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netfilter: conntrack: avoid same-timeout update

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No need to dirty a cache line if timeout is unchanged.
Also, WARN() is useless here: we crash on 'skb->len' access
if skb is NULL.

Last, ct->timeout is u32, not 'unsigned long' so adapt the
function prototype accordingly.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal
2019-02-21 15:38:29 +01:00
committed by Pablo Neira Ayuso
parent d2c5c103b1
commit cc16921351
2 changed files with 9 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/net/netfilter/nf_conntrack.h
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@ -190,23 +190,23 @@ bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
void __nf_ct_refresh_acct(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
const struct sk_buff *skb,
unsigned long extra_jiffies, int do_acct);
u32 extra_jiffies, bool do_acct);
/* Refresh conntrack for this many jiffies and do accounting */
static inline void nf_ct_refresh_acct(struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
const struct sk_buff *skb,
unsigned long extra_jiffies)
u32 extra_jiffies)
{
__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, 1);
__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, true);
}
/* Refresh conntrack for this many jiffies */
static inline void nf_ct_refresh(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned long extra_jiffies)
u32 extra_jiffies)
{
__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0);
__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, false);
}
/* kill conntrack and do accounting */