hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

netfilter: xt_multiport: Use switch case instead of multiple condition checks 

There are multiple equality condition checks in the original codes, so it
is better to use switch case instead of them.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Gao Feng 2016-09-26 21:23:37 +08:00 committed by Pablo Neira Ayuso
parent 432490f9d4
commit dd2602d00f
1 changed files with 21 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
net/netfilter/xt_multiport.c
View File

@ -42,29 +42,31 @@ ports_match_v1(const struct xt_multiport_v1 *minfo,
e = minfo->ports[++i]; e = minfo->ports[++i];
pr_debug("src or dst matches with %d-%d?\n", s, e); pr_debug("src or dst matches with %d-%d?\n", s, e);
if (minfo->flags == XT_MULTIPORT_SOURCE switch (minfo->flags) {
&& src >= s && src <= e) case XT_MULTIPORT_SOURCE:
return true ^ minfo->invert; return (src >= s && src <= e) ^ minfo->invert;
if (minfo->flags == XT_MULTIPORT_DESTINATION case XT_MULTIPORT_DESTINATION:
&& dst >= s && dst <= e) return (dst >= s && dst <= e) ^ minfo->invert;
return true ^ minfo->invert; case XT_MULTIPORT_EITHER:
if (minfo->flags == XT_MULTIPORT_EITHER return ((dst >= s && dst <= e) ||
&& ((dst >= s && dst <= e) (src >= s && src <= e)) ^ minfo->invert;
|| (src >= s && src <= e))) default:
return true ^ minfo->invert; break;
}
} else { } else {
/* exact port matching */ /* exact port matching */
pr_debug("src or dst matches with %d?\n", s); pr_debug("src or dst matches with %d?\n", s);
if (minfo->flags == XT_MULTIPORT_SOURCE switch (minfo->flags) {
&& src == s) case XT_MULTIPORT_SOURCE:
return true ^ minfo->invert; return (src == s) ^ minfo->invert;
if (minfo->flags == XT_MULTIPORT_DESTINATION case XT_MULTIPORT_DESTINATION:
&& dst == s) return (dst == s) ^ minfo->invert;
return true ^ minfo->invert; case XT_MULTIPORT_EITHER:
if (minfo->flags == XT_MULTIPORT_EITHER return (src == s || dst == s) ^ minfo->invert;
&& (src == s || dst == s)) default:
return true ^ minfo->invert; break;
}
} }
} }