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inet/connection_sock: Convert timers to use timer_setup()

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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.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: netdev@vger.kernel.org
Cc: dccp@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kees Cook 2017-10-16 17:29:19 -07:00 committed by David S. Miller
parent a92c5751b9
commit 59f379f904
4 changed files with 33 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/net/inet_connection_sock.h
View File

@ -169,9 +169,9 @@ enum inet_csk_ack_state_t {
};
void inet_csk_init_xmit_timers(struct sock *sk,
void (*retransmit_handler)(unsigned long),
void (*delack_handler)(unsigned long),
void (*keepalive_handler)(unsigned long));
void (*retransmit_handler)(struct timer_list *),
void (*delack_handler)(struct timer_list *),
void (*keepalive_handler)(struct timer_list *));
void inet_csk_clear_xmit_timers(struct sock *sk);
static inline void inet_csk_schedule_ack(struct sock *sk)

18
net/dccp/timer.c
View File

@ -125,10 +125,11 @@ static void dccp_retransmit_timer(struct sock *sk)
__sk_dst_reset(sk);
}
static void dccp_write_timer(unsigned long data)
static void dccp_write_timer(struct timer_list *t)
{
struct sock *sk = (struct sock *)data;
struct inet_connection_sock *icsk = inet_csk(sk);
struct inet_connection_sock *icsk =
from_timer(icsk, t, icsk_retransmit_timer);
struct sock *sk = &icsk->icsk_inet.sk;
int event = 0;
bh_lock_sock(sk);
@ -161,19 +162,20 @@ out:
sock_put(sk);
}
static void dccp_keepalive_timer(unsigned long data)
static void dccp_keepalive_timer(struct timer_list *t)
{
struct sock *sk = (struct sock *)data;
struct sock *sk = from_timer(sk, t, sk_timer);
pr_err("dccp should not use a keepalive timer !\n");
sock_put(sk);
}
/* This is the same as tcp_delack_timer, sans prequeue & mem_reclaim stuff */
static void dccp_delack_timer(unsigned long data)
static void dccp_delack_timer(struct timer_list *t)
{
struct sock *sk = (struct sock *)data;
struct inet_connection_sock *icsk = inet_csk(sk);
struct inet_connection_sock *icsk =
from_timer(icsk, t, icsk_delack_timer);
struct sock *sk = &icsk->icsk_inet.sk;
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) {

21
net/ipv4/inet_connection_sock.c
View File

@ -494,17 +494,15 @@ EXPORT_SYMBOL(inet_csk_accept);
* to optimize.
*/
void inet_csk_init_xmit_timers(struct sock *sk,
void (*retransmit_handler)(unsigned long),
void (*delack_handler)(unsigned long),
void (*keepalive_handler)(unsigned long))
void (*retransmit_handler)(struct timer_list *t),
void (*delack_handler)(struct timer_list *t),
void (*keepalive_handler)(struct timer_list *t))
{
struct inet_connection_sock *icsk = inet_csk(sk);
setup_timer(&icsk->icsk_retransmit_timer, retransmit_handler,
(unsigned long)sk);
setup_timer(&icsk->icsk_delack_timer, delack_handler,
(unsigned long)sk);
setup_timer(&sk->sk_timer, keepalive_handler, (unsigned long)sk);
timer_setup(&icsk->icsk_retransmit_timer, retransmit_handler, 0);
timer_setup(&icsk->icsk_delack_timer, delack_handler, 0);
timer_setup(&sk->sk_timer, keepalive_handler, 0);
icsk->icsk_pending = icsk->icsk_ack.pending = 0;
}
EXPORT_SYMBOL(inet_csk_init_xmit_timers);
@ -676,9 +674,9 @@ void inet_csk_reqsk_queue_drop_and_put(struct sock *sk, struct request_sock *req
}
EXPORT_SYMBOL(inet_csk_reqsk_queue_drop_and_put);
static void reqsk_timer_handler(unsigned long data)
static void reqsk_timer_handler(struct timer_list *t)
{
struct request_sock *req = (struct request_sock *)data;
struct request_sock *req = from_timer(req, t, rsk_timer);
struct sock *sk_listener = req->rsk_listener;
struct net *net = sock_net(sk_listener);
struct inet_connection_sock *icsk = inet_csk(sk_listener);
@ -749,8 +747,7 @@ static void reqsk_queue_hash_req(struct request_sock *req,
req->num_timeout = 0;
req->sk = NULL;
setup_pinned_timer(&req->rsk_timer, reqsk_timer_handler,
(unsigned long)req);
timer_setup(&req->rsk_timer, reqsk_timer_handler, TIMER_PINNED);
mod_timer(&req->rsk_timer, jiffies + timeout);
inet_ehash_insert(req_to_sk(req), NULL);

18
net/ipv4/tcp_timer.c
View File

@ -288,15 +288,17 @@ out:
*
* Returns: Nothing (void)
*/
static void tcp_delack_timer(unsigned long data)
static void tcp_delack_timer(struct timer_list *t)
{
struct sock *sk = (struct sock *)data;
struct inet_connection_sock *icsk =
from_timer(icsk, t, icsk_delack_timer);
struct sock *sk = &icsk->icsk_inet.sk;
bh_lock_sock(sk);
if (!sock_owned_by_user(sk)) {
tcp_delack_timer_handler(sk);
} else {
inet_csk(sk)->icsk_ack.blocked = 1;
icsk->icsk_ack.blocked = 1;
__NET_INC_STATS(sock_net(sk), LINUX_MIB_DELAYEDACKLOCKED);
/* deleguate our work to tcp_release_cb() */
if (!test_and_set_bit(TCP_DELACK_TIMER_DEFERRED, &sk->sk_tsq_flags))
@ -576,9 +578,11 @@ out:
sk_mem_reclaim(sk);
}
static void tcp_write_timer(unsigned long data)
static void tcp_write_timer(struct timer_list *t)
{
struct sock *sk = (struct sock *)data;
struct inet_connection_sock *icsk =
from_timer(icsk, t, icsk_retransmit_timer);
struct sock *sk = &icsk->icsk_inet.sk;
bh_lock_sock(sk);
if (!sock_owned_by_user(sk)) {
@ -613,9 +617,9 @@ void tcp_set_keepalive(struct sock *sk, int val)
EXPORT_SYMBOL_GPL(tcp_set_keepalive);
static void tcp_keepalive_timer (unsigned long data)
static void tcp_keepalive_timer (struct timer_list *t)
{
struct sock *sk = (struct sock *) data;
struct sock *sk = from_timer(sk, t, sk_timer);
struct inet_connection_sock *icsk = inet_csk(sk);
struct tcp_sock *tp = tcp_sk(sk);
u32 elapsed;