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Date: Mon, 16 Oct 2017 17:29:36 -0700
From: Kees Cook <keescook@...omium.org>
To: "David S. Miller" <davem@...emloft.net>
Cc: Kees Cook <keescook@...omium.org>,
Ralf Baechle <ralf@...ux-mips.org>,
Andrew Hendry <andrew.hendry@...il.com>,
Eric Dumazet <edumazet@...gle.com>,
Paolo Abeni <pabeni@...hat.com>,
David Howells <dhowells@...hat.com>,
Julia Lawall <julia.lawall@...6.fr>,
linzhang <xiaolou4617@...il.com>, Ingo Molnar <mingo@...nel.org>,
netdev@...r.kernel.org, linux-hams@...r.kernel.org,
linux-x25@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org
Subject: [PATCH 52/58] net/core: Convert sk_timer users to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly for all users of sk_timer.
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Andrew Hendry <andrew.hendry@...il.com>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: David Howells <dhowells@...hat.com>
Cc: Julia Lawall <julia.lawall@...6.fr>
Cc: linzhang <xiaolou4617@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: netdev@...r.kernel.org
Cc: linux-hams@...r.kernel.org
Cc: linux-x25@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
net/core/sock.c | 2 +-
net/netrom/af_netrom.c | 6 +++---
net/netrom/nr_timer.c | 47 ++++++++++++++++++++++++-----------------------
net/rose/rose_timer.c | 8 ++++----
net/x25/af_x25.c | 8 +++++---
net/x25/x25_timer.c | 17 +++++++++--------
6 files changed, 46 insertions(+), 42 deletions(-)
diff --git a/net/core/sock.c b/net/core/sock.c
index 57113b42b2c8..34b3ac2de44a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2685,7 +2685,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
sk_init_common(sk);
sk->sk_send_head = NULL;
- setup_timer(&sk->sk_timer, NULL, (unsigned long)sk);
+ timer_setup(&sk->sk_timer, NULL, 0);
sk->sk_allocation = GFP_KERNEL;
sk->sk_rcvbuf = sysctl_rmem_default;
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index ebf16f7f9089..2dec3583c97d 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -241,9 +241,9 @@ void nr_destroy_socket(struct sock *);
/*
* Handler for deferred kills.
*/
-static void nr_destroy_timer(unsigned long data)
+static void nr_destroy_timer(struct timer_list *t)
{
- struct sock *sk=(struct sock *)data;
+ struct sock *sk = from_timer(sk, t, sk_timer);
bh_lock_sock(sk);
sock_hold(sk);
nr_destroy_socket(sk);
@@ -284,7 +284,7 @@ void nr_destroy_socket(struct sock *sk)
if (sk_has_allocations(sk)) {
/* Defer: outstanding buffers */
- sk->sk_timer.function = nr_destroy_timer;
+ sk->sk_timer.function = (TIMER_FUNC_TYPE)nr_destroy_timer;
sk->sk_timer.expires = jiffies + 2 * HZ;
add_timer(&sk->sk_timer);
} else
diff --git a/net/netrom/nr_timer.c b/net/netrom/nr_timer.c
index f84ce71f1f5f..43569aea0f5e 100644
--- a/net/netrom/nr_timer.c
+++ b/net/netrom/nr_timer.c
@@ -29,23 +29,23 @@
#include <linux/interrupt.h>
#include <net/netrom.h>
-static void nr_heartbeat_expiry(unsigned long);
-static void nr_t1timer_expiry(unsigned long);
-static void nr_t2timer_expiry(unsigned long);
-static void nr_t4timer_expiry(unsigned long);
-static void nr_idletimer_expiry(unsigned long);
+static void nr_heartbeat_expiry(struct timer_list *);
+static void nr_t1timer_expiry(struct timer_list *);
+static void nr_t2timer_expiry(struct timer_list *);
+static void nr_t4timer_expiry(struct timer_list *);
+static void nr_idletimer_expiry(struct timer_list *);
void nr_init_timers(struct sock *sk)
{
struct nr_sock *nr = nr_sk(sk);
- setup_timer(&nr->t1timer, nr_t1timer_expiry, (unsigned long)sk);
- setup_timer(&nr->t2timer, nr_t2timer_expiry, (unsigned long)sk);
- setup_timer(&nr->t4timer, nr_t4timer_expiry, (unsigned long)sk);
- setup_timer(&nr->idletimer, nr_idletimer_expiry, (unsigned long)sk);
+ timer_setup(&nr->t1timer, nr_t1timer_expiry, 0);
+ timer_setup(&nr->t2timer, nr_t2timer_expiry, 0);
+ timer_setup(&nr->t4timer, nr_t4timer_expiry, 0);
+ timer_setup(&nr->idletimer, nr_idletimer_expiry, 0);
/* initialized by sock_init_data */
- sk->sk_timer.function = &nr_heartbeat_expiry;
+ sk->sk_timer.function = (TIMER_FUNC_TYPE)nr_heartbeat_expiry;
}
void nr_start_t1timer(struct sock *sk)
@@ -112,9 +112,9 @@ int nr_t1timer_running(struct sock *sk)
return timer_pending(&nr_sk(sk)->t1timer);
}
-static void nr_heartbeat_expiry(unsigned long param)
+static void nr_heartbeat_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
+ struct sock *sk = from_timer(sk, t, sk_timer);
struct nr_sock *nr = nr_sk(sk);
bh_lock_sock(sk);
@@ -151,10 +151,10 @@ static void nr_heartbeat_expiry(unsigned long param)
bh_unlock_sock(sk);
}
-static void nr_t2timer_expiry(unsigned long param)
+static void nr_t2timer_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
- struct nr_sock *nr = nr_sk(sk);
+ struct nr_sock *nr = from_timer(nr, t, t2timer);
+ struct sock *sk = &nr->sock;
bh_lock_sock(sk);
if (nr->condition & NR_COND_ACK_PENDING) {
@@ -164,19 +164,20 @@ static void nr_t2timer_expiry(unsigned long param)
bh_unlock_sock(sk);
}
-static void nr_t4timer_expiry(unsigned long param)
+static void nr_t4timer_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
+ struct nr_sock *nr = from_timer(nr, t, t4timer);
+ struct sock *sk = &nr->sock;
bh_lock_sock(sk);
nr_sk(sk)->condition &= ~NR_COND_PEER_RX_BUSY;
bh_unlock_sock(sk);
}
-static void nr_idletimer_expiry(unsigned long param)
+static void nr_idletimer_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
- struct nr_sock *nr = nr_sk(sk);
+ struct nr_sock *nr = from_timer(nr, t, idletimer);
+ struct sock *sk = &nr->sock;
bh_lock_sock(sk);
@@ -201,10 +202,10 @@ static void nr_idletimer_expiry(unsigned long param)
bh_unlock_sock(sk);
}
-static void nr_t1timer_expiry(unsigned long param)
+static void nr_t1timer_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
- struct nr_sock *nr = nr_sk(sk);
+ struct nr_sock *nr = from_timer(nr, t, t1timer);
+ struct sock *sk = &nr->sock;
bh_lock_sock(sk);
switch (nr->state) {
diff --git a/net/rose/rose_timer.c b/net/rose/rose_timer.c
index e08201185214..ea613b2a9735 100644
--- a/net/rose/rose_timer.c
+++ b/net/rose/rose_timer.c
@@ -28,7 +28,7 @@
#include <linux/interrupt.h>
#include <net/rose.h>
-static void rose_heartbeat_expiry(unsigned long);
+static void rose_heartbeat_expiry(struct timer_list *t);
static void rose_timer_expiry(struct timer_list *);
static void rose_idletimer_expiry(struct timer_list *);
@@ -36,7 +36,7 @@ void rose_start_heartbeat(struct sock *sk)
{
del_timer(&sk->sk_timer);
- sk->sk_timer.function = &rose_heartbeat_expiry;
+ sk->sk_timer.function = (TIMER_FUNC_TYPE)rose_heartbeat_expiry;
sk->sk_timer.expires = jiffies + 5 * HZ;
add_timer(&sk->sk_timer);
@@ -119,9 +119,9 @@ void rose_stop_idletimer(struct sock *sk)
del_timer(&rose_sk(sk)->idletimer);
}
-static void rose_heartbeat_expiry(unsigned long param)
+static void rose_heartbeat_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
+ struct sock *sk = from_timer(sk, t, sk_timer);
struct rose_sock *rose = rose_sk(sk);
bh_lock_sock(sk);
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index c590c0bd1393..ea87143314f3 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -374,9 +374,11 @@ static void __x25_destroy_socket(struct sock *);
/*
* handler for deferred kills.
*/
-static void x25_destroy_timer(unsigned long data)
+static void x25_destroy_timer(struct timer_list *t)
{
- x25_destroy_socket_from_timer((struct sock *)data);
+ struct sock *sk = from_timer(sk, t, sk_timer);
+
+ x25_destroy_socket_from_timer(sk);
}
/*
@@ -413,7 +415,7 @@ static void __x25_destroy_socket(struct sock *sk)
if (sk_has_allocations(sk)) {
/* Defer: outstanding buffers */
sk->sk_timer.expires = jiffies + 10 * HZ;
- sk->sk_timer.function = x25_destroy_timer;
+ sk->sk_timer.function = (TIMER_FUNC_TYPE)x25_destroy_timer;
add_timer(&sk->sk_timer);
} else {
/* drop last reference so sock_put will free */
diff --git a/net/x25/x25_timer.c b/net/x25/x25_timer.c
index de5cec41d100..1dfba3c23459 100644
--- a/net/x25/x25_timer.c
+++ b/net/x25/x25_timer.c
@@ -26,17 +26,17 @@
#include <net/tcp_states.h>
#include <net/x25.h>
-static void x25_heartbeat_expiry(unsigned long);
-static void x25_timer_expiry(unsigned long);
+static void x25_heartbeat_expiry(struct timer_list *t);
+static void x25_timer_expiry(struct timer_list *t);
void x25_init_timers(struct sock *sk)
{
struct x25_sock *x25 = x25_sk(sk);
- setup_timer(&x25->timer, x25_timer_expiry, (unsigned long)sk);
+ timer_setup(&x25->timer, x25_timer_expiry, 0);
/* initialized by sock_init_data */
- sk->sk_timer.function = &x25_heartbeat_expiry;
+ sk->sk_timer.function = (TIMER_FUNC_TYPE)x25_heartbeat_expiry;
}
void x25_start_heartbeat(struct sock *sk)
@@ -92,9 +92,9 @@ unsigned long x25_display_timer(struct sock *sk)
return x25->timer.expires - jiffies;
}
-static void x25_heartbeat_expiry(unsigned long param)
+static void x25_heartbeat_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
+ struct sock *sk = from_timer(sk, t, sk_timer);
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) /* can currently only occur in state 3 */
@@ -159,9 +159,10 @@ static inline void x25_do_timer_expiry(struct sock * sk)
}
}
-static void x25_timer_expiry(unsigned long param)
+static void x25_timer_expiry(struct timer_list *t)
{
- struct sock *sk = (struct sock *)param;
+ struct x25_sock *x25 = from_timer(x25, t, timer);
+ struct sock *sk = &x25->sk;
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) { /* can currently only occur in state 3 */
--
2.7.4
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