diff options
Diffstat (limited to 'net/netfilter/xt_multiport.c')
| -rw-r--r-- | net/netfilter/xt_multiport.c | 52 |
1 files changed, 33 insertions, 19 deletions
diff --git a/net/netfilter/xt_multiport.c b/net/netfilter/xt_multiport.c index ac1d3c3..1cde0e4 100644 --- a/net/netfilter/xt_multiport.c +++ b/net/netfilter/xt_multiport.c @@ -42,29 +42,43 @@ ports_match_v1(const struct xt_multiport_v1 *minfo, e = minfo->ports[++i]; pr_debug("src or dst matches with %d-%d?\n", s, e); - if (minfo->flags == XT_MULTIPORT_SOURCE - && src >= s && src <= e) - return true ^ minfo->invert; - if (minfo->flags == XT_MULTIPORT_DESTINATION - && dst >= s && dst <= e) - return true ^ minfo->invert; - if (minfo->flags == XT_MULTIPORT_EITHER - && ((dst >= s && dst <= e) - || (src >= s && src <= e))) - return true ^ minfo->invert; + switch (minfo->flags) { + case XT_MULTIPORT_SOURCE: + if (src >= s && src <= e) + return true ^ minfo->invert; + break; + case XT_MULTIPORT_DESTINATION: + if (dst >= s && dst <= e) + return true ^ minfo->invert; + break; + case XT_MULTIPORT_EITHER: + if ((dst >= s && dst <= e) || + (src >= s && src <= e)) + return true ^ minfo->invert; + break; + default: + break; + } } else { /* exact port matching */ pr_debug("src or dst matches with %d?\n", s); - if (minfo->flags == XT_MULTIPORT_SOURCE - && src == s) - return true ^ minfo->invert; - if (minfo->flags == XT_MULTIPORT_DESTINATION - && dst == s) - return true ^ minfo->invert; - if (minfo->flags == XT_MULTIPORT_EITHER - && (src == s || dst == s)) - return true ^ minfo->invert; + switch (minfo->flags) { + case XT_MULTIPORT_SOURCE: + if (src == s) + return true ^ minfo->invert; + break; + case XT_MULTIPORT_DESTINATION: + if (dst == s) + return true ^ minfo->invert; + break; + case XT_MULTIPORT_EITHER: + if (src == s || dst == s) + return true ^ minfo->invert; + break; + default: + break; + } } } |
