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tools: bpftool: improve architecture detection by using ifindex

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The current architecture detection method in bpftool is designed for host
case.

For offload case, we can't use the architecture of "bpftool" itself.
Instead, we could call the existing "ifindex_to_name_ns" to get DEVNAME,
then read pci id from /sys/class/dev/DEVNAME/device/vendor, finally we map
vendor id to bfd arch name which will finally be used to select bfd backend
for the disassembler.

Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jiong Wang 2018-01-16 16:05:21 -08:00 • committed by Daniel Borkmann
parent eb1d7db927
commit e65935969d
4 changed files with 102 additions and 3 deletions
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5
tools/bpf/bpftool/main.h
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@ -121,7 +121,10 @@ int do_cgroup(int argc, char **arg);
int prog_parse_fd(int *argc, char ***argv);
void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes);
void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
const char *arch);
void print_hex_data_json(uint8_t *data, size_t len);
const char *ifindex_to_bfd_name_ns(__u32 ifindex, __u64 ns_dev, __u64 ns_ino);
#endif