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UPSTREAM: bpf: Refactor bpf_iter_reg to have separate seq_info member

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There is no functionality change for this patch.
Struct bpf_iter_reg is used to register a bpf_iter target,
which includes information for both prog_load, link_create
and seq_file creation.

This patch puts fields related seq_file creation into
a different structure. This will be useful for map
elements iterator where one iterator covers different
map types and different map types may have different
seq_ops, init/fini private_data function and
private_data size.

Change-Id: I2577d77f6b6be71319457720547ba77cff04c68b
Signed-off-by: Yonghong Song <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
This commit is contained in:
Yonghong Song 2020-07-23 11:41:09 -07:00 • committed by basamaryan
commit ecc4d9f640
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GPG key ID: 210D5384FB2A5885
9 changed files with 64 additions and 29 deletions
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8
net/ipv4/tcp_ipv4.c
View file

@ -2925,17 +2925,21 @@ static void bpf_iter_fini_tcp(void *priv_data)
bpf_iter_fini_seq_net(priv_data);
}
static struct bpf_iter_reg tcp_reg_info = {
.target = "tcp",
static const struct bpf_iter_seq_info tcp_seq_info = {
.seq_ops = &bpf_iter_tcp_seq_ops,
.init_seq_private = bpf_iter_init_tcp,
.fini_seq_private = bpf_iter_fini_tcp,
.seq_priv_size = sizeof(struct tcp_iter_state),
};
static struct bpf_iter_reg tcp_reg_info = {
.target = "tcp",
.ctx_arg_info_size = 1,
.ctx_arg_info = {
{ offsetof(struct bpf_iter__tcp, sk_common),
PTR_TO_BTF_ID_OR_NULL },
},
.seq_info = &tcp_seq_info,
};
static void __init bpf_iter_register(void)

8
net/ipv4/udp.c
View file

@ -3209,17 +3209,21 @@ static void bpf_iter_fini_udp(void *priv_data)
bpf_iter_fini_seq_net(priv_data);
}
static struct bpf_iter_reg udp_reg_info = {
.target = "udp",
static const struct bpf_iter_seq_info udp_seq_info = {
.seq_ops = &bpf_iter_udp_seq_ops,
.init_seq_private = bpf_iter_init_udp,
.fini_seq_private = bpf_iter_fini_udp,
.seq_priv_size = sizeof(struct udp_iter_state),
};
static struct bpf_iter_reg udp_reg_info = {
.target = "udp",
.ctx_arg_info_size = 1,
.ctx_arg_info = {
{ offsetof(struct bpf_iter__udp, udp_sk),
PTR_TO_BTF_ID_OR_NULL },
},
.seq_info = &udp_seq_info,
};
static void __init bpf_iter_register(void)