projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| dcf0cd1c GM |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_IF_HSR_H_ | |
| 3 | #define _LINUX_IF_HSR_H_ | |
| 4 | ||
| 5f10376b JK |
5 | #include <linux/types.h> |
| 6 | ||
| 7 | struct net_device; | |
| 8 | ||
| dcf0cd1c GM |
9 | /* used to differentiate various protocols */ |
| 10 | enum hsr_version { | |
| 11 | HSR_V0 = 0, | |
| 12 | HSR_V1, | |
| 13 | PRP_V1, | |
| 14 | }; | |
| 15 | ||
| bf08824a KK |
16 | /* HSR Tag. |
| 17 | * As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB, | |
| 18 | * path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest, | |
| 19 | * h_source, h_proto = 0x88FB }, and add { path, LSDU_size, sequence Nr, | |
| 20 | * encapsulated protocol } instead. | |
| 21 | * | |
| 22 | * Field names as defined in the IEC:2010 standard for HSR. | |
| 23 | */ | |
| 24 | struct hsr_tag { | |
| 25 | __be16 path_and_LSDU_size; | |
| 26 | __be16 sequence_nr; | |
| 27 | __be16 encap_proto; | |
| 28 | } __packed; | |
| 29 | ||
| 30 | #define HSR_HLEN 6 | |
| 31 | ||
| dcf0cd1c GM |
32 | #if IS_ENABLED(CONFIG_HSR) |
| 33 | extern bool is_hsr_master(struct net_device *dev); | |
| 34 | extern int hsr_get_version(struct net_device *dev, enum hsr_version *ver); | |
| 35 | #else | |
| 36 | static inline bool is_hsr_master(struct net_device *dev) | |
| 37 | { | |
| 38 | return false; | |
| 39 | } | |
| 40 | static inline int hsr_get_version(struct net_device *dev, | |
| 41 | enum hsr_version *ver) | |
| 42 | { | |
| 43 | return -EINVAL; | |
| 44 | } | |
| 45 | #endif /* CONFIG_HSR */ | |
| 46 | ||
| 47 | #endif /*_LINUX_IF_HSR_H_*/ |