-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Eric Mei <ericm@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_SEC
#include <libcfs/libcfs.h>
* could be called frequently for query (@nr_to_scan == 0).
* we try to keep at least PTLRPC_MAX_BRW_PAGES pages in the pool.
*/
-static int enc_pools_shrink(SHRINKER_FIRST_ARG int nr_to_scan,
- unsigned int gfp_mask)
+static int enc_pools_shrink(SHRINKER_ARGS(sc, nr_to_scan, gfp_mask))
{
- if (unlikely(nr_to_scan != 0)) {
+ if (unlikely(shrink_param(sc, nr_to_scan) != 0)) {
cfs_spin_lock(&page_pools.epp_lock);
- nr_to_scan = min(nr_to_scan, (int) page_pools.epp_free_pages -
- PTLRPC_MAX_BRW_PAGES);
- if (nr_to_scan > 0) {
- enc_pools_release_free_pages(nr_to_scan);
- CDEBUG(D_SEC, "released %d pages, %ld left\n",
- nr_to_scan, page_pools.epp_free_pages);
+ shrink_param(sc, nr_to_scan) = min_t(unsigned long,
+ shrink_param(sc, nr_to_scan),
+ page_pools.epp_free_pages -
+ PTLRPC_MAX_BRW_PAGES);
+ if (shrink_param(sc, nr_to_scan) > 0) {
+ enc_pools_release_free_pages(shrink_param(sc,
+ nr_to_scan));
+ CDEBUG(D_SEC, "released %ld pages, %ld left\n",
+ (long)shrink_param(sc, nr_to_scan),
+ page_pools.epp_free_pages);
page_pools.epp_st_shrinks++;
page_pools.epp_last_shrink = cfs_time_current_sec();
static int enc_pools_add_pages(int npages)
{
- static CFS_DECLARE_MUTEX(sem_add_pages);
+ static CFS_DEFINE_MUTEX(add_pages_mutex);
cfs_page_t ***pools;
int npools, alloced = 0;
int i, j, rc = -ENOMEM;
if (npages < PTLRPC_MAX_BRW_PAGES)
npages = PTLRPC_MAX_BRW_PAGES;
- cfs_down(&sem_add_pages);
+ cfs_mutex_lock(&add_pages_mutex);
if (npages + page_pools.epp_total_pages > page_pools.epp_max_pages)
npages = page_pools.epp_max_pages - page_pools.epp_total_pages;
goto out_pools;
for (j = 0; j < PAGES_PER_POOL && alloced < npages; j++) {
- pools[i][j] = cfs_alloc_page(CFS_ALLOC_IO |
- CFS_ALLOC_HIGH);
+ pools[i][j] = cfs_alloc_page(CFS_ALLOC_IO |
+ CFS_ALLOC_HIGHMEM);
if (pools[i][j] == NULL)
goto out_pools;
CERROR("Failed to allocate %d enc pages\n", npages);
}
- cfs_up(&sem_add_pages);
+ cfs_mutex_unlock(&add_pages_mutex);
return rc;
}
enc_pools_free();
if (page_pools.epp_st_access > 0) {
- CWARN("max pages %lu, grows %u, grow fails %u, shrinks %u, "
- "access %lu, missing %lu, max qlen %u, max wait "
- CFS_TIME_T"/%d\n",
- page_pools.epp_st_max_pages, page_pools.epp_st_grows,
- page_pools.epp_st_grow_fails,
- page_pools.epp_st_shrinks, page_pools.epp_st_access,
- page_pools.epp_st_missings, page_pools.epp_st_max_wqlen,
- page_pools.epp_st_max_wait, CFS_HZ);
+ CDEBUG(D_SEC,
+ "max pages %lu, grows %u, grow fails %u, shrinks %u, "
+ "access %lu, missing %lu, max qlen %u, max wait "
+ CFS_TIME_T"/%d\n",
+ page_pools.epp_st_max_pages, page_pools.epp_st_grows,
+ page_pools.epp_st_grow_fails,
+ page_pools.epp_st_shrinks, page_pools.epp_st_access,
+ page_pools.epp_st_missings, page_pools.epp_st_max_wqlen,
+ page_pools.epp_st_max_wait, CFS_HZ);
}
}
}
#endif
-/****************************************
- * Helpers to assist policy modules to *
- * implement checksum funcationality *
- ****************************************/
-
-static struct sptlrpc_hash_type hash_types[] = {
- [BULK_HASH_ALG_NULL] = { "null", "null", 0 },
- [BULK_HASH_ALG_ADLER32] = { "adler32", "adler32", 4 },
- [BULK_HASH_ALG_CRC32] = { "crc32", "crc32", 4 },
- [BULK_HASH_ALG_MD5] = { "md5", "md5", 16 },
- [BULK_HASH_ALG_SHA1] = { "sha1", "sha1", 20 },
- [BULK_HASH_ALG_SHA256] = { "sha256", "sha256", 32 },
- [BULK_HASH_ALG_SHA384] = { "sha384", "sha384", 48 },
- [BULK_HASH_ALG_SHA512] = { "sha512", "sha512", 64 },
+static int cfs_hash_alg_id[] = {
+ [BULK_HASH_ALG_NULL] = CFS_HASH_ALG_NULL,
+ [BULK_HASH_ALG_ADLER32] = CFS_HASH_ALG_ADLER32,
+ [BULK_HASH_ALG_CRC32] = CFS_HASH_ALG_CRC32,
+ [BULK_HASH_ALG_MD5] = CFS_HASH_ALG_MD5,
+ [BULK_HASH_ALG_SHA1] = CFS_HASH_ALG_SHA1,
+ [BULK_HASH_ALG_SHA256] = CFS_HASH_ALG_SHA256,
+ [BULK_HASH_ALG_SHA384] = CFS_HASH_ALG_SHA384,
+ [BULK_HASH_ALG_SHA512] = CFS_HASH_ALG_SHA512,
};
-
-const struct sptlrpc_hash_type *sptlrpc_get_hash_type(__u8 hash_alg)
-{
- struct sptlrpc_hash_type *ht;
-
- if (hash_alg < BULK_HASH_ALG_MAX) {
- ht = &hash_types[hash_alg];
- if (ht->sht_tfm_name)
- return ht;
- }
- return NULL;
-}
-EXPORT_SYMBOL(sptlrpc_get_hash_type);
-
const char * sptlrpc_get_hash_name(__u8 hash_alg)
{
- const struct sptlrpc_hash_type *ht;
-
- ht = sptlrpc_get_hash_type(hash_alg);
- if (ht)
- return ht->sht_name;
- else
- return "unknown";
+ return cfs_crypto_hash_name(cfs_hash_alg_id[hash_alg]);
}
EXPORT_SYMBOL(sptlrpc_get_hash_name);
__u8 sptlrpc_get_hash_alg(const char *algname)
{
- int i;
-
- for (i = 0; i < BULK_HASH_ALG_MAX; i++)
- if (!strcmp(hash_types[i].sht_name, algname))
- break;
- return i;
+ return cfs_crypto_hash_alg(algname);
}
EXPORT_SYMBOL(sptlrpc_get_hash_alg);
}
EXPORT_SYMBOL(bulk_sec_desc_unpack);
-#ifdef __KERNEL__
-
-#ifdef HAVE_ADLER
-static int do_bulk_checksum_adler32(struct ptlrpc_bulk_desc *desc, void *buf)
-{
- struct page *page;
- int off;
- char *ptr;
- __u32 adler32 = 1;
- int len, i;
-
- for (i = 0; i < desc->bd_iov_count; i++) {
- page = desc->bd_iov[i].kiov_page;
- off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
- ptr = cfs_kmap(page) + off;
- len = desc->bd_iov[i].kiov_len;
-
- adler32 = adler32(adler32, ptr, len);
-
- cfs_kunmap(page);
- }
-
- adler32 = cpu_to_le32(adler32);
- memcpy(buf, &adler32, sizeof(adler32));
- return 0;
-}
-#endif
-
-static int do_bulk_checksum_crc32(struct ptlrpc_bulk_desc *desc, void *buf)
+int sptlrpc_get_bulk_checksum(struct ptlrpc_bulk_desc *desc, __u8 alg,
+ void *buf, int buflen)
{
- struct page *page;
- int off;
- char *ptr;
- __u32 crc32 = ~0;
- int len, i;
+ struct cfs_crypto_hash_desc *hdesc;
+ int hashsize;
+ char hashbuf[64];
+ unsigned int bufsize;
+ int i, err;
- for (i = 0; i < desc->bd_iov_count; i++) {
- page = desc->bd_iov[i].kiov_page;
- off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
- ptr = cfs_kmap(page) + off;
- len = desc->bd_iov[i].kiov_len;
-
- crc32 = crc32_le(crc32, ptr, len);
+ LASSERT(alg > BULK_HASH_ALG_NULL && alg < BULK_HASH_ALG_MAX);
+ LASSERT(buflen >= 4);
- cfs_kunmap(page);
- }
+ hdesc = cfs_crypto_hash_init(cfs_hash_alg_id[alg], NULL, 0);
+ if (IS_ERR(hdesc)) {
+ CERROR("Unable to initialize checksum hash %s\n",
+ cfs_crypto_hash_name(cfs_hash_alg_id[alg]));
+ return PTR_ERR(hdesc);
+ }
- crc32 = cpu_to_le32(crc32);
- memcpy(buf, &crc32, sizeof(crc32));
- return 0;
-}
+ hashsize = cfs_crypto_hash_digestsize(cfs_hash_alg_id[alg]);
-int sptlrpc_get_bulk_checksum(struct ptlrpc_bulk_desc *desc, __u8 alg,
- void *buf, int buflen)
-{
- struct hash_desc hdesc;
- int hashsize;
- char hashbuf[64];
- struct scatterlist sl;
- int i;
-
- LASSERT(alg > BULK_HASH_ALG_NULL && alg < BULK_HASH_ALG_MAX);
- LASSERT(buflen >= 4);
-
- switch (alg) {
- case BULK_HASH_ALG_ADLER32:
-#ifdef HAVE_ADLER
- return do_bulk_checksum_adler32(desc, buf);
+ for (i = 0; i < desc->bd_iov_count; i++) {
+#ifdef __KERNEL__
+ cfs_crypto_hash_update_page(hdesc, desc->bd_iov[i].kiov_page,
+ desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK,
+ desc->bd_iov[i].kiov_len);
#else
- CERROR("Adler32 not supported\n");
- return -EINVAL;
+ cfs_crypto_hash_update(hdesc, desc->bd_iov[i].iov_base,
+ desc->bd_iov[i].iov_len);
#endif
- case BULK_HASH_ALG_CRC32:
- return do_bulk_checksum_crc32(desc, buf);
- }
-
- hdesc.tfm = ll_crypto_alloc_hash(hash_types[alg].sht_tfm_name, 0, 0);
- if (hdesc.tfm == NULL) {
- CERROR("Unable to allocate TFM %s\n", hash_types[alg].sht_name);
- return -ENOMEM;
- }
-
- hdesc.flags = 0;
- ll_crypto_hash_init(&hdesc);
-
- hashsize = ll_crypto_hash_digestsize(hdesc.tfm);
-
- for (i = 0; i < desc->bd_iov_count; i++) {
- sg_set_page(&sl, desc->bd_iov[i].kiov_page,
- desc->bd_iov[i].kiov_len,
- desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK);
- ll_crypto_hash_update(&hdesc, &sl, sl.length);
- }
-
- if (hashsize > buflen) {
- ll_crypto_hash_final(&hdesc, hashbuf);
- memcpy(buf, hashbuf, buflen);
- } else {
- ll_crypto_hash_final(&hdesc, buf);
- }
-
- ll_crypto_free_hash(hdesc.tfm);
- return 0;
+ }
+ if (hashsize > buflen) {
+ bufsize = sizeof(hashbuf);
+ err = cfs_crypto_hash_final(hdesc, (unsigned char *)hashbuf,
+ &bufsize);
+ memcpy(buf, hashbuf, buflen);
+ } else {
+ bufsize = buflen;
+ err = cfs_crypto_hash_final(hdesc, (unsigned char *)buf,
+ &bufsize);
+ }
+
+ if (err)
+ cfs_crypto_hash_final(hdesc, NULL, NULL);
+ return err;
}
EXPORT_SYMBOL(sptlrpc_get_bulk_checksum);
-#else /* !__KERNEL__ */
-
-int sptlrpc_get_bulk_checksum(struct ptlrpc_bulk_desc *desc, __u8 alg,
- void *buf, int buflen)
-{
- __u32 csum32;
- int i;
-
- LASSERT(alg == BULK_HASH_ALG_ADLER32 || alg == BULK_HASH_ALG_CRC32);
-
- if (alg == BULK_HASH_ALG_ADLER32)
- csum32 = 1;
- else
- csum32 = ~0;
-
- for (i = 0; i < desc->bd_iov_count; i++) {
- unsigned char *ptr = desc->bd_iov[i].iov_base;
- int len = desc->bd_iov[i].iov_len;
-
- switch (alg) {
- case BULK_HASH_ALG_ADLER32:
-#ifdef HAVE_ADLER
- csum32 = adler32(csum32, ptr, len);
-#else
- CERROR("Adler32 not supported\n");
- return -EINVAL;
-#endif
- break;
- case BULK_HASH_ALG_CRC32:
- csum32 = crc32_le(csum32, ptr, len);
- break;
- }
- }
-
- csum32 = cpu_to_le32(csum32);
- memcpy(buf, &csum32, sizeof(csum32));
- return 0;
-}
-#endif /* __KERNEL__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff