From patchwork Tue Oct 4 15:20:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Schultz X-Patchwork-Id: 12998514 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CADBC433F5 for ; Tue, 4 Oct 2022 15:20:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229509AbiJDPUx (ORCPT ); Tue, 4 Oct 2022 11:20:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229446AbiJDPUv (ORCPT ); Tue, 4 Oct 2022 11:20:51 -0400 Received: from mailout-taastrup.gigahost.dk (mailout-taastrup.gigahost.dk [46.183.139.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B34A113F21; Tue, 4 Oct 2022 08:20:48 -0700 (PDT) Received: from mailout.gigahost.dk (mailout.gigahost.dk [89.186.169.112]) by mailout-taastrup.gigahost.dk (Postfix) with ESMTP id 274A918847D5; Tue, 4 Oct 2022 15:20:46 +0000 (UTC) Received: from smtp.gigahost.dk (smtp.gigahost.dk [89.186.169.109]) by mailout.gigahost.dk (Postfix) with ESMTP id 1C11425002BC; Tue, 4 Oct 2022 15:20:46 +0000 (UTC) Received: by smtp.gigahost.dk (Postfix, from userid 1000) id 1361F9EC000E; Tue, 4 Oct 2022 15:20:46 +0000 (UTC) X-Screener-Id: 413d8c6ce5bf6eab4824d0abaab02863e8e3f662 Received: from fujitsu.vestervang (2-104-116-184-cable.dk.customer.tdc.net [2.104.116.184]) by smtp.gigahost.dk (Postfix) with ESMTPSA id 2858B9EC000C; Tue, 4 Oct 2022 15:20:45 +0000 (UTC) From: Hans Schultz To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, Hans Schultz , Florian Fainelli , Andrew Lunn , Vivien Didelot , Vladimir Oltean , Eric Dumazet , Paolo Abeni , Kurt Kanzenbach , Hauke Mehrtens , Woojung Huh , UNGLinuxDriver@microchip.com, Sean Wang , Landen Chao , DENG Qingfang , Matthias Brugger , Claudiu Manoil , Alexandre Belloni , Jiri Pirko , Ivan Vecera , Roopa Prabhu , Nikolay Aleksandrov , Shuah Khan , Russell King , Christian Marangi , Daniel Borkmann , Yuwei Wang , Petr Machata , Ido Schimmel , Florent Fourcot , Hans Schultz , Joachim Wiberg , Amit Cohen , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, bridge@lists.linux-foundation.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 iproute2-next 1/4] include: uapi: MacAuth and Blackhole feature header changes Date: Tue, 4 Oct 2022 17:20:33 +0200 Message-Id: <20221004152036.7848-1-netdev@kapio-technology.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Organization: Westermo Network Technologies AB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Signed-off-by: Hans Schultz --- include/uapi/linux/if_link.h | 1 + include/uapi/linux/neighbour.h | 11 ++++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 7494cffb..58a002de 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -559,6 +559,7 @@ enum { IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT, IFLA_BRPORT_MCAST_EHT_HOSTS_CNT, IFLA_BRPORT_LOCKED, + IFLA_BRPORT_MAB, __IFLA_BRPORT_MAX }; #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1) diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h index a998bf76..cc7d540e 100644 --- a/include/uapi/linux/neighbour.h +++ b/include/uapi/linux/neighbour.h @@ -52,7 +52,9 @@ enum { #define NTF_STICKY (1 << 6) #define NTF_ROUTER (1 << 7) /* Extended flags under NDA_FLAGS_EXT: */ -#define NTF_EXT_MANAGED (1 << 0) +#define NTF_EXT_MANAGED (1 << 0) +#define NTF_EXT_LOCKED (1 << 1) +#define NTF_EXT_BLACKHOLE (1 << 2) /* * Neighbor Cache Entry States. @@ -86,6 +88,13 @@ enum { * NTF_EXT_MANAGED flagged neigbor entries are managed by the kernel on behalf * of a user space control plane, and automatically refreshed so that (if * possible) they remain in NUD_REACHABLE state. + * + * NTF_EXT_LOCKED flagged FDB entries are placeholder entries used with the + * locked port feature, that ensures that an entry exists while at the same + * time dropping packets on ingress with src MAC and VID matching the entry. + * + * NTF_EXT_BLACKHOLE flagged FDB entries ensure that no forwarding is allowed + * from any port to the destination MAC, VID pair associated with it. */ struct nda_cacheinfo { From patchwork Tue Oct 4 15:20:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Schultz X-Patchwork-Id: 12998515 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DB78C433F5 for ; Tue, 4 Oct 2022 15:20:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229469AbiJDPUy (ORCPT ); Tue, 4 Oct 2022 11:20:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229463AbiJDPUv (ORCPT ); Tue, 4 Oct 2022 11:20:51 -0400 Received: from mailout-taastrup.gigahost.dk (mailout-taastrup.gigahost.dk [46.183.139.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A606A5C978; Tue, 4 Oct 2022 08:20:49 -0700 (PDT) Received: from mailout.gigahost.dk (mailout.gigahost.dk [89.186.169.112]) by mailout-taastrup.gigahost.dk (Postfix) with ESMTP id 3B7B11884B7E; Tue, 4 Oct 2022 15:20:48 +0000 (UTC) Received: from smtp.gigahost.dk (smtp.gigahost.dk [89.186.169.109]) by mailout.gigahost.dk (Postfix) with ESMTP id 094D625001FA; Tue, 4 Oct 2022 15:20:48 +0000 (UTC) Received: by smtp.gigahost.dk (Postfix, from userid 1000) id D49EE9EC000E; Tue, 4 Oct 2022 15:20:47 +0000 (UTC) X-Screener-Id: 413d8c6ce5bf6eab4824d0abaab02863e8e3f662 Received: from fujitsu.vestervang (2-104-116-184-cable.dk.customer.tdc.net [2.104.116.184]) by smtp.gigahost.dk (Postfix) with ESMTPSA id 021779120FED; Tue, 4 Oct 2022 15:20:46 +0000 (UTC) From: Hans Schultz To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, Hans Schultz , Florian Fainelli , Andrew Lunn , Vivien Didelot , Vladimir Oltean , Eric Dumazet , Paolo Abeni , Kurt Kanzenbach , Hauke Mehrtens , Woojung Huh , UNGLinuxDriver@microchip.com, Sean Wang , Landen Chao , DENG Qingfang , Matthias Brugger , Claudiu Manoil , Alexandre Belloni , Jiri Pirko , Ivan Vecera , Roopa Prabhu , Nikolay Aleksandrov , Shuah Khan , Russell King , Christian Marangi , Daniel Borkmann , Yuwei Wang , Petr Machata , Ido Schimmel , Florent Fourcot , Hans Schultz , Joachim Wiberg , Amit Cohen , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, bridge@lists.linux-foundation.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 iproute2-next 2/4] bridge: fdb: show locked FDB entries flag in output Date: Tue, 4 Oct 2022 17:20:34 +0200 Message-Id: <20221004152036.7848-2-netdev@kapio-technology.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221004152036.7848-1-netdev@kapio-technology.com> References: <20221004152036.7848-1-netdev@kapio-technology.com> MIME-Version: 1.0 Organization: Westermo Network Technologies AB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Signed-off-by: Hans Schultz --- bridge/fdb.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/bridge/fdb.c b/bridge/fdb.c index 5f71bde0..f1f0a5bb 100644 --- a/bridge/fdb.c +++ b/bridge/fdb.c @@ -93,7 +93,7 @@ static int state_a2n(unsigned int *s, const char *arg) return 0; } -static void fdb_print_flags(FILE *fp, unsigned int flags) +static void fdb_print_flags(FILE *fp, unsigned int flags, __u8 ext_flags) { open_json_array(PRINT_JSON, is_json_context() ? "flags" : ""); @@ -116,6 +116,9 @@ static void fdb_print_flags(FILE *fp, unsigned int flags) if (flags & NTF_STICKY) print_string(PRINT_ANY, NULL, "%s ", "sticky"); + if (ext_flags & NTF_EXT_LOCKED) + print_string(PRINT_ANY, NULL, "%s ", "locked"); + close_json_array(PRINT_JSON, NULL); } @@ -144,6 +147,7 @@ int print_fdb(struct nlmsghdr *n, void *arg) struct ndmsg *r = NLMSG_DATA(n); int len = n->nlmsg_len; struct rtattr *tb[NDA_MAX+1]; + __u32 ext_flags = 0; __u16 vid = 0; if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) { @@ -170,6 +174,9 @@ int print_fdb(struct nlmsghdr *n, void *arg) parse_rtattr(tb, NDA_MAX, NDA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); + if (tb[NDA_FLAGS_EXT]) + ext_flags = rta_getattr_u32(tb[NDA_FLAGS_EXT]); + if (tb[NDA_VLAN]) vid = rta_getattr_u16(tb[NDA_VLAN]); @@ -266,7 +273,7 @@ int print_fdb(struct nlmsghdr *n, void *arg) if (show_stats && tb[NDA_CACHEINFO]) fdb_print_stats(fp, RTA_DATA(tb[NDA_CACHEINFO])); - fdb_print_flags(fp, r->ndm_flags); + fdb_print_flags(fp, r->ndm_flags, ext_flags); if (tb[NDA_MASTER]) From patchwork Tue Oct 4 15:20:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Schultz X-Patchwork-Id: 12998516 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C51BCC4332F for ; Tue, 4 Oct 2022 15:20:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229446AbiJDPUz (ORCPT ); Tue, 4 Oct 2022 11:20:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229535AbiJDPUx (ORCPT ); Tue, 4 Oct 2022 11:20:53 -0400 Received: from mailout-taastrup.gigahost.dk (mailout-taastrup.gigahost.dk [46.183.139.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A5A944E85D; Tue, 4 Oct 2022 08:20:51 -0700 (PDT) Received: from mailout.gigahost.dk (mailout.gigahost.dk [89.186.169.112]) by mailout-taastrup.gigahost.dk (Postfix) with ESMTP id 474431884B97; Tue, 4 Oct 2022 15:20:50 +0000 (UTC) Received: from smtp.gigahost.dk (smtp.gigahost.dk [89.186.169.109]) by mailout.gigahost.dk (Postfix) with ESMTP id 3E6D925001FA; Tue, 4 Oct 2022 15:20:50 +0000 (UTC) Received: by smtp.gigahost.dk (Postfix, from userid 1000) id 282149EC000D; Tue, 4 Oct 2022 15:20:50 +0000 (UTC) X-Screener-Id: 413d8c6ce5bf6eab4824d0abaab02863e8e3f662 Received: from fujitsu.vestervang (2-104-116-184-cable.dk.customer.tdc.net [2.104.116.184]) by smtp.gigahost.dk (Postfix) with ESMTPSA id 48EB39120FED; Tue, 4 Oct 2022 15:20:49 +0000 (UTC) From: Hans Schultz To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, Hans Schultz , Florian Fainelli , Andrew Lunn , Vivien Didelot , Vladimir Oltean , Eric Dumazet , Paolo Abeni , Kurt Kanzenbach , Hauke Mehrtens , Woojung Huh , UNGLinuxDriver@microchip.com, Sean Wang , Landen Chao , DENG Qingfang , Matthias Brugger , Claudiu Manoil , Alexandre Belloni , Jiri Pirko , Ivan Vecera , Roopa Prabhu , Nikolay Aleksandrov , Shuah Khan , Russell King , Christian Marangi , Daniel Borkmann , Yuwei Wang , Petr Machata , Ido Schimmel , Florent Fourcot , Hans Schultz , Joachim Wiberg , Amit Cohen , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, bridge@lists.linux-foundation.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 iproute2-next 3/4] bridge: link: enable MacAuth/MAB feature Date: Tue, 4 Oct 2022 17:20:35 +0200 Message-Id: <20221004152036.7848-3-netdev@kapio-technology.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221004152036.7848-1-netdev@kapio-technology.com> References: <20221004152036.7848-1-netdev@kapio-technology.com> MIME-Version: 1.0 Organization: Westermo Network Technologies AB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The MAB feature can be enabled on a locked port with the command: bridge link set dev mab on Examples of output when the feature is enabled: $ bridge -d link show dev eth1 1: eth1: mtu 1500 master testbr state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on mcast_flood on bcast_flood on mcast_router 1 mcast_to_unicast off neigh_suppress off vlan_tunnel off isolated off locked on mab on $ bridge -d -j -p link show dev eth1 [ { "ifindex": 1, "ifname": "eth1", "flags": [ "BROADCAST","MULTICAST","UP","LOWER_UP" ], "mtu": 1500, "master": "br0", "state": "forwarding", "priority": 32, "cost": 2, "hairpin": false, "guard": false, "root_block": false, "fastleave": false, "learning": true, "flood": true, "mcast_flood": true, "bcast_flood": true, "mcast_router": 1, "mcast_to_unicast": false, "neigh_suppress": false, "vlan_tunnel": false, "isolated": false, "locked": true, "mab": true } ] Signed-off-by: Hans Schultz --- bridge/link.c | 13 +++++++++++++ ip/iplink_bridge_slave.c | 9 +++++++++ man/man8/bridge.8 | 12 ++++++++++++ man/man8/ip-link.8.in | 14 ++++++++++++++ 4 files changed, 48 insertions(+) diff --git a/bridge/link.c b/bridge/link.c index 3810fa04..25a45860 100644 --- a/bridge/link.c +++ b/bridge/link.c @@ -184,6 +184,9 @@ static void print_protinfo(FILE *fp, struct rtattr *attr) if (prtb[IFLA_BRPORT_LOCKED]) print_on_off(PRINT_ANY, "locked", "locked %s ", rta_getattr_u8(prtb[IFLA_BRPORT_LOCKED])); + if (prtb[IFLA_BRPORT_MAB]) + print_on_off(PRINT_ANY, "mab", "mab %s ", + rta_getattr_u8(prtb[IFLA_BRPORT_MAB])); } else print_stp_state(rta_getattr_u8(attr)); } @@ -281,6 +284,7 @@ static void usage(void) " [ vlan_tunnel {on | off} ]\n" " [ isolated {on | off} ]\n" " [ locked {on | off} ]\n" + " [ mab {on | off} ]\n" " [ hwmode {vepa | veb} ]\n" " [ backup_port DEVICE ] [ nobackup_port ]\n" " [ self ] [ master ]\n" @@ -312,6 +316,7 @@ static int brlink_modify(int argc, char **argv) __s8 bcast_flood = -1; __s8 mcast_to_unicast = -1; __s8 locked = -1; + __s8 macauth = -1; __s8 isolated = -1; __s8 hairpin = -1; __s8 bpdu_guard = -1; @@ -437,6 +442,11 @@ static int brlink_modify(int argc, char **argv) locked = parse_on_off("locked", *argv, &ret); if (ret) return ret; + } else if (strcmp(*argv, "mab") == 0) { + NEXT_ARG(); + macauth = parse_on_off("mab", *argv, &ret); + if (ret) + return ret; } else if (strcmp(*argv, "backup_port") == 0) { NEXT_ARG(); backup_port_idx = ll_name_to_index(*argv); @@ -520,6 +530,9 @@ static int brlink_modify(int argc, char **argv) if (locked >= 0) addattr8(&req.n, sizeof(req), IFLA_BRPORT_LOCKED, locked); + if (macauth >= 0) + addattr8(&req.n, sizeof(req), IFLA_BRPORT_MAB, macauth); + if (backup_port_idx != -1) addattr32(&req.n, sizeof(req), IFLA_BRPORT_BACKUP_PORT, backup_port_idx); diff --git a/ip/iplink_bridge_slave.c b/ip/iplink_bridge_slave.c index 98d17213..e5262bdb 100644 --- a/ip/iplink_bridge_slave.c +++ b/ip/iplink_bridge_slave.c @@ -44,6 +44,7 @@ static void print_explain(FILE *f) " [ vlan_tunnel {on | off} ]\n" " [ isolated {on | off} ]\n" " [ locked {on | off} ]\n" + " [ mab {on | off} ]\n" " [ backup_port DEVICE ] [ nobackup_port ]\n" ); } @@ -288,6 +289,10 @@ static void bridge_slave_print_opt(struct link_util *lu, FILE *f, print_on_off(PRINT_ANY, "locked", "locked %s ", rta_getattr_u8(tb[IFLA_BRPORT_LOCKED])); + if (tb[IFLA_BRPORT_MAB]) + print_on_off(PRINT_ANY, "mab", "mab %s ", + rta_getattr_u8(tb[IFLA_BRPORT_MAB])); + if (tb[IFLA_BRPORT_BACKUP_PORT]) { int backup_p = rta_getattr_u32(tb[IFLA_BRPORT_BACKUP_PORT]); @@ -411,6 +416,10 @@ static int bridge_slave_parse_opt(struct link_util *lu, int argc, char **argv, NEXT_ARG(); bridge_slave_parse_on_off("locked", *argv, n, IFLA_BRPORT_LOCKED); + } else if (matches(*argv, "mab") == 0) { + NEXT_ARG(); + bridge_slave_parse_on_off("mab", *argv, n, + IFLA_BRPORT_MAB); } else if (matches(*argv, "backup_port") == 0) { int ifindex; diff --git a/man/man8/bridge.8 b/man/man8/bridge.8 index d4df772e..f4f1d807 100644 --- a/man/man8/bridge.8 +++ b/man/man8/bridge.8 @@ -54,6 +54,7 @@ bridge \- show / manipulate bridge addresses and devices .BR vlan_tunnel " { " on " | " off " } ] [ " .BR isolated " { " on " | " off " } ] [ " .BR locked " { " on " | " off " } ] [ " +.BR mab " { " on " | " off " } ] [ " .B backup_port .IR DEVICE " ] [" .BR nobackup_port " ] [ " @@ -580,6 +581,17 @@ The common use is that hosts are allowed access through authentication with the IEEE 802.1X protocol or based on whitelists or like setups. By default this flag is off. +.TP +.BR "mab on " or " mab off " +Enables or disables the MAB/MacAuth feature. This feature can only be +enabled on a port that is in locked mode, and when enabled it extends the +locked port feature so that a host can get access through a locked +port based on acceptlists, thus it is a much simpler procedure for a +device to become authorized than f.ex. the 802.1X protocol, and is used +for devices that are not capable of password or crypto based authorization +methods. +The feature triggers a 'locked' FDB entry when a host tries to communicate +through the MAB enabled port. .TP .BI backup_port " DEVICE" diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in index fc9d62fc..5f31f80a 100644 --- a/man/man8/ip-link.8.in +++ b/man/man8/ip-link.8.in @@ -2454,6 +2454,9 @@ the following additional arguments are supported: .BR isolated " { " on " | " off " }" ] [ .BR locked " { " on " | " off " }" +] [ +.BR mab " { " on " | " off " }" +] [ .BR backup_port " DEVICE" ] [ .BR nobackup_port " ]" @@ -2560,6 +2563,17 @@ default this flag is off. behind the port cannot communicate through the port unless a FDB entry representing the host is in the FDB. By default this flag is off. +.BR mab " { " on " | " off " }" +- Enables or disables the MAB/MacAuth feature. This feature can only be +enabled on a port that is in locked mode, and when enabled it extends the +locked port feature so that a host can get access through a locked +port based on acceptlists, thus it is a much simpler procedure for a +device to become authorized than f.ex. the 802.1X protocol, and is used +for devices that are not capable of password or crypto based authorization +methods. +The feature triggers a 'locked' FDB entry when a host tries to communicate +through the MAB enabled port. + .BI backup_port " DEVICE" - if the port loses carrier all traffic will be redirected to the configured backup port From patchwork Tue Oct 4 15:20:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Schultz X-Patchwork-Id: 12998517 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 535E2C4332F for ; Tue, 4 Oct 2022 15:21:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229747AbiJDPVA (ORCPT ); Tue, 4 Oct 2022 11:21:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229710AbiJDPUz (ORCPT ); Tue, 4 Oct 2022 11:20:55 -0400 Received: from mailout-taastrup.gigahost.dk (mailout-taastrup.gigahost.dk [46.183.139.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61B575FAD0; Tue, 4 Oct 2022 08:20:54 -0700 (PDT) Received: from mailout.gigahost.dk (mailout.gigahost.dk [89.186.169.112]) by mailout-taastrup.gigahost.dk (Postfix) with ESMTP id C91BD1884BAC; Tue, 4 Oct 2022 15:20:52 +0000 (UTC) Received: from smtp.gigahost.dk (smtp.gigahost.dk [89.186.169.109]) by mailout.gigahost.dk (Postfix) with ESMTP id AC91125001FA; Tue, 4 Oct 2022 15:20:52 +0000 (UTC) Received: by smtp.gigahost.dk (Postfix, from userid 1000) id 8B1649EC000E; Tue, 4 Oct 2022 15:20:52 +0000 (UTC) X-Screener-Id: 413d8c6ce5bf6eab4824d0abaab02863e8e3f662 Received: from fujitsu.vestervang (2-104-116-184-cable.dk.customer.tdc.net [2.104.116.184]) by smtp.gigahost.dk (Postfix) with ESMTPSA id B5CFB9EC000A; Tue, 4 Oct 2022 15:20:51 +0000 (UTC) From: Hans Schultz To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, Hans Schultz , Florian Fainelli , Andrew Lunn , Vivien Didelot , Vladimir Oltean , Eric Dumazet , Paolo Abeni , Kurt Kanzenbach , Hauke Mehrtens , Woojung Huh , UNGLinuxDriver@microchip.com, Sean Wang , Landen Chao , DENG Qingfang , Matthias Brugger , Claudiu Manoil , Alexandre Belloni , Jiri Pirko , Ivan Vecera , Roopa Prabhu , Nikolay Aleksandrov , Shuah Khan , Russell King , Christian Marangi , Daniel Borkmann , Yuwei Wang , Petr Machata , Ido Schimmel , Florent Fourcot , Hans Schultz , Joachim Wiberg , Amit Cohen , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, bridge@lists.linux-foundation.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 iproute2-next 4/4] bridge: fdb: enable FDB blackhole feature Date: Tue, 4 Oct 2022 17:20:36 +0200 Message-Id: <20221004152036.7848-4-netdev@kapio-technology.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221004152036.7848-1-netdev@kapio-technology.com> References: <20221004152036.7848-1-netdev@kapio-technology.com> MIME-Version: 1.0 Organization: Westermo Network Technologies AB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Block traffic to a specific host with the command: bridge fdb add vlan dev br0 blackhole Blackhole FDB entries can be added, deleted and replaced with ordinary FDB entries. Example with output: $ bridge fdb add 10:10:10:10:10:10 dev br0 blackhole $ bridge -d fdb show dev br0 10:10:10:10:10:10 vlan 1 blackhole master br0 permanent 10:10:10:10:10:10 blackhole master br0 permanent $ bridge -d -j -p fdb show dev br0 [ { "mac": "10:10:10:10:10:10", "vlan": 1, "flags": [ "blackhole" ], "master": "br0", "state": "permanent" },{ "mac": "10:10:10:10:10:10", "flags": [ "blackhole" ], "master": "br0", "state": "permanent" } ] Signed-off-by: Hans Schultz --- bridge/fdb.c | 13 ++++++++++++- man/man8/bridge.8 | 12 ++++++++++++ 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/bridge/fdb.c b/bridge/fdb.c index f1f0a5bb..1c8c50a8 100644 --- a/bridge/fdb.c +++ b/bridge/fdb.c @@ -38,7 +38,7 @@ static void usage(void) fprintf(stderr, "Usage: bridge fdb { add | append | del | replace } ADDR dev DEV\n" " [ self ] [ master ] [ use ] [ router ] [ extern_learn ]\n" - " [ sticky ] [ local | static | dynamic ] [ vlan VID ]\n" + " [ sticky ] [ local | static | dynamic ] [ blackhole ] [ vlan VID ]\n" " { [ dst IPADDR ] [ port PORT] [ vni VNI ] | [ nhid NHID ] }\n" " [ via DEV ] [ src_vni VNI ]\n" " bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ]\n" @@ -116,6 +116,9 @@ static void fdb_print_flags(FILE *fp, unsigned int flags, __u8 ext_flags) if (flags & NTF_STICKY) print_string(PRINT_ANY, NULL, "%s ", "sticky"); + if (ext_flags & NTF_EXT_BLACKHOLE) + print_string(PRINT_ANY, NULL, "%s ", "blackhole"); + if (ext_flags & NTF_EXT_LOCKED) print_string(PRINT_ANY, NULL, "%s ", "locked"); @@ -421,6 +424,7 @@ static int fdb_modify(int cmd, int flags, int argc, char **argv) char *endptr; short vid = -1; __u32 nhid = 0; + __u32 ext_flags = 0; while (argc > 0) { if (strcmp(*argv, "dev") == 0) { @@ -492,6 +496,8 @@ static int fdb_modify(int cmd, int flags, int argc, char **argv) req.ndm.ndm_flags |= NTF_EXT_LEARNED; } else if (matches(*argv, "sticky") == 0) { req.ndm.ndm_flags |= NTF_STICKY; + } else if (matches(*argv, "blackhole") == 0) { + ext_flags |= NTF_EXT_BLACKHOLE; } else { if (strcmp(*argv, "to") == 0) NEXT_ARG(); @@ -534,6 +540,11 @@ static int fdb_modify(int cmd, int flags, int argc, char **argv) if (dst_ok) addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen); + if (ext_flags && + addattr_l(&req.n, sizeof(req), NDA_FLAGS_EXT, &ext_flags, + sizeof(ext_flags)) < 0) + return -1; + if (vid >= 0) addattr16(&req.n, sizeof(req), NDA_VLAN, vid); if (nhid > 0) diff --git a/man/man8/bridge.8 b/man/man8/bridge.8 index f4f1d807..0119a2a9 100644 --- a/man/man8/bridge.8 +++ b/man/man8/bridge.8 @@ -85,6 +85,13 @@ bridge \- show / manipulate bridge addresses and devices .B nhid .IR NHID " } " +.ti -8 +.BR "bridge fdb" " { " add " | " del " } " +.I LLADR +.B dev +.IR BRDEV " [ " +.BR self " ] [ " local " ] [ " blackhole " ] " + .ti -8 .BR "bridge fdb" " [ [ " show " ] [ " .B br @@ -701,6 +708,11 @@ controller learnt dynamic entry. Kernel will not age such an entry. - this entry will not change its port due to learning. .sp +.B blackhole +- this entry will silently discard all matching packets. The entry must +be added as a local permanent entry. +.sp + .in -8 The next command line parameters apply only when the specified device