From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Pirko Subject: [patch net-next 6/9] net: sched: cls_flower: propagate chain teplate creation and destruction to drivers Date: Mon, 25 Jun 2018 23:01:45 +0200 Message-ID: <20180625210148.9386-7-jiri@resnulli.us> References: <20180625210148.9386-1-jiri@resnulli.us> Cc: davem@davemloft.net, jhs@mojatatu.com, xiyou.wangcong@gmail.com, jakub.kicinski@netronome.com, simon.horman@netronome.com, john.hurley@netronome.com, dsahern@gmail.com, mlxsw@mellanox.com To: netdev@vger.kernel.org Return-path: Received: from mail-wr0-f178.google.com ([209.85.128.178]:38673 "EHLO mail-wr0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752042AbeFYVDQ (ORCPT ); Mon, 25 Jun 2018 17:03:16 -0400 Received: by mail-wr0-f178.google.com with SMTP id e18-v6so15031483wrs.5 for ; Mon, 25 Jun 2018 14:03:15 -0700 (PDT) In-Reply-To: <20180625210148.9386-1-jiri@resnulli.us> Sender: netdev-owner@vger.kernel.org List-ID: From: Jiri Pirko Introduce a couple of flower offload commands in order to propagate template creation/destruction events down to device drivers. Drivers may use this information to prepare HW in an optimal way for future filter insertions. Signed-off-by: Jiri Pirko --- include/net/pkt_cls.h | 2 ++ net/sched/cls_flower.c | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h index a3c1a2c47cd4..e83968cf9a70 100644 --- a/include/net/pkt_cls.h +++ b/include/net/pkt_cls.h @@ -715,6 +715,8 @@ enum tc_fl_command { TC_CLSFLOWER_REPLACE, TC_CLSFLOWER_DESTROY, TC_CLSFLOWER_STATS, + TC_CLSFLOWER_TMPLT_CREATE, + TC_CLSFLOWER_TMPLT_DESTROY, }; struct tc_cls_flower_offload { diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index d64d43843a3a..276ba25a09c3 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -1120,6 +1120,43 @@ static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg) } } +static void fl_hw_create_tmplt(struct tcf_chain *chain, + struct fl_flow_tmplt *tmplt, + struct netlink_ext_ack *extack) +{ + struct tc_cls_flower_offload cls_flower = {}; + struct tcf_block *block = chain->block; + struct tcf_exts dummy_exts = { 0, }; + + cls_flower.common.chain_index = chain->index; + cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE; + cls_flower.cookie = (unsigned long) tmplt; + cls_flower.dissector = &tmplt->dissector; + cls_flower.mask = &tmplt->mask; + cls_flower.key = &tmplt->dummy_key; + cls_flower.exts = &dummy_exts; + + /* We don't care if driver (any of them) fails to handle this + * call. It serves just as a hint for it. + */ + tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER, + &cls_flower, false); +} + +static void fl_hw_destroy_tmplt(struct tcf_chain *chain, + struct fl_flow_tmplt *tmplt) +{ + struct tc_cls_flower_offload cls_flower = {}; + struct tcf_block *block = chain->block; + + cls_flower.common.chain_index = chain->index; + cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY; + cls_flower.cookie = (unsigned long) tmplt; + + tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER, + &cls_flower, false); +} + static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain, struct nlattr **tca, struct netlink_ext_ack *extack) @@ -1150,6 +1187,8 @@ static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain, fl_init_dissector(&tmplt->dissector, &tmplt->mask); + fl_hw_create_tmplt(chain, tmplt, extack); + return tmplt; errout_tmplt: @@ -1163,6 +1202,7 @@ static void fl_tmplt_destroy(void *tmplt_priv) { struct fl_flow_tmplt *tmplt = tmplt_priv; + fl_hw_destroy_tmplt(tmplt->chain, tmplt); kfree(tmplt); } -- 2.14.4