_mtu(&rt->u.dst) - dev->hard_header_len - tunnel->hlen;
else
- mtu = skb->dst ? dst_mtu(skb->dst) : dev->mtu;
+ mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
- if (skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
if (skb->protocol == htons(ETH_P_IP)) {
df |= (old_iph->frag_off&htons(IP_DF));
@@ -783,14 +782,14 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
}
#ifdef CONFIG_IPV6
else if (skb->protocol == htons(ETH_P_IPV6)) {
- struct rt6_info *rt6 = (struct rt6_info *)skb->dst;
+ struct rt6_info *rt6 = (struct rt6_info *)skb_dst(skb);
- if (rt6 && mtu < dst_mtu(skb->dst) && mtu >= IPV6_MIN_MTU) {
+ if (rt6 && mtu < dst_mtu(skb_dst(skb)) && mtu >= IPV6_MIN_MTU) {
if ((tunnel->parms.iph.daddr &&
!ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
rt6->rt6i_dst.plen == 128) {
rt6->rt6i_flags |= RTF_MODIFIED;
- skb->dst->metrics[RTAX_MTU-1] = mtu;
+ skb_dst(skb)->metrics[RTAX_MTU-1] = mtu;
}
}
@@ -837,8 +836,8 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
IPSKB_REROUTED);
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/*
* Push down and install the IPIP header.
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index cea784b0aa4..490ce20faf3 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -329,7 +329,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
* Initialise the virtual path cache for the packet. It describes
* how the packet travels inside Linux networking.
*/
- if (skb->dst == NULL) {
+ if (skb_dst(skb) == NULL) {
int err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
skb->dev);
if (unlikely(err)) {
@@ -344,9 +344,9 @@ static int ip_rcv_finish(struct sk_buff *skb)
}
#ifdef CONFIG_NET_CLS_ROUTE
- if (unlikely(skb->dst->tclassid)) {
+ if (unlikely(skb_dst(skb)->tclassid)) {
struct ip_rt_acct *st = per_cpu_ptr(ip_rt_acct, smp_processor_id());
- u32 idx = skb->dst->tclassid;
+ u32 idx = skb_dst(skb)->tclassid;
st[idx&0xFF].o_packets++;
st[idx&0xFF].o_bytes += skb->len;
st[(idx>>16)&0xFF].i_packets++;
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 7e1074ffdbd..94bf105ef3c 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -143,7 +143,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
__be32 addr;
memcpy(&addr, sptr+soffset-1, 4);
- if (inet_addr_type(dev_net(skb->dst->dev), addr) != RTN_LOCAL) {
+ if (inet_addr_type(dev_net(skb_dst(skb)->dev), addr) != RTN_LOCAL) {
dopt->ts_needtime = 1;
soffset += 8;
}
@@ -624,12 +624,12 @@ int ip_options_rcv_srr(struct sk_buff *skb)
memcpy(&nexthop, &optptr[srrptr-1], 4);
rt = skb_rtable(skb);
- skb->dst = NULL;
+ skb_dst_set(skb, NULL);
err = ip_route_input(skb, nexthop, iph->saddr, iph->tos, skb->dev);
rt2 = skb_rtable(skb);
if (err || (rt2->rt_type != RTN_UNICAST && rt2->rt_type != RTN_LOCAL)) {
ip_rt_put(rt2);
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
return -EINVAL;
}
ip_rt_put(rt);
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 8d845ebfcca..3d6167fb2d9 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -95,7 +95,7 @@ int __ip_local_out(struct sk_buff *skb)
iph->tot_len = htons(skb->len);
ip_send_check(iph);
- return nf_hook(PF_INET, NF_INET_LOCAL_OUT, skb, NULL, skb->dst->dev,
+ return nf_hook(PF_INET, NF_INET_LOCAL_OUT, skb, NULL, skb_dst(skb)->dev,
dst_output);
}
@@ -118,7 +118,7 @@ static int ip_dev_loopback_xmit(struct sk_buff *newskb)
__skb_pull(newskb, skb_network_offset(newskb));
newskb->pkt_type = PACKET_LOOPBACK;
newskb->ip_summed = CHECKSUM_UNNECESSARY;
- WARN_ON(!newskb->dst);
+ WARN_ON(!skb_dst(newskb));
netif_rx(newskb);
return 0;
}
@@ -176,7 +176,7 @@ EXPORT_SYMBOL_GPL(ip_build_and_send_pkt);
static inline int ip_finish_output2(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct rtable *rt = (struct rtable *)dst;
struct net_device *dev = dst->dev;
unsigned int hh_len = LL_RESERVED_SPACE(dev);
@@ -217,14 +217,14 @@ static inline int ip_skb_dst_mtu(struct sk_buff *skb)
struct inet_sock *inet = skb->sk ? inet_sk(skb->sk) : NULL;
return (inet && inet->pmtudisc == IP_PMTUDISC_PROBE) ?
- skb->dst->dev->mtu : dst_mtu(skb->dst);
+ skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));
}
static int ip_finish_output(struct sk_buff *skb)
{
#if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM)
/* Policy lookup after SNAT yielded a new policy */
- if (skb->dst->xfrm != NULL) {
+ if (skb_dst(skb)->xfrm != NULL) {
IPCB(skb)->flags |= IPSKB_REROUTED;
return dst_output(skb);
}
@@ -296,7 +296,7 @@ int ip_mc_output(struct sk_buff *skb)
int ip_output(struct sk_buff *skb)
{
- struct net_device *dev = skb->dst->dev;
+ struct net_device *dev = skb_dst(skb)->dev;
IP_UPD_PO_STATS(dev_net(dev), IPSTATS_MIB_OUT, skb->len);
@@ -355,7 +355,7 @@ int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
}
sk_setup_caps(sk, &rt->u.dst);
}
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
packet_routed:
if (opt && opt->is_strictroute && rt->rt_dst != rt->rt_gateway)
@@ -401,8 +401,8 @@ static void ip_copy_metadata(struct sk_buff *to, struct sk_buff *from)
to->pkt_type = from->pkt_type;
to->priority = from->priority;
to->protocol = from->protocol;
- dst_release(to->dst);
- to->dst = dst_clone(from->dst);
+ skb_dst_drop(to);
+ skb_dst_set(to, dst_clone(skb_dst(from)));
to->dev = from->dev;
to->mark = from->mark;
@@ -1294,7 +1294,7 @@ int ip_push_pending_frames(struct sock *sk)
* on dst refcount
*/
inet->cork.dst = NULL;
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
if (iph->protocol == IPPROTO_ICMP)
icmp_out_count(net, ((struct icmphdr *)
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 0c6e7bf18a4..93e2b787da2 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -370,8 +370,7 @@ static int ipip_rcv(struct sk_buff *skb)
tunnel->dev->stats.rx_packets++;
tunnel->dev->stats.rx_bytes += skb->len;
skb->dev = tunnel->dev;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
nf_reset(skb);
ipip_ecn_decapsulate(iph, skb);
netif_rx(skb);
@@ -447,15 +446,15 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (tiph->frag_off)
mtu = dst_mtu(&rt->u.dst) - sizeof(struct iphdr);
else
- mtu = skb->dst ? dst_mtu(skb->dst) : dev->mtu;
+ mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
if (mtu < 68) {
stats->collisions++;
ip_rt_put(rt);
goto tx_error;
}
- if (skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
df |= (old_iph->frag_off&htons(IP_DF));
@@ -502,8 +501,8 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
IPSKB_REROUTED);
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/*
* Push down and install the IPIP header.
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 69dd058283e..ffd98610446 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -651,7 +651,7 @@ static int ipmr_cache_report(struct net *net,
ip_hdr(skb)->protocol = 0; /* Flag to the kernel this is a route add */
msg = (struct igmpmsg *)skb_network_header(skb);
msg->im_vif = vifi;
- skb->dst = dst_clone(pkt->dst);
+ skb_dst_set(skb, dst_clone(skb_dst(pkt)));
/*
* Add our header
@@ -1201,7 +1201,7 @@ static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
iph->protocol = IPPROTO_IPIP;
iph->ihl = 5;
iph->tot_len = htons(skb->len);
- ip_select_ident(iph, skb->dst, NULL);
+ ip_select_ident(iph, skb_dst(skb), NULL);
ip_send_check(iph);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
@@ -1212,7 +1212,7 @@ static inline int ipmr_forward_finish(struct sk_buff *skb)
{
struct ip_options * opt = &(IPCB(skb)->opt);
- IP_INC_STATS_BH(dev_net(skb->dst->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
+ IP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
if (unlikely(opt->optlen))
ip_forward_options(skb);
@@ -1290,8 +1290,8 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
vif->pkt_out++;
vif->bytes_out += skb->len;
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
ip_decrease_ttl(ip_hdr(skb));
/* FIXME: forward and output firewalls used to be called here.
@@ -1543,8 +1543,7 @@ static int __pim_rcv(struct sk_buff *skb, unsigned int pimlen)
skb->protocol = htons(ETH_P_IP);
skb->ip_summed = 0;
skb->pkt_type = PACKET_HOST;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
reg_dev->stats.rx_bytes += skb->len;
reg_dev->stats.rx_packets++;
nf_reset(skb);
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index fdf6811c31a..1725dc0ef68 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -12,7 +12,7 @@
/* route_me_harder function, used by iptable_nat, iptable_mangle + ip_queue */
int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
{
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
const struct iphdr *iph = ip_hdr(skb);
struct rtable *rt;
struct flowi fl = {};
@@ -41,8 +41,8 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
return -1;
/* Drop old route. */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
} else {
/* non-local src, find valid iif to satisfy
* rp-filter when calling ip_route_input. */
@@ -50,7 +50,7 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
if (ip_route_output_key(net, &rt, &fl) != 0)
return -1;
- odst = skb->dst;
+ odst = skb_dst(skb);
if (ip_route_input(skb, iph->daddr, iph->saddr,
RT_TOS(iph->tos), rt->u.dst.dev) != 0) {
dst_release(&rt->u.dst);
@@ -60,18 +60,22 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
dst_release(odst);
}
- if (skb->dst->error)
+ if (skb_dst(skb)->error)
return -1;
#ifdef CONFIG_XFRM
if (!(IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED) &&
- xfrm_decode_session(skb, &fl, AF_INET) == 0)
- if (xfrm_lookup(net, &skb->dst, &fl, skb->sk, 0))
+ xfrm_decode_session(skb, &fl, AF_INET) == 0) {
+ struct dst_entry *dst = skb_dst(skb);
+ skb_dst_set(skb, NULL);
+ if (xfrm_lookup(net, &dst, &fl, skb->sk, 0))
return -1;
+ skb_dst_set(skb, dst);
+ }
#endif
/* Change in oif may mean change in hh_len. */
- hh_len = skb->dst->dev->hard_header_len;
+ hh_len = skb_dst(skb)->dev->hard_header_len;
if (skb_headroom(skb) < hh_len &&
pskb_expand_head(skb, hh_len - skb_headroom(skb), 0, GFP_ATOMIC))
return -1;
@@ -92,7 +96,7 @@ int ip_xfrm_me_harder(struct sk_buff *skb)
if (xfrm_decode_session(skb, &fl, AF_INET) < 0)
return -1;
- dst = skb->dst;
+ dst = skb_dst(skb);
if (dst->xfrm)
dst = ((struct xfrm_dst *)dst)->route;
dst_hold(dst);
@@ -100,11 +104,11 @@ int ip_xfrm_me_harder(struct sk_buff *skb)
if (xfrm_lookup(dev_net(dst->dev), &dst, &fl, skb->sk, 0) < 0)
return -1;
- dst_release(skb->dst);
- skb->dst = dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, dst);
/* Change in oif may mean change in hh_len. */
- hh_len = skb->dst->dev->hard_header_len;
+ hh_len = skb_dst(skb)->dev->hard_header_len;
if (skb_headroom(skb) < hh_len &&
pskb_expand_head(skb, hh_len - skb_headroom(skb), 0, GFP_ATOMIC))
return -1;
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 0b4b6e0ff2b..c93ae44bff2 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -108,17 +108,16 @@ static void send_reset(struct sk_buff *oldskb, int hook)
addr_type = RTN_LOCAL;
/* ip_route_me_harder expects skb->dst to be set */
- dst_hold(oldskb->dst);
- nskb->dst = oldskb->dst;
+ skb_dst_set(nskb, dst_clone(skb_dst(oldskb)));
if (ip_route_me_harder(nskb, addr_type))
goto free_nskb;
- niph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
+ niph->ttl = dst_metric(skb_dst(nskb), RTAX_HOPLIMIT);
nskb->ip_summed = CHECKSUM_NONE;
/* "Never happens" */
- if (nskb->len > dst_mtu(nskb->dst))
+ if (nskb->len > dst_mtu(skb_dst(nskb)))
goto free_nskb;
nf_ct_attach(nskb, oldskb);
diff --git a/net/ipv4/netfilter/nf_nat_standalone.c b/net/ipv4/netfilter/nf_nat_standalone.c
index b7dd695691a..5567bd0d075 100644
--- a/net/ipv4/netfilter/nf_nat_standalone.c
+++ b/net/ipv4/netfilter/nf_nat_standalone.c
@@ -167,10 +167,9 @@ nf_nat_in(unsigned int hooknum,
ret = nf_nat_fn(hooknum, skb, in, out, okfn);
if (ret != NF_DROP && ret != NF_STOLEN &&
- daddr != ip_hdr(skb)->daddr) {
- dst_release(skb->dst);
- skb->dst = NULL;
- }
+ daddr != ip_hdr(skb)->daddr)
+ skb_dst_drop(skb);
+
return ret;
}
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index f774651f0a4..3dc9171a272 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -343,7 +343,7 @@ static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
skb_reset_network_header(skb);
iph = ip_hdr(skb);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f20060ac2f0..a849bb15d86 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1118,7 +1118,7 @@ restart:
if (rp)
*rp = rth;
else
- skb->dst = &rth->u.dst;
+ skb_dst_set(skb, &rth->u.dst);
return 0;
}
@@ -1217,7 +1217,7 @@ restart:
if (rp)
*rp = rt;
else
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
return 0;
}
@@ -2251,7 +2251,7 @@ int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr,
dst_use(&rth->u.dst, jiffies);
RT_CACHE_STAT_INC(in_hit);
rcu_read_unlock();
- skb->dst = &rth->u.dst;
+ skb_dst_set(skb, &rth->u.dst);
return 0;
}
RT_CACHE_STAT_INC(in_hlist_search);
@@ -2934,7 +2934,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
if (err)
goto errout_free;
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
if (rtm->rtm_flags & RTM_F_NOTIFY)
rt->rt_flags |= RTCF_NOTIFY;
@@ -2975,15 +2975,15 @@ int ip_rt_dump(struct sk_buff *skb, struct netlink_callback *cb)
continue;
if (rt_is_expired(rt))
continue;
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
if (rt_fill_info(net, skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, RTM_NEWROUTE,
1, NLM_F_MULTI) <= 0) {
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
rcu_read_unlock_bh();
goto done;
}
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
}
rcu_read_unlock_bh();
}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 319c8852644..5a1ca2698c8 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -590,7 +590,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
arg.flags = (sk && inet_sk(sk)->transparent) ? IP_REPLY_ARG_NOSRCCHECK : 0;
- net = dev_net(skb->dst->dev);
+ net = dev_net(skb_dst(skb)->dev);
ip_send_reply(net->ipv4.tcp_sock, skb,
&arg, arg.iov[0].iov_len);
@@ -617,7 +617,7 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
];
} rep;
struct ip_reply_arg arg;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
memset(&rep.th, 0, sizeof(struct tcphdr));
memset(&arg, 0, sizeof(arg));
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 79c39dc9b01..416fc4c2e7e 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2202,7 +2202,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
/* Reserve space for headers. */
skb_reserve(skb, MAX_TCP_HEADER);
- skb->dst = dst_clone(dst);
+ skb_dst_set(skb, dst_clone(dst));
mss = dst_metric(dst, RTAX_ADVMSS);
if (tp->rx_opt.user_mss && tp->rx_opt.user_mss < mss)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 7a1d1ce22e6..8f4158d7c9a 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -328,7 +328,7 @@ static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb,
if (unlikely(sk = skb_steal_sock(skb)))
return sk;
else
- return __udp4_lib_lookup(dev_net(skb->dst->dev), iph->saddr, sport,
+ return __udp4_lib_lookup(dev_net(skb_dst(skb)->dev), iph->saddr, sport,
iph->daddr, dport, inet_iif(skb),
udptable);
}
@@ -1237,7 +1237,7 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
struct sock *sk;
struct udphdr *uh;
unsigned short ulen;
- struct rtable *rt = (struct rtable*)skb->dst;
+ struct rtable *rt = skb_rtable(skb);
__be32 saddr, daddr;
struct net *net = dev_net(skb->dev);
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index 4ec2162a437..f9f922a0ba8 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -23,7 +23,7 @@ int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb)
static inline int xfrm4_rcv_encap_finish(struct sk_buff *skb)
{
- if (skb->dst == NULL) {
+ if (skb_dst(skb) == NULL) {
const struct iphdr *iph = ip_hdr(skb);
if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 7135279f3f8..3444f3b34ec 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -28,7 +28,7 @@ static inline void ipip_ecn_decapsulate(struct sk_buff *skb)
*/
static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct iphdr *top_iph;
int flags;
@@ -41,7 +41,7 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
top_iph->ihl = 5;
top_iph->version = 4;
- top_iph->protocol = xfrm_af2proto(skb->dst->ops->family);
+ top_iph->protocol = xfrm_af2proto(skb_dst(skb)->ops->family);
/* DS disclosed */
top_iph->tos = INET_ECN_encapsulate(XFRM_MODE_SKB_CB(skb)->tos,
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 8c3180adddb..c908bd99bcb 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -29,7 +29,7 @@ static int xfrm4_tunnel_check_size(struct sk_buff *skb)
if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df)
goto out;
- dst = skb->dst;
+ dst = skb_dst(skb);
mtu = dst_mtu(dst);
if (skb->len > mtu) {
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
@@ -72,7 +72,7 @@ EXPORT_SYMBOL(xfrm4_prepare_output);
static int xfrm4_output_finish(struct sk_buff *skb)
{
#ifdef CONFIG_NETFILTER
- if (!skb->dst->xfrm) {
+ if (!skb_dst(skb)->xfrm) {
IPCB(skb)->flags |= IPSKB_REROUTED;
return dst_output(skb);
}
@@ -87,6 +87,6 @@ static int xfrm4_output_finish(struct sk_buff *skb)
int xfrm4_output(struct sk_buff *skb)
{
return NF_HOOK_COND(PF_INET, NF_INET_POST_ROUTING, skb,
- NULL, skb->dst->dev, xfrm4_output_finish,
+ NULL, skb_dst(skb)->dev, xfrm4_output_finish,
!(IPCB(skb)->flags & IPSKB_REROUTED));
}
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 1c7f400a3cf..4aae658e550 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -277,7 +277,7 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
!pskb_may_pull(skb, (skb_transport_offset(skb) +
((skb_transport_header(skb)[1] + 1) << 3)))) {
- IP6_INC_STATS_BH(dev_net(skb->dst->dev), ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(dev_net(skb_dst(skb)->dev), ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
@@ -288,7 +288,7 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
dstbuf = opt->dst1;
#endif
- dst = dst_clone(skb->dst);
+ dst = dst_clone(skb_dst(skb));
if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
dst_release(dst);
skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
@@ -333,7 +333,7 @@ static int ipv6_rthdr_rcv(struct sk_buff *skb)
if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
!pskb_may_pull(skb, (skb_transport_offset(skb) +
((skb_transport_header(skb)[1] + 1) << 3)))) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
@@ -343,7 +343,7 @@ static int ipv6_rthdr_rcv(struct sk_buff *skb)
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ||
skb->pkt_type != PACKET_HOST) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -358,7 +358,7 @@ looped_back:
* processed by own
*/
if (!addr) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -384,7 +384,7 @@ looped_back:
goto unknown_rh;
/* Silently discard invalid RTH type 2 */
if (hdr->hdrlen != 2 || hdr->segments_left != 1) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
@@ -403,7 +403,7 @@ looped_back:
n = hdr->hdrlen >> 1;
if (hdr->segments_left > n) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
((&hdr->segments_left) -
@@ -417,7 +417,7 @@ looped_back:
if (skb_cloned(skb)) {
/* the copy is a forwarded packet */
if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
return -1;
@@ -440,13 +440,13 @@ looped_back:
if (xfrm6_input_addr(skb, (xfrm_address_t *)addr,
(xfrm_address_t *)&ipv6_hdr(skb)->saddr,
IPPROTO_ROUTING) < 0) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
}
- if (!ipv6_chk_home_addr(dev_net(skb->dst->dev), addr)) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ if (!ipv6_chk_home_addr(dev_net(skb_dst(skb)->dev), addr)) {
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -458,7 +458,7 @@ looped_back:
}
if (ipv6_addr_is_multicast(addr)) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
@@ -468,17 +468,17 @@ looped_back:
ipv6_addr_copy(addr, &ipv6_hdr(skb)->daddr);
ipv6_addr_copy(&ipv6_hdr(skb)->daddr, &daddr);
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
ip6_route_input(skb);
- if (skb->dst->error) {
+ if (skb_dst(skb)->error) {
skb_push(skb, skb->data - skb_network_header(skb));
dst_input(skb);
return -1;
}
- if (skb->dst->dev->flags&IFF_LOOPBACK) {
+ if (skb_dst(skb)->dev->flags&IFF_LOOPBACK) {
if (ipv6_hdr(skb)->hop_limit <= 1) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
0, skb->dev);
@@ -494,7 +494,7 @@ looped_back:
return -1;
unknown_rh:
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
(&hdr->type) - skb_network_header(skb));
return -1;
@@ -552,11 +552,11 @@ void ipv6_exthdrs_exit(void)
**********************************/
/*
- * Note: we cannot rely on skb->dst before we assign it in ip6_route_input().
+ * Note: we cannot rely on skb_dst(skb) before we assign it in ip6_route_input().
*/
static inline struct inet6_dev *ipv6_skb_idev(struct sk_buff *skb)
{
- return skb->dst ? ip6_dst_idev(skb->dst) : __in6_dev_get(skb->dev);
+ return skb_dst(skb) ? ip6_dst_idev(skb_dst(skb)) : __in6_dev_get(skb->dev);
}
/* Router Alert as of RFC 2711 */
@@ -581,7 +581,7 @@ static int ipv6_hop_jumbo(struct sk_buff *skb, int optoff)
{
const unsigned char *nh = skb_network_header(skb);
u32 pkt_len;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
if (nh[optoff + 1] != 4 || (optoff & 3) != 2) {
LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_jumbo: wrong jumbo opt length/alignment %d\n",
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 3c3732d50c1..cc4797dd832 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -228,7 +228,7 @@ int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
__inet6_csk_dst_store(sk, dst, NULL, NULL);
}
- skb->dst = dst_clone(dst);
+ skb_dst_set(skb, dst_clone(dst));
/* Restore final destination back after routing done */
ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index bc1a920c34a..c3a07d75b5f 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -48,7 +48,7 @@
inline int ip6_rcv_finish( struct sk_buff *skb)
{
- if (skb->dst == NULL)
+ if (skb_dst(skb) == NULL)
ip6_route_input(skb);
return dst_input(skb);
@@ -91,7 +91,7 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
* arrived via the sending interface (ethX), because of the
* nature of scoping architecture. --yoshfuji
*/
- IP6CB(skb)->iif = skb->dst ? ip6_dst_idev(skb->dst)->dev->ifindex : dev->ifindex;
+ IP6CB(skb)->iif = skb_dst(skb) ? ip6_dst_idev(skb_dst(skb))->dev->ifindex : dev->ifindex;
if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))
goto err;
@@ -161,7 +161,7 @@ static int ip6_input_finish(struct sk_buff *skb)
int nexthdr, raw;
u8 hash;
struct inet6_dev *idev;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
/*
* Parse extension headers
@@ -169,7 +169,7 @@ static int ip6_input_finish(struct sk_buff *skb)
rcu_read_lock();
resubmit:
- idev = ip6_dst_idev(skb->dst);
+ idev = ip6_dst_idev(skb_dst(skb));
if (!pskb_pull(skb, skb_transport_offset(skb)))
goto discard;
nhoff = IP6CB(skb)->nhoff;
@@ -242,8 +242,8 @@ int ip6_mc_input(struct sk_buff *skb)
struct ipv6hdr *hdr;
int deliver;
- IP6_UPD_PO_STATS_BH(dev_net(skb->dst->dev),
- ip6_dst_idev(skb->dst), IPSTATS_MIB_INMCAST,
+ IP6_UPD_PO_STATS_BH(dev_net(skb_dst(skb)->dev),
+ ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INMCAST,
skb->len);
hdr = ipv6_hdr(skb);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 735a2bf4b5f..c8dc8e5a822 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -78,7 +78,7 @@ int __ip6_local_out(struct sk_buff *skb)
len = 0;
ipv6_hdr(skb)->payload_len = htons(len);
- return nf_hook(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb->dst->dev,
+ return nf_hook(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb_dst(skb)->dev,
dst_output);
}
@@ -96,7 +96,7 @@ EXPORT_SYMBOL_GPL(ip6_local_out);
static int ip6_output_finish(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
if (dst->hh)
return neigh_hh_output(dst->hh, skb);
@@ -117,7 +117,7 @@ static int ip6_dev_loopback_xmit(struct sk_buff *newskb)
__skb_pull(newskb, skb_network_offset(newskb));
newskb->pkt_type = PACKET_LOOPBACK;
newskb->ip_summed = CHECKSUM_UNNECESSARY;
- WARN_ON(!newskb->dst);
+ WARN_ON(!skb_dst(newskb));
netif_rx(newskb);
return 0;
@@ -126,7 +126,7 @@ static int ip6_dev_loopback_xmit(struct sk_buff *newskb)
static int ip6_output2(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct net_device *dev = dst->dev;
skb->protocol = htons(ETH_P_IPV6);
@@ -134,7 +134,7 @@ static int ip6_output2(struct sk_buff *skb)
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr)) {
struct ipv6_pinfo* np = skb->sk ? inet6_sk(skb->sk) : NULL;
- struct inet6_dev *idev = ip6_dst_idev(skb->dst);
+ struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
if (!(dev->flags & IFF_LOOPBACK) && (!np || np->mc_loop) &&
((mroute6_socket(dev_net(dev)) &&
@@ -172,21 +172,21 @@ static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ?
- skb->dst->dev->mtu : dst_mtu(skb->dst);
+ skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));
}
int ip6_output(struct sk_buff *skb)
{
- struct inet6_dev *idev = ip6_dst_idev(skb->dst);
+ struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
if (unlikely(idev->cnf.disable_ipv6)) {
- IP6_INC_STATS(dev_net(skb->dst->dev), idev,
+ IP6_INC_STATS(dev_net(skb_dst(skb)->dev), idev,
IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
return 0;
}
if ((skb->len > ip6_skb_dst_mtu(skb) && !skb_is_gso(skb)) ||
- dst_allfrag(skb->dst))
+ dst_allfrag(skb_dst(skb)))
return ip6_fragment(skb, ip6_output2);
else
return ip6_output2(skb);
@@ -202,7 +202,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
struct net *net = sock_net(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *first_hop = &fl->fl6_dst;
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct ipv6hdr *hdr;
u8 proto = fl->proto;
int seg_len = skb->len;
@@ -222,7 +222,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
if (skb_headroom(skb) < head_room) {
struct sk_buff *skb2 = skb_realloc_headroom(skb, head_room);
if (skb2 == NULL) {
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
return -ENOBUFS;
@@ -276,7 +276,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
mtu = dst_mtu(dst);
if ((skb->len <= mtu) || skb->local_df || skb_is_gso(skb)) {
- IP6_UPD_PO_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_UPD_PO_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUT, skb->len);
return NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, dst->dev,
dst_output);
@@ -286,7 +286,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
printk(KERN_DEBUG "IPv6: sending pkt_too_big to self\n");
skb->dev = dst->dev;
icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu, skb->dev);
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst), IPSTATS_MIB_FRAGFAILS);
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_FRAGFAILS);
kfree_skb(skb);
return -EMSGSIZE;
}
@@ -416,7 +416,7 @@ static inline int ip6_forward_finish(struct sk_buff *skb)
int ip6_forward(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct inet6_skb_parm *opt = IP6CB(skb);
struct net *net = dev_net(dst->dev);
@@ -485,7 +485,7 @@ int ip6_forward(struct sk_buff *skb)
IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_INDISCARDS);
goto drop;
}
- dst = skb->dst;
+ dst = skb_dst(skb);
/* IPv6 specs say nothing about it, but it is clear that we cannot
send redirects to source routed frames.
@@ -566,8 +566,8 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
to->pkt_type = from->pkt_type;
to->priority = from->priority;
to->protocol = from->protocol;
- dst_release(to->dst);
- to->dst = dst_clone(from->dst);
+ skb_dst_drop(to);
+ skb_dst_set(to, dst_clone(skb_dst(from)));
to->dev = from->dev;
to->mark = from->mark;
@@ -624,7 +624,7 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
{
struct sk_buff *frag;
- struct rt6_info *rt = (struct rt6_info*)skb->dst;
+ struct rt6_info *rt = (struct rt6_info*)skb_dst(skb);
struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
struct ipv6hdr *tmp_hdr;
struct frag_hdr *fh;
@@ -632,7 +632,7 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
__be32 frag_id = 0;
int ptr, offset = 0, err=0;
u8 *prevhdr, nexthdr = 0;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
hlen = ip6_find_1stfragopt(skb, &prevhdr);
nexthdr = *prevhdr;
@@ -644,9 +644,9 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
* check should be redundant, but it's free.)
*/
if (!skb->local_df) {
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu, skb->dev);
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_FRAGFAILS);
kfree_skb(skb);
return -EMSGSIZE;
@@ -696,7 +696,7 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
*prevhdr = NEXTHDR_FRAGMENT;
tmp_hdr = kmemdup(skb_network_header(skb), hlen, GFP_ATOMIC);
if (!tmp_hdr) {
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_FRAGFAILS);
return -ENOMEM;
}
@@ -809,7 +809,7 @@ slow_path:
if ((frag = alloc_skb(len+hlen+sizeof(struct frag_hdr)+LL_ALLOCATED_SPACE(rt->u.dst.dev), GFP_ATOMIC)) == NULL) {
NETDEBUG(KERN_INFO "IPv6: frag: no memory for new fragment!\n");
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_FRAGFAILS);
err = -ENOMEM;
goto fail;
@@ -873,16 +873,16 @@ slow_path:
if (err)
goto fail;
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_FRAGCREATES);
}
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_FRAGOKS);
kfree_skb(skb);
return err;
fail:
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_FRAGFAILS);
kfree_skb(skb);
return err;
@@ -1516,10 +1516,10 @@ int ip6_push_pending_frames(struct sock *sk)
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
if (proto == IPPROTO_ICMPV6) {
- struct inet6_dev *idev = ip6_dst_idev(skb->dst);
+ struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
ICMP6MSGOUT_INC_STATS_BH(net, idev, icmp6_hdr(skb)->icmp6_type);
ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTMSGS);
@@ -1545,8 +1545,8 @@ void ip6_flush_pending_frames(struct sock *sk)
struct sk_buff *skb;
while ((skb = __skb_dequeue_tail(&sk->sk_write_queue)) != NULL) {
- if (skb->dst)
- IP6_INC_STATS(sock_net(sk), ip6_dst_idev(skb->dst),
+ if (skb_dst(skb))
+ IP6_INC_STATS(sock_net(sk), ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index af256d47fd3..404d16a97d5 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -532,8 +532,8 @@ ip4ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
if (!skb2)
return 0;
- dst_release(skb2->dst);
- skb2->dst = NULL;
+ skb_dst_drop(skb2);
+
skb_pull(skb2, offset);
skb_reset_network_header(skb2);
eiph = ip_hdr(skb2);
@@ -560,21 +560,21 @@ ip4ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
ip_rt_put(rt);
goto out;
}
- skb2->dst = (struct dst_entry *)rt;
+ skb_dst_set(skb2, (struct dst_entry *)rt);
} else {
ip_rt_put(rt);
if (ip_route_input(skb2, eiph->daddr, eiph->saddr, eiph->tos,
skb2->dev) ||
- skb2->dst->dev->type != ARPHRD_TUNNEL)
+ skb_dst(skb2)->dev->type != ARPHRD_TUNNEL)
goto out;
}
/* change mtu on this route */
if (rel_type == ICMP_DEST_UNREACH && rel_code == ICMP_FRAG_NEEDED) {
- if (rel_info > dst_mtu(skb2->dst))
+ if (rel_info > dst_mtu(skb_dst(skb2)))
goto out;
- skb2->dst->ops->update_pmtu(skb2->dst, rel_info);
+ skb_dst(skb2)->ops->update_pmtu(skb_dst(skb2), rel_info);
}
icmp_send(skb2, rel_type, rel_code, htonl(rel_info));
@@ -606,8 +606,7 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
if (!skb2)
return 0;
- dst_release(skb2->dst);
- skb2->dst = NULL;
+ skb_dst_drop(skb2);
skb_pull(skb2, offset);
skb_reset_network_header(skb2);
@@ -720,8 +719,7 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol,
skb->pkt_type = PACKET_HOST;
memset(skb->cb, 0, sizeof(struct inet6_skb_parm));
skb->dev = t->dev;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
nf_reset(skb);
dscp_ecn_decapsulate(t, ipv6h, skb);
@@ -885,8 +883,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
}
if (mtu < IPV6_MIN_MTU)
mtu = IPV6_MIN_MTU;
- if (skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
if (skb->len > mtu) {
*pmtu = mtu;
err = -EMSGSIZE;
@@ -910,8 +908,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
kfree_skb(skb);
skb = new_skb;
}
- dst_release(skb->dst);
- skb->dst = dst_clone(dst);
+ skb_dst_drop(skb);
+ skb_dst_set(skb, dst_clone(dst));
skb->transport_header = skb->network_header;
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 228be551e9c..a35d8fc55b0 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -398,10 +398,9 @@ static int pim6_rcv(struct sk_buff *skb)
skb->protocol = htons(ETH_P_IPV6);
skb->ip_summed = 0;
skb->pkt_type = PACKET_HOST;
- dst_release(skb->dst);
+ skb_dst_drop(skb);
reg_dev->stats.rx_bytes += skb->len;
reg_dev->stats.rx_packets++;
- skb->dst = NULL;
nf_reset(skb);
netif_rx(skb);
dev_put(reg_dev);
@@ -849,7 +848,7 @@ static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
ipv6_addr_copy(&msg->im6_src, &ipv6_hdr(pkt)->saddr);
ipv6_addr_copy(&msg->im6_dst, &ipv6_hdr(pkt)->daddr);
- skb->dst = dst_clone(pkt->dst);
+ skb_dst_set(skb, dst_clone(skb_dst(pkt)));
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
@@ -1487,7 +1486,7 @@ int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
static inline int ip6mr_forward2_finish(struct sk_buff *skb)
{
- IP6_INC_STATS_BH(dev_net(skb->dst->dev), ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(dev_net(skb_dst(skb)->dev), ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTFORWDATAGRAMS);
return dst_output(skb);
}
@@ -1532,8 +1531,8 @@ static int ip6mr_forward2(struct sk_buff *skb, struct mfc6_cache *c, int vifi)
if (!dst)
goto out_free;
- dst_release(skb->dst);
- skb->dst = dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, dst);
/*
* RFC1584 teaches, that DVMRP/PIM router must deliver packets locally
@@ -1722,7 +1721,7 @@ int ip6mr_get_route(struct net *net,
{
int err;
struct mfc6_cache *cache;
- struct rt6_info *rt = (struct rt6_info *)skb->dst;
+ struct rt6_info *rt = (struct rt6_info *)skb_dst(skb);
read_lock(&mrt_lock);
cache = ip6mr_cache_find(net, &rt->rt6i_src.addr, &rt->rt6i_dst.addr);
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 4b48819a5b8..4b264ed40a8 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1448,6 +1448,7 @@ static void mld_sendpack(struct sk_buff *skb)
struct net *net = dev_net(skb->dev);
int err;
struct flowi fl;
+ struct dst_entry *dst;
IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
@@ -1459,9 +1460,9 @@ static void mld_sendpack(struct sk_buff *skb)
IPPROTO_ICMPV6, csum_partial(skb_transport_header(skb),
mldlen, 0));
- skb->dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
+ dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
- if (!skb->dst) {
+ if (!dst) {
err = -ENOMEM;
goto err_out;
}
@@ -1470,7 +1471,8 @@ static void mld_sendpack(struct sk_buff *skb)
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
skb->dev->ifindex);
- err = xfrm_lookup(net, &skb->dst, &fl, NULL, 0);
+ err = xfrm_lookup(net, &dst, &fl, NULL, 0);
+ skb_dst_set(skb, dst);
if (err)
goto err_out;
@@ -1775,6 +1777,7 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
IPV6_TLV_ROUTERALERT, 2, 0, 0,
IPV6_TLV_PADN, 0 };
struct flowi fl;
+ struct dst_entry *dst;
if (type == ICMPV6_MGM_REDUCTION)
snd_addr = &in6addr_linklocal_allrouters;
@@ -1828,8 +1831,8 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
idev = in6_dev_get(skb->dev);
- skb->dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
- if (!skb->dst) {
+ dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
+ if (!dst) {
err = -ENOMEM;
goto err_out;
}
@@ -1838,11 +1841,11 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
skb->dev->ifindex);
- err = xfrm_lookup(net, &skb->dst, &fl, NULL, 0);
+ err = xfrm_lookup(net, &dst, &fl, NULL, 0);
if (err)
goto err_out;
-
+ skb_dst_set(skb, dst);
err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
dst_output);
out:
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 1d13d996498..9eb68e92cc1 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -530,7 +530,7 @@ void ndisc_send_skb(struct sk_buff *skb,
return;
}
- skb->dst = dst;
+ skb_dst_set(skb, dst);
idev = in6_dev_get(dst->dev);
IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
@@ -1612,7 +1612,7 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
len, IPPROTO_ICMPV6,
csum_partial(icmph, len, 0));
- buff->dst = dst;
+ skb_dst_set(buff, dst);
idev = in6_dev_get(dst->dev);
IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, buff, NULL, dst->dev,
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 834cea69fb5..d5ed92b1434 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -12,7 +12,7 @@
int ip6_route_me_harder(struct sk_buff *skb)
{
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
struct ipv6hdr *iph = ipv6_hdr(skb);
struct dst_entry *dst;
struct flowi fl = {
@@ -28,9 +28,15 @@ int ip6_route_me_harder(struct sk_buff *skb)
#ifdef CONFIG_XFRM
if (!(IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED) &&
- xfrm_decode_session(skb, &fl, AF_INET6) == 0)
- if (xfrm_lookup(net, &skb->dst, &fl, skb->sk, 0))
+ xfrm_decode_session(skb, &fl, AF_INET6) == 0) {
+ struct dst_entry *dst2 = skb_dst(skb);
+
+ if (xfrm_lookup(net, &dst2, &fl, skb->sk, 0)) {
+ skb_dst_set(skb, NULL);
return -1;
+ }
+ skb_dst_set(skb, dst2);
+ }
#endif
if (dst->error) {
@@ -41,9 +47,9 @@ int ip6_route_me_harder(struct sk_buff *skb)
}
/* Drop old route. */
- dst_release(skb->dst);
+ skb_dst_drop(skb);
- skb->dst = dst;
+ skb_dst_set(skb, dst);
return 0;
}
EXPORT_SYMBOL(ip6_route_me_harder);
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 5a2d0a41694..5a7f00cd15c 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -112,7 +112,7 @@ static void send_reset(struct net *net, struct sk_buff *oldskb)
return;
}
- nskb->dst = dst;
+ skb_dst_set(nskb, dst);
skb_reserve(nskb, hh_len + dst->header_len);
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index e99307fba0b..36a090d87a3 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -625,7 +625,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
skb_put(skb, length);
skb_reset_network_header(skb);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index e9ac7a12f59..54a387d31e1 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -267,7 +267,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
struct sk_buff *prev, *next;
struct net_device *dev;
int offset, end;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
if (fq->q.last_in & INET_FRAG_COMPLETE)
goto err;
@@ -277,7 +277,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
((u8 *)(fhdr + 1) - (u8 *)(ipv6_hdr(skb) + 1)));
if ((unsigned int)end > IPV6_MAXPLEN) {
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
((u8 *)&fhdr->frag_off -
@@ -310,7 +310,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
/* RFC2460 says always send parameter problem in
* this case. -DaveM
*/
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
offsetof(struct ipv6hdr, payload_len));
@@ -434,7 +434,7 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
return -1;
err:
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst),
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS);
kfree_skb(skb);
return -1;
@@ -576,9 +576,9 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
struct frag_hdr *fhdr;
struct frag_queue *fq;
struct ipv6hdr *hdr = ipv6_hdr(skb);
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst), IPSTATS_MIB_REASMREQDS);
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMREQDS);
/* Jumbo payload inhibits frag. header */
if (hdr->payload_len==0)
@@ -595,17 +595,17 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
/* It is not a fragmented frame */
skb->transport_header += sizeof(struct frag_hdr);
IP6_INC_STATS_BH(net,
- ip6_dst_idev(skb->dst), IPSTATS_MIB_REASMOKS);
+ ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMOKS);
IP6CB(skb)->nhoff = (u8 *)fhdr - skb_network_header(skb);
return 1;
}
if (atomic_read(&net->ipv6.frags.mem) > net->ipv6.frags.high_thresh)
- ip6_evictor(net, ip6_dst_idev(skb->dst));
+ ip6_evictor(net, ip6_dst_idev(skb_dst(skb)));
if ((fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr,
- ip6_dst_idev(skb->dst))) != NULL) {
+ ip6_dst_idev(skb_dst(skb)))) != NULL) {
int ret;
spin_lock(&fq->q.lock);
@@ -617,12 +617,12 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
return ret;
}
- IP6_INC_STATS_BH(net, ip6_dst_idev(skb->dst), IPSTATS_MIB_REASMFAILS);
+ IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMFAILS);
kfree_skb(skb);
return -1;
fail_hdr:
- IP6_INC_STATS(net, ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, skb_network_header_len(skb));
return -1;
}
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 032a5ec391c..658293ea05b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -800,7 +800,7 @@ void ip6_route_input(struct sk_buff *skb)
if (rt6_need_strict(&iph->daddr) && skb->dev->type != ARPHRD_PIMREG)
flags |= RT6_LOOKUP_F_IFACE;
- skb->dst = fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input);
+ skb_dst_set(skb, fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input));
}
static struct rt6_info *ip6_pol_route_output(struct net *net, struct fib6_table *table,
@@ -911,7 +911,7 @@ static void ip6_link_failure(struct sk_buff *skb)
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH, 0, skb->dev);
- rt = (struct rt6_info *) skb->dst;
+ rt = (struct rt6_info *) skb_dst(skb);
if (rt) {
if (rt->rt6i_flags&RTF_CACHE) {
dst_set_expires(&rt->u.dst, 0);
@@ -1868,7 +1868,7 @@ int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg)
static int ip6_pkt_drop(struct sk_buff *skb, int code, int ipstats_mib_noroutes)
{
int type;
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
switch (ipstats_mib_noroutes) {
case IPSTATS_MIB_INNOROUTES:
type = ipv6_addr_type(&ipv6_hdr(skb)->daddr);
@@ -1895,7 +1895,7 @@ static int ip6_pkt_discard(struct sk_buff *skb)
static int ip6_pkt_discard_out(struct sk_buff *skb)
{
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_OUTNOROUTES);
}
@@ -1908,7 +1908,7 @@ static int ip6_pkt_prohibit(struct sk_buff *skb)
static int ip6_pkt_prohibit_out(struct sk_buff *skb)
{
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
}
@@ -2366,7 +2366,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr));
rt = (struct rt6_info*) ip6_route_output(net, NULL, &fl);
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
err = rt6_fill_node(net, skb, rt, &fl.fl6_dst, &fl.fl6_src, iif,
RTM_NEWROUTE, NETLINK_CB(in_skb).pid,
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index b3a59bd40f0..68e52308e55 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -575,8 +575,7 @@ static int ipip6_rcv(struct sk_buff *skb)
tunnel->dev->stats.rx_packets++;
tunnel->dev->stats.rx_bytes += skb->len;
skb->dev = tunnel->dev;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
nf_reset(skb);
ipip6_ecn_decapsulate(iph, skb);
netif_rx(skb);
@@ -638,8 +637,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (dev->priv_flags & IFF_ISATAP) {
struct neighbour *neigh = NULL;
- if (skb->dst)
- neigh = skb->dst->neighbour;
+ if (skb_dst(skb))
+ neigh = skb_dst(skb)->neighbour;
if (neigh == NULL) {
if (net_ratelimit())
@@ -663,8 +662,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (!dst) {
struct neighbour *neigh = NULL;
- if (skb->dst)
- neigh = skb->dst->neighbour;
+ if (skb_dst(skb))
+ neigh = skb_dst(skb)->neighbour;
if (neigh == NULL) {
if (net_ratelimit())
@@ -714,7 +713,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (tiph->frag_off)
mtu = dst_mtu(&rt->u.dst) - sizeof(struct iphdr);
else
- mtu = skb->dst ? dst_mtu(skb->dst) : dev->mtu;
+ mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
if (mtu < 68) {
stats->collisions++;
@@ -723,8 +722,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
}
if (mtu < IPV6_MIN_MTU)
mtu = IPV6_MIN_MTU;
- if (tunnel->parms.iph.daddr && skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (tunnel->parms.iph.daddr && skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
if (skb->len > mtu) {
icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu, dev);
@@ -768,8 +767,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
skb_reset_network_header(skb);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags = 0;
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/*
* Push down and install the IPIP header.
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index ea37741062a..53b6a4192b1 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -981,9 +981,10 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
struct tcphdr *th = tcp_hdr(skb), *t1;
struct sk_buff *buff;
struct flowi fl;
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
struct sock *ctl_sk = net->ipv6.tcp_sk;
unsigned int tot_len = sizeof(struct tcphdr);
+ struct dst_entry *dst;
__be32 *topt;
if (ts)
@@ -1052,8 +1053,9 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
* Underlying function will use this to retrieve the network
* namespace
*/
- if (!ip6_dst_lookup(ctl_sk, &buff->dst, &fl)) {
- if (xfrm_lookup(net, &buff->dst, &fl, NULL, 0) >= 0) {
+ if (!ip6_dst_lookup(ctl_sk, &dst, &fl)) {
+ if (xfrm_lookup(net, &dst, &fl, NULL, 0) >= 0) {
+ skb_dst_set(buff, dst);
ip6_xmit(ctl_sk, buff, &fl, NULL, 0);
TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
if (rst)
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 8905712cfbb..fc333d85472 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -177,10 +177,9 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
if (unlikely(sk = skb_steal_sock(skb)))
return sk;
- else
- return __udp6_lib_lookup(dev_net(skb->dst->dev), &iph->saddr, sport,
- &iph->daddr, dport, inet6_iif(skb),
- udptable);
+ return __udp6_lib_lookup(dev_net(skb_dst(skb)->dev), &iph->saddr, sport,
+ &iph->daddr, dport, inet6_iif(skb),
+ udptable);
}
/*
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index e20529b4c82..3927832227b 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -31,7 +31,7 @@ static inline void ipip6_ecn_decapsulate(struct sk_buff *skb)
*/
static int xfrm6_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct ipv6hdr *top_iph;
int dsfield;
@@ -45,7 +45,7 @@ static int xfrm6_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
memcpy(top_iph->flow_lbl, XFRM_MODE_SKB_CB(skb)->flow_lbl,
sizeof(top_iph->flow_lbl));
- top_iph->nexthdr = xfrm_af2proto(skb->dst->ops->family);
+ top_iph->nexthdr = xfrm_af2proto(skb_dst(skb)->ops->family);
dsfield = XFRM_MODE_SKB_CB(skb)->tos;
dsfield = INET_ECN_encapsulate(dsfield, dsfield);
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 5ee5a031bc9..c4f4eef032a 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -30,7 +30,7 @@ EXPORT_SYMBOL(xfrm6_find_1stfragopt);
static int xfrm6_tunnel_check_size(struct sk_buff *skb)
{
int mtu, ret = 0;
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
mtu = dst_mtu(dst);
if (mtu < IPV6_MIN_MTU)
@@ -90,6 +90,6 @@ static int xfrm6_output_finish(struct sk_buff *skb)
int xfrm6_output(struct sk_buff *skb)
{
- return NF_HOOK(PF_INET6, NF_INET_POST_ROUTING, skb, NULL, skb->dst->dev,
+ return NF_HOOK(PF_INET6, NF_INET_POST_ROUTING, skb, NULL, skb_dst(skb)->dev,
xfrm6_output_finish);
}
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 425ab144f15..5874657af7f 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -260,8 +260,8 @@ ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_send_check(ip_hdr(skb));
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
@@ -324,8 +324,8 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
@@ -388,8 +388,8 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error_put;
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/* mangle the packet */
if (pp->dnat_handler && !pp->dnat_handler(skb, pp, cp))
@@ -465,8 +465,8 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error_put;
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/* mangle the packet */
if (pp->dnat_handler && !pp->dnat_handler(skb, pp, cp))
@@ -553,8 +553,8 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_DBG_RL("ip_vs_tunnel_xmit(): mtu less than 68\n");
goto tx_error;
}
- if (skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
df |= (old_iph->frag_off & htons(IP_DF));
@@ -596,8 +596,8 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/*
* Push down and install the IPIP header.
@@ -665,8 +665,8 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_DBG_RL("ip_vs_tunnel_xmit_v6(): mtu less than 1280\n");
goto tx_error;
}
- if (skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
if (mtu < ntohs(old_iph->payload_len) + sizeof(struct ipv6hdr)) {
icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu, skb->dev);
@@ -702,8 +702,8 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/*
* Push down and install the IPIP header.
@@ -775,8 +775,8 @@ ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
ip_send_check(ip_hdr(skb));
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
@@ -828,8 +828,8 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* drop old route */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
/* Another hack: avoid icmp_send in ip_fragment */
skb->local_df = 1;
@@ -900,8 +900,8 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error_put;
/* drop the old route when skb is not shared */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
ip_vs_nat_icmp(skb, pp, cp, 0);
@@ -975,8 +975,8 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error_put;
/* drop the old route when skb is not shared */
- dst_release(skb->dst);
- skb->dst = &rt->u.dst;
+ skb_dst_drop(skb);
+ skb_dst_set(skb, &rt->u.dst);
ip_vs_nat_icmp_v6(skb, pp, cp, 0);
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 117b80112fc..a6d6ec320fb 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -176,7 +176,7 @@ static bool gre_invert_tuple(struct nf_conntrack_tuple *tuple,
static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
struct nf_conntrack_tuple *tuple)
{
- struct net *net = dev_net(skb->dev ? skb->dev : skb->dst->dev);
+ struct net *net = dev_net(skb->dev ? skb->dev : skb_dst(skb)->dev);
const struct gre_hdr_pptp *pgrehdr;
struct gre_hdr_pptp _pgrehdr;
__be16 srckey;
diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 4f3b1f80879..eda64c1cb1e 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -73,11 +73,11 @@ tcpmss_mangle_packet(struct sk_buff *skb,
}
if (info->mss == XT_TCPMSS_CLAMP_PMTU) {
- if (dst_mtu(skb->dst) <= minlen) {
+ if (dst_mtu(skb_dst(skb)) <= minlen) {
if (net_ratelimit())
printk(KERN_ERR "xt_TCPMSS: "
"unknown or invalid path-MTU (%u)\n",
- dst_mtu(skb->dst));
+ dst_mtu(skb_dst(skb)));
return -1;
}
if (in_mtu <= minlen) {
@@ -86,7 +86,7 @@ tcpmss_mangle_packet(struct sk_buff *skb,
"invalid path-MTU (%u)\n", in_mtu);
return -1;
}
- newmss = min(dst_mtu(skb->dst), in_mtu) - minlen;
+ newmss = min(dst_mtu(skb_dst(skb)), in_mtu) - minlen;
} else
newmss = info->mss;
diff --git a/net/netfilter/xt_policy.c b/net/netfilter/xt_policy.c
index 328bd20ddd2..4cbfebda8fa 100644
--- a/net/netfilter/xt_policy.c
+++ b/net/netfilter/xt_policy.c
@@ -86,7 +86,7 @@ match_policy_out(const struct sk_buff *skb, const struct xt_policy_info *info,
unsigned short family)
{
const struct xt_policy_elem *e;
- const struct dst_entry *dst = skb->dst;
+ const struct dst_entry *dst = skb_dst(skb);
int strict = info->flags & XT_POLICY_MATCH_STRICT;
int i, pos;
diff --git a/net/netfilter/xt_realm.c b/net/netfilter/xt_realm.c
index 67419287bc7..484d1689bfd 100644
--- a/net/netfilter/xt_realm.c
+++ b/net/netfilter/xt_realm.c
@@ -25,7 +25,7 @@ static bool
realm_mt(const struct sk_buff *skb, const struct xt_match_param *par)
{
const struct xt_realm_info *info = par->matchinfo;
- const struct dst_entry *dst = skb->dst;
+ const struct dst_entry *dst = skb_dst(skb);
return (info->id == (dst->tclassid & info->mask)) ^ info->invert;
}
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 6da9f38ef5c..4f76e5552d8 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -372,8 +372,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, struct
goto oom;
/* drop any routing info */
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
/* drop conntrack reference */
nf_reset(skb);
@@ -621,8 +620,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
skb_set_owner_r(skb, sk);
skb->dev = NULL;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
/* drop conntrack reference */
nf_reset(skb);
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 0ef4e3065bc..9402a7fd378 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -84,7 +84,7 @@ static u32 flow_get_dst(const struct sk_buff *skb)
case htons(ETH_P_IPV6):
return ntohl(ipv6_hdr(skb)->daddr.s6_addr32[3]);
default:
- return addr_fold(skb->dst) ^ (__force u16)skb->protocol;
+ return addr_fold(skb_dst(skb)) ^ (__force u16)skb->protocol;
}
}
@@ -163,7 +163,7 @@ static u32 flow_get_proto_dst(const struct sk_buff *skb)
break;
}
default:
- res = addr_fold(skb->dst) ^ (__force u16)skb->protocol;
+ res = addr_fold(skb_dst(skb)) ^ (__force u16)skb->protocol;
}
return res;
@@ -251,8 +251,8 @@ fallback:
static u32 flow_get_rtclassid(const struct sk_buff *skb)
{
#ifdef CONFIG_NET_CLS_ROUTE
- if (skb->dst)
- return skb->dst->tclassid;
+ if (skb_dst(skb))
+ return skb_dst(skb)->tclassid;
#endif
return 0;
}
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index bdf1f4172ee..dd872d5383e 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -137,7 +137,7 @@ static int route4_classify(struct sk_buff *skb, struct tcf_proto *tp,
u32 id, h;
int iif, dont_cache = 0;
- if ((dst = skb->dst) == NULL)
+ if ((dst = skb_dst(skb)) == NULL)
goto failure;
id = dst->tclassid;
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index b6b588bed4e..266151ae85a 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -246,11 +246,11 @@ META_COLLECTOR(int_tcindex)
META_COLLECTOR(int_rtclassid)
{
- if (unlikely(skb->dst == NULL))
+ if (unlikely(skb_dst(skb) == NULL))
*err = -1;
else
#ifdef CONFIG_NET_CLS_ROUTE
- dst->value = skb->dst->tclassid;
+ dst->value = skb_dst(skb)->tclassid;
#else
dst->value = 0;
#endif
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index 33133d27b53..8706920a6d4 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -149,7 +149,7 @@ static unsigned sfq_hash(struct sfq_sched_data *q, struct sk_buff *skb)
break;
}
default:
- h = (unsigned long)skb->dst ^ skb->protocol;
+ h = (unsigned long)skb_dst(skb) ^ skb->protocol;
h2 = (unsigned long)skb->sk;
}
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index a886496bdc3..cb1cb1e76b9 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -222,7 +222,7 @@ __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device *
{
struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, 0);
struct teql_sched_data *q = qdisc_priv(dev_queue->qdisc);
- struct neighbour *mn = skb->dst->neighbour;
+ struct neighbour *mn = skb_dst(skb)->neighbour;
struct neighbour *n = q->ncache;
if (mn->tbl == NULL)
@@ -262,8 +262,8 @@ static inline int teql_resolve(struct sk_buff *skb,
return -ENODEV;
if (dev->header_ops == NULL ||
- skb->dst == NULL ||
- skb->dst->neighbour == NULL)
+ skb_dst(skb) == NULL ||
+ skb_dst(skb)->neighbour == NULL)
return 0;
return __teql_resolve(skb, skb_res, dev);
}
diff --git a/net/sctp/output.c b/net/sctp/output.c
index f0c91df59d4..b7641144451 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -405,10 +405,10 @@ int sctp_packet_transmit(struct sctp_packet *packet)
sctp_assoc_sync_pmtu(asoc);
}
}
- nskb->dst = dst_clone(tp->dst);
- if (!nskb->dst)
+ dst = dst_clone(tp->dst);
+ skb_dst_set(nskb, dst);
+ if (dst)
goto no_route;
- dst = nskb->dst;
/* Build the SCTP header. */
sh = (struct sctphdr *)skb_push(nskb, sizeof(struct sctphdr));
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index e1859614601..6c2d6158655 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -918,7 +918,7 @@ static void xs_udp_data_ready(struct sock *sk, int len)
UDPX_INC_STATS_BH(sk, UDP_MIB_INDATAGRAMS);
/* Something worked... */
- dst_confirm(skb->dst);
+ dst_confirm(skb_dst(skb));
xprt_adjust_cwnd(task, copied);
xprt_update_rtt(task);
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index b4a13178fb4..e0009c17d80 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -251,8 +251,7 @@ resume:
nf_reset(skb);
if (decaps) {
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
netif_rx(skb);
return 0;
} else {
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index c235597ba8d..b9fe13138c0 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -22,7 +22,7 @@ static int xfrm_output2(struct sk_buff *skb);
static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
int nhead = dst->header_len + LL_RESERVED_SPACE(dst->dev)
- skb_headroom(skb);
int ntail = dst->dev->needed_tailroom - skb_tailroom(skb);
@@ -39,7 +39,7 @@ static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
static int xfrm_output_one(struct sk_buff *skb, int err)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct xfrm_state *x = dst->xfrm;
struct net *net = xs_net(x);
@@ -94,12 +94,13 @@ resume:
goto error_nolock;
}
- if (!(skb->dst = dst_pop(dst))) {
+ dst = dst_pop(dst);
+ if (!dst) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
err = -EHOSTUNREACH;
goto error_nolock;
}
- dst = skb->dst;
+ skb_dst_set(skb, dst);
x = dst->xfrm;
} while (x && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL));
@@ -119,16 +120,16 @@ int xfrm_output_resume(struct sk_buff *skb, int err)
while (likely((err = xfrm_output_one(skb, err)) == 0)) {
nf_reset(skb);
- err = skb->dst->ops->local_out(skb);
+ err = skb_dst(skb)->ops->local_out(skb);
if (unlikely(err != 1))
goto out;
- if (!skb->dst->xfrm)
+ if (!skb_dst(skb)->xfrm)
return dst_output(skb);
- err = nf_hook(skb->dst->ops->family,
+ err = nf_hook(skb_dst(skb)->ops->family,
NF_INET_POST_ROUTING, skb,
- NULL, skb->dst->dev, xfrm_output2);
+ NULL, skb_dst(skb)->dev, xfrm_output2);
if (unlikely(err != 1))
goto out;
}
@@ -179,7 +180,7 @@ static int xfrm_output_gso(struct sk_buff *skb)
int xfrm_output(struct sk_buff *skb)
{
- struct net *net = dev_net(skb->dst->dev);
+ struct net *net = dev_net(skb_dst(skb)->dev);
int err;
if (skb_is_gso(skb))
@@ -202,7 +203,7 @@ int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb)
struct xfrm_mode *inner_mode;
if (x->sel.family == AF_UNSPEC)
inner_mode = xfrm_ip2inner_mode(x,
- xfrm_af2proto(skb->dst->ops->family));
+ xfrm_af2proto(skb_dst(skb)->ops->family));
else
inner_mode = x->inner_mode;
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 9c068ab3a83..cb81ca35b0d 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2027,6 +2027,8 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family)
{
struct net *net = dev_net(skb->dev);
struct flowi fl;
+ struct dst_entry *dst;
+ int res;
if (xfrm_decode_session(skb, &fl, family) < 0) {
/* XXX: we should have something like FWDHDRERROR here. */
@@ -2034,7 +2036,11 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family)
return 0;
}
- return xfrm_lookup(net, &skb->dst, &fl, NULL, 0) == 0;
+ dst = skb_dst(skb);
+
+ res = xfrm_lookup(net, &dst, &fl, NULL, 0) == 0;
+ skb_dst_set(skb, dst);
+ return res;
}
EXPORT_SYMBOL(__xfrm_route_forward);