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Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 4b04c3edd4a9..39b179856082 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -78,8 +78,8 @@
#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
@@ -484,7 +484,7 @@ void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
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 {
@@ -509,7 +509,7 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
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;
}
@@ -798,6 +798,9 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
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;
@@ -948,9 +951,9 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
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) {
@@ -970,7 +973,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
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;
@@ -1087,7 +1090,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
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)
@@ -1101,7 +1104,7 @@ process:
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;
@@ -1165,7 +1168,7 @@ do_time_wait:
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,