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| author | Yonghong Song <yhs@fb.com> | 2020-05-13 11:02:21 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-13 12:30:50 -0700 |
| commit | 3c32cc1bceba8a1755dc35cd97516f6c67856844 (patch) | |
| tree | 10e978c4bc1374703070d8ecee9e4e007b13183b /net/ipv6/ip6_fib.c | |
| parent | ab2ee4fcb9d61fd57db70db694adbcf54662bd80 (diff) | |
| download | linux-next-3c32cc1bceba8a1755dc35cd97516f6c67856844.tar.gz | |
bpf: Enable bpf_iter targets registering ctx argument types
Commit b121b341e598 ("bpf: Add PTR_TO_BTF_ID_OR_NULL
support") adds a field btf_id_or_null_non0_off to
bpf_prog->aux structure to indicate that the
first ctx argument is PTR_TO_BTF_ID reg_type and
all others are PTR_TO_BTF_ID_OR_NULL.
This approach does not really scale if we have
other different reg types in the future, e.g.,
a pointer to a buffer.
This patch enables bpf_iter targets registering ctx argument
reg types which may be different from the default one.
For example, for pointers to structures, the default reg_type
is PTR_TO_BTF_ID for tracing program. The target can register
a particular pointer type as PTR_TO_BTF_ID_OR_NULL which can
be used by the verifier to enforce accesses.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200513180221.2949882-1-yhs@fb.com
Diffstat (limited to 'net/ipv6/ip6_fib.c')
| -rw-r--r-- | net/ipv6/ip6_fib.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index a1fcc0ca21af..250ff52c674e 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -2638,11 +2638,6 @@ static void ipv6_route_native_seq_stop(struct seq_file *seq, void *v) } #if IS_BUILTIN(CONFIG_IPV6) && defined(CONFIG_BPF_SYSCALL) -struct bpf_iter__ipv6_route { - __bpf_md_ptr(struct bpf_iter_meta *, meta); - __bpf_md_ptr(struct fib6_info *, rt); -}; - static int ipv6_route_prog_seq_show(struct bpf_prog *prog, struct bpf_iter_meta *meta, void *v) |