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

Signed-off-by: David S. Miller <[e-mail]>

drivers/infiniband/hw/cxgb3/iwch_cm.c

···
 				 __be16 peer_port, u8 tos)
 {
 	struct rtable *rt;
+	struct flowi4 fl4;
 
-	rt = ip_route_output_ports(&init_net, NULL, peer_ip, local_ip,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
 				   peer_port, local_port, IPPROTO_TCP,
 				   tos, 0);
 	if (IS_ERR(rt))

drivers/infiniband/hw/cxgb4/cm.c

···
 				 __be16 peer_port, u8 tos)
 {
 	struct rtable *rt;
+	struct flowi4 fl4;
 
-	rt = ip_route_output_ports(&init_net, NULL, peer_ip, local_ip,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
 				   peer_port, local_port, IPPROTO_TCP,
 				   tos, 0);
 	if (IS_ERR(rt))

drivers/net/pptp.c

···
 	struct pptp_opt *opt = &po->proto.pptp;
 	struct pptp_gre_header *hdr;
 	unsigned int header_len = sizeof(*hdr);
+	struct flowi4 fl4;
 	int islcp;
 	int len;
 	unsigned char *data;
···
 	if (sk_pppox(po)->sk_state & PPPOX_DEAD)
 		goto tx_error;
 
-	rt = ip_route_output_ports(&init_net, NULL,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL,
 				   opt->dst_addr.sin_addr.s_addr,
 				   opt->src_addr.sin_addr.s_addr,
 				   0, 0, IPPROTO_GRE,
···
 	struct pppox_sock *po = pppox_sk(sk);
 	struct pptp_opt *opt = &po->proto.pptp;
 	struct rtable *rt;
+	struct flowi4 fl4;
 	int error = 0;
 
 	if (sp->sa_protocol != PX_PROTO_PPTP)
···
 	po->chan.private = sk;
 	po->chan.ops = &pptp_chan_ops;
 
-	rt = ip_route_output_ports(&init_net, sk,
+	rt = ip_route_output_ports(&init_net, &fl4, sk,
 				   opt->dst_addr.sin_addr.s_addr,
 				   opt->src_addr.sin_addr.s_addr,
 				   0, 0,

drivers/scsi/cxgbi/libcxgbi.c

···
 				      __be16 sport, __be16 dport, u8 tos)
 {
 	struct rtable *rt;
+	struct flowi4 fl4;
 
-	rt = ip_route_output_ports(&init_net, NULL, daddr, saddr,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL, daddr, saddr,
 				   dport, sport, IPPROTO_TCP, tos, 0);
 	if (IS_ERR(rt))
 		return NULL;

include/net/route.h

···
 	return ip_route_output_key(net, &fl4);
 }
 
-static inline struct rtable *ip_route_output_ports(struct net *net, struct sock *sk,
+static inline struct rtable *ip_route_output_ports(struct net *net, struct flowi4 *fl4,
+						   struct sock *sk,
 						   __be32 daddr, __be32 saddr,
 						   __be16 dport, __be16 sport,
 						   __u8 proto, __u8 tos, int oif)
 {
-	struct flowi4 fl4;
-
-	flowi4_init_output(&fl4, oif, sk ? sk->sk_mark : 0, tos,
+	flowi4_init_output(fl4, oif, sk ? sk->sk_mark : 0, tos,
 			   RT_SCOPE_UNIVERSE, proto,
 			   sk ? inet_sk_flowi_flags(sk) : 0,
 			   daddr, saddr, dport, sport);
 	if (sk)
-		security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
-	return ip_route_output_flow(net, &fl4, sk);
+		security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
+	return ip_route_output_flow(net, fl4, sk);
 }
 
 static inline struct rtable *ip_route_output_gre(struct net *net,

net/ipv4/af_inet.c

···
 	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. */
···
 	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);

net/ipv4/igmp.c

···
 	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),
···
 	}
 	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)) {
···
 	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)
···
 	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))

net/ipv4/ip_output.c

···
 	/* 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. */
···
 		 * 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,

net/ipv4/ipip.c

···
 	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))
···
 			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),
···
 	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);

net/ipv4/ipmr.c

···
 	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)
···
 #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,
···
 			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);

net/ipv6/ip6_tunnel.c

···
 	struct sk_buff *skb2;
 	const struct iphdr *eiph;
 	struct rtable *rt;
+	struct flowi4 fl4;
 
 	err = ip6_tnl_err(skb, IPPROTO_IPIP, opt, &rel_type, &rel_code,
 			  &rel_msg, &rel_info, offset);
···
 	eiph = ip_hdr(skb2);
 
 	/* Try to guess incoming interface */
-	rt = ip_route_output_ports(dev_net(skb->dev), NULL,
+	rt = ip_route_output_ports(dev_net(skb->dev), &fl4, NULL,
 				   eiph->saddr, 0,
 				   0, 0,
 				   IPPROTO_IPIP, RT_TOS(eiph->tos), 0);
···
 	if (rt->rt_flags & RTCF_LOCAL) {
 		ip_rt_put(rt);
 		rt = NULL;
-		rt = ip_route_output_ports(dev_net(skb->dev), NULL,
+		rt = ip_route_output_ports(dev_net(skb->dev), &fl4, NULL,
 					   eiph->daddr, eiph->saddr,
 					   0, 0,
 					   IPPROTO_IPIP,

net/ipv6/sit.c

···
 	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;
 	const struct in6_addr *addr6;
 	int addr_type;
···
 		dst = addr6->s6_addr32[3];
 	}
 
-	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_IPV6, RT_TOS(tos),
···
 	struct net_device *tdev = NULL;
 	struct ip_tunnel *tunnel;
 	const struct iphdr *iph;
+	struct flowi4 fl4;
 
 	tunnel = netdev_priv(dev);
 	iph = &tunnel->parms.iph;
 
 	if (iph->daddr) {
-		struct rtable *rt = ip_route_output_ports(dev_net(dev), NULL,
+		struct rtable *rt = ip_route_output_ports(dev_net(dev), &fl4, NULL,
 							  iph->daddr, iph->saddr,
 							  0, 0,
 							  IPPROTO_IPV6,

net/l2tp/l2tp_ip.c

···
 
 	if (rt == NULL) {
 		struct ip_options_rcu *inet_opt;
+		struct flowi4 fl4;
 
 		rcu_read_lock();
 		inet_opt = rcu_dereference(inet->inet_opt);
···
 		 * 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,
 					   sk->sk_protocol, RT_CONN_FLAGS(sk),

net/rxrpc/ar-peer.c

···
 static void rxrpc_assess_MTU_size(struct rxrpc_peer *peer)
 {
 	struct rtable *rt;
+	struct flowi4 fl4;
 
 	peer->if_mtu = 1500;
 
-	rt = ip_route_output_ports(&init_net, NULL,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL,
 				   peer->srx.transport.sin.sin_addr.s_addr, 0,
 				   htons(7000), htons(7001),
 				   IPPROTO_UDP, 0, 0);