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Diffstat (limited to 'net/ipv4/syncookies.c')
-rw-r--r--net/ipv4/syncookies.c28
1 files changed, 12 insertions, 16 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 650cace2180d..26461492a847 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -321,10 +321,10 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
321 * the ACK carries the same options again (see RFC1122 4.2.3.8) 321 * the ACK carries the same options again (see RFC1122 4.2.3.8)
322 */ 322 */
323 if (opt && opt->optlen) { 323 if (opt && opt->optlen) {
324 int opt_size = sizeof(struct ip_options) + opt->optlen; 324 int opt_size = sizeof(struct ip_options_rcu) + opt->optlen;
325 325
326 ireq->opt = kmalloc(opt_size, GFP_ATOMIC); 326 ireq->opt = kmalloc(opt_size, GFP_ATOMIC);
327 if (ireq->opt != NULL && ip_options_echo(ireq->opt, skb)) { 327 if (ireq->opt != NULL && ip_options_echo(&ireq->opt->opt, skb)) {
328 kfree(ireq->opt); 328 kfree(ireq->opt);
329 ireq->opt = NULL; 329 ireq->opt = NULL;
330 } 330 }
@@ -345,20 +345,16 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
345 * no easy way to do this. 345 * no easy way to do this.
346 */ 346 */
347 { 347 {
348 struct flowi fl = { .mark = sk->sk_mark, 348 struct flowi4 fl4;
349 .nl_u = { .ip4_u = 349
350 { .daddr = ((opt && opt->srr) ? 350 flowi4_init_output(&fl4, 0, sk->sk_mark, RT_CONN_FLAGS(sk),
351 opt->faddr : 351 RT_SCOPE_UNIVERSE, IPPROTO_TCP,
352 ireq->rmt_addr), 352 inet_sk_flowi_flags(sk),
353 .saddr = ireq->loc_addr, 353 (opt && opt->srr) ? opt->faddr : ireq->rmt_addr,
354 .tos = RT_CONN_FLAGS(sk) } }, 354 ireq->loc_addr, th->source, th->dest);
355 .proto = IPPROTO_TCP, 355 security_req_classify_flow(req, flowi4_to_flowi(&fl4));
356 .flags = inet_sk_flowi_flags(sk), 356 rt = ip_route_output_key(sock_net(sk), &fl4);
357 .uli_u = { .ports = 357 if (IS_ERR(rt)) {
358 { .sport = th->dest,
359 .dport = th->source } } };
360 security_req_classify_flow(req, &fl);
361 if (ip_route_output_key(sock_net(sk), &rt, &fl)) {
362 reqsk_free(req); 358 reqsk_free(req);
363 goto out; 359 goto out;
364 } 360 }