ipv4: Kill can_sleep arg to ip_route_output_flow()

This boolean state is now available in the flow flags.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/infiniband/hw/cxgb3/iwch_cm.c

@@ -354,7 +354,7 @@ static struct rtable *find_route(struct t3cdev *dev, __be32 local_ip,
 			  }
 	};
 
-	if (ip_route_output_flow(&init_net, &rt, &fl, NULL, false))
+	if (ip_route_output_flow(&init_net, &rt, &fl, NULL))
 		return NULL;
 	return rt;
 }

drivers/infiniband/hw/cxgb4/cm.c

@@ -331,7 +331,7 @@ static struct rtable *find_route(struct c4iw_dev *dev, __be32 local_ip,
 			  }
 	};
 
-	if (ip_route_output_flow(&init_net, &rt, &fl, NULL, false))
+	if (ip_route_output_flow(&init_net, &rt, &fl, NULL))
 		return NULL;
 	return rt;
 }

drivers/scsi/cxgbi/libcxgbi.c

@@ -470,7 +470,7 @@ static struct rtable *find_route_ipv4(__be32 saddr, __be32 daddr,
 			}
 	};
 
-	if (ip_route_output_flow(&init_net, &rt, &fl, NULL, false))
+	if (ip_route_output_flow(&init_net, &rt, &fl, NULL))
 		return NULL;
 
 	return rt;

include/net/route.h

@@ -120,7 +120,7 @@ extern void		rt_cache_flush(struct net *net, int how);
 extern void		rt_cache_flush_batch(struct net *net);
 extern int		__ip_route_output_key(struct net *, struct rtable **, const struct flowi *flp);
 extern int		ip_route_output_key(struct net *, struct rtable **, struct flowi *flp);
-extern int		ip_route_output_flow(struct net *, struct rtable **rp, struct flowi *flp, struct sock *sk, bool can_sleep);
+extern int		ip_route_output_flow(struct net *, struct rtable **rp, struct flowi *flp, struct sock *sk);
 
 extern int ip_route_input_common(struct sk_buff *skb, __be32 dst, __be32 src,
 				 u8 tos, struct net_device *devin, bool noref);
@@ -198,7 +198,7 @@ static inline int ip_route_connect(struct rtable **rp, __be32 dst,
 		*rp = NULL;
 	}
 	security_sk_classify_flow(sk, &fl);
-	return ip_route_output_flow(net, rp, &fl, sk, can_sleep);
+	return ip_route_output_flow(net, rp, &fl, sk);
 }
 
 static inline int ip_route_newports(struct rtable **rp, u8 protocol,
@@ -222,7 +222,7 @@ static inline int ip_route_newports(struct rtable **rp, u8 protocol,
 		ip_rt_put(*rp);
 		*rp = NULL;
 		security_sk_classify_flow(sk, &fl);
-		return ip_route_output_flow(sock_net(sk), rp, &fl, sk, false);
+		return ip_route_output_flow(sock_net(sk), rp, &fl, sk);
 	}
 	return 0;
 }

net/dccp/ipv4.c

@@ -475,7 +475,7 @@ static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk,
 			  };
 
 	security_skb_classify_flow(skb, &fl);
-	if (ip_route_output_flow(net, &rt, &fl, sk, false)) {
+	if (ip_route_output_flow(net, &rt, &fl, sk)) {
 		IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
 		return NULL;
 	}

net/ipv4/af_inet.c

@@ -1174,7 +1174,7 @@ int inet_sk_rebuild_header(struct sock *sk)
 	};
 
 	security_sk_classify_flow(sk, &fl);
-	err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk, false);
+	err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk);
 }
 	if (!err)
 		sk_setup_caps(sk, &rt->dst);

net/ipv4/inet_connection_sock.c

@@ -369,7 +369,7 @@ struct dst_entry *inet_csk_route_req(struct sock *sk,
 	struct net *net = sock_net(sk);
 
 	security_req_classify_flow(req, &fl);
-	if (ip_route_output_flow(net, &rt, &fl, sk, false))
+	if (ip_route_output_flow(net, &rt, &fl, sk))
 		goto no_route;
 	if (opt && opt->is_strictroute && rt->rt_dst != rt->rt_gateway)
 		goto route_err;

net/ipv4/ip_output.c

@@ -355,7 +355,7 @@ int ip_queue_xmit(struct sk_buff *skb)
 			 * itself out.
 			 */
 			security_sk_classify_flow(sk, &fl);
-			if (ip_route_output_flow(sock_net(sk), &rt, &fl, sk, false))
+			if (ip_route_output_flow(sock_net(sk), &rt, &fl, sk))
 				goto no_route;
 		}
 		sk_setup_caps(sk, &rt->dst);

net/ipv4/raw.c

@@ -564,7 +564,7 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		}
 
 		security_sk_classify_flow(sk, &fl);
-		err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk, true);
+		err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk);
 	}
 	if (err)
 		goto done;

net/ipv4/route.c

@@ -2720,7 +2720,7 @@ static int ipv4_dst_blackhole(struct net *net, struct rtable **rp, struct flowi
 }
 
 int ip_route_output_flow(struct net *net, struct rtable **rp, struct flowi *flp,
-			 struct sock *sk, bool can_sleep)
+			 struct sock *sk)
 {
 	int err;
 
@@ -2733,7 +2733,8 @@ int ip_route_output_flow(struct net *net, struct rtable **rp, struct flowi *flp,
 		if (!flp->fl4_dst)
 			flp->fl4_dst = (*rp)->rt_dst;
 		err = __xfrm_lookup(net, (struct dst_entry **)rp, flp, sk,
-				    can_sleep ? XFRM_LOOKUP_WAIT : 0);
+				    ((flp->flags & FLOWI_FLAG_CAN_SLEEP) ?
+				     XFRM_LOOKUP_WAIT : 0));
 		if (err == -EREMOTE)
 			err = ipv4_dst_blackhole(net, rp, flp);
 
@@ -2746,7 +2747,7 @@ EXPORT_SYMBOL_GPL(ip_route_output_flow);
 
 int ip_route_output_key(struct net *net, struct rtable **rp, struct flowi *flp)
 {
-	return ip_route_output_flow(net, rp, flp, NULL, false);
+	return ip_route_output_flow(net, rp, flp, NULL);
 }
 EXPORT_SYMBOL(ip_route_output_key);
 

net/ipv4/udp.c

@@ -922,7 +922,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		struct net *net = sock_net(sk);
 
 		security_sk_classify_flow(sk, &fl);
-		err = ip_route_output_flow(net, &rt, &fl, sk, true);
+		err = ip_route_output_flow(net, &rt, &fl, sk);
 		if (err) {
 			if (err == -ENETUNREACH)
 				IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);

net/l2tp/l2tp_ip.c

@@ -489,7 +489,7 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m
 			 * itself out.
 			 */
 			security_sk_classify_flow(sk, &fl);
-			if (ip_route_output_flow(sock_net(sk), &rt, &fl, sk, false))
+			if (ip_route_output_flow(sock_net(sk), &rt, &fl, sk))
 				goto no_route;
 		}
 		sk_setup_caps(sk, &rt->dst);