?????????? ????????? - ??????????????? - /usr/src/kernels/5.14.0-611.9.1.el9_7.x86_64/include/linux/if_hsr.h
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/* SPDX-License-Identifier: GPL-2.0 */ #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, 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_*/
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