Allow MTU up to 2026 on mediatek, ramips/mt7621 targets. Signed-off-by: DENG Qingfang <dqf...@gmail.com> --- ...thernet-mediatek-support-setting-MTU.patch | 138 ++++++++++++++++++ ...1-net-dsa-mt7530-support-setting-MTU.patch | 112 ++++++++++++++ ...-dsa-mt7530-enable-MTU-normalization.patch | 36 +++++ 3 files changed, 286 insertions(+) create mode 100644 target/linux/generic/backport-5.10/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch create mode 100644 target/linux/generic/backport-5.10/762-v5.11-net-dsa-mt7530-support-setting-MTU.patch create mode 100644 target/linux/generic/backport-5.10/763-v5.11-net-dsa-mt7530-enable-MTU-normalization.patch
diff --git a/target/linux/generic/backport-5.10/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch b/target/linux/generic/backport-5.10/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch new file mode 100644 index 0000000000..289d140f34 --- /dev/null +++ b/target/linux/generic/backport-5.10/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch @@ -0,0 +1,138 @@ +From 4fd59792097a6b2fb949d41264386a7ecade469e Mon Sep 17 00:00:00 2001 +From: DENG Qingfang <dqf...@gmail.com> +Date: Mon, 25 Jan 2021 12:20:46 +0800 +Subject: [PATCH] net: ethernet: mediatek: support setting MTU + +MT762x HW, except for MT7628, supports frame length up to 2048 +(maximum length on GDM), so allow setting MTU up to 2030. + +Also set the default frame length to the hardware default 1518. + +Signed-off-by: DENG Qingfang <dqf...@gmail.com> +Reviewed-by: Andrew Lunn <and...@lunn.ch> +Link: https://lore.kernel.org/r/20210125042046.5599-1-dqf...@gmail.com +Signed-off-by: Jakub Kicinski <k...@kernel.org> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 43 ++++++++++++++++++--- + drivers/net/ethernet/mediatek/mtk_eth_soc.h | 12 ++++-- + 2 files changed, 47 insertions(+), 8 deletions(-) + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -355,7 +355,7 @@ static void mtk_mac_config(struct phylin + /* Setup gmac */ + mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); + mcr_new = mcr_cur; +- mcr_new |= MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | ++ mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | + MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK; + + /* Only update control register when needed! */ +@@ -782,8 +782,8 @@ static void mtk_get_stats64(struct net_d + static inline int mtk_max_frag_size(int mtu) + { + /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ +- if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH) +- mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; ++ if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH_2K) ++ mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; + + return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); +@@ -794,7 +794,7 @@ static inline int mtk_max_buf_size(int f + int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); + +- WARN_ON(buf_size < MTK_MAX_RX_LENGTH); ++ WARN_ON(buf_size < MTK_MAX_RX_LENGTH_2K); + + return buf_size; + } +@@ -2606,6 +2606,35 @@ static void mtk_uninit(struct net_device + mtk_rx_irq_disable(eth, ~0); + } + ++static int mtk_change_mtu(struct net_device *dev, int new_mtu) ++{ ++ int length = new_mtu + MTK_RX_ETH_HLEN; ++ struct mtk_mac *mac = netdev_priv(dev); ++ struct mtk_eth *eth = mac->hw; ++ u32 mcr_cur, mcr_new; ++ ++ if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { ++ mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); ++ mcr_new = mcr_cur & ~MAC_MCR_MAX_RX_MASK; ++ ++ if (length <= 1518) ++ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1518); ++ else if (length <= 1536) ++ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1536); ++ else if (length <= 1552) ++ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1552); ++ else ++ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_2048); ++ ++ if (mcr_new != mcr_cur) ++ mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id)); ++ } ++ ++ dev->mtu = new_mtu; ++ ++ return 0; ++} ++ + static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) + { + struct mtk_mac *mac = netdev_priv(dev); +@@ -2902,6 +2931,7 @@ static const struct net_device_ops mtk_n + .ndo_set_mac_address = mtk_set_mac_address, + .ndo_validate_addr = eth_validate_addr, + .ndo_do_ioctl = mtk_do_ioctl, ++ .ndo_change_mtu = mtk_change_mtu, + .ndo_tx_timeout = mtk_tx_timeout, + .ndo_get_stats64 = mtk_get_stats64, + .ndo_fix_features = mtk_fix_features, +@@ -3004,7 +3034,10 @@ static int mtk_add_mac(struct mtk_eth *e + eth->netdev[id]->irq = eth->irq[0]; + eth->netdev[id]->dev.of_node = np; + +- eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; ++ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) ++ eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; ++ else ++ eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; + + return 0; + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h +@@ -20,12 +20,13 @@ + #include "mtk_ppe.h" + + #define MTK_QDMA_PAGE_SIZE 2048 +-#define MTK_MAX_RX_LENGTH 1536 ++#define MTK_MAX_RX_LENGTH 1536 ++#define MTK_MAX_RX_LENGTH_2K 2048 + #define MTK_TX_DMA_BUF_LEN 0x3fff + #define MTK_DMA_SIZE 512 + #define MTK_NAPI_WEIGHT 64 + #define MTK_MAC_COUNT 2 +-#define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN) ++#define MTK_RX_ETH_HLEN (ETH_HLEN + ETH_FCS_LEN) + #define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN) + #define MTK_DMA_DUMMY_DESC 0xffffffff + #define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \ +@@ -352,7 +353,12 @@ + + /* Mac control registers */ + #define MTK_MAC_MCR(x) (0x10100 + (x * 0x100)) +-#define MAC_MCR_MAX_RX_1536 BIT(24) ++#define MAC_MCR_MAX_RX_MASK GENMASK(25, 24) ++#define MAC_MCR_MAX_RX(_x) (MAC_MCR_MAX_RX_MASK & ((_x) << 24)) ++#define MAC_MCR_MAX_RX_1518 0x0 ++#define MAC_MCR_MAX_RX_1536 0x1 ++#define MAC_MCR_MAX_RX_1552 0x2 ++#define MAC_MCR_MAX_RX_2048 0x3 + #define MAC_MCR_IPG_CFG (BIT(18) | BIT(16)) + #define MAC_MCR_FORCE_MODE BIT(15) + #define MAC_MCR_TX_EN BIT(14) diff --git a/target/linux/generic/backport-5.10/762-v5.11-net-dsa-mt7530-support-setting-MTU.patch b/target/linux/generic/backport-5.10/762-v5.11-net-dsa-mt7530-support-setting-MTU.patch new file mode 100644 index 0000000000..eb487cdfb5 --- /dev/null +++ b/target/linux/generic/backport-5.10/762-v5.11-net-dsa-mt7530-support-setting-MTU.patch @@ -0,0 +1,112 @@ +From 9470174e7581e75a8ebd78964997314dfc2e706c Mon Sep 17 00:00:00 2001 +From: DENG Qingfang <dqf...@gmail.com> +Date: Tue, 3 Nov 2020 13:06:18 +0800 +Subject: [PATCH] net: dsa: mt7530: support setting MTU + +MT7530/7531 has a global RX packet length register, which can be used +to set MTU. + +Supported packet length values are 1522 (1518 if untagged), 1536, +1552, and multiple of 1024 (from 2048 to 15360). + +Signed-off-by: DENG Qingfang <dqf...@gmail.com> +Link: https://lore.kernel.org/r/20201103050618.11419-1-dqf...@gmail.com +Signed-off-by: Jakub Kicinski <k...@kernel.org> +--- + drivers/net/dsa/mt7530.c | 49 ++++++++++++++++++++++++++++++++++++++++ + drivers/net/dsa/mt7530.h | 12 ++++++++++ + 2 files changed, 61 insertions(+) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1015,6 +1015,53 @@ mt7530_port_disable(struct dsa_switch *d + mutex_unlock(&priv->reg_mutex); + } + ++static int ++mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu) ++{ ++ struct mt7530_priv *priv = ds->priv; ++ struct mii_bus *bus = priv->bus; ++ int length; ++ u32 val; ++ ++ /* When a new MTU is set, DSA always set the CPU port's MTU to the ++ * largest MTU of the slave ports. Because the switch only has a global ++ * RX length register, only allowing CPU port here is enough. ++ */ ++ if (!dsa_is_cpu_port(ds, port)) ++ return 0; ++ ++ mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); ++ ++ val = mt7530_mii_read(priv, MT7530_GMACCR); ++ val &= ~MAX_RX_PKT_LEN_MASK; ++ ++ /* RX length also includes Ethernet header, MTK tag, and FCS length */ ++ length = new_mtu + ETH_HLEN + MTK_HDR_LEN + ETH_FCS_LEN; ++ if (length <= 1522) { ++ val |= MAX_RX_PKT_LEN_1522; ++ } else if (length <= 1536) { ++ val |= MAX_RX_PKT_LEN_1536; ++ } else if (length <= 1552) { ++ val |= MAX_RX_PKT_LEN_1552; ++ } else { ++ val &= ~MAX_RX_JUMBO_MASK; ++ val |= MAX_RX_JUMBO(DIV_ROUND_UP(length, 1024)); ++ val |= MAX_RX_PKT_LEN_JUMBO; ++ } ++ ++ mt7530_mii_write(priv, MT7530_GMACCR, val); ++ ++ mutex_unlock(&bus->mdio_lock); ++ ++ return 0; ++} ++ ++static int ++mt7530_port_max_mtu(struct dsa_switch *ds, int port) ++{ ++ return MT7530_MAX_MTU; ++} ++ + static void + mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state) + { +@@ -2652,6 +2699,8 @@ static const struct dsa_switch_ops mt753 + .get_sset_count = mt7530_get_sset_count, + .port_enable = mt7530_port_enable, + .port_disable = mt7530_port_disable, ++ .port_change_mtu = mt7530_port_change_mtu, ++ .port_max_mtu = mt7530_port_max_mtu, + .port_stp_state_set = mt7530_stp_state_set, + .port_bridge_join = mt7530_port_bridge_join, + .port_bridge_leave = mt7530_port_bridge_leave, +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -11,6 +11,9 @@ + #define MT7530_NUM_FDB_RECORDS 2048 + #define MT7530_ALL_MEMBERS 0xff + ++#define MTK_HDR_LEN 4 ++#define MT7530_MAX_MTU (15 * 1024 - ETH_HLEN - ETH_FCS_LEN - MTK_HDR_LEN) ++ + enum mt753x_id { + ID_MT7530 = 0, + ID_MT7621 = 1, +@@ -301,6 +304,15 @@ enum mt7530_vlan_port_attr { + #define MT7531_DBG_CNT(x) (0x3018 + (x) * 0x100) + #define MT7531_DIS_CLR BIT(31) + ++#define MT7530_GMACCR 0x30e0 ++#define MAX_RX_JUMBO(x) ((x) << 2) ++#define MAX_RX_JUMBO_MASK GENMASK(5, 2) ++#define MAX_RX_PKT_LEN_MASK GENMASK(1, 0) ++#define MAX_RX_PKT_LEN_1522 0x0 ++#define MAX_RX_PKT_LEN_1536 0x1 ++#define MAX_RX_PKT_LEN_1552 0x2 ++#define MAX_RX_PKT_LEN_JUMBO 0x3 ++ + /* Register for MIB */ + #define MT7530_PORT_MIB_COUNTER(x) (0x4000 + (x) * 0x100) + #define MT7530_MIB_CCR 0x4fe0 diff --git a/target/linux/generic/backport-5.10/763-v5.11-net-dsa-mt7530-enable-MTU-normalization.patch b/target/linux/generic/backport-5.10/763-v5.11-net-dsa-mt7530-enable-MTU-normalization.patch new file mode 100644 index 0000000000..b0ad7b9f87 --- /dev/null +++ b/target/linux/generic/backport-5.10/763-v5.11-net-dsa-mt7530-enable-MTU-normalization.patch @@ -0,0 +1,36 @@ +From 771c8901568dd8776a260aa93db41be88a60389e Mon Sep 17 00:00:00 2001 +From: DENG Qingfang <dqf...@gmail.com> +Date: Fri, 11 Dec 2020 01:03:22 +0800 +Subject: [PATCH] net: dsa: mt7530: enable MTU normalization + +MT7530 has a global RX length register, so we are actually changing its +MRU. +Enable MTU normalization for this reason. + +Signed-off-by: DENG Qingfang <dqf...@gmail.com> +Acked-by: Landen Chao <landen.c...@mediatek.com> +Reviewed-by: Vladimir Oltean <olte...@gmail.com> +Link: https://lore.kernel.org/r/20201210170322.3433-1-dqf...@gmail.com +Signed-off-by: Jakub Kicinski <k...@kernel.org> +--- + drivers/net/dsa/mt7530.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1703,6 +1703,7 @@ mt7530_setup(struct dsa_switch *ds) + */ + dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent; + ds->configure_vlan_while_not_filtering = true; ++ ds->mtu_enforcement_ingress = true; + + if (priv->id == ID_MT7530) { + regulator_set_voltage(priv->core_pwr, 1000000, 1000000); +@@ -1947,6 +1948,7 @@ mt7531_setup(struct dsa_switch *ds) + } + + ds->configure_vlan_while_not_filtering = true; ++ ds->mtu_enforcement_ingress = true; + + /* Flush the FDB table */ + ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL); -- 2.25.1 _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
