From patchwork Wed Feb 9 21:13:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Angelo Daros de Luca X-Patchwork-Id: 12740908 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64033C433EF for ; Wed, 9 Feb 2022 21:14:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233017AbiBIVOT (ORCPT ); Wed, 9 Feb 2022 16:14:19 -0500 Received: from gmail-smtp-in.l.google.com ([23.128.96.19]:39238 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233028AbiBIVOQ (ORCPT ); Wed, 9 Feb 2022 16:14:16 -0500 Received: from mail-oo1-xc34.google.com (mail-oo1-xc34.google.com [IPv6:2607:f8b0:4864:20::c34]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EAB0FC001914 for ; Wed, 9 Feb 2022 13:14:13 -0800 (PST) Received: by mail-oo1-xc34.google.com with SMTP id p190-20020a4a2fc7000000b0031820de484aso3955210oop.9 for ; Wed, 09 Feb 2022 13:14:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2W0R4oXSwvk7S+2bhP/ex0N55F3trb01+bE8DCCjb84=; b=dTZHc9aB1xAzNbmZc/S4YVW+VYLDWgchWydCiXNV9r1yBR4cPm8izM1hsTa3DKZdkv uNCUyiQVz/+nbTHbw5Ka0yKVULMZ/Iy7SPvycIPLnu6YCc0GKHLGIp8BP/jSe9+0JIAg GMk2DIITg5C37vfnUCBFQnqvHcy3f8sWKH/dsBDonTMV/PiVcP1tAN3UMXKN3xetZQ9g X3ncoaGx+eM2DDPBy6KDH3fyh8LzHUxOh63iukijlY51RLG3El7Re+0/qp6pigmDo1RF 53qqPvQWUTCEQkP97Flu+5Gx7zNA0zCrEHmX7oVudcZGHKu5LJt448fYHpD12o/ek7YZ rkSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2W0R4oXSwvk7S+2bhP/ex0N55F3trb01+bE8DCCjb84=; b=8MfsxvDScrHuOjIfxM0tl/uXdNmepSQOE8eQEHxoJqCl9Pk2mjN70rmUIVEE0OUaEH hiMLrAsvoGggnImWfDu1d+NUK5GBb205KgzaHlxElsNkxux6OrpvUnr/431WxMhAYjl+ sHVeW5kcTCJRw/HmQm3hODY2GmVpA+O1RjoV1WtjVJR0ky6RvioL475IGlj14hLsTaod kHJgb6BWb2vURHHk/WNYyb5zsrrESC7VgkiR45/34A0h6LHb6E6aO0t87SHYyr8VmGk7 aJAO395pIajqtkHlIooO4KM0Bu4CtIx8FSr276qlI07J0m/hUJO6z9EuNJZT6+2jpIq+ JQkQ== X-Gm-Message-State: AOAM530gWy6/Nwbn6LMMfGBvsA47ayDGl1ZeVYlx5rsukfqpzk1szp3z cTZ0XJIcNIqMx5kvGwnh4Er0PF+HbxuqPQ== X-Google-Smtp-Source: ABdhPJywzK8nnFkARToRwWSa0So/OtanEIou+ZESrPyPdjT3MG1FvRXaE9vWacC4viYzUYLcAUn80Q== X-Received: by 2002:a05:6870:6296:: with SMTP id s22mr1591374oan.231.1644441251146; Wed, 09 Feb 2022 13:14:11 -0800 (PST) Received: from tresc043793.tre-sc.gov.br (187-049-235-234.floripa.net.br. [187.49.235.234]) by smtp.gmail.com with ESMTPSA id n9sm6899945otf.9.2022.02.09.13.14.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Feb 2022 13:14:10 -0800 (PST) From: Luiz Angelo Daros de Luca To: netdev@vger.kernel.org Cc: linus.walleij@linaro.org, andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, davem@davemloft.net, kuba@kernel.org, alsi@bang-olufsen.dk, arinc.unal@arinc9.com, Luiz Angelo Daros de Luca Subject: [PATCH net-next 1/2] net: dsa: tag_rtl8_4: add rtl8_4t tailing variant Date: Wed, 9 Feb 2022 18:13:11 -0300 Message-Id: <20220209211312.7242-2-luizluca@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220209211312.7242-1-luizluca@gmail.com> References: <20220209211312.7242-1-luizluca@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The switch supports the same tag both before ethertype or before CRC. Signed-off-by: Luiz Angelo Daros de Luca --- include/net/dsa.h | 2 + net/dsa/tag_rtl8_4.c | 119 ++++++++++++++++++++++++++++++++----------- 2 files changed, 90 insertions(+), 31 deletions(-) diff --git a/include/net/dsa.h b/include/net/dsa.h index fd1f62a6e0a8..b688ced04b0e 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -52,6 +52,7 @@ struct phylink_link_state; #define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 #define DSA_TAG_PROTO_SJA1110_VALUE 23 #define DSA_TAG_PROTO_RTL8_4_VALUE 24 +#define DSA_TAG_PROTO_RTL8_4T_VALUE 25 enum dsa_tag_protocol { DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, @@ -79,6 +80,7 @@ enum dsa_tag_protocol { DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, + DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, }; struct dsa_switch; diff --git a/net/dsa/tag_rtl8_4.c b/net/dsa/tag_rtl8_4.c index 02686ad4045d..a9883b0c1d51 100644 --- a/net/dsa/tag_rtl8_4.c +++ b/net/dsa/tag_rtl8_4.c @@ -84,87 +84,123 @@ #define RTL8_4_TX GENMASK(3, 0) #define RTL8_4_RX GENMASK(10, 0) -static struct sk_buff *rtl8_4_tag_xmit(struct sk_buff *skb, - struct net_device *dev) +static inline void rtl8_4_write_tag(struct sk_buff *skb, struct net_device *dev, + char *tag) { struct dsa_port *dp = dsa_slave_to_port(dev); - __be16 *tag; - - skb_push(skb, RTL8_4_TAG_LEN); - - dsa_alloc_etype_header(skb, RTL8_4_TAG_LEN); - tag = dsa_etype_header_pos_tx(skb); + __be16 *tag16 = (__be16 *)tag; /* Set Realtek EtherType */ - tag[0] = htons(ETH_P_REALTEK); + tag16[0] = htons(ETH_P_REALTEK); /* Set Protocol; zero REASON */ - tag[1] = htons(FIELD_PREP(RTL8_4_PROTOCOL, RTL8_4_PROTOCOL_RTL8365MB)); + tag16[1] = htons(FIELD_PREP(RTL8_4_PROTOCOL, RTL8_4_PROTOCOL_RTL8365MB)); /* Zero FID_EN, FID, PRI_EN, PRI, KEEP; set LEARN_DIS */ - tag[2] = htons(FIELD_PREP(RTL8_4_LEARN_DIS, 1)); + tag16[2] = htons(FIELD_PREP(RTL8_4_LEARN_DIS, 1)); /* Zero ALLOW; set RX (CPU->switch) forwarding port mask */ - tag[3] = htons(FIELD_PREP(RTL8_4_RX, BIT(dp->index))); + tag16[3] = htons(FIELD_PREP(RTL8_4_RX, BIT(dp->index))); +} + +static struct sk_buff *rtl8_4_tag_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + skb_push(skb, RTL8_4_TAG_LEN); + + dsa_alloc_etype_header(skb, RTL8_4_TAG_LEN); + + rtl8_4_write_tag(skb, dev, dsa_etype_header_pos_tx(skb)); return skb; } -static struct sk_buff *rtl8_4_tag_rcv(struct sk_buff *skb, - struct net_device *dev) +static struct sk_buff *rtl8_4t_tag_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + rtl8_4_write_tag(skb, dev, skb_put(skb, RTL8_4_TAG_LEN)); + + return skb; +} + +static int rtl8_4_read_tag(struct sk_buff *skb, struct net_device *dev, + char *tag) { - __be16 *tag; u16 etype; u8 reason; u8 proto; u8 port; - - if (unlikely(!pskb_may_pull(skb, RTL8_4_TAG_LEN))) - return NULL; - - tag = dsa_etype_header_pos_rx(skb); + __be16 *tag16 = (__be16 *)tag; /* Parse Realtek EtherType */ - etype = ntohs(tag[0]); + etype = ntohs(tag16[0]); if (unlikely(etype != ETH_P_REALTEK)) { dev_warn_ratelimited(&dev->dev, "non-realtek ethertype 0x%04x\n", etype); - return NULL; + return -EPROTO; } /* Parse Protocol */ - proto = FIELD_GET(RTL8_4_PROTOCOL, ntohs(tag[1])); + proto = FIELD_GET(RTL8_4_PROTOCOL, ntohs(tag16[1])); if (unlikely(proto != RTL8_4_PROTOCOL_RTL8365MB)) { dev_warn_ratelimited(&dev->dev, "unknown realtek protocol 0x%02x\n", proto); - return NULL; + return -EPROTO; } /* Parse REASON */ - reason = FIELD_GET(RTL8_4_REASON, ntohs(tag[1])); + reason = FIELD_GET(RTL8_4_REASON, ntohs(tag16[1])); /* Parse TX (switch->CPU) */ - port = FIELD_GET(RTL8_4_TX, ntohs(tag[3])); + port = FIELD_GET(RTL8_4_TX, ntohs(tag16[3])); skb->dev = dsa_master_find_slave(dev, 0, port); if (!skb->dev) { dev_warn_ratelimited(&dev->dev, "could not find slave for port %d\n", port); - return NULL; + return -ENOENT; } + if (reason != RTL8_4_REASON_TRAP) + dsa_default_offload_fwd_mark(skb); + + return 0; +} + +static struct sk_buff *rtl8_4_tag_rcv(struct sk_buff *skb, + struct net_device *dev) +{ + if (unlikely(!pskb_may_pull(skb, RTL8_4_TAG_LEN))) + return NULL; + + if (unlikely(rtl8_4_read_tag(skb, dev, dsa_etype_header_pos_rx(skb)))) + return NULL; + /* Remove tag and recalculate checksum */ skb_pull_rcsum(skb, RTL8_4_TAG_LEN); dsa_strip_etype_header(skb, RTL8_4_TAG_LEN); - if (reason != RTL8_4_REASON_TRAP) - dsa_default_offload_fwd_mark(skb); + return skb; +} + +static struct sk_buff *rtl8_4t_tag_rcv(struct sk_buff *skb, + struct net_device *dev) +{ + if (skb_linearize(skb)) + return NULL; + + if (unlikely(rtl8_4_read_tag(skb, dev, skb_tail_pointer(skb) - RTL8_4_TAG_LEN))) + return NULL; + + if (pskb_trim_rcsum(skb, skb->len - RTL8_4_TAG_LEN)) + return NULL; return skb; } +/* Ethertype version */ static const struct dsa_device_ops rtl8_4_netdev_ops = { .name = "rtl8_4", .proto = DSA_TAG_PROTO_RTL8_4, @@ -172,7 +208,28 @@ static const struct dsa_device_ops rtl8_4_netdev_ops = { .rcv = rtl8_4_tag_rcv, .needed_headroom = RTL8_4_TAG_LEN, }; -module_dsa_tag_driver(rtl8_4_netdev_ops); -MODULE_LICENSE("GPL"); +DSA_TAG_DRIVER(rtl8_4_netdev_ops); + MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_RTL8_4); + +/* Tail version */ +static const struct dsa_device_ops rtl8_4t_netdev_ops = { + .name = "rtl8_4t", + .proto = DSA_TAG_PROTO_RTL8_4T, + .xmit = rtl8_4t_tag_xmit, + .rcv = rtl8_4t_tag_rcv, + .needed_tailroom = RTL8_4_TAG_LEN, +}; + +DSA_TAG_DRIVER(rtl8_4t_netdev_ops); + +MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_RTL8_4L); + +static struct dsa_tag_driver *dsa_tag_drivers[] = { + &DSA_TAG_DRIVER_NAME(rtl8_4_netdev_ops), + &DSA_TAG_DRIVER_NAME(rtl8_4t_netdev_ops), +}; +module_dsa_tag_drivers(dsa_tag_drivers); + +MODULE_LICENSE("GPL"); From patchwork Wed Feb 9 21:13:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Angelo Daros de Luca X-Patchwork-Id: 12740909 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75136C433EF for ; Wed, 9 Feb 2022 21:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230327AbiBIVOU (ORCPT ); Wed, 9 Feb 2022 16:14:20 -0500 Received: from gmail-smtp-in.l.google.com ([23.128.96.19]:39260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233010AbiBIVOR (ORCPT ); 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[187.49.235.234]) by smtp.gmail.com with ESMTPSA id n9sm6899945otf.9.2022.02.09.13.14.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Feb 2022 13:14:15 -0800 (PST) From: Luiz Angelo Daros de Luca To: netdev@vger.kernel.org Cc: linus.walleij@linaro.org, andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, davem@davemloft.net, kuba@kernel.org, alsi@bang-olufsen.dk, arinc.unal@arinc9.com, Luiz Angelo Daros de Luca Subject: [PATCH net-next 2/2] net: dsa: realtek: rtl8365mb: add support for rtl8_4t Date: Wed, 9 Feb 2022 18:13:12 -0300 Message-Id: <20220209211312.7242-3-luizluca@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220209211312.7242-1-luizluca@gmail.com> References: <20220209211312.7242-1-luizluca@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The tailing tag is also supported by this family. The default is still rtl8_4 but now the switch supports changing the tag to rtl8_4t. Signed-off-by: Luiz Angelo Daros de Luca --- drivers/net/dsa/realtek/rtl8365mb.c | 63 +++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c index e0c7f64bc56f..02d1521887ae 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -853,9 +853,70 @@ static enum dsa_tag_protocol rtl8365mb_get_tag_protocol(struct dsa_switch *ds, int port, enum dsa_tag_protocol mp) { + struct realtek_priv *priv = ds->priv; + u32 val; + + /* No way to return error */ + regmap_read(priv->map, RTL8365MB_CPU_CTRL_REG, &val); + + switch (FIELD_GET(RTL8365MB_CPU_CTRL_TAG_FORMAT_MASK, val)) { + case RTL8365MB_CPU_FORMAT_4BYTES: + /* Similar to DSA_TAG_PROTO_RTL4_A but with 1-byte version + * To CPU: [0x88 0x99 0x04 portnum]. Not supported yet. + */ + break; + case RTL8365MB_CPU_FORMAT_8BYTES: + switch (FIELD_GET(RTL8365MB_CPU_CTRL_TAG_POSITION_MASK, val)) { + case RTL8365MB_CPU_POS_BEFORE_CRC: + return DSA_TAG_PROTO_RTL8_4T; + case RTL8365MB_CPU_POS_AFTER_SA: + default: + return DSA_TAG_PROTO_RTL8_4; + } + break; + } + return DSA_TAG_PROTO_RTL8_4; } +static int rtl8365mb_change_tag_protocol(struct dsa_switch *ds, int cpu, + enum dsa_tag_protocol proto) +{ + struct realtek_priv *priv = ds->priv; + int tag_position; + int tag_format; + int ret; + + switch (proto) { + case DSA_TAG_PROTO_RTL8_4: + tag_format = RTL8365MB_CPU_FORMAT_8BYTES; + tag_position = RTL8365MB_CPU_POS_AFTER_SA; + break; + case DSA_TAG_PROTO_RTL8_4T: + tag_format = RTL8365MB_CPU_FORMAT_8BYTES; + tag_position = RTL8365MB_CPU_POS_BEFORE_CRC; + break; + /* The switch also supports a 4-byte format, similar to rtl4a but with + * the same 0x04 8-bit version and probably 8-bit port source/dest. + * There is no public doc about it. Not supported yet. + */ + default: + return -EPROTONOSUPPORT; + } + + ret = regmap_update_bits(priv->map, RTL8365MB_CPU_CTRL_REG, + RTL8365MB_CPU_CTRL_TAG_POSITION_MASK | + RTL8365MB_CPU_CTRL_TAG_FORMAT_MASK, + FIELD_PREP(RTL8365MB_CPU_CTRL_TAG_POSITION_MASK, + tag_position) | + FIELD_PREP(RTL8365MB_CPU_CTRL_TAG_FORMAT_MASK, + tag_format)); + if (ret) + return ret; + + return 0; +} + static int rtl8365mb_ext_config_rgmii(struct realtek_priv *priv, int port, phy_interface_t interface) { @@ -2079,6 +2140,7 @@ static int rtl8365mb_detect(struct realtek_priv *priv) static const struct dsa_switch_ops rtl8365mb_switch_ops_smi = { .get_tag_protocol = rtl8365mb_get_tag_protocol, + .change_tag_protocol = rtl8365mb_change_tag_protocol, .setup = rtl8365mb_setup, .teardown = rtl8365mb_teardown, .phylink_get_caps = rtl8365mb_phylink_get_caps, @@ -2097,6 +2159,7 @@ static const struct dsa_switch_ops rtl8365mb_switch_ops_smi = { static const struct dsa_switch_ops rtl8365mb_switch_ops_mdio = { .get_tag_protocol = rtl8365mb_get_tag_protocol, + .change_tag_protocol = rtl8365mb_change_tag_protocol, .setup = rtl8365mb_setup, .teardown = rtl8365mb_teardown, .phylink_get_caps = rtl8365mb_phylink_get_caps,