| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_IF_HSR_H_ |
| #define _LINUX_IF_HSR_H_ |
| |
| /* used to differentiate various protocols */ |
| enum hsr_version { |
| HSR_V0 = 0, |
| HSR_V1, |
| 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); |
| #else |
| static inline bool is_hsr_master(struct net_device *dev) |
| { |
| return false; |
| } |
| static inline int hsr_get_version(struct net_device *dev, |
| enum hsr_version *ver) |
| { |
| return -EINVAL; |
| } |
| #endif /* CONFIG_HSR */ |
| |
| #endif /*_LINUX_IF_HSR_H_*/ |
