udp session: jumbo frames and configurable mtu

[vpp.git] / src / vnet / udp / udp_input.c

diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index 4b22cbe..1e1c60b 100644 (file)
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -208,6 +208,7 @@ udp46_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
              child0->c_rmt_port = udp0->src_port;
              child0->c_is_ip4 = is_ip4;
              child0->c_fib_index = tc0->fib_index;
+             child0->mss = uc0->mss;
              child0->flags |= UDP_CONN_F_CONNECTED;
 
              if (session_stream_accept (&child0->connection,
@@ -238,7 +239,14 @@ udp46_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
          error0 = UDP_ERROR_FIFO_FULL;
          goto trace0;
        }
-      hdr0.data_length = b0->current_length = data_len;
+
+      hdr0.data_length = data_len;
+      if (PREDICT_TRUE (!(b0->flags & VLIB_BUFFER_NEXT_PRESENT)))
+       b0->current_length = data_len;
+      else
+       b0->total_length_not_including_first_buffer = data_len
+         - b0->current_length;
+
       hdr0.data_offset = 0;
       ip_set (&hdr0.lcl_ip, lcl_addr, is_ip4);
       ip_set (&hdr0.rmt_ip, rmt_addr, is_ip4);