diff options
Diffstat (limited to 'src/libstrongswan/plugins')
| -rw-r--r-- | src/libstrongswan/plugins/padlock/padlock_plugin.c | 97 | ||||
| -rw-r--r-- | src/libstrongswan/plugins/rdrand/rdrand_plugin.c | 55 |
2 files changed, 21 insertions, 131 deletions
diff --git a/src/libstrongswan/plugins/padlock/padlock_plugin.c b/src/libstrongswan/plugins/padlock/padlock_plugin.c index 2005ef648..9ce210961 100644 --- a/src/libstrongswan/plugins/padlock/padlock_plugin.c +++ b/src/libstrongswan/plugins/padlock/padlock_plugin.c @@ -23,32 +23,13 @@ #include <library.h> #include <plugins/plugin_feature.h> +#include <utils/cpu_feature.h> #include <utils/debug.h> typedef struct private_padlock_plugin_t private_padlock_plugin_t; typedef enum padlock_feature_t padlock_feature_t; /** - * Feature flags of padlock, received via cpuid() - */ -enum padlock_feature_t { - PADLOCK_RESERVED_1 = (1<<0), - PADLOCK_RESERVED_2 = (1<<1), - PADLOCK_RNG_AVAILABLE = (1<<2), - PADLOCK_RNG_ENABLED = (1<<3), - PADLOCK_RESERVED_3 = (1<<4), - PADLOCK_RESERVED_4 = (1<<5), - PADLOCK_ACE_AVAILABLE = (1<<6), - PADLOCK_ACE_ENABLED = (1<<7), - PADLOCK_ACE2_AVAILABLE = (1<<8), - PADLOCK_ACE2_ENABLED = (1<<9), - PADLOCK_PHE_AVAILABLE = (1<<10), - PADLOCK_PHE_ENABLED = (1<<11), - PADLOCK_PMM_AVAILABLE = (1<<12), - PADLOCK_PMM_ENABLED = (1<<13), -}; - -/** * private data of aes_plugin */ struct private_padlock_plugin_t { @@ -61,48 +42,9 @@ struct private_padlock_plugin_t { /** * features supported by Padlock */ - padlock_feature_t features; + cpu_feature_t features; }; -/** - * Get cpuid for info, return eax, ebx, ecx and edx. -fPIC requires to save ebx. - */ -#define cpuid(op, a, b, c, d)\ - asm (\ - "pushl %%ebx \n\t"\ - "cpuid \n\t"\ - "movl %%ebx, %1 \n\t"\ - "popl %%ebx \n\t"\ - : "=a" (a), "=r" (b), "=c" (c), "=d" (d) \ - : "a" (op)); - -/** - * Get features supported by Padlock - */ -static padlock_feature_t get_padlock_features() -{ - char vendor[3 * sizeof(int) + 1]; - int a, b, c, d; - - cpuid(0, a, b, c, d); - /* VendorID string is in b-d-c (yes, in this order) */ - snprintf(vendor, sizeof(vendor), "%.4s%.4s%.4s", &b, &d, &c); - - /* check if we have a VIA chip */ - if (streq(vendor, "CentaurHauls")) - { - cpuid(0xC0000000, a, b, c, d); - /* check Centaur Extended Feature Flags */ - if (a >= 0xC0000001) - { - cpuid(0xC0000001, a, b, c, d); - return d; - } - } - DBG1(DBG_LIB, "Padlock not found, CPU is %s", vendor); - return 0; -} - METHOD(plugin_t, get_name, char*, private_padlock_plugin_t *this) { @@ -132,15 +74,15 @@ METHOD(plugin_t, get_features, int, if (!count) { /* initialize only once */ - if (this->features & PADLOCK_RNG_ENABLED) + if (this->features & CPU_FEATURE_PADLOCK_RNG_ENABLED) { plugin_features_add(f, f_rng, countof(f_rng), &count); } - if (this->features & PADLOCK_ACE2_ENABLED) + if (this->features & CPU_FEATURE_PADLOCK_ACE2_ENABLED) { plugin_features_add(f, f_aes, countof(f_aes), &count); } - if (this->features & PADLOCK_PHE_ENABLED) + if (this->features & CPU_FEATURE_PADLOCK_PHE_ENABLED) { plugin_features_add(f, f_sha1, countof(f_sha1), &count); } @@ -170,25 +112,20 @@ plugin_t *padlock_plugin_create() .destroy = _destroy, }, }, - .features = get_padlock_features(), + .features = cpu_feature_get_all(), ); - if (!this->features) - { - free(this); - return NULL; - } - DBG1(DBG_LIB, "Padlock found, supports:%s%s%s%s%s, enabled:%s%s%s%s%s", - this->features & PADLOCK_RNG_AVAILABLE ? " RNG" : "", - this->features & PADLOCK_ACE_AVAILABLE ? " ACE" : "", - this->features & PADLOCK_ACE2_AVAILABLE ? " ACE2" : "", - this->features & PADLOCK_PHE_AVAILABLE ? " PHE" : "", - this->features & PADLOCK_PMM_AVAILABLE ? " PMM" : "", - this->features & PADLOCK_RNG_ENABLED ? " RNG" : "", - this->features & PADLOCK_ACE_ENABLED ? " ACE" : "", - this->features & PADLOCK_ACE2_ENABLED ? " ACE2" : "", - this->features & PADLOCK_PHE_ENABLED ? " PHE" : "", - this->features & PADLOCK_PMM_ENABLED ? " PMM" : ""); + DBG1(DBG_LIB, "Padlock features supported:%s%s%s%s%s, enabled:%s%s%s%s%s", + this->features & CPU_FEATURE_PADLOCK_RNG_AVAILABLE ? " RNG" : "", + this->features & CPU_FEATURE_PADLOCK_ACE_AVAILABLE ? " ACE" : "", + this->features & CPU_FEATURE_PADLOCK_ACE2_AVAILABLE ? " ACE2" : "", + this->features & CPU_FEATURE_PADLOCK_PHE_AVAILABLE ? " PHE" : "", + this->features & CPU_FEATURE_PADLOCK_PMM_AVAILABLE ? " PMM" : "", + this->features & CPU_FEATURE_PADLOCK_RNG_ENABLED ? " RNG" : "", + this->features & CPU_FEATURE_PADLOCK_ACE_ENABLED ? " ACE" : "", + this->features & CPU_FEATURE_PADLOCK_ACE2_ENABLED ? " ACE2" : "", + this->features & CPU_FEATURE_PADLOCK_PHE_ENABLED ? " PHE" : "", + this->features & CPU_FEATURE_PADLOCK_PMM_ENABLED ? " PMM" : ""); return &this->public.plugin; } diff --git a/src/libstrongswan/plugins/rdrand/rdrand_plugin.c b/src/libstrongswan/plugins/rdrand/rdrand_plugin.c index b416c872f..b63bc2f43 100644 --- a/src/libstrongswan/plugins/rdrand/rdrand_plugin.c +++ b/src/libstrongswan/plugins/rdrand/rdrand_plugin.c @@ -20,6 +20,7 @@ #include <library.h> #include <utils/debug.h> +#include <utils/cpu_feature.h> typedef struct private_rdrand_plugin_t private_rdrand_plugin_t; typedef enum cpuid_feature_t cpuid_feature_t; @@ -35,56 +36,6 @@ struct private_rdrand_plugin_t { rdrand_plugin_t public; }; -/** - * CPU feature flags, returned via cpuid(1) - */ -enum cpuid_feature_t { - CPUID_RDRAND = (1<<30), -}; - -/** - * Get cpuid for info, return eax, ebx, ecx and edx. - * -fPIC requires to save ebx on IA-32. - */ -static void cpuid(u_int op, u_int *a, u_int *b, u_int *c, u_int *d) -{ -#ifdef __x86_64__ - asm("cpuid" : "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d) : "a" (op)); -#else /* __i386__ */ - asm("pushl %%ebx;" - "cpuid;" - "movl %%ebx, %1;" - "popl %%ebx;" - : "=a" (*a), "=r" (*b), "=c" (*c), "=d" (*d) : "a" (op)); -#endif /* __x86_64__ / __i386__*/ -} - -/** - * Check if we have RDRAND instruction - */ -static bool have_rdrand() -{ - char vendor[3 * sizeof(u_int32_t) + 1]; - u_int a, b, c, d; - - cpuid(0, &a, &b, &c, &d); - /* VendorID string is in b-d-c (yes, in this order) */ - snprintf(vendor, sizeof(vendor), "%.4s%.4s%.4s", &b, &d, &c); - - /* check if we have an Intel CPU */ - if (streq(vendor, "GenuineIntel")) - { - cpuid(1, &a, &b, &c, &d); - if (c & CPUID_RDRAND) - { - DBG2(DBG_LIB, "detected RDRAND support on %s CPU", vendor); - return TRUE; - } - } - DBG2(DBG_LIB, "no RDRAND support on %s CPU, disabled", vendor); - return FALSE; -} - METHOD(plugin_t, get_name, char*, private_rdrand_plugin_t *this) { @@ -102,10 +53,12 @@ METHOD(plugin_t, get_features, int, PLUGIN_DEPENDS(CRYPTER, ENCR_AES_CBC, 16), }; *features = f; - if (have_rdrand()) + if (cpu_feature_available(CPU_FEATURE_RDRAND)) { + DBG2(DBG_LIB, "detected RDRAND support, enabled"); return countof(f); } + DBG2(DBG_LIB, "no RDRAND support detected, disabled"); return 0; } |