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bpf: net: Refactor bpf_iter target registration

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Currently bpf_iter_reg_target takes parameters from target
and allocates memory to save them. This is really not
necessary, esp. in the future we may grow information
passed from targets to bpf_iter manager.

The patch refactors the code so target reg_info
becomes static and bpf_iter manager can just take
a reference to it.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200513180219.2949605-1-yhs@fb.com
This commit is contained in:
Yonghong Song
2020-05-13 11:02:19 -07:00
committed by Alexei Starovoitov
parent 2e3ed68bfc
commit 15172a46fa
6 changed files with 61 additions and 61 deletions
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18
net/ipv6/route.c
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@@ -6397,17 +6397,17 @@ void __init ip6_route_init_special_entries(void)
#if defined(CONFIG_BPF_SYSCALL) && defined(CONFIG_PROC_FS)
DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
static const struct bpf_iter_reg ipv6_route_reg_info = {
.target = "ipv6_route",
.seq_ops = &ipv6_route_seq_ops,
.init_seq_private = bpf_iter_init_seq_net,
.fini_seq_private = bpf_iter_fini_seq_net,
.seq_priv_size = sizeof(struct ipv6_route_iter),
};
static int __init bpf_iter_register(void)
{
struct bpf_iter_reg reg_info = {
.target = "ipv6_route",
.seq_ops = &ipv6_route_seq_ops,
.init_seq_private = bpf_iter_init_seq_net,
.fini_seq_private = bpf_iter_fini_seq_net,
.seq_priv_size = sizeof(struct ipv6_route_iter),
};
return bpf_iter_reg_target(&reg_info);
return bpf_iter_reg_target(&ipv6_route_reg_info);
}
static void bpf_iter_unregister(void)