diff options
Diffstat (limited to 'net/ipv6/syncookies.c')
-rw-r--r-- | net/ipv6/syncookies.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index 5b9af508b8f2..7208a06576c6 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c | |||
@@ -185,6 +185,13 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) | |||
185 | 185 | ||
186 | NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESRECV); | 186 | NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SYNCOOKIESRECV); |
187 | 187 | ||
188 | /* check for timestamp cookie support */ | ||
189 | memset(&tcp_opt, 0, sizeof(tcp_opt)); | ||
190 | tcp_parse_options(skb, &tcp_opt, &hash_location, 0); | ||
191 | |||
192 | if (tcp_opt.saw_tstamp) | ||
193 | cookie_check_timestamp(&tcp_opt); | ||
194 | |||
188 | ret = NULL; | 195 | ret = NULL; |
189 | req = inet6_reqsk_alloc(&tcp6_request_sock_ops); | 196 | req = inet6_reqsk_alloc(&tcp6_request_sock_ops); |
190 | if (!req) | 197 | if (!req) |
@@ -218,6 +225,12 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) | |||
218 | req->expires = 0UL; | 225 | req->expires = 0UL; |
219 | req->retrans = 0; | 226 | req->retrans = 0; |
220 | ireq->ecn_ok = 0; | 227 | ireq->ecn_ok = 0; |
228 | ireq->snd_wscale = tcp_opt.snd_wscale; | ||
229 | ireq->rcv_wscale = tcp_opt.rcv_wscale; | ||
230 | ireq->sack_ok = tcp_opt.sack_ok; | ||
231 | ireq->wscale_ok = tcp_opt.wscale_ok; | ||
232 | ireq->tstamp_ok = tcp_opt.saw_tstamp; | ||
233 | req->ts_recent = tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0; | ||
221 | treq->rcv_isn = ntohl(th->seq) - 1; | 234 | treq->rcv_isn = ntohl(th->seq) - 1; |
222 | treq->snt_isn = cookie; | 235 | treq->snt_isn = cookie; |
223 | 236 | ||
@@ -253,21 +266,6 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) | |||
253 | goto out_free; | 266 | goto out_free; |
254 | } | 267 | } |
255 | 268 | ||
256 | /* check for timestamp cookie support */ | ||
257 | memset(&tcp_opt, 0, sizeof(tcp_opt)); | ||
258 | tcp_parse_options(skb, &tcp_opt, &hash_location, 0, dst); | ||
259 | |||
260 | if (tcp_opt.saw_tstamp) | ||
261 | cookie_check_timestamp(&tcp_opt); | ||
262 | |||
263 | req->ts_recent = tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0; | ||
264 | |||
265 | ireq->snd_wscale = tcp_opt.snd_wscale; | ||
266 | ireq->rcv_wscale = tcp_opt.rcv_wscale; | ||
267 | ireq->sack_ok = tcp_opt.sack_ok; | ||
268 | ireq->wscale_ok = tcp_opt.wscale_ok; | ||
269 | ireq->tstamp_ok = tcp_opt.saw_tstamp; | ||
270 | |||
271 | req->window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW); | 269 | req->window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW); |
272 | tcp_select_initial_window(tcp_full_space(sk), req->mss, | 270 | tcp_select_initial_window(tcp_full_space(sk), req->mss, |
273 | &req->rcv_wnd, &req->window_clamp, | 271 | &req->rcv_wnd, &req->window_clamp, |