[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>

1 files changed, 11 insertions, 7 deletions

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 9c834fc30112..8cefacb55aad 100644
--- 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;
 }
 
 /**