Remove define for KRB5_CKSUM_LENGTH, which will become enctype-dependent

cleanup: When adding new encryption types, the checksum length
can be different for each enctype.  Face the fact that the
current code only supports DES which has a checksum length of 8.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

include/linux/sunrpc/gss_krb5.h

@@ -70,8 +70,6 @@ enum seal_alg {
 	SEAL_ALG_DES3KD = 0x0002
 };
 
-#define KRB5_CKSUM_LENGTH 8
-
 #define CKSUMTYPE_CRC32			0x0001
 #define CKSUMTYPE_RSA_MD4		0x0002
 #define CKSUMTYPE_RSA_MD4_DES		0x0003

net/sunrpc/auth_gss/gss_krb5_seal.c

@@ -109,8 +109,7 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
 			  md5cksum.data, md5cksum.len))
 		return GSS_S_FAILURE;
 
-	memcpy(krb5_hdr + 16, md5cksum.data + md5cksum.len - KRB5_CKSUM_LENGTH,
-	       KRB5_CKSUM_LENGTH);
+	memcpy(krb5_hdr + 16, md5cksum.data + md5cksum.len - 8, 8);
 
 	spin_lock(&krb5_seq_lock);
 	seq_send = ctx->seq_send++;

net/sunrpc/auth_gss/gss_krb5_wrap.c

@@ -176,9 +176,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
 	if (krb5_encrypt(kctx->seq, NULL, md5cksum.data,
 			  md5cksum.data, md5cksum.len))
 		return GSS_S_FAILURE;
-	memcpy(krb5_hdr + 16,
-	       md5cksum.data + md5cksum.len - KRB5_CKSUM_LENGTH,
-	       KRB5_CKSUM_LENGTH);
+	memcpy(krb5_hdr + 16, md5cksum.data + md5cksum.len - 8, 8);
 
 	spin_lock(&krb5_seq_lock);
 	seq_send = kctx->seq_send++;