From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chenbo Feng Subject: [PATCH net-next v2] Add uid and cookie bpf helper to cg_skb_func_proto Date: Fri, 14 Apr 2017 18:25:26 -0700 Message-ID: <1492219526-2945-1-git-send-email-chenbofeng.kernel@gmail.com> Cc: Lorenzo Colitti , Willem de Bruijn , Chenbo Feng To: netdev@vger.kernel.org Return-path: Received: from mail-pg0-f68.google.com ([74.125.83.68]:34097 "EHLO mail-pg0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751258AbdDOBZf (ORCPT ); Fri, 14 Apr 2017 21:25:35 -0400 Received: by mail-pg0-f68.google.com with SMTP id o123so18406692pga.1 for ; Fri, 14 Apr 2017 18:25:35 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: From: Chenbo Feng BPF helper functions get_socket_cookie and get_socket_uid can be used for network traffic classifications, among others. Expose them also to programs of type BPF_PROG_TYPE_CGROUP_SKB. As of commit 8f917bba0042 ("bpf: pass sk to helper functions") the required skb->sk function is available at both cgroup bpf ingress and egress hooks. With these two new helper, cg_skb_func_proto is effectively the same as sk_filter_func_proto. Change since V1: Instead of add the helper to cg_skb_func_proto, redirect the cg_skb_func_proto to sk_filter_func_proto since all helper function in sk_filter_func_proto are applicable to cg_skb_func_proto now. Signed-off-by: Chenbo Feng --- net/core/filter.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/net/core/filter.c b/net/core/filter.c index ce2a19d..19be954 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2766,12 +2766,7 @@ xdp_func_proto(enum bpf_func_id func_id) static const struct bpf_func_proto * cg_skb_func_proto(enum bpf_func_id func_id) { - switch (func_id) { - case BPF_FUNC_skb_load_bytes: - return &bpf_skb_load_bytes_proto; - default: - return bpf_base_func_proto(func_id); - } + return sk_filter_func_proto(func_id); } static const struct bpf_func_proto * -- 2.7.4