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samples/bpf: Fix dummy program unloading for xdp_redirect samples

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The xdp_redirect and xdp_redirect_map sample programs both load a dummy
program onto the egress interfaces. However, the unload code checks these
programs against the wrong id number, and thus refuses to unload them. Fix
the comparison to avoid this.

Fixes: 3b7a8ec2de ("samples/bpf: Check the prog id before exiting")
Signed-off-by: Toke Høiland-Jørgensen <[email protected]>
Acked-by: Maciej Fijalkowski <[email protected]>
Acked-by: Martin KaFai Lau <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
This commit is contained in:
Toke Høiland-Jørgensen 2019-02-21 17:05:39 +01:00 • committed by Daniel Borkmann
commit 915654fd71
2 changed files with 2 additions and 2 deletions
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2
samples/bpf/xdp_redirect_map_user.c
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@ -57,7 +57,7 @@ static void int_exit(int sig)
printf("bpf_get_link_xdp_id failed\n");
exit(1);
}
if (prog_id == curr_prog_id)
if (dummy_prog_id == curr_prog_id)
bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags);
else if (!curr_prog_id)
printf("couldn't find a prog id on iface OUT\n");

2
samples/bpf/xdp_redirect_user.c
View file

@ -57,7 +57,7 @@ static void int_exit(int sig)
printf("bpf_get_link_xdp_id failed\n");
exit(1);
}
if (prog_id == curr_prog_id)
if (dummy_prog_id == curr_prog_id)
bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags);
else if (!curr_prog_id)
printf("couldn't find a prog id on iface OUT\n");