From patchwork Tue Dec 7 12:48:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Horatiu Vultur X-Patchwork-Id: 521717 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 AA827C433EF for ; Tue, 7 Dec 2021 12:48:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236624AbhLGMv6 (ORCPT ); Tue, 7 Dec 2021 07:51:58 -0500 Received: from esa.microchip.iphmx.com ([68.232.153.233]:19230 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236657AbhLGMvw (ORCPT ); Tue, 7 Dec 2021 07:51:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1638881302; x=1670417302; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3jlWJuVFnpRvgwKLL05l8uJiw77Lw+1rwRBwncBIIRs=; b=XnmxjGSQjwl7bOAF5AdRmDTMUDxv0A3sy7zEnE14YXE7NYaOwq6rdrk3 BKgw/VacE4KV3DCLespyUx1CF97uFRNc/IrRtwhKwq0i0HyM7+rIsjyNS MMY+4+heUtA+Pba3p0T1hMTdxrRx08ggVw9n0QY5Za/A1847INDrTDh4e Jv4D1kNj2Egni/P7b5jsLydL7XH5ibCaC/LQrB/jr9IcVOpfmR2wQ/GxE mlTglu/faRhJlntkg/ZBjYdZvV4QLxY6nTMpIdI03p/3LHcQAdfaYxeSp mG1+I7Jnpc/WGBoYNn2p3sE7UQxPMcqJzWU7EmSuVg5nNZhckSKQECxC4 Q==; IronPort-SDR: seaMmQ8y9OYQJkaTAvF8NJpIg2wvB8w1IeautMagyeilDQMA7nrmS2ZvaoHcpkfN2s3FIuZf3D YYLDS7Hjq3XCOvja5kFh2deufset6G0C4evxpHtTttIXSlYdSNfJoV1PmBAhbyyjKMHmyu3D1I VFjZRGiHQP6J34nZXxdB1oVFEBy3nzoElkzQWWUFIufm1xq4EowOd/cuRuuKRpIRNs75dfJQLK YrB0cRSaez0/wLZKqnkuUqBH8iH1FkpHsWXM0FHq1thsw4xTnNUtH8Y0+CAD+6HykOa13AGVFF zWQmNF9NYFxxy65KyyQi8X3n X-IronPort-AV: E=Sophos;i="5.87,293,1631602800"; d="scan'208";a="145795272" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 07 Dec 2021 05:48:21 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.14; Tue, 7 Dec 2021 05:48:20 -0700 Received: from soft-dev3-1.microsemi.net (10.10.115.15) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2176.14 via Frontend Transport; Tue, 7 Dec 2021 05:48:18 -0700 From: Horatiu Vultur To: , , , , , , , CC: Horatiu Vultur Subject: [PATCH net-next v2 5/6] net: lan966x: Add vlan support Date: Tue, 7 Dec 2021 13:48:37 +0100 Message-ID: <20211207124838.2215451-6-horatiu.vultur@microchip.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211207124838.2215451-1-horatiu.vultur@microchip.com> References: <20211207124838.2215451-1-horatiu.vultur@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This adds support for vlan in lan966x. This allows add/remove front ports from vlans and also allows the CPU port to be added/remove from vlans. In this way it is possible to filter frames towards the CPU based on the vlan. Signed-off-by: Horatiu Vultur --- .../net/ethernet/microchip/lan966x/Makefile | 2 +- .../ethernet/microchip/lan966x/lan966x_mac.c | 2 +- .../ethernet/microchip/lan966x/lan966x_main.c | 35 +- .../ethernet/microchip/lan966x/lan966x_main.h | 39 +- .../ethernet/microchip/lan966x/lan966x_vlan.c | 432 ++++++++++++++++++ 5 files changed, 504 insertions(+), 6 deletions(-) create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile index 2989ba528236..f7e6068a91cb 100644 --- a/drivers/net/ethernet/microchip/lan966x/Makefile +++ b/drivers/net/ethernet/microchip/lan966x/Makefile @@ -6,4 +6,4 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \ - lan966x_mac.o lan966x_ethtool.o + lan966x_mac.o lan966x_ethtool.o lan966x_vlan.o diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c index 2a5dca44fe59..00e9763ec6d2 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c @@ -195,7 +195,7 @@ static void lan966x_fdb_call_notifiers(enum switchdev_notifier_type type, struct switchdev_notifier_fdb_info info = { 0 }; info.addr = mac; - info.vid = vid == PORT_PVID ? 0 : vid; + info.vid = vid == UNAWARE_PVID ? 0 : vid; info.offloaded = true; call_switchdev_notifiers(type, dev, &info.info, NULL); } diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 7c6d6293611a..f9c46c3d106d 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -103,17 +103,18 @@ static int lan966x_create_targets(struct platform_device *pdev, static int lan966x_port_set_mac_address(struct net_device *dev, void *p) { struct lan966x_port *port = netdev_priv(dev); + u16 pvid = lan966x_vlan_port_get_pvid(port); struct lan966x *lan966x = port->lan966x; const struct sockaddr *addr = p; int ret; /* Learn the new net device MAC address in the mac table. */ - ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, port->pvid); + ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, pvid); if (ret) return ret; /* Then forget the previous one. */ - ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, port->pvid); + ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, pvid); if (ret) return ret; @@ -283,6 +284,12 @@ static void lan966x_ifh_set_ipv(void *ifh, u64 bypass) IFH_POS_IPV, IFH_LEN * 4, PACK, 0); } +static void lan966x_ifh_set_vid(void *ifh, u64 vid) +{ + packing(ifh, &vid, IFH_POS_TCI + IFH_WID_TCI - 1, + IFH_POS_TCI, IFH_LEN * 4, PACK, 0); +} + static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev) { struct lan966x_port *port = netdev_priv(dev); @@ -294,6 +301,7 @@ static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev) lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port)); lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority); lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority); + lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb)); return lan966x_port_ifh_xmit(skb, ifh, dev); } @@ -365,6 +373,18 @@ static int lan966x_port_get_parent_id(struct net_device *dev, return 0; } +static int lan966x_port_set_features(struct net_device *dev, + netdev_features_t features) +{ + struct lan966x_port *port = netdev_priv(dev); + netdev_features_t changed = dev->features ^ features; + + if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) + lan966x_vlan_mode(port, features); + + return 0; +} + static const struct net_device_ops lan966x_port_netdev_ops = { .ndo_open = lan966x_port_open, .ndo_stop = lan966x_port_stop, @@ -376,6 +396,9 @@ static const struct net_device_ops lan966x_port_netdev_ops = { .ndo_get_stats64 = lan966x_stats_get, .ndo_set_mac_address = lan966x_port_set_mac_address, .ndo_get_port_parent_id = lan966x_port_get_parent_id, + .ndo_set_features = lan966x_port_set_features, + .ndo_vlan_rx_add_vid = lan966x_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = lan966x_vlan_rx_kill_vid, }; static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp) @@ -590,7 +613,6 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p, port->dev = dev; port->lan966x = lan966x; port->chip_port = p; - port->pvid = PORT_PVID; lan966x->ports[p] = port; dev->max_mtu = ETH_MAX_MTU; @@ -643,6 +665,10 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p, return err; } + lan966x_vlan_port_set_vlan_aware(port, 0); + lan966x_vlan_port_set_vid(port, UNAWARE_PVID, false, false); + lan966x_vlan_port_apply(port); + return 0; } @@ -653,6 +679,9 @@ static void lan966x_init(struct lan966x *lan966x) /* MAC table initialization */ lan966x_mac_init(lan966x); + /* Vlan initialization */ + lan966x_vlan_init(lan966x); + /* Flush queues */ lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) | GENMASK(1, 0), diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h index fcd5d09a070c..2dd1e5005edd 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h @@ -4,6 +4,7 @@ #define __LAN966X_MAIN_H__ #include +#include #include #include #include @@ -22,7 +23,7 @@ #define PGID_SRC 80 #define PGID_ENTRIES 89 -#define PORT_PVID 0 +#define UNAWARE_PVID 4095 /* Reserved amount for (SRC, PRIO) at index 8*SRC + PRIO */ #define QSYS_Q_RSRV 95 @@ -78,6 +79,9 @@ struct lan966x { struct list_head mac_entries; spinlock_t mac_lock; /* lock for mac_entries list */ + u16 vlan_mask[VLAN_N_VID]; + DECLARE_BITMAP(cpu_vlan_mask, VLAN_N_VID); + /* stats */ const struct lan966x_stat_layout *stats_layout; u32 num_stats; @@ -109,6 +113,8 @@ struct lan966x_port { u8 chip_port; u16 pvid; + u16 vid; + u8 vlan_aware; struct phylink_config phylink_config; struct phylink_pcs phylink_pcs; @@ -157,6 +163,37 @@ int lan966x_mac_add_entry(struct lan966x *lan966x, void lan966x_mac_purge_entries(struct lan966x *lan966x); irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x); +void lan966x_vlan_init(struct lan966x *lan966x); +void lan966x_vlan_port_apply(struct lan966x_port *port); + +int lan966x_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid); +int lan966x_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid); + +void lan966x_vlan_mode(struct lan966x_port *port, netdev_features_t features); +u16 lan966x_vlan_port_get_pvid(struct lan966x_port *port); + +bool lan966x_vlan_port_member_vlan_mask(struct lan966x_port *port, u16 vid); +bool lan966x_vlan_cpu_member_vlan_mask(struct lan966x *lan966x, u16 vid); +bool lan966x_vlan_port_any_vlan_mask(struct lan966x *lan966x, u16 vid); + +void lan966x_vlan_cpu_set_vlan_aware(struct lan966x_port *port); +void lan966x_vlan_port_set_vlan_aware(struct lan966x_port *port, + bool vlan_aware); +int lan966x_vlan_port_set_vid(struct lan966x_port *port, u16 vid, + bool pvid, bool untagged); +int lan966x_vlan_port_add_vlan(struct lan966x_port *port, + u16 vid, + bool pvid, + bool untagged); +int lan966x_vlan_port_del_vlan(struct lan966x_port *port, + u16 vid); +int lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, + struct net_device *dev, + u16 vid); +int lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, + struct net_device *dev, + u16 vid); + static inline void __iomem *lan_addr(void __iomem *base[], int id, int tinst, int tcnt, int gbase, int ginst, diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c b/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c new file mode 100644 index 000000000000..c035f24e77c2 --- /dev/null +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c @@ -0,0 +1,432 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include "lan966x_main.h" + +#define VLANACCESS_CMD_IDLE 0 +#define VLANACCESS_CMD_READ 1 +#define VLANACCESS_CMD_WRITE 2 +#define VLANACCESS_CMD_INIT 3 + +static int lan966x_vlan_get_status(struct lan966x *lan966x) +{ + return lan_rd(lan966x, ANA_VLANACCESS); +} + +static int lan966x_vlan_wait_for_completion(struct lan966x *lan966x) +{ + u32 val; + + return readx_poll_timeout(lan966x_vlan_get_status, + lan966x, val, + (val & ANA_VLANACCESS_VLAN_TBL_CMD) == + VLANACCESS_CMD_IDLE, + TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); +} + +static int lan966x_vlan_set_mask(struct lan966x *lan966x, u16 vid) +{ + u16 mask = lan966x->vlan_mask[vid]; + bool cpu_dis; + + cpu_dis = !(mask & BIT(CPU_PORT)); + + /* Set flags and the VID to configure */ + lan_rmw(ANA_VLANTIDX_VLAN_PGID_CPU_DIS_SET(cpu_dis) | + ANA_VLANTIDX_V_INDEX_SET(vid), + ANA_VLANTIDX_VLAN_PGID_CPU_DIS | + ANA_VLANTIDX_V_INDEX, + lan966x, ANA_VLANTIDX); + + /* Set the vlan port members mask */ + lan_rmw(ANA_VLAN_PORT_MASK_VLAN_PORT_MASK_SET(mask), + ANA_VLAN_PORT_MASK_VLAN_PORT_MASK, + lan966x, ANA_VLAN_PORT_MASK); + + /* Issue a write command */ + lan_rmw(ANA_VLANACCESS_VLAN_TBL_CMD_SET(VLANACCESS_CMD_WRITE), + ANA_VLANACCESS_VLAN_TBL_CMD, + lan966x, ANA_VLANACCESS); + + return lan966x_vlan_wait_for_completion(lan966x); +} + +void lan966x_vlan_init(struct lan966x *lan966x) +{ + u16 port, vid; + + /* Clear VLAN table, by default all ports are members of all VLANS */ + lan_rmw(ANA_VLANACCESS_VLAN_TBL_CMD_SET(VLANACCESS_CMD_INIT), + ANA_VLANACCESS_VLAN_TBL_CMD, + lan966x, ANA_VLANACCESS); + lan966x_vlan_wait_for_completion(lan966x); + + for (vid = 1; vid < VLAN_N_VID; vid++) { + lan966x->vlan_mask[vid] = 0; + lan966x_vlan_set_mask(lan966x, vid); + } + + /* Set all the ports + cpu to be part of UNAWARE_PVID */ + lan966x->vlan_mask[UNAWARE_PVID] = + GENMASK(lan966x->num_phys_ports - 1, 0) | BIT(CPU_PORT); + lan966x_vlan_set_mask(lan966x, UNAWARE_PVID); + + /* Configure the CPU port to be vlan aware */ + lan_wr(ANA_VLAN_CFG_VLAN_VID_SET(0) | + ANA_VLAN_CFG_VLAN_AWARE_ENA_SET(1) | + ANA_VLAN_CFG_VLAN_POP_CNT_SET(1), + lan966x, ANA_VLAN_CFG(CPU_PORT)); + + /* Set vlan ingress filter mask to all ports */ + lan_wr(GENMASK(lan966x->num_phys_ports, 0), + lan966x, ANA_VLANMASK); + + for (port = 0; port < lan966x->num_phys_ports; port++) { + lan_wr(0, lan966x, REW_PORT_VLAN_CFG(port)); + lan_wr(0, lan966x, REW_TAG_CFG(port)); + } +} + +static int lan966x_vlan_port_add_vlan_mask(struct lan966x_port *port, u16 vid) +{ + struct lan966x *lan966x = port->lan966x; + u8 p = port->chip_port; + + lan966x->vlan_mask[vid] |= BIT(p); + return lan966x_vlan_set_mask(lan966x, vid); +} + +static int lan966x_vlan_port_del_vlan_mask(struct lan966x_port *port, u16 vid) +{ + struct lan966x *lan966x = port->lan966x; + u8 p = port->chip_port; + + lan966x->vlan_mask[vid] &= ~BIT(p); + return lan966x_vlan_set_mask(lan966x, vid); +} + +bool lan966x_vlan_port_member_vlan_mask(struct lan966x_port *port, u16 vid) +{ + struct lan966x *lan966x = port->lan966x; + u8 p = port->chip_port; + + return lan966x->vlan_mask[vid] & BIT(p); +} + +bool lan966x_vlan_port_any_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + return !!(lan966x->vlan_mask[vid] & ~BIT(CPU_PORT)); +} + +static int lan966x_vlan_cpu_add_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + lan966x->vlan_mask[vid] |= BIT(CPU_PORT); + return lan966x_vlan_set_mask(lan966x, vid); +} + +static int lan966x_vlan_cpu_del_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + lan966x->vlan_mask[vid] &= ~BIT(CPU_PORT); + return lan966x_vlan_set_mask(lan966x, vid); +} + +bool lan966x_vlan_cpu_member_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + return lan966x->vlan_mask[vid] & BIT(CPU_PORT); +} + +static void lan966x_vlan_cpu_add_cpu_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + set_bit(vid, lan966x->cpu_vlan_mask); +} + +static void lan966x_vlan_cpu_del_cpu_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + clear_bit(vid, lan966x->cpu_vlan_mask); +} + +static bool lan966x_vlan_cpu_member_cpu_vlan_mask(struct lan966x *lan966x, u16 vid) +{ + return test_bit(vid, lan966x->cpu_vlan_mask); +} + +u16 lan966x_vlan_port_get_pvid(struct lan966x_port *port) +{ + return port->vlan_aware ? port->pvid : UNAWARE_PVID; +} + +int lan966x_vlan_port_set_vid(struct lan966x_port *port, u16 vid, + bool pvid, bool untagged) +{ + struct lan966x *lan966x = port->lan966x; + + /* Egress vlan classification */ + if (untagged && port->vid != vid) { + if (port->vid) { + dev_err(lan966x->dev, + "Port already has a native VLAN: %d\n", + port->vid); + return -EBUSY; + } + port->vid = vid; + } + + /* Default ingress vlan classification */ + if (pvid) + port->pvid = vid; + + return 0; +} + +static int lan966x_vlan_port_remove_vid(struct lan966x_port *port, u16 vid) +{ + if (port->pvid == vid) + port->pvid = 0; + + if (port->vid == vid) + port->vid = 0; + + return 0; +} + +void lan966x_vlan_port_set_vlan_aware(struct lan966x_port *port, + bool vlan_aware) +{ + port->vlan_aware = vlan_aware; +} + +void lan966x_vlan_cpu_set_vlan_aware(struct lan966x_port *port) +{ + struct lan966x *lan966x = port->lan966x; + + if (!port->vlan_aware) { + /* In case of vlan unaware, all the ports will be set in + * UNAWARE_PVID and have their PVID set to this PVID + * The CPU doesn't need to be added because it is always part of + * that vlan, it is required just to add entries in the MAC + * table for the front port and the CPU + */ + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, UNAWARE_PVID); + + lan966x_vlan_port_add_vlan_mask(port, UNAWARE_PVID); + lan966x_vlan_port_apply(port); + } else { + /* In case of vlan aware, just clear what happened when changed + * to vlan unaware + */ + lan966x_mac_cpu_forget(lan966x, port->dev->dev_addr, UNAWARE_PVID); + + lan966x_vlan_port_del_vlan_mask(port, UNAWARE_PVID); + lan966x_vlan_port_apply(port); + } +} + +void lan966x_vlan_port_apply(struct lan966x_port *port) +{ + struct lan966x *lan966x = port->lan966x; + u16 pvid; + u32 val; + + pvid = lan966x_vlan_port_get_pvid(port); + + /* Ingress clasification (ANA_PORT_VLAN_CFG) */ + /* Default vlan to casify for untagged frames (may be zero) */ + val = ANA_VLAN_CFG_VLAN_VID_SET(pvid); + if (port->vlan_aware) + val |= ANA_VLAN_CFG_VLAN_AWARE_ENA_SET(1) | + ANA_VLAN_CFG_VLAN_POP_CNT_SET(1); + + lan_rmw(val, + ANA_VLAN_CFG_VLAN_VID | ANA_VLAN_CFG_VLAN_AWARE_ENA | + ANA_VLAN_CFG_VLAN_POP_CNT, + lan966x, ANA_VLAN_CFG(port->chip_port)); + + /* Drop frames with multicast source address */ + val = ANA_DROP_CFG_DROP_MC_SMAC_ENA_SET(1); + if (port->vlan_aware && !pvid) + /* If port is vlan-aware and tagged, drop untagged and priority + * tagged frames. + */ + val |= ANA_DROP_CFG_DROP_UNTAGGED_ENA_SET(1) | + ANA_DROP_CFG_DROP_PRIO_S_TAGGED_ENA_SET(1) | + ANA_DROP_CFG_DROP_PRIO_C_TAGGED_ENA_SET(1); + + lan_wr(val, lan966x, ANA_DROP_CFG(port->chip_port)); + + /* Egress configuration (REW_TAG_CFG): VLAN tag type to 8021Q */ + val = REW_TAG_CFG_TAG_TPID_CFG_SET(0); + if (port->vlan_aware) { + if (port->vid) + /* Tag all frames except when VID == DEFAULT_VLAN */ + val |= REW_TAG_CFG_TAG_CFG_SET(1); + else + val |= REW_TAG_CFG_TAG_CFG_SET(3); + } + + /* Update only some bits in the register */ + lan_rmw(val, + REW_TAG_CFG_TAG_TPID_CFG | REW_TAG_CFG_TAG_CFG, + lan966x, REW_TAG_CFG(port->chip_port)); + + /* Set default VLAN and tag type to 8021Q */ + lan_rmw(REW_PORT_VLAN_CFG_PORT_TPID_SET(ETH_P_8021Q) | + REW_PORT_VLAN_CFG_PORT_VID_SET(port->vid), + REW_PORT_VLAN_CFG_PORT_TPID | + REW_PORT_VLAN_CFG_PORT_VID, + lan966x, REW_PORT_VLAN_CFG(port->chip_port)); +} + +int lan966x_vlan_port_add_vlan(struct lan966x_port *port, + u16 vid, + bool pvid, + bool untagged) +{ + struct lan966x *lan966x = port->lan966x; + + /* If the CPU(br) is already part of the vlan then add the MAC + * address of the device in MAC table to copy the frames to the + * CPU(br). If the CPU(br) is not part of the vlan then it would + * just drop the frames. + */ + if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, vid)) { + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, vid); + lan966x_vlan_cpu_add_vlan_mask(lan966x, vid); + } + + lan966x_vlan_port_set_vid(port, vid, pvid, untagged); + lan966x_vlan_port_add_vlan_mask(port, vid); + lan966x_vlan_port_apply(port); + + return 0; +} + +int lan966x_vlan_port_del_vlan(struct lan966x_port *port, + u16 vid) +{ + struct lan966x *lan966x = port->lan966x; + + /* In case the CPU(br) is part of the vlan then remove the MAC entry + * because frame doesn't need to reach to CPU + */ + if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, vid)) + lan966x_mac_cpu_forget(lan966x, port->dev->dev_addr, vid); + + lan966x_vlan_port_remove_vid(port, vid); + lan966x_vlan_port_del_vlan_mask(port, vid); + lan966x_vlan_port_apply(port); + + /* In case there are no other ports in vlan then remove the CPU from + * that vlan but still keep it in the mask because it may be needed + * again then another port gets added in tha vlan + */ + if (!lan966x_vlan_port_any_vlan_mask(lan966x, vid)) + lan966x_vlan_cpu_del_vlan_mask(lan966x, vid); + + return 0; +} + +int lan966x_vlan_cpu_add_vlan(struct lan966x *lan966x, + struct net_device *dev, + u16 vid) +{ + int p; + + /* Iterate over the ports and see which ones are part of the + * vlan and for those ports add entry in the MAC table to + * copy the frames to the CPU + */ + for (p = 0; p < lan966x->num_phys_ports; p++) { + struct lan966x_port *port = lan966x->ports[p]; + + if (!port || + !lan966x_vlan_port_member_vlan_mask(port, vid)) + continue; + + lan966x_mac_cpu_learn(lan966x, port->dev->dev_addr, vid); + } + + /* Add an entry in the MAC table for the CPU */ + if (lan966x_vlan_port_any_vlan_mask(lan966x, vid)) + lan966x_mac_cpu_learn(lan966x, dev->dev_addr, vid); + + /* Add the CPU part of the vlan only if there is another port in that + * vlan otherwise all the broadcast frames in that vlan will go to CPU + * even if none of the ports are in the vlan and then the CPU will just + * need to discard these frames. It is required to store this + * information so when a front port is added then it would add also the + * CPU port. + */ + if (lan966x_vlan_port_any_vlan_mask(lan966x, vid)) + lan966x_vlan_cpu_add_vlan_mask(lan966x, vid); + + lan966x_vlan_cpu_add_cpu_vlan_mask(lan966x, vid); + + return 0; +} + +int lan966x_vlan_cpu_del_vlan(struct lan966x *lan966x, + struct net_device *dev, + u16 vid) +{ + int p; + + /* Iterate over the ports and see which ones are part of the + * vlan and for those ports remove entry in the MAC table to + * copy the frames to the CPU + */ + for (p = 0; p < lan966x->num_phys_ports; p++) { + struct lan966x_port *port = lan966x->ports[p]; + + if (!port || + !lan966x_vlan_port_member_vlan_mask(port, vid)) + continue; + + lan966x_mac_cpu_forget(lan966x, port->dev->dev_addr, vid); + } + + /* Remove an entry in the MAC table for the CPU */ + lan966x_mac_cpu_forget(lan966x, dev->dev_addr, vid); + + /* Remove the CPU part of the vlan */ + lan966x_vlan_cpu_del_cpu_vlan_mask(lan966x, vid); + lan966x_vlan_cpu_del_vlan_mask(lan966x, vid); + + return 0; +} + +int lan966x_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) +{ + struct lan966x_port *port = netdev_priv(dev); + + lan966x_vlan_port_set_vid(port, vid, false, false); + lan966x_vlan_port_add_vlan_mask(port, vid); + lan966x_vlan_port_apply(port); + + return 0; +} + +int lan966x_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, + u16 vid) +{ + struct lan966x_port *port = netdev_priv(dev); + + lan966x_vlan_port_remove_vid(port, vid); + lan966x_vlan_port_del_vlan_mask(port, vid); + lan966x_vlan_port_apply(port); + + return 0; +} + +void lan966x_vlan_mode(struct lan966x_port *port, + netdev_features_t features) +{ + struct lan966x *lan966x = port->lan966x; + u32 val; + + /* Filtering */ + val = lan_rd(lan966x, ANA_VLANMASK); + if (features & NETIF_F_HW_VLAN_CTAG_FILTER) + val |= BIT(port->chip_port); + else + val &= ~BIT(port->chip_port); + lan_wr(val, lan966x, ANA_VLANMASK); +}