diff options
Diffstat (limited to 'src/vnet/tcp/tcp_output.c')
| -rw-r--r-- | src/vnet/tcp/tcp_output.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c index 7cee34995e3..113fb148c37 100644 --- a/src/vnet/tcp/tcp_output.c +++ b/src/vnet/tcp/tcp_output.c @@ -126,7 +126,10 @@ tcp_initial_window_to_advertise (tcp_connection_t * tc) * scale to be computed in the same way */ max_fifo = tm->max_rx_fifo ? tm->max_rx_fifo : TCP_MAX_RX_FIFO_SIZE; - tc->rcv_wscale = tcp_window_compute_scale (max_fifo); + /* Compute rcv wscale only if peer advertised support for it */ + if (tc->state != TCP_STATE_SYN_RCVD || tcp_opts_wscale (&tc->rcv_opts)) + tc->rcv_wscale = tcp_window_compute_scale (max_fifo); + tc->rcv_wnd = tcp_initial_wnd_unscaled (tc); return clib_min (tc->rcv_wnd, TCP_WND_MAX); |