4 Commits (a3832e4594832c8af058908ab230c8a60b09fd22)

Author	SHA1	Message	Date
Jesper Dangaard Brouer	7906c521cd	ebpf: take clang -target bpf include issue of stdint.h into account ... This patch prepares code before enabling the clang -target bpf. The clang compiler does not like #include <stdint.h> when using '-target bpf' it will fail with: fatal error: 'gnu/stubs-32.h' file not found This is because using clang -target bpf, then clang will have '__bpf__' defined instead of '__x86_64__' hence the gnu/stubs-32.h include attempt as /usr/include/gnu/stubs.h contains, on x86_64: #if !defined __x86_64__ # include <gnu/stubs-32.h> #endif #if defined __x86_64__ && defined __LP64__ # include <gnu/stubs-64.h> #endif #if defined __x86_64__ && defined __ILP32__ # include <gnu/stubs-x32.h> #endif This can be worked around by installing the 32-bit version of glibc-devel.i686 on your distribution. But the BPF programs does not really need to include stdint.h, if converting: uint64_t -> __u64 uint32_t -> __u32 uint16_t -> __u16 uint8_t -> __u8 This patch does this type syntax conversion. The build of a ebpf files had an issue for system like Debian because they don't have a asm/types.h in the include path if the architecture is not defined which is the case due to target bpf. This results in: clang-5.0 -Wall -Iinclude -O2 \ -D__KERNEL__ -D__ASM_SYSREG_H \ -target bpf -S -emit-llvm vlan_filter.c -o vlan_filter.ll In file included from vlan_filter.c:19: In file included from include/linux/bpf.h:11: /usr/include/linux/types.h:5:10: fatal error: 'asm/types.h' file not found #include <asm/types.h> ^~~~~~~~~~~~~ 1 error generated. Makefile:523: recipe for target 'vlan_filter.bpf' failed This patch fixes the issue by adding a include path setting the architecture to the one of the builder. Signed-off-by: Jesper Dangaard Brouer <netoptimizer@brouer.com> Sidned-off-by: Eric Leblond <eric@regit.org>	8 years ago
Eric Leblond	bc34703c09	ebpf: add some comments to eBPF filter	8 years ago
Eric Leblond	cde438f670	af-packet: add missing copyright header ... And also fixes the copyright date in some files.	8 years ago
Eric Leblond	91e1256b01	af-packet: add support for eBPF cluster and filter ... This patch introduces the ebpf cluster mode. This mode is using an extended BPF function that is loaded into the kernel and provide the load balancing. An example of cluster function is provided in the ebpf subdirectory and provide ippair load balancing function. This is a function which uses the same method as the one used in autofp ippair to provide a symetrical load balancing based on IP addresses. A simple filter example allowing to drop IPv6 is added to the source. This patch also prepares the infrastructure to be able to load and use map inside eBPF files. This will be used later for flow bypass.	8 years ago