pg: udp length & checsum issue
if udp length is specified, then use this length to calculate udp checksum
otherwise, use length from vlib_buffer
@@ -68,12 +68,12 @@ udp_pg_edit_function_inline (pg_main_t * pg,
ip0 = (void *) (p0->data + ip_offset);
udp0 = (void *) (p0->data + udp_offset);
- udp_len0 = clib_net_to_host_u16 (ip0->length) - sizeof (ip0[0]);
+ udp_len0 = vlib_buffer_length_in_chain (vm, p0) - udp_offset;
if (flags & UDP_PG_EDIT_LENGTH)
- udp0->length =
- clib_net_to_host_u16 (vlib_buffer_length_in_chain (vm, p0)
- - ip_offset);
+ udp0->length = clib_host_to_net_u16 (udp_len0);
+ else
+ udp_len0 = clib_host_to_net_u16 (udp0->length);
/* Initialize checksum with header. */
if (flags & UDP_PG_EDIT_CHECKSUM)
