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: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c
index 9832b75..78cea5e 100644 (file)
--- a/drivers/net/appletalk/ipddp.c
+++ b/drivers/net/appletalk/ipddp.c
@@ -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;

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d4d7c66..a3ae3c5 100644 (file)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -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);

diff --git a/include/net/route.h b/include/net/route.h
index 4e8cae0..40f6346 100644 (file)
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -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 */

diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index e4a418f..e0ceb66 100644 (file)
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -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;

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index d1dd952..2cf48ba 100644 (file)
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -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)) {

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index f11931c..816494f 100644 (file)
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -474,7 +474,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
                return 1;
        }
 
-       paddr = skb->rtable->rt_gateway;
+       paddr = skb_rtable(skb)->rt_gateway;
 
        if (arp_set_predefined(inet_addr_type(dev_net(dev), paddr), haddr, paddr, dev))
                return 0;
@@ -817,7 +817,7 @@ static int arp_process(struct sk_buff *skb)
        if (arp->ar_op == htons(ARPOP_REQUEST) &&
            ip_route_input(skb, tip, sip, 0, dev) == 0) {
 
-               rt = skb->rtable;
+               rt = skb_rtable(skb);
                addr_type = rt->rt_type;
 
                if (addr_type == RTN_LOCAL) {

diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 3f50807..94f75ef 100644 (file)
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -356,7 +356,7 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param,
 static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
 {
        struct ipcm_cookie ipc;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct net *net = dev_net(rt->u.dst.dev);
        struct sock *sk;
        struct inet_sock *inet;
@@ -416,7 +416,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
        struct iphdr *iph;
        int room;
        struct icmp_bxm icmp_param;
-       struct rtable *rt = skb_in->rtable;
+       struct rtable *rt = skb_rtable(skb_in);
        struct ipcm_cookie ipc;
        __be32 saddr;
        u8  tos;
@@ -596,7 +596,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
                                             RT_TOS(tos), rt2->u.dst.dev);
 
                        dst_release(&rt2->u.dst);
-                       rt2 = skb_in->rtable;
+                       rt2 = skb_rtable(skb_in);
                        skb_in->dst = odst;
                }
 
@@ -926,7 +926,7 @@ static void icmp_address(struct sk_buff *skb)
 
 static void icmp_address_reply(struct sk_buff *skb)
 {
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct net_device *dev = skb->dev;
        struct in_device *in_dev;
        struct in_ifaddr *ifa;
@@ -970,7 +970,7 @@ static void icmp_discard(struct sk_buff *skb)
 int icmp_rcv(struct sk_buff *skb)
 {
        struct icmphdr *icmph;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct net *net = dev_net(rt->u.dst.dev);
 
        if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index e6058a5..afabd27 100644 (file)
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -948,7 +948,7 @@ int igmp_rcv(struct sk_buff *skb)
        case IGMPV2_HOST_MEMBERSHIP_REPORT:
        case IGMPV3_HOST_MEMBERSHIP_REPORT:
                /* Is it our report looped back? */
-               if (skb->rtable->fl.iif == 0)
+               if (skb_rtable(skb)->fl.iif == 0)
                        break;
                /* don't rely on MC router hearing unicast reports */
                if (skb->pkt_type == PACKET_MULTICAST ||

diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index df3fe50..0761cd9 100644 (file)
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -81,7 +81,7 @@ int ip_forward(struct sk_buff *skb)
        if (!xfrm4_route_forward(skb))
                goto drop;
 
-       rt = skb->rtable;
+       rt = skb_rtable(skb);
 
        if (opt->is_strictroute && rt->rt_dst != rt->rt_gateway)
                goto sr_failed;

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 77436e2..85ddad4 100644 (file)
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -602,7 +602,7 @@ static int ipgre_rcv(struct sk_buff *skb)
 #ifdef CONFIG_NET_IPGRE_BROADCAST
                if (ipv4_is_multicast(iph->daddr)) {
                        /* Looped back packet, drop it! */
-                       if (skb->rtable->fl.iif == 0)
+                       if (skb_rtable(skb)->fl.iif == 0)
                                goto drop;
                        stats->multicast++;
                        skb->pkt_type = PACKET_BROADCAST;
@@ -704,7 +704,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
                }
 
                if (skb->protocol == htons(ETH_P_IP)) {
-                       rt = skb->rtable;
+                       rt = skb_rtable(skb);
                        if ((dst = rt->rt_gateway) == 0)
                                goto tx_error_icmp;
                }

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 40f6206..cea784b 100644 (file)
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -357,7 +357,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
        if (iph->ihl > 5 && ip_rcv_options(skb))
                goto drop;
 
-       rt = skb->rtable;
+       rt = skb_rtable(skb);
        if (rt->rt_type == RTN_MULTICAST) {
                IP_UPD_PO_STATS_BH(dev_net(rt->u.dst.dev), IPSTATS_MIB_INMCAST,
                                skb->len);

diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 2c88da6..7e1074f 100644 (file)
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -102,7 +102,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
        sptr = skb_network_header(skb);
        dptr = dopt->__data;
 
-       daddr = skb->rtable->rt_spec_dst;
+       daddr = skb_rtable(skb)->rt_spec_dst;
 
        if (sopt->rr) {
                optlen  = sptr[sopt->rr+1];
@@ -257,7 +257,7 @@ int ip_options_compile(struct net *net,
        struct rtable *rt = NULL;
 
        if (skb != NULL) {
-               rt = skb->rtable;
+               rt = skb_rtable(skb);
                optptr = (unsigned char *)&(ip_hdr(skb)[1]);
        } else
                optptr = opt->__data;
@@ -550,7 +550,7 @@ void ip_forward_options(struct sk_buff *skb)
 {
        struct   ip_options * opt       = &(IPCB(skb)->opt);
        unsigned char * optptr;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        unsigned char *raw = skb_network_header(skb);
 
        if (opt->rr_needaddr) {
@@ -598,7 +598,7 @@ int ip_options_rcv_srr(struct sk_buff *skb)
        __be32 nexthop;
        struct iphdr *iph = ip_hdr(skb);
        unsigned char *optptr = skb_network_header(skb) + opt->srr;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct rtable *rt2;
        int err;
 
@@ -623,13 +623,13 @@ int ip_options_rcv_srr(struct sk_buff *skb)
                }
                memcpy(&nexthop, &optptr[srrptr-1], 4);
 
-               rt = skb->rtable;
-               skb->rtable = NULL;
+               rt = skb_rtable(skb);
+               skb->dst = NULL;
                err = ip_route_input(skb, nexthop, iph->saddr, iph->tos, skb->dev);
-               rt2 = skb->rtable;
+               rt2 = skb_rtable(skb);
                if (err || (rt2->rt_type != RTN_UNICAST && rt2->rt_type != RTN_LOCAL)) {
                        ip_rt_put(rt2);
-                       skb->rtable = rt;
+                       skb->dst = &rt->u.dst;
                        return -EINVAL;
                }
                ip_rt_put(rt);

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ea19c37..8d845eb 100644 (file)
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -140,7 +140,7 @@ int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
                          __be32 saddr, __be32 daddr, struct ip_options *opt)
 {
        struct inet_sock *inet = inet_sk(sk);
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct iphdr *iph;
 
        /* Build the IP header. */
@@ -238,7 +238,7 @@ static int ip_finish_output(struct sk_buff *skb)
 int ip_mc_output(struct sk_buff *skb)
 {
        struct sock *sk = skb->sk;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct net_device *dev = rt->u.dst.dev;
 
        /*
@@ -319,7 +319,7 @@ int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
        /* Skip all of this if the packet is already routed,
         * f.e. by something like SCTP.
         */
-       rt = skb->rtable;
+       rt = skb_rtable(skb);
        if (rt != NULL)
                goto packet_routed;
 
@@ -440,7 +440,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
        unsigned int mtu, hlen, left, len, ll_rs, pad;
        int offset;
        __be16 not_last_frag;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        int err = 0;
 
        dev = rt->u.dst.dev;
@@ -1362,7 +1362,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
        } replyopts;
        struct ipcm_cookie ipc;
        __be32 daddr;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
 
        if (ip_options_echo(&replyopts.opt, skb))
                return;

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index cb49936..fc7993e 100644 (file)
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -57,7 +57,7 @@
 static void ip_cmsg_recv_pktinfo(struct msghdr *msg, struct sk_buff *skb)
 {
        struct in_pktinfo info;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
 
        info.ipi_addr.s_addr = ip_hdr(skb)->daddr;
        if (rt) {

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index bb2f1b1..0c6e7bf 100644 (file)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -416,7 +416,7 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 
        if (!dst) {
                /* NBMA tunnel */
-               if ((rt = skb->rtable) == NULL) {
+               if ((rt = skb_rtable(skb)) == NULL) {
                        stats->tx_fifo_errors++;
                        goto tx_error;
                }

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 13e9dd3..69dd058 100644 (file)
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1354,7 +1354,7 @@ static int ip_mr_forward(struct sk_buff *skb, struct mfc_cache *cache, int local
        if (net->ipv4.vif_table[vif].dev != skb->dev) {
                int true_vifi;
 
-               if (skb->rtable->fl.iif == 0) {
+               if (skb_rtable(skb)->fl.iif == 0) {
                        /* It is our own packet, looped back.
                           Very complicated situation...
 
@@ -1430,7 +1430,7 @@ int ip_mr_input(struct sk_buff *skb)
 {
        struct mfc_cache *cache;
        struct net *net = dev_net(skb->dev);
-       int local = skb->rtable->rt_flags&RTCF_LOCAL;
+       int local = skb_rtable(skb)->rt_flags & RTCF_LOCAL;
 
        /* Packet is looped back after forward, it should not be
           forwarded second time, but still can be delivered locally.
@@ -1646,7 +1646,7 @@ int ipmr_get_route(struct net *net,
 {
        int err;
        struct mfc_cache *cache;
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
 
        read_lock(&mrt_lock);
        cache = ipmr_cache_find(net, rt->rt_src, rt->rt_dst);

diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/ipv4/netfilter/ipt_MASQUERADE.c
index f389f60..c0992c7 100644 (file)
--- a/net/ipv4/netfilter/ipt_MASQUERADE.c
+++ b/net/ipv4/netfilter/ipt_MASQUERADE.c
@@ -72,7 +72,7 @@ masquerade_tg(struct sk_buff *skb, const struct xt_target_param *par)
                return NF_ACCEPT;
 
        mr = par->targinfo;
-       rt = skb->rtable;
+       rt = skb_rtable(skb);
        newsrc = inet_select_addr(par->out, rt->rt_gateway, RT_SCOPE_UNIVERSE);
        if (!newsrc) {
                printk("MASQUERADE: %s ate my IP address\n", par->out->name);

diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c
index cf7a42b..155c008 100644 (file)
--- a/net/ipv4/netfilter/nf_nat_helper.c
+++ b/net/ipv4/netfilter/nf_nat_helper.c
@@ -140,7 +140,7 @@ nf_nat_mangle_tcp_packet(struct sk_buff *skb,
                         const char *rep_buffer,
                         unsigned int rep_len)
 {
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct iphdr *iph;
        struct tcphdr *tcph;
        int oldlen, datalen;
@@ -218,7 +218,7 @@ nf_nat_mangle_udp_packet(struct sk_buff *skb,
                         const char *rep_buffer,
                         unsigned int rep_len)
 {
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct iphdr *iph;
        struct udphdr *udph;
        int datalen, oldlen;

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 28205e5..f20060a 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1064,7 +1064,8 @@ work_done:
 out:   return 0;
 }
 
-static int rt_intern_hash(unsigned hash, struct rtable *rt, struct rtable **rp)
+static int rt_intern_hash(unsigned hash, struct rtable *rt,
+                         struct rtable **rp, struct sk_buff *skb)
 {
        struct rtable   *rth, **rthp;
        unsigned long   now;
@@ -1114,7 +1115,10 @@ restart:
                        spin_unlock_bh(rt_hash_lock_addr(hash));
 
                        rt_drop(rt);
-                       *rp = rth;
+                       if (rp)
+                               *rp = rth;
+                       else
+                               skb->dst = &rth->u.dst;
                        return 0;
                }
 
@@ -1210,7 +1214,10 @@ restart:
        rcu_assign_pointer(rt_hash_table[hash].chain, rt);
 
        spin_unlock_bh(rt_hash_lock_addr(hash));
-       *rp = rt;
+       if (rp)
+               *rp = rt;
+       else
+               skb->dst = &rt->u.dst;
        return 0;
 }
 
@@ -1407,7 +1414,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                                                        &netevent);
 
                                rt_del(hash, rth);
-                               if (!rt_intern_hash(hash, rt, &rt))
+                               if (!rt_intern_hash(hash, rt, &rt, NULL))
                                        ip_rt_put(rt);
                                goto do_next;
                        }
@@ -1473,7 +1480,7 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
 
 void ip_rt_send_redirect(struct sk_buff *skb)
 {
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct in_device *in_dev = in_dev_get(rt->u.dst.dev);
 
        if (!in_dev)
@@ -1521,7 +1528,7 @@ out:
 
 static int ip_error(struct sk_buff *skb)
 {
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        unsigned long now;
        int code;
 
@@ -1698,7 +1705,7 @@ static void ipv4_link_failure(struct sk_buff *skb)
 
        icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0);
 
-       rt = skb->rtable;
+       rt = skb_rtable(skb);
        if (rt)
                dst_set_expires(&rt->u.dst, 0);
 }
@@ -1858,7 +1865,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 
        in_dev_put(in_dev);
        hash = rt_hash(daddr, saddr, dev->ifindex, rt_genid(dev_net(dev)));
-       return rt_intern_hash(hash, rth, &skb->rtable);
+       return rt_intern_hash(hash, rth, NULL, skb);
 
 e_nobufs:
        in_dev_put(in_dev);
@@ -2019,7 +2026,7 @@ static int ip_mkroute_input(struct sk_buff *skb,
        /* put it into the cache */
        hash = rt_hash(daddr, saddr, fl->iif,
                       rt_genid(dev_net(rth->u.dst.dev)));
-       return rt_intern_hash(hash, rth, &skb->rtable);
+       return rt_intern_hash(hash, rth, NULL, skb);
 }
 
 /*
@@ -2175,7 +2182,7 @@ local_input:
        }
        rth->rt_type    = res.type;
        hash = rt_hash(daddr, saddr, fl.iif, rt_genid(net));
-       err = rt_intern_hash(hash, rth, &skb->rtable);
+       err = rt_intern_hash(hash, rth, NULL, skb);
        goto done;
 
 no_route:
@@ -2244,7 +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->rtable = rth;
+                       skb->dst = &rth->u.dst;
                        return 0;
                }
                RT_CACHE_STAT_INC(in_hlist_search);
@@ -2420,7 +2427,7 @@ static int ip_mkroute_output(struct rtable **rp,
        if (err == 0) {
                hash = rt_hash(oldflp->fl4_dst, oldflp->fl4_src, oldflp->oif,
                               rt_genid(dev_net(dev_out)));
-               err = rt_intern_hash(hash, rth, rp);
+               err = rt_intern_hash(hash, rth, rp, NULL);
        }
 
        return err;
@@ -2763,7 +2770,7 @@ static int rt_fill_info(struct net *net,
                        struct sk_buff *skb, u32 pid, u32 seq, int event,
                        int nowait, unsigned int flags)
 {
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct rtmsg *r;
        struct nlmsghdr *nlh;
        long expires;
@@ -2907,7 +2914,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
                err = ip_route_input(skb, dst, src, rtm->rtm_tos, dev);
                local_bh_enable();
 
-               rt = skb->rtable;
+               rt = skb_rtable(skb);
                if (err == 0 && rt->u.dst.error)
                        err = -rt->u.dst.error;
        } else {
@@ -2927,7 +2934,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
        if (err)
                goto errout_free;
 
-       skb->rtable = rt;
+       skb->dst = &rt->u.dst;
        if (rtm->rtm_flags & RTM_F_NOTIFY)
                rt->rt_flags |= RTCF_NOTIFY;
 

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index fc79e34..319c885 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -546,7 +546,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
        if (th->rst)
                return;
 
-       if (skb->rtable->rt_type != RTN_LOCAL)
+       if (skb_rtable(skb)->rt_type != RTN_LOCAL)
                return;
 
        /* Swap the send and the receive. */
@@ -1185,7 +1185,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 #endif
 
        /* Never answer to SYNs send to broadcast or multicast */
-       if (skb->rtable->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
+       if (skb_rtable(skb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
                goto drop;
 
        /* TW buckets are converted to open requests without

diff --git a/net/netfilter/nf_conntrack_netbios_ns.c b/net/netfilter/nf_conntrack_netbios_ns.c
index 8a3875e..497b222 100644 (file)
--- a/net/netfilter/nf_conntrack_netbios_ns.c
+++ b/net/netfilter/nf_conntrack_netbios_ns.c
@@ -48,7 +48,7 @@ static int help(struct sk_buff *skb, unsigned int protoff,
 {
        struct nf_conntrack_expect *exp;
        struct iphdr *iph = ip_hdr(skb);
-       struct rtable *rt = skb->rtable;
+       struct rtable *rt = skb_rtable(skb);
        struct in_device *in_dev;
        __be32 mask = 0;
 

diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index fad596b..b6b588b 100644 (file)
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -258,10 +258,10 @@ META_COLLECTOR(int_rtclassid)
 
 META_COLLECTOR(int_rtiif)
 {
-       if (unlikely(skb->rtable == NULL))
+       if (unlikely(skb_rtable(skb) == NULL))
                *err = -1;
        else
-               dst->value = skb->rtable->fl.iif;
+               dst->value = skb_rtable(skb)->fl.iif;
 }
 
 /**************************************************************************

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 8eb3e61..cb2c50d 100644 (file)
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -393,7 +393,7 @@ static int sctp_v4_addr_valid(union sctp_addr *addr,
                return 0;
 
        /* Is this a broadcast address? */
-       if (skb && skb->rtable->rt_flags & RTCF_BROADCAST)
+       if (skb && skb_rtable(skb)->rt_flags & RTCF_BROADCAST)
                return 0;
 
        return 1;
@@ -572,7 +572,7 @@ static void sctp_v4_get_saddr(struct sctp_sock *sk,
 /* What interface did this skb arrive on? */
 static int sctp_v4_skb_iif(const struct sk_buff *skb)
 {
-       return skb->rtable->rt_iif;
+       return skb_rtable(skb)->rt_iif;
 }
 
 /* Was this packet marked by Explicit Congestion Notification? */
@@ -848,8 +848,8 @@ static inline int sctp_v4_xmit(struct sk_buff *skb,
 
        SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, src:%pI4, dst:%pI4\n",
                          __func__, skb, skb->len,
-                         &skb->rtable->rt_src,
-                         &skb->rtable->rt_dst);
+                         &skb_rtable(skb)->rt_src,
+                         &skb_rtable(skb)->rt_dst);
 
        inet->pmtudisc = transport->param_flags & SPP_PMTUD_ENABLE ?
                         IP_PMTUDISC_DO : IP_PMTUDISC_DONT;