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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2020-05-12 18:30:40 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-14 18:27:00 -0700 |
| commit | 6a09815428547657f3ffd2f5c31ac2a191e7fdf3 (patch) | |
| tree | 6c0440b39af3f58237445d117e75369a71a69e78 /samples/bpf/xdp_redirect_cpu_kern.c | |
| parent | 8f4605ac3e64cbb929df1fa09d5c6cdf3f195e7b (diff) | |
samples/bpf: xdp_redirect_cpu: Set MAX_CPUS according to NR_CPUS
xdp_redirect_cpu is currently failing in bpf_prog_load_xattr()
allocating cpu_map map if CONFIG_NR_CPUS is less than 64 since
cpu_map_alloc() requires max_entries to be less than NR_CPUS.
Set cpu_map max_entries according to NR_CPUS in xdp_redirect_cpu_kern.c
and get currently running cpus in xdp_redirect_cpu_user.c
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/374472755001c260158c4e4b22f193bdd3c56fb7.1589300442.git.lorenzo@kernel.org
Diffstat (limited to 'samples/bpf/xdp_redirect_cpu_kern.c')
| -rw-r--r-- | samples/bpf/xdp_redirect_cpu_kern.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/xdp_redirect_cpu_kern.c b/samples/bpf/xdp_redirect_cpu_kern.c index 313a8fe6d125..2baf8db1f7e7 100644 --- a/samples/bpf/xdp_redirect_cpu_kern.c +++ b/samples/bpf/xdp_redirect_cpu_kern.c @@ -15,7 +15,7 @@ #include <bpf/bpf_helpers.h> #include "hash_func01.h" -#define MAX_CPUS 64 /* WARNING - sync with _user.c */ +#define MAX_CPUS NR_CPUS /* Special map type that can XDP_REDIRECT frames to another CPU */ struct { |