rpcgss: simplify make_checksum

We're doing some pointless translation between krb5 constants and kernel
crypto string names.

Also clean up some related spkm3 code as necessary.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/include/linux/sunrpc/gss_krb5.h b/include/linux/sunrpc/gss_krb5.h
index f680ed3..abfa1f3 100644 (file)
--- a/include/linux/sunrpc/gss_krb5.h
+++ b/include/linux/sunrpc/gss_krb5.h
@@ -116,7 +116,7 @@ enum seal_alg {
 #define ENCTYPE_UNKNOWN         0x01ff
 
 s32
-make_checksum(s32 cksumtype, char *header, int hdrlen, struct xdr_buf *body,
+make_checksum(char *, char *header, int hdrlen, struct xdr_buf *body,
                   int body_offset, struct xdr_netobj *cksum);
 
 u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,

diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c
index 10d05ea..d926cda 100644 (file)
--- a/net/sunrpc/auth_gss/gss_krb5_crypto.c
+++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c
@@ -130,23 +130,13 @@ checksummer(struct scatterlist *sg, void *data)
 
 /* checksum the plaintext data and hdrlen bytes of the token header */
 s32
-make_checksum(s32 cksumtype, char *header, int hdrlen, struct xdr_buf *body,
+make_checksum(char *cksumname, char *header, int hdrlen, struct xdr_buf *body,
                   int body_offset, struct xdr_netobj *cksum)
 {
-       char                            *cksumname;
        struct hash_desc                desc; /* XXX add to ctx? */
        struct scatterlist              sg[1];
        int err;
 
-       switch (cksumtype) {
-               case CKSUMTYPE_RSA_MD5:
-                       cksumname = "md5";
-                       break;
-               default:
-                       dprintk("RPC:      krb5_make_checksum:"
-                               " unsupported checksum %d", cksumtype);
-                       return GSS_S_FAILURE;
-       }
        desc.tfm = crypto_alloc_hash(cksumname, 0, CRYPTO_ALG_ASYNC);
        if (IS_ERR(desc.tfm))
                return GSS_S_FAILURE;

diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c
index 2bc2277..c187f7f 100644 (file)
--- a/net/sunrpc/auth_gss/gss_krb5_seal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_seal.c
@@ -108,7 +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(CKSUMTYPE_RSA_MD5, krb5_hdr, 8, text, 0, &md5cksum))
+       if (make_checksum("md5", krb5_hdr, 8, text, 0, &md5cksum))
                goto out_err;
 
        if (krb5_encrypt(ctx->seq, NULL, md5cksum.data,

diff --git a/net/sunrpc/auth_gss/gss_krb5_unseal.c b/net/sunrpc/auth_gss/gss_krb5_unseal.c
index 60469d9..62807ac 100644 (file)
--- a/net/sunrpc/auth_gss/gss_krb5_unseal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_unseal.c
@@ -114,8 +114,7 @@ gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
        if (signalg != SGN_ALG_DES_MAC_MD5)
                goto out;
 
-       ret = make_checksum(CKSUMTYPE_RSA_MD5, ptr - 2, 8,
-                                message_buffer, 0, &md5cksum);
+       ret = make_checksum("md5", ptr - 2, 8, message_buffer, 0, &md5cksum);
        if (ret)
                goto out;
 

diff --git a/net/sunrpc/auth_gss/gss_krb5_wrap.c b/net/sunrpc/auth_gss/gss_krb5_wrap.c
index 2069371..6d508d7 100644 (file)
--- a/net/sunrpc/auth_gss/gss_krb5_wrap.c
+++ b/net/sunrpc/auth_gss/gss_krb5_wrap.c
@@ -176,7 +176,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
        /* XXXJBF: UGH!: */
        tmp_pages = buf->pages;
        buf->pages = pages;
-       if (make_checksum(CKSUMTYPE_RSA_MD5, krb5_hdr, 8, buf,
+       if (make_checksum("md5", krb5_hdr, 8, buf,
                                offset + headlen - blocksize, &md5cksum))
                goto out_err;
        buf->pages = tmp_pages;
@@ -272,7 +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;
 
-       ret = make_checksum(CKSUMTYPE_RSA_MD5, ptr - 2, 8, buf,
+       ret = make_checksum("md5", ptr - 2, 8, buf,
                 ptr + 22 - (unsigned char *)buf->head[0].iov_base, &md5cksum);
        if (ret)
                goto out;