From patchwork Thu Mar 11 17:53:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kurt Kanzenbach X-Patchwork-Id: 12132445 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 201FEC4332D for ; Thu, 11 Mar 2021 18:23:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E880964FEC for ; Thu, 11 Mar 2021 18:23:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229974AbhCKSWf (ORCPT ); Thu, 11 Mar 2021 13:22:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229705AbhCKSWD (ORCPT ); Thu, 11 Mar 2021 13:22:03 -0500 Received: from wp003.webpack.hosteurope.de (wp003.webpack.hosteurope.de [IPv6:2a01:488:42:1000:50ed:840a::]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20C59C061760 for ; Thu, 11 Mar 2021 10:22:02 -0800 (PST) Received: from p548da928.dip0.t-ipconnect.de ([84.141.169.40] helo=kmk0.Speedport_W_724V_09011603_06_007); authenticated by wp003.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) id 1lKPVd-0008Vo-NV; Thu, 11 Mar 2021 18:54:05 +0100 From: Kurt Kanzenbach To: Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean Cc: "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, Kurt Kanzenbach Subject: [PATCH net-next 6/6] net: dsa: hellcreek: Add devlink FDB region Date: Thu, 11 Mar 2021 18:53:44 +0100 Message-Id: <20210311175344.3084-7-kurt@kmk-computers.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210311175344.3084-1-kurt@kmk-computers.de> References: <20210311175344.3084-1-kurt@kmk-computers.de> MIME-Version: 1.0 X-bounce-key: webpack.hosteurope.de;kurt@kmk-computers.de;1615486922;88662bff; X-HE-SMSGID: 1lKPVd-0008Vo-NV Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Allow to dump the FDB table via devlink. This is a useful debugging feature. Signed-off-by: Kurt Kanzenbach Reviewed-by: Andrew Lunn --- drivers/net/dsa/hirschmann/hellcreek.c | 63 ++++++++++++++++++++++++++ drivers/net/dsa/hirschmann/hellcreek.h | 1 + 2 files changed, 64 insertions(+) diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c index 6edb6b4c9041..c1f873a4fbc4 100644 --- a/drivers/net/dsa/hirschmann/hellcreek.c +++ b/drivers/net/dsa/hirschmann/hellcreek.c @@ -1175,19 +1175,64 @@ static int hellcreek_devlink_region_vlan_snapshot(struct devlink *dl, return 0; } +static int hellcreek_devlink_region_fdb_snapshot(struct devlink *dl, + const struct devlink_region_ops *ops, + struct netlink_ext_ack *extack, + u8 **data) +{ + struct dsa_switch *ds = dsa_devlink_to_ds(dl); + struct hellcreek_fdb_entry *table, *entry; + struct hellcreek *hellcreek = ds->priv; + size_t i; + + table = kcalloc(hellcreek->fdb_entries, sizeof(*entry), GFP_KERNEL); + if (!table) + return -ENOMEM; + + entry = table; + + mutex_lock(&hellcreek->reg_lock); + + /* Start table read */ + hellcreek_read(hellcreek, HR_FDBMAX); + hellcreek_write(hellcreek, 0x00, HR_FDBMAX); + + for (i = 0; i < hellcreek->fdb_entries; ++i, ++entry) { + /* Read current entry */ + hellcreek_populate_fdb_entry(hellcreek, entry, i); + + /* Advance read pointer */ + hellcreek_write(hellcreek, 0x00, HR_FDBRDH); + } + + mutex_unlock(&hellcreek->reg_lock); + + *data = (u8 *)table; + + return 0; +} + static struct devlink_region_ops hellcreek_region_vlan_ops = { .name = "vlan", .snapshot = hellcreek_devlink_region_vlan_snapshot, .destructor = kfree, }; +static struct devlink_region_ops hellcreek_region_fdb_ops = { + .name = "fdb", + .snapshot = hellcreek_devlink_region_fdb_snapshot, + .destructor = kfree, +}; + static int hellcreek_setup_devlink_regions(struct dsa_switch *ds) { struct hellcreek *hellcreek = ds->priv; struct devlink_region_ops *ops; struct devlink_region *region; u64 size; + int ret; + /* VLAN table */ size = VLAN_N_VID * sizeof(struct hellcreek_devlink_vlan_entry); ops = &hellcreek_region_vlan_ops; @@ -1197,13 +1242,31 @@ static int hellcreek_setup_devlink_regions(struct dsa_switch *ds) hellcreek->vlan_region = region; + /* FDB table */ + size = hellcreek->fdb_entries * sizeof(struct hellcreek_fdb_entry); + ops = &hellcreek_region_fdb_ops; + + region = dsa_devlink_region_create(ds, ops, 1, size); + if (IS_ERR(region)) { + ret = PTR_ERR(region); + goto err_fdb; + } + + hellcreek->fdb_region = region; + return 0; + +err_fdb: + dsa_devlink_region_destroy(hellcreek->vlan_region); + + return ret; } static void hellcreek_teardown_devlink_regions(struct dsa_switch *ds) { struct hellcreek *hellcreek = ds->priv; + dsa_devlink_region_destroy(hellcreek->fdb_region); dsa_devlink_region_destroy(hellcreek->vlan_region); } diff --git a/drivers/net/dsa/hirschmann/hellcreek.h b/drivers/net/dsa/hirschmann/hellcreek.h index c0f17a2f13a0..17445e429f1f 100644 --- a/drivers/net/dsa/hirschmann/hellcreek.h +++ b/drivers/net/dsa/hirschmann/hellcreek.h @@ -279,6 +279,7 @@ struct hellcreek { struct mutex vlan_lock; /* VLAN bitmaps lock */ struct mutex ptp_lock; /* PTP IP register lock */ struct devlink_region *vlan_region; + struct devlink_region *fdb_region; void __iomem *base; void __iomem *ptp_base; u16 swcfg; /* swcfg shadow */