linux-kernel - [PATCH 1/8] net: dccp: convert tasklets to use new tasklet

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Date:   Mon, 17 Aug 2020 14:21:13 +0530
From:   Allen Pais <allen.cryptic@...il.com>
To:     gerrit@....abdn.ac.uk, davem@...emloft.net, kuba@...nel.org,
        edumazet@...gle.com, kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        johannes@...solutions.net, alex.aring@...il.com,
        stefan@...enfreihafen.org, santosh.shilimkar@...cle.com,
        jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us
Cc:     keescook@...omium.org, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-wpan@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-s390@...r.kernel.org, Allen Pais <allen.lkml@...il.com>,
        Romain Perier <romain.perier@...il.com>
Subject: [PATCH 1/8] net: dccp: convert tasklets to use new tasklet_setup() API

From: Allen Pais <allen.lkml@...il.com>

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier <romain.perier@...il.com>
Signed-off-by: Allen Pais <allen.lkml@...il.com>
---
 net/dccp/timer.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/dccp/timer.c b/net/dccp/timer.c
index 0e06dfc32273..f174ecb2fb4e 100644
--- a/net/dccp/timer.c
+++ b/net/dccp/timer.c
@@ -220,9 +220,10 @@ static void dccp_delack_timer(struct timer_list *t)
  *
  * See the comments above %ccid_dequeueing_decision for supported modes.
  */
-static void dccp_write_xmitlet(unsigned long data)
+static void dccp_write_xmitlet(struct tasklet_struct *t)
 {
-	struct sock *sk = (struct sock *)data;
+	struct dccp_sock *dp = from_tasklet(dp, t, dccps_xmitlet);
+	struct sock *sk = &dp->dccps_inet_connection.icsk_inet.sk;
 
 	bh_lock_sock(sk);
 	if (sock_owned_by_user(sk))
@@ -236,16 +237,15 @@ static void dccp_write_xmitlet(unsigned long data)
 static void dccp_write_xmit_timer(struct timer_list *t)
 {
 	struct dccp_sock *dp = from_timer(dp, t, dccps_xmit_timer);
-	struct sock *sk = &dp->dccps_inet_connection.icsk_inet.sk;
 
-	dccp_write_xmitlet((unsigned long)sk);
+	dccp_write_xmitlet(&dp->dccps_xmitlet);
 }
 
 void dccp_init_xmit_timers(struct sock *sk)
 {
 	struct dccp_sock *dp = dccp_sk(sk);
 
-	tasklet_init(&dp->dccps_xmitlet, dccp_write_xmitlet, (unsigned long)sk);
+	tasklet_setup(&dp->dccps_xmitlet, dccp_write_xmitlet);
 	timer_setup(&dp->dccps_xmit_timer, dccp_write_xmit_timer, 0);
 	inet_csk_init_xmit_timers(sk, &dccp_write_timer, &dccp_delack_timer,
 				  &dccp_keepalive_timer);
-- 
2.17.1