[NETFILTER]: Convert x_tables matches/targets to centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_CLASSIFY.c b/net/netfilter/xt_CLASSIFY.c
index 78ee266..6b36e84 100644
--- a/net/netfilter/xt_CLASSIFY.c
+++ b/net/netfilter/xt_CLASSIFY.c
@@ -39,47 +39,22 @@
return XT_CONTINUE;
}
-static int
-checkentry(const char *tablename,
- const void *e,
- void *targinfo,
- unsigned int targinfosize,
- unsigned int hook_mask)
-{
- if (targinfosize != XT_ALIGN(sizeof(struct xt_classify_target_info))){
- printk(KERN_ERR "CLASSIFY: invalid size (%u != %Zu).\n",
- targinfosize,
- XT_ALIGN(sizeof(struct xt_classify_target_info)));
- return 0;
- }
-
- if (hook_mask & ~((1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_FORWARD) |
- (1 << NF_IP_POST_ROUTING))) {
- printk(KERN_ERR "CLASSIFY: only valid in LOCAL_OUT, FORWARD "
- "and POST_ROUTING.\n");
- return 0;
- }
-
- if (strcmp(tablename, "mangle") != 0) {
- printk(KERN_ERR "CLASSIFY: can only be called from "
- "\"mangle\" table, not \"%s\".\n",
- tablename);
- return 0;
- }
-
- return 1;
-}
-
static struct xt_target classify_reg = {
.name = "CLASSIFY",
.target = target,
- .checkentry = checkentry,
+ .targetsize = sizeof(struct xt_classify_target_info),
+ .table = "mangle",
+ .hooks = (1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_FORWARD) |
+ (1 << NF_IP_POST_ROUTING),
.me = THIS_MODULE,
};
static struct xt_target classify6_reg = {
.name = "CLASSIFY",
.target = target,
- .checkentry = checkentry,
+ .targetsize = sizeof(struct xt_classify_target_info),
+ .table = "mangle",
+ .hooks = (1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_FORWARD) |
+ (1 << NF_IP_POST_ROUTING),
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c
index 22506e3..b269ba9 100644
--- a/net/netfilter/xt_CONNMARK.c
+++ b/net/netfilter/xt_CONNMARK.c
@@ -79,12 +79,6 @@
unsigned int hook_mask)
{
struct xt_connmark_target_info *matchinfo = targinfo;
- if (targinfosize != XT_ALIGN(sizeof(struct xt_connmark_target_info))) {
- printk(KERN_WARNING "CONNMARK: targinfosize %u != %Zu\n",
- targinfosize,
- XT_ALIGN(sizeof(struct xt_connmark_target_info)));
- return 0;
- }
if (matchinfo->mode == XT_CONNMARK_RESTORE) {
if (strcmp(tablename, "mangle") != 0) {
@@ -102,16 +96,19 @@
}
static struct xt_target connmark_reg = {
- .name = "CONNMARK",
- .target = &target,
- .checkentry = &checkentry,
- .me = THIS_MODULE
+ .name = "CONNMARK",
+ .target = target,
+ .targetsize = sizeof(struct xt_connmark_target_info),
+ .checkentry = checkentry,
+ .me = THIS_MODULE
};
+
static struct xt_target connmark6_reg = {
- .name = "CONNMARK",
- .target = &target,
- .checkentry = &checkentry,
- .me = THIS_MODULE
+ .name = "CONNMARK",
+ .target = target,
+ .targetsize = sizeof(struct xt_connmark_target_info),
+ .checkentry = checkentry,
+ .me = THIS_MODULE
};
static int __init init(void)
diff --git a/net/netfilter/xt_MARK.c b/net/netfilter/xt_MARK.c
index 0c11ee9..1bc968b 100644
--- a/net/netfilter/xt_MARK.c
+++ b/net/netfilter/xt_MARK.c
@@ -78,23 +78,10 @@
{
struct xt_mark_target_info *markinfo = targinfo;
- if (targinfosize != XT_ALIGN(sizeof(struct xt_mark_target_info))) {
- printk(KERN_WARNING "MARK: targinfosize %u != %Zu\n",
- targinfosize,
- XT_ALIGN(sizeof(struct xt_mark_target_info)));
- return 0;
- }
-
- if (strcmp(tablename, "mangle") != 0) {
- printk(KERN_WARNING "MARK: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
- return 0;
- }
-
if (markinfo->mark > 0xffffffff) {
printk(KERN_WARNING "MARK: Only supports 32bit wide mark\n");
return 0;
}
-
return 1;
}
@@ -107,18 +94,6 @@
{
struct xt_mark_target_info_v1 *markinfo = targinfo;
- if (targinfosize != XT_ALIGN(sizeof(struct xt_mark_target_info_v1))){
- printk(KERN_WARNING "MARK: targinfosize %u != %Zu\n",
- targinfosize,
- XT_ALIGN(sizeof(struct xt_mark_target_info_v1)));
- return 0;
- }
-
- if (strcmp(tablename, "mangle") != 0) {
- printk(KERN_WARNING "MARK: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
- return 0;
- }
-
if (markinfo->mode != XT_MARK_SET
&& markinfo->mode != XT_MARK_AND
&& markinfo->mode != XT_MARK_OR) {
@@ -126,18 +101,18 @@
markinfo->mode);
return 0;
}
-
if (markinfo->mark > 0xffffffff) {
printk(KERN_WARNING "MARK: Only supports 32bit wide mark\n");
return 0;
}
-
return 1;
}
static struct xt_target ipt_mark_reg_v0 = {
.name = "MARK",
.target = target_v0,
+ .targetsize = sizeof(struct xt_mark_target_info),
+ .table = "mangle",
.checkentry = checkentry_v0,
.me = THIS_MODULE,
.revision = 0,
@@ -146,6 +121,8 @@
static struct xt_target ipt_mark_reg_v1 = {
.name = "MARK",
.target = target_v1,
+ .targetsize = sizeof(struct xt_mark_target_info_v1),
+ .table = "mangle",
.checkentry = checkentry_v1,
.me = THIS_MODULE,
.revision = 1,
@@ -154,6 +131,8 @@
static struct xt_target ip6t_mark_reg_v0 = {
.name = "MARK",
.target = target_v0,
+ .targetsize = sizeof(struct xt_mark_target_info),
+ .table = "mangle",
.checkentry = checkentry_v0,
.me = THIS_MODULE,
.revision = 0,
diff --git a/net/netfilter/xt_NFQUEUE.c b/net/netfilter/xt_NFQUEUE.c
index 8b76b6f..b1da0ad 100644
--- a/net/netfilter/xt_NFQUEUE.c
+++ b/net/netfilter/xt_NFQUEUE.c
@@ -36,41 +36,24 @@
return NF_QUEUE_NR(tinfo->queuenum);
}
-static int
-checkentry(const char *tablename,
- const void *entry,
- void *targinfo,
- unsigned int targinfosize,
- unsigned int hook_mask)
-{
- if (targinfosize != XT_ALIGN(sizeof(struct xt_NFQ_info))) {
- printk(KERN_WARNING "NFQUEUE: targinfosize %u != %Zu\n",
- targinfosize,
- XT_ALIGN(sizeof(struct xt_NFQ_info)));
- return 0;
- }
-
- return 1;
-}
-
static struct xt_target ipt_NFQ_reg = {
.name = "NFQUEUE",
.target = target,
- .checkentry = checkentry,
+ .targetsize = sizeof(struct xt_NFQ_info),
.me = THIS_MODULE,
};
static struct xt_target ip6t_NFQ_reg = {
.name = "NFQUEUE",
.target = target,
- .checkentry = checkentry,
+ .targetsize = sizeof(struct xt_NFQ_info),
.me = THIS_MODULE,
};
static struct xt_target arpt_NFQ_reg = {
.name = "NFQUEUE",
.target = target,
- .checkentry = checkentry,
+ .targetsize = sizeof(struct xt_NFQ_info),
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_NOTRACK.c b/net/netfilter/xt_NOTRACK.c
index 24d477a..8bacbe1 100644
--- a/net/netfilter/xt_NOTRACK.c
+++ b/net/netfilter/xt_NOTRACK.c
@@ -33,38 +33,20 @@
return XT_CONTINUE;
}
-static int
-checkentry(const char *tablename,
- const void *entry,
- void *targinfo,
- unsigned int targinfosize,
- unsigned int hook_mask)
-{
- if (targinfosize != 0) {
- printk(KERN_WARNING "NOTRACK: targinfosize %u != 0\n",
- targinfosize);
- return 0;
- }
-
- if (strcmp(tablename, "raw") != 0) {
- printk(KERN_WARNING "NOTRACK: can only be called from \"raw\" table, not \"%s\"\n", tablename);
- return 0;
- }
-
- return 1;
-}
-
-static struct xt_target notrack_reg = {
- .name = "NOTRACK",
- .target = target,
- .checkentry = checkentry,
- .me = THIS_MODULE,
+static struct xt_target notrack_reg = {
+ .name = "NOTRACK",
+ .target = target,
+ .targetsize = 0,
+ .table = "raw",
+ .me = THIS_MODULE,
};
-static struct xt_target notrack6_reg = {
- .name = "NOTRACK",
- .target = target,
- .checkentry = checkentry,
- .me = THIS_MODULE,
+
+static struct xt_target notrack6_reg = {
+ .name = "NOTRACK",
+ .target = target,
+ .targetsize = 0,
+ .table = "raw",
+ .me = THIS_MODULE,
};
static int __init init(void)
diff --git a/net/netfilter/xt_comment.c b/net/netfilter/xt_comment.c
index 4ba6fd6..b3f07aa 100644
--- a/net/netfilter/xt_comment.c
+++ b/net/netfilter/xt_comment.c
@@ -28,30 +28,17 @@
return 1;
}
-static int
-checkentry(const char *tablename,
- const void *ip,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- /* Check the size */
- if (matchsize != XT_ALIGN(sizeof(struct xt_comment_info)))
- return 0;
- return 1;
-}
-
static struct xt_match comment_match = {
.name = "comment",
.match = match,
- .checkentry = checkentry,
+ .matchsize = sizeof(struct xt_comment_info),
.me = THIS_MODULE
};
static struct xt_match comment6_match = {
.name = "comment",
.match = match,
- .checkentry = checkentry,
+ .matchsize = sizeof(struct xt_comment_info),
.me = THIS_MODULE
};
diff --git a/net/netfilter/xt_connbytes.c b/net/netfilter/xt_connbytes.c
index 150d2a4..d985135 100644
--- a/net/netfilter/xt_connbytes.c
+++ b/net/netfilter/xt_connbytes.c
@@ -128,9 +128,6 @@
{
const struct xt_connbytes_info *sinfo = matchinfo;
- if (matchsize != XT_ALIGN(sizeof(struct xt_connbytes_info)))
- return 0;
-
if (sinfo->what != XT_CONNBYTES_PKTS &&
sinfo->what != XT_CONNBYTES_BYTES &&
sinfo->what != XT_CONNBYTES_AVGPKT)
@@ -146,14 +143,16 @@
static struct xt_match connbytes_match = {
.name = "connbytes",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .checkentry = check,
+ .matchsize = sizeof(struct xt_connbytes_info),
.me = THIS_MODULE
};
static struct xt_match connbytes6_match = {
.name = "connbytes",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .checkentry = check,
+ .matchsize = sizeof(struct xt_connbytes_info),
.me = THIS_MODULE
};
diff --git a/net/netfilter/xt_connmark.c b/net/netfilter/xt_connmark.c
index d06e925..2bb987f 100644
--- a/net/netfilter/xt_connmark.c
+++ b/net/netfilter/xt_connmark.c
@@ -56,32 +56,30 @@
unsigned int matchsize,
unsigned int hook_mask)
{
- struct xt_connmark_info *cm =
- (struct xt_connmark_info *)matchinfo;
- if (matchsize != XT_ALIGN(sizeof(struct xt_connmark_info)))
- return 0;
+ struct xt_connmark_info *cm = (struct xt_connmark_info *)matchinfo;
if (cm->mark > 0xffffffff || cm->mask > 0xffffffff) {
printk(KERN_WARNING "connmark: only support 32bit mark\n");
return 0;
}
-
return 1;
}
static struct xt_match connmark_match = {
- .name = "connmark",
- .match = &match,
- .checkentry = &checkentry,
- .me = THIS_MODULE
-};
-static struct xt_match connmark6_match = {
- .name = "connmark",
- .match = &match,
- .checkentry = &checkentry,
- .me = THIS_MODULE
+ .name = "connmark",
+ .match = match,
+ .matchsize = sizeof(struct xt_connmark_info),
+ .checkentry = checkentry,
+ .me = THIS_MODULE
};
+static struct xt_match connmark6_match = {
+ .name = "connmark",
+ .match = match,
+ .matchsize = sizeof(struct xt_connmark_info),
+ .checkentry = checkentry,
+ .me = THIS_MODULE
+};
static int __init init(void)
{
diff --git a/net/netfilter/xt_conntrack.c b/net/netfilter/xt_conntrack.c
index ffdebc9..45a5a7d 100644
--- a/net/netfilter/xt_conntrack.c
+++ b/net/netfilter/xt_conntrack.c
@@ -201,22 +201,10 @@
#endif /* CONFIG_NF_IP_CONNTRACK */
-static int check(const char *tablename,
- const void *ip,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- if (matchsize != XT_ALIGN(sizeof(struct xt_conntrack_info)))
- return 0;
-
- return 1;
-}
-
static struct xt_match conntrack_match = {
.name = "conntrack",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_conntrack_info),
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_dccp.c b/net/netfilter/xt_dccp.c
index 779f42f..06e9ef2 100644
--- a/net/netfilter/xt_dccp.c
+++ b/net/netfilter/xt_dccp.c
@@ -133,52 +133,29 @@
unsigned int matchsize,
unsigned int hook_mask)
{
- const struct ipt_ip *ip = inf;
- const struct xt_dccp_info *info;
+ const struct xt_dccp_info *info = matchinfo;
- info = (const struct xt_dccp_info *)matchinfo;
-
- return ip->proto == IPPROTO_DCCP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_dccp_info))
- && !(info->flags & ~XT_DCCP_VALID_FLAGS)
+ return !(info->flags & ~XT_DCCP_VALID_FLAGS)
&& !(info->invflags & ~XT_DCCP_VALID_FLAGS)
&& !(info->invflags & ~info->flags);
}
-static int
-checkentry6(const char *tablename,
- const void *inf,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- const struct ip6t_ip6 *ip = inf;
- const struct xt_dccp_info *info;
-
- info = (const struct xt_dccp_info *)matchinfo;
-
- return ip->proto == IPPROTO_DCCP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_dccp_info))
- && !(info->flags & ~XT_DCCP_VALID_FLAGS)
- && !(info->invflags & ~XT_DCCP_VALID_FLAGS)
- && !(info->invflags & ~info->flags);
-}
-
-
static struct xt_match dccp_match =
{
.name = "dccp",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_dccp_info),
+ .proto = IPPROTO_DCCP,
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
static struct xt_match dccp6_match =
{
.name = "dccp",
- .match = &match,
- .checkentry = &checkentry6,
+ .match = match,
+ .matchsize = sizeof(struct xt_dccp_info),
+ .proto = IPPROTO_DCCP,
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_helper.c b/net/netfilter/xt_helper.c
index 0ddb323..dc28f49 100644
--- a/net/netfilter/xt_helper.c
+++ b/net/netfilter/xt_helper.c
@@ -142,24 +142,21 @@
struct xt_helper_info *info = matchinfo;
info->name[29] = '\0';
-
- /* verify size */
- if (matchsize != XT_ALIGN(sizeof(struct xt_helper_info)))
- return 0;
-
return 1;
}
static struct xt_match helper_match = {
.name = "helper",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_helper_info),
+ .checkentry = check,
.me = THIS_MODULE,
};
static struct xt_match helper6_match = {
.name = "helper",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_helper_info),
+ .checkentry = check,
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_length.c b/net/netfilter/xt_length.c
index 39c8fae..11a2812 100644
--- a/net/netfilter/xt_length.c
+++ b/net/netfilter/xt_length.c
@@ -50,29 +50,17 @@
return (pktlen >= info->min && pktlen <= info->max) ^ info->invert;
}
-static int
-checkentry(const char *tablename,
- const void *ip,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- if (matchsize != XT_ALIGN(sizeof(struct xt_length_info)))
- return 0;
-
- return 1;
-}
-
static struct xt_match length_match = {
.name = "length",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_length_info),
.me = THIS_MODULE,
};
+
static struct xt_match length6_match = {
.name = "length",
- .match = &match6,
- .checkentry = &checkentry,
+ .match = match6,
+ .matchsize = sizeof(struct xt_length_info),
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_limit.c b/net/netfilter/xt_limit.c
index 15e4050..dec3f02 100644
--- a/net/netfilter/xt_limit.c
+++ b/net/netfilter/xt_limit.c
@@ -113,9 +113,6 @@
{
struct xt_rateinfo *r = matchinfo;
- if (matchsize != XT_ALIGN(sizeof(struct xt_rateinfo)))
- return 0;
-
/* Check for overflow. */
if (r->burst == 0
|| user2credits(r->avg * r->burst) < user2credits(r->avg)) {
@@ -140,12 +137,14 @@
static struct xt_match ipt_limit_reg = {
.name = "limit",
.match = ipt_limit_match,
+ .matchsize = sizeof(struct xt_rateinfo),
.checkentry = ipt_limit_checkentry,
.me = THIS_MODULE,
};
static struct xt_match limit6_reg = {
.name = "limit",
.match = ipt_limit_match,
+ .matchsize = sizeof(struct xt_rateinfo),
.checkentry = ipt_limit_checkentry,
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_mac.c b/net/netfilter/xt_mac.c
index 0461dcb..e207726 100644
--- a/net/netfilter/xt_mac.c
+++ b/net/netfilter/xt_mac.c
@@ -42,37 +42,20 @@
^ info->invert));
}
-static int
-ipt_mac_checkentry(const char *tablename,
- const void *inf,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- /* FORWARD isn't always valid, but it's nice to be able to do --RR */
- if (hook_mask
- & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN)
- | (1 << NF_IP_FORWARD))) {
- printk("xt_mac: only valid for PRE_ROUTING, LOCAL_IN or FORWARD.\n");
- return 0;
- }
-
- if (matchsize != XT_ALIGN(sizeof(struct xt_mac_info)))
- return 0;
-
- return 1;
-}
-
static struct xt_match mac_match = {
.name = "mac",
- .match = &match,
- .checkentry = &ipt_mac_checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_mac_info),
+ .hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) |
+ (1 << NF_IP_FORWARD),
.me = THIS_MODULE,
};
static struct xt_match mac6_match = {
.name = "mac",
- .match = &match,
- .checkentry = &ipt_mac_checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_mac_info),
+ .hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) |
+ (1 << NF_IP_FORWARD),
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c
index 2a0ac62..b21b94a 100644
--- a/net/netfilter/xt_mark.c
+++ b/net/netfilter/xt_mark.c
@@ -42,28 +42,26 @@
{
struct xt_mark_info *minfo = (struct xt_mark_info *) matchinfo;
- if (matchsize != XT_ALIGN(sizeof(struct xt_mark_info)))
- return 0;
-
if (minfo->mark > 0xffffffff || minfo->mask > 0xffffffff) {
printk(KERN_WARNING "mark: only supports 32bit mark\n");
return 0;
}
-
return 1;
}
static struct xt_match mark_match = {
.name = "mark",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_mark_info),
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
static struct xt_match mark6_match = {
.name = "mark",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_mark_info),
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_physdev.c b/net/netfilter/xt_physdev.c
index 19bb57c..5afc417 100644
--- a/net/netfilter/xt_physdev.c
+++ b/net/netfilter/xt_physdev.c
@@ -108,8 +108,6 @@
{
const struct xt_physdev_info *info = matchinfo;
- if (matchsize != XT_ALIGN(sizeof(struct xt_physdev_info)))
- return 0;
if (!(info->bitmask & XT_PHYSDEV_OP_MASK) ||
info->bitmask & ~XT_PHYSDEV_OP_MASK)
return 0;
@@ -118,15 +116,17 @@
static struct xt_match physdev_match = {
.name = "physdev",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_physdev_info),
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
static struct xt_match physdev6_match = {
.name = "physdev",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_physdev_info),
+ .checkentry = checkentry,
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_pkttype.c b/net/netfilter/xt_pkttype.c
index ab1b263..872bb2a 100644
--- a/net/netfilter/xt_pkttype.c
+++ b/net/netfilter/xt_pkttype.c
@@ -32,31 +32,19 @@
return (skb->pkt_type == info->pkttype) ^ info->invert;
}
-static int checkentry(const char *tablename,
- const void *ip,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- if (matchsize != XT_ALIGN(sizeof(struct xt_pkttype_info)))
- return 0;
-
- return 1;
-}
-
static struct xt_match pkttype_match = {
.name = "pkttype",
- .match = &match,
- .checkentry = &checkentry,
- .me = THIS_MODULE,
-};
-static struct xt_match pkttype6_match = {
- .name = "pkttype",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_pkttype_info),
.me = THIS_MODULE,
};
+static struct xt_match pkttype6_match = {
+ .name = "pkttype",
+ .match = match,
+ .matchsize = sizeof(struct xt_pkttype_info),
+ .me = THIS_MODULE,
+};
static int __init init(void)
{
diff --git a/net/netfilter/xt_realm.c b/net/netfilter/xt_realm.c
index 2b7e178..249e0a3 100644
--- a/net/netfilter/xt_realm.c
+++ b/net/netfilter/xt_realm.c
@@ -38,30 +38,12 @@
return (info->id == (dst->tclassid & info->mask)) ^ info->invert;
}
-static int check(const char *tablename,
- const void *ip,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- if (hook_mask
- & ~((1 << NF_IP_POST_ROUTING) | (1 << NF_IP_FORWARD) |
- (1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_LOCAL_IN))) {
- printk("xt_realm: only valid for POST_ROUTING, LOCAL_OUT, "
- "LOCAL_IN or FORWARD.\n");
- return 0;
- }
- if (matchsize != XT_ALIGN(sizeof(struct xt_realm_info))) {
- printk("xt_realm: invalid matchsize.\n");
- return 0;
- }
- return 1;
-}
-
static struct xt_match realm_match = {
.name = "realm",
- .match = match,
- .checkentry = check,
+ .match = match,
+ .matchsize = sizeof(struct xt_realm_info),
+ .hooks = (1 << NF_IP_POST_ROUTING) | (1 << NF_IP_FORWARD) |
+ (1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_LOCAL_IN),
.me = THIS_MODULE
};
diff --git a/net/netfilter/xt_sctp.c b/net/netfilter/xt_sctp.c
index 10fbfc5..f0a25e5 100644
--- a/net/netfilter/xt_sctp.c
+++ b/net/netfilter/xt_sctp.c
@@ -166,15 +166,9 @@
unsigned int matchsize,
unsigned int hook_mask)
{
- const struct xt_sctp_info *info;
- const struct ipt_ip *ip = inf;
+ const struct xt_sctp_info *info = matchinfo;
- info = (const struct xt_sctp_info *)matchinfo;
-
- return ip->proto == IPPROTO_SCTP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_sctp_info))
- && !(info->flags & ~XT_SCTP_VALID_FLAGS)
+ return !(info->flags & ~XT_SCTP_VALID_FLAGS)
&& !(info->invflags & ~XT_SCTP_VALID_FLAGS)
&& !(info->invflags & ~info->flags)
&& ((!(info->flags & XT_SCTP_CHUNK_TYPES)) ||
@@ -184,47 +178,23 @@
| SCTP_CHUNK_MATCH_ONLY)));
}
-static int
-checkentry6(const char *tablename,
- const void *inf,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- const struct xt_sctp_info *info;
- const struct ip6t_ip6 *ip = inf;
-
- info = (const struct xt_sctp_info *)matchinfo;
-
- return ip->proto == IPPROTO_SCTP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_sctp_info))
- && !(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)));
-}
-
-
-static struct xt_match sctp_match =
-{
- .name = "sctp",
- .match = &match,
- .checkentry = &checkentry,
- .me = THIS_MODULE
-};
-static struct xt_match sctp6_match =
-{
- .name = "sctp",
- .match = &match,
- .checkentry = &checkentry6,
- .me = THIS_MODULE
+static struct xt_match sctp_match = {
+ .name = "sctp",
+ .match = match,
+ .matchsize = sizeof(struct xt_sctp_info),
+ .proto = IPPROTO_SCTP,
+ .checkentry = checkentry,
+ .me = THIS_MODULE
};
+static struct xt_match sctp6_match = {
+ .name = "sctp",
+ .match = match,
+ .matchsize = sizeof(struct xt_sctp_info),
+ .proto = IPPROTO_SCTP,
+ .checkentry = checkentry,
+ .me = THIS_MODULE
+};
static int __init init(void)
{
diff --git a/net/netfilter/xt_state.c b/net/netfilter/xt_state.c
index 39ce808..9a7d6df 100644
--- a/net/netfilter/xt_state.c
+++ b/net/netfilter/xt_state.c
@@ -43,29 +43,17 @@
return (sinfo->statemask & statebit);
}
-static int check(const char *tablename,
- const void *ip,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- if (matchsize != XT_ALIGN(sizeof(struct xt_state_info)))
- return 0;
-
- return 1;
-}
-
static struct xt_match state_match = {
.name = "state",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_state_info),
.me = THIS_MODULE,
};
static struct xt_match state6_match = {
.name = "state",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_state_info),
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index 7c7d5c8..c3efd37 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -50,9 +50,6 @@
struct xt_string_info *conf = matchinfo;
struct ts_config *ts_conf;
- if (matchsize != XT_ALIGN(sizeof(struct xt_string_info)))
- return 0;
-
/* Damn, can't handle this case properly with iptables... */
if (conf->from_offset > conf->to_offset)
return 0;
@@ -75,6 +72,7 @@
static struct xt_match string_match = {
.name = "string",
.match = match,
+ .matchsize = sizeof(struct xt_string_info),
.checkentry = checkentry,
.destroy = destroy,
.me = THIS_MODULE
@@ -82,6 +80,7 @@
static struct xt_match string6_match = {
.name = "string",
.match = match,
+ .matchsize = sizeof(struct xt_string_info),
.checkentry = checkentry,
.destroy = destroy,
.me = THIS_MODULE
diff --git a/net/netfilter/xt_tcpmss.c b/net/netfilter/xt_tcpmss.c
index acf7f533..95d8611 100644
--- a/net/netfilter/xt_tcpmss.c
+++ b/net/netfilter/xt_tcpmss.c
@@ -92,58 +92,19 @@
info->invert, hotdrop);
}
-static int
-checkentry(const char *tablename,
- const void *ipinfo,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- const struct ipt_ip *ip = ipinfo;
- if (matchsize != XT_ALIGN(sizeof(struct xt_tcpmss_match_info)))
- return 0;
-
- /* Must specify -p tcp */
- if (ip->proto != IPPROTO_TCP || (ip->invflags & IPT_INV_PROTO)) {
- printk("tcpmss: Only works on TCP packets\n");
- return 0;
- }
-
- return 1;
-}
-
-static int
-checkentry6(const char *tablename,
- const void *ipinfo,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- const struct ip6t_ip6 *ip = ipinfo;
-
- if (matchsize != XT_ALIGN(sizeof(struct xt_tcpmss_match_info)))
- return 0;
-
- /* Must specify -p tcp */
- if (ip->proto != IPPROTO_TCP || (ip->invflags & XT_INV_PROTO)) {
- printk("tcpmss: Only works on TCP packets\n");
- return 0;
- }
-
- return 1;
-}
-
static struct xt_match tcpmss_match = {
.name = "tcpmss",
- .match = &match,
- .checkentry = &checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_tcpmss_match_info),
+ .proto = IPPROTO_TCP,
.me = THIS_MODULE,
};
static struct xt_match tcpmss6_match = {
.name = "tcpmss",
- .match = &match,
- .checkentry = &checkentry6,
+ .match = match,
+ .matchsize = sizeof(struct xt_tcpmss_match_info),
+ .proto = IPPROTO_TCP,
.me = THIS_MODULE,
};
diff --git a/net/netfilter/xt_tcpudp.c b/net/netfilter/xt_tcpudp.c
index 669c811..9d01f07 100644
--- a/net/netfilter/xt_tcpudp.c
+++ b/net/netfilter/xt_tcpudp.c
@@ -142,35 +142,12 @@
unsigned int matchsize,
unsigned int hook_mask)
{
- const struct ipt_ip *ip = info;
const struct xt_tcp *tcpinfo = matchinfo;
- /* Must specify proto == TCP, and no unknown invflags */
- return ip->proto == IPPROTO_TCP
- && !(ip->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_tcp))
- && !(tcpinfo->invflags & ~XT_TCP_INV_MASK);
+ /* Must specify no unknown invflags */
+ return !(tcpinfo->invflags & ~XT_TCP_INV_MASK);
}
-/* Called when user tries to insert an entry of this type. */
-static int
-tcp6_checkentry(const char *tablename,
- const void *entry,
- void *matchinfo,
- unsigned int matchsize,
- unsigned int hook_mask)
-{
- const struct ip6t_ip6 *ipv6 = entry;
- const struct xt_tcp *tcpinfo = matchinfo;
-
- /* Must specify proto == TCP, and no unknown invflags */
- return ipv6->proto == IPPROTO_TCP
- && !(ipv6->invflags & XT_INV_PROTO)
- && matchsize == XT_ALIGN(sizeof(struct xt_tcp))
- && !(tcpinfo->invflags & ~XT_TCP_INV_MASK);
-}
-
-
static int
udp_match(const struct sk_buff *skb,
const struct net_device *in,
@@ -209,86 +186,47 @@
udp_checkentry(const char *tablename,
const void *info,
void *matchinfo,
- unsigned int matchinfosize,
+ unsigned int matchsize,
unsigned int hook_mask)
{
- const struct ipt_ip *ip = info;
- const struct xt_udp *udpinfo = matchinfo;
+ const struct xt_tcp *udpinfo = matchinfo;
- /* Must specify proto == UDP, and no unknown invflags */
- if (ip->proto != IPPROTO_UDP || (ip->invflags & XT_INV_PROTO)) {
- duprintf("ipt_udp: Protocol %u != %u\n", ip->proto,
- IPPROTO_UDP);
- return 0;
- }
- if (matchinfosize != XT_ALIGN(sizeof(struct xt_udp))) {
- duprintf("ipt_udp: matchsize %u != %u\n",
- matchinfosize, XT_ALIGN(sizeof(struct xt_udp)));
- return 0;
- }
- if (udpinfo->invflags & ~XT_UDP_INV_MASK) {
- duprintf("ipt_udp: unknown flags %X\n",
- udpinfo->invflags);
- return 0;
- }
-
- return 1;
-}
-
-/* Called when user tries to insert an entry of this type. */
-static int
-udp6_checkentry(const char *tablename,
- const void *entry,
- void *matchinfo,
- unsigned int matchinfosize,
- unsigned int hook_mask)
-{
- const struct ip6t_ip6 *ipv6 = entry;
- const struct xt_udp *udpinfo = matchinfo;
-
- /* Must specify proto == UDP, and no unknown invflags */
- if (ipv6->proto != IPPROTO_UDP || (ipv6->invflags & XT_INV_PROTO)) {
- duprintf("ip6t_udp: Protocol %u != %u\n", ipv6->proto,
- IPPROTO_UDP);
- return 0;
- }
- if (matchinfosize != XT_ALIGN(sizeof(struct xt_udp))) {
- duprintf("ip6t_udp: matchsize %u != %u\n",
- matchinfosize, XT_ALIGN(sizeof(struct xt_udp)));
- return 0;
- }
- if (udpinfo->invflags & ~XT_UDP_INV_MASK) {
- duprintf("ip6t_udp: unknown flags %X\n",
- udpinfo->invflags);
- return 0;
- }
-
- return 1;
+ /* Must specify no unknown invflags */
+ return !(udpinfo->invflags & ~XT_UDP_INV_MASK);
}
static struct xt_match tcp_matchstruct = {
.name = "tcp",
- .match = &tcp_match,
- .checkentry = &tcp_checkentry,
+ .match = tcp_match,
+ .matchsize = sizeof(struct xt_tcp),
+ .proto = IPPROTO_TCP,
+ .checkentry = tcp_checkentry,
.me = THIS_MODULE,
};
+
static struct xt_match tcp6_matchstruct = {
.name = "tcp",
- .match = &tcp_match,
- .checkentry = &tcp6_checkentry,
+ .match = tcp_match,
+ .matchsize = sizeof(struct xt_tcp),
+ .proto = IPPROTO_TCP,
+ .checkentry = tcp_checkentry,
.me = THIS_MODULE,
};
static struct xt_match udp_matchstruct = {
.name = "udp",
- .match = &udp_match,
- .checkentry = &udp_checkentry,
+ .match = udp_match,
+ .matchsize = sizeof(struct xt_udp),
+ .proto = IPPROTO_UDP,
+ .checkentry = udp_checkentry,
.me = THIS_MODULE,
};
static struct xt_match udp6_matchstruct = {
.name = "udp",
- .match = &udp_match,
- .checkentry = &udp6_checkentry,
+ .match = udp_match,
+ .matchsize = sizeof(struct xt_udp),
+ .proto = IPPROTO_UDP,
+ .checkentry = udp_checkentry,
.me = THIS_MODULE,
};