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bpf-headers: switch to mips64 for 64 bit targets

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BTF pointer data has a different size on 32 vs 64 bit targets,
and while the generated eBPF code works, the BTF data fails to validate
on mismatch

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2021-11-18 22:25:47 +01:00
parent ff6b89df70
commit 8f355becdf
2 changed files with 8 additions and 2 deletions
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4
include/bpf.mk
View File

@ -27,7 +27,7 @@ LLVM_OPT:=$(LLVM_PATH)/opt$(LLVM_VER)
LLVM_STRIP:=$(LLVM_PATH)/llvm-strip$(LLVM_VER)
BPF_KARCH:=mips
BPF_ARCH:=mips$(if $(CONFIG_BIG_ENDIAN),,el)
BPF_ARCH:=mips$(if $(CONFIG_ARCH_64BIT),64)$(if $(CONFIG_BIG_ENDIAN),,el)
BPF_TARGET:=bpf$(if $(CONFIG_BIG_ENDIAN),eb,el)
BPF_HEADERS_DIR:=$(STAGING_DIR)/bpf-headers
@ -49,7 +49,7 @@ BPF_KERNEL_INCLUDE := \
BPF_CFLAGS := \
$(BPF_KERNEL_INCLUDE) -I$(PKG_BUILD_DIR) \
-D__KERNEL__ -D__BPF_TRACING__ \
-D__KERNEL__ -D__BPF_TRACING__ -DCONFIG_GENERIC_CSUM \
-D__TARGET_ARCH_${BPF_KARCH} \
-m$(if $(CONFIG_BIG_ENDIAN),big,little)-endian \
-fno-stack-protector -Wall \

6
package/kernel/bpf-headers/Makefile
View File

@ -63,9 +63,15 @@ endef
BPF_DOC = $(PKG_BUILD_DIR)/scripts/bpf_helpers_doc.py
define Build/Configure/64
echo 'CONFIG_CPU_MIPS64_R2=y' >> $(PKG_BUILD_DIR)/.config
echo 'CONFIG_64BIT=y' >> $(PKG_BUILD_DIR)/.config
endef
define Build/Configure
grep -vE 'CONFIG_(CPU_.*ENDIAN|HZ)' $(PKG_BUILD_DIR)/arch/mips/configs/generic_defconfig > $(PKG_BUILD_DIR)/.config
echo 'CONFIG_CPU_$(if $(CONFIG_BIG_ENDIAN),BIG,LITTLE)_ENDIAN=y' >> $(PKG_BUILD_DIR)/.config
$(if $(CONFIG_ARCH_64BIT),$(Build/Configure/64))
grep CONFIG_HZ $(REAL_LINUX_DIR)/.config >> $(PKG_BUILD_DIR)/.config
yes '' | $(KERNEL_MAKE) oldconfig
grep 'CONFIG_HZ=' $(REAL_LINUX_DIR)/.config | \