net: ipv6: mld: introduce mld_{gq, ifc, dad}_stop_timer functions

We already have mld_{gq,ifc,dad}_start_timer() functions, so introduce
mld_{gq,ifc,dad}_stop_timer() functions to reduce code size and make it
more readable.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 25 insertions, 16 deletions

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 04399cb71e14..096cd67b737c 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1006,6 +1006,13 @@ static void mld_gq_start_timer(struct inet6_dev *idev)
                 in6_dev_hold(idev);
 }
 
+static void mld_gq_stop_timer(struct inet6_dev *idev)
+{
+        idev->mc_gq_running = 0;
+        if (del_timer(&idev->mc_gq_timer))
+                __in6_dev_put(idev);
+}
+
 static void mld_ifc_start_timer(struct inet6_dev *idev, unsigned long delay)
 {
         unsigned long tv = net_random() % delay;
@@ -1014,6 +1021,13 @@ static void mld_ifc_start_timer(struct inet6_dev *idev, unsigned long delay)
                 in6_dev_hold(idev);
 }
 
+static void mld_ifc_stop_timer(struct inet6_dev *idev)
+{
+        idev->mc_ifc_count = 0;
+        if (del_timer(&idev->mc_ifc_timer))
+                __in6_dev_put(idev);
+}
+
 static void mld_dad_start_timer(struct inet6_dev *idev, unsigned long delay)
 {
         unsigned long tv = net_random() % delay;
@@ -1022,6 +1036,12 @@ static void mld_dad_start_timer(struct inet6_dev *idev, unsigned long delay)
                 in6_dev_hold(idev);
 }
 
+static void mld_dad_stop_timer(struct inet6_dev *idev)
+{
+        if (del_timer(&idev->mc_dad_timer))
+                __in6_dev_put(idev);
+}
+
 /*
  *      IGMP handling (alias multicast ICMPv6 messages)
  */
@@ -1234,15 +1254,9 @@ static int mld_process_v1(struct inet6_dev *idev, struct mld_msg *mld,
         mld_set_v1_mode(idev);
 
         /* cancel MLDv2 report timer */
-        idev->mc_gq_running = 0;
-        if (del_timer(&idev->mc_gq_timer))
-                __in6_dev_put(idev);
-
+        mld_gq_stop_timer(idev);
         /* cancel the interface change timer */
-        idev->mc_ifc_count = 0;
-        if (del_timer(&idev->mc_ifc_timer))
-                __in6_dev_put(idev);
-
+        mld_ifc_stop_timer(idev);
         /* clear deleted report items */
         mld_clear_delrec(idev);
 
@@ -2434,14 +2448,9 @@ void ipv6_mc_down(struct inet6_dev *idev)
         /* Withdraw multicast list */
 
         read_lock_bh(&idev->lock);
-        idev->mc_ifc_count = 0;
-        if (del_timer(&idev->mc_ifc_timer))
-                __in6_dev_put(idev);
-        idev->mc_gq_running = 0;
-        if (del_timer(&idev->mc_gq_timer))
-                __in6_dev_put(idev);
-        if (del_timer(&idev->mc_dad_timer))
-                __in6_dev_put(idev);
+        mld_ifc_stop_timer(idev);
+        mld_gq_stop_timer(idev);
+        mld_dad_stop_timer(idev);
 
         for (i = idev->mc_list; i; i=i->next)
                 igmp6_group_dropped(i);