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[2620:137:e000::1:20]) by mx.google.com with ESMTP id j4-20020a056a00174400b0058132d2d5b3si874253pfc.288.2023.01.06.00.55.47; Fri, 06 Jan 2023 00:56:01 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@microchip.com header.s=mchp header.b=WhdG3Lxl; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=microchip.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232453AbjAFIyJ (ORCPT + 99 others); Fri, 6 Jan 2023 03:54:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58426 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232180AbjAFIxw (ORCPT ); Fri, 6 Jan 2023 03:53:52 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 466D36879C; Fri, 6 Jan 2023 00:53:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1672995228; x=1704531228; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OdwW15wb3TzK5jukBjTcmQZg/MKAK7ItMxXXbN8vvFQ=; b=WhdG3LxlNHfyCpQluc8vmakVlr9oUaF7T50w+jXjPw71K4flygxmR19G ISadKWK5oSItw75sikI6zq3gKVFLhSXm+knKtUJAk031jZgIrSo/0v+mW DoVx3sch3Zxyikwi91WPDZ8twtI5PYwbK5SD2IuFun0g0V6oTCJS91pJd dkyP6MV/DO18e+7NsCIiHQ/eWQco/fZwmZsg9beWhlfrSZCn3h3gXzj3A Z42gTt4NDo6llm5hxr8qqIU+JN9fT/hxdN2vCAP1HBDJr3SOLOHbodXz1 5H4Fj+4dkytF3lCc02/++N17+9nerb8cyiuXMbMLXMTtSaSW9LsQQja5k w==; X-IronPort-AV: E=Sophos;i="5.96,304,1665471600"; d="scan'208";a="206646904" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 06 Jan 2023 01:53:47 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Fri, 6 Jan 2023 01:53:47 -0700 Received: from den-dk-m31857.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.16 via Frontend Transport; Fri, 6 Jan 2023 01:53:43 -0700 From: Steen Hegelund To: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: Steen Hegelund , , Randy Dunlap , "Casper Andersson" , Russell King , Wan Jiabing , "Nathan Huckleberry" , , , , "Steen Hegelund" , Daniel Machon , Horatiu Vultur , Lars Povlsen , Dan Carpenter , Michael Walle Subject: [PATCH net-next v2 5/8] net: microchip: vcap api: Use src and dst chain id to chain VCAP lookups Date: Fri, 6 Jan 2023 09:53:14 +0100 Message-ID: <20230106085317.1720282-6-steen.hegelund@microchip.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230106085317.1720282-1-steen.hegelund@microchip.com> References: <20230106085317.1720282-1-steen.hegelund@microchip.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754262783793635333?= X-GMAIL-MSGID: =?utf-8?q?1754262783793635333?= This adds both the source and destination chain id to the information kept for enabled port lookups. This allows enabling and disabling a chain of lookups by walking the chain information for a port. This changes the way that VCAP lookups are enabled from userspace: instead of one matchall rule that enables all the 4 Sparx5 IS2 lookups, you need a matchall rule per lookup. In practice that is done by adding one matchall rule in chain 0 to goto IS2 Lookup 0, and then for each lookup you add a rule per lookup (low priority) that does a goto to the next lookup chain. Examples: If you want IS2 Lookup 0 to be enabled you add the same matchall filter as before: tc filter add dev eth12 ingress chain 0 prio 1000 handle 1000 matchall \ skip_sw action goto chain 8000000 If you also want to enable lookup 1 to 3 in IS2 and chain them you need to add the following matchall filters: tc filter add dev eth12 ingress chain 8000000 prio 1000 handle 1000 \ matchall skip_sw action goto chain 8100000 tc filter add dev eth12 ingress chain 8100000 prio 1000 handle 1000 \ matchall skip_sw action goto chain 8200000 tc filter add dev eth12 ingress chain 8200000 prio 1000 handle 1000 \ matchall skip_sw action goto chain 8300000 Fixes: 4426b78c626d ("net: lan966x: Add port keyset config and callback interface") Signed-off-by: Horatiu Vultur Signed-off-by: Steen Hegelund --- .../ethernet/microchip/lan966x/lan966x_goto.c | 10 +- .../ethernet/microchip/lan966x/lan966x_main.h | 3 +- .../microchip/lan966x/lan966x_tc_matchall.c | 16 +-- .../microchip/sparx5/sparx5_tc_matchall.c | 16 +-- .../net/ethernet/microchip/vcap/vcap_api.c | 126 ++++++++++-------- .../ethernet/microchip/vcap/vcap_api_client.h | 5 +- 6 files changed, 92 insertions(+), 84 deletions(-) diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_goto.c b/drivers/net/ethernet/microchip/lan966x/lan966x_goto.c index bf0cfe24a8fc..9b18156eea1a 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_goto.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_goto.c @@ -4,7 +4,7 @@ #include "vcap_api_client.h" int lan966x_goto_port_add(struct lan966x_port *port, - struct flow_action_entry *act, + int from_cid, int to_cid, unsigned long goto_id, struct netlink_ext_ack *extack) { @@ -12,7 +12,7 @@ int lan966x_goto_port_add(struct lan966x_port *port, int err; err = vcap_enable_lookups(lan966x->vcap_ctrl, port->dev, - act->chain_index, goto_id, + from_cid, to_cid, goto_id, true); if (err == -EFAULT) { NL_SET_ERR_MSG_MOD(extack, "Unsupported goto chain"); @@ -29,8 +29,6 @@ int lan966x_goto_port_add(struct lan966x_port *port, return err; } - port->tc.goto_id = goto_id; - return 0; } @@ -41,14 +39,12 @@ int lan966x_goto_port_del(struct lan966x_port *port, struct lan966x *lan966x = port->lan966x; int err; - err = vcap_enable_lookups(lan966x->vcap_ctrl, port->dev, 0, + err = vcap_enable_lookups(lan966x->vcap_ctrl, port->dev, 0, 0, goto_id, false); if (err) { NL_SET_ERR_MSG_MOD(extack, "Could not disable VCAP lookups"); return err; } - port->tc.goto_id = 0; - return 0; } diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h index 3491f1961835..0106f9487cbe 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h @@ -332,7 +332,6 @@ struct lan966x_port_tc { unsigned long police_id; unsigned long ingress_mirror_id; unsigned long egress_mirror_id; - unsigned long goto_id; struct flow_stats police_stat; struct flow_stats mirror_stat; }; @@ -607,7 +606,7 @@ int lan966x_tc_flower(struct lan966x_port *port, struct flow_cls_offload *f); int lan966x_goto_port_add(struct lan966x_port *port, - struct flow_action_entry *act, + int from_cid, int to_cid, unsigned long goto_id, struct netlink_ext_ack *extack); int lan966x_goto_port_del(struct lan966x_port *port, diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_tc_matchall.c b/drivers/net/ethernet/microchip/lan966x/lan966x_tc_matchall.c index a539abaad9b6..20627323d656 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_tc_matchall.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_tc_matchall.c @@ -24,7 +24,8 @@ static int lan966x_tc_matchall_add(struct lan966x_port *port, return lan966x_mirror_port_add(port, act, f->cookie, ingress, f->common.extack); case FLOW_ACTION_GOTO: - return lan966x_goto_port_add(port, act, f->cookie, + return lan966x_goto_port_add(port, f->common.chain_index, + act->chain_index, f->cookie, f->common.extack); default: NL_SET_ERR_MSG_MOD(f->common.extack, @@ -46,13 +47,8 @@ static int lan966x_tc_matchall_del(struct lan966x_port *port, f->cookie == port->tc.egress_mirror_id) { return lan966x_mirror_port_del(port, ingress, f->common.extack); - } else if (f->cookie == port->tc.goto_id) { - return lan966x_goto_port_del(port, f->cookie, - f->common.extack); } else { - NL_SET_ERR_MSG_MOD(f->common.extack, - "Unsupported action"); - return -EOPNOTSUPP; + return lan966x_goto_port_del(port, f->cookie, f->common.extack); } return 0; @@ -80,12 +76,6 @@ int lan966x_tc_matchall(struct lan966x_port *port, struct tc_cls_matchall_offload *f, bool ingress) { - if (!tc_cls_can_offload_and_chain0(port->dev, &f->common)) { - NL_SET_ERR_MSG_MOD(f->common.extack, - "Only chain zero is supported"); - return -EOPNOTSUPP; - } - switch (f->command) { case TC_CLSMATCHALL_REPLACE: return lan966x_tc_matchall_add(port, f, ingress); diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c index 30dd61e5d150..d88a93f22606 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_tc_matchall.c @@ -31,6 +31,7 @@ static int sparx5_tc_matchall_replace(struct net_device *ndev, switch (action->id) { case FLOW_ACTION_GOTO: err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev, + tmo->common.chain_index, action->chain_index, tmo->cookie, true); if (err == -EFAULT) { @@ -43,6 +44,11 @@ static int sparx5_tc_matchall_replace(struct net_device *ndev, "VCAP already enabled"); return -EOPNOTSUPP; } + if (err == -EADDRNOTAVAIL) { + NL_SET_ERR_MSG_MOD(tmo->common.extack, + "Already matching this chain"); + return -EOPNOTSUPP; + } if (err) { NL_SET_ERR_MSG_MOD(tmo->common.extack, "Could not enable VCAP lookups"); @@ -66,8 +72,8 @@ static int sparx5_tc_matchall_destroy(struct net_device *ndev, sparx5 = port->sparx5; if (!tmo->rule && tmo->cookie) { - err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev, 0, - tmo->cookie, false); + err = vcap_enable_lookups(sparx5->vcap_ctrl, ndev, + 0, 0, tmo->cookie, false); if (err) return err; return 0; @@ -80,12 +86,6 @@ int sparx5_tc_matchall(struct net_device *ndev, struct tc_cls_matchall_offload *tmo, bool ingress) { - if (!tc_cls_can_offload_and_chain0(ndev, &tmo->common)) { - NL_SET_ERR_MSG_MOD(tmo->common.extack, - "Only chain zero is supported"); - return -EOPNOTSUPP; - } - switch (tmo->command) { case TC_CLSMATCHALL_REPLACE: return sparx5_tc_matchall_replace(ndev, tmo, ingress); diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c index a0fddd8744d3..a5572bcab8e6 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c @@ -37,11 +37,13 @@ struct vcap_rule_move { int count; /* blocksize of addresses to move */ }; -/* Stores the filter cookie that enabled the port */ +/* Stores the filter cookie and chain id that enabled the port */ struct vcap_enabled_port { struct list_head list; /* for insertion in enabled ports list */ struct net_device *ndev; /* the enabled port */ unsigned long cookie; /* filter that enabled the port */ + int src_cid; /* source chain id */ + int dst_cid; /* destination chain id */ }; void vcap_iter_set(struct vcap_stream_iter *itr, int sw_width, @@ -1930,6 +1932,21 @@ static void vcap_move_rules(struct vcap_rule_internal *ri, move->offset, move->count); } +/* Check if the chain is already used to enable a VCAP lookup for this port */ +static bool vcap_is_chain_used(struct vcap_control *vctrl, + struct net_device *ndev, int src_cid) +{ + struct vcap_enabled_port *eport; + struct vcap_admin *admin; + + list_for_each_entry(admin, &vctrl->list, list) + list_for_each_entry(eport, &admin->enabled, list) + if (eport->src_cid == src_cid && eport->ndev == ndev) + return true; + + return false; +} + /* Encode and write a validated rule to the VCAP */ int vcap_add_rule(struct vcap_rule *rule) { @@ -2595,23 +2612,33 @@ void vcap_set_tc_exterr(struct flow_cls_offload *fco, struct vcap_rule *vrule) EXPORT_SYMBOL_GPL(vcap_set_tc_exterr); /* Check if this port is already enabled for this VCAP instance */ -static bool vcap_is_enabled(struct vcap_admin *admin, struct net_device *ndev, - unsigned long cookie) +static bool vcap_is_enabled(struct vcap_control *vctrl, struct net_device *ndev, + int dst_cid) { struct vcap_enabled_port *eport; + struct vcap_admin *admin; - list_for_each_entry(eport, &admin->enabled, list) - if (eport->cookie == cookie || eport->ndev == ndev) - return true; + list_for_each_entry(admin, &vctrl->list, list) + list_for_each_entry(eport, &admin->enabled, list) + if (eport->dst_cid == dst_cid && eport->ndev == ndev) + return true; return false; } -/* Enable this port for this VCAP instance */ -static int vcap_enable(struct vcap_admin *admin, struct net_device *ndev, - unsigned long cookie) +/* Enable this port and chain id in a VCAP instance */ +static int vcap_enable(struct vcap_control *vctrl, struct net_device *ndev, + unsigned long cookie, int src_cid, int dst_cid) { struct vcap_enabled_port *eport; + struct vcap_admin *admin; + + if (src_cid >= dst_cid) + return -EFAULT; + + admin = vcap_find_admin(vctrl, dst_cid); + if (!admin) + return -ENOENT; eport = kzalloc(sizeof(*eport), GFP_KERNEL); if (!eport) @@ -2619,48 +2646,49 @@ static int vcap_enable(struct vcap_admin *admin, struct net_device *ndev, eport->ndev = ndev; eport->cookie = cookie; + eport->src_cid = src_cid; + eport->dst_cid = dst_cid; + mutex_lock(&admin->lock); list_add_tail(&eport->list, &admin->enabled); + mutex_unlock(&admin->lock); return 0; } -/* Disable this port for this VCAP instance */ -static int vcap_disable(struct vcap_admin *admin, struct net_device *ndev, +/* Disable this port and chain id for a VCAP instance */ +static int vcap_disable(struct vcap_control *vctrl, struct net_device *ndev, unsigned long cookie) { - struct vcap_enabled_port *eport; + struct vcap_enabled_port *elem, *eport = NULL; + struct vcap_admin *found = NULL, *admin; - list_for_each_entry(eport, &admin->enabled, list) { - if (eport->cookie == cookie && eport->ndev == ndev) { - list_del(&eport->list); - kfree(eport); - return 0; + list_for_each_entry(admin, &vctrl->list, list) { + list_for_each_entry(elem, &admin->enabled, list) { + if (elem->cookie == cookie && elem->ndev == ndev) { + eport = elem; + found = admin; + break; + } } + if (eport) + break; } - return -ENOENT; -} - -/* Find the VCAP instance that enabled the port using a specific filter */ -static struct vcap_admin *vcap_find_admin_by_cookie(struct vcap_control *vctrl, - unsigned long cookie) -{ - struct vcap_enabled_port *eport; - struct vcap_admin *admin; - - list_for_each_entry(admin, &vctrl->list, list) - list_for_each_entry(eport, &admin->enabled, list) - if (eport->cookie == cookie) - return admin; + if (!eport) + return -ENOENT; - return NULL; + mutex_lock(&found->lock); + list_del(&eport->list); + mutex_unlock(&found->lock); + kfree(eport); + return 0; } -/* Enable/Disable the VCAP instance lookups. Chain id 0 means disable */ +/* Enable/Disable the VCAP instance lookups */ int vcap_enable_lookups(struct vcap_control *vctrl, struct net_device *ndev, - int chain_id, unsigned long cookie, bool enable) + int src_cid, int dst_cid, unsigned long cookie, + bool enable) { - struct vcap_admin *admin; int err; err = vcap_api_check(vctrl); @@ -2670,29 +2698,23 @@ int vcap_enable_lookups(struct vcap_control *vctrl, struct net_device *ndev, if (!ndev) return -ENODEV; - if (chain_id) - admin = vcap_find_admin(vctrl, chain_id); - else - admin = vcap_find_admin_by_cookie(vctrl, cookie); - if (!admin) - return -ENOENT; - - /* first instance and first chain */ - if (admin->vinst || chain_id > admin->first_cid) + /* Source and destination must be the first chain in a lookup */ + if (src_cid % VCAP_CID_LOOKUP_SIZE) + return -EFAULT; + if (dst_cid % VCAP_CID_LOOKUP_SIZE) return -EFAULT; - if (chain_id) { - if (vcap_is_enabled(admin, ndev, cookie)) + if (enable) { + if (vcap_is_enabled(vctrl, ndev, dst_cid)) return -EADDRINUSE; - mutex_lock(&admin->lock); - vcap_enable(admin, ndev, cookie); + if (vcap_is_chain_used(vctrl, ndev, src_cid)) + return -EADDRNOTAVAIL; + err = vcap_enable(vctrl, ndev, cookie, src_cid, dst_cid); } else { - mutex_lock(&admin->lock); - vcap_disable(admin, ndev, cookie); + err = vcap_disable(vctrl, ndev, cookie); } - mutex_unlock(&admin->lock); - return 0; + return err; } EXPORT_SYMBOL_GPL(vcap_enable_lookups); diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h index 0319866f9c94..e07dc8d3c639 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h @@ -148,9 +148,10 @@ struct vcap_counter { bool sticky; }; -/* Enable/Disable the VCAP instance lookups. Chain id 0 means disable */ +/* Enable/Disable the VCAP instance lookups */ int vcap_enable_lookups(struct vcap_control *vctrl, struct net_device *ndev, - int chain_id, unsigned long cookie, bool enable); + int from_cid, int to_cid, unsigned long cookie, + bool enable); /* VCAP rule operations */ /* Allocate a rule and fill in the basic information */