gso: fix the number of buffers required for segmentation

Ticket: VPPSUPP-51 Type: fix Change-Id: I34d4237eb0644705ce0f523fdd0d6b70308e8bcd Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-12-24 23:00:49 +01:00 · 2019-12-24 23:00:49 +01:00 · a82f590c03
commit a82f590c03
parent 775d5b1e22
1 changed files with 2 additions and 1 deletions
--- a/src/vnet/interface_output.c
+++ b/src/vnet/interface_output.c
@ -237,7 +237,8 @@ tso_alloc_tx_bufs (vlib_main_t * vm,
 		   u16 gso_size)
 {
  u16 size =
-    clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz);
+    clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz
+	      - b0->current_data);

  /* rounded-up division */
  u16 n_bufs = (n_bytes_b0 - l234_sz + (size - 1)) / size;