Hello Sean, On Tue, 6 Nov 2018 10:38:56 +0000, Sean Young <s...@mess.org> wrote:
> On Mon, Nov 05, 2018 at 09:30:47PM +0100, Peter Seiderer wrote: > > Copy from [1], needed by bpf.h. > > > > [1] > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/uapi/linux/bpf_common.h?h=v4.19 > > So bpf.h does include this file, but we don't use anything from it in > v4l-utils. > Maybe alternative fix is to remove the include (or not if your want the headers to be in sync with the kernel ones, but then they should be complete enough to be used for compile)? > This include file is for the original BPF, which has been around for a > long time. So why is this include file missing, i.e. what problem are you > trying to solve? A buildroot autobuild failure (see [1] for details) with older toolchains not providing this header... > > Lastely, the file should be included in the sync-with-kernel target so > it does not get out of sync -- should it really be necessary to add the > file. O.k, can do it on next patch iteration... Regards, Peter [1] http://lists.busybox.net/pipermail/buildroot/2018-November/234840.html > > > Sean > > > > > Signed-off-by: Peter Seiderer <ps.rep...@gmx.net> > > --- > > include/linux/bpf_common.h | 57 ++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 57 insertions(+) > > create mode 100644 include/linux/bpf_common.h > > > > diff --git a/include/linux/bpf_common.h b/include/linux/bpf_common.h > > new file mode 100644 > > index 00000000..ee97668b > > --- /dev/null > > +++ b/include/linux/bpf_common.h > > @@ -0,0 +1,57 @@ > > +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ > > +#ifndef _UAPI__LINUX_BPF_COMMON_H__ > > +#define _UAPI__LINUX_BPF_COMMON_H__ > > + > > +/* Instruction classes */ > > +#define BPF_CLASS(code) ((code) & 0x07) > > +#define BPF_LD 0x00 > > +#define BPF_LDX 0x01 > > +#define BPF_ST 0x02 > > +#define BPF_STX 0x03 > > +#define BPF_ALU 0x04 > > +#define BPF_JMP 0x05 > > +#define BPF_RET 0x06 > > +#define BPF_MISC 0x07 > > + > > +/* ld/ldx fields */ > > +#define BPF_SIZE(code) ((code) & 0x18) > > +#define BPF_W 0x00 /* 32-bit */ > > +#define BPF_H 0x08 /* 16-bit */ > > +#define BPF_B 0x10 /* 8-bit */ > > +/* eBPF BPF_DW 0x18 64-bit */ > > +#define BPF_MODE(code) ((code) & 0xe0) > > +#define BPF_IMM 0x00 > > +#define BPF_ABS 0x20 > > +#define BPF_IND 0x40 > > +#define BPF_MEM 0x60 > > +#define BPF_LEN 0x80 > > +#define BPF_MSH 0xa0 > > + > > +/* alu/jmp fields */ > > +#define BPF_OP(code) ((code) & 0xf0) > > +#define BPF_ADD 0x00 > > +#define BPF_SUB 0x10 > > +#define BPF_MUL 0x20 > > +#define BPF_DIV 0x30 > > +#define BPF_OR 0x40 > > +#define BPF_AND 0x50 > > +#define BPF_LSH 0x60 > > +#define BPF_RSH 0x70 > > +#define BPF_NEG 0x80 > > +#define BPF_MOD 0x90 > > +#define BPF_XOR 0xa0 > > + > > +#define BPF_JA 0x00 > > +#define BPF_JEQ 0x10 > > +#define BPF_JGT 0x20 > > +#define BPF_JGE 0x30 > > +#define BPF_JSET 0x40 > > +#define BPF_SRC(code) ((code) & 0x08) > > +#define BPF_K 0x00 > > +#define BPF_X 0x08 > > + > > +#ifndef BPF_MAXINSNS > > +#define BPF_MAXINSNS 4096 > > +#endif > > + > > +#endif /* _UAPI__LINUX_BPF_COMMON_H__ */ > > -- > > 2.19.1
