Messages in this thread | | | From | Song Liu <> | Date | Wed, 18 Aug 2021 10:49:10 -0700 | Subject | Re: [PATCH bpf-next v2 1/2] bpf: Allow bpf_get_netns_cookie in BPF_PROG_TYPE_SOCK_OPS |
| |
On Wed, Aug 18, 2021 at 4:00 AM Xu Liu <liuxu623@gmail.com> wrote: > > We'd like to be able to identify netns from sockops hooks > to accelerate local process communication form different netns. > > Signed-off-by: Xu Liu <liuxu623@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
> --- > net/core/filter.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/net/core/filter.c b/net/core/filter.c > index d70187ce851b..34938a537931 100644 > --- a/net/core/filter.c > +++ b/net/core/filter.c > @@ -4664,6 +4664,18 @@ static const struct bpf_func_proto bpf_get_netns_cookie_sock_addr_proto = { > .arg1_type = ARG_PTR_TO_CTX_OR_NULL, > }; > > +BPF_CALL_1(bpf_get_netns_cookie_sock_ops, struct bpf_sock_ops_kern *, ctx) > +{ > + return __bpf_get_netns_cookie(ctx ? ctx->sk : NULL); > +} > + > +static const struct bpf_func_proto bpf_get_netns_cookie_sock_ops_proto = { > + .func = bpf_get_netns_cookie_sock_ops, > + .gpl_only = false, > + .ret_type = RET_INTEGER, > + .arg1_type = ARG_PTR_TO_CTX_OR_NULL, > +}; > + > BPF_CALL_1(bpf_get_socket_uid, struct sk_buff *, skb) > { > struct sock *sk = sk_to_full_sk(skb->sk); > @@ -7445,6 +7457,8 @@ sock_ops_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) > return &bpf_sk_storage_get_proto; > case BPF_FUNC_sk_storage_delete: > return &bpf_sk_storage_delete_proto; > + case BPF_FUNC_get_netns_cookie: > + return &bpf_get_netns_cookie_sock_ops_proto; > #ifdef CONFIG_INET > case BPF_FUNC_load_hdr_opt: > return &bpf_sock_ops_load_hdr_opt_proto; > -- > 2.28.0 >
| |