From: Gagandeep Singh Date: Fri, 12 Apr 2019 12:29:05 +0000 (+0000) Subject: net/enetc: support MTU update and jumbo frames X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5d5589b0c858;p=dpdk.git net/enetc: support MTU update and jumbo frames Enable the jumbo frames and MTU update feature. Signed-off-by: Gagandeep Singh --- diff --git a/doc/guides/nics/enetc.rst b/doc/guides/nics/enetc.rst index ab13211a59..eeb07523d2 100644 --- a/doc/guides/nics/enetc.rst +++ b/doc/guides/nics/enetc.rst @@ -49,6 +49,7 @@ ENETC Features - Basic stats - Promiscuous - Multicast +- Jumbo packets NIC Driver (PMD) ~~~~~~~~~~~~~~~~ diff --git a/doc/guides/nics/features/enetc.ini b/doc/guides/nics/features/enetc.ini index 6b7bbfb3df..0eed2cb9b7 100644 --- a/doc/guides/nics/features/enetc.ini +++ b/doc/guides/nics/features/enetc.ini @@ -9,6 +9,8 @@ Link status = Y Basic stats = Y Promiscuous mode = Y Allmulticast mode = Y +MTU update = Y +Jumbo frame = Y Linux VFIO = Y ARMv8 = Y Usage doc = Y diff --git a/doc/guides/rel_notes/release_19_05.rst b/doc/guides/rel_notes/release_19_05.rst index 6039a177da..7e9a790f3f 100644 --- a/doc/guides/rel_notes/release_19_05.rst +++ b/doc/guides/rel_notes/release_19_05.rst @@ -150,6 +150,8 @@ New Features * Added SXGMII interface support * Added basic statistics support * Added promiscuous and allmulticast mode support + * Added MTU update support + * Added jumbo frame support * **Updated the QuickAssist Technology PMD.** diff --git a/drivers/net/enetc/base/enetc_hw.h b/drivers/net/enetc/base/enetc_hw.h index 90a383a8b6..2eb1df30ec 100644 --- a/drivers/net/enetc/base/enetc_hw.h +++ b/drivers/net/enetc/base/enetc_hw.h @@ -99,7 +99,11 @@ enum enetc_bdr_type {TX, RX}; #define ENETC_PM0_RX_EN BIT(1) #define ENETC_PM0_MAXFRM 0x08014 -#define ENETC_SET_MAXFRM(val) ((val) << 16) +#define ENETC_SET_TX_MTU(val) ((val) << 16) +#define ENETC_SET_MAXFRM(val) ((val) & 0xffff) +#define ENETC_PTXMBAR 0x0608 +/* n = TC index [0..7] */ +#define ENETC_PTCMSDUR(n) (0x2020 + (n) * 4) #define ENETC_PM0_STATUS 0x08304 #define ENETC_LINK_MODE 0x0000000000080000ULL diff --git a/drivers/net/enetc/enetc.h b/drivers/net/enetc/enetc.h index 56454dc9d0..e494eb8b8c 100644 --- a/drivers/net/enetc/enetc.h +++ b/drivers/net/enetc/enetc.h @@ -24,6 +24,11 @@ /* BD ALIGN */ #define BD_ALIGN 8 +/* minimum frame size supported */ +#define ENETC_MAC_MINFRM_SIZE 68 +/* maximum frame size supported */ +#define ENETC_MAC_MAXFRM_SIZE 9600 + /* * upper_32_bits - return bits 32-63 of a number * @n: the number we're accessing diff --git a/drivers/net/enetc/enetc_ethdev.c b/drivers/net/enetc/enetc_ethdev.c index a7dddc5cb5..66cbf74d0a 100644 --- a/drivers/net/enetc/enetc_ethdev.c +++ b/drivers/net/enetc/enetc_ethdev.c @@ -10,13 +10,6 @@ int enetc_logtype_pmd; -static int -enetc_dev_configure(struct rte_eth_dev *dev __rte_unused) -{ - PMD_INIT_FUNC_TRACE(); - return 0; -} - static int enetc_dev_start(struct rte_eth_dev *dev) { @@ -168,7 +161,8 @@ enetc_dev_infos_get(struct rte_eth_dev *dev __rte_unused, }; dev_info->max_rx_queues = MAX_RX_RINGS; dev_info->max_tx_queues = MAX_TX_RINGS; - dev_info->max_rx_pktlen = 1500; + dev_info->max_rx_pktlen = ENETC_MAC_MAXFRM_SIZE; + dev_info->rx_offload_capa = DEV_RX_OFFLOAD_JUMBO_FRAME; } static int @@ -597,6 +591,76 @@ enetc_allmulticast_disable(struct rte_eth_dev *dev) enetc_port_wr(enetc_hw, ENETC_PSIPMR, psipmr); } +static int +enetc_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) +{ + struct enetc_eth_hw *hw = + ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct enetc_hw *enetc_hw = &hw->hw; + uint32_t frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; + + /* check that mtu is within the allowed range */ + if (mtu < ENETC_MAC_MINFRM_SIZE || frame_size > ENETC_MAC_MAXFRM_SIZE) + return -EINVAL; + + /* + * Refuse mtu that requires the support of scattered packets + * when this feature has not been enabled before. + */ + if (dev->data->min_rx_buf_size && + !dev->data->scattered_rx && frame_size > + dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM) { + ENETC_PMD_ERR("SG not enabled, will not fit in one buffer"); + return -EINVAL; + } + + if (frame_size > ETHER_MAX_LEN) + dev->data->dev_conf.rxmode.offloads &= + DEV_RX_OFFLOAD_JUMBO_FRAME; + else + dev->data->dev_conf.rxmode.offloads &= + ~DEV_RX_OFFLOAD_JUMBO_FRAME; + + enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE); + enetc_port_wr(enetc_hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE); + + dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size; + + /*setting the MTU*/ + enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM, ENETC_SET_MAXFRM(frame_size) | + ENETC_SET_TX_MTU(ENETC_MAC_MAXFRM_SIZE)); + + return 0; +} + +static int +enetc_dev_configure(struct rte_eth_dev *dev) +{ + struct rte_eth_conf *eth_conf = &dev->data->dev_conf; + uint64_t rx_offloads = eth_conf->rxmode.offloads; + struct enetc_eth_hw *hw = + ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct enetc_hw *enetc_hw = &hw->hw; + + PMD_INIT_FUNC_TRACE(); + + if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) { + uint32_t max_len; + + max_len = dev->data->dev_conf.rxmode.max_rx_pkt_len; + + enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM, + ENETC_SET_MAXFRM(max_len)); + enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0), + ENETC_MAC_MAXFRM_SIZE); + enetc_port_wr(enetc_hw, ENETC_PTXMBAR, + 2 * ENETC_MAC_MAXFRM_SIZE); + dev->data->mtu = ETHER_MAX_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN; + } + + return 0; +} + /* * The set of PCI devices this driver supports */ @@ -620,6 +684,7 @@ static const struct eth_dev_ops enetc_ops = { .allmulticast_enable = enetc_allmulticast_enable, .allmulticast_disable = enetc_allmulticast_disable, .dev_infos_get = enetc_dev_infos_get, + .mtu_set = enetc_mtu_set, .rx_queue_setup = enetc_rx_queue_setup, .rx_queue_release = enetc_rx_queue_release, .tx_queue_setup = enetc_tx_queue_setup, @@ -674,6 +739,11 @@ enetc_dev_init(struct rte_eth_dev *eth_dev) ether_addr_copy((struct ether_addr *)hw->mac.addr, ð_dev->data->mac_addrs[0]); + /* Set MTU */ + enetc_port_wr(&hw->hw, ENETC_PM0_MAXFRM, + ENETC_SET_MAXFRM(ETHER_MAX_LEN)); + eth_dev->data->mtu = ETHER_MAX_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN; + ENETC_PMD_DEBUG("port_id %d vendorID=0x%x deviceID=0x%x", eth_dev->data->port_id, pci_dev->id.vendor_id, pci_dev->id.device_id);