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-rw-r--r--net/ipv4/ipip.c6
-rw-r--r--net/ipv4/netfilter/ipt_REJECT.c4
-rw-r--r--net/ipv4/tcp_output.c4
-rw-r--r--net/ipv4/tunnel4.c50
-rw-r--r--net/ipv4/xfrm4_input.c4
-rw-r--r--net/ipv4/xfrm4_mode_tunnel.c1
-rw-r--r--net/ipv4/xfrm4_tunnel.c29
7 files changed, 84 insertions, 14 deletions
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 475bcd1e418..9b561e633b0 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -871,7 +871,7 @@ static int __init ipip_init(void)
printk(banner);
- if (xfrm4_tunnel_register(&ipip_handler)) {
+ if (xfrm4_tunnel_register(&ipip_handler, AF_INET)) {
printk(KERN_INFO "ipip init: can't register tunnel\n");
return -EAGAIN;
}
@@ -893,7 +893,7 @@ static int __init ipip_init(void)
err2:
free_netdev(ipip_fb_tunnel_dev);
err1:
- xfrm4_tunnel_deregister(&ipip_handler);
+ xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
goto out;
}
@@ -913,7 +913,7 @@ static void __exit ipip_destroy_tunnels(void)
static void __exit ipip_fini(void)
{
- if (xfrm4_tunnel_deregister(&ipip_handler))
+ if (xfrm4_tunnel_deregister(&ipip_handler, AF_INET))
printk(KERN_INFO "ipip close: can't deregister tunnel\n");
rtnl_lock();
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index a9eb3635fff..80f739e2182 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -80,6 +80,10 @@ static void send_reset(struct sk_buff *oldskb, int hook)
nskb->mark = 0;
skb_init_secmark(nskb);
+ skb_shinfo(nskb)->gso_size = 0;
+ skb_shinfo(nskb)->gso_segs = 0;
+ skb_shinfo(nskb)->gso_type = 0;
+
tcph = (struct tcphdr *)((u_int32_t*)nskb->nh.iph + nskb->nh.iph->ihl);
/* Swap source and dest */
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index cebe9aa918a..dc151139b5a 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -481,7 +481,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
/* RFC1323: The window in SYN & SYN/ACK segments
* is never scaled.
*/
- th->window = htons(tp->rcv_wnd);
+ th->window = htons(min(tp->rcv_wnd, 65535U));
} else {
th->window = htons(tcp_select_window(sk));
}
@@ -2160,7 +2160,7 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
}
/* RFC1323: The window in SYN & SYN/ACK segments is never scaled. */
- th->window = htons(req->rcv_wnd);
+ th->window = htons(min(req->rcv_wnd, 65535U));
TCP_SKB_CB(skb)->when = tcp_time_stamp;
tcp_syn_build_options((__be32 *)(th + 1), dst_metric(dst, RTAX_ADVMSS), ireq->tstamp_ok,
diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index 8d30c48f090..a794a8ca8b4 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -14,9 +14,10 @@
#include <net/xfrm.h>
static struct xfrm_tunnel *tunnel4_handlers;
+static struct xfrm_tunnel *tunnel64_handlers;
static DEFINE_MUTEX(tunnel4_mutex);
-int xfrm4_tunnel_register(struct xfrm_tunnel *handler)
+int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family)
{
struct xfrm_tunnel **pprev;
int ret = -EEXIST;
@@ -24,7 +25,8 @@ int xfrm4_tunnel_register(struct xfrm_tunnel *handler)
mutex_lock(&tunnel4_mutex);
- for (pprev = &tunnel4_handlers; *pprev; pprev = &(*pprev)->next) {
+ for (pprev = (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
+ *pprev; pprev = &(*pprev)->next) {
if ((*pprev)->priority > priority)
break;
if ((*pprev)->priority == priority)
@@ -44,14 +46,15 @@ err:
EXPORT_SYMBOL(xfrm4_tunnel_register);
-int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler)
+int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family)
{
struct xfrm_tunnel **pprev;
int ret = -ENOENT;
mutex_lock(&tunnel4_mutex);
- for (pprev = &tunnel4_handlers; *pprev; pprev = &(*pprev)->next) {
+ for (pprev = (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
+ *pprev; pprev = &(*pprev)->next) {
if (*pprev == handler) {
*pprev = handler->next;
ret = 0;
@@ -86,6 +89,26 @@ drop:
return 0;
}
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static int tunnel64_rcv(struct sk_buff *skb)
+{
+ struct xfrm_tunnel *handler;
+
+ if (!pskb_may_pull(skb, sizeof(struct iphdr)))
+ goto drop;
+
+ for (handler = tunnel64_handlers; handler; handler = handler->next)
+ if (!handler->handler(skb))
+ return 0;
+
+ icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
+
+drop:
+ kfree_skb(skb);
+ return 0;
+}
+#endif
+
static void tunnel4_err(struct sk_buff *skb, u32 info)
{
struct xfrm_tunnel *handler;
@@ -101,17 +124,36 @@ static struct net_protocol tunnel4_protocol = {
.no_policy = 1,
};
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static struct net_protocol tunnel64_protocol = {
+ .handler = tunnel64_rcv,
+ .err_handler = tunnel4_err,
+ .no_policy = 1,
+};
+#endif
+
static int __init tunnel4_init(void)
{
if (inet_add_protocol(&tunnel4_protocol, IPPROTO_IPIP)) {
printk(KERN_ERR "tunnel4 init: can't add protocol\n");
return -EAGAIN;
}
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ if (inet_add_protocol(&tunnel64_protocol, IPPROTO_IPV6)) {
+ printk(KERN_ERR "tunnel64 init: can't add protocol\n");
+ inet_del_protocol(&tunnel4_protocol, IPPROTO_IPIP);
+ return -EAGAIN;
+ }
+#endif
return 0;
}
static void __exit tunnel4_fini(void)
{
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ if (inet_del_protocol(&tunnel64_protocol, IPPROTO_IPV6))
+ printk(KERN_ERR "tunnel64 close: can't remove protocol\n");
+#endif
if (inet_del_protocol(&tunnel4_protocol, IPPROTO_IPIP))
printk(KERN_ERR "tunnel4 close: can't remove protocol\n");
}
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index 289146bdb8b..78e80deb7e8 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -27,6 +27,7 @@ static int xfrm4_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32
{
switch (nexthdr) {
case IPPROTO_IPIP:
+ case IPPROTO_IPV6:
*spi = skb->nh.iph->saddr;
*seq = 0;
return 0;
@@ -70,7 +71,8 @@ int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type)
if (xfrm_nr == XFRM_MAX_DEPTH)
goto drop;
- x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, spi, iph->protocol, AF_INET);
+ x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, spi,
+ iph->protocol != IPPROTO_IPV6 ? iph->protocol : IPPROTO_IPIP, AF_INET);
if (x == NULL)
goto drop;
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index e54c5494c88..e1cab33fdad 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -95,6 +95,7 @@ static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
switch(iph->protocol){
case IPPROTO_IPIP:
+ break;
#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
case IPPROTO_IPV6:
break;
diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index 1be6762b2d4..3eef06454da 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -64,24 +64,45 @@ static struct xfrm_tunnel xfrm_tunnel_handler = {
.priority = 2,
};
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static struct xfrm_tunnel xfrm64_tunnel_handler = {
+ .handler = xfrm4_rcv,
+ .err_handler = xfrm_tunnel_err,
+ .priority = 2,
+};
+#endif
+
static int __init ipip_init(void)
{
if (xfrm_register_type(&ipip_type, AF_INET) < 0) {
printk(KERN_INFO "ipip init: can't add xfrm type\n");
return -EAGAIN;
}
- if (xfrm4_tunnel_register(&xfrm_tunnel_handler)) {
- printk(KERN_INFO "ipip init: can't add xfrm handler\n");
+
+ if (xfrm4_tunnel_register(&xfrm_tunnel_handler, AF_INET)) {
+ printk(KERN_INFO "ipip init: can't add xfrm handler for AF_INET\n");
+ xfrm_unregister_type(&ipip_type, AF_INET);
+ return -EAGAIN;
+ }
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ if (xfrm4_tunnel_register(&xfrm64_tunnel_handler, AF_INET6)) {
+ printk(KERN_INFO "ipip init: can't add xfrm handler for AF_INET6\n");
+ xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET);
xfrm_unregister_type(&ipip_type, AF_INET);
return -EAGAIN;
}
+#endif
return 0;
}
static void __exit ipip_fini(void)
{
- if (xfrm4_tunnel_deregister(&xfrm_tunnel_handler))
- printk(KERN_INFO "ipip close: can't remove xfrm handler\n");
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ if (xfrm4_tunnel_deregister(&xfrm64_tunnel_handler, AF_INET6))
+ printk(KERN_INFO "ipip close: can't remove xfrm handler for AF_INET6\n");
+#endif
+ if (xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET))
+ printk(KERN_INFO "ipip close: can't remove xfrm handler for AF_INET\n");
if (xfrm_unregister_type(&ipip_type, AF_INET) < 0)
printk(KERN_INFO "ipip close: can't remove xfrm type\n");
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-20 13:54:00 +0000