diff options
author | Gan, Yi Fang <yi.fang.gan@intel.com> | 2023-11-21 08:38:42 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2023-11-22 13:54:14 +0300 |
commit | 750011e239a50873251c16207b0fe78eabf8577e (patch) | |
tree | 94e16234cef54d99ec1193e91b83deec59fe0977 /drivers | |
parent | 36b20fcdd9663ced36d3aef96f0eff8eb79de4b8 (diff) | |
download | linux-750011e239a50873251c16207b0fe78eabf8577e.tar.xz |
net: stmmac: Add support for HW-accelerated VLAN stripping
Current implementation supports driver level VLAN tag stripping only.
The features is always on if CONFIG_VLAN_8021Q is enabled in kernel
config and is not user configurable.
This patch add support to MAC level VLAN tag stripping and can be
configured through ethtool. If the rx-vlan-offload is off, the VLAN tag
will be stripped by driver. If the rx-vlan-offload is on, the VLAN tag
will be stripped by MAC.
Command: ethtool -K <interface> rx-vlan-offload off | on
Signed-off-by: Lai Peter Jun Ann <jun.ann.lai@intel.com>
Signed-off-by: Gan, Yi Fang <yi.fang.gan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/common.h | 1 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 35 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c | 13 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/hwif.h | 15 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 28 |
5 files changed, 90 insertions, 2 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index e3f650e88f82..6b935922054d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -580,6 +580,7 @@ struct mac_device_info { u32 vlan_filter[32]; bool vlan_fail_q_en; u8 vlan_fail_q; + bool hw_vlan_en; }; struct stmmac_rx_routing { diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index c6ff1fa0e04d..5f35faf90963 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -1134,6 +1134,35 @@ static int dwmac4_config_l4_filter(struct mac_device_info *hw, u32 filter_no, return 0; } +static void dwmac4_rx_hw_vlan(struct mac_device_info *hw, + struct dma_desc *rx_desc, struct sk_buff *skb) +{ + if (hw->desc->get_rx_vlan_valid(rx_desc)) { + u16 vid = hw->desc->get_rx_vlan_tci(rx_desc); + + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); + } +} + +static void dwmac4_set_hw_vlan_mode(struct mac_device_info *hw) +{ + void __iomem *ioaddr = hw->pcsr; + u32 value = readl(ioaddr + GMAC_VLAN_TAG); + + value &= ~GMAC_VLAN_TAG_CTRL_EVLS_MASK; + + if (hw->hw_vlan_en) + /* Always strip VLAN on Receive */ + value |= GMAC_VLAN_TAG_STRIP_ALL; + else + /* Do not strip VLAN on Receive */ + value |= GMAC_VLAN_TAG_STRIP_NONE; + + /* Enable outer VLAN Tag in Rx DMA descriptor */ + value |= GMAC_VLAN_TAG_CTRL_EVLRXS; + writel(value, ioaddr + GMAC_VLAN_TAG); +} + const struct stmmac_ops dwmac4_ops = { .core_init = dwmac4_core_init, .phylink_get_caps = dwmac4_phylink_get_caps, @@ -1175,6 +1204,8 @@ const struct stmmac_ops dwmac4_ops = { .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, + .rx_hw_vlan = dwmac4_rx_hw_vlan, + .set_hw_vlan_mode = dwmac4_set_hw_vlan_mode, }; const struct stmmac_ops dwmac410_ops = { @@ -1224,6 +1255,8 @@ const struct stmmac_ops dwmac410_ops = { .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, + .rx_hw_vlan = dwmac4_rx_hw_vlan, + .set_hw_vlan_mode = dwmac4_set_hw_vlan_mode, }; const struct stmmac_ops dwmac510_ops = { @@ -1277,6 +1310,8 @@ const struct stmmac_ops dwmac510_ops = { .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, + .rx_hw_vlan = dwmac4_rx_hw_vlan, + .set_hw_vlan_mode = dwmac4_set_hw_vlan_mode, }; static u32 dwmac4_get_num_vlan(void __iomem *ioaddr) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c index 89a14084c611..1c5802e0d7f4 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c @@ -198,6 +198,17 @@ static int dwmac4_get_tx_ls(struct dma_desc *p) >> TDES3_LAST_DESCRIPTOR_SHIFT; } +static u16 dwmac4_wrback_get_rx_vlan_tci(struct dma_desc *p) +{ + return (le32_to_cpu(p->des0) & RDES0_VLAN_TAG_MASK); +} + +static bool dwmac4_wrback_get_rx_vlan_valid(struct dma_desc *p) +{ + return ((le32_to_cpu(p->des3) & RDES3_LAST_DESCRIPTOR) && + (le32_to_cpu(p->des3) & RDES3_RDES0_VALID)); +} + static int dwmac4_wrback_get_rx_frame_len(struct dma_desc *p, int rx_coe) { return (le32_to_cpu(p->des3) & RDES3_PACKET_SIZE_MASK); @@ -551,6 +562,8 @@ const struct stmmac_desc_ops dwmac4_desc_ops = { .set_tx_owner = dwmac4_set_tx_owner, .set_rx_owner = dwmac4_set_rx_owner, .get_tx_ls = dwmac4_get_tx_ls, + .get_rx_vlan_tci = dwmac4_wrback_get_rx_vlan_tci, + .get_rx_vlan_valid = dwmac4_wrback_get_rx_vlan_valid, .get_rx_frame_len = dwmac4_wrback_get_rx_frame_len, .enable_tx_timestamp = dwmac4_rd_enable_tx_timestamp, .get_tx_timestamp_status = dwmac4_wrback_get_tx_timestamp_status, diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h index b95d3e137813..1d424c9bf037 100644 --- a/drivers/net/ethernet/stmicro/stmmac/hwif.h +++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h @@ -56,6 +56,10 @@ struct stmmac_desc_ops { void (*set_tx_ic)(struct dma_desc *p); /* Last tx segment reports the transmit status */ int (*get_tx_ls)(struct dma_desc *p); + /* Get the tag of the descriptor */ + u16 (*get_rx_vlan_tci)(struct dma_desc *p); + /* Get the valid status of descriptor */ + bool (*get_rx_vlan_valid)(struct dma_desc *p); /* Return the transmit status looking at the TDES1 */ int (*tx_status)(struct stmmac_extra_stats *x, struct dma_desc *p, void __iomem *ioaddr); @@ -117,6 +121,10 @@ struct stmmac_desc_ops { stmmac_do_void_callback(__priv, desc, set_tx_ic, __args) #define stmmac_get_tx_ls(__priv, __args...) \ stmmac_do_callback(__priv, desc, get_tx_ls, __args) +#define stmmac_get_rx_vlan_tci(__priv, __args...) \ + stmmac_do_callback(__priv, desc, get_rx_vlan_tci, __args) +#define stmmac_get_rx_vlan_valid(__priv, __args...) \ + stmmac_do_callback(__priv, desc, get_rx_vlan_valid, __args) #define stmmac_tx_status(__priv, __args...) \ stmmac_do_callback(__priv, desc, tx_status, __args) #define stmmac_get_tx_len(__priv, __args...) \ @@ -388,6 +396,9 @@ struct stmmac_ops { void (*update_vlan_hash)(struct mac_device_info *hw, u32 hash, __le16 perfect_match, bool is_double); void (*enable_vlan)(struct mac_device_info *hw, u32 type); + void (*rx_hw_vlan)(struct mac_device_info *hw, struct dma_desc *rx_desc, + struct sk_buff *skb); + void (*set_hw_vlan_mode)(struct mac_device_info *hw); int (*add_hw_vlan_rx_fltr)(struct net_device *dev, struct mac_device_info *hw, __be16 proto, u16 vid); @@ -497,6 +508,10 @@ struct stmmac_ops { stmmac_do_void_callback(__priv, mac, update_vlan_hash, __args) #define stmmac_enable_vlan(__priv, __args...) \ stmmac_do_void_callback(__priv, mac, enable_vlan, __args) +#define stmmac_rx_hw_vlan(__priv, __args...) \ + stmmac_do_void_callback(__priv, mac, rx_hw_vlan, __args) +#define stmmac_set_hw_vlan_mode(__priv, __args...) \ + stmmac_do_void_callback(__priv, mac, set_hw_vlan_mode, __args) #define stmmac_add_hw_vlan_rx_fltr(__priv, __args...) \ stmmac_do_callback(__priv, mac, add_hw_vlan_rx_fltr, __args) #define stmmac_del_hw_vlan_rx_fltr(__priv, __args...) \ diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 97598c1497ea..8964fc8a955f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3469,6 +3469,8 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register) /* Start the ball rolling... */ stmmac_start_all_dma(priv); + stmmac_set_hw_vlan_mode(priv, priv->hw); + if (priv->dma_cap.fpesel) { stmmac_fpe_start_wq(priv); @@ -4993,7 +4995,12 @@ static void stmmac_dispatch_skb_zc(struct stmmac_priv *priv, u32 queue, } stmmac_get_rx_hwtstamp(priv, p, np, skb); - stmmac_rx_vlan(priv->dev, skb); + if (priv->hw->hw_vlan_en) + /* MAC level stripping. */ + stmmac_rx_hw_vlan(priv, priv->hw, p, skb); + else + /* Driver level stripping. */ + stmmac_rx_vlan(priv->dev, skb); skb->protocol = eth_type_trans(skb, priv->dev); if (unlikely(!coe)) @@ -5509,7 +5516,14 @@ drain_data: /* Got entire packet into SKB. Finish it. */ stmmac_get_rx_hwtstamp(priv, p, np, skb); - stmmac_rx_vlan(priv->dev, skb); + + if (priv->hw->hw_vlan_en) + /* MAC level stripping. */ + stmmac_rx_hw_vlan(priv, priv->hw, p, skb); + else + /* Driver level stripping. */ + stmmac_rx_vlan(priv->dev, skb); + skb->protocol = eth_type_trans(skb, priv->dev); if (unlikely(!coe)) @@ -5818,6 +5832,13 @@ static int stmmac_set_features(struct net_device *netdev, stmmac_enable_sph(priv, priv->ioaddr, sph_en, chan); } + if (features & NETIF_F_HW_VLAN_CTAG_RX) + priv->hw->hw_vlan_en = true; + else + priv->hw->hw_vlan_en = false; + + stmmac_set_hw_vlan_mode(priv, priv->hw); + return 0; } @@ -7509,6 +7530,9 @@ int stmmac_dvr_probe(struct device *device, #ifdef STMMAC_VLAN_TAG_USED /* Both mac100 and gmac support receive VLAN tag detection */ ndev->features |= NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX; + ndev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; + priv->hw->hw_vlan_en = true; + if (priv->dma_cap.vlhash) { ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; ndev->features |= NETIF_F_HW_VLAN_STAG_FILTER; |