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Message-Id: <20180516094346.20506-34-hch@lst.de>
Date: Wed, 16 May 2018 11:43:37 +0200
From: Christoph Hellwig <hch@....de>
To: Andrew Morton <akpm@...ux-foundation.org>,
Alexander Viro <viro@...iv.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@...il.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jslaby@...e.com>,
Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
linux-acpi@...r.kernel.org, drbd-dev@...ts.linbit.com,
linux-ide@...r.kernel.org, netdev@...r.kernel.org,
linux-rtc@...r.kernel.org, megaraidlinux.pdl@...adcom.com,
linux-scsi@...r.kernel.org, devel@...verdev.osuosl.org,
linux-afs@...ts.infradead.org, linux-ext4@...r.kernel.org,
jfs-discussion@...ts.sourceforge.net,
netfilter-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 33/42] netfilter/xt_hashlimit: switch to proc_create_{seq,single}_data
And use proc private data directly instead of doing a detour
through seq->private.
Signed-off-by: Christoph Hellwig <hch@....de>
---
net/netfilter/xt_hashlimit.c | 92 +++++++-----------------------------
1 file changed, 18 insertions(+), 74 deletions(-)
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 0cd73567e7ff..9b16402f29af 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -57,9 +57,9 @@ static inline struct hashlimit_net *hashlimit_pernet(struct net *net)
}
/* need to declare this at the top */
-static const struct file_operations dl_file_ops_v2;
-static const struct file_operations dl_file_ops_v1;
-static const struct file_operations dl_file_ops;
+static const struct seq_operations dl_seq_ops_v2;
+static const struct seq_operations dl_seq_ops_v1;
+static const struct seq_operations dl_seq_ops;
/* hash table crap */
struct dsthash_dst {
@@ -272,7 +272,7 @@ static int htable_create(struct net *net, struct hashlimit_cfg3 *cfg,
{
struct hashlimit_net *hashlimit_net = hashlimit_pernet(net);
struct xt_hashlimit_htable *hinfo;
- const struct file_operations *fops;
+ const struct seq_operations *ops;
unsigned int size, i;
int ret;
@@ -321,19 +321,19 @@ static int htable_create(struct net *net, struct hashlimit_cfg3 *cfg,
switch (revision) {
case 1:
- fops = &dl_file_ops_v1;
+ ops = &dl_seq_ops_v1;
break;
case 2:
- fops = &dl_file_ops_v2;
+ ops = &dl_seq_ops_v2;
break;
default:
- fops = &dl_file_ops;
+ ops = &dl_seq_ops;
}
- hinfo->pde = proc_create_data(name, 0,
+ hinfo->pde = proc_create_seq_data(name, 0,
(family == NFPROTO_IPV4) ?
hashlimit_net->ipt_hashlimit : hashlimit_net->ip6t_hashlimit,
- fops, hinfo);
+ ops, hinfo);
if (hinfo->pde == NULL) {
kfree(hinfo->name);
vfree(hinfo);
@@ -1057,7 +1057,7 @@ static struct xt_match hashlimit_mt_reg[] __read_mostly = {
static void *dl_seq_start(struct seq_file *s, loff_t *pos)
__acquires(htable->lock)
{
- struct xt_hashlimit_htable *htable = s->private;
+ struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
unsigned int *bucket;
spin_lock_bh(&htable->lock);
@@ -1074,7 +1074,7 @@ static void *dl_seq_start(struct seq_file *s, loff_t *pos)
static void *dl_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
- struct xt_hashlimit_htable *htable = s->private;
+ struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
unsigned int *bucket = v;
*pos = ++(*bucket);
@@ -1088,7 +1088,7 @@ static void *dl_seq_next(struct seq_file *s, void *v, loff_t *pos)
static void dl_seq_stop(struct seq_file *s, void *v)
__releases(htable->lock)
{
- struct xt_hashlimit_htable *htable = s->private;
+ struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
unsigned int *bucket = v;
if (!IS_ERR(bucket))
@@ -1130,7 +1130,7 @@ static void dl_seq_print(struct dsthash_ent *ent, u_int8_t family,
static int dl_seq_real_show_v2(struct dsthash_ent *ent, u_int8_t family,
struct seq_file *s)
{
- const struct xt_hashlimit_htable *ht = s->private;
+ struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->private));
spin_lock(&ent->lock);
/* recalculate to show accurate numbers */
@@ -1145,7 +1145,7 @@ static int dl_seq_real_show_v2(struct dsthash_ent *ent, u_int8_t family,
static int dl_seq_real_show_v1(struct dsthash_ent *ent, u_int8_t family,
struct seq_file *s)
{
- const struct xt_hashlimit_htable *ht = s->private;
+ struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->private));
spin_lock(&ent->lock);
/* recalculate to show accurate numbers */
@@ -1160,7 +1160,7 @@ static int dl_seq_real_show_v1(struct dsthash_ent *ent, u_int8_t family,
static int dl_seq_real_show(struct dsthash_ent *ent, u_int8_t family,
struct seq_file *s)
{
- const struct xt_hashlimit_htable *ht = s->private;
+ struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->private));
spin_lock(&ent->lock);
/* recalculate to show accurate numbers */
@@ -1174,7 +1174,7 @@ static int dl_seq_real_show(struct dsthash_ent *ent, u_int8_t family,
static int dl_seq_show_v2(struct seq_file *s, void *v)
{
- struct xt_hashlimit_htable *htable = s->private;
+ struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
unsigned int *bucket = (unsigned int *)v;
struct dsthash_ent *ent;
@@ -1188,7 +1188,7 @@ static int dl_seq_show_v2(struct seq_file *s, void *v)
static int dl_seq_show_v1(struct seq_file *s, void *v)
{
- struct xt_hashlimit_htable *htable = s->private;
+ struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
unsigned int *bucket = v;
struct dsthash_ent *ent;
@@ -1202,7 +1202,7 @@ static int dl_seq_show_v1(struct seq_file *s, void *v)
static int dl_seq_show(struct seq_file *s, void *v)
{
- struct xt_hashlimit_htable *htable = s->private;
+ struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
unsigned int *bucket = v;
struct dsthash_ent *ent;
@@ -1235,62 +1235,6 @@ static const struct seq_operations dl_seq_ops = {
.show = dl_seq_show
};
-static int dl_proc_open_v2(struct inode *inode, struct file *file)
-{
- int ret = seq_open(file, &dl_seq_ops_v2);
-
- if (!ret) {
- struct seq_file *sf = file->private_data;
-
- sf->private = PDE_DATA(inode);
- }
- return ret;
-}
-
-static int dl_proc_open_v1(struct inode *inode, struct file *file)
-{
- int ret = seq_open(file, &dl_seq_ops_v1);
-
- if (!ret) {
- struct seq_file *sf = file->private_data;
- sf->private = PDE_DATA(inode);
- }
- return ret;
-}
-
-static int dl_proc_open(struct inode *inode, struct file *file)
-{
- int ret = seq_open(file, &dl_seq_ops);
-
- if (!ret) {
- struct seq_file *sf = file->private_data;
-
- sf->private = PDE_DATA(inode);
- }
- return ret;
-}
-
-static const struct file_operations dl_file_ops_v2 = {
- .open = dl_proc_open_v2,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
-};
-
-static const struct file_operations dl_file_ops_v1 = {
- .open = dl_proc_open_v1,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
-};
-
-static const struct file_operations dl_file_ops = {
- .open = dl_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
-};
-
static int __net_init hashlimit_proc_net_init(struct net *net)
{
struct hashlimit_net *hashlimit_net = hashlimit_pernet(net);
--
2.17.0
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