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authorOliver Hartkopp <socketcan@hartkopp.net>2014-01-30 10:11:28 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-30 16:25:49 -0800
commit0ae89beb283a0db5980d1d4781c7d7be2f2810d6 (patch)
tree70260be9219b03dbc8e96f852a8900db7845cbc9 /net/can/af_can.c
parent920a0fde5a32fd40b4d3c94ad72f7fc7039db8e3 (diff)
can: add destructor for self generated skbs
Self generated skbuffs in net/can/bcm.c are setting a skb->sk reference but no explicit destructor which is enforced since Linux 3.11 with commit 376c7311bdb6 (net: add a temporary sanity check in skb_orphan()). This patch adds some helper functions to make sure that a destructor is properly defined when a sock reference is assigned to a CAN related skb. To create an unshared skb owned by the original sock a common helper function has been introduced to replace open coded functions to create CAN echo skbs. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Tested-by: Andre Naujoks <nautsch2@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can/af_can.c')
-rw-r--r--net/can/af_can.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c
index d249874a366d..a27f8aad9e99 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -57,6 +57,7 @@
#include <linux/skbuff.h>
#include <linux/can.h>
#include <linux/can/core.h>
+#include <linux/can/skb.h>
#include <linux/ratelimit.h>
#include <net/net_namespace.h>
#include <net/sock.h>
@@ -290,7 +291,7 @@ int can_send(struct sk_buff *skb, int loop)
return -ENOMEM;
}
- newskb->sk = skb->sk;
+ can_skb_set_owner(newskb, skb->sk);
newskb->ip_summed = CHECKSUM_UNNECESSARY;
newskb->pkt_type = PACKET_BROADCAST;
}