net/udp: fix build error when NET_UDP_WRITE_BUFFERS disable

fix build error.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>

Author: zhhyu7

net/procfs/net_udp.c

@@ -95,13 +95,13 @@ static ssize_t netprocfs_udpstats(FAR struct netprocfs_file_s *priv,
       len += snprintf(buffer + len, buflen - len,
                       "    %2" PRIu8
                       ": %3" PRIx8
-#if CONFIG_NET_SEND_BUFSIZE > 0
+#ifdef CONFIG_NET_UDP_WRITE_BUFFERS
                       " %6" PRIu32
 #endif
                       " %6u",
                       priv->offset++,
                       conn->sconn.s_flags,
-#if CONFIG_NET_SEND_BUFSIZE > 0
+#ifdef CONFIG_NET_UDP_WRITE_BUFFERS
                       udp_wrbuffer_inqueue_size(conn),
 #endif
                       (conn->readahead) ? conn->readahead->io_pktlen : 0);

net/udp/udp.h

@@ -579,9 +579,7 @@ void udp_wrbuffer_release(FAR struct udp_wrbuffer_s *wrb);
  *
  ****************************************************************************/
 
-#if CONFIG_NET_SEND_BUFSIZE > 0
 uint32_t udp_wrbuffer_inqueue_size(FAR struct udp_conn_s *conn);
-#endif /* CONFIG_NET_SEND_BUFSIZE */
 
 /****************************************************************************
  * Name: udp_wrbuffer_test

net/udp/udp_ioctl.c

@@ -67,25 +67,29 @@ static void udp_path(FAR struct udp_conn_s *conn, FAR char *buf, size_t len)
 
   snprintf(buf, len, "udp:["
            "%s:%" PRIu16 "<->%s:%" PRIu16
-#if CONFIG_NET_SEND_BUFSIZE > 0
            ", tx %" PRIu32 "/%" PRId32
-#endif
-#if CONFIG_NET_RECV_BUFSIZE > 0
            ", rx %u/%" PRId32
-#endif
            ", flg %" PRIx8
            "]",
            inet_ntop(domain, laddr, local, sizeof(local)),
            ntohs(conn->lport),
            inet_ntop(domain, raddr, remote, sizeof(remote)),
            ntohs(conn->rport),
-#if CONFIG_NET_SEND_BUFSIZE > 0
+#ifdef CONFIG_NET_UDP_WRITE_BUFFERS
            udp_wrbuffer_inqueue_size(conn),
+#else
+           (uint32_t)0,
+#endif
+#if CONFIG_NET_SEND_BUFSIZE > 0
            conn->sndbufs,
+#else
+           (int32_t)0,
 #endif
-#if CONFIG_NET_RECV_BUFSIZE > 0
            (conn->readahead) ? conn->readahead->io_pktlen : 0,
+#if CONFIG_NET_RECV_BUFSIZE > 0
            conn->rcvbufs,
+#else
+           (int32_t)0,
 #endif
            conn->sconn.s_flags
            );

net/udp/udp_wrbuffer.c

@@ -262,7 +262,6 @@ void udp_wrbuffer_release(FAR struct udp_wrbuffer_s *wrb)
  *
  ****************************************************************************/
 
-#if CONFIG_NET_SEND_BUFSIZE > 0
 uint32_t udp_wrbuffer_inqueue_size(FAR struct udp_conn_s *conn)
 {
   FAR struct udp_wrbuffer_s *wrb;
@@ -280,7 +279,6 @@ uint32_t udp_wrbuffer_inqueue_size(FAR struct udp_conn_s *conn)
 
   return total;
 }
-#endif /* CONFIG_NET_SEND_BUFSIZE */
 
 /****************************************************************************
  * Name: udp_wrbuffer_test