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libbpf: Support creating and destroying qdisc

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Extend struct bpf_tc_hook with handle, qdisc name and a new attach type,
BPF_TC_QDISC, to allow users to add or remove any qdisc specified in
addition to clsact.

Signed-off-by: Amery Hung <amery.hung@bytedance.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250409214606.2000194-8-ameryhung@gmail.com
This commit is contained in:
Amery Hung
2025-04-09 14:46:03 -07:00
committed by Andrii Nakryiko
parent 52b9b38a22
commit f580871b42
2 changed files with 21 additions and 4 deletions
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5
src/libbpf.h
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@@ -1289,6 +1289,7 @@ enum bpf_tc_attach_point {
BPF_TC_INGRESS = 1 << 0,
BPF_TC_EGRESS = 1 << 1,
BPF_TC_CUSTOM = 1 << 2,
BPF_TC_QDISC = 1 << 3,
};
#define BPF_TC_PARENT(a, b) \
@@ -1303,9 +1304,11 @@ struct bpf_tc_hook {
int ifindex;
enum bpf_tc_attach_point attach_point;
__u32 parent;
__u32 handle;
const char *qdisc;
size_t :0;
};
#define bpf_tc_hook__last_field parent
#define bpf_tc_hook__last_field qdisc
struct bpf_tc_opts {
size_t sz;