diff options
Diffstat (limited to 'include/linux/if_hsr.h')
| -rw-r--r-- | include/linux/if_hsr.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/if_hsr.h b/include/linux/if_hsr.h index 38bbc537d4e4..0404f5bf4f30 100644 --- a/include/linux/if_hsr.h +++ b/include/linux/if_hsr.h @@ -2,6 +2,10 @@ #ifndef _LINUX_IF_HSR_H_ #define _LINUX_IF_HSR_H_ +#include <linux/types.h> + +struct net_device; + /* used to differentiate various protocols */ enum hsr_version { HSR_V0 = 0, @@ -9,6 +13,22 @@ enum hsr_version { PRP_V1, }; +/* HSR Tag. + * As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB, + * path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest, + * h_source, h_proto = 0x88FB }, and add { path, LSDU_size, sequence Nr, + * encapsulated protocol } instead. + * + * Field names as defined in the IEC:2010 standard for HSR. + */ +struct hsr_tag { + __be16 path_and_LSDU_size; + __be16 sequence_nr; + __be16 encap_proto; +} __packed; + +#define HSR_HLEN 6 + #if IS_ENABLED(CONFIG_HSR) extern bool is_hsr_master(struct net_device *dev); extern int hsr_get_version(struct net_device *dev, enum hsr_version *ver); |