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auth.h
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command.h
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constants.h
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Code Editor : auth.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* SCTP kernel implementation * (C) Copyright 2007 Hewlett-Packard Development Company, L.P. * * This file is part of the SCTP kernel implementation * * Please send any bug reports or fixes you make to the * email address(es): * lksctp developers <linux-sctp@vger.kernel.org> * * Written or modified by: * Vlad Yasevich <vladislav.yasevich@hp.com> */ #ifndef __sctp_auth_h__ #define __sctp_auth_h__ #include <linux/list.h> #include <linux/refcount.h> struct sctp_endpoint; struct sctp_association; struct sctp_authkey; struct sctp_hmacalgo; struct crypto_shash; /* * Define a generic struct that will hold all the info * necessary for an HMAC transform */ struct sctp_hmac { __u16 hmac_id; /* one of the above ids */ char *hmac_name; /* name for loading */ __u16 hmac_len; /* length of the signature */ }; /* This is generic structure that containst authentication bytes used * as keying material. It's a what is referred to as byte-vector all * over SCTP-AUTH */ struct sctp_auth_bytes { refcount_t refcnt; __u32 len; __u8 data[]; }; /* Definition for a shared key, weather endpoint or association */ struct sctp_shared_key { struct list_head key_list; struct sctp_auth_bytes *key; refcount_t refcnt; __u16 key_id; __u8 deactivated; }; #define key_for_each(__key, __list_head) \ list_for_each_entry(__key, __list_head, key_list) #define key_for_each_safe(__key, __tmp, __list_head) \ list_for_each_entry_safe(__key, __tmp, __list_head, key_list) static inline void sctp_auth_key_hold(struct sctp_auth_bytes *key) { if (!key) return; refcount_inc(&key->refcnt); } void sctp_auth_key_put(struct sctp_auth_bytes *key); struct sctp_shared_key *sctp_auth_shkey_create(__u16 key_id, gfp_t gfp); void sctp_auth_destroy_keys(struct list_head *keys); int sctp_auth_asoc_init_active_key(struct sctp_association *asoc, gfp_t gfp); struct sctp_shared_key *sctp_auth_get_shkey( const struct sctp_association *asoc, __u16 key_id); int sctp_auth_asoc_copy_shkeys(const struct sctp_endpoint *ep, struct sctp_association *asoc, gfp_t gfp); int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp); void sctp_auth_destroy_hmacs(struct crypto_shash *auth_hmacs[]); struct sctp_hmac *sctp_auth_get_hmac(__u16 hmac_id); struct sctp_hmac *sctp_auth_asoc_get_hmac(const struct sctp_association *asoc); void sctp_auth_asoc_set_default_hmac(struct sctp_association *asoc, struct sctp_hmac_algo_param *hmacs); int sctp_auth_asoc_verify_hmac_id(const struct sctp_association *asoc, __be16 hmac_id); int sctp_auth_send_cid(enum sctp_cid chunk, const struct sctp_association *asoc); int sctp_auth_recv_cid(enum sctp_cid chunk, const struct sctp_association *asoc); void sctp_auth_calculate_hmac(const struct sctp_association *asoc, struct sk_buff *skb, struct sctp_auth_chunk *auth, struct sctp_shared_key *ep_key, gfp_t gfp); void sctp_auth_shkey_release(struct sctp_shared_key *sh_key); void sctp_auth_shkey_hold(struct sctp_shared_key *sh_key); /* API Helpers */ int sctp_auth_ep_add_chunkid(struct sctp_endpoint *ep, __u8 chunk_id); int sctp_auth_ep_set_hmacs(struct sctp_endpoint *ep, struct sctp_hmacalgo *hmacs); int sctp_auth_set_key(struct sctp_endpoint *ep, struct sctp_association *asoc, struct sctp_authkey *auth_key); int sctp_auth_set_active_key(struct sctp_endpoint *ep, struct sctp_association *asoc, __u16 key_id); int sctp_auth_del_key_id(struct sctp_endpoint *ep, struct sctp_association *asoc, __u16 key_id); int sctp_auth_deact_key_id(struct sctp_endpoint *ep, struct sctp_association *asoc, __u16 key_id); int sctp_auth_init(struct sctp_endpoint *ep, gfp_t gfp); void sctp_auth_free(struct sctp_endpoint *ep); #endif
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