*/
#define MAX_TCP_WINDOW 32767U
+/* Offer an initial receive window of 10 mss. */
+#define TCP_DEFAULT_INIT_RCVWND 10
+
/* Minimal accepted MSS. It is (60+60+8) - (20+20). */
#define TCP_MIN_MSS 88U
#define TCP_SYNACK_RETRIES 5 /* number of times to retry passive opening a
* connection: ~180sec is RFC minimum */
-
-#define TCP_ORPHAN_RETRIES 7 /* number of times to retry on an orphaned
- * socket. 7 is ~50sec-16min.
- */
-
-
#define TCP_TIMEWAIT_LEN (60*HZ) /* how long to wait to destroy TIME-WAIT
* state, about 60 seconds */
#define TCP_FIN_TIMEOUT TCP_TIMEWAIT_LEN
extern int tcp_v4_rcv(struct sk_buff *skb);
-extern int tcp_v4_remember_stamp(struct sock *sk);
+extern struct inet_peer *tcp_v4_get_peer(struct sock *sk, bool *release_it);
+extern void *tcp_v4_tw_get_peer(struct sock *sk);
extern int tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw);
extern int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
size_t size);
return 1;
if (unlikely(get_seconds() >= rx_opt->ts_recent_stamp + TCP_PAWS_24DAYS))
return 1;
-
+ /*
+ * Some OSes send SYN and SYNACK messages with tsval=0 tsecr=0,
+ * then following tcp messages have valid values. Ignore 0 value,
+ * or else 'negative' tsval might forbid us to accept their packets.
+ */
+ if (!rx_opt->ts_recent)
+ return 1;
return 0;
}
union tcp_md5sum_block md5_blk;
};
-#define TCP_MD5SIG_MAXKEYS (~(u32)0) /* really?! */
-
/* - functions */
extern int tcp_v4_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
struct sock *sk, struct request_sock *req,