/* * netsniff-ng - the packet sniffing beast * Copyright 2011 - 2013 Daniel Borkmann. * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "built_in.h" #include "xmalloc.h" #include "curve.h" #include "ioops.h" #include "rnd.h" #include "die.h" #include "str.h" #include "curvetun.h" #include "locking.h" #include "crypto.h" #include "config.h" static void curve25519_init(struct curve25519_struct *curve) { curve->enc_size = curve->dec_size = TUNBUFF_SIZ; curve->enc = xmalloc_aligned(curve->enc_size, 16); curve->dec = xmalloc_aligned(curve->dec_size, 16); spinlock_init(&curve->enc_lock); spinlock_init(&curve->dec_lock); } static void curve25519_destroy(struct curve25519_struct *curve) { spinlock_destroy(&curve->enc_lock); spinlock_destroy(&curve->dec_lock); xzfree(curve->enc, curve->enc_size); xzfree(curve->dec, curve->dec_size); } struct curve25519_struct *curve25519_tfm_alloc(void) { struct curve25519_struct *tfm; tfm = xzmalloc_aligned(sizeof(*tfm), 16); curve25519_init(tfm); return tfm; } void curve25519_tfm_free(struct curve25519_struct *tfm) { curve25519_destroy(tfm); xzfree(tfm, sizeof(*tfm)); } void curve25519_tfm_free_void(void *tfm) { curve25519_tfm_free(tfm); } void curve25519_proto_init(struct curve25519_proto *proto, unsigned char *pubkey_remote, size_t len) { int result; char file[128]; struct passwd *pw = getpwuid(getuid()); unsigned char secretkey_own[crypto_box_sec_key_size]; unsigned char publickey_own[crypto_box_pub_key_size]; fmemset(secretkey_own, 0, sizeof(secretkey_own)); fmemset(publickey_own, 0, sizeof(publickey_own)); if (unlikely(!pubkey_remote || len != sizeof(publickey_own))) panic("Invalid argument on curve25519_proto_init!\n"); slprintf(file, sizeof(file), "%s/%s", pw->pw_dir, FILE_PRIVKEY); read_blob_or_die(file, secretkey_own, sizeof(secretkey_own)); crypto_scalarmult_curve25519_base(publickey_own, secretkey_own); result = crypto_verify_32(publickey_own, pubkey_remote); if (result == 0) panic("Remote end has same public key as you have!\n"); crypto_box_beforenm(proto->key, pubkey_remote, secretkey_own); fmemset(proto->enonce, 0, sizeof(proto->enonce)); fmemset(proto->dnonce, 0, sizeof(proto->dnonce)); xmemset(secretkey_own, 0, sizeof(secretkey_own)); xmemset(publickey_own, 0, sizeof(publickey_own)); } ssize_t curve25519_encode(struct curve25519_struct *curve, struct curve25519_proto *proto, unsigned char *plaintext, size_t size, unsigned char **ciphertext) { int ret, i; ssize_t done = size; struct taia packet_taia; spinlock_lock(&curve->enc_lock); if (unlikely(size > curve->enc_size)) { done = -ENOMEM; goto out; } taia_now(&packet_taia); taia_pack(NONCE_EDN_OFFSET(proto->enonce), &packet_taia); fmemset(curve->enc, 0, curve->enc_size); ret = crypto_box_afternm(curve->enc, plaintext, size, proto->enonce, proto->key); if (unlikely(ret)) { done = -EIO; goto out; } fmemcpy(NONCE_PKT_OFFSET(curve->enc), NONCE_EDN_OFFSET(proto->enonce), NONCE_LENGTH); for (i = 0; i < NONCE_RND_LENGTH; ++i) curve->enc[i] = (uint8_t) secrand(); (*ciphertext) = curve->enc; out: spinlock_unlock(&curve->enc_lock); return done; } ssize_t curve25519_decode(struct curve25519_struct *curve, struct curve25519_proto *proto, unsigned char *ciphertext, size_t size, unsigned char **plaintext, struct taia *arrival_taia) { int ret; ssize_t done = size; struct taia packet_taia, tmp_taia; spinlock_lock(&curve->dec_lock); if (unlikely(size > curve->dec_size || size < NONCE_ALL_LENGTH)) { done = size < NONCE_ALL_LENGTH ? 0 : -ENOMEM; goto out; } if (arrival_taia == NULL) { taia_now(&tmp_taia); arrival_taia = &tmp_taia; } taia_unpack(NONCE_PKT_OFFSET(ciphertext), &packet_taia); if (taia_looks_good(arrival_taia, &packet_taia) == 0) { done = 0; goto out; } fmemcpy(NONCE_EDN_OFFSET(proto->dnonce), NONCE_PKT_OFFSET(ciphertext), NONCE_LENGTH); fmemset(curve->dec, 0, curve->dec_size); ret = crypto_box_open_afternm(curve->dec, ciphertext, size, proto->dnonce, proto->key); if (unlikely(ret)) { done = -EIO; goto out; } (*plaintext) = curve->dec; out: spinlock_unlock(&curve->dec_lock); return done; } int curve25519_pubkey_hexparse_32(unsigned char *bin, size_t blen, const char *ascii, size_t alen) { int ret = sscanf(ascii, "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:" "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:" "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:" "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx", &bin[0], &bin[1], &bin[2], &bin[3], &bin[4], &bin[5], &bin[6], &bin[7], &bin[8], &bin[9], &bin[10], &bin[11], &bin[12], &bin[13], &bin[14], &bin[15], &bin[16], &bin[17], &bin[18], &bin[19], &bin[20], &bin[21], &bin[22], &bin[23], &bin[24], &bin[25], &bin[26], &bin[27], &bin[28], &bin[29], &bin[30], &bin[31]); return ret == 32; } class='oid'>01a8d928c06fe7bef488f55bade6ba37b958bb5f /sound/drivers/ml403-ac97cr.c parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: axp20x: Fix axp809 ldo_io registration error on cold boot
The maximum supported voltage for ldo_io# is 3.3V, but on cold boot the selector comes up at 0x1f, which maps to 3.8V. This was previously corrected by Allwinner's U-boot, which set all regulators on the PMICs to some pre-configured voltage. With recent progress in U-boot SPL support, this is no longer the case. In any case we should handle this quirk in the kernel driver as well. This invalid setting causes _regulator_get_voltage() to fail with -EINVAL which causes regulator registration to fail when constrains are used: [ 1.054181] vcc-pg: failed to get the current voltage(-22) [ 1.059670] axp20x-regulator axp20x-regulator.0: Failed to register ldo_io0 [ 1.069749] axp20x-regulator: probe of axp20x-regulator.0 failed with error -22 This commits makes the axp20x regulator driver accept the 0x1f register value, fixing this. The datasheet does not guarantee reliable operation above 3.3V, so on boards where this regulator is used the regulator-max-microvolt setting must be 3.3V or less. This is essentially the same as the commit f40d4896bf32 ("regulator: axp20x: Fix axp22x ldo_io registration error on cold boot") for AXP22x PMICs. Fixes: a51f9f4622a3 ("regulator: axp20x: support AXP809 variant") Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/drivers/ml403-ac97cr.c')