Skip to main content

Browse the archive

Revision 9f9f0f19994b42b3e5e8735d41b9c5136828a76c authored by Yunsheng Lin on 19 October 2021, 14:16:32 UTC, committed by David S. Miller on 20 October 2021, 10:38:11 UTC 
net: hns3: fix for miscalculation of rx unused desc
 
rx unused desc is the desc that need attatching new buffer
before refilling to hw to receive new packet, the number of
desc need attatching new buffer is calculated using next_to_use
and next_to_clean. when next_to_use == next_to_clean, currently
hns3 driver assumes that all the desc has the buffer attatched,
but 'next_to_use == next_to_clean' also means all the desc need
attatching new buffer if hw has comsumed all the desc and the
driver has not attatched any buffer to the desc yet.

This patch adds 'refill' in desc_cb to indicate whether a new
buffer has been refilled to a desc.

Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent adfb7b4
Raw File
sha1_generic.c 
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Cryptographic API.
 *
 * SHA1 Secure Hash Algorithm.
 *
 * Derived from cryptoapi implementation, adapted for in-place
 * scatterlist interface.
 *
 * Copyright (c) Alan Smithee.
 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
 * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
 */
#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <crypto/sha1.h>
#include <crypto/sha1_base.h>
#include <asm/byteorder.h>

const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE] = {
	0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d,
	0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90,
	0xaf, 0xd8, 0x07, 0x09
};
EXPORT_SYMBOL_GPL(sha1_zero_message_hash);

static void sha1_generic_block_fn(struct sha1_state *sst, u8 const *src,
				  int blocks)
{
	u32 temp[SHA1_WORKSPACE_WORDS];

	while (blocks--) {
		sha1_transform(sst->state, src, temp);
		src += SHA1_BLOCK_SIZE;
	}
	memzero_explicit(temp, sizeof(temp));
}

int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
		       unsigned int len)
{
	return sha1_base_do_update(desc, data, len, sha1_generic_block_fn);
}
EXPORT_SYMBOL(crypto_sha1_update);

static int sha1_final(struct shash_desc *desc, u8 *out)
{
	sha1_base_do_finalize(desc, sha1_generic_block_fn);
	return sha1_base_finish(desc, out);
}

int crypto_sha1_finup(struct shash_desc *desc, const u8 *data,
		      unsigned int len, u8 *out)
{
	sha1_base_do_update(desc, data, len, sha1_generic_block_fn);
	return sha1_final(desc, out);
}
EXPORT_SYMBOL(crypto_sha1_finup);

static struct shash_alg alg = {
	.digestsize	=	SHA1_DIGEST_SIZE,
	.init		=	sha1_base_init,
	.update		=	crypto_sha1_update,
	.final		=	sha1_final,
	.finup		=	crypto_sha1_finup,
	.descsize	=	sizeof(struct sha1_state),
	.base		=	{
		.cra_name	=	"sha1",
		.cra_driver_name=	"sha1-generic",
		.cra_priority	=	100,
		.cra_blocksize	=	SHA1_BLOCK_SIZE,
		.cra_module	=	THIS_MODULE,
	}
};

static int __init sha1_generic_mod_init(void)
{
	return crypto_register_shash(&alg);
}

static void __exit sha1_generic_mod_fini(void)
{
	crypto_unregister_shash(&alg);
}

subsys_initcall(sha1_generic_mod_init);
module_exit(sha1_generic_mod_fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");

MODULE_ALIAS_CRYPTO("sha1");
MODULE_ALIAS_CRYPTO("sha1-generic");
back to top