Timestamp are used to store additional syncookie parameters such as sack, ecn, and wscale. The wscale value we need to encode is the client's wscale, since we can't recover that later in the session. Next overwrite the wscale option so the later synproxy_send_client_synack will send the backend's wscale to the client. Signed-off-by: Martin Topholm <mph@xxxxxxx> Reviewed-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> --- net/netfilter/nf_synproxy_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/net/netfilter/nf_synproxy_core.c b/net/netfilter/nf_synproxy_core.c index cdf4567..9858e3e 100644 --- a/net/netfilter/nf_synproxy_core.c +++ b/net/netfilter/nf_synproxy_core.c @@ -151,9 +151,10 @@ void synproxy_init_timestamp_cookie(const struct xt_synproxy_info *info, opts->tsecr = opts->tsval; opts->tsval = tcp_time_stamp & ~0x3f; - if (opts->options & XT_SYNPROXY_OPT_WSCALE) - opts->tsval |= info->wscale; - else + if (opts->options & XT_SYNPROXY_OPT_WSCALE) { + opts->tsval |= opts->wscale; + opts->wscale = info->wscale; + } else opts->tsval |= 0xf; if (opts->options & XT_SYNPROXY_OPT_SACK_PERM) -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html