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author | Joanne Koong <joannelkoong@gmail.com> | 2023-03-01 07:49:44 -0800 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2023-03-01 09:55:23 -0800 |
commit | 2f46439346700a2b41cf0fa9432f110f42fd8821 (patch) | |
tree | 504f1d5455276eb71c7de107450f16bc32dc99f9 /include/linux/bpf_verifier.h | |
parent | ae256f95478e07d49dae5036bb83c09dfbd686d4 (diff) |
bpf: Support "sk_buff" and "xdp_buff" as valid kfunc arg types
The bpf mirror of the in-kernel sk_buff and xdp_buff data structures are
__sk_buff and xdp_md. Currently, when we pass in the program ctx to a
kfunc where the program ctx is a skb or xdp buffer, we reject the
program if the in-kernel definition is sk_buff/xdp_buff instead of
__sk_buff/xdp_md.
This change allows "sk_buff <--> __sk_buff" and "xdp_buff <--> xdp_md"
to be recognized as valid matches. The user program may pass in their
program ctx as a __sk_buff or xdp_md, and the in-kernel definition
of the kfunc may define this arg as a sk_buff or xdp_buff.
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Link: https://lore.kernel.org/r/20230301154953.641654-2-joannelkoong@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/bpf_verifier.h')
0 files changed, 0 insertions, 0 deletions