diff options
| author | Rostislav Lisovy <lisovy@gmail.com> | 2012-07-04 05:32:03 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2012-07-04 13:07:05 +0200 |
| commit | f057bbb6f9ed0fb61ea11105c9ef0ed5ac1a354d (patch) | |
| tree | d1a3ce318ee81fec79aea757633e68612f04bbd9 /include | |
| parent | 30c1e672044d98e5c4cff5fcbdb34b55a2df0c0f (diff) | |
net: em_canid: Ematch rule to match CAN frames according to their identifiers
This ematch makes it possible to classify CAN frames (AF_CAN) according
to their identifiers. This functionality can not be easily achieved with
existing classifiers, such as u32, because CAN identifier is always stored
in native endianness, whereas u32 expects Network byte order.
Signed-off-by: Rostislav Lisovy <lisovy@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/can.h | 3 | ||||
| -rw-r--r-- | include/linux/pkt_cls.h | 5 |
2 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/can.h b/include/linux/can.h index 1a66cf6112ae..018055efc034 100644 --- a/include/linux/can.h +++ b/include/linux/can.h @@ -38,6 +38,9 @@ */ typedef __u32 canid_t; +#define CAN_SFF_ID_BITS 11 +#define CAN_EFF_ID_BITS 29 + /* * Controller Area Network Error Message Frame Mask structure * diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h index defbde203d07..38fbd4bc20ab 100644 --- a/include/linux/pkt_cls.h +++ b/include/linux/pkt_cls.h @@ -451,8 +451,9 @@ enum { #define TCF_EM_U32 3 #define TCF_EM_META 4 #define TCF_EM_TEXT 5 -#define TCF_EM_VLAN 6 -#define TCF_EM_MAX 6 +#define TCF_EM_VLAN 6 +#define TCF_EM_CANID 7 +#define TCF_EM_MAX 7 enum { TCF_EM_PROG_TC |