vcl: enable gso for 'sendmsg' in LDP mode.

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

diff --git a/src/vcl/ldp.c b/src/vcl/ldp.c
index 73a5bc2..522e85d 100644 (file)
--- a/src/vcl/ldp.c
+++ b/src/vcl/ldp.c
@@ -21,6 +21,7 @@
 #include <stdarg.h>
 #include <sys/resource.h>
 #include <netinet/tcp.h>
+#include <linux/udp.h>
 
 #include <vcl/ldp_socket_wrapper.h>
 #include <vcl/ldp.h>
@@ -1539,13 +1540,19 @@ __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
   return recv (fd, buf, n, flags);
 }
 
-static int
-ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n, int flags,
+static inline int
+ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n,
+              vppcom_endpt_tlv_t *ep_tlv, int flags,
               __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
 {
   vppcom_endpt_t *ep = 0;
   vppcom_endpt_t _ep;
 
+  if (ep_tlv)
+    {
+      _ep.app_data = *ep_tlv;
+    }
+
   if (addr)
     {
       ep = &_ep;
@@ -1614,7 +1621,7 @@ sendto (int fd, const void *buf, size_t n, int flags,
   vlsh = ldp_fd_to_vlsh (fd);
   if (vlsh != VLS_INVALID_HANDLE)
     {
-      size = ldp_vls_sendo (vlsh, buf, n, flags, addr, addr_len);
+      size = ldp_vls_sendo (vlsh, buf, n, NULL, flags, addr, addr_len);
       if (size < 0)
        {
          errno = -size;
@@ -1670,11 +1677,26 @@ sendmsg (int fd, const struct msghdr * msg, int flags)
       struct iovec *iov = msg->msg_iov;
       ssize_t total = 0;
       int i, rv = 0;
+      struct cmsghdr *cmsg;
+      uint16_t *valp;
+      vppcom_endpt_tlv_t _app_data;
+      vppcom_endpt_tlv_t *p_app_data = NULL;
+
+      cmsg = CMSG_FIRSTHDR (msg);
+      if (cmsg && cmsg->cmsg_type == UDP_SEGMENT)
+       {
+         p_app_data = &_app_data;
+         valp = (void *) CMSG_DATA (cmsg);
+         p_app_data->data_type = VCL_UDP_SEGMENT;
+         p_app_data->data_len = sizeof (*valp);
+         p_app_data->value = *valp;
+       }
 
       for (i = 0; i < msg->msg_iovlen; ++i)
        {
-         rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
-                             msg->msg_name, msg->msg_namelen);
+         rv =
+           ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, p_app_data,
+                          flags, msg->msg_name, msg->msg_namelen);
          if (rv < 0)
            break;
          else