Author: markj
Date: Fri Oct 30 17:05:36 2020
New Revision: 367174
URL: https://svnweb.freebsd.org/changeset/base/367174

Log:
  opencrypto: Annotate hmac_init_(i|o)pad() to make auth_hash const
  
  This makes them friendlier to drivers that try to use const pointers
  whenever possible in their internal structures.
  
  Reviewed by:  jhb
  Sponsored by: Rubicon Communications, LLC (Netgate)
  Differential Revision:        https://reviews.freebsd.org/D26901

Modified:
  head/sys/opencrypto/crypto.c
  head/sys/opencrypto/cryptodev.h

Modified: head/sys/opencrypto/crypto.c
==============================================================================
--- head/sys/opencrypto/crypto.c        Fri Oct 30 15:43:52 2020        
(r367173)
+++ head/sys/opencrypto/crypto.c        Fri Oct 30 17:05:36 2020        
(r367174)
@@ -411,8 +411,8 @@ crypto_terminate(struct proc **pp, void *q)
 }
 
 static void
-hmac_init_pad(struct auth_hash *axf, const char *key, int klen, void *auth_ctx,
-    uint8_t padval)
+hmac_init_pad(const struct auth_hash *axf, const char *key, int klen,
+    void *auth_ctx, uint8_t padval)
 {
        uint8_t hmac_key[HMAC_MAX_BLOCK_LEN];
        u_int i;
@@ -442,7 +442,7 @@ hmac_init_pad(struct auth_hash *axf, const char *key, 
 }
 
 void
-hmac_init_ipad(struct auth_hash *axf, const char *key, int klen,
+hmac_init_ipad(const struct auth_hash *axf, const char *key, int klen,
     void *auth_ctx)
 {
 
@@ -450,7 +450,7 @@ hmac_init_ipad(struct auth_hash *axf, const char *key,
 }
 
 void
-hmac_init_opad(struct auth_hash *axf, const char *key, int klen,
+hmac_init_opad(const struct auth_hash *axf, const char *key, int klen,
     void *auth_ctx)
 {
 

Modified: head/sys/opencrypto/cryptodev.h
==============================================================================
--- head/sys/opencrypto/cryptodev.h     Fri Oct 30 15:43:52 2020        
(r367173)
+++ head/sys/opencrypto/cryptodev.h     Fri Oct 30 17:05:36 2020        
(r367174)
@@ -683,9 +683,9 @@ SYSCTL_DECL(_kern_crypto);
 /* Helper routines for drivers to initialize auth contexts for HMAC. */
 struct auth_hash;
 
-void   hmac_init_ipad(struct auth_hash *axf, const char *key, int klen,
+void   hmac_init_ipad(const struct auth_hash *axf, const char *key, int klen,
     void *auth_ctx);
-void   hmac_init_opad(struct auth_hash *axf, const char *key, int klen,
+void   hmac_init_opad(const struct auth_hash *axf, const char *key, int klen,
     void *auth_ctx);
 
 /*
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