gss_krb5: consistently use unsigned for seqnum

Consistently use unsigned (u32 vs. s32) for seqnum.

In get_mic function, send the local copy of seq_send,
rather than the context version.
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

@@ -148,9 +148,9 @@ gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
 s32
 krb5_make_seq_num(struct crypto_blkcipher *key,
 		int direction,
-		s32 seqnum, unsigned char *cksum, unsigned char *buf);
+		u32 seqnum, unsigned char *cksum, unsigned char *buf);
 
 s32
 krb5_get_seq_num(struct crypto_blkcipher *key,
 	       unsigned char *cksum,
-	       unsigned char *buf, int *direction, s32 * seqnum);
+	       unsigned char *buf, int *direction, u32 *seqnum);

net/sunrpc/auth_gss/gss_krb5_seal.c

@@ -116,7 +116,7 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
 	spin_unlock(&krb5_seq_lock);
 
 	if (krb5_make_seq_num(ctx->seq, ctx->initiate ? 0 : 0xff,
-			       ctx->seq_send, krb5_hdr + 16, krb5_hdr + 8))
+			      seq_send, krb5_hdr + 16, krb5_hdr + 8))
 		return GSS_S_FAILURE;
 
 	return (ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;

net/sunrpc/auth_gss/gss_krb5_seqnum.c

@@ -43,7 +43,7 @@
 s32
 krb5_make_seq_num(struct crypto_blkcipher *key,
 		int direction,
-		s32 seqnum,
+		u32 seqnum,
 		unsigned char *cksum, unsigned char *buf)
 {
 	unsigned char plain[8];
@@ -65,7 +65,7 @@ s32
 krb5_get_seq_num(struct crypto_blkcipher *key,
 	       unsigned char *cksum,
 	       unsigned char *buf,
-	       int *direction, s32 * seqnum)
+	       int *direction, u32 *seqnum)
 {
 	s32 code;
 	unsigned char plain[8];

net/sunrpc/auth_gss/gss_krb5_unseal.c

@@ -82,7 +82,7 @@ gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
 	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
 	s32			now;
 	int			direction;
-	s32			seqnum;
+	u32			seqnum;
 	unsigned char		*ptr = (unsigned char *)read_token->data;
 	int			bodysize;