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Message-Id: <20180516094346.20506-13-hch@lst.de>
Date: Wed, 16 May 2018 11:43:16 +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 12/42] ipv{4,6}/raw: simplify ѕeq_file code
Pass the hashtable to the proc private data instead of copying
it into the per-file private data.
Signed-off-by: Christoph Hellwig <hch@....de>
---
include/net/raw.h | 4 ----
net/ipv4/raw.c | 36 ++++++++++++------------------------
net/ipv6/raw.c | 6 ++++--
3 files changed, 16 insertions(+), 30 deletions(-)
diff --git a/include/net/raw.h b/include/net/raw.h
index 99d26d0c4a19..9c9fa98a91a4 100644
--- a/include/net/raw.h
+++ b/include/net/raw.h
@@ -48,7 +48,6 @@ void raw_proc_exit(void);
struct raw_iter_state {
struct seq_net_private p;
int bucket;
- struct raw_hashinfo *h;
};
static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
@@ -58,9 +57,6 @@ static inline struct raw_iter_state *raw_seq_private(struct seq_file *seq)
void *raw_seq_start(struct seq_file *seq, loff_t *pos);
void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos);
void raw_seq_stop(struct seq_file *seq, void *v);
-int raw_seq_open(struct inode *ino, struct file *file,
- struct raw_hashinfo *h, const struct seq_operations *ops);
-
#endif
int raw_hash_sk(struct sock *sk);
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 1b4d3355624a..ae57962b31e3 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -1003,11 +1003,12 @@ struct proto raw_prot = {
static struct sock *raw_get_first(struct seq_file *seq)
{
struct sock *sk;
+ struct raw_hashinfo *h = PDE_DATA(file_inode(seq->file));
struct raw_iter_state *state = raw_seq_private(seq);
for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
++state->bucket) {
- sk_for_each(sk, &state->h->ht[state->bucket])
+ sk_for_each(sk, &h->ht[state->bucket])
if (sock_net(sk) == seq_file_net(seq))
goto found;
}
@@ -1018,6 +1019,7 @@ static struct sock *raw_get_first(struct seq_file *seq)
static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
{
+ struct raw_hashinfo *h = PDE_DATA(file_inode(seq->file));
struct raw_iter_state *state = raw_seq_private(seq);
do {
@@ -1027,7 +1029,7 @@ static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
} while (sk && sock_net(sk) != seq_file_net(seq));
if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
- sk = sk_head(&state->h->ht[state->bucket]);
+ sk = sk_head(&h->ht[state->bucket]);
goto try_again;
}
return sk;
@@ -1045,9 +1047,9 @@ static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
void *raw_seq_start(struct seq_file *seq, loff_t *pos)
{
- struct raw_iter_state *state = raw_seq_private(seq);
+ struct raw_hashinfo *h = PDE_DATA(file_inode(seq->file));
- read_lock(&state->h->lock);
+ read_lock(&h->lock);
return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
}
EXPORT_SYMBOL_GPL(raw_seq_start);
@@ -1067,9 +1069,9 @@ EXPORT_SYMBOL_GPL(raw_seq_next);
void raw_seq_stop(struct seq_file *seq, void *v)
{
- struct raw_iter_state *state = raw_seq_private(seq);
+ struct raw_hashinfo *h = PDE_DATA(file_inode(seq->file));
- read_unlock(&state->h->lock);
+ read_unlock(&h->lock);
}
EXPORT_SYMBOL_GPL(raw_seq_stop);
@@ -1110,25 +1112,10 @@ static const struct seq_operations raw_seq_ops = {
.show = raw_seq_show,
};
-int raw_seq_open(struct inode *ino, struct file *file,
- struct raw_hashinfo *h, const struct seq_operations *ops)
-{
- int err;
- struct raw_iter_state *i;
-
- err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
- if (err < 0)
- return err;
-
- i = raw_seq_private((struct seq_file *)file->private_data);
- i->h = h;
- return 0;
-}
-EXPORT_SYMBOL_GPL(raw_seq_open);
-
static int raw_v4_seq_open(struct inode *inode, struct file *file)
{
- return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
+ return seq_open_net(inode, file, &raw_seq_ops,
+ sizeof(struct raw_iter_state));
}
static const struct file_operations raw_seq_fops = {
@@ -1140,7 +1127,8 @@ static const struct file_operations raw_seq_fops = {
static __net_init int raw_init_net(struct net *net)
{
- if (!proc_create("raw", 0444, net->proc_net, &raw_seq_fops))
+ if (!proc_create_data("raw", 0444, net->proc_net, &raw_seq_fops,
+ &raw_v4_hashinfo))
return -ENOMEM;
return 0;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 5eb9b08947ed..dade69bf61e6 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1306,7 +1306,8 @@ static const struct seq_operations raw6_seq_ops = {
static int raw6_seq_open(struct inode *inode, struct file *file)
{
- return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
+ return seq_open_net(inode, file, &raw6_seq_ops,
+ sizeof(struct raw_iter_state));
}
static const struct file_operations raw6_seq_fops = {
@@ -1318,7 +1319,8 @@ static const struct file_operations raw6_seq_fops = {
static int __net_init raw6_init_net(struct net *net)
{
- if (!proc_create("raw6", 0444, net->proc_net, &raw6_seq_fops))
+ if (!proc_create_data("raw6", 0444, net->proc_net, &raw6_seq_fops,
+ &raw_v6_hashinfo))
return -ENOMEM;
return 0;
--
2.17.0
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