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numam-dpdk/drivers/net/nfp/nfp_net.c
Alejandro Lucero 29a62d1476 net/nfp: add CPP bridge as service 
The Netronome's Network Flow Processor chip is highly programmable
with the goal of processing packets at high speed. Processing units
and other chip components are available from the host through the
PCIe CPP(Command Push Pull bus) interface. The NFP PF PMD configures
a CPP handler for setting up and working with vNICs, perform actions
like link up or down, or accessing extended stats from the MAC component.

There exist NFP host tools which access the NFP components for
programming and debugging but they require the CPP interface. When the
PMD is bound to the PF, the DPDK app owns the CPP interface, so these
host tools can not access the NFP through other means like NFP kernel
drivers.

This patch adds a CPP bridge using the rte_service API which can be
enabled by a DPDK app. Interestingly, DPDK clients like OVS will not
enable specific service cores, but this can be performed with a
secondary process specifically enabling this CPP bridge service and
therefore giving access to the NFP to those host tools.

Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
2019-01-14 22:57:33 +01:00

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/*
* Copyright (c) 2014-2018 Netronome Systems, Inc.
* All rights reserved.
*
* Small portions derived from code Copyright(c) 2010-2015 Intel Corporation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* vim:shiftwidth=8:noexpandtab
*
* @file dpdk/pmd/nfp_net.c
*
* Netronome vNIC DPDK Poll-Mode Driver: Main entry point
*/
#include <rte_byteorder.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_ethdev_driver.h>
#include <rte_ethdev_pci.h>
#include <rte_dev.h>
#include <rte_ether.h>
#include <rte_malloc.h>
#include <rte_memzone.h>
#include <rte_mempool.h>
#include <rte_version.h>
#include <rte_string_fns.h>
#include <rte_alarm.h>
#include <rte_spinlock.h>
#include <rte_service_component.h>
#include "nfpcore/nfp_cpp.h"
#include "nfpcore/nfp_nffw.h"
#include "nfpcore/nfp_hwinfo.h"
#include "nfpcore/nfp_mip.h"
#include "nfpcore/nfp_rtsym.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_net_pmd.h"
#include "nfp_net_logs.h"
#include "nfp_net_ctrl.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <errno.h>
/* Prototypes */
static void nfp_net_close(struct rte_eth_dev *dev);
static int nfp_net_configure(struct rte_eth_dev *dev);
static void nfp_net_dev_interrupt_handler(void *param);
static void nfp_net_dev_interrupt_delayed_handler(void *param);
static int nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
static void nfp_net_infos_get(struct rte_eth_dev *dev,
struct rte_eth_dev_info *dev_info);
static int nfp_net_init(struct rte_eth_dev *eth_dev);
static int nfp_net_link_update(struct rte_eth_dev *dev, int wait_to_complete);
static void nfp_net_promisc_enable(struct rte_eth_dev *dev);
static void nfp_net_promisc_disable(struct rte_eth_dev *dev);
static int nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq);
static uint32_t nfp_net_rx_queue_count(struct rte_eth_dev *dev,
uint16_t queue_idx);
static uint16_t nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
static void nfp_net_rx_queue_release(void *rxq);
static int nfp_net_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp);
static int nfp_net_tx_free_bufs(struct nfp_net_txq *txq);
static void nfp_net_tx_queue_release(void *txq);
static int nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_txconf *tx_conf);
static int nfp_net_start(struct rte_eth_dev *dev);
static int nfp_net_stats_get(struct rte_eth_dev *dev,
struct rte_eth_stats *stats);
static void nfp_net_stats_reset(struct rte_eth_dev *dev);
static void nfp_net_stop(struct rte_eth_dev *dev);
static uint16_t nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
static int nfp_net_rss_config_default(struct rte_eth_dev *dev);
static int nfp_net_rss_hash_update(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf);
static int nfp_net_rss_reta_write(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size);
static int nfp_net_rss_hash_write(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf);
static int nfp_set_mac_addr(struct rte_eth_dev *dev,
struct ether_addr *mac_addr);
/* The offset of the queue controller queues in the PCIe Target */
#define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))
/* Maximum value which can be added to a queue with one transaction */
#define NFP_QCP_MAX_ADD 0x7f
#define RTE_MBUF_DMA_ADDR_DEFAULT(mb) \
(uint64_t)((mb)->buf_iova + RTE_PKTMBUF_HEADROOM)
/* nfp_qcp_ptr - Read or Write Pointer of a queue */
enum nfp_qcp_ptr {
NFP_QCP_READ_PTR = 0,
NFP_QCP_WRITE_PTR
};
/*
* nfp_qcp_ptr_add - Add the value to the selected pointer of a queue
* @q: Base address for queue structure
* @ptr: Add to the Read or Write pointer
* @val: Value to add to the queue pointer
*
* If @val is greater than @NFP_QCP_MAX_ADD multiple writes are performed.
*/
static inline void
nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)
{
uint32_t off;
if (ptr == NFP_QCP_READ_PTR)
off = NFP_QCP_QUEUE_ADD_RPTR;
else
off = NFP_QCP_QUEUE_ADD_WPTR;
while (val > NFP_QCP_MAX_ADD) {
nn_writel(rte_cpu_to_le_32(NFP_QCP_MAX_ADD), q + off);
val -= NFP_QCP_MAX_ADD;
}
nn_writel(rte_cpu_to_le_32(val), q + off);
}
/*
* nfp_qcp_read - Read the current Read/Write pointer value for a queue
* @q: Base address for queue structure
* @ptr: Read or Write pointer
*/
static inline uint32_t
nfp_qcp_read(uint8_t *q, enum nfp_qcp_ptr ptr)
{
uint32_t off;
uint32_t val;
if (ptr == NFP_QCP_READ_PTR)
off = NFP_QCP_QUEUE_STS_LO;
else
off = NFP_QCP_QUEUE_STS_HI;
val = rte_cpu_to_le_32(nn_readl(q + off));
if (ptr == NFP_QCP_READ_PTR)
return val & NFP_QCP_QUEUE_STS_LO_READPTR_mask;
else
return val & NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask;
}
/*
* Functions to read/write from/to Config BAR
* Performs any endian conversion necessary.
*/
static inline uint8_t
nn_cfg_readb(struct nfp_net_hw *hw, int off)
{
return nn_readb(hw->ctrl_bar + off);
}
static inline void
nn_cfg_writeb(struct nfp_net_hw *hw, int off, uint8_t val)
{
nn_writeb(val, hw->ctrl_bar + off);
}
static inline uint32_t
nn_cfg_readl(struct nfp_net_hw *hw, int off)
{
return rte_le_to_cpu_32(nn_readl(hw->ctrl_bar + off));
}
static inline void
nn_cfg_writel(struct nfp_net_hw *hw, int off, uint32_t val)
{
nn_writel(rte_cpu_to_le_32(val), hw->ctrl_bar + off);
}
static inline uint64_t
nn_cfg_readq(struct nfp_net_hw *hw, int off)
{
return rte_le_to_cpu_64(nn_readq(hw->ctrl_bar + off));
}
static inline void
nn_cfg_writeq(struct nfp_net_hw *hw, int off, uint64_t val)
{
nn_writeq(rte_cpu_to_le_64(val), hw->ctrl_bar + off);
}
static void
nfp_net_rx_queue_release_mbufs(struct nfp_net_rxq *rxq)
{
unsigned i;
if (rxq->rxbufs == NULL)
return;
for (i = 0; i < rxq->rx_count; i++) {
if (rxq->rxbufs[i].mbuf) {
rte_pktmbuf_free_seg(rxq->rxbufs[i].mbuf);
rxq->rxbufs[i].mbuf = NULL;
}
}
}
static void
nfp_net_rx_queue_release(void *rx_queue)
{
struct nfp_net_rxq *rxq = rx_queue;
if (rxq) {
nfp_net_rx_queue_release_mbufs(rxq);
rte_free(rxq->rxbufs);
rte_free(rxq);
}
}
static void
nfp_net_reset_rx_queue(struct nfp_net_rxq *rxq)
{
nfp_net_rx_queue_release_mbufs(rxq);
rxq->rd_p = 0;
rxq->nb_rx_hold = 0;
}
static void
nfp_net_tx_queue_release_mbufs(struct nfp_net_txq *txq)
{
unsigned i;
if (txq->txbufs == NULL)
return;
for (i = 0; i < txq->tx_count; i++) {
if (txq->txbufs[i].mbuf) {
rte_pktmbuf_free_seg(txq->txbufs[i].mbuf);
txq->txbufs[i].mbuf = NULL;
}
}
}
static void
nfp_net_tx_queue_release(void *tx_queue)
{
struct nfp_net_txq *txq = tx_queue;
if (txq) {
nfp_net_tx_queue_release_mbufs(txq);
rte_free(txq->txbufs);
rte_free(txq);
}
}
static void
nfp_net_reset_tx_queue(struct nfp_net_txq *txq)
{
nfp_net_tx_queue_release_mbufs(txq);
txq->wr_p = 0;
txq->rd_p = 0;
}
static int
__nfp_net_reconfig(struct nfp_net_hw *hw, uint32_t update)
{
int cnt;
uint32_t new;
struct timespec wait;
PMD_DRV_LOG(DEBUG, "Writing to the configuration queue (%p)...",
hw->qcp_cfg);
if (hw->qcp_cfg == NULL)
rte_panic("Bad configuration queue pointer\n");
nfp_qcp_ptr_add(hw->qcp_cfg, NFP_QCP_WRITE_PTR, 1);
wait.tv_sec = 0;
wait.tv_nsec = 1000000;
PMD_DRV_LOG(DEBUG, "Polling for update ack...");
/* Poll update field, waiting for NFP to ack the config */
for (cnt = 0; ; cnt++) {
new = nn_cfg_readl(hw, NFP_NET_CFG_UPDATE);
if (new == 0)
break;
if (new & NFP_NET_CFG_UPDATE_ERR) {
PMD_INIT_LOG(ERR, "Reconfig error: 0x%08x", new);
return -1;
}
if (cnt >= NFP_NET_POLL_TIMEOUT) {
PMD_INIT_LOG(ERR, "Reconfig timeout for 0x%08x after"
" %dms", update, cnt);
rte_panic("Exiting\n");
}
nanosleep(&wait, 0); /* waiting for a 1ms */
}
PMD_DRV_LOG(DEBUG, "Ack DONE");
return 0;
}
/*
* Reconfigure the NIC
* @nn: device to reconfigure
* @ctrl: The value for the ctrl field in the BAR config
* @update: The value for the update field in the BAR config
*
* Write the update word to the BAR and ping the reconfig queue. Then poll
* until the firmware has acknowledged the update by zeroing the update word.
*/
static int
nfp_net_reconfig(struct nfp_net_hw *hw, uint32_t ctrl, uint32_t update)
{
uint32_t err;
PMD_DRV_LOG(DEBUG, "nfp_net_reconfig: ctrl=%08x update=%08x",
ctrl, update);
rte_spinlock_lock(&hw->reconfig_lock);
nn_cfg_writel(hw, NFP_NET_CFG_CTRL, ctrl);
nn_cfg_writel(hw, NFP_NET_CFG_UPDATE, update);
rte_wmb();
err = __nfp_net_reconfig(hw, update);
rte_spinlock_unlock(&hw->reconfig_lock);
if (!err)
return 0;
/*
* Reconfig errors imply situations where they can be handled.
* Otherwise, rte_panic is called inside __nfp_net_reconfig
*/
PMD_INIT_LOG(ERR, "Error nfp_net reconfig for ctrl: %x update: %x",
ctrl, update);
return -EIO;
}
/*
* Configure an Ethernet device. This function must be invoked first
* before any other function in the Ethernet API. This function can
* also be re-invoked when a device is in the stopped state.
*/
static int
nfp_net_configure(struct rte_eth_dev *dev)
{
struct rte_eth_conf *dev_conf;
struct rte_eth_rxmode *rxmode;
struct rte_eth_txmode *txmode;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
/*
* A DPDK app sends info about how many queues to use and how
* those queues need to be configured. This is used by the
* DPDK core and it makes sure no more queues than those
* advertised by the driver are requested. This function is
* called after that internal process
*/
PMD_INIT_LOG(DEBUG, "Configure");
dev_conf = &dev->data->dev_conf;
rxmode = &dev_conf->rxmode;
txmode = &dev_conf->txmode;
/* Checking TX mode */
if (txmode->mq_mode) {
PMD_INIT_LOG(INFO, "TX mq_mode DCB and VMDq not supported");
return -EINVAL;
}
/* Checking RX mode */
if (rxmode->mq_mode & ETH_MQ_RX_RSS &&
!(hw->cap & NFP_NET_CFG_CTRL_RSS)) {
PMD_INIT_LOG(INFO, "RSS not supported");
return -EINVAL;
}
return 0;
}
static void
nfp_net_enable_queues(struct rte_eth_dev *dev)
{
struct nfp_net_hw *hw;
uint64_t enabled_queues = 0;
int i;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
/* Enabling the required TX queues in the device */
for (i = 0; i < dev->data->nb_tx_queues; i++)
enabled_queues |= (1 << i);
nn_cfg_writeq(hw, NFP_NET_CFG_TXRS_ENABLE, enabled_queues);
enabled_queues = 0;
/* Enabling the required RX queues in the device */
for (i = 0; i < dev->data->nb_rx_queues; i++)
enabled_queues |= (1 << i);
nn_cfg_writeq(hw, NFP_NET_CFG_RXRS_ENABLE, enabled_queues);
}
static void
nfp_net_disable_queues(struct rte_eth_dev *dev)
{
struct nfp_net_hw *hw;
uint32_t new_ctrl, update = 0;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
nn_cfg_writeq(hw, NFP_NET_CFG_TXRS_ENABLE, 0);
nn_cfg_writeq(hw, NFP_NET_CFG_RXRS_ENABLE, 0);
new_ctrl = hw->ctrl & ~NFP_NET_CFG_CTRL_ENABLE;
update = NFP_NET_CFG_UPDATE_GEN | NFP_NET_CFG_UPDATE_RING |
NFP_NET_CFG_UPDATE_MSIX;
if (hw->cap & NFP_NET_CFG_CTRL_RINGCFG)
new_ctrl &= ~NFP_NET_CFG_CTRL_RINGCFG;
/* If an error when reconfig we avoid to change hw state */
if (nfp_net_reconfig(hw, new_ctrl, update) < 0)
return;
hw->ctrl = new_ctrl;
}
static int
nfp_net_rx_freelist_setup(struct rte_eth_dev *dev)
{
int i;
for (i = 0; i < dev->data->nb_rx_queues; i++) {
if (nfp_net_rx_fill_freelist(dev->data->rx_queues[i]) < 0)
return -1;
}
return 0;
}
static void
nfp_net_params_setup(struct nfp_net_hw *hw)
{
nn_cfg_writel(hw, NFP_NET_CFG_MTU, hw->mtu);
nn_cfg_writel(hw, NFP_NET_CFG_FLBUFSZ, hw->flbufsz);
}
static void
nfp_net_cfg_queue_setup(struct nfp_net_hw *hw)
{
hw->qcp_cfg = hw->tx_bar + NFP_QCP_QUEUE_ADDR_SZ;
}
#define ETH_ADDR_LEN 6
static void
nfp_eth_copy_mac(uint8_t *dst, const uint8_t *src)
{
int i;
for (i = 0; i < ETH_ADDR_LEN; i++)
dst[i] = src[i];
}
static int
nfp_net_pf_read_mac(struct nfp_net_hw *hw, int port)
{
struct nfp_eth_table *nfp_eth_table;
nfp_eth_table = nfp_eth_read_ports(hw->cpp);
/*
* hw points to port0 private data. We need hw now pointing to
* right port.
*/
hw += port;
nfp_eth_copy_mac((uint8_t *)&hw->mac_addr,
(uint8_t *)&nfp_eth_table->ports[port].mac_addr);
free(nfp_eth_table);
return 0;
}
static void
nfp_net_vf_read_mac(struct nfp_net_hw *hw)
{
uint32_t tmp;
tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR));
memcpy(&hw->mac_addr[0], &tmp, 4);
tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR + 4));
memcpy(&hw->mac_addr[4], &tmp, 2);
}
static void
nfp_net_write_mac(struct nfp_net_hw *hw, uint8_t *mac)
{
uint32_t mac0 = *(uint32_t *)mac;
uint16_t mac1;
nn_writel(rte_cpu_to_be_32(mac0), hw->ctrl_bar + NFP_NET_CFG_MACADDR);
mac += 4;
mac1 = *(uint16_t *)mac;
nn_writew(rte_cpu_to_be_16(mac1),
hw->ctrl_bar + NFP_NET_CFG_MACADDR + 6);
}
int
nfp_set_mac_addr(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
{
struct nfp_net_hw *hw;
uint32_t update, ctrl;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if ((hw->ctrl & NFP_NET_CFG_CTRL_ENABLE) &&
!(hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR)) {
PMD_INIT_LOG(INFO, "MAC address unable to change when"
" port enabled");
return -EBUSY;
}
if ((hw->ctrl & NFP_NET_CFG_CTRL_ENABLE) &&
!(hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR))
return -EBUSY;
/* Writing new MAC to the specific port BAR address */
nfp_net_write_mac(hw, (uint8_t *)mac_addr);
/* Signal the NIC about the change */
update = NFP_NET_CFG_UPDATE_MACADDR;
ctrl = hw->ctrl | NFP_NET_CFG_CTRL_LIVE_ADDR;
if (nfp_net_reconfig(hw, ctrl, update) < 0) {
PMD_INIT_LOG(INFO, "MAC address update failed");
return -EIO;
}
return 0;
}
static int
nfp_configure_rx_interrupt(struct rte_eth_dev *dev,
struct rte_intr_handle *intr_handle)
{
struct nfp_net_hw *hw;
int i;
if (!intr_handle->intr_vec) {
intr_handle->intr_vec =
rte_zmalloc("intr_vec",
dev->data->nb_rx_queues * sizeof(int), 0);
if (!intr_handle->intr_vec) {
PMD_INIT_LOG(ERR, "Failed to allocate %d rx_queues"
" intr_vec", dev->data->nb_rx_queues);
return -ENOMEM;
}
}
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if (intr_handle->type == RTE_INTR_HANDLE_UIO) {
PMD_INIT_LOG(INFO, "VF: enabling RX interrupt with UIO");
/* UIO just supports one queue and no LSC*/
nn_cfg_writeb(hw, NFP_NET_CFG_RXR_VEC(0), 0);
intr_handle->intr_vec[0] = 0;
} else {
PMD_INIT_LOG(INFO, "VF: enabling RX interrupt with VFIO");
for (i = 0; i < dev->data->nb_rx_queues; i++) {
/*
* The first msix vector is reserved for non
* efd interrupts
*/
nn_cfg_writeb(hw, NFP_NET_CFG_RXR_VEC(i), i + 1);
intr_handle->intr_vec[i] = i + 1;
PMD_INIT_LOG(DEBUG, "intr_vec[%d]= %d", i,
intr_handle->intr_vec[i]);
}
}
/* Avoiding TX interrupts */
hw->ctrl |= NFP_NET_CFG_CTRL_MSIX_TX_OFF;
return 0;
}
static uint32_t
nfp_check_offloads(struct rte_eth_dev *dev)
{
struct nfp_net_hw *hw;
struct rte_eth_conf *dev_conf;
struct rte_eth_rxmode *rxmode;
struct rte_eth_txmode *txmode;
uint32_t ctrl = 0;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
dev_conf = &dev->data->dev_conf;
rxmode = &dev_conf->rxmode;
txmode = &dev_conf->txmode;
if (rxmode->offloads & DEV_RX_OFFLOAD_IPV4_CKSUM) {
if (hw->cap & NFP_NET_CFG_CTRL_RXCSUM)
ctrl |= NFP_NET_CFG_CTRL_RXCSUM;
}
if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP) {
if (hw->cap & NFP_NET_CFG_CTRL_RXVLAN)
ctrl |= NFP_NET_CFG_CTRL_RXVLAN;
}
if (rxmode->offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
hw->mtu = rxmode->max_rx_pkt_len;
if (txmode->offloads & DEV_TX_OFFLOAD_VLAN_INSERT)
ctrl |= NFP_NET_CFG_CTRL_TXVLAN;
/* L2 broadcast */
if (hw->cap & NFP_NET_CFG_CTRL_L2BC)
ctrl |= NFP_NET_CFG_CTRL_L2BC;
/* L2 multicast */
if (hw->cap & NFP_NET_CFG_CTRL_L2MC)
ctrl |= NFP_NET_CFG_CTRL_L2MC;
/* TX checksum offload */
if (txmode->offloads & DEV_TX_OFFLOAD_IPV4_CKSUM ||
txmode->offloads & DEV_TX_OFFLOAD_UDP_CKSUM ||
txmode->offloads & DEV_TX_OFFLOAD_TCP_CKSUM)
ctrl |= NFP_NET_CFG_CTRL_TXCSUM;
/* LSO offload */
if (txmode->offloads & DEV_TX_OFFLOAD_TCP_TSO) {
if (hw->cap & NFP_NET_CFG_CTRL_LSO)
ctrl |= NFP_NET_CFG_CTRL_LSO;
else
ctrl |= NFP_NET_CFG_CTRL_LSO2;
}
/* RX gather */
if (txmode->offloads & DEV_TX_OFFLOAD_MULTI_SEGS)
ctrl |= NFP_NET_CFG_CTRL_GATHER;
return ctrl;
}
static int
nfp_net_start(struct rte_eth_dev *dev)
{
struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
uint32_t new_ctrl, update = 0;
struct nfp_net_hw *hw;
struct rte_eth_conf *dev_conf;
struct rte_eth_rxmode *rxmode;
uint32_t intr_vector;
int ret;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
PMD_INIT_LOG(DEBUG, "Start");
/* Disabling queues just in case... */
nfp_net_disable_queues(dev);
/* Enabling the required queues in the device */
nfp_net_enable_queues(dev);
/* check and configure queue intr-vector mapping */
if (dev->data->dev_conf.intr_conf.rxq != 0) {
if (hw->pf_multiport_enabled) {
PMD_INIT_LOG(ERR, "PMD rx interrupt is not supported "
"with NFP multiport PF");
return -EINVAL;
}
if (intr_handle->type == RTE_INTR_HANDLE_UIO) {
/*
* Better not to share LSC with RX interrupts.
* Unregistering LSC interrupt handler
*/
rte_intr_callback_unregister(&pci_dev->intr_handle,
nfp_net_dev_interrupt_handler, (void *)dev);
if (dev->data->nb_rx_queues > 1) {
PMD_INIT_LOG(ERR, "PMD rx interrupt only "
"supports 1 queue with UIO");
return -EIO;
}
}
intr_vector = dev->data->nb_rx_queues;
if (rte_intr_efd_enable(intr_handle, intr_vector))
return -1;
nfp_configure_rx_interrupt(dev, intr_handle);
update = NFP_NET_CFG_UPDATE_MSIX;
}
rte_intr_enable(intr_handle);
new_ctrl = nfp_check_offloads(dev);
/* Writing configuration parameters in the device */
nfp_net_params_setup(hw);
dev_conf = &dev->data->dev_conf;
rxmode = &dev_conf->rxmode;
if (rxmode->mq_mode & ETH_MQ_RX_RSS) {
nfp_net_rss_config_default(dev);
update |= NFP_NET_CFG_UPDATE_RSS;
new_ctrl |= NFP_NET_CFG_CTRL_RSS;
}
/* Enable device */
new_ctrl |= NFP_NET_CFG_CTRL_ENABLE;
update |= NFP_NET_CFG_UPDATE_GEN | NFP_NET_CFG_UPDATE_RING;
if (hw->cap & NFP_NET_CFG_CTRL_RINGCFG)
new_ctrl |= NFP_NET_CFG_CTRL_RINGCFG;
nn_cfg_writel(hw, NFP_NET_CFG_CTRL, new_ctrl);
if (nfp_net_reconfig(hw, new_ctrl, update) < 0)
return -EIO;
/*
* Allocating rte mbuffs for configured rx queues.
* This requires queues being enabled before
*/
if (nfp_net_rx_freelist_setup(dev) < 0) {
ret = -ENOMEM;
goto error;
}
if (hw->is_pf) {
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
/* Configure the physical port up */
nfp_eth_set_configured(hw->cpp, hw->pf_port_idx, 1);
else
nfp_eth_set_configured(dev->process_private,
hw->pf_port_idx, 1);
}
hw->ctrl = new_ctrl;
return 0;
error:
/*
* An error returned by this function should mean the app
* exiting and then the system releasing all the memory
* allocated even memory coming from hugepages.
*
* The device could be enabled at this point with some queues
* ready for getting packets. This is true if the call to
* nfp_net_rx_freelist_setup() succeeds for some queues but
* fails for subsequent queues.
*
* This should make the app exiting but better if we tell the
* device first.
*/
nfp_net_disable_queues(dev);
return ret;
}
/* Stop device: disable rx and tx functions to allow for reconfiguring. */
static void
nfp_net_stop(struct rte_eth_dev *dev)
{
int i;
struct nfp_net_hw *hw;
PMD_INIT_LOG(DEBUG, "Stop");
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
nfp_net_disable_queues(dev);
/* Clear queues */
for (i = 0; i < dev->data->nb_tx_queues; i++) {
nfp_net_reset_tx_queue(
(struct nfp_net_txq *)dev->data->tx_queues[i]);
}
for (i = 0; i < dev->data->nb_rx_queues; i++) {
nfp_net_reset_rx_queue(
(struct nfp_net_rxq *)dev->data->rx_queues[i]);
}
if (hw->is_pf) {
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
/* Configure the physical port down */
nfp_eth_set_configured(hw->cpp, hw->pf_port_idx, 0);
else
nfp_eth_set_configured(dev->process_private,
hw->pf_port_idx, 0);
}
}
/* Reset and stop device. The device can not be restarted. */
static void
nfp_net_close(struct rte_eth_dev *dev)
{
struct nfp_net_hw *hw;
struct rte_pci_device *pci_dev;
int i;
PMD_INIT_LOG(DEBUG, "Close");
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
pci_dev = RTE_ETH_DEV_TO_PCI(dev);
/*
* We assume that the DPDK application is stopping all the
* threads/queues before calling the device close function.
*/
nfp_net_disable_queues(dev);
/* Clear queues */
for (i = 0; i < dev->data->nb_tx_queues; i++) {
nfp_net_reset_tx_queue(
(struct nfp_net_txq *)dev->data->tx_queues[i]);
}
for (i = 0; i < dev->data->nb_rx_queues; i++) {
nfp_net_reset_rx_queue(
(struct nfp_net_rxq *)dev->data->rx_queues[i]);
}
rte_intr_disable(&pci_dev->intr_handle);
nn_cfg_writeb(hw, NFP_NET_CFG_LSC, 0xff);
/* unregister callback func from eal lib */
rte_intr_callback_unregister(&pci_dev->intr_handle,
nfp_net_dev_interrupt_handler,
(void *)dev);
/*
* The ixgbe PMD driver disables the pcie master on the
* device. The i40e does not...
*/
}
static void
nfp_net_promisc_enable(struct rte_eth_dev *dev)
{
uint32_t new_ctrl, update = 0;
struct nfp_net_hw *hw;
PMD_DRV_LOG(DEBUG, "Promiscuous mode enable");
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if (!(hw->cap & NFP_NET_CFG_CTRL_PROMISC)) {
PMD_INIT_LOG(INFO, "Promiscuous mode not supported");
return;
}
if (hw->ctrl & NFP_NET_CFG_CTRL_PROMISC) {
PMD_DRV_LOG(INFO, "Promiscuous mode already enabled");
return;
}
new_ctrl = hw->ctrl | NFP_NET_CFG_CTRL_PROMISC;
update = NFP_NET_CFG_UPDATE_GEN;
/*
* DPDK sets promiscuous mode on just after this call assuming
* it can not fail ...
*/
if (nfp_net_reconfig(hw, new_ctrl, update) < 0)
return;
hw->ctrl = new_ctrl;
}
static void
nfp_net_promisc_disable(struct rte_eth_dev *dev)
{
uint32_t new_ctrl, update = 0;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if ((hw->ctrl & NFP_NET_CFG_CTRL_PROMISC) == 0) {
PMD_DRV_LOG(INFO, "Promiscuous mode already disabled");
return;
}
new_ctrl = hw->ctrl & ~NFP_NET_CFG_CTRL_PROMISC;
update = NFP_NET_CFG_UPDATE_GEN;
/*
* DPDK sets promiscuous mode off just before this call
* assuming it can not fail ...
*/
if (nfp_net_reconfig(hw, new_ctrl, update) < 0)
return;
hw->ctrl = new_ctrl;
}
/*
* return 0 means link status changed, -1 means not changed
*
* Wait to complete is needed as it can take up to 9 seconds to get the Link
* status.
*/
static int
nfp_net_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
{
struct nfp_net_hw *hw;
struct rte_eth_link link;
uint32_t nn_link_status;
int ret;
static const uint32_t ls_to_ethtool[] = {
[NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = ETH_SPEED_NUM_NONE,
[NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = ETH_SPEED_NUM_NONE,
[NFP_NET_CFG_STS_LINK_RATE_1G] = ETH_SPEED_NUM_1G,
[NFP_NET_CFG_STS_LINK_RATE_10G] = ETH_SPEED_NUM_10G,
[NFP_NET_CFG_STS_LINK_RATE_25G] = ETH_SPEED_NUM_25G,
[NFP_NET_CFG_STS_LINK_RATE_40G] = ETH_SPEED_NUM_40G,
[NFP_NET_CFG_STS_LINK_RATE_50G] = ETH_SPEED_NUM_50G,
[NFP_NET_CFG_STS_LINK_RATE_100G] = ETH_SPEED_NUM_100G,
};
PMD_DRV_LOG(DEBUG, "Link update");
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
nn_link_status = nn_cfg_readl(hw, NFP_NET_CFG_STS);
memset(&link, 0, sizeof(struct rte_eth_link));
if (nn_link_status & NFP_NET_CFG_STS_LINK)
link.link_status = ETH_LINK_UP;
link.link_duplex = ETH_LINK_FULL_DUPLEX;
nn_link_status = (nn_link_status >> NFP_NET_CFG_STS_LINK_RATE_SHIFT) &
NFP_NET_CFG_STS_LINK_RATE_MASK;
if (nn_link_status >= RTE_DIM(ls_to_ethtool))
link.link_speed = ETH_SPEED_NUM_NONE;
else
link.link_speed = ls_to_ethtool[nn_link_status];
ret = rte_eth_linkstatus_set(dev, &link);
if (ret == 0) {
if (link.link_status)
PMD_DRV_LOG(INFO, "NIC Link is Up");
else
PMD_DRV_LOG(INFO, "NIC Link is Down");
}
return ret;
}
static int
nfp_net_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
{
int i;
struct nfp_net_hw *hw;
struct rte_eth_stats nfp_dev_stats;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
/* RTE_ETHDEV_QUEUE_STAT_CNTRS default value is 16 */
memset(&nfp_dev_stats, 0, sizeof(nfp_dev_stats));
/* reading per RX ring stats */
for (i = 0; i < dev->data->nb_rx_queues; i++) {
if (i == RTE_ETHDEV_QUEUE_STAT_CNTRS)
break;
nfp_dev_stats.q_ipackets[i] =
nn_cfg_readq(hw, NFP_NET_CFG_RXR_STATS(i));
nfp_dev_stats.q_ipackets[i] -=
hw->eth_stats_base.q_ipackets[i];
nfp_dev_stats.q_ibytes[i] =
nn_cfg_readq(hw, NFP_NET_CFG_RXR_STATS(i) + 0x8);
nfp_dev_stats.q_ibytes[i] -=
hw->eth_stats_base.q_ibytes[i];
}
/* reading per TX ring stats */
for (i = 0; i < dev->data->nb_tx_queues; i++) {
if (i == RTE_ETHDEV_QUEUE_STAT_CNTRS)
break;
nfp_dev_stats.q_opackets[i] =
nn_cfg_readq(hw, NFP_NET_CFG_TXR_STATS(i));
nfp_dev_stats.q_opackets[i] -=
hw->eth_stats_base.q_opackets[i];
nfp_dev_stats.q_obytes[i] =
nn_cfg_readq(hw, NFP_NET_CFG_TXR_STATS(i) + 0x8);
nfp_dev_stats.q_obytes[i] -=
hw->eth_stats_base.q_obytes[i];
}
nfp_dev_stats.ipackets =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_FRAMES);
nfp_dev_stats.ipackets -= hw->eth_stats_base.ipackets;
nfp_dev_stats.ibytes =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_OCTETS);
nfp_dev_stats.ibytes -= hw->eth_stats_base.ibytes;
nfp_dev_stats.opackets =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_TX_FRAMES);
nfp_dev_stats.opackets -= hw->eth_stats_base.opackets;
nfp_dev_stats.obytes =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_TX_OCTETS);
nfp_dev_stats.obytes -= hw->eth_stats_base.obytes;
/* reading general device stats */
nfp_dev_stats.ierrors =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_ERRORS);
nfp_dev_stats.ierrors -= hw->eth_stats_base.ierrors;
nfp_dev_stats.oerrors =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_TX_ERRORS);
nfp_dev_stats.oerrors -= hw->eth_stats_base.oerrors;
/* RX ring mbuf allocation failures */
nfp_dev_stats.rx_nombuf = dev->data->rx_mbuf_alloc_failed;
nfp_dev_stats.imissed =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_DISCARDS);
nfp_dev_stats.imissed -= hw->eth_stats_base.imissed;
if (stats) {
memcpy(stats, &nfp_dev_stats, sizeof(*stats));
return 0;
}
return -EINVAL;
}
static void
nfp_net_stats_reset(struct rte_eth_dev *dev)
{
int i;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
/*
* hw->eth_stats_base records the per counter starting point.
* Lets update it now
*/
/* reading per RX ring stats */
for (i = 0; i < dev->data->nb_rx_queues; i++) {
if (i == RTE_ETHDEV_QUEUE_STAT_CNTRS)
break;
hw->eth_stats_base.q_ipackets[i] =
nn_cfg_readq(hw, NFP_NET_CFG_RXR_STATS(i));
hw->eth_stats_base.q_ibytes[i] =
nn_cfg_readq(hw, NFP_NET_CFG_RXR_STATS(i) + 0x8);
}
/* reading per TX ring stats */
for (i = 0; i < dev->data->nb_tx_queues; i++) {
if (i == RTE_ETHDEV_QUEUE_STAT_CNTRS)
break;
hw->eth_stats_base.q_opackets[i] =
nn_cfg_readq(hw, NFP_NET_CFG_TXR_STATS(i));
hw->eth_stats_base.q_obytes[i] =
nn_cfg_readq(hw, NFP_NET_CFG_TXR_STATS(i) + 0x8);
}
hw->eth_stats_base.ipackets =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_FRAMES);
hw->eth_stats_base.ibytes =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_OCTETS);
hw->eth_stats_base.opackets =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_TX_FRAMES);
hw->eth_stats_base.obytes =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_TX_OCTETS);
/* reading general device stats */
hw->eth_stats_base.ierrors =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_ERRORS);
hw->eth_stats_base.oerrors =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_TX_ERRORS);
/* RX ring mbuf allocation failures */
dev->data->rx_mbuf_alloc_failed = 0;
hw->eth_stats_base.imissed =
nn_cfg_readq(hw, NFP_NET_CFG_STATS_RX_DISCARDS);
}
static void
nfp_net_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
{
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
dev_info->max_rx_queues = (uint16_t)hw->max_rx_queues;
dev_info->max_tx_queues = (uint16_t)hw->max_tx_queues;
dev_info->min_rx_bufsize = ETHER_MIN_MTU;
dev_info->max_rx_pktlen = hw->max_mtu;
/* Next should change when PF support is implemented */
dev_info->max_mac_addrs = 1;
if (hw->cap & NFP_NET_CFG_CTRL_RXVLAN)
dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
if (hw->cap & NFP_NET_CFG_CTRL_RXCSUM)
dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_IPV4_CKSUM |
DEV_RX_OFFLOAD_UDP_CKSUM |
DEV_RX_OFFLOAD_TCP_CKSUM;
dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
if (hw->cap & NFP_NET_CFG_CTRL_TXVLAN)
dev_info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
if (hw->cap & NFP_NET_CFG_CTRL_TXCSUM)
dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_IPV4_CKSUM |
DEV_TX_OFFLOAD_UDP_CKSUM |
DEV_TX_OFFLOAD_TCP_CKSUM;
if (hw->cap & NFP_NET_CFG_CTRL_LSO_ANY)
dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
if (hw->cap & NFP_NET_CFG_CTRL_GATHER)
dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_MULTI_SEGS;
dev_info->default_rxconf = (struct rte_eth_rxconf) {
.rx_thresh = {
.pthresh = DEFAULT_RX_PTHRESH,
.hthresh = DEFAULT_RX_HTHRESH,
.wthresh = DEFAULT_RX_WTHRESH,
},
.rx_free_thresh = DEFAULT_RX_FREE_THRESH,
.rx_drop_en = 0,
};
dev_info->default_txconf = (struct rte_eth_txconf) {
.tx_thresh = {
.pthresh = DEFAULT_TX_PTHRESH,
.hthresh = DEFAULT_TX_HTHRESH,
.wthresh = DEFAULT_TX_WTHRESH,
},
.tx_free_thresh = DEFAULT_TX_FREE_THRESH,
.tx_rs_thresh = DEFAULT_TX_RSBIT_THRESH,
};
dev_info->flow_type_rss_offloads = ETH_RSS_IPV4 |
ETH_RSS_NONFRAG_IPV4_TCP |
ETH_RSS_NONFRAG_IPV4_UDP |
ETH_RSS_IPV6 |
ETH_RSS_NONFRAG_IPV6_TCP |
ETH_RSS_NONFRAG_IPV6_UDP;
dev_info->reta_size = NFP_NET_CFG_RSS_ITBL_SZ;
dev_info->hash_key_size = NFP_NET_CFG_RSS_KEY_SZ;
dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G |
ETH_LINK_SPEED_25G | ETH_LINK_SPEED_40G |
ETH_LINK_SPEED_50G | ETH_LINK_SPEED_100G;
}
static const uint32_t *
nfp_net_supported_ptypes_get(struct rte_eth_dev *dev)
{
static const uint32_t ptypes[] = {
/* refers to nfp_net_set_hash() */
RTE_PTYPE_INNER_L3_IPV4,
RTE_PTYPE_INNER_L3_IPV6,
RTE_PTYPE_INNER_L3_IPV6_EXT,
RTE_PTYPE_INNER_L4_MASK,
RTE_PTYPE_UNKNOWN
};
if (dev->rx_pkt_burst == nfp_net_recv_pkts)
return ptypes;
return NULL;
}
static uint32_t
nfp_net_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx)
{
struct nfp_net_rxq *rxq;
struct nfp_net_rx_desc *rxds;
uint32_t idx;
uint32_t count;
rxq = (struct nfp_net_rxq *)dev->data->rx_queues[queue_idx];
idx = rxq->rd_p;
count = 0;
/*
* Other PMDs are just checking the DD bit in intervals of 4
* descriptors and counting all four if the first has the DD
* bit on. Of course, this is not accurate but can be good for
* performance. But ideally that should be done in descriptors
* chunks belonging to the same cache line
*/
while (count < rxq->rx_count) {
rxds = &rxq->rxds[idx];
if ((rxds->rxd.meta_len_dd & PCIE_DESC_RX_DD) == 0)
break;
count++;
idx++;
/* Wrapping? */
if ((idx) == rxq->rx_count)
idx = 0;
}
return count;
}
static int
nfp_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
{
struct rte_pci_device *pci_dev;
struct nfp_net_hw *hw;
int base = 0;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
pci_dev = RTE_ETH_DEV_TO_PCI(dev);
if (pci_dev->intr_handle.type != RTE_INTR_HANDLE_UIO)
base = 1;
/* Make sure all updates are written before un-masking */
rte_wmb();
nn_cfg_writeb(hw, NFP_NET_CFG_ICR(base + queue_id),
NFP_NET_CFG_ICR_UNMASKED);
return 0;
}
static int
nfp_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
{
struct rte_pci_device *pci_dev;
struct nfp_net_hw *hw;
int base = 0;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
pci_dev = RTE_ETH_DEV_TO_PCI(dev);
if (pci_dev->intr_handle.type != RTE_INTR_HANDLE_UIO)
base = 1;
/* Make sure all updates are written before un-masking */
rte_wmb();
nn_cfg_writeb(hw, NFP_NET_CFG_ICR(base + queue_id), 0x1);
return 0;
}
static void
nfp_net_dev_link_status_print(struct rte_eth_dev *dev)
{
struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
struct rte_eth_link link;
rte_eth_linkstatus_get(dev, &link);
if (link.link_status)
PMD_DRV_LOG(INFO, "Port %d: Link Up - speed %u Mbps - %s",
dev->data->port_id, link.link_speed,
link.link_duplex == ETH_LINK_FULL_DUPLEX
? "full-duplex" : "half-duplex");
else
PMD_DRV_LOG(INFO, " Port %d: Link Down",
dev->data->port_id);
PMD_DRV_LOG(INFO, "PCI Address: %04d:%02d:%02d:%d",
pci_dev->addr.domain, pci_dev->addr.bus,
pci_dev->addr.devid, pci_dev->addr.function);
}
/* Interrupt configuration and handling */
/*
* nfp_net_irq_unmask - Unmask an interrupt
*
* If MSI-X auto-masking is enabled clear the mask bit, otherwise
* clear the ICR for the entry.
*/
static void
nfp_net_irq_unmask(struct rte_eth_dev *dev)
{
struct nfp_net_hw *hw;
struct rte_pci_device *pci_dev;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
pci_dev = RTE_ETH_DEV_TO_PCI(dev);
if (hw->ctrl & NFP_NET_CFG_CTRL_MSIXAUTO) {
/* If MSI-X auto-masking is used, clear the entry */
rte_wmb();
rte_intr_enable(&pci_dev->intr_handle);
} else {
/* Make sure all updates are written before un-masking */
rte_wmb();
nn_cfg_writeb(hw, NFP_NET_CFG_ICR(NFP_NET_IRQ_LSC_IDX),
NFP_NET_CFG_ICR_UNMASKED);
}
}
static void
nfp_net_dev_interrupt_handler(void *param)
{
int64_t timeout;
struct rte_eth_link link;
struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
PMD_DRV_LOG(DEBUG, "We got a LSC interrupt!!!");
rte_eth_linkstatus_get(dev, &link);
nfp_net_link_update(dev, 0);
/* likely to up */
if (!link.link_status) {
/* handle it 1 sec later, wait it being stable */
timeout = NFP_NET_LINK_UP_CHECK_TIMEOUT;
/* likely to down */
} else {
/* handle it 4 sec later, wait it being stable */
timeout = NFP_NET_LINK_DOWN_CHECK_TIMEOUT;
}
if (rte_eal_alarm_set(timeout * 1000,
nfp_net_dev_interrupt_delayed_handler,
(void *)dev) < 0) {
PMD_INIT_LOG(ERR, "Error setting alarm");
/* Unmasking */
nfp_net_irq_unmask(dev);
}
}
/*
* Interrupt handler which shall be registered for alarm callback for delayed
* handling specific interrupt to wait for the stable nic state. As the NIC
* interrupt state is not stable for nfp after link is just down, it needs
* to wait 4 seconds to get the stable status.
*
* @param handle Pointer to interrupt handle.
* @param param The address of parameter (struct rte_eth_dev *)
*
* @return void
*/
static void
nfp_net_dev_interrupt_delayed_handler(void *param)
{
struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
nfp_net_link_update(dev, 0);
_rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
nfp_net_dev_link_status_print(dev);
/* Unmasking */
nfp_net_irq_unmask(dev);
}
static int
nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
{
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
/* check that mtu is within the allowed range */
if ((mtu < ETHER_MIN_MTU) || ((uint32_t)mtu > hw->max_mtu))
return -EINVAL;
/* mtu setting is forbidden if port is started */
if (dev->data->dev_started) {
PMD_DRV_LOG(ERR, "port %d must be stopped before configuration",
dev->data->port_id);
return -EBUSY;
}
/* switch to jumbo mode if needed */
if ((uint32_t)mtu > 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;
/* update max frame size */
dev->data->dev_conf.rxmode.max_rx_pkt_len = (uint32_t)mtu;
/* writing to configuration space */
nn_cfg_writel(hw, NFP_NET_CFG_MTU, (uint32_t)mtu);
hw->mtu = mtu;
return 0;
}
static int
nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
uint16_t queue_idx, uint16_t nb_desc,
unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp)
{
const struct rte_memzone *tz;
struct nfp_net_rxq *rxq;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
PMD_INIT_FUNC_TRACE();
/* Validating number of descriptors */
if (((nb_desc * sizeof(struct nfp_net_rx_desc)) % 128) != 0 ||
(nb_desc > NFP_NET_MAX_RX_DESC) ||
(nb_desc < NFP_NET_MIN_RX_DESC)) {
PMD_DRV_LOG(ERR, "Wrong nb_desc value");
return -EINVAL;
}
/*
* Free memory prior to re-allocation if needed. This is the case after
* calling nfp_net_stop
*/
if (dev->data->rx_queues[queue_idx]) {
nfp_net_rx_queue_release(dev->data->rx_queues[queue_idx]);
dev->data->rx_queues[queue_idx] = NULL;
}
/* Allocating rx queue data structure */
rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct nfp_net_rxq),
RTE_CACHE_LINE_SIZE, socket_id);
if (rxq == NULL)
return -ENOMEM;
/* Hw queues mapping based on firmware confifguration */
rxq->qidx = queue_idx;
rxq->fl_qcidx = queue_idx * hw->stride_rx;
rxq->rx_qcidx = rxq->fl_qcidx + (hw->stride_rx - 1);
rxq->qcp_fl = hw->rx_bar + NFP_QCP_QUEUE_OFF(rxq->fl_qcidx);
rxq->qcp_rx = hw->rx_bar + NFP_QCP_QUEUE_OFF(rxq->rx_qcidx);
/*
* Tracking mbuf size for detecting a potential mbuf overflow due to
* RX offset
*/
rxq->mem_pool = mp;
rxq->mbuf_size = rxq->mem_pool->elt_size;
rxq->mbuf_size -= (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM);
hw->flbufsz = rxq->mbuf_size;
rxq->rx_count = nb_desc;
rxq->port_id = dev->data->port_id;
rxq->rx_free_thresh = rx_conf->rx_free_thresh;
rxq->drop_en = rx_conf->rx_drop_en;
/*
* Allocate RX ring hardware descriptors. A memzone large enough to
* handle the maximum ring size is allocated in order to allow for
* resizing in later calls to the queue setup function.
*/
tz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx,
sizeof(struct nfp_net_rx_desc) *
NFP_NET_MAX_RX_DESC, NFP_MEMZONE_ALIGN,
socket_id);
if (tz == NULL) {
PMD_DRV_LOG(ERR, "Error allocatig rx dma");
nfp_net_rx_queue_release(rxq);
return -ENOMEM;
}
/* Saving physical and virtual addresses for the RX ring */
rxq->dma = (uint64_t)tz->iova;
rxq->rxds = (struct nfp_net_rx_desc *)tz->addr;
/* mbuf pointers array for referencing mbufs linked to RX descriptors */
rxq->rxbufs = rte_zmalloc_socket("rxq->rxbufs",
sizeof(*rxq->rxbufs) * nb_desc,
RTE_CACHE_LINE_SIZE, socket_id);
if (rxq->rxbufs == NULL) {
nfp_net_rx_queue_release(rxq);
return -ENOMEM;
}
PMD_RX_LOG(DEBUG, "rxbufs=%p hw_ring=%p dma_addr=0x%" PRIx64,
rxq->rxbufs, rxq->rxds, (unsigned long int)rxq->dma);
nfp_net_reset_rx_queue(rxq);
dev->data->rx_queues[queue_idx] = rxq;
rxq->hw = hw;
/*
* Telling the HW about the physical address of the RX ring and number
* of descriptors in log2 format
*/
nn_cfg_writeq(hw, NFP_NET_CFG_RXR_ADDR(queue_idx), rxq->dma);
nn_cfg_writeb(hw, NFP_NET_CFG_RXR_SZ(queue_idx), rte_log2_u32(nb_desc));
return 0;
}
static int
nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq)
{
struct nfp_net_rx_buff *rxe = rxq->rxbufs;
uint64_t dma_addr;
unsigned i;
PMD_RX_LOG(DEBUG, "nfp_net_rx_fill_freelist for %u descriptors",
rxq->rx_count);
for (i = 0; i < rxq->rx_count; i++) {
struct nfp_net_rx_desc *rxd;
struct rte_mbuf *mbuf = rte_pktmbuf_alloc(rxq->mem_pool);
if (mbuf == NULL) {
PMD_DRV_LOG(ERR, "RX mbuf alloc failed queue_id=%u",
(unsigned)rxq->qidx);
return -ENOMEM;
}
dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(mbuf));
rxd = &rxq->rxds[i];
rxd->fld.dd = 0;
rxd->fld.dma_addr_hi = (dma_addr >> 32) & 0xff;
rxd->fld.dma_addr_lo = dma_addr & 0xffffffff;
rxe[i].mbuf = mbuf;
PMD_RX_LOG(DEBUG, "[%d]: %" PRIx64, i, dma_addr);
}
/* Make sure all writes are flushed before telling the hardware */
rte_wmb();
/* Not advertising the whole ring as the firmware gets confused if so */
PMD_RX_LOG(DEBUG, "Increment FL write pointer in %u",
rxq->rx_count - 1);
nfp_qcp_ptr_add(rxq->qcp_fl, NFP_QCP_WRITE_PTR, rxq->rx_count - 1);
return 0;
}
static int
nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_txconf *tx_conf)
{
const struct rte_memzone *tz;
struct nfp_net_txq *txq;
uint16_t tx_free_thresh;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
PMD_INIT_FUNC_TRACE();
/* Validating number of descriptors */
if (((nb_desc * sizeof(struct nfp_net_tx_desc)) % 128) != 0 ||
(nb_desc > NFP_NET_MAX_TX_DESC) ||
(nb_desc < NFP_NET_MIN_TX_DESC)) {
PMD_DRV_LOG(ERR, "Wrong nb_desc value");
return -EINVAL;
}
tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
tx_conf->tx_free_thresh :
DEFAULT_TX_FREE_THRESH);
if (tx_free_thresh > (nb_desc)) {
PMD_DRV_LOG(ERR,
"tx_free_thresh must be less than the number of TX "
"descriptors. (tx_free_thresh=%u port=%d "
"queue=%d)", (unsigned int)tx_free_thresh,
dev->data->port_id, (int)queue_idx);
return -(EINVAL);
}
/*
* Free memory prior to re-allocation if needed. This is the case after
* calling nfp_net_stop
*/
if (dev->data->tx_queues[queue_idx]) {
PMD_TX_LOG(DEBUG, "Freeing memory prior to re-allocation %d",
queue_idx);
nfp_net_tx_queue_release(dev->data->tx_queues[queue_idx]);
dev->data->tx_queues[queue_idx] = NULL;
}
/* Allocating tx queue data structure */
txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct nfp_net_txq),
RTE_CACHE_LINE_SIZE, socket_id);
if (txq == NULL) {
PMD_DRV_LOG(ERR, "Error allocating tx dma");
return -ENOMEM;
}
/*
* Allocate TX ring hardware descriptors. A memzone large enough to
* handle the maximum ring size is allocated in order to allow for
* resizing in later calls to the queue setup function.
*/
tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx,
sizeof(struct nfp_net_tx_desc) *
NFP_NET_MAX_TX_DESC, NFP_MEMZONE_ALIGN,
socket_id);
if (tz == NULL) {
PMD_DRV_LOG(ERR, "Error allocating tx dma");
nfp_net_tx_queue_release(txq);
return -ENOMEM;
}
txq->tx_count = nb_desc;
txq->tx_free_thresh = tx_free_thresh;
txq->tx_pthresh = tx_conf->tx_thresh.pthresh;
txq->tx_hthresh = tx_conf->tx_thresh.hthresh;
txq->tx_wthresh = tx_conf->tx_thresh.wthresh;
/* queue mapping based on firmware configuration */
txq->qidx = queue_idx;
txq->tx_qcidx = queue_idx * hw->stride_tx;
txq->qcp_q = hw->tx_bar + NFP_QCP_QUEUE_OFF(txq->tx_qcidx);
txq->port_id = dev->data->port_id;
/* Saving physical and virtual addresses for the TX ring */
txq->dma = (uint64_t)tz->iova;
txq->txds = (struct nfp_net_tx_desc *)tz->addr;
/* mbuf pointers array for referencing mbufs linked to TX descriptors */
txq->txbufs = rte_zmalloc_socket("txq->txbufs",
sizeof(*txq->txbufs) * nb_desc,
RTE_CACHE_LINE_SIZE, socket_id);
if (txq->txbufs == NULL) {
nfp_net_tx_queue_release(txq);
return -ENOMEM;
}
PMD_TX_LOG(DEBUG, "txbufs=%p hw_ring=%p dma_addr=0x%" PRIx64,
txq->txbufs, txq->txds, (unsigned long int)txq->dma);
nfp_net_reset_tx_queue(txq);
dev->data->tx_queues[queue_idx] = txq;
txq->hw = hw;
/*
* Telling the HW about the physical address of the TX ring and number
* of descriptors in log2 format
*/
nn_cfg_writeq(hw, NFP_NET_CFG_TXR_ADDR(queue_idx), txq->dma);
nn_cfg_writeb(hw, NFP_NET_CFG_TXR_SZ(queue_idx), rte_log2_u32(nb_desc));
return 0;
}
/* nfp_net_tx_tso - Set TX descriptor for TSO */
static inline void
nfp_net_tx_tso(struct nfp_net_txq *txq, struct nfp_net_tx_desc *txd,
struct rte_mbuf *mb)
{
uint64_t ol_flags;
struct nfp_net_hw *hw = txq->hw;
if (!(hw->cap & NFP_NET_CFG_CTRL_LSO_ANY))
goto clean_txd;
ol_flags = mb->ol_flags;
if (!(ol_flags & PKT_TX_TCP_SEG))
goto clean_txd;
txd->l3_offset = mb->l2_len;
txd->l4_offset = mb->l2_len + mb->l3_len;
txd->lso_hdrlen = mb->l2_len + mb->l3_len + mb->l4_len;
txd->mss = rte_cpu_to_le_16(mb->tso_segsz);
txd->flags = PCIE_DESC_TX_LSO;
return;
clean_txd:
txd->flags = 0;
txd->l3_offset = 0;
txd->l4_offset = 0;
txd->lso_hdrlen = 0;
txd->mss = 0;
}
/* nfp_net_tx_cksum - Set TX CSUM offload flags in TX descriptor */
static inline void
nfp_net_tx_cksum(struct nfp_net_txq *txq, struct nfp_net_tx_desc *txd,
struct rte_mbuf *mb)
{
uint64_t ol_flags;
struct nfp_net_hw *hw = txq->hw;
if (!(hw->cap & NFP_NET_CFG_CTRL_TXCSUM))
return;
ol_flags = mb->ol_flags;
/* IPv6 does not need checksum */
if (ol_flags & PKT_TX_IP_CKSUM)
txd->flags |= PCIE_DESC_TX_IP4_CSUM;
switch (ol_flags & PKT_TX_L4_MASK) {
case PKT_TX_UDP_CKSUM:
txd->flags |= PCIE_DESC_TX_UDP_CSUM;
break;
case PKT_TX_TCP_CKSUM:
txd->flags |= PCIE_DESC_TX_TCP_CSUM;
break;
}
if (ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK))
txd->flags |= PCIE_DESC_TX_CSUM;
}
/* nfp_net_rx_cksum - set mbuf checksum flags based on RX descriptor flags */
static inline void
nfp_net_rx_cksum(struct nfp_net_rxq *rxq, struct nfp_net_rx_desc *rxd,
struct rte_mbuf *mb)
{
struct nfp_net_hw *hw = rxq->hw;
if (!(hw->ctrl & NFP_NET_CFG_CTRL_RXCSUM))
return;
/* If IPv4 and IP checksum error, fail */
if (unlikely((rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM) &&
!(rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM_OK)))
mb->ol_flags |= PKT_RX_IP_CKSUM_BAD;
else
mb->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
/* If neither UDP nor TCP return */
if (!(rxd->rxd.flags & PCIE_DESC_RX_TCP_CSUM) &&
!(rxd->rxd.flags & PCIE_DESC_RX_UDP_CSUM))
return;
if (likely(rxd->rxd.flags & PCIE_DESC_RX_L4_CSUM_OK))
mb->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
else
mb->ol_flags |= PKT_RX_L4_CKSUM_BAD;
}
#define NFP_HASH_OFFSET ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 4)
#define NFP_HASH_TYPE_OFFSET ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 8)
#define NFP_DESC_META_LEN(d) (d->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK)
/*
* nfp_net_set_hash - Set mbuf hash data
*
* The RSS hash and hash-type are pre-pended to the packet data.
* Extract and decode it and set the mbuf fields.
*/
static inline void
nfp_net_set_hash(struct nfp_net_rxq *rxq, struct nfp_net_rx_desc *rxd,
struct rte_mbuf *mbuf)
{
struct nfp_net_hw *hw = rxq->hw;
uint8_t *meta_offset;
uint32_t meta_info;
uint32_t hash = 0;
uint32_t hash_type = 0;
if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS))
return;
/* this is true for new firmwares */
if (likely(((hw->cap & NFP_NET_CFG_CTRL_RSS2) ||
(NFD_CFG_MAJOR_VERSION_of(hw->ver) == 4)) &&
NFP_DESC_META_LEN(rxd))) {
/*
* new metadata api:
* <---- 32 bit ----->
* m field type word
* e data field #2
* t data field #1
* a data field #0
* ====================
* packet data
*
* Field type word contains up to 8 4bit field types
* A 4bit field type refers to a data field word
* A data field word can have several 4bit field types
*/
meta_offset = rte_pktmbuf_mtod(mbuf, uint8_t *);
meta_offset -= NFP_DESC_META_LEN(rxd);
meta_info = rte_be_to_cpu_32(*(uint32_t *)meta_offset);
meta_offset += 4;
/* NFP PMD just supports metadata for hashing */
switch (meta_info & NFP_NET_META_FIELD_MASK) {
case NFP_NET_META_HASH:
/* next field type is about the hash type */
meta_info >>= NFP_NET_META_FIELD_SIZE;
/* hash value is in the data field */
hash = rte_be_to_cpu_32(*(uint32_t *)meta_offset);
hash_type = meta_info & NFP_NET_META_FIELD_MASK;
break;
default:
/* Unsupported metadata can be a performance issue */
return;
}
} else {
if (!(rxd->rxd.flags & PCIE_DESC_RX_RSS))
return;
hash = rte_be_to_cpu_32(*(uint32_t *)NFP_HASH_OFFSET);
hash_type = rte_be_to_cpu_32(*(uint32_t *)NFP_HASH_TYPE_OFFSET);
}
mbuf->hash.rss = hash;
mbuf->ol_flags |= PKT_RX_RSS_HASH;
switch (hash_type) {
case NFP_NET_RSS_IPV4:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV4;
break;
case NFP_NET_RSS_IPV6:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6;
break;
case NFP_NET_RSS_IPV6_EX:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
break;
case NFP_NET_RSS_IPV4_TCP:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
break;
case NFP_NET_RSS_IPV6_TCP:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
break;
case NFP_NET_RSS_IPV4_UDP:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
break;
case NFP_NET_RSS_IPV6_UDP:
mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
break;
default:
mbuf->packet_type |= RTE_PTYPE_INNER_L4_MASK;
}
}
static inline void
nfp_net_mbuf_alloc_failed(struct nfp_net_rxq *rxq)
{
rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
}
#define NFP_DESC_META_LEN(d) (d->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK)
/*
* RX path design:
*
* There are some decissions to take:
* 1) How to check DD RX descriptors bit
* 2) How and when to allocate new mbufs
*
* Current implementation checks just one single DD bit each loop. As each
* descriptor is 8 bytes, it is likely a good idea to check descriptors in
* a single cache line instead. Tests with this change have not shown any
* performance improvement but it requires further investigation. For example,
* depending on which descriptor is next, the number of descriptors could be
* less than 8 for just checking those in the same cache line. This implies
* extra work which could be counterproductive by itself. Indeed, last firmware
* changes are just doing this: writing several descriptors with the DD bit
* for saving PCIe bandwidth and DMA operations from the NFP.
*
* Mbuf allocation is done when a new packet is received. Then the descriptor
* is automatically linked with the new mbuf and the old one is given to the
* user. The main drawback with this design is mbuf allocation is heavier than
* using bulk allocations allowed by DPDK with rte_mempool_get_bulk. From the
* cache point of view it does not seem allocating the mbuf early on as we are
* doing now have any benefit at all. Again, tests with this change have not
* shown any improvement. Also, rte_mempool_get_bulk returns all or nothing
* so looking at the implications of this type of allocation should be studied
* deeply
*/
static uint16_t
nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
{
struct nfp_net_rxq *rxq;
struct nfp_net_rx_desc *rxds;
struct nfp_net_rx_buff *rxb;
struct nfp_net_hw *hw;
struct rte_mbuf *mb;
struct rte_mbuf *new_mb;
uint16_t nb_hold;
uint64_t dma_addr;
int avail;
rxq = rx_queue;
if (unlikely(rxq == NULL)) {
/*
* DPDK just checks the queue is lower than max queues
* enabled. But the queue needs to be configured
*/
RTE_LOG_DP(ERR, PMD, "RX Bad queue\n");
return -EINVAL;
}
hw = rxq->hw;
avail = 0;
nb_hold = 0;
while (avail < nb_pkts) {
rxb = &rxq->rxbufs[rxq->rd_p];
if (unlikely(rxb == NULL)) {
RTE_LOG_DP(ERR, PMD, "rxb does not exist!\n");
break;
}
rxds = &rxq->rxds[rxq->rd_p];
if ((rxds->rxd.meta_len_dd & PCIE_DESC_RX_DD) == 0)
break;
/*
* Memory barrier to ensure that we won't do other
* reads before the DD bit.
*/
rte_rmb();
/*
* We got a packet. Let's alloc a new mbuff for refilling the
* free descriptor ring as soon as possible
*/
new_mb = rte_pktmbuf_alloc(rxq->mem_pool);
if (unlikely(new_mb == NULL)) {
RTE_LOG_DP(DEBUG, PMD,
"RX mbuf alloc failed port_id=%u queue_id=%u\n",
rxq->port_id, (unsigned int)rxq->qidx);
nfp_net_mbuf_alloc_failed(rxq);
break;
}
nb_hold++;
/*
* Grab the mbuff and refill the descriptor with the
* previously allocated mbuff
*/
mb = rxb->mbuf;
rxb->mbuf = new_mb;
PMD_RX_LOG(DEBUG, "Packet len: %u, mbuf_size: %u",
rxds->rxd.data_len, rxq->mbuf_size);
/* Size of this segment */
mb->data_len = rxds->rxd.data_len - NFP_DESC_META_LEN(rxds);
/* Size of the whole packet. We just support 1 segment */
mb->pkt_len = rxds->rxd.data_len - NFP_DESC_META_LEN(rxds);
if (unlikely((mb->data_len + hw->rx_offset) >
rxq->mbuf_size)) {
/*
* This should not happen and the user has the
* responsibility of avoiding it. But we have
* to give some info about the error
*/
RTE_LOG_DP(ERR, PMD,
"mbuf overflow likely due to the RX offset.\n"
"\t\tYour mbuf size should have extra space for"
" RX offset=%u bytes.\n"
"\t\tCurrently you just have %u bytes available"
" but the received packet is %u bytes long",
hw->rx_offset,
rxq->mbuf_size - hw->rx_offset,
mb->data_len);
return -EINVAL;
}
/* Filling the received mbuff with packet info */
if (hw->rx_offset)
mb->data_off = RTE_PKTMBUF_HEADROOM + hw->rx_offset;
else
mb->data_off = RTE_PKTMBUF_HEADROOM +
NFP_DESC_META_LEN(rxds);
/* No scatter mode supported */
mb->nb_segs = 1;
mb->next = NULL;
mb->port = rxq->port_id;
/* Checking the RSS flag */
nfp_net_set_hash(rxq, rxds, mb);
/* Checking the checksum flag */
nfp_net_rx_cksum(rxq, rxds, mb);
if ((rxds->rxd.flags & PCIE_DESC_RX_VLAN) &&
(hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN)) {
mb->vlan_tci = rte_cpu_to_le_32(rxds->rxd.vlan);
mb->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
}
/* Adding the mbuff to the mbuff array passed by the app */
rx_pkts[avail++] = mb;
/* Now resetting and updating the descriptor */
rxds->vals[0] = 0;
rxds->vals[1] = 0;
dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(new_mb));
rxds->fld.dd = 0;
rxds->fld.dma_addr_hi = (dma_addr >> 32) & 0xff;
rxds->fld.dma_addr_lo = dma_addr & 0xffffffff;
rxq->rd_p++;
if (unlikely(rxq->rd_p == rxq->rx_count)) /* wrapping?*/
rxq->rd_p = 0;
}
if (nb_hold == 0)
return nb_hold;
PMD_RX_LOG(DEBUG, "RX port_id=%u queue_id=%u, %d packets received",
rxq->port_id, (unsigned int)rxq->qidx, nb_hold);
nb_hold += rxq->nb_rx_hold;
/*
* FL descriptors needs to be written before incrementing the
* FL queue WR pointer
*/
rte_wmb();
if (nb_hold > rxq->rx_free_thresh) {
PMD_RX_LOG(DEBUG, "port=%u queue=%u nb_hold=%u avail=%u",
rxq->port_id, (unsigned int)rxq->qidx,
(unsigned)nb_hold, (unsigned)avail);
nfp_qcp_ptr_add(rxq->qcp_fl, NFP_QCP_WRITE_PTR, nb_hold);
nb_hold = 0;
}
rxq->nb_rx_hold = nb_hold;
return avail;
}
/*
* nfp_net_tx_free_bufs - Check for descriptors with a complete
* status
* @txq: TX queue to work with
* Returns number of descriptors freed
*/
int
nfp_net_tx_free_bufs(struct nfp_net_txq *txq)
{
uint32_t qcp_rd_p;
int todo;
PMD_TX_LOG(DEBUG, "queue %u. Check for descriptor with a complete"
" status", txq->qidx);
/* Work out how many packets have been sent */
qcp_rd_p = nfp_qcp_read(txq->qcp_q, NFP_QCP_READ_PTR);
if (qcp_rd_p == txq->rd_p) {
PMD_TX_LOG(DEBUG, "queue %u: It seems harrier is not sending "
"packets (%u, %u)", txq->qidx,
qcp_rd_p, txq->rd_p);
return 0;
}
if (qcp_rd_p > txq->rd_p)
todo = qcp_rd_p - txq->rd_p;
else
todo = qcp_rd_p + txq->tx_count - txq->rd_p;
PMD_TX_LOG(DEBUG, "qcp_rd_p %u, txq->rd_p: %u, qcp->rd_p: %u",
qcp_rd_p, txq->rd_p, txq->rd_p);
if (todo == 0)
return todo;
txq->rd_p += todo;
if (unlikely(txq->rd_p >= txq->tx_count))
txq->rd_p -= txq->tx_count;
return todo;
}
/* Leaving always free descriptors for avoiding wrapping confusion */
static inline
uint32_t nfp_free_tx_desc(struct nfp_net_txq *txq)
{
if (txq->wr_p >= txq->rd_p)
return txq->tx_count - (txq->wr_p - txq->rd_p) - 8;
else
return txq->rd_p - txq->wr_p - 8;
}
/*
* nfp_net_txq_full - Check if the TX queue free descriptors
* is below tx_free_threshold
*
* @txq: TX queue to check
*
* This function uses the host copy* of read/write pointers
*/
static inline
uint32_t nfp_net_txq_full(struct nfp_net_txq *txq)
{
return (nfp_free_tx_desc(txq) < txq->tx_free_thresh);
}
static uint16_t
nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
{
struct nfp_net_txq *txq;
struct nfp_net_hw *hw;
struct nfp_net_tx_desc *txds, txd;
struct rte_mbuf *pkt;
uint64_t dma_addr;
int pkt_size, dma_size;
uint16_t free_descs, issued_descs;
struct rte_mbuf **lmbuf;
int i;
txq = tx_queue;
hw = txq->hw;
txds = &txq->txds[txq->wr_p];
PMD_TX_LOG(DEBUG, "working for queue %u at pos %d and %u packets",
txq->qidx, txq->wr_p, nb_pkts);
if ((nfp_free_tx_desc(txq) < nb_pkts) || (nfp_net_txq_full(txq)))
nfp_net_tx_free_bufs(txq);
free_descs = (uint16_t)nfp_free_tx_desc(txq);
if (unlikely(free_descs == 0))
return 0;
pkt = *tx_pkts;
i = 0;
issued_descs = 0;
PMD_TX_LOG(DEBUG, "queue: %u. Sending %u packets",
txq->qidx, nb_pkts);
/* Sending packets */
while ((i < nb_pkts) && free_descs) {
/* Grabbing the mbuf linked to the current descriptor */
lmbuf = &txq->txbufs[txq->wr_p].mbuf;
/* Warming the cache for releasing the mbuf later on */
RTE_MBUF_PREFETCH_TO_FREE(*lmbuf);
pkt = *(tx_pkts + i);
if (unlikely((pkt->nb_segs > 1) &&
!(hw->cap & NFP_NET_CFG_CTRL_GATHER))) {
PMD_INIT_LOG(INFO, "NFP_NET_CFG_CTRL_GATHER not set");
rte_panic("Multisegment packet unsupported\n");
}
/* Checking if we have enough descriptors */
if (unlikely(pkt->nb_segs > free_descs))
goto xmit_end;
/*
* Checksum and VLAN flags just in the first descriptor for a
* multisegment packet, but TSO info needs to be in all of them.
*/
txd.data_len = pkt->pkt_len;
nfp_net_tx_tso(txq, &txd, pkt);
nfp_net_tx_cksum(txq, &txd, pkt);
if ((pkt->ol_flags & PKT_TX_VLAN_PKT) &&
(hw->cap & NFP_NET_CFG_CTRL_TXVLAN)) {
txd.flags |= PCIE_DESC_TX_VLAN;
txd.vlan = pkt->vlan_tci;
}
/*
* mbuf data_len is the data in one segment and pkt_len data
* in the whole packet. When the packet is just one segment,
* then data_len = pkt_len
*/
pkt_size = pkt->pkt_len;
while (pkt) {
/* Copying TSO, VLAN and cksum info */
*txds = txd;
/* Releasing mbuf used by this descriptor previously*/
if (*lmbuf)
rte_pktmbuf_free_seg(*lmbuf);
/*
* Linking mbuf with descriptor for being released
* next time descriptor is used
*/
*lmbuf = pkt;
dma_size = pkt->data_len;
dma_addr = rte_mbuf_data_iova(pkt);
PMD_TX_LOG(DEBUG, "Working with mbuf at dma address:"
"%" PRIx64 "", dma_addr);
/* Filling descriptors fields */
txds->dma_len = dma_size;
txds->data_len = txd.data_len;
txds->dma_addr_hi = (dma_addr >> 32) & 0xff;
txds->dma_addr_lo = (dma_addr & 0xffffffff);
ASSERT(free_descs > 0);
free_descs--;
txq->wr_p++;
if (unlikely(txq->wr_p == txq->tx_count)) /* wrapping?*/
txq->wr_p = 0;
pkt_size -= dma_size;
/*
* Making the EOP, packets with just one segment
* the priority
*/
if (likely(!pkt_size))
txds->offset_eop = PCIE_DESC_TX_EOP;
else
txds->offset_eop = 0;
pkt = pkt->next;
/* Referencing next free TX descriptor */
txds = &txq->txds[txq->wr_p];
lmbuf = &txq->txbufs[txq->wr_p].mbuf;
issued_descs++;
}
i++;
}
xmit_end:
/* Increment write pointers. Force memory write before we let HW know */
rte_wmb();
nfp_qcp_ptr_add(txq->qcp_q, NFP_QCP_WRITE_PTR, issued_descs);
return i;
}
static int
nfp_net_vlan_offload_set(struct rte_eth_dev *dev, int mask)
{
uint32_t new_ctrl, update;
struct nfp_net_hw *hw;
int ret;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
new_ctrl = 0;
if ((mask & ETH_VLAN_FILTER_OFFLOAD) ||
(mask & ETH_VLAN_EXTEND_OFFLOAD))
PMD_DRV_LOG(INFO, "No support for ETH_VLAN_FILTER_OFFLOAD or"
" ETH_VLAN_EXTEND_OFFLOAD");
/* Enable vlan strip if it is not configured yet */
if ((mask & ETH_VLAN_STRIP_OFFLOAD) &&
!(hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN))
new_ctrl = hw->ctrl | NFP_NET_CFG_CTRL_RXVLAN;
/* Disable vlan strip just if it is configured */
if (!(mask & ETH_VLAN_STRIP_OFFLOAD) &&
(hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN))
new_ctrl = hw->ctrl & ~NFP_NET_CFG_CTRL_RXVLAN;
if (new_ctrl == 0)
return 0;
update = NFP_NET_CFG_UPDATE_GEN;
ret = nfp_net_reconfig(hw, new_ctrl, update);
if (!ret)
hw->ctrl = new_ctrl;
return ret;
}
static int
nfp_net_rss_reta_write(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
uint32_t reta, mask;
int i, j;
int idx, shift;
struct nfp_net_hw *hw =
NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if (reta_size != NFP_NET_CFG_RSS_ITBL_SZ) {
PMD_DRV_LOG(ERR, "The size of hash lookup table configured "
"(%d) doesn't match the number hardware can supported "
"(%d)", reta_size, NFP_NET_CFG_RSS_ITBL_SZ);
return -EINVAL;
}
/*
* Update Redirection Table. There are 128 8bit-entries which can be
* manage as 32 32bit-entries
*/
for (i = 0; i < reta_size; i += 4) {
/* Handling 4 RSS entries per loop */
idx = i / RTE_RETA_GROUP_SIZE;
shift = i % RTE_RETA_GROUP_SIZE;
mask = (uint8_t)((reta_conf[idx].mask >> shift) & 0xF);
if (!mask)
continue;
reta = 0;
/* If all 4 entries were set, don't need read RETA register */
if (mask != 0xF)
reta = nn_cfg_readl(hw, NFP_NET_CFG_RSS_ITBL + i);
for (j = 0; j < 4; j++) {
if (!(mask & (0x1 << j)))
continue;
if (mask != 0xF)
/* Clearing the entry bits */
reta &= ~(0xFF << (8 * j));
reta |= reta_conf[idx].reta[shift + j] << (8 * j);
}
nn_cfg_writel(hw, NFP_NET_CFG_RSS_ITBL + (idx * 64) + shift,
reta);
}
return 0;
}
/* Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device */
static int
nfp_net_reta_update(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
struct nfp_net_hw *hw =
NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
uint32_t update;
int ret;
if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS))
return -EINVAL;
ret = nfp_net_rss_reta_write(dev, reta_conf, reta_size);
if (ret != 0)
return ret;
update = NFP_NET_CFG_UPDATE_RSS;
if (nfp_net_reconfig(hw, hw->ctrl, update) < 0)
return -EIO;
return 0;
}
/* Query Redirection Table(RETA) of Receive Side Scaling of Ethernet device. */
static int
nfp_net_reta_query(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
uint8_t i, j, mask;
int idx, shift;
uint32_t reta;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS))
return -EINVAL;
if (reta_size != NFP_NET_CFG_RSS_ITBL_SZ) {
PMD_DRV_LOG(ERR, "The size of hash lookup table configured "
"(%d) doesn't match the number hardware can supported "
"(%d)", reta_size, NFP_NET_CFG_RSS_ITBL_SZ);
return -EINVAL;
}
/*
* Reading Redirection Table. There are 128 8bit-entries which can be
* manage as 32 32bit-entries
*/
for (i = 0; i < reta_size; i += 4) {
/* Handling 4 RSS entries per loop */
idx = i / RTE_RETA_GROUP_SIZE;
shift = i % RTE_RETA_GROUP_SIZE;
mask = (uint8_t)((reta_conf[idx].mask >> shift) & 0xF);
if (!mask)
continue;
reta = nn_cfg_readl(hw, NFP_NET_CFG_RSS_ITBL + (idx * 64) +
shift);
for (j = 0; j < 4; j++) {
if (!(mask & (0x1 << j)))
continue;
reta_conf->reta[shift + j] =
(uint8_t)((reta >> (8 * j)) & 0xF);
}
}
return 0;
}
static int
nfp_net_rss_hash_write(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
struct nfp_net_hw *hw;
uint64_t rss_hf;
uint32_t cfg_rss_ctrl = 0;
uint8_t key;
int i;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
/* Writing the key byte a byte */
for (i = 0; i < rss_conf->rss_key_len; i++) {
memcpy(&key, &rss_conf->rss_key[i], 1);
nn_cfg_writeb(hw, NFP_NET_CFG_RSS_KEY + i, key);
}
rss_hf = rss_conf->rss_hf;
if (rss_hf & ETH_RSS_IPV4)
cfg_rss_ctrl |= NFP_NET_CFG_RSS_IPV4;
if (rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
cfg_rss_ctrl |= NFP_NET_CFG_RSS_IPV4_TCP;
if (rss_hf & ETH_RSS_NONFRAG_IPV4_UDP)
cfg_rss_ctrl |= NFP_NET_CFG_RSS_IPV4_UDP;
if (rss_hf & ETH_RSS_IPV6)
cfg_rss_ctrl |= NFP_NET_CFG_RSS_IPV6;
if (rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
cfg_rss_ctrl |= NFP_NET_CFG_RSS_IPV6_TCP;
if (rss_hf & ETH_RSS_NONFRAG_IPV6_UDP)
cfg_rss_ctrl |= NFP_NET_CFG_RSS_IPV6_UDP;
cfg_rss_ctrl |= NFP_NET_CFG_RSS_MASK;
cfg_rss_ctrl |= NFP_NET_CFG_RSS_TOEPLITZ;
/* configuring where to apply the RSS hash */
nn_cfg_writel(hw, NFP_NET_CFG_RSS_CTRL, cfg_rss_ctrl);
/* Writing the key size */
nn_cfg_writeb(hw, NFP_NET_CFG_RSS_KEY_SZ, rss_conf->rss_key_len);
return 0;
}
static int
nfp_net_rss_hash_update(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
uint32_t update;
uint64_t rss_hf;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
rss_hf = rss_conf->rss_hf;
/* Checking if RSS is enabled */
if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS)) {
if (rss_hf != 0) { /* Enable RSS? */
PMD_DRV_LOG(ERR, "RSS unsupported");
return -EINVAL;
}
return 0; /* Nothing to do */
}
if (rss_conf->rss_key_len > NFP_NET_CFG_RSS_KEY_SZ) {
PMD_DRV_LOG(ERR, "hash key too long");
return -EINVAL;
}
nfp_net_rss_hash_write(dev, rss_conf);
update = NFP_NET_CFG_UPDATE_RSS;
if (nfp_net_reconfig(hw, hw->ctrl, update) < 0)
return -EIO;
return 0;
}
static int
nfp_net_rss_hash_conf_get(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
uint64_t rss_hf;
uint32_t cfg_rss_ctrl;
uint8_t key;
int i;
struct nfp_net_hw *hw;
hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS))
return -EINVAL;
rss_hf = rss_conf->rss_hf;
cfg_rss_ctrl = nn_cfg_readl(hw, NFP_NET_CFG_RSS_CTRL);
if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV4)
rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_NONFRAG_IPV4_UDP;
if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV4_TCP)
rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP;
if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV6_TCP)
rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP;
if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV4_UDP)
rss_hf |= ETH_RSS_NONFRAG_IPV4_UDP;
if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV6_UDP)
rss_hf |= ETH_RSS_NONFRAG_IPV6_UDP;
if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV6)
rss_hf |= ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_NONFRAG_IPV6_UDP;
/* Reading the key size */
rss_conf->rss_key_len = nn_cfg_readl(hw, NFP_NET_CFG_RSS_KEY_SZ);
/* Reading the key byte a byte */
for (i = 0; i < rss_conf->rss_key_len; i++) {
key = nn_cfg_readb(hw, NFP_NET_CFG_RSS_KEY + i);
memcpy(&rss_conf->rss_key[i], &key, 1);
}
return 0;
}
static int
nfp_net_rss_config_default(struct rte_eth_dev *dev)
{
struct rte_eth_conf *dev_conf;
struct rte_eth_rss_conf rss_conf;
struct rte_eth_rss_reta_entry64 nfp_reta_conf[2];
uint16_t rx_queues = dev->data->nb_rx_queues;
uint16_t queue;
int i, j, ret;
PMD_DRV_LOG(INFO, "setting default RSS conf for %u queues",
rx_queues);
nfp_reta_conf[0].mask = ~0x0;
nfp_reta_conf[1].mask = ~0x0;
queue = 0;
for (i = 0; i < 0x40; i += 8) {
for (j = i; j < (i + 8); j++) {
nfp_reta_conf[0].reta[j] = queue;
nfp_reta_conf[1].reta[j] = queue++;
queue %= rx_queues;
}
}
ret = nfp_net_rss_reta_write(dev, nfp_reta_conf, 0x80);
if (ret != 0)
return ret;
dev_conf = &dev->data->dev_conf;
if (!dev_conf) {
PMD_DRV_LOG(INFO, "wrong rss conf");
return -EINVAL;
}
rss_conf = dev_conf->rx_adv_conf.rss_conf;
ret = nfp_net_rss_hash_write(dev, &rss_conf);
return ret;
}
/* Initialise and register driver with DPDK Application */
static const struct eth_dev_ops nfp_net_eth_dev_ops = {
.dev_configure = nfp_net_configure,
.dev_start = nfp_net_start,
.dev_stop = nfp_net_stop,
.dev_close = nfp_net_close,
.promiscuous_enable = nfp_net_promisc_enable,
.promiscuous_disable = nfp_net_promisc_disable,
.link_update = nfp_net_link_update,
.stats_get = nfp_net_stats_get,
.stats_reset = nfp_net_stats_reset,
.dev_infos_get = nfp_net_infos_get,
.dev_supported_ptypes_get = nfp_net_supported_ptypes_get,
.mtu_set = nfp_net_dev_mtu_set,
.mac_addr_set = nfp_set_mac_addr,
.vlan_offload_set = nfp_net_vlan_offload_set,
.reta_update = nfp_net_reta_update,
.reta_query = nfp_net_reta_query,
.rss_hash_update = nfp_net_rss_hash_update,
.rss_hash_conf_get = nfp_net_rss_hash_conf_get,
.rx_queue_setup = nfp_net_rx_queue_setup,
.rx_queue_release = nfp_net_rx_queue_release,
.rx_queue_count = nfp_net_rx_queue_count,
.tx_queue_setup = nfp_net_tx_queue_setup,
.tx_queue_release = nfp_net_tx_queue_release,
.rx_queue_intr_enable = nfp_rx_queue_intr_enable,
.rx_queue_intr_disable = nfp_rx_queue_intr_disable,
};
/*
* All eth_dev created got its private data, but before nfp_net_init, that
* private data is referencing private data for all the PF ports. This is due
* to how the vNIC bars are mapped based on first port, so all ports need info
* about port 0 private data. Inside nfp_net_init the private data pointer is
* changed to the right address for each port once the bars have been mapped.
*
* This functions helps to find out which port and therefore which offset
* inside the private data array to use.
*/
static int
get_pf_port_number(char *name)
{
char *pf_str = name;
int size = 0;
while ((*pf_str != '_') && (*pf_str != '\0') && (size++ < 30))
pf_str++;
if (size == 30)
/*
* This should not happen at all and it would mean major
* implementation fault.
*/
rte_panic("nfp_net: problem with pf device name\n");
/* Expecting _portX with X within [0,7] */
pf_str += 5;
return (int)strtol(pf_str, NULL, 10);
}
static int
nfp_net_init(struct rte_eth_dev *eth_dev)
{
struct rte_pci_device *pci_dev;
struct nfp_net_hw *hw, *hwport0;
uint64_t tx_bar_off = 0, rx_bar_off = 0;
uint32_t start_q;
int stride = 4;
int port = 0;
int err;
PMD_INIT_FUNC_TRACE();
pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
/* NFP can not handle DMA addresses requiring more than 40 bits */
if (rte_mem_check_dma_mask(40)) {
RTE_LOG(ERR, PMD, "device %s can not be used:",
pci_dev->device.name);
RTE_LOG(ERR, PMD, "\trestricted dma mask to 40 bits!\n");
return -ENODEV;
};
if ((pci_dev->id.device_id == PCI_DEVICE_ID_NFP4000_PF_NIC) ||
(pci_dev->id.device_id == PCI_DEVICE_ID_NFP6000_PF_NIC)) {
port = get_pf_port_number(eth_dev->data->name);
if (port < 0 || port > 7) {
PMD_DRV_LOG(ERR, "Port value is wrong");
return -ENODEV;
}
PMD_INIT_LOG(DEBUG, "Working with PF port value %d", port);
/* This points to port 0 private data */
hwport0 = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
/* This points to the specific port private data */
hw = &hwport0[port];
} else {
hw = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
hwport0 = 0;
}
eth_dev->dev_ops = &nfp_net_eth_dev_ops;
eth_dev->rx_pkt_burst = &nfp_net_recv_pkts;
eth_dev->tx_pkt_burst = &nfp_net_xmit_pkts;
/* For secondary processes, the primary has done all the work */
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
rte_eth_copy_pci_info(eth_dev, pci_dev);
hw->device_id = pci_dev->id.device_id;
hw->vendor_id = pci_dev->id.vendor_id;
hw->subsystem_device_id = pci_dev->id.subsystem_device_id;
hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
PMD_INIT_LOG(DEBUG, "nfp_net: device (%u:%u) %u:%u:%u:%u",
pci_dev->id.vendor_id, pci_dev->id.device_id,
pci_dev->addr.domain, pci_dev->addr.bus,
pci_dev->addr.devid, pci_dev->addr.function);
hw->ctrl_bar = (uint8_t *)pci_dev->mem_resource[0].addr;
if (hw->ctrl_bar == NULL) {
PMD_DRV_LOG(ERR,
"hw->ctrl_bar is NULL. BAR0 not configured");
return -ENODEV;
}
if (hw->is_pf && port == 0) {
hw->ctrl_bar = nfp_rtsym_map(hw->sym_tbl, "_pf0_net_bar0",
hw->total_ports * 32768,
&hw->ctrl_area);
if (!hw->ctrl_bar) {
printf("nfp_rtsym_map fails for _pf0_net_ctrl_bar");
return -EIO;
}
PMD_INIT_LOG(DEBUG, "ctrl bar: %p", hw->ctrl_bar);
}
if (port > 0) {
if (!hwport0->ctrl_bar)
return -ENODEV;
/* address based on port0 offset */
hw->ctrl_bar = hwport0->ctrl_bar +
(port * NFP_PF_CSR_SLICE_SIZE);
}
PMD_INIT_LOG(DEBUG, "ctrl bar: %p", hw->ctrl_bar);
hw->max_rx_queues = nn_cfg_readl(hw, NFP_NET_CFG_MAX_RXRINGS);
hw->max_tx_queues = nn_cfg_readl(hw, NFP_NET_CFG_MAX_TXRINGS);
/* Work out where in the BAR the queues start. */
switch (pci_dev->id.device_id) {
case PCI_DEVICE_ID_NFP4000_PF_NIC:
case PCI_DEVICE_ID_NFP6000_PF_NIC:
case PCI_DEVICE_ID_NFP6000_VF_NIC:
start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_TXQ);
tx_bar_off = start_q * NFP_QCP_QUEUE_ADDR_SZ;
start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_RXQ);
rx_bar_off = start_q * NFP_QCP_QUEUE_ADDR_SZ;
break;
default:
PMD_DRV_LOG(ERR, "nfp_net: no device ID matching");
err = -ENODEV;
goto dev_err_ctrl_map;
}
PMD_INIT_LOG(DEBUG, "tx_bar_off: 0x%" PRIx64 "", tx_bar_off);
PMD_INIT_LOG(DEBUG, "rx_bar_off: 0x%" PRIx64 "", rx_bar_off);
if (hw->is_pf && port == 0) {
/* configure access to tx/rx vNIC BARs */
hwport0->hw_queues = nfp_cpp_map_area(hw->cpp, 0, 0,
NFP_PCIE_QUEUE(0),
NFP_QCP_QUEUE_AREA_SZ,
&hw->hwqueues_area);
if (!hwport0->hw_queues) {
printf("nfp_rtsym_map fails for net.qc");
err = -EIO;
goto dev_err_ctrl_map;
}
PMD_INIT_LOG(DEBUG, "tx/rx bar address: 0x%p",
hwport0->hw_queues);
}
if (hw->is_pf) {
hw->tx_bar = hwport0->hw_queues + tx_bar_off;
hw->rx_bar = hwport0->hw_queues + rx_bar_off;
eth_dev->data->dev_private = hw;
} else {
hw->tx_bar = (uint8_t *)pci_dev->mem_resource[2].addr +
tx_bar_off;
hw->rx_bar = (uint8_t *)pci_dev->mem_resource[2].addr +
rx_bar_off;
}
PMD_INIT_LOG(DEBUG, "ctrl_bar: %p, tx_bar: %p, rx_bar: %p",
hw->ctrl_bar, hw->tx_bar, hw->rx_bar);
nfp_net_cfg_queue_setup(hw);
/* Get some of the read-only fields from the config BAR */
hw->ver = nn_cfg_readl(hw, NFP_NET_CFG_VERSION);
hw->cap = nn_cfg_readl(hw, NFP_NET_CFG_CAP);
hw->max_mtu = nn_cfg_readl(hw, NFP_NET_CFG_MAX_MTU);
hw->mtu = ETHER_MTU;
/* VLAN insertion is incompatible with LSOv2 */
if (hw->cap & NFP_NET_CFG_CTRL_LSO2)
hw->cap &= ~NFP_NET_CFG_CTRL_TXVLAN;
if (NFD_CFG_MAJOR_VERSION_of(hw->ver) < 2)
hw->rx_offset = NFP_NET_RX_OFFSET;
else
hw->rx_offset = nn_cfg_readl(hw, NFP_NET_CFG_RX_OFFSET_ADDR);
PMD_INIT_LOG(INFO, "VER: %u.%u, Maximum supported MTU: %d",
NFD_CFG_MAJOR_VERSION_of(hw->ver),
NFD_CFG_MINOR_VERSION_of(hw->ver), hw->max_mtu);
PMD_INIT_LOG(INFO, "CAP: %#x, %s%s%s%s%s%s%s%s%s%s%s%s%s%s", hw->cap,
hw->cap & NFP_NET_CFG_CTRL_PROMISC ? "PROMISC " : "",
hw->cap & NFP_NET_CFG_CTRL_L2BC ? "L2BCFILT " : "",
hw->cap & NFP_NET_CFG_CTRL_L2MC ? "L2MCFILT " : "",
hw->cap & NFP_NET_CFG_CTRL_RXCSUM ? "RXCSUM " : "",
hw->cap & NFP_NET_CFG_CTRL_TXCSUM ? "TXCSUM " : "",
hw->cap & NFP_NET_CFG_CTRL_RXVLAN ? "RXVLAN " : "",
hw->cap & NFP_NET_CFG_CTRL_TXVLAN ? "TXVLAN " : "",
hw->cap & NFP_NET_CFG_CTRL_SCATTER ? "SCATTER " : "",
hw->cap & NFP_NET_CFG_CTRL_GATHER ? "GATHER " : "",
hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR ? "LIVE_ADDR " : "",
hw->cap & NFP_NET_CFG_CTRL_LSO ? "TSO " : "",
hw->cap & NFP_NET_CFG_CTRL_LSO2 ? "TSOv2 " : "",
hw->cap & NFP_NET_CFG_CTRL_RSS ? "RSS " : "",
hw->cap & NFP_NET_CFG_CTRL_RSS2 ? "RSSv2 " : "");
hw->ctrl = 0;
hw->stride_rx = stride;
hw->stride_tx = stride;
PMD_INIT_LOG(INFO, "max_rx_queues: %u, max_tx_queues: %u",
hw->max_rx_queues, hw->max_tx_queues);
/* Initializing spinlock for reconfigs */
rte_spinlock_init(&hw->reconfig_lock);
/* Allocating memory for mac addr */
eth_dev->data->mac_addrs = rte_zmalloc("mac_addr", ETHER_ADDR_LEN, 0);
if (eth_dev->data->mac_addrs == NULL) {
PMD_INIT_LOG(ERR, "Failed to space for MAC address");
err = -ENOMEM;
goto dev_err_queues_map;
}
if (hw->is_pf) {
nfp_net_pf_read_mac(hwport0, port);
nfp_net_write_mac(hw, (uint8_t *)&hw->mac_addr);
} else {
nfp_net_vf_read_mac(hw);
}
if (!is_valid_assigned_ether_addr((struct ether_addr *)&hw->mac_addr)) {
PMD_INIT_LOG(INFO, "Using random mac address for port %d",
port);
/* Using random mac addresses for VFs */
eth_random_addr(&hw->mac_addr[0]);
nfp_net_write_mac(hw, (uint8_t *)&hw->mac_addr);
}
/* Copying mac address to DPDK eth_dev struct */
ether_addr_copy((struct ether_addr *)hw->mac_addr,
&eth_dev->data->mac_addrs[0]);
if (!(hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR))
eth_dev->data->dev_flags |= RTE_ETH_DEV_NOLIVE_MAC_ADDR;
PMD_INIT_LOG(INFO, "port %d VendorID=0x%x DeviceID=0x%x "
"mac=%02x:%02x:%02x:%02x:%02x:%02x",
eth_dev->data->port_id, pci_dev->id.vendor_id,
pci_dev->id.device_id,
hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
/* Registering LSC interrupt handler */
rte_intr_callback_register(&pci_dev->intr_handle,
nfp_net_dev_interrupt_handler,
(void *)eth_dev);
/* Telling the firmware about the LSC interrupt entry */
nn_cfg_writeb(hw, NFP_NET_CFG_LSC, NFP_NET_IRQ_LSC_IDX);
/* Recording current stats counters values */
nfp_net_stats_reset(eth_dev);
}
return 0;
dev_err_queues_map:
nfp_cpp_area_free(hw->hwqueues_area);
dev_err_ctrl_map:
nfp_cpp_area_free(hw->ctrl_area);
return err;
}
#define NFP_CPP_MEMIO_BOUNDARY (1 << 20)
/*
* Serving a write request to NFP from host programs. The request
* sends the write size and the CPP target. The bridge makes use
* of CPP interface handler configured by the PMD setup.
*/
static int
nfp_cpp_bridge_serve_write(int sockfd, struct nfp_cpp *cpp)
{
struct nfp_cpp_area *area;
off_t offset, nfp_offset;
uint32_t cpp_id, pos, len;
uint32_t tmpbuf[16];
size_t count, curlen, totlen = 0;
int err = 0;
PMD_CPP_LOG(DEBUG, "%s: offset size %lu, count_size: %lu\n", __func__,
sizeof(off_t), sizeof(size_t));
/* Reading the count param */
err = recv(sockfd, &count, sizeof(off_t), 0);
if (err != sizeof(off_t))
return -EINVAL;
curlen = count;
/* Reading the offset param */
err = recv(sockfd, &offset, sizeof(off_t), 0);
if (err != sizeof(off_t))
return -EINVAL;
/* Obtain target's CPP ID and offset in target */
cpp_id = (offset >> 40) << 8;
nfp_offset = offset & ((1ull << 40) - 1);
PMD_CPP_LOG(DEBUG, "%s: count %lu and offset %ld\n", __func__, count,
offset);
PMD_CPP_LOG(DEBUG, "%s: cpp_id %08x and nfp_offset %ld\n", __func__,
cpp_id, nfp_offset);
/* Adjust length if not aligned */
if (((nfp_offset + (off_t)count - 1) & ~(NFP_CPP_MEMIO_BOUNDARY - 1)) !=
(nfp_offset & ~(NFP_CPP_MEMIO_BOUNDARY - 1))) {
curlen = NFP_CPP_MEMIO_BOUNDARY -
(nfp_offset & (NFP_CPP_MEMIO_BOUNDARY - 1));
}
while (count > 0) {
/* configure a CPP PCIe2CPP BAR for mapping the CPP target */
area = nfp_cpp_area_alloc_with_name(cpp, cpp_id, "nfp.cdev",
nfp_offset, curlen);
if (!area) {
RTE_LOG(ERR, PMD, "%s: area alloc fail\n", __func__);
return -EIO;
}
/* mapping the target */
err = nfp_cpp_area_acquire(area);
if (err < 0) {
RTE_LOG(ERR, PMD, "area acquire failed\n");
nfp_cpp_area_free(area);
return -EIO;
}
for (pos = 0; pos < curlen; pos += len) {
len = curlen - pos;
if (len > sizeof(tmpbuf))
len = sizeof(tmpbuf);
PMD_CPP_LOG(DEBUG, "%s: Receive %u of %lu\n", __func__,
len, count);
err = recv(sockfd, tmpbuf, len, MSG_WAITALL);
if (err != (int)len) {
RTE_LOG(ERR, PMD,
"%s: error when receiving, %d of %lu\n",
__func__, err, count);
nfp_cpp_area_release(area);
nfp_cpp_area_free(area);
return -EIO;
}
err = nfp_cpp_area_write(area, pos, tmpbuf, len);
if (err < 0) {
RTE_LOG(ERR, PMD, "nfp_cpp_area_write error\n");
nfp_cpp_area_release(area);
nfp_cpp_area_free(area);
return -EIO;
}
}
nfp_offset += pos;
totlen += pos;
nfp_cpp_area_release(area);
nfp_cpp_area_free(area);
count -= pos;
curlen = (count > NFP_CPP_MEMIO_BOUNDARY) ?
NFP_CPP_MEMIO_BOUNDARY : count;
}
return 0;
}
/*
* Serving a read request to NFP from host programs. The request
* sends the read size and the CPP target. The bridge makes use
* of CPP interface handler configured by the PMD setup. The read
* data is sent to the requester using the same socket.
*/
static int
nfp_cpp_bridge_serve_read(int sockfd, struct nfp_cpp *cpp)
{
struct nfp_cpp_area *area;
off_t offset, nfp_offset;
uint32_t cpp_id, pos, len;
uint32_t tmpbuf[16];
size_t count, curlen, totlen = 0;
int err = 0;
PMD_CPP_LOG(DEBUG, "%s: offset size %lu, count_size: %lu\n", __func__,
sizeof(off_t), sizeof(size_t));
/* Reading the count param */
err = recv(sockfd, &count, sizeof(off_t), 0);
if (err != sizeof(off_t))
return -EINVAL;
curlen = count;
/* Reading the offset param */
err = recv(sockfd, &offset, sizeof(off_t), 0);
if (err != sizeof(off_t))
return -EINVAL;
/* Obtain target's CPP ID and offset in target */
cpp_id = (offset >> 40) << 8;
nfp_offset = offset & ((1ull << 40) - 1);
PMD_CPP_LOG(DEBUG, "%s: count %lu and offset %ld\n", __func__, count,
offset);
PMD_CPP_LOG(DEBUG, "%s: cpp_id %08x and nfp_offset %ld\n", __func__,
cpp_id, nfp_offset);
/* Adjust length if not aligned */
if (((nfp_offset + (off_t)count - 1) & ~(NFP_CPP_MEMIO_BOUNDARY - 1)) !=
(nfp_offset & ~(NFP_CPP_MEMIO_BOUNDARY - 1))) {
curlen = NFP_CPP_MEMIO_BOUNDARY -
(nfp_offset & (NFP_CPP_MEMIO_BOUNDARY - 1));
}
while (count > 0) {
area = nfp_cpp_area_alloc_with_name(cpp, cpp_id, "nfp.cdev",
nfp_offset, curlen);
if (!area) {
RTE_LOG(ERR, PMD, "%s: area alloc failed\n", __func__);
return -EIO;
}
err = nfp_cpp_area_acquire(area);
if (err < 0) {
RTE_LOG(ERR, PMD, "area acquire failed\n");
nfp_cpp_area_free(area);
return -EIO;
}
for (pos = 0; pos < curlen; pos += len) {
len = curlen - pos;
if (len > sizeof(tmpbuf))
len = sizeof(tmpbuf);
err = nfp_cpp_area_read(area, pos, tmpbuf, len);
if (err < 0) {
RTE_LOG(ERR, PMD, "nfp_cpp_area_read error\n");
nfp_cpp_area_release(area);
nfp_cpp_area_free(area);
return -EIO;
}
PMD_CPP_LOG(DEBUG, "%s: sending %u of %lu\n", __func__,
len, count);
err = send(sockfd, tmpbuf, len, 0);
if (err != (int)len) {
RTE_LOG(ERR, PMD,
"%s: error when sending: %d of %lu\n",
__func__, err, count);
nfp_cpp_area_release(area);
nfp_cpp_area_free(area);
return -EIO;
}
}
nfp_offset += pos;
totlen += pos;
nfp_cpp_area_release(area);
nfp_cpp_area_free(area);
count -= pos;
curlen = (count > NFP_CPP_MEMIO_BOUNDARY) ?
NFP_CPP_MEMIO_BOUNDARY : count;
}
return 0;
}
#define NFP_IOCTL 'n'
#define NFP_IOCTL_CPP_IDENTIFICATION _IOW(NFP_IOCTL, 0x8f, uint32_t)
/*
* Serving a ioctl command from host NFP tools. This usually goes to
* a kernel driver char driver but it is not available when the PF is
* bound to the PMD. Currently just one ioctl command is served and it
* does not require any CPP access at all.
*/
static int
nfp_cpp_bridge_serve_ioctl(int sockfd, struct nfp_cpp *cpp)
{
uint32_t cmd, ident_size, tmp;
int err;
/* Reading now the IOCTL command */
err = recv(sockfd, &cmd, 4, 0);
if (err != 4) {
RTE_LOG(ERR, PMD, "%s: read error from socket\n", __func__);
return -EIO;
}
/* Only supporting NFP_IOCTL_CPP_IDENTIFICATION */
if (cmd != NFP_IOCTL_CPP_IDENTIFICATION) {
RTE_LOG(ERR, PMD, "%s: unknown cmd %d\n", __func__, cmd);
return -EINVAL;
}
err = recv(sockfd, &ident_size, 4, 0);
if (err != 4) {
RTE_LOG(ERR, PMD, "%s: read error from socket\n", __func__);
return -EIO;
}
tmp = nfp_cpp_model(cpp);
PMD_CPP_LOG(DEBUG, "%s: sending NFP model %08x\n", __func__, tmp);
err = send(sockfd, &tmp, 4, 0);
if (err != 4) {
RTE_LOG(ERR, PMD, "%s: error writing to socket\n", __func__);
return -EIO;
}
tmp = cpp->interface;
PMD_CPP_LOG(DEBUG, "%s: sending NFP interface %08x\n", __func__, tmp);
err = send(sockfd, &tmp, 4, 0);
if (err != 4) {
RTE_LOG(ERR, PMD, "%s: error writing to socket\n", __func__);
return -EIO;
}
return 0;
}
#define NFP_BRIDGE_OP_READ 20
#define NFP_BRIDGE_OP_WRITE 30
#define NFP_BRIDGE_OP_IOCTL 40
/*
* This is the code to be executed by a service core. The CPP bridge interface
* is based on a unix socket and requests usually received by a kernel char
* driver, read, write and ioctl, are handled by the CPP bridge. NFP host tools
* can be executed with a wrapper library and LD_LIBRARY being completely
* unaware of the CPP bridge performing the NFP kernel char driver for CPP
* accesses.
*/
static int32_t
nfp_cpp_bridge_service_func(void *args)
{
struct sockaddr address;
struct nfp_cpp *cpp = args;
int sockfd, datafd, op, ret;
unlink("/tmp/nfp_cpp");
sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
if (sockfd < 0) {
RTE_LOG(ERR, PMD, "%s: socket creation error. Service failed\n",
__func__);
return -EIO;
}
memset(&address, 0, sizeof(struct sockaddr));
address.sa_family = AF_UNIX;
strcpy(address.sa_data, "/tmp/nfp_cpp");
ret = bind(sockfd, (const struct sockaddr *)&address,
sizeof(struct sockaddr));
if (ret < 0) {
RTE_LOG(ERR, PMD, "%s: bind error (%d). Service failed\n",
__func__, errno);
return ret;
}
ret = listen(sockfd, 20);
if (ret < 0) {
RTE_LOG(ERR, PMD, "%s: listen error(%d). Service failed\n",
__func__, errno);
return ret;
}
for (;;) {
datafd = accept(sockfd, NULL, NULL);
if (datafd < 0) {
RTE_LOG(ERR, PMD, "%s: accept call error (%d)\n",
__func__, errno);
RTE_LOG(ERR, PMD, "%s: service failed\n", __func__);
return -EIO;
}
while (1) {
ret = recv(datafd, &op, 4, 0);
if (ret <= 0) {
PMD_CPP_LOG(DEBUG, "%s: socket close\n",
__func__);
break;
}
PMD_CPP_LOG(DEBUG, "%s: getting op %u\n", __func__, op);
if (op == NFP_BRIDGE_OP_READ)
nfp_cpp_bridge_serve_read(datafd, cpp);
if (op == NFP_BRIDGE_OP_WRITE)
nfp_cpp_bridge_serve_write(datafd, cpp);
if (op == NFP_BRIDGE_OP_IOCTL)
nfp_cpp_bridge_serve_ioctl(datafd, cpp);
if (op == 0)
break;
}
close(datafd);
}
close(sockfd);
return 0;
}
static int
nfp_pf_create_dev(struct rte_pci_device *dev, int port, int ports,
struct nfp_cpp *cpp, struct nfp_hwinfo *hwinfo,
int phys_port, struct nfp_rtsym_table *sym_tbl, void **priv)
{
struct rte_eth_dev *eth_dev;
struct nfp_net_hw *hw = NULL;
char *port_name;
struct rte_service_spec service;
int retval;
port_name = rte_zmalloc("nfp_pf_port_name", 100, 0);
if (!port_name)
return -ENOMEM;
if (ports > 1)
sprintf(port_name, "%s_port%d", dev->device.name, port);
else
sprintf(port_name, "%s", dev->device.name);
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
eth_dev = rte_eth_dev_allocate(port_name);
if (!eth_dev) {
rte_free(port_name);
return -ENODEV;
}
if (port == 0) {
*priv = rte_zmalloc(port_name,
sizeof(struct nfp_net_adapter) *
ports, RTE_CACHE_LINE_SIZE);
if (!*priv) {
rte_free(port_name);
rte_eth_dev_release_port(eth_dev);
return -ENOMEM;
}
}
eth_dev->data->dev_private = *priv;
/*
* dev_private pointing to port0 dev_private because we need
* to configure vNIC bars based on port0 at nfp_net_init.
* Then dev_private is adjusted per port.
*/
hw = (struct nfp_net_hw *)(eth_dev->data->dev_private) + port;
hw->cpp = cpp;
hw->hwinfo = hwinfo;
hw->sym_tbl = sym_tbl;
hw->pf_port_idx = phys_port;
hw->is_pf = 1;
if (ports > 1)
hw->pf_multiport_enabled = 1;
hw->total_ports = ports;
} else {
eth_dev = rte_eth_dev_attach_secondary(port_name);
if (!eth_dev) {
RTE_LOG(ERR, EAL, "secondary process attach failed, "
"ethdev doesn't exist");
rte_free(port_name);
return -ENODEV;
}
eth_dev->process_private = cpp;
}
eth_dev->device = &dev->device;
rte_eth_copy_pci_info(eth_dev, dev);
retval = nfp_net_init(eth_dev);
if (retval) {
retval = -ENODEV;
goto probe_failed;
} else {
rte_eth_dev_probing_finish(eth_dev);
}
rte_free(port_name);
if (port == 0) {
/*
* The rte_service needs to be created just once per PMD.
* And the cpp handler needs to be linked to the service.
* Secondary processes will be used for debugging DPDK apps
* when requiring to use the CPP interface for accessing NFP
* components. And the cpp handler for secondary processes is
* available at this point.
*/
memset(&service, 0, sizeof(struct rte_service_spec));
snprintf(service.name, sizeof(service.name), "nfp_cpp_service");
service.callback = nfp_cpp_bridge_service_func;
service.callback_userdata = (void *)cpp;
hw = (struct nfp_net_hw *)(eth_dev->data->dev_private);
if (rte_service_component_register(&service,
&hw->nfp_cpp_service_id))
RTE_LOG(ERR, PMD, "NFP CPP bridge service register() failed");
else
RTE_LOG(DEBUG, PMD, "NFP CPP bridge service registered");
}
return retval;
probe_failed:
rte_free(port_name);
/* free ports private data if primary process */
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
rte_free(eth_dev->data->dev_private);
rte_eth_dev_release_port(eth_dev);
return retval;
}
#define DEFAULT_FW_PATH "/lib/firmware/netronome"
static int
nfp_fw_upload(struct rte_pci_device *dev, struct nfp_nsp *nsp, char *card)
{
struct nfp_cpp *cpp = nsp->cpp;
int fw_f;
char *fw_buf;
char fw_name[125];
char serial[40];
struct stat file_stat;
off_t fsize, bytes;
/* Looking for firmware file in order of priority */
/* First try to find a firmware image specific for this device */
sprintf(serial, "serial-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x",
cpp->serial[0], cpp->serial[1], cpp->serial[2], cpp->serial[3],
cpp->serial[4], cpp->serial[5], cpp->interface >> 8,
cpp->interface & 0xff);
sprintf(fw_name, "%s/%s.nffw", DEFAULT_FW_PATH, serial);
PMD_DRV_LOG(DEBUG, "Trying with fw file: %s", fw_name);
fw_f = open(fw_name, O_RDONLY);
if (fw_f > 0)
goto read_fw;
/* Then try the PCI name */
sprintf(fw_name, "%s/pci-%s.nffw", DEFAULT_FW_PATH, dev->device.name);
PMD_DRV_LOG(DEBUG, "Trying with fw file: %s", fw_name);
fw_f = open(fw_name, O_RDONLY);
if (fw_f > 0)
goto read_fw;
/* Finally try the card type and media */
sprintf(fw_name, "%s/%s", DEFAULT_FW_PATH, card);
PMD_DRV_LOG(DEBUG, "Trying with fw file: %s", fw_name);
fw_f = open(fw_name, O_RDONLY);
if (fw_f < 0) {
PMD_DRV_LOG(INFO, "Firmware file %s not found.", fw_name);
return -ENOENT;
}
read_fw:
if (fstat(fw_f, &file_stat) < 0) {
PMD_DRV_LOG(INFO, "Firmware file %s size is unknown", fw_name);
close(fw_f);
return -ENOENT;
}
fsize = file_stat.st_size;
PMD_DRV_LOG(INFO, "Firmware file found at %s with size: %" PRIu64 "",
fw_name, (uint64_t)fsize);
fw_buf = malloc((size_t)fsize);
if (!fw_buf) {
PMD_DRV_LOG(INFO, "malloc failed for fw buffer");
close(fw_f);
return -ENOMEM;
}
memset(fw_buf, 0, fsize);
bytes = read(fw_f, fw_buf, fsize);
if (bytes != fsize) {
PMD_DRV_LOG(INFO, "Reading fw to buffer failed."
"Just %" PRIu64 " of %" PRIu64 " bytes read",
(uint64_t)bytes, (uint64_t)fsize);
free(fw_buf);
close(fw_f);
return -EIO;
}
PMD_DRV_LOG(INFO, "Uploading the firmware ...");
nfp_nsp_load_fw(nsp, fw_buf, bytes);
PMD_DRV_LOG(INFO, "Done");
free(fw_buf);
close(fw_f);
return 0;
}
static int
nfp_fw_setup(struct rte_pci_device *dev, struct nfp_cpp *cpp,
struct nfp_eth_table *nfp_eth_table, struct nfp_hwinfo *hwinfo)
{
struct nfp_nsp *nsp;
const char *nfp_fw_model;
char card_desc[100];
int err = 0;
nfp_fw_model = nfp_hwinfo_lookup(hwinfo, "assembly.partno");
if (nfp_fw_model) {
PMD_DRV_LOG(INFO, "firmware model found: %s", nfp_fw_model);
} else {
PMD_DRV_LOG(ERR, "firmware model NOT found");
return -EIO;
}
if (nfp_eth_table->count == 0 || nfp_eth_table->count > 8) {
PMD_DRV_LOG(ERR, "NFP ethernet table reports wrong ports: %u",
nfp_eth_table->count);
return -EIO;
}
PMD_DRV_LOG(INFO, "NFP ethernet port table reports %u ports",
nfp_eth_table->count);
PMD_DRV_LOG(INFO, "Port speed: %u", nfp_eth_table->ports[0].speed);
sprintf(card_desc, "nic_%s_%dx%d.nffw", nfp_fw_model,
nfp_eth_table->count, nfp_eth_table->ports[0].speed / 1000);
nsp = nfp_nsp_open(cpp);
if (!nsp) {
PMD_DRV_LOG(ERR, "NFP error when obtaining NSP handle");
return -EIO;
}
nfp_nsp_device_soft_reset(nsp);
err = nfp_fw_upload(dev, nsp, card_desc);
nfp_nsp_close(nsp);
return err;
}
static int nfp_pf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
struct rte_pci_device *dev)
{
struct nfp_cpp *cpp;
struct nfp_hwinfo *hwinfo;
struct nfp_rtsym_table *sym_tbl;
struct nfp_eth_table *nfp_eth_table = NULL;
int total_ports;
void *priv = 0;
int ret = -ENODEV;
int err;
int i;
if (!dev)
return ret;
/*
* When device bound to UIO, the device could be used, by mistake,
* by two DPDK apps, and the UIO driver does not avoid it. This
* could lead to a serious problem when configuring the NFP CPP
* interface. Here we avoid this telling to the CPP init code to
* use a lock file if UIO is being used.
*/
if (dev->kdrv == RTE_KDRV_VFIO)
cpp = nfp_cpp_from_device_name(dev, 0);
else
cpp = nfp_cpp_from_device_name(dev, 1);
if (!cpp) {
PMD_DRV_LOG(ERR, "A CPP handle can not be obtained");
ret = -EIO;
goto error;
}
hwinfo = nfp_hwinfo_read(cpp);
if (!hwinfo) {
PMD_DRV_LOG(ERR, "Error reading hwinfo table");
return -EIO;
}
nfp_eth_table = nfp_eth_read_ports(cpp);
if (!nfp_eth_table) {
PMD_DRV_LOG(ERR, "Error reading NFP ethernet table");
return -EIO;
}
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
if (nfp_fw_setup(dev, cpp, nfp_eth_table, hwinfo)) {
PMD_DRV_LOG(INFO, "Error when uploading firmware");
ret = -EIO;
goto error;
}
}
/* Now the symbol table should be there */
sym_tbl = nfp_rtsym_table_read(cpp);
if (!sym_tbl) {
PMD_DRV_LOG(ERR, "Something is wrong with the firmware"
" symbol table");
ret = -EIO;
goto error;
}
total_ports = nfp_rtsym_read_le(sym_tbl, "nfd_cfg_pf0_num_ports", &err);
if (total_ports != (int)nfp_eth_table->count) {
PMD_DRV_LOG(ERR, "Inconsistent number of ports");
ret = -EIO;
goto error;
}
PMD_INIT_LOG(INFO, "Total pf ports: %d", total_ports);
if (total_ports <= 0 || total_ports > 8) {
PMD_DRV_LOG(ERR, "nfd_cfg_pf0_num_ports symbol with wrong value");
ret = -ENODEV;
goto error;
}
for (i = 0; i < total_ports; i++) {
ret = nfp_pf_create_dev(dev, i, total_ports, cpp, hwinfo,
nfp_eth_table->ports[i].index,
sym_tbl, &priv);
if (ret)
break;
}
error:
free(nfp_eth_table);
return ret;
}
int nfp_logtype_init;
int nfp_logtype_driver;
static const struct rte_pci_id pci_id_nfp_pf_net_map[] = {
{
RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME,
PCI_DEVICE_ID_NFP4000_PF_NIC)
},
{
RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME,
PCI_DEVICE_ID_NFP6000_PF_NIC)
},
{
.vendor_id = 0,
},
};
static const struct rte_pci_id pci_id_nfp_vf_net_map[] = {
{
RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME,
PCI_DEVICE_ID_NFP6000_VF_NIC)
},
{
.vendor_id = 0,
},
};
static int eth_nfp_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
struct rte_pci_device *pci_dev)
{
return rte_eth_dev_pci_generic_probe(pci_dev,
sizeof(struct nfp_net_adapter), nfp_net_init);
}
static int eth_nfp_pci_remove(struct rte_pci_device *pci_dev)
{
struct rte_eth_dev *eth_dev;
struct nfp_net_hw *hw, *hwport0;
int port = 0;
eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
if ((pci_dev->id.device_id == PCI_DEVICE_ID_NFP4000_PF_NIC) ||
(pci_dev->id.device_id == PCI_DEVICE_ID_NFP6000_PF_NIC)) {
port = get_pf_port_number(eth_dev->data->name);
/*
* hotplug is not possible with multiport PF although freeing
* data structures can be done for first port.
*/
if (port != 0)
return -ENOTSUP;
hwport0 = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
hw = &hwport0[port];
nfp_cpp_area_free(hw->ctrl_area);
nfp_cpp_area_free(hw->hwqueues_area);
free(hw->hwinfo);
free(hw->sym_tbl);
nfp_cpp_free(hw->cpp);
} else {
hw = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
}
/* hotplug is not possible with multiport PF */
if (hw->pf_multiport_enabled)
return -ENOTSUP;
return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
}
static struct rte_pci_driver rte_nfp_net_pf_pmd = {
.id_table = pci_id_nfp_pf_net_map,
.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
RTE_PCI_DRV_IOVA_AS_VA,
.probe = nfp_pf_pci_probe,
.remove = eth_nfp_pci_remove,
};
static struct rte_pci_driver rte_nfp_net_vf_pmd = {
.id_table = pci_id_nfp_vf_net_map,
.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
RTE_PCI_DRV_IOVA_AS_VA,
.probe = eth_nfp_pci_probe,
.remove = eth_nfp_pci_remove,
};
RTE_PMD_REGISTER_PCI(net_nfp_pf, rte_nfp_net_pf_pmd);
RTE_PMD_REGISTER_PCI(net_nfp_vf, rte_nfp_net_vf_pmd);
RTE_PMD_REGISTER_PCI_TABLE(net_nfp_pf, pci_id_nfp_pf_net_map);
RTE_PMD_REGISTER_PCI_TABLE(net_nfp_vf, pci_id_nfp_vf_net_map);
RTE_PMD_REGISTER_KMOD_DEP(net_nfp_pf, "* igb_uio | uio_pci_generic | vfio");
RTE_PMD_REGISTER_KMOD_DEP(net_nfp_vf, "* igb_uio | uio_pci_generic | vfio");
RTE_INIT(nfp_init_log)
{
nfp_logtype_init = rte_log_register("pmd.net.nfp.init");
if (nfp_logtype_init >= 0)
rte_log_set_level(nfp_logtype_init, RTE_LOG_NOTICE);
nfp_logtype_driver = rte_log_register("pmd.net.nfp.driver");
if (nfp_logtype_driver >= 0)
rte_log_set_level(nfp_logtype_driver, RTE_LOG_NOTICE);
}
/*
* Local variables:
* c-file-style: "Linux"
* indent-tabs-mode: t
* End:
*/
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