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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 07:55:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 07:55:01 -0800
commitd7fc02c7bae7b1cf69269992cf880a43a350cdaa (patch)
treea43d56fa72913a1cc98a0bbebe054d08581b3a7c /net/netfilter/xt_conntrack.c
parentee1262dbc65ce0b6234a915d8432171e8d77f518 (diff)
parent28b4d5cc17c20786848cdc07b7ea237a309776bb (diff)
downloadop-kernel-dev-d7fc02c7bae7b1cf69269992cf880a43a350cdaa.zip
op-kernel-dev-d7fc02c7bae7b1cf69269992cf880a43a350cdaa.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1815 commits) mac80211: fix reorder buffer release iwmc3200wifi: Enable wimax core through module parameter iwmc3200wifi: Add wifi-wimax coexistence mode as a module parameter iwmc3200wifi: Coex table command does not expect a response iwmc3200wifi: Update wiwi priority table iwlwifi: driver version track kernel version iwlwifi: indicate uCode type when fail dump error/event log iwl3945: remove duplicated event logging code b43: fix two warnings ipw2100: fix rebooting hang with driver loaded cfg80211: indent regulatory messages with spaces iwmc3200wifi: fix NULL pointer dereference in pmkid update mac80211: Fix TX status reporting for injected data frames ath9k: enable 2GHz band only if the device supports it airo: Fix integer overflow warning rt2x00: Fix padding bug on L2PAD devices. WE: Fix set events not propagated b43legacy: avoid PPC fault during resume b43: avoid PPC fault during resume tcp: fix a timewait refcnt race ... Fix up conflicts due to sysctl cleanups (dead sysctl_check code and CTL_UNNUMBERED removed) in kernel/sysctl_check.c net/ipv4/sysctl_net_ipv4.c net/ipv6/addrconf.c net/sctp/sysctl.c
Diffstat (limited to 'net/netfilter/xt_conntrack.c')
-rw-r--r--net/netfilter/xt_conntrack.c61
1 files changed, 17 insertions, 44 deletions
diff --git a/net/netfilter/xt_conntrack.c b/net/netfilter/xt_conntrack.c
index 6dc4652..ae66305 100644
--- a/net/netfilter/xt_conntrack.c
+++ b/net/netfilter/xt_conntrack.c
@@ -113,7 +113,8 @@ ct_proto_port_check(const struct xt_conntrack_mtinfo2 *info,
}
static bool
-conntrack_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+conntrack_mt(const struct sk_buff *skb, const struct xt_match_param *par,
+ u16 state_mask, u16 status_mask)
{
const struct xt_conntrack_mtinfo2 *info = par->matchinfo;
enum ip_conntrack_info ctinfo;
@@ -136,7 +137,7 @@ conntrack_mt(const struct sk_buff *skb, const struct xt_match_param *par)
if (test_bit(IPS_DST_NAT_BIT, &ct->status))
statebit |= XT_CONNTRACK_STATE_DNAT;
}
- if (!!(info->state_mask & statebit) ^
+ if (!!(state_mask & statebit) ^
!(info->invert_flags & XT_CONNTRACK_STATE))
return false;
}
@@ -172,7 +173,7 @@ conntrack_mt(const struct sk_buff *skb, const struct xt_match_param *par)
return false;
if ((info->match_flags & XT_CONNTRACK_STATUS) &&
- (!!(info->status_mask & ct->status) ^
+ (!!(status_mask & ct->status) ^
!(info->invert_flags & XT_CONNTRACK_STATUS)))
return false;
@@ -192,11 +193,17 @@ conntrack_mt(const struct sk_buff *skb, const struct xt_match_param *par)
static bool
conntrack_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
{
- const struct xt_conntrack_mtinfo2 *const *info = par->matchinfo;
- struct xt_match_param newpar = *par;
+ const struct xt_conntrack_mtinfo1 *info = par->matchinfo;
- newpar.matchinfo = *info;
- return conntrack_mt(skb, &newpar);
+ return conntrack_mt(skb, par, info->state_mask, info->status_mask);
+}
+
+static bool
+conntrack_mt_v2(const struct sk_buff *skb, const struct xt_match_param *par)
+{
+ const struct xt_conntrack_mtinfo2 *info = par->matchinfo;
+
+ return conntrack_mt(skb, par, info->state_mask, info->status_mask);
}
static bool conntrack_mt_check(const struct xt_mtchk_param *par)
@@ -209,45 +216,11 @@ static bool conntrack_mt_check(const struct xt_mtchk_param *par)
return true;
}
-static bool conntrack_mt_check_v1(const struct xt_mtchk_param *par)
-{
- struct xt_conntrack_mtinfo1 *info = par->matchinfo;
- struct xt_conntrack_mtinfo2 *up;
- int ret = conntrack_mt_check(par);
-
- if (ret < 0)
- return ret;
-
- up = kmalloc(sizeof(*up), GFP_KERNEL);
- if (up == NULL) {
- nf_ct_l3proto_module_put(par->family);
- return -ENOMEM;
- }
-
- /*
- * The strategy here is to minimize the overhead of v1 matching,
- * by prebuilding a v2 struct and putting the pointer into the
- * v1 dataspace.
- */
- memcpy(up, info, offsetof(typeof(*info), state_mask));
- up->state_mask = info->state_mask;
- up->status_mask = info->status_mask;
- *(void **)info = up;
- return true;
-}
-
static void conntrack_mt_destroy(const struct xt_mtdtor_param *par)
{
nf_ct_l3proto_module_put(par->family);
}
-static void conntrack_mt_destroy_v1(const struct xt_mtdtor_param *par)
-{
- struct xt_conntrack_mtinfo2 **info = par->matchinfo;
- kfree(*info);
- conntrack_mt_destroy(par);
-}
-
static struct xt_match conntrack_mt_reg[] __read_mostly = {
{
.name = "conntrack",
@@ -255,8 +228,8 @@ static struct xt_match conntrack_mt_reg[] __read_mostly = {
.family = NFPROTO_UNSPEC,
.matchsize = sizeof(struct xt_conntrack_mtinfo1),
.match = conntrack_mt_v1,
- .checkentry = conntrack_mt_check_v1,
- .destroy = conntrack_mt_destroy_v1,
+ .checkentry = conntrack_mt_check,
+ .destroy = conntrack_mt_destroy,
.me = THIS_MODULE,
},
{
@@ -264,7 +237,7 @@ static struct xt_match conntrack_mt_reg[] __read_mostly = {
.revision = 2,
.family = NFPROTO_UNSPEC,
.matchsize = sizeof(struct xt_conntrack_mtinfo2),
- .match = conntrack_mt,
+ .match = conntrack_mt_v2,
.checkentry = conntrack_mt_check,
.destroy = conntrack_mt_destroy,
.me = THIS_MODULE,
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