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author | David S. Miller <davem@davemloft.net> | 2010-12-12 21:55:08 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2010-12-12 22:08:17 -0800 |
commit | 323e126f0c5995f779d7df7fd035f6e8fed8764d (patch) | |
tree | 402c7267a45ae488363bb1ef8e4c786b65b82572 /net/ipv4 | |
parent | a02e4b7dae455151c423e2f69ef222c502a321fd (diff) | |
download | kernel_samsung_tuna-323e126f0c5995f779d7df7fd035f6e8fed8764d.zip kernel_samsung_tuna-323e126f0c5995f779d7df7fd035f6e8fed8764d.tar.gz kernel_samsung_tuna-323e126f0c5995f779d7df7fd035f6e8fed8764d.tar.bz2 |
ipv4: Don't pre-seed hoplimit metric.
Always go through a new ip4_dst_hoplimit() helper, just like ipv6.
This allowed several simplifications:
1) The interim dst_metric_hoplimit() can go as it's no longer
userd.
2) The sysctl_ip_default_ttl entry no longer needs to use
ipv4_doint_and_flush, since the sysctl is not cached in
routing cache metrics any longer.
3) ipv4_doint_and_flush no longer needs to be exported and
therefore can be marked static.
When ipv4_doint_and_flush_strategy was removed some time ago,
the external declaration in ip.h was mistakenly left around
so kill that off too.
We have to move the sysctl_ip_default_ttl declaration into
ipv4's route cache definition header net/route.h, because
currently net/ip.h (where the declaration lives now) has
a back dependency on net/route.h
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/devinet.c | 6 | ||||
-rw-r--r-- | net/ipv4/ip_gre.c | 2 | ||||
-rw-r--r-- | net/ipv4/ip_output.c | 3 | ||||
-rw-r--r-- | net/ipv4/netfilter/ipt_REJECT.c | 2 | ||||
-rw-r--r-- | net/ipv4/route.c | 2 | ||||
-rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 2 | ||||
-rw-r--r-- | net/ipv4/xfrm4_mode_tunnel.c | 2 |
7 files changed, 9 insertions, 10 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 3b06770..748cb5b 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 46eb3dc..eb68a0e 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 ea28fa5..04c7b3b 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 f130907..1ff79e5 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 90b5a37..770f704 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 1b4ec21..e85ff59 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 63b854e..534972e 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; |