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| author |   Li RongQing <lirongqing@baidu.com> | 2019-03-26 20:06:20 +0800 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2019-04-08 22:58:16 +0200 |
| commit | 01902f8c85bfde343a4c2b7428d18762442f3a25 (patch) | |
| tree | bcb58c0ebc0bdbc98949d4dd351b7961f6b33606 /include | |
| parent | ipvs: allow tunneling with gue encapsulation (diff) | |
| download | linux-dev-01902f8c85bfde343a4c2b7428d18762442f3a25.tar.xz linux-dev-01902f8c85bfde343a4c2b7428d18762442f3a25.zip | |
netfilter: optimize nf_inet_addr_cmp
optimize nf_inet_addr_cmp by 64bit xor computation
similar to ipv6_addr_equal()
Signed-off-by: Yuan Linsi <yuanlinsi01@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netfilter.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 72cb19c3db6a..4e0145ea033e 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -24,10 +24,17 @@ static inline int NF_DROP_GETERR(int verdict) static inline int nf_inet_addr_cmp(const union nf_inet_addr *a1, const union nf_inet_addr *a2) { +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 + const unsigned long *ul1 = (const unsigned long *)a1; + const unsigned long *ul2 = (const unsigned long *)a2; + + return ((ul1[0] ^ ul2[0]) | (ul1[1] ^ ul2[1])) == 0UL; +#else return a1->all[0] == a2->all[0] && a1->all[1] == a2->all[1] && a1->all[2] == a2->all[2] && a1->all[3] == a2->all[3]; +#endif } static inline void nf_inet_addr_mask(const union nf_inet_addr *a1, |