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net: af_packet: Convert timers to use timer_setup()

PATCH Applied Kees Cook 2 participants 2 messages Oct 24, 2017 – Oct 25, 2017

Subsystems (3)
Networking Network drivers Packet sockets
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Kees Cook

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#0 lore raw

PATCH 1/1 net: af_packet: Convert timers 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.

Cc "David S. Miller" <[email protected]>
Cc Eric Dumazet <[email protected]>
Cc Willem de Bruijn <[email protected]>
Cc Mike Maloney <[email protected]>
Cc Jarno Rajahalme <[email protected]>
Cc [email protected]
Signed-off-by Kees Cook <[email protected]>
---
 net/packet/af_packet.c | 22 +++++++---------------
 1 file changed, 7 insertions(+), 15 deletions(-)
net/packet/af_packet.c +7 -15
index 4f4fa323171d..9603f6ff17a4 100644
@@ -201,11 +201,8 @@ static void prb_retire_current_block(struct tpacket_kbdq_core *,
 static int prb_queue_frozen(struct tpacket_kbdq_core *);
 static void prb_open_block(struct tpacket_kbdq_core *,
 		struct tpacket_block_desc *);
-static void prb_retire_rx_blk_timer_expired(unsigned long);
+static void prb_retire_rx_blk_timer_expired(struct timer_list *);
 static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *);
-static void prb_init_blk_timer(struct packet_sock *,
-		struct tpacket_kbdq_core *,
-		void (*func) (unsigned long));
 static void prb_fill_rxhash(struct tpacket_kbdq_core *, struct tpacket3_hdr *);
 static void prb_clear_rxhash(struct tpacket_kbdq_core *,
 		struct tpacket3_hdr *);

@@ -540,20 +537,14 @@ static void prb_shutdown_retire_blk_timer(struct packet_sock *po,
 	prb_del_retire_blk_timer(pkc);
 }
 
-static void prb_init_blk_timer(struct packet_sock *po,
-		struct tpacket_kbdq_core *pkc,
-		void (*func) (unsigned long))
-{
-	setup_timer(&pkc->retire_blk_timer, func, (long)po);
-	pkc->retire_blk_timer.expires = jiffies;
-}
-
 static void prb_setup_retire_blk_timer(struct packet_sock *po)
 {
 	struct tpacket_kbdq_core *pkc;
 
 	pkc = GET_PBDQC_FROM_RB(&po->rx_ring);
-	prb_init_blk_timer(po, pkc, prb_retire_rx_blk_timer_expired);
+	timer_setup(&pkc->retire_blk_timer, prb_retire_rx_blk_timer_expired,
+		    0);
+	pkc->retire_blk_timer.expires = jiffies;
 }
 
 static int prb_calc_retire_blk_tmo(struct packet_sock *po,

@@ -671,9 +662,10 @@ static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *pkc)
  * prb_calc_retire_blk_tmo() calculates the tmo.
  *
  */
-static void prb_retire_rx_blk_timer_expired(unsigned long data)
+static void prb_retire_rx_blk_timer_expired(struct timer_list *t)
 {
-	struct packet_sock *po = (struct packet_sock *)data;
+	struct packet_sock *po =
+		from_timer(po, t, rx_ring.prb_bdqc.retire_blk_timer);
 	struct tpacket_kbdq_core *pkc = GET_PBDQC_FROM_RB(&po->rx_ring);
 	unsigned int frozen;
 	struct tpacket_block_desc *pbd;
Signature · 6 lines
2.7.4


-- 
Kees Cook
Pixel Security
maintainer Applied
#1 lore raw

From: Kees Cook <[email protected]>
Date: Tue, 24 Oct 2017 01:46:26 -0700

Quoted 11 lines

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" <[email protected]>
Cc Eric Dumazet <[email protected]>
Cc Willem de Bruijn <[email protected]>
Cc Mike Maloney <[email protected]>
Cc Jarno Rajahalme <[email protected]>
Cc [email protected]
Signed-off-by Kees Cook <[email protected]>

Applied.