net: implements ip_route_input_noref()
ip_route_input() is the version returning a refcounted dst, while ip_route_input_noref() returns a non refcounted one. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
7fee226ad2
Коммит
407eadd996
|
@ -112,7 +112,22 @@ extern void rt_cache_flush_batch(void);
|
|||
extern int __ip_route_output_key(struct net *, struct rtable **, const struct flowi *flp);
|
||||
extern int ip_route_output_key(struct net *, struct rtable **, struct flowi *flp);
|
||||
extern int ip_route_output_flow(struct net *, struct rtable **rp, struct flowi *flp, struct sock *sk, int flags);
|
||||
extern int ip_route_input(struct sk_buff*, __be32 dst, __be32 src, u8 tos, struct net_device *devin);
|
||||
|
||||
extern int ip_route_input_common(struct sk_buff *skb, __be32 dst, __be32 src,
|
||||
u8 tos, struct net_device *devin, bool noref);
|
||||
|
||||
static inline int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src,
|
||||
u8 tos, struct net_device *devin)
|
||||
{
|
||||
return ip_route_input_common(skb, dst, src, tos, devin, false);
|
||||
}
|
||||
|
||||
static inline int ip_route_input_noref(struct sk_buff *skb, __be32 dst, __be32 src,
|
||||
u8 tos, struct net_device *devin)
|
||||
{
|
||||
return ip_route_input_common(skb, dst, src, tos, devin, true);
|
||||
}
|
||||
|
||||
extern unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph, unsigned short new_mtu, struct net_device *dev);
|
||||
extern void ip_rt_send_redirect(struct sk_buff *skb);
|
||||
|
||||
|
|
|
@ -2277,8 +2277,8 @@ martian_source:
|
|||
goto e_inval;
|
||||
}
|
||||
|
||||
int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr,
|
||||
u8 tos, struct net_device *dev)
|
||||
int ip_route_input_common(struct sk_buff *skb, __be32 daddr, __be32 saddr,
|
||||
u8 tos, struct net_device *dev, bool noref)
|
||||
{
|
||||
struct rtable * rth;
|
||||
unsigned hash;
|
||||
|
@ -2304,10 +2304,15 @@ int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr,
|
|||
rth->fl.mark == skb->mark &&
|
||||
net_eq(dev_net(rth->u.dst.dev), net) &&
|
||||
!rt_is_expired(rth)) {
|
||||
dst_use(&rth->u.dst, jiffies);
|
||||
if (noref) {
|
||||
dst_use_noref(&rth->u.dst, jiffies);
|
||||
skb_dst_set_noref(skb, &rth->u.dst);
|
||||
} else {
|
||||
dst_use(&rth->u.dst, jiffies);
|
||||
skb_dst_set(skb, &rth->u.dst);
|
||||
}
|
||||
RT_CACHE_STAT_INC(in_hit);
|
||||
rcu_read_unlock();
|
||||
skb_dst_set(skb, &rth->u.dst);
|
||||
return 0;
|
||||
}
|
||||
RT_CACHE_STAT_INC(in_hlist_search);
|
||||
|
@ -2350,6 +2355,7 @@ skip_cache:
|
|||
}
|
||||
return ip_route_input_slow(skb, daddr, saddr, tos, dev);
|
||||
}
|
||||
EXPORT_SYMBOL(ip_route_input_common);
|
||||
|
||||
static int __mkroute_output(struct rtable **result,
|
||||
struct fib_result *res,
|
||||
|
@ -3361,5 +3367,4 @@ void __init ip_static_sysctl_init(void)
|
|||
#endif
|
||||
|
||||
EXPORT_SYMBOL(__ip_select_ident);
|
||||
EXPORT_SYMBOL(ip_route_input);
|
||||
EXPORT_SYMBOL(ip_route_output_key);
|
||||
|
|
Загрузка…
Ссылка в новой задаче