ldp: return byte count from a successful recvfrom

[vpp.git] / src / vcl / ldp.c

diff --git a/src/vcl/ldp.c b/src/vcl/ldp.c
index f3ac310..e0fb935 100644 (file)
--- a/src/vcl/ldp.c
+++ b/src/vcl/ldp.c
@@ -1478,7 +1478,7 @@ recvfrom (int fd, void *__restrict buf, size_t n, int flags,
          __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
 {
   vls_handle_t sid;
-  ssize_t size;
+  ssize_t size, rv;
 
   if ((errno = -ldp_init ()))
     return -1;
@@ -1495,7 +1495,11 @@ recvfrom (int fd, void *__restrict buf, size_t n, int flags,
          size = vls_recvfrom (sid, buf, n, flags, &ep);
 
          if (size > 0)
-           size = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
+           {
+             rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
+             if (rv < 0)
+               size = rv;
+           }
        }
       else
        size = vls_recvfrom (sid, buf, n, flags, NULL);