[TIPC]: Stream socket send indicates partial success if data partially sent.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 9c834fc30112c148ca02348d113e2015a3a48dd8..8cefacb55aade9c8f376e08c90bd8715b9c54fcc 100644 (file)
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -601,7 +601,8 @@ exit:
  * 
  * Used for SOCK_STREAM data.
  * 
- * Returns the number of bytes sent on success, or errno otherwise
+ * Returns the number of bytes sent on success (or partial success), 
+ * or errno if no data sent
  */
 
 
@@ -615,6 +616,7 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
        char __user *curr_start;
        int curr_left;
        int bytes_to_send;
+       int bytes_sent;
        int res;
        
        if (likely(total_len <= TIPC_MAX_USER_MSG_SIZE))
@@ -637,11 +639,11 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
         * of small iovec entries into send_packet().
         */
 
-       my_msg = *m;
-       curr_iov = my_msg.msg_iov;
-       curr_iovlen = my_msg.msg_iovlen;
+       curr_iov = m->msg_iov;
+       curr_iovlen = m->msg_iovlen;
        my_msg.msg_iov = &my_iov;
        my_msg.msg_iovlen = 1;
+       bytes_sent = 0;
 
        while (curr_iovlen--) {
                curr_start = curr_iov->iov_base;
@@ -652,16 +654,18 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
                                ? curr_left : TIPC_MAX_USER_MSG_SIZE;
                        my_iov.iov_base = curr_start;
                        my_iov.iov_len = bytes_to_send;
-                        if ((res = send_packet(iocb, sock, &my_msg, 0)) < 0)
-                                return res;
+                        if ((res = send_packet(iocb, sock, &my_msg, 0)) < 0) {
+                               return bytes_sent ? bytes_sent : res;
+                       }
                        curr_left -= bytes_to_send;
                        curr_start += bytes_to_send;
+                       bytes_sent += bytes_to_send;
                }
 
                curr_iov++;
        }
 
-       return total_len;
+       return bytes_sent;
 }
 
 /**