From a1f93c8fb0a836b6c891e51729f6cb98a1da47ba Mon Sep 17 00:00:00 2001 From: "Daniel T. Lee" Date: Sun, 15 Jan 2023 16:16:09 +0900 Subject: samples/bpf: replace legacy map with the BTF-defined map With libbpf 1.0 release, support for legacy BPF map declaration syntax had been dropped. If you run a program using legacy BPF in the latest libbpf, the following error will be output. libbpf: map 'lwt_len_hist_map' (legacy): legacy map definitions are deprecated, use BTF-defined maps instead libbpf: Use of BPF_ANNOTATE_KV_PAIR is deprecated, use BTF-defined maps in .maps section instead This commit replaces legacy map with the BTF-defined map. Signed-off-by: Daniel T. Lee Link: https://lore.kernel.org/r/20230115071613.125791-7-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov --- samples/bpf/lwt_len_hist_kern.c | 24 +++++++----------------- samples/bpf/test_cgrp2_tc_kern.c | 25 +++++++------------------ 2 files changed, 14 insertions(+), 35 deletions(-) (limited to 'samples/bpf') diff --git a/samples/bpf/lwt_len_hist_kern.c b/samples/bpf/lwt_len_hist_kern.c index 1fa14c54963a..44ea7b56760e 100644 --- a/samples/bpf/lwt_len_hist_kern.c +++ b/samples/bpf/lwt_len_hist_kern.c @@ -16,23 +16,13 @@ #include #include -struct bpf_elf_map { - __u32 type; - __u32 size_key; - __u32 size_value; - __u32 max_elem; - __u32 flags; - __u32 id; - __u32 pinning; -}; - -struct bpf_elf_map SEC("maps") lwt_len_hist_map = { - .type = BPF_MAP_TYPE_PERCPU_HASH, - .size_key = sizeof(__u64), - .size_value = sizeof(__u64), - .pinning = 2, - .max_elem = 1024, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_HASH); + __type(key, u64); + __type(value, u64); + __uint(pinning, LIBBPF_PIN_BY_NAME); + __uint(max_entries, 1024); +} lwt_len_hist_map SEC(".maps"); static unsigned int log2(unsigned int v) { diff --git a/samples/bpf/test_cgrp2_tc_kern.c b/samples/bpf/test_cgrp2_tc_kern.c index 4dd532a312b9..737ce3eb8944 100644 --- a/samples/bpf/test_cgrp2_tc_kern.c +++ b/samples/bpf/test_cgrp2_tc_kern.c @@ -19,24 +19,13 @@ struct eth_hdr { unsigned short h_proto; }; -#define PIN_GLOBAL_NS 2 -struct bpf_elf_map { - __u32 type; - __u32 size_key; - __u32 size_value; - __u32 max_elem; - __u32 flags; - __u32 id; - __u32 pinning; -}; - -struct bpf_elf_map SEC("maps") test_cgrp2_array_pin = { - .type = BPF_MAP_TYPE_CGROUP_ARRAY, - .size_key = sizeof(uint32_t), - .size_value = sizeof(uint32_t), - .pinning = PIN_GLOBAL_NS, - .max_elem = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_CGROUP_ARRAY); + __type(key, u32); + __type(value, u32); + __uint(pinning, LIBBPF_PIN_BY_NAME); + __uint(max_entries, 1); +} test_cgrp2_array_pin SEC(".maps"); SEC("filter") int handle_egress(struct __sk_buff *skb) -- cgit v1.2.3