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| author | Yonghong Song <yhs@fb.com> | 2020-07-20 18:34:03 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-07-21 22:26:26 +0200 |
| commit | 951cf368bcb11d6f817709660cf5cd914072c36f (patch) | |
| tree | 521419b293f6fd3b2e1d201bbb4ca49f9e9e5ce5 /net/ipv4/udp.c | |
| parent | bpf: Make btf_sock_ids global (diff) | |
| download | linux-951cf368bcb11d6f817709660cf5cd914072c36f.tar.xz linux-951cf368bcb11d6f817709660cf5cd914072c36f.zip | |
bpf: net: Use precomputed btf_id for bpf iterators
One additional field btf_id is added to struct
bpf_ctx_arg_aux to store the precomputed btf_ids.
The btf_id is computed at build time with
BTF_ID_LIST or BTF_ID_LIST_GLOBAL macro definitions.
All existing bpf iterators are changed to used
pre-compute btf_ids.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200720163403.1393551-1-yhs@fb.com
Diffstat (limited to 'net/ipv4/udp.c')
| -rw-r--r-- | net/ipv4/udp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index b738c63d7a77..b5231ab350e0 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -106,6 +106,7 @@ #include <net/xfrm.h> #include <trace/events/udp.h> #include <linux/static_key.h> +#include <linux/btf_ids.h> #include <trace/events/skb.h> #include <net/busy_poll.h> #include "udp_impl.h" @@ -3232,7 +3233,7 @@ static void bpf_iter_fini_udp(void *priv_data) bpf_iter_fini_seq_net(priv_data); } -static const struct bpf_iter_reg udp_reg_info = { +static struct bpf_iter_reg udp_reg_info = { .target = "udp", .seq_ops = &bpf_iter_udp_seq_ops, .init_seq_private = bpf_iter_init_udp, @@ -3247,6 +3248,7 @@ static const struct bpf_iter_reg udp_reg_info = { static void __init bpf_iter_register(void) { + udp_reg_info.ctx_arg_info[0].btf_id = btf_sock_ids[BTF_SOCK_TYPE_UDP]; if (bpf_iter_reg_target(&udp_reg_info)) pr_warn("Warning: could not register bpf iterator udp\n"); } |