#include <net/timewait_sock.h>
#include <net/xfrm.h>
#include <net/secure_seq.h>
-#include <net/tcp_memcontrol.h>
#include <net/busy_poll.h>
#include <linux/inet.h>
* Incoming packet is checked with md5 hash with finding key,
* no RST generated if md5 hash doesn't match.
*/
- sk1 = __inet_lookup_listener(net,
- &tcp_hashinfo, ip_hdr(skb)->saddr,
+ sk1 = __inet_lookup_listener(net, &tcp_hashinfo, NULL, 0,
+ ip_hdr(skb)->saddr,
th->source, ip_hdr(skb)->daddr,
ntohs(th->source), inet_iif(skb));
/* don't send rst if it can't find key */
outside socket context is ugly, certainly. What can I do?
*/
-static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
+static void tcp_v4_send_ack(struct net *net,
+ struct sk_buff *skb, u32 seq, u32 ack,
u32 win, u32 tsval, u32 tsecr, int oif,
struct tcp_md5sig_key *key,
int reply_flags, u8 tos)
];
} rep;
struct ip_reply_arg arg;
- struct net *net = dev_net(skb_dst(skb)->dev);
memset(&rep.th, 0, sizeof(struct tcphdr));
memset(&arg, 0, sizeof(arg));
struct inet_timewait_sock *tw = inet_twsk(sk);
struct tcp_timewait_sock *tcptw = tcp_twsk(sk);
- tcp_v4_send_ack(skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
+ tcp_v4_send_ack(sock_net(sk), skb,
+ tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
tcptw->tw_rcv_wnd >> tw->tw_rcv_wscale,
tcp_time_stamp + tcptw->tw_ts_offset,
tcptw->tw_ts_recent,
/* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
* sk->sk_state == TCP_SYN_RECV -> for Fast Open.
*/
- tcp_v4_send_ack(skb, (sk->sk_state == TCP_LISTEN) ?
- tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
+ u32 seq = (sk->sk_state == TCP_LISTEN) ? tcp_rsk(req)->snt_isn + 1 :
+ tcp_sk(sk)->snd_nxt;
+
+ tcp_v4_send_ack(sock_net(sk), skb, seq,
tcp_rsk(req)->rcv_nxt, req->rsk_rcv_wnd,
tcp_time_stamp,
req->ts_recent,
kfree(inet_rsk(req)->opt);
}
-
#ifdef CONFIG_TCP_MD5SIG
/*
* RFC2385 MD5 checksumming requires a mapping of
TCP_SKB_CB(skb)->sacked = 0;
lookup:
- sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
+ sk = __inet_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th), th->source,
+ th->dest);
if (!sk)
goto no_tcp_socket;
switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
case TCP_TW_SYN: {
struct sock *sk2 = inet_lookup_listener(dev_net(skb->dev),
- &tcp_hashinfo,
+ &tcp_hashinfo, skb,
+ __tcp_hdrlen(th),
iph->saddr, th->source,
iph->daddr, th->dest,
inet_iif(skb));
net->ipv4.sysctl_tcp_keepalive_probes = TCP_KEEPALIVE_PROBES;
net->ipv4.sysctl_tcp_keepalive_intvl = TCP_KEEPALIVE_INTVL;
+ net->ipv4.sysctl_tcp_syn_retries = TCP_SYN_RETRIES;
+ net->ipv4.sysctl_tcp_synack_retries = TCP_SYNACK_RETRIES;
+ net->ipv4.sysctl_tcp_syncookies = 1;
+ net->ipv4.sysctl_tcp_reordering = TCP_FASTRETRANS_THRESH;
+ net->ipv4.sysctl_tcp_retries1 = TCP_RETR1;
+ net->ipv4.sysctl_tcp_retries2 = TCP_RETR2;
+ net->ipv4.sysctl_tcp_orphan_retries = 0;
+ net->ipv4.sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;
+ net->ipv4.sysctl_tcp_notsent_lowat = UINT_MAX;
+
return 0;
fail:
tcp_sk_exit(net);