From: Alvin Zhang Date: Wed, 15 Apr 2020 08:48:08 +0000 (+0800) Subject: net/igc: support VLAN X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5f266d0d8c6decb07fef3d6a6f828bcc75f5fefe;p=dpdk.git net/igc: support VLAN Below ops ware added: vlan_filter_set vlan_offload_set vlan_tpid_set vlan_strip_queue_set Signed-off-by: Alvin Zhang Reviewed-by: Ferruh Yigit --- diff --git a/doc/guides/nics/features/igc.ini b/doc/guides/nics/features/igc.ini index 23434af4eb..5bc901f9c0 100644 --- a/doc/guides/nics/features/igc.ini +++ b/doc/guides/nics/features/igc.ini @@ -30,6 +30,8 @@ Rx interrupt = Y Flow control = Y RSS key update = Y RSS reta update = Y +VLAN filter = Y +VLAN offload = Y Linux UIO = Y Linux VFIO = Y x86-64 = Y diff --git a/doc/guides/nics/igc.rst b/doc/guides/nics/igc.rst index 358aec2728..389c7804c4 100644 --- a/doc/guides/nics/igc.rst +++ b/doc/guides/nics/igc.rst @@ -40,3 +40,38 @@ Foxville LM (I225 LM): Client 2.5G LAN vPro Corporate Foxville V (I225 V): Client 2.5G LAN Consumer Foxville I (I225 I): Client 2.5G Industrial Temp Foxville V (I225 K): Client 2.5G LAN Consumer + + +Sample Application Notes +------------------------ + +Vlan filter +~~~~~~~~~~~ + +VLAN stripping off only works with inner vlan. +Only the outer VLAN TPID can be set to a vlan other than 0x8100. + +If extend VLAN is enabled: + +- The VLAN header in a packet that carries a single VLAN header is treated as the external VLAN. + +- Foxville expects that any transmitted packet to have at least the external VLAN added by the + software. For those packets where an external VLAN is not present, any offload that relates to + inner fields to the EtherType might not be provided. + +- If VLAN TX-OFFLOAD is enabled and the packet does not contain an external VLAN, the packet is + dropped, and if configured, the queue from which the packet was sent is disabled. + +To start ``testpmd``, add vlan 10 to port, set vlan stripping off on, set extend on, set TPID of +outer VLAN to 0x9100: + +.. code-block:: console + + ./app/testpmd -l 4-8 -- -i + ... + + testpmd> vlan set filter on 0 + testpmd> rx_vlan add 10 0 + testpmd> vlan set strip off 0 + testpmd> vlan set extend on 0 + testpmd> vlan set outer tpid 0x9100 0 diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c index 78364a58a0..15b63d1fd3 100644 --- a/drivers/net/igc/igc_ethdev.c +++ b/drivers/net/igc/igc_ethdev.c @@ -50,6 +50,10 @@ /* External VLAN Enable bit mask */ #define IGC_CTRL_EXT_EXT_VLAN (1u << 26) +/* External VLAN Ether Type bit mask and shift */ +#define IGC_VET_EXT 0xFFFF0000 +#define IGC_VET_EXT_SHIFT 16 + /* Per Queue Good Packets Received Count */ #define IGC_PQGPRC(idx) (0x10010 + 0x100 * (idx)) /* Per Queue Good Octets Received Count */ @@ -227,6 +231,11 @@ static int eth_igc_rss_hash_update(struct rte_eth_dev *dev, struct rte_eth_rss_conf *rss_conf); static int eth_igc_rss_hash_conf_get(struct rte_eth_dev *dev, struct rte_eth_rss_conf *rss_conf); +static int +eth_igc_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on); +static int eth_igc_vlan_offload_set(struct rte_eth_dev *dev, int mask); +static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev, + enum rte_vlan_type vlan_type, uint16_t tpid); static const struct eth_dev_ops eth_igc_ops = { .dev_configure = eth_igc_configure, @@ -279,6 +288,10 @@ static const struct eth_dev_ops eth_igc_ops = { .reta_query = eth_igc_rss_reta_query, .rss_hash_update = eth_igc_rss_hash_update, .rss_hash_conf_get = eth_igc_rss_hash_conf_get, + .vlan_filter_set = eth_igc_vlan_filter_set, + .vlan_offload_set = eth_igc_vlan_offload_set, + .vlan_tpid_set = eth_igc_vlan_tpid_set, + .vlan_strip_queue_set = eth_igc_vlan_strip_queue_set, }; /* @@ -950,6 +963,11 @@ eth_igc_start(struct rte_eth_dev *dev) igc_clear_hw_cntrs_base_generic(hw); + /* VLAN Offload Settings */ + eth_igc_vlan_offload_set(dev, + ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK | + ETH_VLAN_EXTEND_MASK); + /* Setup link speed and duplex */ speeds = &dev->data->dev_conf.link_speeds; if (*speeds == ETH_LINK_SPEED_AUTONEG) { @@ -1443,6 +1461,7 @@ eth_igc_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->max_mac_addrs = hw->mac.rar_entry_count; dev_info->rx_offload_capa = IGC_RX_OFFLOAD_ALL; dev_info->tx_offload_capa = IGC_TX_OFFLOAD_ALL; + dev_info->rx_queue_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; dev_info->max_rx_queues = IGC_QUEUE_PAIRS_NUM; dev_info->max_tx_queues = IGC_QUEUE_PAIRS_NUM; @@ -2358,6 +2377,192 @@ eth_igc_rss_hash_conf_get(struct rte_eth_dev *dev, return 0; } +static int +eth_igc_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + struct igc_vfta *shadow_vfta = IGC_DEV_PRIVATE_VFTA(dev); + uint32_t vfta; + uint32_t vid_idx; + uint32_t vid_bit; + + vid_idx = (vlan_id >> IGC_VFTA_ENTRY_SHIFT) & IGC_VFTA_ENTRY_MASK; + vid_bit = 1u << (vlan_id & IGC_VFTA_ENTRY_BIT_SHIFT_MASK); + vfta = shadow_vfta->vfta[vid_idx]; + if (on) + vfta |= vid_bit; + else + vfta &= ~vid_bit; + IGC_WRITE_REG_ARRAY(hw, IGC_VFTA, vid_idx, vfta); + + /* update local VFTA copy */ + shadow_vfta->vfta[vid_idx] = vfta; + + return 0; +} + +static void +igc_vlan_hw_filter_disable(struct rte_eth_dev *dev) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + igc_read_reg_check_clear_bits(hw, IGC_RCTL, + IGC_RCTL_CFIEN | IGC_RCTL_VFE); +} + +static void +igc_vlan_hw_filter_enable(struct rte_eth_dev *dev) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + struct igc_vfta *shadow_vfta = IGC_DEV_PRIVATE_VFTA(dev); + uint32_t reg_val; + int i; + + /* Filter Table Enable, CFI not used for packet acceptance */ + reg_val = IGC_READ_REG(hw, IGC_RCTL); + reg_val &= ~IGC_RCTL_CFIEN; + reg_val |= IGC_RCTL_VFE; + IGC_WRITE_REG(hw, IGC_RCTL, reg_val); + + /* restore VFTA table */ + for (i = 0; i < IGC_VFTA_SIZE; i++) + IGC_WRITE_REG_ARRAY(hw, IGC_VFTA, i, shadow_vfta->vfta[i]); +} + +static void +igc_vlan_hw_strip_disable(struct rte_eth_dev *dev) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + + igc_read_reg_check_clear_bits(hw, IGC_CTRL, IGC_CTRL_VME); +} + +static void +igc_vlan_hw_strip_enable(struct rte_eth_dev *dev) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + + igc_read_reg_check_set_bits(hw, IGC_CTRL, IGC_CTRL_VME); +} + +static int +igc_vlan_hw_extend_disable(struct rte_eth_dev *dev) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + uint32_t ctrl_ext; + + ctrl_ext = IGC_READ_REG(hw, IGC_CTRL_EXT); + + /* if extend vlan hasn't been enabled */ + if ((ctrl_ext & IGC_CTRL_EXT_EXT_VLAN) == 0) + return 0; + + if ((dev->data->dev_conf.rxmode.offloads & + DEV_RX_OFFLOAD_JUMBO_FRAME) == 0) + goto write_ext_vlan; + + /* Update maximum packet length */ + if (dev->data->dev_conf.rxmode.max_rx_pkt_len < + RTE_ETHER_MIN_MTU + VLAN_TAG_SIZE) { + PMD_DRV_LOG(ERR, "Maximum packet length %u error, min is %u", + dev->data->dev_conf.rxmode.max_rx_pkt_len, + VLAN_TAG_SIZE + RTE_ETHER_MIN_MTU); + return -EINVAL; + } + dev->data->dev_conf.rxmode.max_rx_pkt_len -= VLAN_TAG_SIZE; + IGC_WRITE_REG(hw, IGC_RLPML, + dev->data->dev_conf.rxmode.max_rx_pkt_len); + +write_ext_vlan: + IGC_WRITE_REG(hw, IGC_CTRL_EXT, ctrl_ext & ~IGC_CTRL_EXT_EXT_VLAN); + return 0; +} + +static int +igc_vlan_hw_extend_enable(struct rte_eth_dev *dev) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + uint32_t ctrl_ext; + + ctrl_ext = IGC_READ_REG(hw, IGC_CTRL_EXT); + + /* if extend vlan has been enabled */ + if (ctrl_ext & IGC_CTRL_EXT_EXT_VLAN) + return 0; + + if ((dev->data->dev_conf.rxmode.offloads & + DEV_RX_OFFLOAD_JUMBO_FRAME) == 0) + goto write_ext_vlan; + + /* Update maximum packet length */ + if (dev->data->dev_conf.rxmode.max_rx_pkt_len > + MAX_RX_JUMBO_FRAME_SIZE - VLAN_TAG_SIZE) { + PMD_DRV_LOG(ERR, "Maximum packet length %u error, max is %u", + dev->data->dev_conf.rxmode.max_rx_pkt_len + + VLAN_TAG_SIZE, MAX_RX_JUMBO_FRAME_SIZE); + return -EINVAL; + } + dev->data->dev_conf.rxmode.max_rx_pkt_len += VLAN_TAG_SIZE; + IGC_WRITE_REG(hw, IGC_RLPML, + dev->data->dev_conf.rxmode.max_rx_pkt_len); + +write_ext_vlan: + IGC_WRITE_REG(hw, IGC_CTRL_EXT, ctrl_ext | IGC_CTRL_EXT_EXT_VLAN); + return 0; +} + +static int +eth_igc_vlan_offload_set(struct rte_eth_dev *dev, int mask) +{ + struct rte_eth_rxmode *rxmode; + + rxmode = &dev->data->dev_conf.rxmode; + if (mask & ETH_VLAN_STRIP_MASK) { + if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP) + igc_vlan_hw_strip_enable(dev); + else + igc_vlan_hw_strip_disable(dev); + } + + if (mask & ETH_VLAN_FILTER_MASK) { + if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_FILTER) + igc_vlan_hw_filter_enable(dev); + else + igc_vlan_hw_filter_disable(dev); + } + + if (mask & ETH_VLAN_EXTEND_MASK) { + if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_EXTEND) + return igc_vlan_hw_extend_enable(dev); + else + return igc_vlan_hw_extend_disable(dev); + } + + return 0; +} + +static int +eth_igc_vlan_tpid_set(struct rte_eth_dev *dev, + enum rte_vlan_type vlan_type, + uint16_t tpid) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + uint32_t reg_val; + + /* only outer TPID of double VLAN can be configured*/ + if (vlan_type == ETH_VLAN_TYPE_OUTER) { + reg_val = IGC_READ_REG(hw, IGC_VET); + reg_val = (reg_val & (~IGC_VET_EXT)) | + ((uint32_t)tpid << IGC_VET_EXT_SHIFT); + IGC_WRITE_REG(hw, IGC_VET, reg_val); + + return 0; + } + + /* all other TPID values are read-only*/ + PMD_DRV_LOG(ERR, "Not supported"); + return -ENOTSUP; +} + static int eth_igc_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, struct rte_pci_device *pci_dev) diff --git a/drivers/net/igc/igc_ethdev.h b/drivers/net/igc/igc_ethdev.h index e8fd1b1e97..4b84127b32 100644 --- a/drivers/net/igc/igc_ethdev.h +++ b/drivers/net/igc/igc_ethdev.h @@ -17,6 +17,10 @@ extern "C" { #endif #define IGC_RSS_RDT_SIZD 128 + +/* VLAN filter table size */ +#define IGC_VFTA_SIZE 128 + #define IGC_QUEUE_PAIRS_NUM 4 #define IGC_HKEY_MAX_INDEX 10 @@ -54,6 +58,9 @@ extern "C" { #define IGC_TX_MAX_MTU_SEG UINT8_MAX #define IGC_RX_OFFLOAD_ALL ( \ + DEV_RX_OFFLOAD_VLAN_STRIP | \ + DEV_RX_OFFLOAD_VLAN_FILTER | \ + DEV_RX_OFFLOAD_VLAN_EXTEND | \ DEV_RX_OFFLOAD_IPV4_CKSUM | \ DEV_RX_OFFLOAD_UDP_CKSUM | \ DEV_RX_OFFLOAD_TCP_CKSUM | \ @@ -113,6 +120,11 @@ struct igc_hw_queue_stats { /* per transmit queue drop packet count */ }; +/* local vfta copy */ +struct igc_vfta { + uint32_t vfta[IGC_VFTA_SIZE]; +}; + /* * Structure to store private data for each driver instance (for each port). */ @@ -124,6 +136,7 @@ struct igc_adapter { int16_t rxq_stats_map[IGC_QUEUE_PAIRS_NUM]; struct igc_interrupt intr; + struct igc_vfta shadow_vfta; bool stopped; }; @@ -141,6 +154,9 @@ struct igc_adapter { #define IGC_DEV_PRIVATE_INTR(_dev) \ (&((struct igc_adapter *)(_dev)->data->dev_private)->intr) +#define IGC_DEV_PRIVATE_VFTA(_dev) \ + (&((struct igc_adapter *)(_dev)->data->dev_private)->shadow_vfta) + static inline void igc_read_reg_check_set_bits(struct igc_hw *hw, uint32_t reg, uint32_t bits) { diff --git a/drivers/net/igc/igc_txrx.c b/drivers/net/igc/igc_txrx.c index 3028a66b6f..3832484237 100644 --- a/drivers/net/igc/igc_txrx.c +++ b/drivers/net/igc/igc_txrx.c @@ -1162,6 +1162,16 @@ igc_rx_init(struct rte_eth_dev *dev) IGC_WRITE_REG(hw, IGC_RDH(rxq->reg_idx), 0); IGC_WRITE_REG(hw, IGC_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1); + + /* strip queue vlan offload */ + if (rxq->offloads & DEV_RX_OFFLOAD_VLAN_STRIP) { + uint32_t dvmolr; + dvmolr = IGC_READ_REG(hw, IGC_DVMOLR(rxq->queue_id)); + + /* If vlan been stripped off, the CRC is meaningless. */ + dvmolr |= IGC_DVMOLR_STRVLAN | IGC_DVMOLR_STRCRC; + IGC_WRITE_REG(hw, IGC_DVMOLR(rxq->reg_idx), dvmolr); + } } return 0; @@ -2107,3 +2117,31 @@ eth_igc_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, qinfo->conf.tx_thresh.wthresh = txq->wthresh; qinfo->conf.offloads = txq->offloads; } + +void +eth_igc_vlan_strip_queue_set(struct rte_eth_dev *dev, + uint16_t rx_queue_id, int on) +{ + struct igc_hw *hw = IGC_DEV_PRIVATE_HW(dev); + struct igc_rx_queue *rxq = dev->data->rx_queues[rx_queue_id]; + uint32_t reg_val; + + if (rx_queue_id >= IGC_QUEUE_PAIRS_NUM) { + PMD_DRV_LOG(ERR, "Queue index(%u) illegal, max is %u", + rx_queue_id, IGC_QUEUE_PAIRS_NUM - 1); + return; + } + + reg_val = IGC_READ_REG(hw, IGC_DVMOLR(rx_queue_id)); + if (on) { + /* If vlan been stripped off, the CRC is meaningless. */ + reg_val |= IGC_DVMOLR_STRVLAN | IGC_DVMOLR_STRCRC; + rxq->offloads |= DEV_RX_OFFLOAD_VLAN_STRIP; + } else { + reg_val &= ~(IGC_DVMOLR_STRVLAN | IGC_DVMOLR_HIDVLAN | + IGC_DVMOLR_STRCRC); + rxq->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP; + } + + IGC_WRITE_REG(hw, IGC_DVMOLR(rx_queue_id), reg_val); +} diff --git a/drivers/net/igc/igc_txrx.h b/drivers/net/igc/igc_txrx.h index 63b19f527d..dbda56c43a 100644 --- a/drivers/net/igc/igc_txrx.h +++ b/drivers/net/igc/igc_txrx.h @@ -44,7 +44,8 @@ void eth_igc_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, struct rte_eth_rxq_info *qinfo); void eth_igc_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, struct rte_eth_txq_info *qinfo); - +void eth_igc_vlan_strip_queue_set(struct rte_eth_dev *dev, + uint16_t rx_queue_id, int on); #ifdef __cplusplus } #endif