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authorOliver Hartkopp <oliver@hartkopp.net>2008-12-03 15:52:35 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-03 15:52:35 -0800
commitd253eee20195b25e298bf162a6e72f14bf4803e5 (patch)
tree4fd5fef75d52ecae3f41dbd9ae62436e917e1699 /net/can/bcm.c
parentbd7df219202f44e71e2e975a0fb5f76f946c1aef (diff)
downloadop-kernel-dev-d253eee20195b25e298bf162a6e72f14bf4803e5.zip
op-kernel-dev-d253eee20195b25e298bf162a6e72f14bf4803e5.tar.gz
can: Fix CAN_(EFF|RTR)_FLAG handling in can_filter
Due to a wrong safety check in af_can.c it was not possible to filter for SFF frames with a specific CAN identifier without getting the same selected CAN identifier from a received EFF frame also. This fix has a minimum (but user visible) impact on the CAN filter API and therefore the CAN version is set to a new date. Indeed the 'old' API is still working as-is. But when now setting CAN_(EFF|RTR)_FLAG in can_filter.can_mask you might get less traffic than before - but still the stuff that you expected to get for your defined filter ... Thanks to Kurt Van Dijck for pointing at this issue and for the review. Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can/bcm.c')
-rw-r--r--net/can/bcm.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c
index d0dd382..da0d426 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -64,10 +64,11 @@
#define BCM_CAN_DLC_MASK 0x0F /* clean private flags in can_dlc by masking */
/* get best masking value for can_rx_register() for a given single can_id */
-#define REGMASK(id) ((id & CAN_RTR_FLAG) | ((id & CAN_EFF_FLAG) ? \
- (CAN_EFF_MASK | CAN_EFF_FLAG) : CAN_SFF_MASK))
+#define REGMASK(id) ((id & CAN_EFF_FLAG) ? \
+ (CAN_EFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG) : \
+ (CAN_SFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG))
-#define CAN_BCM_VERSION "20080415"
+#define CAN_BCM_VERSION CAN_VERSION
static __initdata const char banner[] = KERN_INFO
"can: broadcast manager protocol (rev " CAN_BCM_VERSION ")\n";
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