ipv4: Make caller provide on-stack flow key to ip_route_output_ports().

Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 22 insertions, 14 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 4e734992e266..7b91fa8bf83c 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1152,6 +1152,7 @@ int inet_sk_rebuild_header(struct sock *sk)
         struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
         __be32 daddr;
         struct ip_options_rcu *inet_opt;
+        struct flowi4 fl4;
         int err;
 
         /* Route is OK, nothing to do. */
@@ -1165,7 +1166,7 @@ int inet_sk_rebuild_header(struct sock *sk)
         if (inet_opt && inet_opt->opt.srr)
                 daddr = inet_opt->opt.faddr;
         rcu_read_unlock();
-        rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
+        rt = ip_route_output_ports(sock_net(sk), &fl4, sk, daddr, inet->inet_saddr,
                                    inet->inet_dport, inet->inet_sport,
                                    sk->sk_protocol, RT_CONN_FLAGS(sk),
                                    sk->sk_bound_dev_if);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 8ae0a5702f56..7c2ef59e3f7d 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -309,6 +309,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
         struct iphdr *pip;
         struct igmpv3_report *pig;
         struct net *net = dev_net(dev);
+        struct flowi4 fl4;
 
         while (1) {
                 skb = alloc_skb(size + LL_ALLOCATED_SPACE(dev),
@@ -321,7 +322,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
         }
         igmp_skb_size(skb) = size;
 
-        rt = ip_route_output_ports(net, NULL, IGMPV3_ALL_MCR, 0,
+        rt = ip_route_output_ports(net, &fl4, NULL, IGMPV3_ALL_MCR, 0,
                                    0, 0,
                                    IPPROTO_IGMP, 0, dev->ifindex);
         if (IS_ERR(rt)) {
@@ -650,6 +651,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
         struct net_device *dev = in_dev->dev;
         struct net *net = dev_net(dev);
         __be32  group = pmc ? pmc->multiaddr : 0;
+        struct flowi4 fl4;
         __be32  dst;
 
         if (type == IGMPV3_HOST_MEMBERSHIP_REPORT)
@@ -659,7 +661,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
         else
                 dst = group;
 
-        rt = ip_route_output_ports(net, NULL, dst, 0,
+        rt = ip_route_output_ports(net, &fl4, NULL, dst, 0,
                                    0, 0,
                                    IPPROTO_IGMP, 0, dev->ifindex);
         if (IS_ERR(rt))
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 362e66f7d2fb..3aa4c31e5448 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -333,6 +333,7 @@ int ip_queue_xmit(struct sk_buff *skb)
         /* Make sure we can route this packet. */
         rt = (struct rtable *)__sk_dst_check(sk, 0);
         if (rt == NULL) {
+                struct flowi4 fl4;
                 __be32 daddr;
 
                 /* Use correct destination address if we have options. */
@@ -344,7 +345,7 @@ int ip_queue_xmit(struct sk_buff *skb)
                  * keep trying until route appears or the connection times
                  * itself out.
                  */
-                rt = ip_route_output_ports(sock_net(sk), sk,
+                rt = ip_route_output_ports(sock_net(sk), &fl4, sk,
                                            daddr, inet->inet_saddr,
                                            inet->inet_dport,
                                            inet->inet_sport,
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index ef16377ec73f..88d96bde9500 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -442,6 +442,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         struct iphdr  *iph;                     /* Our new IP header */
         unsigned int max_headroom;              /* The extra header space needed */
         __be32 dst = tiph->daddr;
+        struct flowi4 fl4;
         int    mtu;
 
         if (skb->protocol != htons(ETH_P_IP))
@@ -460,7 +461,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
                         goto tx_error_icmp;
         }
 
-        rt = ip_route_output_ports(dev_net(dev), NULL,
+        rt = ip_route_output_ports(dev_net(dev), &fl4, NULL,
                                    dst, tiph->saddr,
                                    0, 0,
                                    IPPROTO_IPIP, RT_TOS(tos),
@@ -578,13 +579,15 @@ static void ipip_tunnel_bind_dev(struct net_device *dev)
         iph = &tunnel->parms.iph;
 
         if (iph->daddr) {
-                struct rtable *rt = ip_route_output_ports(dev_net(dev), NULL,
-                                                          iph->daddr, iph->saddr,
-                                                          0, 0,
-                                                          IPPROTO_IPIP,
-                                                          RT_TOS(iph->tos),
-                                                          tunnel->parms.link);
-
+                struct rtable *rt;
+                struct flowi4 fl4;
+
+                rt = ip_route_output_ports(dev_net(dev), &fl4, NULL,
+                                           iph->daddr, iph->saddr,
+                                           0, 0,
+                                           IPPROTO_IPIP,
+                                           RT_TOS(iph->tos),
+                                           tunnel->parms.link);
                 if (!IS_ERR(rt)) {
                         tdev = rt->dst.dev;
                         ip_rt_put(rt);
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 3ad38a449588..86033b7a05ba 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1595,6 +1595,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
         struct vif_device *vif = &mrt->vif_table[vifi];
         struct net_device *dev;
         struct rtable *rt;
+        struct flowi4 fl4;
         int    encap = 0;
 
         if (vif->dev == NULL)
@@ -1612,7 +1613,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
 #endif
 
         if (vif->flags & VIFF_TUNNEL) {
-                rt = ip_route_output_ports(net, NULL,
+                rt = ip_route_output_ports(net, &fl4, NULL,
                                            vif->remote, vif->local,
                                            0, 0,
                                            IPPROTO_IPIP,
@@ -1621,7 +1622,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
                         goto out_free;
                 encap = sizeof(struct iphdr);
         } else {
-                rt = ip_route_output_ports(net, NULL, iph->daddr, 0,
+                rt = ip_route_output_ports(net, &fl4, NULL, iph->daddr, 0,
                                            0, 0,
                                            IPPROTO_IPIP,
                                            RT_TOS(iph->tos), vif->link);