rpcgss: krb5: kill checksum_type, miscellaneous small cleanup

Previous changes reveal some obvious cruft.
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/auth_gss/gss_krb5_seal.c

@@ -77,7 +77,6 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
 		struct xdr_netobj *token)
 {
 	struct krb5_ctx		*ctx = gss_ctx->internal_ctx_id;
-	s32			checksum_type;
 	char			cksumdata[16];
 	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
 	unsigned char		*ptr, *krb5_hdr, *msg_start;
@@ -88,7 +87,6 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
 
 	now = get_seconds();
 
-	checksum_type = CKSUMTYPE_RSA_MD5;
 	if (ctx->sealalg != SEAL_ALG_NONE && ctx->sealalg != SEAL_ALG_DES) {
 		dprintk("RPC:      gss_krb5_seal: ctx->sealalg %d not supported\n",
 			ctx->sealalg);
@@ -110,7 +108,7 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
 	*(__be16 *)(krb5_hdr + 2) = htons(SGN_ALG_DES_MAC_MD5);
 	memset(krb5_hdr + 4, 0xff, 4);
 
-	if (make_checksum(checksum_type, krb5_hdr, 8, text, 0, &md5cksum))
+	if (make_checksum(CKSUMTYPE_RSA_MD5, krb5_hdr, 8, text, 0, &md5cksum))
 		goto out_err;
 
 	if (krb5_encrypt(ctx->seq, NULL, md5cksum.data,

net/sunrpc/auth_gss/gss_krb5_unseal.c

@@ -78,7 +78,6 @@ gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
 	struct krb5_ctx		*ctx = gss_ctx->internal_ctx_id;
 	int			signalg;
 	int			sealalg;
-	s32			checksum_type;
 	char			cksumdata[16];
 	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
 	s32			now;
@@ -115,12 +114,7 @@ gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
 	if (signalg != SGN_ALG_DES_MAC_MD5)
 		goto out;
 
-	/* compute the checksum of the message */
-
-	/* initialize the the cksum */
-	checksum_type = CKSUMTYPE_RSA_MD5;
-
-	ret = make_checksum(checksum_type, ptr - 2, 8,
+	ret = make_checksum(CKSUMTYPE_RSA_MD5, ptr - 2, 8,
 				 message_buffer, 0, &md5cksum);
 	if (ret)
 		goto out;

net/sunrpc/auth_gss/gss_krb5_wrap.c

@@ -120,7 +120,6 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
 		struct xdr_buf *buf, struct page **pages)
 {
 	struct krb5_ctx		*kctx = ctx->internal_ctx_id;
-	s32			checksum_type;
 	char			cksumdata[16];
 	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
 	int			blocksize = 0, plainlen;
@@ -134,7 +133,6 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
 
 	now = get_seconds();
 
-	checksum_type = CKSUMTYPE_RSA_MD5;
 	if (kctx->sealalg != SEAL_ALG_NONE && kctx->sealalg != SEAL_ALG_DES) {
 		dprintk("RPC:      gss_krb5_seal: kctx->sealalg %d not supported\n",
 			kctx->sealalg);
@@ -178,7 +176,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
 	/* XXXJBF: UGH!: */
 	tmp_pages = buf->pages;
 	buf->pages = pages;
-	if (make_checksum(checksum_type, krb5_hdr, 8, buf,
+	if (make_checksum(CKSUMTYPE_RSA_MD5, krb5_hdr, 8, buf,
 				offset + headlen - blocksize, &md5cksum))
 		goto out_err;
 	buf->pages = tmp_pages;
@@ -215,7 +213,6 @@ gss_unwrap_kerberos(struct gss_ctx *ctx, int offset, struct xdr_buf *buf)
 	struct krb5_ctx		*kctx = ctx->internal_ctx_id;
 	int			signalg;
 	int			sealalg;
-	s32			checksum_type;
 	char			cksumdata[16];
 	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
 	s32			now;
@@ -275,12 +272,7 @@ gss_unwrap_kerberos(struct gss_ctx *ctx, int offset, struct xdr_buf *buf)
 			ptr + 22 - (unsigned char *)buf->head[0].iov_base))
 		goto out;
 
-	/* compute the checksum of the message */
-
-	/* initialize the the cksum */
-	checksum_type = CKSUMTYPE_RSA_MD5;
-
-	ret = make_checksum(checksum_type, ptr - 2, 8, buf,
+	ret = make_checksum(CKSUMTYPE_RSA_MD5, ptr - 2, 8, buf,
 		 ptr + 22 - (unsigned char *)buf->head[0].iov_base, &md5cksum);
 	if (ret)
 		goto out;