Revision 2d63ba3e41db3ceb0d23924ed2879b910276e24c authored by Linus Torvalds on 16 August 2019, 16:13:16 UTC, committed by Linus Torvalds on 16 August 2019, 16:13:16 UTC
Pull power management fixes from Rafael Wysocki:
"These add a check to avoid recent suspend-to-idle power regression on
systems with NVMe drives where the PCIe ASPM policy is "performance"
(or when the kernel is built without ASPM support), fix an issue
related to frequency limits in the schedutil cpufreq governor and fix
a mistake related to the PM QoS usage in the cpufreq core introduced
recently.
Specifics:
- Disable NVMe power optimization related to suspend-to-idle added
recently on systems where PCIe ASPM is not able to put PCIe links
into low-power states to prevent excess power from being drawn by
the system while suspended (Rafael Wysocki).
- Make the schedutil governor handle frequency limits changes
properly in all cases (Viresh Kumar).
- Prevent the cpufreq core from treating positive values returned by
dev_pm_qos_update_request() as errors (Viresh Kumar)"
* tag 'pm-5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
nvme-pci: Allow PCI bus-level PM to be used if ASPM is disabled
PCI/ASPM: Add pcie_aspm_enabled()
cpufreq: schedutil: Don't skip freq update when limits change
cpufreq: dev_pm_qos_update_request() can return 1 on success
crypto_user_stat.c
// SPDX-License-Identifier: GPL-2.0
/*
* Crypto user configuration API.
*
* Copyright (C) 2017-2018 Corentin Labbe <clabbe@baylibre.com>
*
*/
#include <linux/crypto.h>
#include <linux/cryptouser.h>
#include <linux/sched.h>
#include <net/netlink.h>
#include <crypto/internal/skcipher.h>
#include <crypto/internal/rng.h>
#include <crypto/akcipher.h>
#include <crypto/kpp.h>
#include <crypto/internal/cryptouser.h>
#include "internal.h"
#define null_terminated(x) (strnlen(x, sizeof(x)) < sizeof(x))
struct crypto_dump_info {
struct sk_buff *in_skb;
struct sk_buff *out_skb;
u32 nlmsg_seq;
u16 nlmsg_flags;
};
static int crypto_report_aead(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_aead raead;
memset(&raead, 0, sizeof(raead));
strscpy(raead.type, "aead", sizeof(raead.type));
raead.stat_encrypt_cnt = atomic64_read(&alg->stats.aead.encrypt_cnt);
raead.stat_encrypt_tlen = atomic64_read(&alg->stats.aead.encrypt_tlen);
raead.stat_decrypt_cnt = atomic64_read(&alg->stats.aead.decrypt_cnt);
raead.stat_decrypt_tlen = atomic64_read(&alg->stats.aead.decrypt_tlen);
raead.stat_err_cnt = atomic64_read(&alg->stats.aead.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_AEAD, sizeof(raead), &raead);
}
static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_cipher rcipher;
memset(&rcipher, 0, sizeof(rcipher));
strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
rcipher.stat_encrypt_cnt = atomic64_read(&alg->stats.cipher.encrypt_cnt);
rcipher.stat_encrypt_tlen = atomic64_read(&alg->stats.cipher.encrypt_tlen);
rcipher.stat_decrypt_cnt = atomic64_read(&alg->stats.cipher.decrypt_cnt);
rcipher.stat_decrypt_tlen = atomic64_read(&alg->stats.cipher.decrypt_tlen);
rcipher.stat_err_cnt = atomic64_read(&alg->stats.cipher.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
}
static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_compress rcomp;
memset(&rcomp, 0, sizeof(rcomp));
strscpy(rcomp.type, "compression", sizeof(rcomp.type));
rcomp.stat_compress_cnt = atomic64_read(&alg->stats.compress.compress_cnt);
rcomp.stat_compress_tlen = atomic64_read(&alg->stats.compress.compress_tlen);
rcomp.stat_decompress_cnt = atomic64_read(&alg->stats.compress.decompress_cnt);
rcomp.stat_decompress_tlen = atomic64_read(&alg->stats.compress.decompress_tlen);
rcomp.stat_err_cnt = atomic64_read(&alg->stats.compress.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_COMPRESS, sizeof(rcomp), &rcomp);
}
static int crypto_report_acomp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_compress racomp;
memset(&racomp, 0, sizeof(racomp));
strscpy(racomp.type, "acomp", sizeof(racomp.type));
racomp.stat_compress_cnt = atomic64_read(&alg->stats.compress.compress_cnt);
racomp.stat_compress_tlen = atomic64_read(&alg->stats.compress.compress_tlen);
racomp.stat_decompress_cnt = atomic64_read(&alg->stats.compress.decompress_cnt);
racomp.stat_decompress_tlen = atomic64_read(&alg->stats.compress.decompress_tlen);
racomp.stat_err_cnt = atomic64_read(&alg->stats.compress.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_ACOMP, sizeof(racomp), &racomp);
}
static int crypto_report_akcipher(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_akcipher rakcipher;
memset(&rakcipher, 0, sizeof(rakcipher));
strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
rakcipher.stat_encrypt_cnt = atomic64_read(&alg->stats.akcipher.encrypt_cnt);
rakcipher.stat_encrypt_tlen = atomic64_read(&alg->stats.akcipher.encrypt_tlen);
rakcipher.stat_decrypt_cnt = atomic64_read(&alg->stats.akcipher.decrypt_cnt);
rakcipher.stat_decrypt_tlen = atomic64_read(&alg->stats.akcipher.decrypt_tlen);
rakcipher.stat_sign_cnt = atomic64_read(&alg->stats.akcipher.sign_cnt);
rakcipher.stat_verify_cnt = atomic64_read(&alg->stats.akcipher.verify_cnt);
rakcipher.stat_err_cnt = atomic64_read(&alg->stats.akcipher.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
sizeof(rakcipher), &rakcipher);
}
static int crypto_report_kpp(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_kpp rkpp;
memset(&rkpp, 0, sizeof(rkpp));
strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
rkpp.stat_setsecret_cnt = atomic64_read(&alg->stats.kpp.setsecret_cnt);
rkpp.stat_generate_public_key_cnt = atomic64_read(&alg->stats.kpp.generate_public_key_cnt);
rkpp.stat_compute_shared_secret_cnt = atomic64_read(&alg->stats.kpp.compute_shared_secret_cnt);
rkpp.stat_err_cnt = atomic64_read(&alg->stats.kpp.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
}
static int crypto_report_ahash(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_hash rhash;
memset(&rhash, 0, sizeof(rhash));
strscpy(rhash.type, "ahash", sizeof(rhash.type));
rhash.stat_hash_cnt = atomic64_read(&alg->stats.hash.hash_cnt);
rhash.stat_hash_tlen = atomic64_read(&alg->stats.hash.hash_tlen);
rhash.stat_err_cnt = atomic64_read(&alg->stats.hash.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
}
static int crypto_report_shash(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_hash rhash;
memset(&rhash, 0, sizeof(rhash));
strscpy(rhash.type, "shash", sizeof(rhash.type));
rhash.stat_hash_cnt = atomic64_read(&alg->stats.hash.hash_cnt);
rhash.stat_hash_tlen = atomic64_read(&alg->stats.hash.hash_tlen);
rhash.stat_err_cnt = atomic64_read(&alg->stats.hash.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
}
static int crypto_report_rng(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_stat_rng rrng;
memset(&rrng, 0, sizeof(rrng));
strscpy(rrng.type, "rng", sizeof(rrng.type));
rrng.stat_generate_cnt = atomic64_read(&alg->stats.rng.generate_cnt);
rrng.stat_generate_tlen = atomic64_read(&alg->stats.rng.generate_tlen);
rrng.stat_seed_cnt = atomic64_read(&alg->stats.rng.seed_cnt);
rrng.stat_err_cnt = atomic64_read(&alg->stats.rng.err_cnt);
return nla_put(skb, CRYPTOCFGA_STAT_RNG, sizeof(rrng), &rrng);
}
static int crypto_reportstat_one(struct crypto_alg *alg,
struct crypto_user_alg *ualg,
struct sk_buff *skb)
{
memset(ualg, 0, sizeof(*ualg));
strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
strscpy(ualg->cru_driver_name, alg->cra_driver_name,
sizeof(ualg->cru_driver_name));
strscpy(ualg->cru_module_name, module_name(alg->cra_module),
sizeof(ualg->cru_module_name));
ualg->cru_type = 0;
ualg->cru_mask = 0;
ualg->cru_flags = alg->cra_flags;
ualg->cru_refcnt = refcount_read(&alg->cra_refcnt);
if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority))
goto nla_put_failure;
if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
struct crypto_stat_larval rl;
memset(&rl, 0, sizeof(rl));
strscpy(rl.type, "larval", sizeof(rl.type));
if (nla_put(skb, CRYPTOCFGA_STAT_LARVAL, sizeof(rl), &rl))
goto nla_put_failure;
goto out;
}
switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
case CRYPTO_ALG_TYPE_AEAD:
if (crypto_report_aead(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_SKCIPHER:
if (crypto_report_cipher(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_BLKCIPHER:
if (crypto_report_cipher(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_CIPHER:
if (crypto_report_cipher(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_COMPRESS:
if (crypto_report_comp(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_ACOMPRESS:
if (crypto_report_acomp(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_SCOMPRESS:
if (crypto_report_acomp(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_AKCIPHER:
if (crypto_report_akcipher(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_KPP:
if (crypto_report_kpp(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_AHASH:
if (crypto_report_ahash(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_HASH:
if (crypto_report_shash(skb, alg))
goto nla_put_failure;
break;
case CRYPTO_ALG_TYPE_RNG:
if (crypto_report_rng(skb, alg))
goto nla_put_failure;
break;
default:
pr_err("ERROR: Unhandled alg %d in %s\n",
alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL),
__func__);
}
out:
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static int crypto_reportstat_alg(struct crypto_alg *alg,
struct crypto_dump_info *info)
{
struct sk_buff *in_skb = info->in_skb;
struct sk_buff *skb = info->out_skb;
struct nlmsghdr *nlh;
struct crypto_user_alg *ualg;
int err = 0;
nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq,
CRYPTO_MSG_GETSTAT, sizeof(*ualg), info->nlmsg_flags);
if (!nlh) {
err = -EMSGSIZE;
goto out;
}
ualg = nlmsg_data(nlh);
err = crypto_reportstat_one(alg, ualg, skb);
if (err) {
nlmsg_cancel(skb, nlh);
goto out;
}
nlmsg_end(skb, nlh);
out:
return err;
}
int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
struct nlattr **attrs)
{
struct crypto_user_alg *p = nlmsg_data(in_nlh);
struct crypto_alg *alg;
struct sk_buff *skb;
struct crypto_dump_info info;
int err;
if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))
return -EINVAL;
alg = crypto_alg_match(p, 0);
if (!alg)
return -ENOENT;
err = -ENOMEM;
skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!skb)
goto drop_alg;
info.in_skb = in_skb;
info.out_skb = skb;
info.nlmsg_seq = in_nlh->nlmsg_seq;
info.nlmsg_flags = 0;
err = crypto_reportstat_alg(alg, &info);
drop_alg:
crypto_mod_put(alg);
if (err)
return err;
return nlmsg_unicast(crypto_nlsk, skb, NETLINK_CB(in_skb).portid);
}
MODULE_LICENSE("GPL");
Computing file changes ...
