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Message-ID: <20220826000445.46552-6-kuniyu@amazon.com>
Date: Thu, 25 Aug 2022 17:04:37 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Jeff Layton <jlayton@...nel.org>,
Chuck Lever <chuck.lever@...cle.com>,
Luis Chamberlain <mcgrof@...nel.org>,
Kees Cook <keescook@...omium.org>,
Iurii Zaikin <yzaikin@...gle.com>
CC: Kuniyuki Iwashima <kuniyu@...zon.com>,
Kuniyuki Iwashima <kuni1840@...il.com>,
<netdev@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>
Subject: [PATCH v1 net-next 05/13] tcp: Clean up some functions.
This patch adds no functional change and cleans up some functions
that the following patches touch around so that we make them tidy
and easy to review/revert. The changes are
- Keep reverse christmas tree order
- Remove unnecessary init of port in inet_csk_find_open_port()
- Use req_to_sk() once in reqsk_queue_unlink()
Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
net/ipv4/inet_connection_sock.c | 21 ++++++++++-----------
net/ipv4/inet_hashtables.c | 29 +++++++++++++++--------------
net/ipv4/tcp_ipv4.c | 4 ++--
3 files changed, 27 insertions(+), 27 deletions(-)
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index f0038043b661..8e71d65cfad4 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -286,15 +286,13 @@ inet_csk_find_open_port(const struct sock *sk, struct inet_bind_bucket **tb_ret,
struct inet_bind_hashbucket **head2_ret, int *port_ret)
{
struct inet_hashinfo *hinfo = sk->sk_prot->h.hashinfo;
- int port = 0;
+ int i, low, high, attempt_half, port, l3mdev;
struct inet_bind_hashbucket *head, *head2;
struct net *net = sock_net(sk);
- bool relax = false;
- int i, low, high, attempt_half;
struct inet_bind2_bucket *tb2;
struct inet_bind_bucket *tb;
u32 remaining, offset;
- int l3mdev;
+ bool relax = false;
l3mdev = inet_sk_bound_l3mdev(sk);
ports_exhausted:
@@ -471,15 +469,14 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
{
bool reuse = sk->sk_reuse && sk->sk_state != TCP_LISTEN;
struct inet_hashinfo *hinfo = sk->sk_prot->h.hashinfo;
- int ret = 1, port = snum;
- struct net *net = sock_net(sk);
bool found_port = false, check_bind_conflict = true;
bool bhash_created = false, bhash2_created = false;
struct inet_bind_hashbucket *head, *head2;
struct inet_bind2_bucket *tb2 = NULL;
struct inet_bind_bucket *tb = NULL;
bool head2_lock_acquired = false;
- int l3mdev;
+ int ret = 1, port = snum, l3mdev;
+ struct net *net = sock_net(sk);
l3mdev = inet_sk_bound_l3mdev(sk);
@@ -909,14 +906,16 @@ static void reqsk_migrate_reset(struct request_sock *req)
/* return true if req was found in the ehash table */
static bool reqsk_queue_unlink(struct request_sock *req)
{
- struct inet_hashinfo *hashinfo = req_to_sk(req)->sk_prot->h.hashinfo;
+ struct sock *sk = req_to_sk(req);
bool found = false;
- if (sk_hashed(req_to_sk(req))) {
- spinlock_t *lock = inet_ehash_lockp(hashinfo, req->rsk_hash);
+ if (sk_hashed(sk)) {
+ struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo;
+ spinlock_t *lock;
+ lock = inet_ehash_lockp(hashinfo, req->rsk_hash);
spin_lock(lock);
- found = __sk_nulls_del_node_init_rcu(req_to_sk(req));
+ found = __sk_nulls_del_node_init_rcu(sk);
spin_unlock(lock);
}
if (timer_pending(&req->rsk_timer) && del_timer_sync(&req->rsk_timer))
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 60d77e234a68..29dce78de179 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -169,13 +169,14 @@ void inet_bind_hash(struct sock *sk, struct inet_bind_bucket *tb,
static void __inet_put_port(struct sock *sk)
{
struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo;
- const int bhash = inet_bhashfn(sock_net(sk), inet_sk(sk)->inet_num,
- hashinfo->bhash_size);
- struct inet_bind_hashbucket *head = &hashinfo->bhash[bhash];
- struct inet_bind_hashbucket *head2 =
- inet_bhashfn_portaddr(hashinfo, sk, sock_net(sk),
- inet_sk(sk)->inet_num);
+ struct inet_bind_hashbucket *head, *head2;
+ struct net *net = sock_net(sk);
struct inet_bind_bucket *tb;
+ int bhash;
+
+ bhash = inet_bhashfn(net, inet_sk(sk)->inet_num, hashinfo->bhash_size);
+ head = &hashinfo->bhash[bhash];
+ head2 = inet_bhashfn_portaddr(hashinfo, sk, net, inet_sk(sk)->inet_num);
spin_lock(&head->lock);
tb = inet_csk(sk)->icsk_bind_hash;
@@ -209,17 +210,17 @@ int __inet_inherit_port(const struct sock *sk, struct sock *child)
{
struct inet_hashinfo *table = sk->sk_prot->h.hashinfo;
unsigned short port = inet_sk(child)->inet_num;
- const int bhash = inet_bhashfn(sock_net(sk), port,
- table->bhash_size);
- struct inet_bind_hashbucket *head = &table->bhash[bhash];
- struct inet_bind_hashbucket *head2 =
- inet_bhashfn_portaddr(table, child, sock_net(sk), port);
+ struct inet_bind_hashbucket *head, *head2;
bool created_inet_bind_bucket = false;
- bool update_fastreuse = false;
struct net *net = sock_net(sk);
+ bool update_fastreuse = false;
struct inet_bind2_bucket *tb2;
struct inet_bind_bucket *tb;
- int l3mdev;
+ int bhash, l3mdev;
+
+ bhash = inet_bhashfn(net, port, table->bhash_size);
+ head = &table->bhash[bhash];
+ head2 = inet_bhashfn_portaddr(table, child, net, port);
spin_lock(&head->lock);
spin_lock(&head2->lock);
@@ -629,8 +630,8 @@ static bool inet_ehash_lookup_by_sk(struct sock *sk,
bool inet_ehash_insert(struct sock *sk, struct sock *osk, bool *found_dup_sk)
{
struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo;
- struct hlist_nulls_head *list;
struct inet_ehash_bucket *head;
+ struct hlist_nulls_head *list;
spinlock_t *lock;
bool ret = true;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index cc2ad67f75be..61a9bf661814 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2406,9 +2406,9 @@ static void *established_get_first(struct seq_file *seq)
static void *established_get_next(struct seq_file *seq, void *cur)
{
- struct sock *sk = cur;
- struct hlist_nulls_node *node;
struct tcp_iter_state *st = seq->private;
+ struct hlist_nulls_node *node;
+ struct sock *sk = cur;
++st->num;
++st->offset;
--
2.30.2
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