ipv4: Pass flow key down into ip_append_*().

This way rt->rt_dst accesses are unnecessary.

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

diff --git a/include/net/ip.h b/include/net/ip.h
index a425379..0b30d3a 100644 (file)
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -106,7 +106,7 @@ extern int          __ip_local_out(struct sk_buff *skb);
 extern int             ip_local_out(struct sk_buff *skb);
 extern int             ip_queue_xmit(struct sk_buff *skb, struct flowi *fl);
 extern void            ip_init(void);
-extern int             ip_append_data(struct sock *sk,
+extern int             ip_append_data(struct sock *sk, struct flowi4 *fl4,
                                       int getfrag(void *from, char *to, int offset, int len,
                                                   int odd, struct sk_buff *skb),
                                void *from, int len, int protolen,
@@ -114,7 +114,7 @@ extern int          ip_append_data(struct sock *sk,
                                struct rtable **rt,
                                unsigned int flags);
 extern int             ip_generic_getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb);
-extern ssize_t         ip_append_page(struct sock *sk, struct page *page,
+extern ssize_t         ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
                                int offset, size_t size, int flags);
 extern struct sk_buff  *__ip_make_skb(struct sock *sk,
                                      struct flowi4 *fl4,

diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index be5cc8d..853a670 100644 (file)
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -297,7 +297,7 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param,
        struct sk_buff *skb;
 
        sk = icmp_sk(dev_net((*rt)->dst.dev));
-       if (ip_append_data(sk, icmp_glue_bits, icmp_param,
+       if (ip_append_data(sk, fl4, icmp_glue_bits, icmp_param,
                           icmp_param->data_len+icmp_param->head_len,
                           icmp_param->head_len,
                           ipc, rt, MSG_DONTWAIT) < 0) {

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index dca637b..cd89d22 100644 (file)
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -776,7 +776,9 @@ static inline int ip_ufo_append_data(struct sock *sk,
                                       (length - transhdrlen));
 }
 
-static int __ip_append_data(struct sock *sk, struct sk_buff_head *queue,
+static int __ip_append_data(struct sock *sk,
+                           struct flowi4 *fl4,
+                           struct sk_buff_head *queue,
                            struct inet_cork *cork,
                            int getfrag(void *from, char *to, int offset,
                                        int len, int odd, struct sk_buff *skb),
@@ -808,7 +810,7 @@ static int __ip_append_data(struct sock *sk, struct sk_buff_head *queue,
        maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
 
        if (cork->length + length > 0xFFFF - fragheaderlen) {
-               ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport,
+               ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
                               mtu-exthdrlen);
                return -EMSGSIZE;
        }
@@ -1083,7 +1085,7 @@ static int ip_setup_cork(struct sock *sk, struct inet_cork *cork,
  *
  *     LATER: length must be adjusted by pad at tail, when it is required.
  */
-int ip_append_data(struct sock *sk,
+int ip_append_data(struct sock *sk, struct flowi4 *fl4,
                   int getfrag(void *from, char *to, int offset, int len,
                               int odd, struct sk_buff *skb),
                   void *from, int length, int transhdrlen,
@@ -1104,11 +1106,11 @@ int ip_append_data(struct sock *sk,
                transhdrlen = 0;
        }
 
-       return __ip_append_data(sk, &sk->sk_write_queue, &inet->cork.base, getfrag,
+       return __ip_append_data(sk, fl4, &sk->sk_write_queue, &inet->cork.base, getfrag,
                                from, length, transhdrlen, flags);
 }
 
-ssize_t        ip_append_page(struct sock *sk, struct page *page,
+ssize_t        ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
                       int offset, size_t size, int flags)
 {
        struct inet_sock *inet = inet_sk(sk);
@@ -1146,7 +1148,7 @@ ssize_t   ip_append_page(struct sock *sk, struct page *page,
        maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
 
        if (cork->length + size > 0xFFFF - fragheaderlen) {
-               ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport, mtu);
+               ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, mtu);
                return -EMSGSIZE;
        }
 
@@ -1427,7 +1429,7 @@ struct sk_buff *ip_make_skb(struct sock *sk,
        if (err)
                return ERR_PTR(err);
 
-       err = __ip_append_data(sk, &queue, &cork, getfrag,
+       err = __ip_append_data(sk, fl4, &queue, &cork, getfrag,
                               from, length, transhdrlen, flags);
        if (err) {
                __ip_flush_pending_frames(sk, &queue, &cork);
@@ -1503,7 +1505,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
        sk->sk_priority = skb->priority;
        sk->sk_protocol = ip_hdr(skb)->protocol;
        sk->sk_bound_dev_if = arg->bound_dev_if;
-       ip_append_data(sk, ip_reply_glue_bits, arg->iov->iov_base, len, 0,
+       ip_append_data(sk, &fl4, ip_reply_glue_bits, arg->iov->iov_base, len, 0,
                       &ipc, &rt, MSG_DONTWAIT);
        if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) {
                if (arg->csumoffset >= 0)

diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 6fee91f..11e1780 100644 (file)
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -595,7 +595,7 @@ back_from_confirm:
                if (!ipc.addr)
                        ipc.addr = fl4.daddr;
                lock_sock(sk);
-               err = ip_append_data(sk, ip_generic_getfrag,
+               err = ip_append_data(sk, &fl4, ip_generic_getfrag,
                                     msg->msg_iov, len, 0,
                                     &ipc, &rt, msg->msg_flags);
                if (err)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 006e2cc..66341a3 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -822,6 +822,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
        getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
 
+       fl4 = &inet->cork.fl.u.ip4;
        if (up->pending) {
                /*
                 * There are pending frames.
@@ -920,7 +921,6 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
        if (connected)
                rt = (struct rtable *)sk_dst_check(sk, 0);
 
-       fl4 = &inet->cork.fl.u.ip4;
        if (rt == NULL) {
                struct net *net = sock_net(sk);
 
@@ -989,9 +989,9 @@ back_from_confirm:
 
 do_append_data:
        up->len += ulen;
-       err = ip_append_data(sk, getfrag, msg->msg_iov, ulen,
-                       sizeof(struct udphdr), &ipc, &rt,
-                       corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
+       err = ip_append_data(sk, fl4, getfrag, msg->msg_iov, ulen,
+                            sizeof(struct udphdr), &ipc, &rt,
+                            corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
        if (err)
                udp_flush_pending_frames(sk);
        else if (!corkreq)
@@ -1031,6 +1031,7 @@ EXPORT_SYMBOL(udp_sendmsg);
 int udp_sendpage(struct sock *sk, struct page *page, int offset,
                 size_t size, int flags)
 {
+       struct inet_sock *inet = inet_sk(sk);
        struct udp_sock *up = udp_sk(sk);
        int ret;
 
@@ -1055,7 +1056,8 @@ int udp_sendpage(struct sock *sk, struct page *page, int offset,
                return -EINVAL;
        }
 
-       ret = ip_append_page(sk, page, offset, size, flags);
+       ret = ip_append_page(sk, &inet->cork.fl.u.ip4,
+                            page, offset, size, flags);
        if (ret == -EOPNOTSUPP) {
                release_sock(sk);
                return sock_no_sendpage(sk->sk_socket, page, offset,