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-rw-r--r--drivers/net/pptp.c2
-rw-r--r--include/net/dst.h6
-rw-r--r--include/net/ip.h10
-rw-r--r--include/net/route.h11
-rw-r--r--net/ipv4/devinet.c6
-rw-r--r--net/ipv4/ip_gre.c2
-rw-r--r--net/ipv4/ip_output.c3
-rw-r--r--net/ipv4/netfilter/ipt_REJECT.c2
-rw-r--r--net/ipv4/route.c2
-rw-r--r--net/ipv4/sysctl_net_ipv4.c2
-rw-r--r--net/ipv4/xfrm4_mode_tunnel.c2
11 files changed, 21 insertions, 27 deletions
diff --git a/drivers/net/pptp.c b/drivers/net/pptp.c
index c83e168eef21..164cfad6ce79 100644
--- a/drivers/net/pptp.c
+++ b/drivers/net/pptp.c
@@ -277,7 +277,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
iph->tos = 0;
iph->daddr = rt->rt_dst;
iph->saddr = rt->rt_src;
- iph->ttl = dst_metric_hoplimit(&rt->dst);
+ iph->ttl = ip4_dst_hoplimit(&rt->dst);
iph->tot_len = htons(skb->len);
skb_dst_drop(skb);
diff --git a/include/net/dst.h b/include/net/dst.h
index 9208b500aaaf..755ac6c1aa03 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -116,12 +116,6 @@ dst_metric(const struct dst_entry *dst, const int metric)
return dst_metric_raw(dst, metric);
}
-static inline u32
-dst_metric_hoplimit(const struct dst_entry *dst)
-{
- return dst_metric_raw(dst, RTAX_HOPLIMIT);
-}
-
static inline void dst_metric_set(struct dst_entry *dst, int metric, u32 val)
{
dst->_metrics[metric-1] = val;
diff --git a/include/net/ip.h b/include/net/ip.h
index 86e2b182a0c0..67fac78a186b 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -201,7 +201,6 @@ static inline int inet_is_reserved_local_port(int port)
return test_bit(port, sysctl_local_reserved_ports);
}
-extern int sysctl_ip_default_ttl;
extern int sysctl_ip_nonlocal_bind;
extern struct ctl_path net_core_path[];
@@ -428,15 +427,6 @@ extern void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
extern void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 dport,
u32 info);
-/* sysctl helpers - any sysctl which holds a value that ends up being
- * fed into the routing cache should use these handlers.
- */
-int ipv4_doint_and_flush(ctl_table *ctl, int write,
- void __user *buffer,
- size_t *lenp, loff_t *ppos);
-int ipv4_doint_and_flush_strategy(ctl_table *table,
- void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen);
#ifdef CONFIG_PROC_FS
extern int ip_misc_proc_init(void);
#endif
diff --git a/include/net/route.h b/include/net/route.h
index b8c1f7703fc6..27002362944a 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -231,4 +231,15 @@ static inline int inet_iif(const struct sk_buff *skb)
return skb_rtable(skb)->rt_iif;
}
+extern int sysctl_ip_default_ttl;
+
+static inline int ip4_dst_hoplimit(const struct dst_entry *dst)
+{
+ int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);
+
+ if (hoplimit == 0)
+ hoplimit = sysctl_ip_default_ttl;
+ return hoplimit;
+}
+
#endif /* _ROUTE_H */
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 3b067704ab38..748cb5b337bd 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1430,9 +1430,9 @@ static int devinet_sysctl_forward(ctl_table *ctl, int write,
return ret;
}
-int ipv4_doint_and_flush(ctl_table *ctl, int write,
- void __user *buffer,
- size_t *lenp, loff_t *ppos)
+static int ipv4_doint_and_flush(ctl_table *ctl, int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 46eb3dc37ec6..eb68a0e34e49 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -890,7 +890,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
iph->ttl = ((struct ipv6hdr *)old_iph)->hop_limit;
#endif
else
- iph->ttl = dst_metric_hoplimit(&rt->dst);
+ iph->ttl = ip4_dst_hoplimit(&rt->dst);
}
((__be16 *)(iph + 1))[0] = tunnel->parms.o_flags;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ea28fa5f1992..04c7b3ba6b39 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -82,6 +82,7 @@
#include <linux/tcp.h>
int sysctl_ip_default_ttl __read_mostly = IPDEFTTL;
+EXPORT_SYMBOL(sysctl_ip_default_ttl);
/* Generate a checksum for an outgoing IP datagram. */
__inline__ void ip_send_check(struct iphdr *iph)
@@ -130,7 +131,7 @@ static inline int ip_select_ttl(struct inet_sock *inet, struct dst_entry *dst)
int ttl = inet->uc_ttl;
if (ttl < 0)
- ttl = dst_metric_hoplimit(dst);
+ ttl = ip4_dst_hoplimit(dst);
return ttl;
}
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index f1309072c541..1ff79e557f96 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -116,7 +116,7 @@ static void send_reset(struct sk_buff *oldskb, int hook)
if (ip_route_me_harder(nskb, addr_type))
goto free_nskb;
- niph->ttl = dst_metric_hoplimit(skb_dst(nskb));
+ niph->ttl = ip4_dst_hoplimit(skb_dst(nskb));
/* "Never happens" */
if (nskb->len > dst_mtu(skb_dst(nskb)))
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 90b5a37555ab..770f70427f0b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1821,8 +1821,6 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
} else
dst_metric_set(dst, RTAX_MTU, dst->dev->mtu);
- if (dst_metric_raw(dst, RTAX_HOPLIMIT) == 0)
- dst_metric_set(dst, RTAX_HOPLIMIT, sysctl_ip_default_ttl);
if (dst_mtu(dst) > IP_MAX_MTU)
dst_metric_set(dst, RTAX_MTU, IP_MAX_MTU);
if (dst_metric(dst, RTAX_ADVMSS) == 0)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 1b4ec21497a4..e85ff5930607 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -155,7 +155,7 @@ static struct ctl_table ipv4_table[] = {
.data = &sysctl_ip_default_ttl,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = ipv4_doint_and_flush,
+ .proc_handler = proc_dointvec,
.extra2 = &init_net,
},
{
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 63b854e74d99..534972e114ac 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -56,7 +56,7 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));
ip_select_ident(top_iph, dst->child, NULL);
- top_iph->ttl = dst_metric_hoplimit(dst->child);
+ top_iph->ttl = ip4_dst_hoplimit(dst->child);
top_iph->saddr = x->props.saddr.a4;
top_iph->daddr = x->id.daddr.a4;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.