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bpf: Add bpf_link support for sk_msg and sk_skb progs

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Add bpf_link support for sk_msg and sk_skb programs. We have an
internal request to support bpf_link for sk_msg programs so user
space can have a uniform handling with bpf_link based libbpf
APIs. Using bpf_link based libbpf API also has a benefit which
makes system robust by decoupling prog life cycle and
attachment life cycle.

Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20240410043527.3737160-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yonghong Song
2024-04-09 21:35:27 -07:00
committed by Andrii Nakryiko
parent b521a722b9
commit 62217fb32a
1 changed files with 5 additions and 0 deletions
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5
include/uapi/linux/bpf.h
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@@ -1135,6 +1135,7 @@ enum bpf_link_type {
BPF_LINK_TYPE_TCX = 11,
BPF_LINK_TYPE_UPROBE_MULTI = 12,
BPF_LINK_TYPE_NETKIT = 13,
BPF_LINK_TYPE_SOCKMAP = 14,
__MAX_BPF_LINK_TYPE,
};
@@ -6724,6 +6725,10 @@ struct bpf_link_info {
__u32 ifindex;
__u32 attach_type;
} netkit;
struct {
__u32 map_id;
__u32 attach_type;
} sockmap;
};
} __attribute__((aligned(8)));