From 93cb5a1f5851ab1a0b4be735c40130898a64b812 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 10 Apr 2018 22:08:28 +0200 Subject: [PATCH] =?utf8?q?ipv{4,6}/raw:=20simplify=20=D1=95eq=5Ffile=20cod?= =?utf8?q?e?= MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Pass the hashtable to the proc private data instead of copying it into the per-file private data. Signed-off-by: Christoph Hellwig --- 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 @@ found: 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 @@ try_again: } 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; -- 2.30.2