diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c b/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c deleted file mode 100644 index 552f2090665c..000000000000 --- a/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c +++ /dev/null @@ -1,47 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (c) 2018 Facebook - -#include <linux/bpf.h> -#include <linux/pkt_cls.h> - -#include <string.h> - -#include <bpf/bpf_helpers.h> - -#define NUM_CGROUP_LEVELS 4 - -struct bpf_map_def SEC("maps") cgroup_ids = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(__u32), - .value_size = sizeof(__u64), - .max_entries = NUM_CGROUP_LEVELS, -}; - -static __always_inline void log_nth_level(struct __sk_buff *skb, __u32 level) -{ - __u64 id; - - /* [1] &level passed to external function that may change it, it's - * incompatible with loop unroll. - */ - id = bpf_skb_ancestor_cgroup_id(skb, level); - bpf_map_update_elem(&cgroup_ids, &level, &id, 0); -} - -SEC("cgroup_id_logger") -int log_cgroup_id(struct __sk_buff *skb) -{ - /* Loop unroll can't be used here due to [1]. Unrolling manually. - * Number of calls should be in sync with NUM_CGROUP_LEVELS. - */ - log_nth_level(skb, 0); - log_nth_level(skb, 1); - log_nth_level(skb, 2); - log_nth_level(skb, 3); - - return TC_ACT_OK; -} - -int _version SEC("version") = 1; - -char _license[] SEC("license") = "GPL"; |