From patchwork Wed Sep 28 17:48:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Schultz X-Patchwork-Id: 12992678 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C2642C04A95 for ; Wed, 28 Sep 2022 18:19:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=+IAfrZADjIJR2JJkPuPa86o08nbEP19/8yp/5opcxeo=; b=Da1A7XMLnFiz7u FkM7OayGcaFeW2pQW8BtRByrX3jcQk/6m2NGxlEcvDadg8CQskzcXp9mOPaWgh3szLMGBsjRj3MuB ELi4WNwykA+5K+Nf2F/OuUql3nnA2e6ZE6LNBizhPFCOH2EJtCiHxzLHTqVjl4iF1euIHBRNeg/xg 9V/uxe89UhOCpYN/IU3fio5OjgtMXmVzVDcdmf+UDNsz+g3gRN4q1gHsesofDSwEAjm5lsSaZKtOr /4CFjzOCtVTR5Rxl9qGEfiUOODgbqRfw5gi2iXgjqy+NR6aaUiP9EL2I3Xj56noLCDowjnxDb2/gf jBp6Fg0GA9BPNtD4poEQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1odbdL-00HYit-6J; Wed, 28 Sep 2022 18:18:11 +0000 Received: from mailout-taastrup.gigahost.dk ([46.183.139.199]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1odbb6-00HXXU-Kl; Wed, 28 Sep 2022 18:15:54 +0000 Received: from mailout.gigahost.dk (mailout.gigahost.dk [89.186.169.112]) by mailout-taastrup.gigahost.dk (Postfix) with ESMTP id ADE2A1884BC7; Wed, 28 Sep 2022 18:15:41 +0000 (UTC) Received: from smtp.gigahost.dk (smtp.gigahost.dk [89.186.169.109]) by mailout.gigahost.dk (Postfix) with ESMTP id 962D62500709; Wed, 28 Sep 2022 18:15:41 +0000 (UTC) Received: by smtp.gigahost.dk (Postfix, from userid 0) id 7613E9EC000D; Wed, 28 Sep 2022 18:15:41 +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 C4F429120FED; Wed, 28 Sep 2022 17:52:03 +0000 (UTC) From: Hans Schultz To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, "Hans J. 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 v6 net-next 8/9] net: dsa: mv88e6xxx: add blackhole ATU entries Date: Wed, 28 Sep 2022 19:48:54 +0200 Message-Id: <20220928174854.117101-1-netdev@kapio-technology.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220928_111552_981732_ECEB4247 X-CRM114-Status: GOOD ( 14.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Hans J. Schultz" Blackhole FDB entries can now be added, deleted or replaced in the driver ATU. Signed-off-by: Hans J. Schultz --- drivers/net/dsa/mv88e6xxx/chip.c | 78 ++++++++++++++++++++++++++++++-- 1 file changed, 74 insertions(+), 4 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 71843fe87f77..a17f30e5d4a6 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -2735,6 +2735,72 @@ static int mv88e6xxx_vlan_msti_set(struct dsa_switch *ds, return err; } +struct mv88e6xxx_vid_search_ctx { + u16 vid_search; + u16 fid_found; +}; + +static int mv88e6xxx_find_fid_on_matching_vid(struct mv88e6xxx_chip *chip, + const struct mv88e6xxx_vtu_entry *entry, + void *priv) +{ + struct mv88e6xxx_vid_search_ctx *ctx = priv; + + if (ctx->vid_search == entry->vid) { + ctx->fid_found = entry->fid; + return 1; + } + + return 0; +} + +static int mv88e6xxx_blackhole_fdb_loadpurge(struct dsa_switch *ds, + const unsigned char *addr, u16 vid, u8 state) +{ + struct mv88e6xxx_chip *chip = ds->priv; + struct mv88e6xxx_vid_search_ctx ctx; + struct mv88e6xxx_atu_entry entry; + u16 fid = 0; + int err; + + ether_addr_copy(entry.mac, addr); + entry.portvec = MV88E6XXX_G1_ATU_DATA_PORT_VECTOR_NO_EGRESS; + entry.state = state; + entry.trunk = false; + + ctx.vid_search = vid; + mv88e6xxx_reg_lock(chip); + err = mv88e6xxx_vtu_walk(chip, mv88e6xxx_find_fid_on_matching_vid, &ctx); + mv88e6xxx_reg_unlock(chip); + if (err < 0) + return err; + if (err == 1) + fid = ctx.fid_found; + else + return -ENODATA; + + if (!fid) + return -ENODATA; + + mv88e6xxx_reg_lock(chip); + err = mv88e6xxx_g1_atu_loadpurge(chip, fid, &entry); + mv88e6xxx_reg_unlock(chip); + + return err; +} + +int mv88e6xxx_blackhole_fdb_add(struct dsa_switch *ds, const unsigned char *addr, u16 vid) +{ + return mv88e6xxx_blackhole_fdb_loadpurge(ds, addr, vid, + MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC); +} + +int mv88e6xxx_blackhole_fdb_del(struct dsa_switch *ds, const unsigned char *addr, u16 vid) +{ + return mv88e6xxx_blackhole_fdb_loadpurge(ds, addr, vid, + MV88E6XXX_G1_ATU_DATA_STATE_UC_UNUSED); +} + static int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid, u16 fdb_flags, struct dsa_db db) @@ -2742,9 +2808,12 @@ static int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port, struct mv88e6xxx_chip *chip = ds->priv; int err; - /* Ignore entries with flags set */ - if (fdb_flags) + if (fdb_flags & DSA_FDB_FLAG_LOCKED) return 0; + if (fdb_flags & DSA_FDB_FLAG_BLACKHOLE) { + mv88e6xxx_blackhole_fdb_del(ds, addr, vid); + return mv88e6xxx_blackhole_fdb_add(ds, addr, vid); + } if (mv88e6xxx_port_is_locked(chip, port)) mv88e6xxx_atu_locked_entry_find_purge(ds, port, addr, vid); @@ -2765,9 +2834,10 @@ static int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port, bool locked_found = false; int err = 0; - /* Ignore entries with flags set */ - if (fdb_flags) + if (fdb_flags & DSA_FDB_FLAG_LOCKED) return 0; + if (fdb_flags & DSA_FDB_FLAG_BLACKHOLE) + return mv88e6xxx_blackhole_fdb_del(ds, addr, vid); if (mv88e6xxx_port_is_locked(chip, port)) locked_found = mv88e6xxx_atu_locked_entry_find_purge(ds, port, addr, vid);