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37a14cfd66
test_cgroup_storage is currently a standalone program which is not run when executing test_progs. Convert it to the test_progs framework so it can be automatically executed in CI. The conversion led to the following changes: - converted the raw bpf program in the userspace test file into a dedicated test program in progs/ dir - reduced the scope of cgroup_storage test: the content from this test overlaps with some other tests already present in test_progs, most notably netcnt and cgroup_storage_multi*. Those tests already check extensively local storage, per-cpu local storage, cgroups interaction, etc. So the new test only keep the part testing that the program return code (based on map content) properly leads to packet being passed or dropped. Reviewed-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com> Link: https://lore.kernel.org/r/20240813-convert_cgroup_tests-v4-2-a33c03458cf6@bootlin.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
24 lines
522 B
C
24 lines
522 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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struct {
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__uint(type, BPF_MAP_TYPE_CGROUP_STORAGE);
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__type(key, struct bpf_cgroup_storage_key);
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__type(value, __u64);
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} cgroup_storage SEC(".maps");
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SEC("cgroup_skb/egress")
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int bpf_prog(struct __sk_buff *skb)
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{
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__u64 *counter;
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counter = bpf_get_local_storage(&cgroup_storage, 0);
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__sync_fetch_and_add(counter, 1);
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/* Drop one out of every two packets */
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return (*counter & 1);
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}
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char _license[] SEC("license") = "GPL";
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