diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2015-02-23 20:37:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 15:06:54 +0100 |
| commit | 3cc97c83e2051584120819e40e7b0ce4dadf0925 (patch) | |
| tree | 06715f03ec34fb961e25f119064e63f4ed415a61 | |
| parent | 49f3df5bdeb22ca0258b9ce90365aeb0e2ba041e (diff) | |
can: add missing initialisations in CAN related skbuffs
commit 969439016d2cf61fef53a973d7e6d2061c3793b1 upstream.
When accessing CAN network interfaces with AF_PACKET sockets e.g. by dhclient
this can lead to a skb_under_panic due to missing skb initialisations.
Add the missing initialisations at the CAN skbuff creation times on driver
level (rx path) and in the network layer (tx path).
Reported-by: Austin Schuh <austin@peloton-tech.com>
Reported-by: Daniel Steer <daniel.steer@mclaren.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/can/dev.c | 8 | ||||
| -rw-r--r-- | net/can/af_can.c | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index 1468c4658804..84ad2b44377c 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -502,6 +502,14 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf) skb->pkt_type = PACKET_BROADCAST; skb->ip_summed = CHECKSUM_UNNECESSARY; + skb_reset_mac_header(skb); + skb_reset_network_header(skb); + skb_reset_transport_header(skb); + + skb_reset_mac_header(skb); + skb_reset_network_header(skb); + skb_reset_transport_header(skb); + can_skb_reserve(skb); can_skb_prv(skb)->ifindex = dev->ifindex; diff --git a/net/can/af_can.c b/net/can/af_can.c index a27f8aad9e99..5e9a2272b7a7 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -262,6 +262,9 @@ int can_send(struct sk_buff *skb, int loop) goto inval_skb; } + skb->ip_summed = CHECKSUM_UNNECESSARY; + + skb_reset_mac_header(skb); skb_reset_network_header(skb); skb_reset_transport_header(skb); |