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seg6_hmac.h

seg6_hmac.h 1.4 KB
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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
    2. 

  2. /*
    3. 

  3.  *  SR-IPv6 implementation
    4. 

  4.  *
    5. 

  5.  *  Author:
    6. 

  6.  *  David Lebrun <[email protected]>
    7. 

  7.  */
    8. 

  8. 

  9. #ifndef _NET_SEG6_HMAC_H
    10. 

  10. #define _NET_SEG6_HMAC_H
    11. 

  11. 

  12. #include <net/flow.h>
    13. 

  13. #include <net/ip6_fib.h>
    14. 

  14. #include <net/sock.h>
    15. 

  15. #include <linux/ip.h>
    16. 

  16. #include <linux/ipv6.h>
    17. 

  17. #include <linux/route.h>
    18. 

  18. #include <net/seg6.h>
    19. 

  19. #include <linux/seg6_hmac.h>
    20. 

  20. #include <linux/rhashtable-types.h>
    21. 

  21. 

  22. #define SEG6_HMAC_MAX_DIGESTSIZE	160
    23. 

  23. #define SEG6_HMAC_RING_SIZE		256
    24. 

  24. 

  25. struct seg6_hmac_info {
    26. 

  26. 	struct rhash_head node;
    27. 

  27. 	struct rcu_head rcu;
    28. 

  28. 

  29. 	u32 hmackeyid;
    30. 

  30. 	char secret[SEG6_HMAC_SECRET_LEN];
    31. 

  31. 	u8 slen;
    32. 

  32. 	u8 alg_id;
    33. 

  33. };
    34. 

  34. 

  35. struct seg6_hmac_algo {
    36. 

  36. 	u8 alg_id;
    37. 

  37. 	char name[64];
    38. 

  38. 	struct crypto_shash * __percpu *tfms;
    39. 

  39. 	struct shash_desc * __percpu *shashs;
    40. 

  40. };
    41. 

  41. 

  42. extern int seg6_hmac_compute(struct seg6_hmac_info *hinfo,
    43. 

  43. 			     struct ipv6_sr_hdr *hdr, struct in6_addr *saddr,
    44. 

  44. 			     u8 *output);
    45. 

  45. extern struct seg6_hmac_info *seg6_hmac_info_lookup(struct net *net, u32 key);
    46. 

  46. extern int seg6_hmac_info_add(struct net *net, u32 key,
    47. 

  47. 			      struct seg6_hmac_info *hinfo);
    48. 

  48. extern int seg6_hmac_info_del(struct net *net, u32 key);
    49. 

  49. extern int seg6_push_hmac(struct net *net, struct in6_addr *saddr,
    50. 

  50. 			  struct ipv6_sr_hdr *srh);
    51. 

  51. extern bool seg6_hmac_validate_skb(struct sk_buff *skb);
    52. 

  52. extern int seg6_hmac_init(void);
    53. 

  53. extern void seg6_hmac_exit(void);
    54. 

  54. extern int seg6_hmac_net_init(struct net *net);
    55. 

  55. extern void seg6_hmac_net_exit(struct net *net);
    56. 

  56. 

  57. #endif
    58.