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| author | Vadim Kochan <vadim4j@gmail.com> | 2015-08-17 00:21:30 +0300 |
|---|---|---|
| committer | Tobias Klauser <tklauser@distanz.ch> | 2015-08-17 09:43:27 +0200 |
| commit | f4b90d0194cdb5275823116b2229c04249225d7e (patch) | |
| tree | 703e59f323c3e9875aec66f764b365c88f8391cc /proto_vlan.h | |
| parent | 69cb4a22c8bbe841ec3b0bf1983610548f4dce74 (diff) | |
netsniff-ng: vlan: Use helpers when parse vlan header
Add proto_vlan.h with helpers to parse VLAN fields.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'proto_vlan.h')
| -rw-r--r-- | proto_vlan.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/proto_vlan.h b/proto_vlan.h new file mode 100644 index 0000000..dc31cfa --- /dev/null +++ b/proto_vlan.h @@ -0,0 +1,27 @@ +/* + * proto_vlan.h - VLAN proto helpers & declarations + * Subject to the GPL, version 2. + */ + +#ifndef PROTO_VLAN_H +#define PROTO_VLAN_H + +#include <stdbool.h> +#include <inttypes.h> + +static inline uint16_t vlan_tci2prio(uint16_t tci) +{ + return (tci & 0xe000) >> 13; +} + +static inline uint16_t vlan_tci2cfi(uint16_t tci) +{ + return (tci & 0x1000) >> 12; +} + +static inline uint16_t vlan_tci2vid(uint16_t tci) +{ + return tci & 0x0fff; +} + +#endif |