[PATCH 26/28] gss_krb5: pass struct krb5_ctx pointer to sequence number functions

[Kevin Coffman]

For the arcfour-hmac support, the make_seq_num and get_seq_num functions
need access to the kerberos context structure.  This will be used in a
later patch.

Signed-off-by: Kevin Coffman <kwc at citi.umich.edu>
---

 include/linux/sunrpc/gss_krb5.h       |    6 ++++--
 net/sunrpc/auth_gss/gss_krb5_seal.c   |    2 +-
 net/sunrpc/auth_gss/gss_krb5_seqnum.c |    6 ++++--
 net/sunrpc/auth_gss/gss_krb5_unseal.c |    3 ++-
 net/sunrpc/auth_gss/gss_krb5_wrap.c   |    6 +++---
 5 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h
index 0afa22f..57b3686 100644
--- a/include/linux/sunrpc/gss_krb5.h
+++ b/include/linux/sunrpc/gss_krb5.h
@@ -258,12 +258,14 @@ gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
 		    int offset);
 
 s32
-krb5_make_seq_num(struct crypto_blkcipher *key,
+krb5_make_seq_num(struct krb5_ctx *kctx,
+		struct crypto_blkcipher *key,
 		int direction,
 		u32 seqnum, unsigned char *cksum, unsigned char *buf);
 
 s32
-krb5_get_seq_num(struct crypto_blkcipher *key,
+krb5_get_seq_num(struct krb5_ctx *kctx,
+	       struct crypto_blkcipher *key,
 	       unsigned char *cksum,
 	       unsigned char *buf, int *direction, u32 *seqnum);
 
diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c
index 554f92c..34f6671 100644
--- a/net/sunrpc/auth_gss/gss_krb5_seal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_seal.c
@@ -153,7 +153,7 @@ gss_get_mic_v1(struct krb5_ctx *ctx, struct xdr_buf *text,
 	seq_send = ctx->seq_send++;
 	spin_unlock(&krb5_seq_lock);
 
-	if (krb5_make_seq_num(ctx->seq, ctx->initiate ? 0 : 0xff,
+	if (krb5_make_seq_num(ctx, ctx->seq, ctx->initiate ? 0 : 0xff,
 			      seq_send, krb5_hdr + 16, krb5_hdr + 8))
 		return GSS_S_FAILURE;
 
diff --git a/net/sunrpc/auth_gss/gss_krb5_seqnum.c b/net/sunrpc/auth_gss/gss_krb5_seqnum.c
index f160be6..c7b196d 100644
--- a/net/sunrpc/auth_gss/gss_krb5_seqnum.c
+++ b/net/sunrpc/auth_gss/gss_krb5_seqnum.c
@@ -41,7 +41,8 @@
 #endif
 
 s32
-krb5_make_seq_num(struct crypto_blkcipher *key,
+krb5_make_seq_num(struct krb5_ctx *kctx,
+		struct crypto_blkcipher *key,
 		int direction,
 		u32 seqnum,
 		unsigned char *cksum, unsigned char *buf)
@@ -62,7 +63,8 @@ krb5_make_seq_num(struct crypto_blkcipher *key,
 }
 
 s32
-krb5_get_seq_num(struct crypto_blkcipher *key,
+krb5_get_seq_num(struct krb5_ctx *kctx,
+	       struct crypto_blkcipher *key,
 	       unsigned char *cksum,
 	       unsigned char *buf,
 	       int *direction, u32 *seqnum)
diff --git a/net/sunrpc/auth_gss/gss_krb5_unseal.c b/net/sunrpc/auth_gss/gss_krb5_unseal.c
index a61717e..24c143f 100644
--- a/net/sunrpc/auth_gss/gss_krb5_unseal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_unseal.c
@@ -131,7 +131,8 @@ gss_verify_mic_v1(struct krb5_ctx *ctx,
 
 	/* do sequencing checks */
 
-	if (krb5_get_seq_num(ctx->seq, ptr + 14, ptr + 6, &direction, &seqnum))
+	if (krb5_get_seq_num(ctx, ctx->seq, ptr + 14, ptr + 6,
+			     &direction, &seqnum))
 		return GSS_S_FAILURE;
 
 	if ((ctx->initiate && direction != 0xff) ||
diff --git a/net/sunrpc/auth_gss/gss_krb5_wrap.c b/net/sunrpc/auth_gss/gss_krb5_wrap.c
index f754d8c..701df35 100644
--- a/net/sunrpc/auth_gss/gss_krb5_wrap.c
+++ b/net/sunrpc/auth_gss/gss_krb5_wrap.c
@@ -196,7 +196,7 @@ gss_wrap_kerberos_v1(struct krb5_ctx *kctx, int offset,
 
 	/* XXX would probably be more efficient to compute checksum
 	 * and encrypt at the same time: */
-	if ((krb5_make_seq_num(kctx->seq, kctx->initiate ? 0 : 0xff,
+	if ((krb5_make_seq_num(kctx, kctx->seq, kctx->initiate ? 0 : 0xff,
 			       seq_send, krb5_hdr + 16, krb5_hdr + 8)))
 		return GSS_S_FAILURE;
 
@@ -282,8 +282,8 @@ gss_unwrap_kerberos_v1(struct krb5_ctx *kctx, int offset, struct xdr_buf *buf)
 
 	/* do sequencing checks */
 
-	if (krb5_get_seq_num(kctx->seq, ptr + 14, ptr + 6, &direction,
-				    &seqnum))
+	if (krb5_get_seq_num(kctx, kctx->seq, ptr + 14, ptr + 6,
+			     &direction, &seqnum))
 		return GSS_S_BAD_SIG;
 
 	if ((kctx->initiate && direction != 0xff) ||