#include <linux/proc_fs.h>
#include <linux/seq_file.h>
-int sysctl_tcp_tw_reuse;
-int sysctl_tcp_low_latency;
+int sysctl_tcp_tw_reuse __read_mostly;
+int sysctl_tcp_low_latency __read_mostly;
/* Check TCP sequence numbers in ICMP packets. */
#define ICMP_MIN_LENGTH 8
struct tcp_sock *tp = tcp_sk(sk);
struct sockaddr_in *usin = (struct sockaddr_in *)uaddr;
struct rtable *rt;
- u32 daddr, nexthop;
+ __be32 daddr, nexthop;
int tmp;
int err;
return;
}
if (sk->sk_state == TCP_TIME_WAIT) {
- inet_twsk_put((struct inet_timewait_sock *)sk);
+ inet_twsk_put(inet_twsk(sk));
return;
}
seq = ntohl(th->seq);
if (sk->sk_state != TCP_LISTEN &&
!between(seq, tp->snd_una, tp->snd_nxt)) {
- NET_INC_STATS(LINUX_MIB_OUTOFWINDOWICMPS);
+ NET_INC_STATS_BH(LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
It can f.e. if SYNs crossed.
*/
if (!sock_owned_by_user(sk)) {
- TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
sk->sk_err = err;
sk->sk_error_report(sk);
struct inet_sock *inet = inet_sk(sk);
struct tcphdr *th = skb->h.th;
- if (skb->ip_summed == CHECKSUM_HW) {
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
th->check = ~tcp_v4_check(th, len, inet->saddr, inet->daddr, 0);
skb->csum = offsetof(struct tcphdr, check);
} else {
th->check = 0;
th->check = ~tcp_v4_check(th, skb->len, iph->saddr, iph->daddr, 0);
skb->csum = offsetof(struct tcphdr, check);
- skb->ip_summed = CHECKSUM_HW;
+ skb->ip_summed = CHECKSUM_PARTIAL;
return 0;
}
struct tcphdr *th = skb->h.th;
struct {
struct tcphdr th;
- u32 tsopt[3];
+ u32 tsopt[TCPOLEN_TSTAMP_ALIGNED >> 2];
} rep;
struct ip_reply_arg arg;
struct inet_request_sock *ireq;
struct tcp_options_received tmp_opt;
struct request_sock *req;
- __u32 saddr = skb->nh.iph->saddr;
- __u32 daddr = skb->nh.iph->daddr;
+ __be32 saddr = skb->nh.iph->saddr;
+ __be32 daddr = skb->nh.iph->daddr;
__u32 isn = TCP_SKB_CB(skb)->when;
struct dst_entry *dst = NULL;
#ifdef CONFIG_SYN_COOKIES
tcp_openreq_init(req, &tmp_opt, skb);
+ if (security_inet_conn_request(sk, skb, req))
+ goto drop_and_free;
+
ireq = inet_rsk(req);
ireq->loc_addr = daddr;
ireq->rmt_addr = saddr;
drop_and_free:
reqsk_free(req);
drop:
- TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
return 0;
}
if (req)
return tcp_check_req(sk, skb, req, prev);
- nsk = __inet_lookup_established(&tcp_hashinfo, skb->nh.iph->saddr,
- th->source, skb->nh.iph->daddr,
- ntohs(th->dest), inet_iif(skb));
+ nsk = inet_lookup_established(&tcp_hashinfo, skb->nh.iph->saddr,
+ th->source, skb->nh.iph->daddr,
+ th->dest, inet_iif(skb));
if (nsk) {
if (nsk->sk_state != TCP_TIME_WAIT) {
bh_lock_sock(nsk);
return nsk;
}
- inet_twsk_put((struct inet_timewait_sock *)nsk);
+ inet_twsk_put(inet_twsk(nsk));
return NULL;
}
static int tcp_v4_checksum_init(struct sk_buff *skb)
{
- if (skb->ip_summed == CHECKSUM_HW) {
+ if (skb->ip_summed == CHECKSUM_COMPLETE) {
if (!tcp_v4_check(skb->h.th, skb->len, skb->nh.iph->saddr,
skb->nh.iph->daddr, skb->csum)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
TCP_SKB_CB(skb)->sacked = 0;
sk = __inet_lookup(&tcp_hashinfo, skb->nh.iph->saddr, th->source,
- skb->nh.iph->daddr, ntohs(th->dest),
+ skb->nh.iph->daddr, th->dest,
inet_iif(skb));
if (!sk)
goto discard_and_relse;
nf_reset(skb);
- if (sk_filter(sk, skb, 0))
+ if (sk_filter(sk, skb))
goto discard_and_relse;
skb->dev = NULL;
do_time_wait:
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {
- inet_twsk_put((struct inet_timewait_sock *) sk);
+ inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
if (skb->len < (th->doff << 2) || tcp_checksum_complete(skb)) {
TCP_INC_STATS_BH(TCP_MIB_INERRS);
- inet_twsk_put((struct inet_timewait_sock *) sk);
+ inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
- switch (tcp_timewait_state_process((struct inet_timewait_sock *)sk,
- skb, th)) {
+ switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
case TCP_TW_SYN: {
struct sock *sk2 = inet_lookup_listener(&tcp_hashinfo,
skb->nh.iph->daddr,
- ntohs(th->dest),
+ th->dest,
inet_iif(skb));
if (sk2) {
- inet_twsk_deschedule((struct inet_timewait_sock *)sk,
- &tcp_death_row);
- inet_twsk_put((struct inet_timewait_sock *)sk);
+ inet_twsk_deschedule(inet_twsk(sk), &tcp_death_row);
+ inet_twsk_put(inet_twsk(sk));
sk = sk2;
goto process;
}
static void get_timewait4_sock(struct inet_timewait_sock *tw, char *tmpbuf, int i)
{
- unsigned int dest, src;
+ __be32 dest, src;
__u16 destp, srcp;
int ttd = tw->tw_ttd - jiffies;