diff options
Diffstat (limited to 'src/vnet/tcp/tcp_pg.c')
| -rw-r--r-- | src/vnet/tcp/tcp_pg.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/vnet/tcp/tcp_pg.c b/src/vnet/tcp/tcp_pg.c index 3be4592c679..45eaed97b9b 100644 --- a/src/vnet/tcp/tcp_pg.c +++ b/src/vnet/tcp/tcp_pg.c @@ -77,7 +77,11 @@ tcp_pg_edit_function (pg_main_t * pg, ASSERT (p0->current_data == 0); ip0 = (void *) (p0->data + ip_offset); tcp0 = (void *) (p0->data + tcp_offset); - tcp_len0 = clib_net_to_host_u16 (ip0->length) - sizeof (ip0[0]); + /* if IP length has been specified, then calculate the length based on buffer */ + if (ip0->length == 0) + tcp_len0 = vlib_buffer_length_in_chain (vm, p0) - tcp_offset; + else + tcp_len0 = clib_net_to_host_u16 (ip0->length) - tcp_offset; /* Initialize checksum with header. */ if (BITS (sum0) == 32) |