diff options
Diffstat (limited to 'src/vnet/tcp/tcp_input.c')
| -rwxr-xr-x | src/vnet/tcp/tcp_input.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c index 0b1ac73209b..45a40a276b0 100755 --- a/src/vnet/tcp/tcp_input.c +++ b/src/vnet/tcp/tcp_input.c @@ -365,6 +365,13 @@ tcp_segment_validate (tcp_worker_ctx_t * wrk, tcp_connection_t * tc0, *error0 = TCP_ERROR_RCV_WND; + /* If we advertised a zero rcv_wnd and the segment is in the past or the + * next one that we expect, it is probably a window probe */ + if ((tc0->flags & TCP_CONN_ZERO_RWND_SENT) + && seq_lt (vnet_buffer (b0)->tcp.seq_end, + tc0->rcv_las + tc0->rcv_opts.mss)) + *error0 = TCP_ERROR_ZERO_RWND; + tc0->errors.below_data_wnd += seq_lt (vnet_buffer (b0)->tcp.seq_end, tc0->rcv_las); |