/* * sha1_base.h - core logic for SHA-1 implementations * * Copyright (C) 2015 Linaro Ltd * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include typedef void (sha1_block_fn)(struct sha1_state *sst, u8 const *src, int blocks); static inline int sha1_base_init(struct shash_desc *desc) { struct sha1_state *sctx = shash_desc_ctx(desc); sctx->state[0] = SHA1_H0; sctx->state[1] = SHA1_H1; sctx->state[2] = SHA1_H2; sctx->state[3] = SHA1_H3; sctx->state[4] = SHA1_H4; sctx->count = 0; return 0; } static inline int sha1_base_do_update(struct shash_desc *desc, const u8 *data, unsigned int len, sha1_block_fn *block_fn) { struct sha1_state *sctx = shash_desc_ctx(desc); unsigned int partial = sctx->count % SHA1_BLOCK_SIZE; sctx->count += len; if (unlikely((partial + len) >= SHA1_BLOCK_SIZE)) { int blocks; if (partial) { int p = SHA1_BLOCK_SIZE - partial; memcpy(sctx->buffer + partial, data, p); data += p; len -= p; block_fn(sctx, sctx->buffer, 1); } blocks = len / SHA1_BLOCK_SIZE; len %= SHA1_BLOCK_SIZE; if (blocks) { block_fn(sctx, data, blocks); data += blocks * SHA1_BLOCK_SIZE; } partial = 0; } if (len) memcpy(sctx->buffer + partial, data, len); return 0; } static inline int sha1_base_do_finalize(struct shash_desc *desc, sha1_block_fn *block_fn) { const int bit_offset = SHA1_BLOCK_SIZE - sizeof(__be64); struct sha1_state *sctx = shash_desc_ctx(desc); __be64 *bits = (__be64 *)(sctx->buffer + bit_offset); unsigned int partial = sctx->count % SHA1_BLOCK_SIZE; sctx->buffer[partial++] = 0x80; if (partial > bit_offset) { memset(sctx->buffer + partial, 0x0, SHA1_BLOCK_SIZE - partial); partial = 0; block_fn(sctx, sctx->buffer, 1); } memset(sctx->buffer + partial, 0x0, bit_offset - partial); *bits = cpu_to_be64(sctx->count << 3); block_fn(sctx, sctx->buffer, 1); return 0; } static inline int sha1_base_finish(struct shash_desc *desc, u8 *out) { struct sha1_state *sctx = shash_desc_ctx(desc); __be32 *digest = (__be32 *)out; int i; for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(__be32); i++) put_unaligned_be32(sctx->state[i], digest++); *sctx = (struct sha1_state){}; return 0; } 420bb4076ace670addc55300e3b8c4a02dfc6'/>
path: root/drivers/usb/atm/cxacru.c
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authorChristoph Hellwig <hch@lst.de>2017-01-19 16:55:57 +0100
committerSagi Grimberg <sagi@grimberg.me>2017-01-26 17:49:14 +0200
commit19e420bb4076ace670addc55300e3b8c4a02dfc6 (patch)
treeba40aad7ab4fb28c0eafd0ee84959589f444f58d /drivers/usb/atm/cxacru.c
parent748ff8408f8e208f279ba221e5c12612fbb4dddb (diff)
nvme-fc: use blk_rq_nr_phys_segments
Without this deallocate won't work properly due to the mismatch of the bio/request size and the actual payload size. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers/usb/atm/cxacru.c')