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ipvs: rename functions related to dst_cache reset

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Move and give better names to two functions:

- ip_vs_dst_reset to __ip_vs_dst_cache_reset
- __ip_vs_dev_reset to ip_vs_forget_dev

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off by: Hans Schillstrom <hans@schillstrom.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Julian Anastasov 2013-03-21 11:58:02 +02:00 committed by Pablo Neira Ayuso
parent b8abdf0984
commit d1deae4d3a
3 changed files with 22 additions and 27 deletions
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1
include/net/ip_vs.h
View File

@ -1427,7 +1427,6 @@ extern int ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
extern int ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, int offset,
unsigned int hooknum, struct ip_vs_iphdr *iph);
extern void ip_vs_dst_reset(struct ip_vs_dest *dest);
#ifdef CONFIG_IP_VS_IPV6
extern int ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,

34
net/netfilter/ipvs/ip_vs_ctl.c
View File

@ -641,6 +641,17 @@ struct ip_vs_dest *ip_vs_find_dest(struct net *net, int af,
return dest;
}
/* Release dst_cache for dest in user context */
static void __ip_vs_dst_cache_reset(struct ip_vs_dest *dest)
{
struct dst_entry *old_dst;
old_dst = dest->dst_cache;
dest->dst_cache = NULL;
dst_release(old_dst);
dest->dst_saddr.ip = 0;
}
/*
* Lookup dest by {svc,addr,port} in the destination trash.
* The destination trash is used to hold the destinations that are removed
@ -690,7 +701,7 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr,
IP_VS_DBG_ADDR(svc->af, &dest->addr),
ntohs(dest->port));
list_del(&dest->n_list);
ip_vs_dst_reset(dest);
__ip_vs_dst_cache_reset(dest);
__ip_vs_unbind_svc(dest);
free_percpu(dest->stats.cpustats);
kfree(dest);
@ -717,7 +728,7 @@ static void ip_vs_trash_cleanup(struct net *net)
list_for_each_entry_safe(dest, nxt, &ipvs->dest_trash, n_list) {
list_del(&dest->n_list);
ip_vs_dst_reset(dest);
__ip_vs_dst_cache_reset(dest);
__ip_vs_unbind_svc(dest);
free_percpu(dest->stats.cpustats);
kfree(dest);
@ -811,7 +822,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
dest->l_threshold = udest->l_threshold;
spin_lock_bh(&dest->dst_lock);
ip_vs_dst_reset(dest);
__ip_vs_dst_cache_reset(dest);
spin_unlock_bh(&dest->dst_lock);
if (add)
@ -1037,7 +1048,7 @@ static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest)
dest->vfwmark,
IP_VS_DBG_ADDR(dest->af, &dest->addr),
ntohs(dest->port));
ip_vs_dst_reset(dest);
__ip_vs_dst_cache_reset(dest);
/* simply decrease svc->refcnt here, let the caller check
and release the service if nobody refers to it.
Only user context can release destination and service,
@ -1496,11 +1507,10 @@ void ip_vs_service_net_cleanup(struct net *net)
mutex_unlock(&__ip_vs_mutex);
LeaveFunction(2);
}
/*
* Release dst hold by dst_cache
*/
/* Put all references for device (dst_cache) */
static inline void
__ip_vs_dev_reset(struct ip_vs_dest *dest, struct net_device *dev)
ip_vs_forget_dev(struct ip_vs_dest *dest, struct net_device *dev)
{
spin_lock_bh(&dest->dst_lock);
if (dest->dst_cache && dest->dst_cache->dev == dev) {
@ -1509,7 +1519,7 @@ __ip_vs_dev_reset(struct ip_vs_dest *dest, struct net_device *dev)
IP_VS_DBG_ADDR(dest->af, &dest->addr),
ntohs(dest->port),
atomic_read(&dest->refcnt));
ip_vs_dst_reset(dest);
__ip_vs_dst_cache_reset(dest);
}
spin_unlock_bh(&dest->dst_lock);
@ -1537,7 +1547,7 @@ static int ip_vs_dst_event(struct notifier_block *this, unsigned long event,
if (net_eq(svc->net, net)) {
list_for_each_entry(dest, &svc->destinations,
n_list) {
__ip_vs_dev_reset(dest, dev);
ip_vs_forget_dev(dest, dev);
}
}
}
@ -1546,7 +1556,7 @@ static int ip_vs_dst_event(struct notifier_block *this, unsigned long event,
if (net_eq(svc->net, net)) {
list_for_each_entry(dest, &svc->destinations,
n_list) {
__ip_vs_dev_reset(dest, dev);
ip_vs_forget_dev(dest, dev);
}
}
@ -1554,7 +1564,7 @@ static int ip_vs_dst_event(struct notifier_block *this, unsigned long event,
}
list_for_each_entry(dest, &ipvs->dest_trash, n_list) {
__ip_vs_dev_reset(dest, dev);
ip_vs_forget_dev(dest, dev);
}
mutex_unlock(&__ip_vs_mutex);
LeaveFunction(2);

14
net/netfilter/ipvs/ip_vs_xmit.c
View File

@ -362,20 +362,6 @@ __ip_vs_get_out_rt_v6(struct sk_buff *skb, struct ip_vs_dest *dest,
#endif
/*
* Release dest->dst_cache before a dest is removed
*/
void
ip_vs_dst_reset(struct ip_vs_dest *dest)
{
struct dst_entry *old_dst;
old_dst = dest->dst_cache;
dest->dst_cache = NULL;
dst_release(old_dst);
dest->dst_saddr.ip = 0;
}
/* return NF_ACCEPT to allow forwarding or other NF_xxx on error */
static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
struct ip_vs_conn *cp)