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authorJan Engelhardt <jengelh@medozas.de>2010-03-23 17:40:13 +0100
committerJan Engelhardt <jengelh@medozas.de>2010-03-25 16:03:12 +0100
commit9f5673174161cc026a6c87f70d9b457e7ad82a80 (patch)
treec0f763f86b93a476837193c4621f431960745ff1 /net
parent7911b5c75b613f533b6cb6f999041dd5ea3bb004 (diff)
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netfilter: xtables: untangle spaghetti if clauses in checkentry
As I'm changing the return values soon, I want to have a clear visual path. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/xt_dccp.c10
-rw-r--r--net/netfilter/xt_sctp.c20
2 files changed, 19 insertions, 11 deletions
diff --git a/net/netfilter/xt_dccp.c b/net/netfilter/xt_dccp.c
index 0989f29ade2..8f6014f7c88 100644
--- a/net/netfilter/xt_dccp.c
+++ b/net/netfilter/xt_dccp.c
@@ -127,9 +127,13 @@ static bool dccp_mt_check(const struct xt_mtchk_param *par)
{
const struct xt_dccp_info *info = par->matchinfo;
- return !(info->flags & ~XT_DCCP_VALID_FLAGS)
- && !(info->invflags & ~XT_DCCP_VALID_FLAGS)
- && !(info->invflags & ~info->flags);
+ if (info->flags & ~XT_DCCP_VALID_FLAGS)
+ return false;
+ if (info->invflags & ~XT_DCCP_VALID_FLAGS)
+ return false;
+ if (info->invflags & ~info->flags)
+ return false;
+ return true;
}
static struct xt_match dccp_mt_reg[] __read_mostly = {
diff --git a/net/netfilter/xt_sctp.c b/net/netfilter/xt_sctp.c
index 43c7e1de532..977b182dea5 100644
--- a/net/netfilter/xt_sctp.c
+++ b/net/netfilter/xt_sctp.c
@@ -148,14 +148,18 @@ static bool sctp_mt_check(const struct xt_mtchk_param *par)
{
const struct xt_sctp_info *info = par->matchinfo;
- return !(info->flags & ~XT_SCTP_VALID_FLAGS)
- && !(info->invflags & ~XT_SCTP_VALID_FLAGS)
- && !(info->invflags & ~info->flags)
- && ((!(info->flags & XT_SCTP_CHUNK_TYPES)) ||
- (info->chunk_match_type &
- (SCTP_CHUNK_MATCH_ALL
- | SCTP_CHUNK_MATCH_ANY
- | SCTP_CHUNK_MATCH_ONLY)));
+ if (info->flags & ~XT_SCTP_VALID_FLAGS)
+ return false;
+ if (info->invflags & ~XT_SCTP_VALID_FLAGS)
+ return false;
+ if (info->invflags & ~info->flags)
+ return false;
+ if (!(info->flags & XT_SCTP_CHUNK_TYPES))
+ return true;
+ if (info->chunk_match_type & (SCTP_CHUNK_MATCH_ALL |
+ SCTP_CHUNK_MATCH_ANY | SCTP_CHUNK_MATCH_ONLY))
+ return true;
+ return false;
}
static struct xt_match sctp_mt_reg[] __read_mostly = {