[PATCH 04/12] switch tcp_sock->ucopy from iovec (ucopy.iov) to msghdr (ucopy.msg)

[Al Viro]

From: Al Viro <v...@zeniv.linux.org.uk>

Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
---
 include/linux/tcp.h  | 2 +-
 net/ipv4/tcp.c       | 2 +-
 net/ipv4/tcp_input.c | 7 +++----
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index f566b85..5d9cc9c 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -162,7 +162,7 @@ struct tcp_sock {
        struct {
                struct sk_buff_head     prequeue;
                struct task_struct      *task;
-               struct iovec            *iov;
+               struct msghdr           *msg;
                int                     memory;
                int                     len;
        } ucopy;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index dc13a36..4a96f37 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1729,7 +1729,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, 
struct msghdr *msg,
                        if (!user_recv && !(flags & (MSG_TRUNC | MSG_PEEK))) {
                                user_recv = current;
                                tp->ucopy.task = user_recv;
-                               tp->ucopy.iov = msg->msg_iov;
+                               tp->ucopy.msg = msg;
                        }
 
                        tp->ucopy.len = len;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 69de1a1..075ab4d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4421,7 +4421,7 @@ static void tcp_data_queue(struct sock *sk, struct 
sk_buff *skb)
                        __set_current_state(TASK_RUNNING);
 
                        local_bh_enable();
-                       if (!skb_copy_datagram_iovec(skb, 0, tp->ucopy.iov, 
chunk)) {
+                       if (!skb_copy_datagram_msg(skb, 0, tp->ucopy.msg, 
chunk)) {
                                tp->ucopy.len -= chunk;
                                tp->copied_seq += chunk;
                                eaten = (chunk == skb->len);
@@ -4941,10 +4941,9 @@ static int tcp_copy_to_iovec(struct sock *sk, struct 
sk_buff *skb, int hlen)
 
        local_bh_enable();
        if (skb_csum_unnecessary(skb))
-               err = skb_copy_datagram_iovec(skb, hlen, tp->ucopy.iov, chunk);
+               err = skb_copy_datagram_msg(skb, hlen, tp->ucopy.msg, chunk);
        else
-               err = skb_copy_and_csum_datagram_iovec(skb, hlen,
-                                                      tp->ucopy.iov);
+               err = skb_copy_and_csum_datagram_msg(skb, hlen, tp->ucopy.msg);
 
        if (!err) {
                tp->ucopy.len -= chunk;
-- 
2.1.3

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