Commit Graph

22 Commits (cea0c0a77433fbb4aadeb97b6e95212490885b51)

Author SHA1 Message Date
Daniel Pouzzner fc73c6dbea linuxkm: fix Makefile to properly pivot module signature on CONFIG_MODULE_SIG==y; remove not-yet-kernel-compatible asm files from the ASFLAGS_FPU_DISABLE_SIMD_ENABLE list, matching the OBJECT_FILES_NON_STANDARD list, for clarity. 2021-10-26 20:24:28 -05:00
Daniel Pouzzner aca43cfe52 linuxkm/Kbuild: include -fno-omit-frame-pointer in HOST_EXTRACFLAGS, in case the target kernel has profiling enabled; remove the "always := $(hostprogs)" rule, as it doesn't work and causes warnings on kernel 5.10. 2021-10-26 20:24:28 -05:00
Daniel Pouzzner 6160da243d linuxkm: use EXPORT_SYMBOL_NS_GPL() for exports. 2021-10-26 20:24:28 -05:00
Daniel Pouzzner 3745b1c9db linuxkm: fix clean rules/definitions to not pick up top level Makefile, and to clean up empty object directories. 2021-10-26 20:24:27 -05:00
Daniel Pouzzner 83e0e19e03 linuxkm feature additions:
add build-time support for module signing using native Linux facility;

add support for alternative licenses using WOLFSSL_LICENSE macro;

improve load-time kernel log messages;

add support for sp-math-all asm/AVX2 acceleration;

add error-checking and return in SAVE_VECTOR_REGISTERS();

implement support for x86 accelerated crypto from interrupt handlers, gated on WOLFSSL_LINUXKM_SIMD_X86_IRQ_ALLOWED:

  * wolfcrypt_irq_fpu_states
  * am_in_hard_interrupt_handler()
  * allocate_wolfcrypt_irq_fpu_states()
  * free_wolfcrypt_irq_fpu_states()
  * save_vector_registers_x86()
  * restore_vector_registers_x86()

add WOLFSSL_LINUXKM_SIMD, WOLFSSL_LINUXKM_SIMD_X86, and WOLFSSL_LINUXKM_SIMD_ARM macros for more readable gating.
2021-09-20 10:27:13 -05:00
Daniel Pouzzner 3226e69649
--enable-linuxkm-pie (FIPS Linux kernel module) (#4276)
* Adds `--enable-linuxkm-pie` and associated infrastructure, to support FIPS mode in the Linux kernel module.
* Adds `tests/api.c` missing (void) arglist to `test_SSL_CIPHER_get_xxx()`.
2021-08-19 09:15:52 -07:00
Jacob Barthelmeh c729318ddd update copyright date 2021-03-11 13:42:46 +07:00
Daniel Pouzzner b468ea77ea linuxkm: use EXPORT_SYMBOL_NS(x, WOLFSSL) if available, else fall back to EXPORT_SYMBOL(x). 2020-10-21 14:37:43 -05:00
Daniel Pouzzner 8496a64ed4 linuxkm/Kbuild: the x86 _asm object files still reference "_GLOBAL_OFFSET_TABLE_", so they can't work in the kernel as-is. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner 7c2aefcfdd linuxkm: enable the rest of the _asm implementations for x86, wrapped in {SAVE,RESTORE}_VECTOR_REGISTERS(). 2020-09-23 18:32:16 -05:00
Daniel Pouzzner 5589565051 linuxkm: add autotools detection of usable compiler flags for enabling and disabling SIMD and fp registers and auto-vectorization, and integrate into linuxkm makefiles. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner 5504d9cd4e linuxkm: dial in SIMD options in Kbuild; add boilerplate at the top of all files added for linuxkm. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner 4f38fb2f78 linuxkm/Kbuild: gate EXPORT_SYMBOL(wolfcrypt_test) on -UNO_CRYPT_TEST. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner cd14cfb092 linuxkm: override-disable SIMD instructions for all .c.o's, with exceptions enumerated in Kbuild (currently only aes.c), and couple -msse with -fno-builtin-functions; export ENABLED_ASM for use as a pivot in Kbuild; use asm/i387.h, not asm/simd.h, for kernel_fpu_{begin,end}() protos. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner 9549a5f973 linuxkm: add linuxkm/module_exports.c.template, and autogenerate linuxkm/module_exports.c. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner 9aa3a4c559 linuxkm/Kbuild: make dependency on get_thread_size order-only, to suppress frivolous rebuilds on kernel 4.x. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner d8e71e8dd2 linuxkm/Kbuild: disable objtool on AESNI asm objects -- they work in the kernel as-is, despite "unannotated intra-function call" and "BP used as a scratch register" warnings. 2020-09-23 18:32:16 -05:00
Daniel Pouzzner d86b0601b9 lkm: tweak Kbuild to work on 4.x (hardcoded fallback stack size); add linuxkm/get_thread_size.c. 2020-09-23 18:32:15 -05:00
Daniel Pouzzner c194fb3beb lkm: add autodetection of kernel stack frame size; reactivate objtool scrutiny since _asm files are indeed not yet kernel-compatible; delete linuxkm/lkm_testcrypto.c and use wolfcrypt/test/test.c. 2020-09-23 18:32:15 -05:00
Daniel Pouzzner 34fd53b4fc linuxkm: WIP support for wolfcrypt_test() at module load time. 2020-09-23 18:32:15 -05:00
Daniel Pouzzner 2a3fd57b36 linuxkm/Kbuild, linuxkm/module_hooks.c: tweaks for buildability on kernel 4.9 (may also fix build on 3.x). 2020-09-23 18:32:15 -05:00
Daniel Pouzzner 1aa15632ce initial buildability of full libwolfssl.ko loadable kernel module for Linux via ./configure --enable-linuxkm && make. 2020-09-23 18:32:15 -05:00