[NET] NETNS: Omit seq_net_private->net without CONFIG_NET_NS.

Without CONFIG_NET_NS, no namespace other than &init_net exists,
no need to store net in seq_net_private.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

4 files changed, 25 insertions, 26 deletions

diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index 8d58d85dfac6..02088deb0461 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -821,7 +821,7 @@ static struct fib_alias *fib_get_first(struct seq_file *seq)
         struct fib_table *main_table;
         struct fn_hash *table;
 
-        main_table = fib_get_table(iter->p.net, RT_TABLE_MAIN);
+        main_table = fib_get_table(seq_file_net(seq), RT_TABLE_MAIN);
         table = (struct fn_hash *)main_table->tb_data;
 
         iter->bucket    = 0;
@@ -959,11 +959,10 @@ static struct fib_alias *fib_get_idx(struct seq_file *seq, loff_t pos)
 static void *fib_seq_start(struct seq_file *seq, loff_t *pos)
         __acquires(fib_hash_lock)
 {
-        struct fib_iter_state *iter = seq->private;
         void *v = NULL;
 
         read_lock(&fib_hash_lock);
-        if (fib_get_table(iter->p.net, RT_TABLE_MAIN))
+        if (fib_get_table(seq_file_net(seq), RT_TABLE_MAIN))
                 v = *pos ? fib_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
         return v;
 }
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index ce6cb34e28e1..9e491e70e855 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -2279,9 +2279,10 @@ static const struct file_operations fib_triestat_fops = {
         .release = fib_triestat_seq_release,
 };
 
-static struct node *fib_trie_get_idx(struct fib_trie_iter *iter, loff_t pos)
+static struct node *fib_trie_get_idx(struct seq_file *seq, loff_t pos)
 {
-        struct net *net = iter->p.net;
+        struct fib_trie_iter *iter = seq->private;
+        struct net *net = seq_file_net(seq);
         loff_t idx = 0;
         unsigned int h;
 
@@ -2309,16 +2310,14 @@ static struct node *fib_trie_get_idx(struct fib_trie_iter *iter, loff_t pos)
 static void *fib_trie_seq_start(struct seq_file *seq, loff_t *pos)
         __acquires(RCU)
 {
-        struct fib_trie_iter *iter = seq->private;
-
         rcu_read_lock();
-        return fib_trie_get_idx(iter, *pos);
+        return fib_trie_get_idx(seq, *pos);
 }
 
 static void *fib_trie_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
         struct fib_trie_iter *iter = seq->private;
-        struct net *net = iter->p.net;
+        struct net *net = seq_file_net(seq);
         struct fib_table *tb = iter->tb;
         struct hlist_node *tb_node;
         unsigned int h;
@@ -2513,7 +2512,7 @@ static void *fib_route_seq_start(struct seq_file *seq, loff_t *pos)
         struct fib_table *tb;
 
         rcu_read_lock();
-        tb = fib_get_table(iter->p.net, RT_TABLE_MAIN);
+        tb = fib_get_table(seq_file_net(seq), RT_TABLE_MAIN);
         if (!tb)
                 return NULL;
 
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index be19a4048d7c..25dc8b38cac3 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -856,7 +856,7 @@ static struct sock *raw_get_first(struct seq_file *seq)
                 struct hlist_node *node;
 
                 sk_for_each(sk, node, &state->h->ht[state->bucket])
-                        if (sock_net(sk) == state->p.net)
+                        if (sock_net(sk) == seq_file_net(seq))
                                 goto found;
         }
         sk = NULL;
@@ -872,7 +872,7 @@ static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
                 sk = sk_next(sk);
 try_again:
                 ;
-        } while (sk && sock_net(sk) != state->p.net);
+        } while (sk && sock_net(sk) != seq_file_net(seq));
 
         if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
                 sk = sk_head(&state->h->ht[state->bucket]);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 194f5cca3121..eab8d75e5222 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -276,15 +276,16 @@ struct rt_cache_iter_state {
         int genid;
 };
 
-static struct rtable *rt_cache_get_first(struct rt_cache_iter_state *st)
+static struct rtable *rt_cache_get_first(struct seq_file *seq)
 {
+        struct rt_cache_iter_state *st = seq->private;
         struct rtable *r = NULL;
 
         for (st->bucket = rt_hash_mask; st->bucket >= 0; --st->bucket) {
                 rcu_read_lock_bh();
                 r = rcu_dereference(rt_hash_table[st->bucket].chain);
                 while (r) {
-                        if (dev_net(r->u.dst.dev) == st->p.net &&
+                        if (dev_net(r->u.dst.dev) == seq_file_net(seq) &&
                             r->rt_genid == st->genid)
                                 return r;
                         r = rcu_dereference(r->u.dst.rt_next);
@@ -294,9 +295,10 @@ static struct rtable *rt_cache_get_first(struct rt_cache_iter_state *st)
         return r;
 }
 
-static struct rtable *__rt_cache_get_next(struct rt_cache_iter_state *st,
+static struct rtable *__rt_cache_get_next(struct seq_file *seq,
                                           struct rtable *r)
 {
+        struct rt_cache_iter_state *st = seq->private;
         r = r->u.dst.rt_next;
         while (!r) {
                 rcu_read_unlock_bh();
@@ -308,11 +310,12 @@ static struct rtable *__rt_cache_get_next(struct rt_cache_iter_state *st,
         return rcu_dereference(r);
 }
 
-static struct rtable *rt_cache_get_next(struct rt_cache_iter_state *st,
+static struct rtable *rt_cache_get_next(struct seq_file *seq,
                                         struct rtable *r)
 {
-        while ((r = __rt_cache_get_next(st, r)) != NULL) {
-                if (dev_net(r->u.dst.dev) != st->p.net)
+        struct rt_cache_iter_state *st = seq->private;
+        while ((r = __rt_cache_get_next(seq, r)) != NULL) {
+                if (dev_net(r->u.dst.dev) != seq_file_net(seq))
                         continue;
                 if (r->rt_genid == st->genid)
                         break;
@@ -320,12 +323,12 @@ static struct rtable *rt_cache_get_next(struct rt_cache_iter_state *st,
         return r;
 }
 
-static struct rtable *rt_cache_get_idx(struct rt_cache_iter_state *st, loff_t pos)
+static struct rtable *rt_cache_get_idx(struct seq_file *seq, loff_t pos)
 {
-        struct rtable *r = rt_cache_get_first(st);
+        struct rtable *r = rt_cache_get_first(seq);
 
         if (r)
-                while (pos && (r = rt_cache_get_next(st, r)))
+                while (pos && (r = rt_cache_get_next(seq, r)))
                         --pos;
         return pos ? NULL : r;
 }
@@ -333,9 +336,8 @@ static struct rtable *rt_cache_get_idx(struct rt_cache_iter_state *st, loff_t po
 static void *rt_cache_seq_start(struct seq_file *seq, loff_t *pos)
 {
         struct rt_cache_iter_state *st = seq->private;
-
         if (*pos)
-                return rt_cache_get_idx(st, *pos - 1);
+                return rt_cache_get_idx(seq, *pos - 1);
         st->genid = atomic_read(&rt_genid);
         return SEQ_START_TOKEN;
 }
@@ -343,12 +345,11 @@ static void *rt_cache_seq_start(struct seq_file *seq, loff_t *pos)
 static void *rt_cache_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
         struct rtable *r;
-        struct rt_cache_iter_state *st = seq->private;
 
         if (v == SEQ_START_TOKEN)
-                r = rt_cache_get_first(st);
+                r = rt_cache_get_first(seq);
         else
-                r = rt_cache_get_next(st, v);
+                r = rt_cache_get_next(seq, v);
         ++*pos;
         return r;
 }