Commit bbf29d3a authored by Kumar Kartikeya Dwivedi's avatar Kumar Kartikeya Dwivedi Committed by Daniel Borkmann
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libbpf: Set NLM_F_EXCL when creating qdisc 



This got lost during the refactoring across versions. We always use
NLM_F_EXCL when creating some TC object, so reflect what the function
says and set the flag.

Fixes: 715c5ce4 ("libbpf: Add low level TC-BPF management API")
Signed-off-by: default avatarKumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210612023502.1283837-3-memxor@gmail.com
parent 4e164f87

tools/lib/bpf/netlink.c

+1 −1
Original line number Diff line number Diff line
@@ -457,7 +457,7 @@ static int tc_qdisc_modify(struct bpf_tc_hook *hook, int cmd, int flags) 


static int tc_qdisc_create_excl(struct bpf_tc_hook *hook)

{

	return tc_qdisc_modify(hook, RTM_NEWQDISC, NLM_F_CREATE);

	return tc_qdisc_modify(hook, RTM_NEWQDISC, NLM_F_CREATE | NLM_F_EXCL);

}



static int tc_qdisc_delete(struct bpf_tc_hook *hook)