[NETFILTER]: nf_queue: move list_head/skb/id to struct nf_info
Move common fields for queue management to struct nf_info and rename it
to struct nf_queue_entry. The avoids one allocation/free per packet and
simplifies the code a bit.
Alternatively we could add some private room at the tail, but since
all current users use identical structs this seems easier.
Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
---
commit 9522be669a4499574be6df2228b6bd6e8d77b037
tree 970b62e1799f15fae7077fe8d756f89901ed8b5f
parent e7a1b1cd873707620365c477874645736b9388a6
author Patrick McHardy <kaber@xxxxxxxxx> Tue, 04 Dec 2007 10:47:51 +0100
committer Patrick McHardy <kaber@xxxxxxxxx> Tue, 04 Dec 2007 12:37:27 +0100
include/linux/netfilter.h | 6 ++-
include/net/netfilter/nf_queue.h | 14 ++++---
net/ipv4/netfilter.c | 14 ++++---
net/ipv4/netfilter/ip_queue.c | 68 ++++++++++++-----------------------
net/ipv6/netfilter.c | 14 ++++---
net/ipv6/netfilter/ip6_queue.c | 67 ++++++++++++----------------------
net/netfilter/nf_queue.c | 65 ++++++++++++++++++---------------
net/netfilter/nfnetlink_queue.c | 74 ++++++++++++--------------------------
8 files changed, 132 insertions(+), 190 deletions(-)
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 5fe4ef4..f25eec5 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -270,7 +270,7 @@ extern void nf_invalidate_cache(int pf);
extern int skb_make_writable(struct sk_buff *skb, unsigned int writable_len);
struct flowi;
-struct nf_info;
+struct nf_queue_entry;
struct nf_afinfo {
unsigned short family;
@@ -278,9 +278,9 @@ struct nf_afinfo {
unsigned int dataoff, u_int8_t protocol);
int (*route)(struct dst_entry **dst, struct flowi *fl);
void (*saveroute)(const struct sk_buff *skb,
- struct nf_info *info);
+ struct nf_queue_entry *entry);
int (*reroute)(struct sk_buff *skb,
- const struct nf_info *info);
+ const struct nf_queue_entry *entry);
int route_key_size;
};
diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
index 8c6b382..d030044 100644
--- a/include/net/netfilter/nf_queue.h
+++ b/include/net/netfilter/nf_queue.h
@@ -2,7 +2,11 @@
#define _NF_QUEUE_H
/* Each queued (to userspace) skbuff has one of these. */
-struct nf_info {
+struct nf_queue_entry {
+ struct list_head list;
+ struct sk_buff *skb;
+ unsigned int id;
+
struct nf_hook_ops *elem;
int pf;
unsigned int hook;
@@ -11,12 +15,11 @@ struct nf_info {
int (*okfn)(struct sk_buff *);
};
-#define nf_info_reroute(x) ((void *)x + sizeof(struct nf_info))
+#define nf_queue_entry_reroute(x) ((void *)x + sizeof(struct nf_queue_entry))
/* Packet queuing */
struct nf_queue_handler {
- int (*outfn)(struct sk_buff *skb,
- struct nf_info *info,
+ int (*outfn)(struct nf_queue_entry *entry,
unsigned int queuenum);
char *name;
};
@@ -26,7 +29,6 @@ extern int nf_register_queue_handler(int pf,
extern int nf_unregister_queue_handler(int pf,
const struct nf_queue_handler *qh);
extern void nf_unregister_queue_handlers(const struct nf_queue_handler *qh);
-extern void nf_reinject(struct sk_buff *skb, struct nf_info *info,
- unsigned int verdict);
+extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);
#endif /* _NF_QUEUE_H */
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index f716608..7bf5e4a 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -123,11 +123,12 @@ struct ip_rt_info {
u_int8_t tos;
};
-static void nf_ip_saveroute(const struct sk_buff *skb, struct nf_info *info)
+static void nf_ip_saveroute(const struct sk_buff *skb,
+ struct nf_queue_entry *entry)
{
- struct ip_rt_info *rt_info = nf_info_reroute(info);
+ struct ip_rt_info *rt_info = nf_queue_entry_reroute(entry);
- if (info->hook == NF_INET_LOCAL_OUT) {
+ if (entry->hook == NF_INET_LOCAL_OUT) {
const struct iphdr *iph = ip_hdr(skb);
rt_info->tos = iph->tos;
@@ -136,11 +137,12 @@ static void nf_ip_saveroute(const struct sk_buff *skb, struct nf_info *info)
}
}
-static int nf_ip_reroute(struct sk_buff *skb, const struct nf_info *info)
+static int nf_ip_reroute(struct sk_buff *skb,
+ const struct nf_queue_entry *entry)
{
- const struct ip_rt_info *rt_info = nf_info_reroute(info);
+ const struct ip_rt_info *rt_info = nf_queue_entry_reroute(entry);
- if (info->hook == NF_INET_LOCAL_OUT) {
+ if (entry->hook == NF_INET_LOCAL_OUT) {
const struct iphdr *iph = ip_hdr(skb);
if (!(iph->tos == rt_info->tos
diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index df2957c..f1affd2 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -35,13 +35,7 @@
#define NET_IPQ_QMAX 2088
#define NET_IPQ_QMAX_NAME "ip_queue_maxlen"
-struct ipq_queue_entry {
- struct list_head list;
- struct nf_info *info;
- struct sk_buff *skb;
-};
-
-typedef int (*ipq_cmpfn)(struct ipq_queue_entry *, unsigned long);
+typedef int (*ipq_cmpfn)(struct nf_queue_entry *, unsigned long);
static unsigned char copy_mode __read_mostly = IPQ_COPY_NONE;
static unsigned int queue_maxlen __read_mostly = IPQ_QMAX_DEFAULT;
@@ -56,7 +50,7 @@ static LIST_HEAD(queue_list);
static DEFINE_MUTEX(ipqnl_mutex);
static void
-ipq_issue_verdict(struct ipq_queue_entry *entry, int verdict)
+ipq_issue_verdict(struct nf_queue_entry *entry, int verdict)
{
/* TCP input path (and probably other bits) assume to be called
* from softirq context, not from syscall, like ipq_issue_verdict is
@@ -64,14 +58,12 @@ ipq_issue_verdict(struct ipq_queue_entry *entry, int verdict)
* softirq, e.g. We therefore emulate this by local_bh_disable() */
local_bh_disable();
- nf_reinject(entry->skb, entry->info, verdict);
+ nf_reinject(entry, verdict);
local_bh_enable();
-
- kfree(entry);
}
static inline void
-__ipq_enqueue_entry(struct ipq_queue_entry *entry)
+__ipq_enqueue_entry(struct nf_queue_entry *entry)
{
list_add_tail(&entry->list, &queue_list);
queue_total++;
@@ -114,10 +106,10 @@ __ipq_reset(void)
__ipq_flush(NULL, 0);
}
-static struct ipq_queue_entry *
+static struct nf_queue_entry *
ipq_find_dequeue_entry(unsigned long id)
{
- struct ipq_queue_entry *entry = NULL, *i;
+ struct nf_queue_entry *entry = NULL, *i;
write_lock_bh(&queue_lock);
@@ -140,7 +132,7 @@ ipq_find_dequeue_entry(unsigned long id)
static void
__ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
{
- struct ipq_queue_entry *entry, *next;
+ struct nf_queue_entry *entry, *next;
list_for_each_entry_safe(entry, next, &queue_list, list) {
if (!cmpfn || cmpfn(entry, data)) {
@@ -160,7 +152,7 @@ ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
}
static struct sk_buff *
-ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
+ipq_build_packet_message(struct nf_queue_entry *entry, int *errp)
{
sk_buff_data_t old_tail;
size_t size = 0;
@@ -217,20 +209,20 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
pmsg->timestamp_sec = tv.tv_sec;
pmsg->timestamp_usec = tv.tv_usec;
pmsg->mark = entry->skb->mark;
- pmsg->hook = entry->info->hook;
+ pmsg->hook = entry->hook;
pmsg->hw_protocol = entry->skb->protocol;
- if (entry->info->indev)
- strcpy(pmsg->indev_name, entry->info->indev->name);
+ if (entry->indev)
+ strcpy(pmsg->indev_name, entry->indev->name);
else
pmsg->indev_name[0] = '\0';
- if (entry->info->outdev)
- strcpy(pmsg->outdev_name, entry->info->outdev->name);
+ if (entry->outdev)
+ strcpy(pmsg->outdev_name, entry->outdev->name);
else
pmsg->outdev_name[0] = '\0';
- if (entry->info->indev && entry->skb->dev) {
+ if (entry->indev && entry->skb->dev) {
pmsg->hw_type = entry->skb->dev->type;
pmsg->hw_addrlen = dev_parse_header(entry->skb,
pmsg->hw_addr);
@@ -252,28 +244,17 @@ nlmsg_failure:
}
static int
-ipq_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
- unsigned int queuenum)
+ipq_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
{
int status = -EINVAL;
struct sk_buff *nskb;
- struct ipq_queue_entry *entry;
if (copy_mode == IPQ_COPY_NONE)
return -EAGAIN;
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (entry == NULL) {
- printk(KERN_ERR "ip_queue: OOM in ipq_enqueue_packet()\n");
- return -ENOMEM;
- }
-
- entry->info = info;
- entry->skb = skb;
-
nskb = ipq_build_packet_message(entry, &status);
if (nskb == NULL)
- goto err_out_free;
+ return status;
write_lock_bh(&queue_lock);
@@ -307,14 +288,11 @@ err_out_free_nskb:
err_out_unlock:
write_unlock_bh(&queue_lock);
-
-err_out_free:
- kfree(entry);
return status;
}
static int
-ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
+ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct nf_queue_entry *e)
{
int diff;
int err;
@@ -352,7 +330,7 @@ ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
static int
ipq_set_verdict(struct ipq_verdict_msg *vmsg, unsigned int len)
{
- struct ipq_queue_entry *entry;
+ struct nf_queue_entry *entry;
if (vmsg->value > NF_MAX_VERDICT)
return -EINVAL;
@@ -412,13 +390,13 @@ ipq_receive_peer(struct ipq_peer_msg *pmsg,
}
static int
-dev_cmp(struct ipq_queue_entry *entry, unsigned long ifindex)
+dev_cmp(struct nf_queue_entry *entry, unsigned long ifindex)
{
- if (entry->info->indev)
- if (entry->info->indev->ifindex == ifindex)
+ if (entry->indev)
+ if (entry->indev->ifindex == ifindex)
return 1;
- if (entry->info->outdev)
- if (entry->info->outdev->ifindex == ifindex)
+ if (entry->outdev)
+ if (entry->outdev->ifindex == ifindex)
return 1;
#ifdef CONFIG_BRIDGE_NETFILTER
if (entry->skb->nf_bridge) {
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 55ea9c6..945e6ae 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -57,11 +57,12 @@ struct ip6_rt_info {
struct in6_addr saddr;
};
-static void nf_ip6_saveroute(const struct sk_buff *skb, struct nf_info *info)
+static void nf_ip6_saveroute(const struct sk_buff *skb,
+ struct nf_queue_entry *entry)
{
- struct ip6_rt_info *rt_info = nf_info_reroute(info);
+ struct ip6_rt_info *rt_info = nf_queue_entry_reroute(entry);
- if (info->hook == NF_INET_LOCAL_OUT) {
+ if (entry->hook == NF_INET_LOCAL_OUT) {
struct ipv6hdr *iph = ipv6_hdr(skb);
rt_info->daddr = iph->daddr;
@@ -69,11 +70,12 @@ static void nf_ip6_saveroute(const struct sk_buff *skb, struct nf_info *info)
}
}
-static int nf_ip6_reroute(struct sk_buff *skb, const struct nf_info *info)
+static int nf_ip6_reroute(struct sk_buff *skb,
+ const struct nf_queue_entry *entry)
{
- struct ip6_rt_info *rt_info = nf_info_reroute(info);
+ struct ip6_rt_info *rt_info = nf_queue_entry_reroute(entry);
- if (info->hook == NF_INET_LOCAL_OUT) {
+ if (entry->hook == NF_INET_LOCAL_OUT) {
struct ipv6hdr *iph = ipv6_hdr(skb);
if (!ipv6_addr_equal(&iph->daddr, &rt_info->daddr) ||
!ipv6_addr_equal(&iph->saddr, &rt_info->saddr))
diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index 9c50cb1..9014ada 100644
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -39,13 +39,7 @@
#define NET_IPQ_QMAX 2088
#define NET_IPQ_QMAX_NAME "ip6_queue_maxlen"
-struct ipq_queue_entry {
- struct list_head list;
- struct nf_info *info;
- struct sk_buff *skb;
-};
-
-typedef int (*ipq_cmpfn)(struct ipq_queue_entry *, unsigned long);
+typedef int (*ipq_cmpfn)(struct nf_queue_entry *, unsigned long);
static unsigned char copy_mode __read_mostly = IPQ_COPY_NONE;
static unsigned int queue_maxlen __read_mostly = IPQ_QMAX_DEFAULT;
@@ -60,16 +54,15 @@ static LIST_HEAD(queue_list);
static DEFINE_MUTEX(ipqnl_mutex);
static void
-ipq_issue_verdict(struct ipq_queue_entry *entry, int verdict)
+ipq_issue_verdict(struct nf_queue_entry *entry, int verdict)
{
local_bh_disable();
- nf_reinject(entry->skb, entry->info, verdict);
+ nf_reinject(entry, verdict);
local_bh_enable();
- kfree(entry);
}
static inline void
-__ipq_enqueue_entry(struct ipq_queue_entry *entry)
+__ipq_enqueue_entry(struct nf_queue_entry *entry)
{
list_add_tail(&entry->list, &queue_list);
queue_total++;
@@ -112,10 +105,10 @@ __ipq_reset(void)
__ipq_flush(NULL, 0);
}
-static struct ipq_queue_entry *
+static struct nf_queue_entry *
ipq_find_dequeue_entry(unsigned long id)
{
- struct ipq_queue_entry *entry = NULL, *i;
+ struct nf_queue_entry *entry = NULL, *i;
write_lock_bh(&queue_lock);
@@ -138,7 +131,7 @@ ipq_find_dequeue_entry(unsigned long id)
static void
__ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
{
- struct ipq_queue_entry *entry, *next;
+ struct nf_queue_entry *entry, *next;
list_for_each_entry_safe(entry, next, &queue_list, list) {
if (!cmpfn || cmpfn(entry, data)) {
@@ -158,7 +151,7 @@ ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
}
static struct sk_buff *
-ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
+ipq_build_packet_message(struct nf_queue_entry *entry, int *errp)
{
sk_buff_data_t old_tail;
size_t size = 0;
@@ -215,20 +208,20 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
pmsg->timestamp_sec = tv.tv_sec;
pmsg->timestamp_usec = tv.tv_usec;
pmsg->mark = entry->skb->mark;
- pmsg->hook = entry->info->hook;
+ pmsg->hook = entry->hook;
pmsg->hw_protocol = entry->skb->protocol;
- if (entry->info->indev)
- strcpy(pmsg->indev_name, entry->info->indev->name);
+ if (entry->indev)
+ strcpy(pmsg->indev_name, entry->indev->name);
else
pmsg->indev_name[0] = '\0';
- if (entry->info->outdev)
- strcpy(pmsg->outdev_name, entry->info->outdev->name);
+ if (entry->outdev)
+ strcpy(pmsg->outdev_name, entry->outdev->name);
else
pmsg->outdev_name[0] = '\0';
- if (entry->info->indev && entry->skb->dev) {
+ if (entry->indev && entry->skb->dev) {
pmsg->hw_type = entry->skb->dev->type;
pmsg->hw_addrlen = dev_parse_header(entry->skb, pmsg->hw_addr);
}
@@ -249,28 +242,17 @@ nlmsg_failure:
}
static int
-ipq_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
- unsigned int queuenum)
+ipq_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
{
int status = -EINVAL;
struct sk_buff *nskb;
- struct ipq_queue_entry *entry;
if (copy_mode == IPQ_COPY_NONE)
return -EAGAIN;
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (entry == NULL) {
- printk(KERN_ERR "ip6_queue: OOM in ipq_enqueue_packet()\n");
- return -ENOMEM;
- }
-
- entry->info = info;
- entry->skb = skb;
-
nskb = ipq_build_packet_message(entry, &status);
if (nskb == NULL)
- goto err_out_free;
+ return status;
write_lock_bh(&queue_lock);
@@ -304,14 +286,11 @@ err_out_free_nskb:
err_out_unlock:
write_unlock_bh(&queue_lock);
-
-err_out_free:
- kfree(entry);
return status;
}
static int
-ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
+ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct nf_queue_entry *e)
{
int diff;
int err;
@@ -349,7 +328,7 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
static int
ipq_set_verdict(struct ipq_verdict_msg *vmsg, unsigned int len)
{
- struct ipq_queue_entry *entry;
+ struct nf_queue_entry *entry;
if (vmsg->value > NF_MAX_VERDICT)
return -EINVAL;
@@ -409,14 +388,14 @@ ipq_receive_peer(struct ipq_peer_msg *pmsg,
}
static int
-dev_cmp(struct ipq_queue_entry *entry, unsigned long ifindex)
+dev_cmp(struct nf_queue_entry *entry, unsigned long ifindex)
{
- if (entry->info->indev)
- if (entry->info->indev->ifindex == ifindex)
+ if (entry->indev)
+ if (entry->indev->ifindex == ifindex)
return 1;
- if (entry->info->outdev)
- if (entry->info->outdev->ifindex == ifindex)
+ if (entry->outdev)
+ if (entry->outdev->ifindex == ifindex)
return 1;
#ifdef CONFIG_BRIDGE_NETFILTER
if (entry->skb->nf_bridge) {
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index bd71f43..d9d3dc4 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -93,7 +93,7 @@ static int __nf_queue(struct sk_buff *skb,
unsigned int queuenum)
{
int status;
- struct nf_info *info;
+ struct nf_queue_entry *entry;
#ifdef CONFIG_BRIDGE_NETFILTER
struct net_device *physindev = NULL;
struct net_device *physoutdev = NULL;
@@ -118,8 +118,8 @@ static int __nf_queue(struct sk_buff *skb,
return 1;
}
- info = kmalloc(sizeof(*info) + afinfo->route_key_size, GFP_ATOMIC);
- if (!info) {
+ entry = kmalloc(sizeof(*entry) + afinfo->route_key_size, GFP_ATOMIC);
+ if (!entry) {
if (net_ratelimit())
printk(KERN_ERR "OOM queueing packet %p\n",
skb);
@@ -128,13 +128,20 @@ static int __nf_queue(struct sk_buff *skb,
return 1;
}
- *info = (struct nf_info) {
- (struct nf_hook_ops *)elem, pf, hook, indev, outdev, okfn };
+ *entry = (struct nf_queue_entry) {
+ .skb = skb,
+ .elem = list_entry(elem, struct nf_hook_ops, list),
+ .pf = pf,
+ .hook = hook,
+ .indev = indev,
+ .outdev = outdev,
+ .okfn = okfn,
+ };
/* If it's going away, ignore hook. */
- if (!try_module_get(info->elem->owner)) {
+ if (!try_module_get(entry->elem->owner)) {
rcu_read_unlock();
- kfree(info);
+ kfree(entry);
return 0;
}
@@ -153,8 +160,8 @@ static int __nf_queue(struct sk_buff *skb,
dev_hold(physoutdev);
}
#endif
- afinfo->saveroute(skb, info);
- status = qh->outfn(skb, info, queuenum);
+ afinfo->saveroute(skb, entry);
+ status = qh->outfn(entry, queuenum);
rcu_read_unlock();
@@ -170,8 +177,8 @@ static int __nf_queue(struct sk_buff *skb,
if (physoutdev)
dev_put(physoutdev);
#endif
- module_put(info->elem->owner);
- kfree(info);
+ module_put(entry->elem->owner);
+ kfree(entry);
kfree_skb(skb);
return 1;
@@ -220,19 +227,19 @@ int nf_queue(struct sk_buff *skb,
return 1;
}
-void nf_reinject(struct sk_buff *skb, struct nf_info *info,
- unsigned int verdict)
+void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
{
- struct list_head *elem = &info->elem->list;
+ struct sk_buff *skb = entry->skb;
+ struct list_head *elem = &entry->elem->list;
struct nf_afinfo *afinfo;
rcu_read_lock();
/* Release those devices we held, or Alexey will kill me. */
- if (info->indev)
- dev_put(info->indev);
- if (info->outdev)
- dev_put(info->outdev);
+ if (entry->indev)
+ dev_put(entry->indev);
+ if (entry->outdev)
+ dev_put(entry->outdev);
#ifdef CONFIG_BRIDGE_NETFILTER
if (skb->nf_bridge) {
if (skb->nf_bridge->physindev)
@@ -243,7 +250,7 @@ void nf_reinject(struct sk_buff *skb, struct nf_info *info,
#endif
/* Drop reference to owner of hook which queued us. */
- module_put(info->elem->owner);
+ module_put(entry->elem->owner);
/* Continue traversal iff userspace said ok... */
if (verdict == NF_REPEAT) {
@@ -252,28 +259,28 @@ void nf_reinject(struct sk_buff *skb, struct nf_info *info,
}
if (verdict == NF_ACCEPT) {
- afinfo = nf_get_afinfo(info->pf);
- if (!afinfo || afinfo->reroute(skb, info) < 0)
+ afinfo = nf_get_afinfo(entry->pf);
+ if (!afinfo || afinfo->reroute(skb, entry) < 0)
verdict = NF_DROP;
}
if (verdict == NF_ACCEPT) {
next_hook:
- verdict = nf_iterate(&nf_hooks[info->pf][info->hook],
- skb, info->hook,
- info->indev, info->outdev, &elem,
- info->okfn, INT_MIN);
+ verdict = nf_iterate(&nf_hooks[entry->pf][entry->hook],
+ skb, entry->hook,
+ entry->indev, entry->outdev, &elem,
+ entry->okfn, INT_MIN);
}
switch (verdict & NF_VERDICT_MASK) {
case NF_ACCEPT:
case NF_STOP:
- info->okfn(skb);
+ entry->okfn(skb);
case NF_STOLEN:
break;
case NF_QUEUE:
- if (!__nf_queue(skb, elem, info->pf, info->hook,
- info->indev, info->outdev, info->okfn,
+ if (!__nf_queue(skb, elem, entry->pf, entry->hook,
+ entry->indev, entry->outdev, entry->okfn,
verdict >> NF_VERDICT_BITS))
goto next_hook;
break;
@@ -281,7 +288,7 @@ void nf_reinject(struct sk_buff *skb, struct nf_info *info,
kfree_skb(skb);
}
rcu_read_unlock();
- kfree(info);
+ kfree(entry);
return;
}
EXPORT_SYMBOL(nf_reinject);
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index cb901cf..a493764 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -45,13 +45,6 @@
#define QDEBUG(x, ...)
#endif
-struct nfqnl_queue_entry {
- struct list_head list;
- struct nf_info *info;
- struct sk_buff *skb;
- unsigned int id;
-};
-
struct nfqnl_instance {
struct hlist_node hlist; /* global list of queues */
atomic_t use;
@@ -73,7 +66,7 @@ struct nfqnl_instance {
struct list_head queue_list; /* packets in queue */
};
-typedef int (*nfqnl_cmpfn)(struct nfqnl_queue_entry *, unsigned long);
+typedef int (*nfqnl_cmpfn)(struct nf_queue_entry *, unsigned long);
static DEFINE_RWLOCK(instances_lock);
@@ -212,7 +205,7 @@ instance_destroy(struct nfqnl_instance *inst)
static void
-issue_verdict(struct nfqnl_queue_entry *entry, int verdict)
+issue_verdict(struct nf_queue_entry *entry, int verdict)
{
QDEBUG("entering for entry %p, verdict %u\n", entry, verdict);
@@ -222,15 +215,12 @@ issue_verdict(struct nfqnl_queue_entry *entry, int verdict)
* softirq, e.g. We therefore emulate this by local_bh_disable() */
local_bh_disable();
- nf_reinject(entry->skb, entry->info, verdict);
+ nf_reinject(entry, verdict);
local_bh_enable();
-
- kfree(entry);
}
static inline void
-__enqueue_entry(struct nfqnl_instance *queue,
- struct nfqnl_queue_entry *entry)
+__enqueue_entry(struct nfqnl_instance *queue, struct nf_queue_entry *entry)
{
list_add_tail(&entry->list, &queue->queue_list);
queue->queue_total++;
@@ -265,10 +255,10 @@ __nfqnl_set_mode(struct nfqnl_instance *queue,
return status;
}
-static struct nfqnl_queue_entry *
+static struct nf_queue_entry *
find_dequeue_entry(struct nfqnl_instance *queue, unsigned int id)
{
- struct nfqnl_queue_entry *entry = NULL, *i;
+ struct nf_queue_entry *entry = NULL, *i;
spin_lock_bh(&queue->lock);
@@ -292,7 +282,7 @@ find_dequeue_entry(struct nfqnl_instance *queue, unsigned int id)
static void
nfqnl_flush(struct nfqnl_instance *queue, nfqnl_cmpfn cmpfn, unsigned long data)
{
- struct nfqnl_queue_entry *entry, *next;
+ struct nf_queue_entry *entry, *next;
spin_lock_bh(&queue->lock);
list_for_each_entry_safe(entry, next, &queue->queue_list, list) {
@@ -307,7 +297,7 @@ nfqnl_flush(struct nfqnl_instance *queue, nfqnl_cmpfn cmpfn, unsigned long data)
static struct sk_buff *
nfqnl_build_packet_message(struct nfqnl_instance *queue,
- struct nfqnl_queue_entry *entry, int *errp)
+ struct nf_queue_entry *entry, int *errp)
{
sk_buff_data_t old_tail;
size_t size;
@@ -316,7 +306,6 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
struct nfqnl_msg_packet_hdr pmsg;
struct nlmsghdr *nlh;
struct nfgenmsg *nfmsg;
- struct nf_info *entinf = entry->info;
struct sk_buff *entskb = entry->skb;
struct net_device *indev;
struct net_device *outdev;
@@ -336,7 +325,7 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
+ nla_total_size(sizeof(struct nfqnl_msg_packet_hw))
+ nla_total_size(sizeof(struct nfqnl_msg_packet_timestamp));
- outdev = entinf->outdev;
+ outdev = entry->outdev;
spin_lock_bh(&queue->lock);
@@ -379,23 +368,23 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
NFNL_SUBSYS_QUEUE << 8 | NFQNL_MSG_PACKET,
sizeof(struct nfgenmsg));
nfmsg = NLMSG_DATA(nlh);
- nfmsg->nfgen_family = entinf->pf;
+ nfmsg->nfgen_family = entry->pf;
nfmsg->version = NFNETLINK_V0;
nfmsg->res_id = htons(queue->queue_num);
pmsg.packet_id = htonl(entry->id);
pmsg.hw_protocol = entskb->protocol;
- pmsg.hook = entinf->hook;
+ pmsg.hook = entry->hook;
NLA_PUT(skb, NFQA_PACKET_HDR, sizeof(pmsg), &pmsg);
- indev = entinf->indev;
+ indev = entry->indev;
if (indev) {
tmp_uint = htonl(indev->ifindex);
#ifndef CONFIG_BRIDGE_NETFILTER
NLA_PUT(skb, NFQA_IFINDEX_INDEV, sizeof(tmp_uint), &tmp_uint);
#else
- if (entinf->pf == PF_BRIDGE) {
+ if (entry->pf == PF_BRIDGE) {
/* Case 1: indev is physical input device, we need to
* look for bridge group (when called from
* netfilter_bridge) */
@@ -425,7 +414,7 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
#ifndef CONFIG_BRIDGE_NETFILTER
NLA_PUT(skb, NFQA_IFINDEX_OUTDEV, sizeof(tmp_uint), &tmp_uint);
#else
- if (entinf->pf == PF_BRIDGE) {
+ if (entry->pf == PF_BRIDGE) {
/* Case 1: outdev is physical output device, we need to
* look for bridge group (when called from
* netfilter_bridge) */
@@ -504,13 +493,11 @@ nla_put_failure:
}
static int
-nfqnl_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
- unsigned int queuenum)
+nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
{
int status = -EINVAL;
struct sk_buff *nskb;
struct nfqnl_instance *queue;
- struct nfqnl_queue_entry *entry;
QDEBUG("entered\n");
@@ -526,22 +513,11 @@ nfqnl_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
goto err_out_put;
}
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (entry == NULL) {
- if (net_ratelimit())
- printk(KERN_ERR
- "nf_queue: OOM in nfqnl_enqueue_packet()\n");
- status = -ENOMEM;
- goto err_out_put;
- }
-
- entry->info = info;
- entry->skb = skb;
entry->id = atomic_inc_return(&queue->id_sequence);
nskb = nfqnl_build_packet_message(queue, entry, &status);
if (nskb == NULL)
- goto err_out_free;
+ goto err_out_put;
spin_lock_bh(&queue->lock);
@@ -577,15 +553,13 @@ err_out_free_nskb:
err_out_unlock:
spin_unlock_bh(&queue->lock);
-err_out_free:
- kfree(entry);
err_out_put:
instance_put(queue);
return status;
}
static int
-nfqnl_mangle(void *data, int data_len, struct nfqnl_queue_entry *e)
+nfqnl_mangle(void *data, int data_len, struct nf_queue_entry *e)
{
int diff;
int err;
@@ -630,15 +604,13 @@ nfqnl_set_mode(struct nfqnl_instance *queue,
}
static int
-dev_cmp(struct nfqnl_queue_entry *entry, unsigned long ifindex)
+dev_cmp(struct nf_queue_entry *entry, unsigned long ifindex)
{
- struct nf_info *entinf = entry->info;
-
- if (entinf->indev)
- if (entinf->indev->ifindex == ifindex)
+ if (entry->indev)
+ if (entry->indev->ifindex == ifindex)
return 1;
- if (entinf->outdev)
- if (entinf->outdev->ifindex == ifindex)
+ if (entry->outdev)
+ if (entry->outdev->ifindex == ifindex)
return 1;
#ifdef CONFIG_BRIDGE_NETFILTER
if (entry->skb->nf_bridge) {
@@ -748,7 +720,7 @@ nfqnl_recv_verdict(struct sock *ctnl, struct sk_buff *skb,
struct nfqnl_msg_verdict_hdr *vhdr;
struct nfqnl_instance *queue;
unsigned int verdict;
- struct nfqnl_queue_entry *entry;
+ struct nf_queue_entry *entry;
int err;
queue = instance_lookup_get(queue_num);
-
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