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43a5b7cc44596fea37a9b7ab62f49eb40c402f22
vpp/src/plugins/dpdk/device/init.c
John Lo 43a5b7cc44 dpdk: enable checksum offload for Intel SRIOV NIC drivers 
Type: fix

Signed-off-by: John Lo <loj@cisco.com>
Change-Id: I3ee59106ba45164a4ee3788bf4dcf5bf4c2dc1c2
(cherry picked from commit 03598c4bcc)
2019-08-30 13:24:51 +00:00

1675 lines
46 KiB
C
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/*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/vnet.h>
#include <vppinfra/vec.h>
#include <vppinfra/error.h>
#include <vppinfra/format.h>
#include <vppinfra/bitmap.h>
#include <vppinfra/linux/sysfs.h>
#include <vlib/unix/unix.h>
#include <vlib/log.h>
#include <vnet/ethernet/ethernet.h>
#include <dpdk/buffer.h>
#include <dpdk/device/dpdk.h>
#include <vlib/pci/pci.h>
#include <vlib/vmbus/vmbus.h>
#include <rte_ring.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <string.h>
#include <fcntl.h>
#include <dirent.h>
#include <dpdk/device/dpdk_priv.h>
#define ETHER_MAX_LEN 1518 /**< Maximum frame len, including CRC. */
dpdk_main_t dpdk_main;
dpdk_config_main_t dpdk_config_main;
#define LINK_STATE_ELOGS 0
/* Port configuration, mildly modified Intel app values */
static dpdk_port_type_t
port_type_from_speed_capa (struct rte_eth_dev_info *dev_info)
{
if (dev_info->speed_capa & ETH_LINK_SPEED_100G)
return VNET_DPDK_PORT_TYPE_ETH_100G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_56G)
return VNET_DPDK_PORT_TYPE_ETH_56G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_50G)
return VNET_DPDK_PORT_TYPE_ETH_50G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_40G)
return VNET_DPDK_PORT_TYPE_ETH_40G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_25G)
return VNET_DPDK_PORT_TYPE_ETH_25G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_20G)
return VNET_DPDK_PORT_TYPE_ETH_20G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_10G)
return VNET_DPDK_PORT_TYPE_ETH_10G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_5G)
return VNET_DPDK_PORT_TYPE_ETH_5G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_2_5G)
return VNET_DPDK_PORT_TYPE_ETH_2_5G;
else if (dev_info->speed_capa & ETH_LINK_SPEED_1G)
return VNET_DPDK_PORT_TYPE_ETH_1G;
return VNET_DPDK_PORT_TYPE_UNKNOWN;
}
static dpdk_port_type_t
port_type_from_link_speed (u32 link_speed)
{
switch (link_speed)
{
case ETH_SPEED_NUM_1G:
return VNET_DPDK_PORT_TYPE_ETH_1G;
case ETH_SPEED_NUM_2_5G:
return VNET_DPDK_PORT_TYPE_ETH_2_5G;
case ETH_SPEED_NUM_5G:
return VNET_DPDK_PORT_TYPE_ETH_5G;
case ETH_SPEED_NUM_10G:
return VNET_DPDK_PORT_TYPE_ETH_10G;
case ETH_SPEED_NUM_20G:
return VNET_DPDK_PORT_TYPE_ETH_20G;
case ETH_SPEED_NUM_25G:
return VNET_DPDK_PORT_TYPE_ETH_25G;
case ETH_SPEED_NUM_40G:
return VNET_DPDK_PORT_TYPE_ETH_40G;
case ETH_SPEED_NUM_50G:
return VNET_DPDK_PORT_TYPE_ETH_50G;
case ETH_SPEED_NUM_56G:
return VNET_DPDK_PORT_TYPE_ETH_56G;
case ETH_SPEED_NUM_100G:
return VNET_DPDK_PORT_TYPE_ETH_100G;
default:
return VNET_DPDK_PORT_TYPE_UNKNOWN;
}
}
static u32
dpdk_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags)
{
dpdk_main_t *dm = &dpdk_main;
dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance);
u32 old = 0;
if (ETHERNET_INTERFACE_FLAG_CONFIG_PROMISC (flags))
{
old = (xd->flags & DPDK_DEVICE_FLAG_PROMISC) != 0;
if (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
xd->flags |= DPDK_DEVICE_FLAG_PROMISC;
else
xd->flags &= ~DPDK_DEVICE_FLAG_PROMISC;
if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
{
if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
rte_eth_promiscuous_enable (xd->port_id);
else
rte_eth_promiscuous_disable (xd->port_id);
}
}
else if (ETHERNET_INTERFACE_FLAG_CONFIG_MTU (flags))
{
xd->port_conf.rxmode.max_rx_pkt_len = hi->max_packet_bytes;
dpdk_device_setup (xd);
}
return old;
}
static void
dpdk_device_lock_init (dpdk_device_t * xd)
{
int q;
vec_validate (xd->lockp, xd->tx_q_used - 1);
for (q = 0; q < xd->tx_q_used; q++)
{
xd->lockp[q] = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
CLIB_CACHE_LINE_BYTES);
clib_memset ((void *) xd->lockp[q], 0, CLIB_CACHE_LINE_BYTES);
}
}
static int
dpdk_port_crc_strip_enabled (dpdk_device_t * xd)
{
return !(xd->port_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC);
}
/* The funciton check_l3cache helps check if Level 3 cache exists or not on current CPUs
return value 1: exist.
return value 0: not exist.
*/
static int
check_l3cache ()
{
struct dirent *dp;
clib_error_t *err;
const char *sys_cache_dir = "/sys/devices/system/cpu/cpu0/cache";
DIR *dir_cache = opendir (sys_cache_dir);
if (dir_cache == NULL)
return -1;
while ((dp = readdir (dir_cache)) != NULL)
{
if (dp->d_type == DT_DIR)
{
u8 *p = NULL;
int level_cache = -1;
p = format (p, "%s/%s/%s", sys_cache_dir, dp->d_name, "level");
if ((err = clib_sysfs_read ((char *) p, "%d", &level_cache)))
clib_error_free (err);
if (level_cache == 3)
{
closedir (dir_cache);
return 1;
}
}
}
if (dir_cache != NULL)
closedir (dir_cache);
return 0;
}
static clib_error_t *
dpdk_lib_init (dpdk_main_t * dm)
{
u32 nports;
u32 mtu, max_rx_frame;
int i;
clib_error_t *error;
vlib_main_t *vm = vlib_get_main ();
vlib_thread_main_t *tm = vlib_get_thread_main ();
vnet_device_main_t *vdm = &vnet_device_main;
vnet_sw_interface_t *sw;
vnet_hw_interface_t *hi;
dpdk_device_t *xd;
vlib_pci_addr_t last_pci_addr;
u32 last_pci_addr_port = 0;
vlib_thread_registration_t *tr_hqos;
uword *p_hqos;
u32 next_hqos_cpu = 0;
u8 af_packet_instance_num = 0;
last_pci_addr.as_u32 = ~0;
dm->hqos_cpu_first_index = 0;
dm->hqos_cpu_count = 0;
/* find out which cpus will be used for I/O TX */
p_hqos = hash_get_mem (tm->thread_registrations_by_name, "hqos-threads");
tr_hqos = p_hqos ? (vlib_thread_registration_t *) p_hqos[0] : 0;
if (tr_hqos && tr_hqos->count > 0)
{
dm->hqos_cpu_first_index = tr_hqos->first_index;
dm->hqos_cpu_count = tr_hqos->count;
}
vec_validate_aligned (dm->devices_by_hqos_cpu, tm->n_vlib_mains - 1,
CLIB_CACHE_LINE_BYTES);
nports = rte_eth_dev_count_avail ();
if (nports < 1)
{
dpdk_log_notice ("DPDK drivers found no ports...");
}
if (CLIB_DEBUG > 0)
dpdk_log_notice ("DPDK drivers found %d ports...", nports);
if (dm->conf->enable_tcp_udp_checksum)
dm->buffer_flags_template &= ~(VNET_BUFFER_F_L4_CHECKSUM_CORRECT
| VNET_BUFFER_F_L4_CHECKSUM_COMPUTED);
/* vlib_buffer_t template */
vec_validate_aligned (dm->per_thread_data, tm->n_vlib_mains - 1,
CLIB_CACHE_LINE_BYTES);
for (i = 0; i < tm->n_vlib_mains; i++)
{
dpdk_per_thread_data_t *ptd = vec_elt_at_index (dm->per_thread_data, i);
clib_memset (&ptd->buffer_template, 0, sizeof (vlib_buffer_t));
ptd->buffer_template.flags = dm->buffer_flags_template;
vnet_buffer (&ptd->buffer_template)->sw_if_index[VLIB_TX] = (u32) ~ 0;
}
/* *INDENT-OFF* */
RTE_ETH_FOREACH_DEV(i)
{
u8 addr[6];
int vlan_off;
struct rte_eth_dev_info dev_info;
struct rte_pci_device *pci_dev;
struct rte_eth_link l;
dpdk_portid_t next_port_id;
dpdk_device_config_t *devconf = 0;
vlib_pci_addr_t pci_addr;
uword *p = 0;
if (!rte_eth_dev_is_valid_port(i))
continue;
rte_eth_link_get_nowait (i, &l);
rte_eth_dev_info_get (i, &dev_info);
if (dev_info.device == 0)
{
clib_warning ("DPDK bug: missing device info. Skipping %s device",
dev_info.driver_name);
continue;
}
pci_dev = dpdk_get_pci_device (&dev_info);
if (pci_dev)
{
pci_addr.domain = pci_dev->addr.domain;
pci_addr.bus = pci_dev->addr.bus;
pci_addr.slot = pci_dev->addr.devid;
pci_addr.function = pci_dev->addr.function;
p = hash_get (dm->conf->device_config_index_by_pci_addr,
pci_addr.as_u32);
}
/* Create vnet interface */
vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
xd->nb_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
xd->nb_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
xd->cpu_socket = (i8) rte_eth_dev_socket_id (i);
if (p)
{
devconf = pool_elt_at_index (dm->conf->dev_confs, p[0]);
xd->name = devconf->name;
}
else
devconf = &dm->conf->default_devconf;
/* Handle interface naming for devices with multiple ports sharing same PCI ID */
if (pci_dev &&
((next_port_id = rte_eth_find_next (i + 1)) != RTE_MAX_ETHPORTS))
{
struct rte_eth_dev_info di = { 0 };
struct rte_pci_device *next_pci_dev;
rte_eth_dev_info_get (next_port_id, &di);
next_pci_dev = di.device ? RTE_DEV_TO_PCI (di.device) : 0;
if (next_pci_dev &&
pci_addr.as_u32 != last_pci_addr.as_u32 &&
memcmp (&pci_dev->addr, &next_pci_dev->addr,
sizeof (struct rte_pci_addr)) == 0)
{
xd->interface_name_suffix = format (0, "0");
last_pci_addr.as_u32 = pci_addr.as_u32;
last_pci_addr_port = i;
}
else if (pci_addr.as_u32 == last_pci_addr.as_u32)
{
xd->interface_name_suffix =
format (0, "%u", i - last_pci_addr_port);
}
else
{
last_pci_addr.as_u32 = ~0;
}
}
else
last_pci_addr.as_u32 = ~0;
clib_memcpy (&xd->tx_conf, &dev_info.default_txconf,
sizeof (struct rte_eth_txconf));
if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_IPV4_CKSUM)
{
xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_IPV4_CKSUM;
xd->flags |= DPDK_DEVICE_FLAG_RX_IP4_CKSUM;
}
if (dm->conf->no_multi_seg)
{
xd->port_conf.txmode.offloads &= ~DEV_TX_OFFLOAD_MULTI_SEGS;
xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_SCATTER;
}
else
{
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_SCATTER;
xd->flags |= DPDK_DEVICE_FLAG_MAYBE_MULTISEG;
}
xd->tx_q_used = clib_min (dev_info.max_tx_queues, tm->n_vlib_mains);
if (devconf->num_tx_queues > 0
&& devconf->num_tx_queues < xd->tx_q_used)
xd->tx_q_used = clib_min (xd->tx_q_used, devconf->num_tx_queues);
if (devconf->num_rx_queues > 1
&& dev_info.max_rx_queues >= devconf->num_rx_queues)
{
xd->rx_q_used = devconf->num_rx_queues;
xd->port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
if (devconf->rss_fn == 0)
xd->port_conf.rx_adv_conf.rss_conf.rss_hf =
ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP;
else
{
u64 unsupported_bits;
xd->port_conf.rx_adv_conf.rss_conf.rss_hf = devconf->rss_fn;
unsupported_bits = xd->port_conf.rx_adv_conf.rss_conf.rss_hf;
unsupported_bits &= ~dev_info.flow_type_rss_offloads;
if (unsupported_bits)
dpdk_log_warn ("Unsupported RSS hash functions: %U",
format_dpdk_rss_hf_name, unsupported_bits);
}
xd->port_conf.rx_adv_conf.rss_conf.rss_hf &=
dev_info.flow_type_rss_offloads;
}
else
xd->rx_q_used = 1;
xd->flags |= DPDK_DEVICE_FLAG_PMD;
/* workaround for drivers not setting driver_name */
if ((!dev_info.driver_name) && (pci_dev))
dev_info.driver_name = pci_dev->driver->driver.name;
ASSERT (dev_info.driver_name);
if (!xd->pmd)
{
#define _(s,f) else if (dev_info.driver_name && \
!strcmp(dev_info.driver_name, s)) \
xd->pmd = VNET_DPDK_PMD_##f;
if (0)
;
foreach_dpdk_pmd
#undef _
else
xd->pmd = VNET_DPDK_PMD_UNKNOWN;
xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
xd->nb_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
xd->nb_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
switch (xd->pmd)
{
/* Drivers with valid speed_capa set */
case VNET_DPDK_PMD_E1000EM:
case VNET_DPDK_PMD_IGB:
case VNET_DPDK_PMD_IXGBE:
case VNET_DPDK_PMD_I40E:
case VNET_DPDK_PMD_ICE:
xd->port_type = port_type_from_speed_capa (&dev_info);
xd->supported_flow_actions = VNET_FLOW_ACTION_MARK |
VNET_FLOW_ACTION_REDIRECT_TO_NODE |
VNET_FLOW_ACTION_REDIRECT_TO_QUEUE |
VNET_FLOW_ACTION_BUFFER_ADVANCE |
VNET_FLOW_ACTION_COUNT | VNET_FLOW_ACTION_DROP;
if (dm->conf->no_tx_checksum_offload == 0)
{
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
xd->flags |=
DPDK_DEVICE_FLAG_TX_OFFLOAD |
DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
}
break;
case VNET_DPDK_PMD_CXGBE:
case VNET_DPDK_PMD_MLX4:
case VNET_DPDK_PMD_MLX5:
case VNET_DPDK_PMD_QEDE:
xd->port_type = port_type_from_speed_capa (&dev_info);
break;
/* SR-IOV VFs */
case VNET_DPDK_PMD_IGBVF:
case VNET_DPDK_PMD_IXGBEVF:
case VNET_DPDK_PMD_I40EVF:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
if (dm->conf->no_tx_checksum_offload == 0)
{
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
xd->flags |=
DPDK_DEVICE_FLAG_TX_OFFLOAD |
DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;
}
break;
case VNET_DPDK_PMD_THUNDERX:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
if (dm->conf->no_tx_checksum_offload == 0)
{
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;
xd->flags |= DPDK_DEVICE_FLAG_TX_OFFLOAD;
}
break;
case VNET_DPDK_PMD_ENA:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_SCATTER;
break;
case VNET_DPDK_PMD_DPAA2:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
break;
/* Cisco VIC */
case VNET_DPDK_PMD_ENIC:
xd->port_type = port_type_from_link_speed (l.link_speed);
break;
/* Intel Red Rock Canyon */
case VNET_DPDK_PMD_FM10K:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_SWITCH;
break;
/* virtio */
case VNET_DPDK_PMD_VIRTIO:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
xd->nb_rx_desc = DPDK_NB_RX_DESC_VIRTIO;
xd->nb_tx_desc = DPDK_NB_TX_DESC_VIRTIO;
break;
/* vmxnet3 */
case VNET_DPDK_PMD_VMXNET3:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
break;
case VNET_DPDK_PMD_AF_PACKET:
xd->port_type = VNET_DPDK_PORT_TYPE_AF_PACKET;
xd->af_packet_instance_num = af_packet_instance_num++;
break;
case VNET_DPDK_PMD_VIRTIO_USER:
xd->port_type = VNET_DPDK_PORT_TYPE_VIRTIO_USER;
break;
case VNET_DPDK_PMD_VHOST_ETHER:
xd->port_type = VNET_DPDK_PORT_TYPE_VHOST_ETHER;
break;
case VNET_DPDK_PMD_LIOVF_ETHER:
xd->port_type = VNET_DPDK_PORT_TYPE_ETH_VF;
break;
case VNET_DPDK_PMD_FAILSAFE:
xd->port_type = VNET_DPDK_PORT_TYPE_FAILSAFE;
xd->port_conf.intr_conf.lsc = 1;
break;
case VNET_DPDK_PMD_NETVSC:
xd->port_type = port_type_from_link_speed (l.link_speed);
break;
default:
xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
}
if (devconf->num_rx_desc)
xd->nb_rx_desc = devconf->num_rx_desc;
else {
/* If num_rx_desc is not specified by VPP user, the current CPU is working
with 2M page and has no L3 cache, default num_rx_desc is changed to 512
from original 1024 to help reduce TLB misses.
*/
if ((clib_mem_get_default_hugepage_size () == 2 << 20)
&& check_l3cache() == 0)
xd->nb_rx_desc = 512;
}
if (devconf->num_tx_desc)
xd->nb_tx_desc = devconf->num_tx_desc;
else {
/* If num_tx_desc is not specified by VPP user, the current CPU is working
with 2M page and has no L3 cache, default num_tx_desc is changed to 512
from original 1024 to help reduce TLB misses.
*/
if ((clib_mem_get_default_hugepage_size () == 2 << 20)
&& check_l3cache() == 0)
xd->nb_tx_desc = 512;
}
}
if (xd->pmd == VNET_DPDK_PMD_AF_PACKET)
{
f64 now = vlib_time_now (vm);
u32 rnd;
rnd = (u32) (now * 1e6);
rnd = random_u32 (&rnd);
clib_memcpy (addr + 2, &rnd, sizeof (rnd));
addr[0] = 2;
addr[1] = 0xfe;
}
else
rte_eth_macaddr_get (i, (struct ether_addr *) addr);
if (xd->tx_q_used < tm->n_vlib_mains)
dpdk_device_lock_init (xd);
xd->port_id = i;
xd->device_index = xd - dm->devices;
xd->per_interface_next_index = ~0;
/* assign interface to input thread */
int q;
if (devconf->hqos_enabled)
{
xd->flags |= DPDK_DEVICE_FLAG_HQOS;
int cpu;
if (devconf->hqos.hqos_thread_valid)
{
if (devconf->hqos.hqos_thread >= dm->hqos_cpu_count)
return clib_error_return (0, "invalid HQoS thread index");
cpu = dm->hqos_cpu_first_index + devconf->hqos.hqos_thread;
}
else
{
if (dm->hqos_cpu_count == 0)
return clib_error_return (0, "no HQoS threads available");
cpu = dm->hqos_cpu_first_index + next_hqos_cpu;
next_hqos_cpu++;
if (next_hqos_cpu == dm->hqos_cpu_count)
next_hqos_cpu = 0;
devconf->hqos.hqos_thread_valid = 1;
devconf->hqos.hqos_thread = cpu;
}
dpdk_device_and_queue_t *dq;
vec_add2 (dm->devices_by_hqos_cpu[cpu], dq, 1);
dq->device = xd->device_index;
dq->queue_id = 0;
}
error = ethernet_register_interface
(dm->vnet_main, dpdk_device_class.index, xd->device_index,
/* ethernet address */ addr,
&xd->hw_if_index, dpdk_flag_change);
if (error)
return error;
/*
* Ensure default mtu is not > the mtu read from the hardware.
* Otherwise rte_eth_dev_configure() will fail and the port will
* not be available.
* Calculate max_frame_size and mtu supported by NIC
*/
if (ETHERNET_MAX_PACKET_BYTES > dev_info.max_rx_pktlen)
{
/*
* This device does not support the platforms's max frame
* size. Use it's advertised mru instead.
*/
max_rx_frame = dev_info.max_rx_pktlen;
mtu = dev_info.max_rx_pktlen - sizeof (ethernet_header_t);
}
else
{
/* VPP treats MTU and max_rx_pktlen both equal to
* ETHERNET_MAX_PACKET_BYTES, if dev_info.max_rx_pktlen >=
* ETHERNET_MAX_PACKET_BYTES + sizeof(ethernet_header_t)
*/
if (dev_info.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES +
sizeof (ethernet_header_t)))
{
mtu = ETHERNET_MAX_PACKET_BYTES;
max_rx_frame = ETHERNET_MAX_PACKET_BYTES;
/*
* Some platforms do not account for Ethernet FCS (4 bytes) in
* MTU calculations. To interop with them increase mru but only
* if the device's settings can support it.
*/
if (dpdk_port_crc_strip_enabled (xd) &&
(dev_info.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES +
sizeof (ethernet_header_t) +
4)))
{
max_rx_frame += 4;
}
}
else
{
max_rx_frame = ETHERNET_MAX_PACKET_BYTES;
mtu = ETHERNET_MAX_PACKET_BYTES - sizeof (ethernet_header_t);
if (dpdk_port_crc_strip_enabled (xd) &&
(dev_info.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES + 4)))
{
max_rx_frame += 4;
}
}
}
if (xd->pmd == VNET_DPDK_PMD_FAILSAFE)
{
/* failsafe device numerables are reported with active device only,
* need to query the mtu for current device setup to overwrite
* reported value.
*/
uint16_t dev_mtu;
if (!rte_eth_dev_get_mtu (i, &dev_mtu))
{
mtu = dev_mtu;
max_rx_frame = mtu + sizeof (ethernet_header_t);
if (dpdk_port_crc_strip_enabled (xd))
{
max_rx_frame += 4;
}
}
}
/*Set port rxmode config */
xd->port_conf.rxmode.max_rx_pkt_len = max_rx_frame;
sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->hw_if_index);
xd->sw_if_index = sw->sw_if_index;
vnet_hw_interface_set_input_node (dm->vnet_main, xd->hw_if_index,
dpdk_input_node.index);
if (devconf->workers)
{
int i;
q = 0;
clib_bitmap_foreach (i, devconf->workers, ({
vnet_hw_interface_assign_rx_thread (dm->vnet_main, xd->hw_if_index, q++,
vdm->first_worker_thread_index + i);
}));
}
else
for (q = 0; q < xd->rx_q_used; q++)
{
vnet_hw_interface_assign_rx_thread (dm->vnet_main, xd->hw_if_index, q, /* any */
~1);
}
/*Get vnet hardware interface */
hi = vnet_get_hw_interface (dm->vnet_main, xd->hw_if_index);
/*Override default max_packet_bytes and max_supported_bytes set in
* ethernet_register_interface() above*/
if (hi)
{
hi->max_packet_bytes = mtu;
hi->max_supported_packet_bytes = max_rx_frame;
hi->numa_node = xd->cpu_socket;
}
if (dm->conf->no_tx_checksum_offload == 0)
if (xd->flags & DPDK_DEVICE_FLAG_TX_OFFLOAD && hi != NULL)
hi->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
dpdk_device_setup (xd);
if (vec_len (xd->errors))
dpdk_log_err ("setup failed for device %U. Errors:\n %U",
format_dpdk_device_name, i,
format_dpdk_device_errors, xd);
if (devconf->hqos_enabled)
{
clib_error_t *rv;
rv = dpdk_port_setup_hqos (xd, &devconf->hqos);
if (rv)
return rv;
}
/*
* A note on Cisco VIC (PMD_ENIC) and VLAN:
*
* With Cisco VIC vNIC, every ingress packet is tagged. On a
* trunk vNIC (C series "standalone" server), packets on no VLAN
* are tagged with vlan 0. On an access vNIC (standalone or B
* series "blade" server), packets on the default/native VLAN
* are tagged with that vNIC's VLAN. VPP expects these packets
* to be untagged, and previously enabled VLAN strip on VIC by
* default. But it also broke vlan sub-interfaces.
*
* The VIC adapter has "untag default vlan" ingress VLAN rewrite
* mode, which removes tags from these packets. VPP now includes
* a local patch for the enic driver to use this untag mode, so
* enabling vlan stripping is no longer needed. In future, the
* driver + dpdk will have an API to set the mode after
* rte_eal_init. Then, this note and local patch will be
* removed.
*/
/*
* VLAN stripping: default to VLAN strip disabled, unless specified
* otherwise in the startup config.
*/
vlan_off = rte_eth_dev_get_vlan_offload (xd->port_id);
if (devconf->vlan_strip_offload == DPDK_DEVICE_VLAN_STRIP_ON)
{
vlan_off |= ETH_VLAN_STRIP_OFFLOAD;
if (rte_eth_dev_set_vlan_offload (xd->port_id, vlan_off) >= 0)
dpdk_log_info ("VLAN strip enabled for interface\n");
else
dpdk_log_warn ("VLAN strip cannot be supported by interface\n");
xd->port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
}
else
{
if (vlan_off & ETH_VLAN_STRIP_OFFLOAD)
{
vlan_off &= ~ETH_VLAN_STRIP_OFFLOAD;
if (rte_eth_dev_set_vlan_offload (xd->port_id, vlan_off) >= 0)
dpdk_log_warn ("set VLAN offload failed\n");
}
xd->port_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
}
if (hi)
hi->max_packet_bytes = xd->port_conf.rxmode.max_rx_pkt_len
- sizeof (ethernet_header_t);
else
clib_warning ("hi NULL");
if (dm->conf->no_multi_seg)
mtu = mtu > ETHER_MAX_LEN ? ETHER_MAX_LEN : mtu;
rte_eth_dev_set_mtu (xd->port_id, mtu);
}
/* *INDENT-ON* */
return 0;
}
static void
dpdk_bind_devices_to_uio (dpdk_config_main_t * conf)
{
vlib_main_t *vm = vlib_get_main ();
clib_error_t *error;
u8 *pci_addr = 0;
int num_whitelisted = vec_len (conf->dev_confs);
vlib_pci_device_info_t *d = 0;
vlib_pci_addr_t *addr = 0, *addrs;
int i;
addrs = vlib_pci_get_all_dev_addrs ();
/* *INDENT-OFF* */
vec_foreach (addr, addrs)
{
dpdk_device_config_t * devconf = 0;
vec_reset_length (pci_addr);
pci_addr = format (pci_addr, "%U%c", format_vlib_pci_addr, addr, 0);
if (d)
{
vlib_pci_free_device_info (d);
d = 0;
}
d = vlib_pci_get_device_info (vm, addr, &error);
if (error)
{
clib_error_report (error);
continue;
}
if (d->device_class != PCI_CLASS_NETWORK_ETHERNET && d->device_class != PCI_CLASS_PROCESSOR_CO)
continue;
if (num_whitelisted)
{
uword * p = hash_get (conf->device_config_index_by_pci_addr, addr->as_u32);
if (!p)
{
skipped:
continue;
}
devconf = pool_elt_at_index (conf->dev_confs, p[0]);
}
/* Enforce Device blacklist by vendor and device */
for (i = 0; i < vec_len (conf->blacklist_by_pci_vendor_and_device); i++)
{
u16 vendor, device;
vendor = (u16)(conf->blacklist_by_pci_vendor_and_device[i] >> 16);
device = (u16)(conf->blacklist_by_pci_vendor_and_device[i] & 0xFFFF);
if (d->vendor_id == vendor && d->device_id == device)
{
/*
* Expected case: device isn't whitelisted,
* so blacklist it...
*/
if (devconf == 0)
{
/* Device is blacklisted */
pool_get (conf->dev_confs, devconf);
hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
devconf - conf->dev_confs);
devconf->pci_addr.as_u32 = addr->as_u32;
devconf->is_blacklisted = 1;
goto skipped;
}
else /* explicitly whitelisted, ignore the device blacklist */
break;
}
}
/* virtio */
if (d->vendor_id == 0x1af4 &&
(d->device_id == VIRTIO_PCI_LEGACY_DEVICEID_NET ||
d->device_id == VIRTIO_PCI_MODERN_DEVICEID_NET))
;
/* vmxnet3 */
else if (d->vendor_id == 0x15ad && d->device_id == 0x07b0)
{
/*
* For vmxnet3 PCI, unless it is explicitly specified in the whitelist,
* the default is to put it in the blacklist.
*/
if (devconf == 0)
{
pool_get (conf->dev_confs, devconf);
hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
devconf - conf->dev_confs);
devconf->pci_addr.as_u32 = addr->as_u32;
devconf->is_blacklisted = 1;
}
}
/* all Intel network devices */
else if (d->vendor_id == 0x8086 && d->device_class == PCI_CLASS_NETWORK_ETHERNET)
;
/* all Intel QAT devices VFs */
else if (d->vendor_id == 0x8086 && d->device_class == PCI_CLASS_PROCESSOR_CO &&
(d->device_id == 0x0443 || d->device_id == 0x37c9 || d->device_id == 0x19e3))
;
/* Cisco VIC */
else if (d->vendor_id == 0x1137 &&
(d->device_id == 0x0043 || d->device_id == 0x0071))
;
/* Chelsio T4/T5 */
else if (d->vendor_id == 0x1425 && (d->device_id & 0xe000) == 0x4000)
;
/* Amazen Elastic Network Adapter */
else if (d->vendor_id == 0x1d0f && d->device_id >= 0xec20 && d->device_id <= 0xec21)
;
/* Cavium Network Adapter */
else if (d->vendor_id == 0x177d && d->device_id == 0x9712)
;
/* Cavium FastlinQ QL41000 Series */
else if (d->vendor_id == 0x1077 && d->device_id >= 0x8070 && d->device_id <= 0x8090)
;
/* Mellanox mlx4 */
else if (d->vendor_id == 0x15b3 && d->device_id >= 0x1003 && d->device_id <= 0x1004)
{
continue;
}
/* Mellanox mlx5 */
else if (d->vendor_id == 0x15b3 && d->device_id >= 0x1013 && d->device_id <= 0x101a)
{
continue;
}
else
{
dpdk_log_warn ("Unsupported PCI device 0x%04x:0x%04x found "
"at PCI address %s\n", (u16) d->vendor_id, (u16) d->device_id,
pci_addr);
continue;
}
error = vlib_pci_bind_to_uio (vm, addr, (char *) conf->uio_driver_name);
if (error)
{
if (devconf == 0)
{
pool_get (conf->dev_confs, devconf);
hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
devconf - conf->dev_confs);
devconf->pci_addr.as_u32 = addr->as_u32;
}
devconf->is_blacklisted = 1;
clib_error_report (error);
}
}
/* *INDENT-ON* */
vec_free (pci_addr);
vlib_pci_free_device_info (d);
}
static void
dpdk_bind_vmbus_devices_to_uio (dpdk_config_main_t * conf)
{
clib_error_t *error;
vlib_vmbus_addr_t *addrs, *addr = 0;
addrs = vlib_vmbus_get_all_dev_addrs ();
/* *INDENT-OFF* */
vec_foreach (addr, addrs)
{
error = vlib_vmbus_bind_to_uio (addr);
if (error)
{
clib_error_report (error);
}
}
/* *INDENT-ON* */
}
static clib_error_t *
dpdk_device_config (dpdk_config_main_t * conf, vlib_pci_addr_t pci_addr,
unformat_input_t * input, u8 is_default)
{
clib_error_t *error = 0;
uword *p;
dpdk_device_config_t *devconf;
unformat_input_t sub_input;
if (is_default)
{
devconf = &conf->default_devconf;
}
else
{
p = hash_get (conf->device_config_index_by_pci_addr, pci_addr.as_u32);
if (!p)
{
pool_get (conf->dev_confs, devconf);
hash_set (conf->device_config_index_by_pci_addr, pci_addr.as_u32,
devconf - conf->dev_confs);
}
else
return clib_error_return (0,
"duplicate configuration for PCI address %U",
format_vlib_pci_addr, &pci_addr);
}
devconf->pci_addr.as_u32 = pci_addr.as_u32;
devconf->hqos_enabled = 0;
#if 0
dpdk_device_config_hqos_default (&devconf->hqos);
#endif
if (!input)
return 0;
unformat_skip_white_space (input);
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "num-rx-queues %u", &devconf->num_rx_queues))
;
else if (unformat (input, "num-tx-queues %u", &devconf->num_tx_queues))
;
else if (unformat (input, "num-rx-desc %u", &devconf->num_rx_desc))
;
else if (unformat (input, "num-tx-desc %u", &devconf->num_tx_desc))
;
else if (unformat (input, "name %s", &devconf->name))
;
else if (unformat (input, "workers %U", unformat_bitmap_list,
&devconf->workers))
;
else
if (unformat
(input, "rss %U", unformat_vlib_cli_sub_input, &sub_input))
{
error = unformat_rss_fn (&sub_input, &devconf->rss_fn);
if (error)
break;
}
else if (unformat (input, "vlan-strip-offload off"))
devconf->vlan_strip_offload = DPDK_DEVICE_VLAN_STRIP_OFF;
else if (unformat (input, "vlan-strip-offload on"))
devconf->vlan_strip_offload = DPDK_DEVICE_VLAN_STRIP_ON;
else
if (unformat
(input, "hqos %U", unformat_vlib_cli_sub_input, &sub_input))
{
devconf->hqos_enabled = 1;
error = unformat_hqos (&sub_input, &devconf->hqos);
if (error)
break;
}
else if (unformat (input, "hqos"))
{
devconf->hqos_enabled = 1;
}
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
break;
}
}
if (error)
return error;
if (devconf->workers && devconf->num_rx_queues == 0)
devconf->num_rx_queues = clib_bitmap_count_set_bits (devconf->workers);
else if (devconf->workers &&
clib_bitmap_count_set_bits (devconf->workers) !=
devconf->num_rx_queues)
error =
clib_error_return (0,
"%U: number of worker threads must be "
"equal to number of rx queues", format_vlib_pci_addr,
&pci_addr);
return error;
}
static clib_error_t *
dpdk_log_read_ready (clib_file_t * uf)
{
unformat_input_t input;
u8 *line, *s = 0;
int n, n_try;
n = n_try = 4096;
while (n == n_try)
{
uword len = vec_len (s);
vec_resize (s, len + n_try);
n = read (uf->file_descriptor, s + len, n_try);
if (n < 0 && errno != EAGAIN)
return clib_error_return_unix (0, "read");
_vec_len (s) = len + (n < 0 ? 0 : n);
}
unformat_init_vector (&input, s);
while (unformat_user (&input, unformat_line, &line))
{
dpdk_log_notice ("%v", line);
vec_free (line);
}
unformat_free (&input);
return 0;
}
static clib_error_t *
dpdk_config (vlib_main_t * vm, unformat_input_t * input)
{
clib_error_t *error = 0;
dpdk_config_main_t *conf = &dpdk_config_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
dpdk_device_config_t *devconf;
vlib_pci_addr_t pci_addr;
unformat_input_t sub_input;
uword default_hugepage_sz, x;
u8 *s, *tmp = 0;
int ret, i;
int num_whitelisted = 0;
u8 no_pci = 0;
u8 no_vmbus = 0;
u8 file_prefix = 0;
u8 *socket_mem = 0;
u8 *huge_dir_path = 0;
u32 vendor, device;
huge_dir_path =
format (0, "%s/hugepages%c", vlib_unix_get_runtime_dir (), 0);
conf->device_config_index_by_pci_addr = hash_create (0, sizeof (uword));
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
/* Prime the pump */
if (unformat (input, "no-hugetlb"))
{
vec_add1 (conf->eal_init_args, (u8 *) "--no-huge");
}
else if (unformat (input, "enable-tcp-udp-checksum"))
conf->enable_tcp_udp_checksum = 1;
else if (unformat (input, "no-tx-checksum-offload"))
conf->no_tx_checksum_offload = 1;
else if (unformat (input, "decimal-interface-names"))
conf->interface_name_format_decimal = 1;
else if (unformat (input, "no-multi-seg"))
conf->no_multi_seg = 1;
else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input,
&sub_input))
{
error =
dpdk_device_config (conf, (vlib_pci_addr_t) (u32) ~ 1, &sub_input,
1);
if (error)
return error;
}
else
if (unformat
(input, "dev %U %U", unformat_vlib_pci_addr, &pci_addr,
unformat_vlib_cli_sub_input, &sub_input))
{
error = dpdk_device_config (conf, pci_addr, &sub_input, 0);
if (error)
return error;
num_whitelisted++;
}
else if (unformat (input, "dev %U", unformat_vlib_pci_addr, &pci_addr))
{
error = dpdk_device_config (conf, pci_addr, 0, 0);
if (error)
return error;
num_whitelisted++;
}
else if (unformat (input, "num-mem-channels %d", &conf->nchannels))
conf->nchannels_set_manually = 0;
else if (unformat (input, "num-crypto-mbufs %d",
&conf->num_crypto_mbufs))
;
else if (unformat (input, "uio-driver %s", &conf->uio_driver_name))
;
else if (unformat (input, "socket-mem %s", &socket_mem))
;
else if (unformat (input, "no-pci"))
{
no_pci = 1;
tmp = format (0, "--no-pci%c", 0);
vec_add1 (conf->eal_init_args, tmp);
}
else if (unformat (input, "blacklist %x:%x", &vendor, &device))
{
u32 blacklist_entry;
if (vendor > 0xFFFF)
return clib_error_return (0, "blacklist PCI vendor out of range");
if (device > 0xFFFF)
return clib_error_return (0, "blacklist PCI device out of range");
blacklist_entry = (vendor << 16) | (device & 0xffff);
vec_add1 (conf->blacklist_by_pci_vendor_and_device,
blacklist_entry);
}
else if (unformat (input, "no-vmbus"))
{
no_vmbus = 1;
tmp = format (0, "--no-vmbus%c", 0);
vec_add1 (conf->eal_init_args, tmp);
}
#define _(a) \
else if (unformat(input, #a)) \
{ \
tmp = format (0, "--%s%c", #a, 0); \
vec_add1 (conf->eal_init_args, tmp); \
}
foreach_eal_double_hyphen_predicate_arg
#undef _
#define _(a) \
else if (unformat(input, #a " %s", &s)) \
{ \
if (!strncmp(#a, "file-prefix", 11)) \
file_prefix = 1; \
tmp = format (0, "--%s%c", #a, 0); \
vec_add1 (conf->eal_init_args, tmp); \
vec_add1 (s, 0); \
if (!strncmp(#a, "vdev", 4)) \
if (strstr((char*)s, "af_packet")) \
clib_warning ("af_packet obsoleted. Use CLI 'create host-interface'."); \
vec_add1 (conf->eal_init_args, s); \
}
foreach_eal_double_hyphen_arg
#undef _
#define _(a,b) \
else if (unformat(input, #a " %s", &s)) \
{ \
tmp = format (0, "-%s%c", #b, 0); \
vec_add1 (conf->eal_init_args, tmp); \
vec_add1 (s, 0); \
vec_add1 (conf->eal_init_args, s); \
}
foreach_eal_single_hyphen_arg
#undef _
#define _(a,b) \
else if (unformat(input, #a " %s", &s)) \
{ \
tmp = format (0, "-%s%c", #b, 0); \
vec_add1 (conf->eal_init_args, tmp); \
vec_add1 (s, 0); \
vec_add1 (conf->eal_init_args, s); \
conf->a##_set_manually = 1; \
}
foreach_eal_single_hyphen_mandatory_arg
#undef _
else if (unformat (input, "default"))
;
else if (unformat_skip_white_space (input))
;
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
goto done;
}
}
if (!conf->uio_driver_name)
conf->uio_driver_name = format (0, "auto%c", 0);
default_hugepage_sz = clib_mem_get_default_hugepage_size ();
/* *INDENT-OFF* */
clib_bitmap_foreach (x, tm->cpu_socket_bitmap, (
{
clib_error_t *e;
uword n_pages;
/* preallocate at least 16MB of hugepages per socket,
if more is needed it is up to consumer to preallocate more */
n_pages = round_pow2 ((uword) 16 << 20, default_hugepage_sz);
n_pages /= default_hugepage_sz;
if ((e = clib_sysfs_prealloc_hugepages(x, 0, n_pages)))
clib_error_report (e);
}));
/* *INDENT-ON* */
if (!file_prefix)
{
tmp = format (0, "--file-prefix%c", 0);
vec_add1 (conf->eal_init_args, tmp);
tmp = format (0, "vpp%c", 0);
vec_add1 (conf->eal_init_args, tmp);
}
if (error)
return error;
/* I'll bet that -c and -n must be the first and second args... */
if (!conf->coremask_set_manually)
{
vlib_thread_registration_t *tr;
uword *coremask = 0;
int i;
/* main thread core */
coremask = clib_bitmap_set (coremask, tm->main_lcore, 1);
for (i = 0; i < vec_len (tm->registrations); i++)
{
tr = tm->registrations[i];
coremask = clib_bitmap_or (coremask, tr->coremask);
}
vec_insert (conf->eal_init_args, 2, 1);
conf->eal_init_args[1] = (u8 *) "-c";
tmp = format (0, "%U%c", format_bitmap_hex, coremask, 0);
conf->eal_init_args[2] = tmp;
clib_bitmap_free (coremask);
}
if (!conf->nchannels_set_manually)
{
vec_insert (conf->eal_init_args, 2, 3);
conf->eal_init_args[3] = (u8 *) "-n";
tmp = format (0, "%d", conf->nchannels);
conf->eal_init_args[4] = tmp;
}
if (no_pci == 0 && geteuid () == 0)
dpdk_bind_devices_to_uio (conf);
if (no_vmbus == 0 && geteuid () == 0)
dpdk_bind_vmbus_devices_to_uio (conf);
#define _(x) \
if (devconf->x == 0 && conf->default_devconf.x > 0) \
devconf->x = conf->default_devconf.x ;
/* *INDENT-OFF* */
pool_foreach (devconf, conf->dev_confs, ({
/* default per-device config items */
foreach_dpdk_device_config_item
/* copy vlan_strip config from default device */
if (devconf->vlan_strip_offload == 0 &&
conf->default_devconf.vlan_strip_offload > 0)
devconf->vlan_strip_offload =
conf->default_devconf.vlan_strip_offload;
/* add DPDK EAL whitelist/blacklist entry */
if (num_whitelisted > 0 && devconf->is_blacklisted == 0)
{
tmp = format (0, "-w%c", 0);
vec_add1 (conf->eal_init_args, tmp);
tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
vec_add1 (conf->eal_init_args, tmp);
}
else if (num_whitelisted == 0 && devconf->is_blacklisted != 0)
{
tmp = format (0, "-b%c", 0);
vec_add1 (conf->eal_init_args, tmp);
tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
vec_add1 (conf->eal_init_args, tmp);
}
}));
/* *INDENT-ON* */
#undef _
/* set master-lcore */
tmp = format (0, "--master-lcore%c", 0);
vec_add1 (conf->eal_init_args, tmp);
tmp = format (0, "%u%c", tm->main_lcore, 0);
vec_add1 (conf->eal_init_args, tmp);
if (socket_mem)
clib_warning ("socket-mem argument is deprecated");
/* NULL terminate the "argv" vector, in case of stupidity */
vec_add1 (conf->eal_init_args, 0);
_vec_len (conf->eal_init_args) -= 1;
/* Set up DPDK eal and packet mbuf pool early. */
int log_fds[2] = { 0 };
if (pipe (log_fds) == 0)
{
if (fcntl (log_fds[1], F_SETFL, O_NONBLOCK) == 0)
{
FILE *f = fdopen (log_fds[1], "a");
if (f && rte_openlog_stream (f) == 0)
{
clib_file_t t = { 0 };
t.read_function = dpdk_log_read_ready;
t.file_descriptor = log_fds[0];
t.description = format (0, "DPDK logging pipe");
clib_file_add (&file_main, &t);
}
}
else
{
close (log_fds[0]);
close (log_fds[1]);
}
}
vm = vlib_get_main ();
/* make copy of args as rte_eal_init tends to mess up with arg array */
for (i = 1; i < vec_len (conf->eal_init_args); i++)
conf->eal_init_args_str = format (conf->eal_init_args_str, "%s ",
conf->eal_init_args[i]);
dpdk_log_warn ("EAL init args: %s", conf->eal_init_args_str);
ret = rte_eal_init (vec_len (conf->eal_init_args),
(char **) conf->eal_init_args);
/* lazy umount hugepages */
umount2 ((char *) huge_dir_path, MNT_DETACH);
rmdir ((char *) huge_dir_path);
vec_free (huge_dir_path);
if (ret < 0)
return clib_error_return (0, "rte_eal_init returned %d", ret);
/* main thread 1st */
if ((error = dpdk_buffer_pools_create (vm)))
return error;
done:
return error;
}
VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");
void
dpdk_update_link_state (dpdk_device_t * xd, f64 now)
{
vnet_main_t *vnm = vnet_get_main ();
struct rte_eth_link prev_link = xd->link;
u32 hw_flags = 0;
u8 hw_flags_chg = 0;
/* only update link state for PMD interfaces */
if ((xd->flags & DPDK_DEVICE_FLAG_PMD) == 0)
return;
xd->time_last_link_update = now ? now : xd->time_last_link_update;
clib_memset (&xd->link, 0, sizeof (xd->link));
rte_eth_link_get_nowait (xd->port_id, &xd->link);
if (LINK_STATE_ELOGS)
{
vlib_main_t *vm = vlib_get_main ();
ELOG_TYPE_DECLARE (e) =
{
.format =
"update-link-state: sw_if_index %d, admin_up %d,"
"old link_state %d new link_state %d",.format_args = "i4i1i1i1",};
struct
{
u32 sw_if_index;
u8 admin_up;
u8 old_link_state;
u8 new_link_state;
} *ed;
ed = ELOG_DATA (&vm->elog_main, e);
ed->sw_if_index = xd->sw_if_index;
ed->admin_up = (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) != 0;
ed->old_link_state = (u8)
vnet_hw_interface_is_link_up (vnm, xd->hw_if_index);
ed->new_link_state = (u8) xd->link.link_status;
}
if ((xd->link.link_duplex != prev_link.link_duplex))
{
hw_flags_chg = 1;
switch (xd->link.link_duplex)
{
case ETH_LINK_HALF_DUPLEX:
hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
break;
case ETH_LINK_FULL_DUPLEX:
hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
break;
default:
break;
}
}
if (xd->link.link_speed != prev_link.link_speed)
vnet_hw_interface_set_link_speed (vnm, xd->hw_if_index,
xd->link.link_speed * 1000);
if (xd->link.link_status != prev_link.link_status)
{
hw_flags_chg = 1;
if (xd->link.link_status)
hw_flags |= VNET_HW_INTERFACE_FLAG_LINK_UP;
}
if (hw_flags_chg)
{
if (LINK_STATE_ELOGS)
{
vlib_main_t *vm = vlib_get_main ();
ELOG_TYPE_DECLARE (e) =
{
.format =
"update-link-state: sw_if_index %d, new flags %d",.format_args
= "i4i4",};
struct
{
u32 sw_if_index;
u32 flags;
} *ed;
ed = ELOG_DATA (&vm->elog_main, e);
ed->sw_if_index = xd->sw_if_index;
ed->flags = hw_flags;
}
vnet_hw_interface_set_flags (vnm, xd->hw_if_index, hw_flags);
}
}
static uword
dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
{
clib_error_t *error;
dpdk_main_t *dm = &dpdk_main;
dpdk_device_t *xd;
vlib_thread_main_t *tm = vlib_get_thread_main ();
error = dpdk_lib_init (dm);
if (error)
clib_error_report (error);
tm->worker_thread_release = 1;
f64 now = vlib_time_now (vm);
vec_foreach (xd, dm->devices)
{
dpdk_update_link_state (xd, now);
}
while (1)
{
/*
* check each time through the loop in case intervals are changed
*/
f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
dm->link_state_poll_interval : dm->stat_poll_interval;
vlib_process_wait_for_event_or_clock (vm, min_wait);
if (dm->admin_up_down_in_progress)
/* skip the poll if an admin up down is in progress (on any interface) */
continue;
vec_foreach (xd, dm->devices)
{
f64 now = vlib_time_now (vm);
if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
dpdk_update_counters (xd, now);
if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
dpdk_update_link_state (xd, now);
}
}
return 0;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (dpdk_process_node,static) = {
.function = dpdk_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "dpdk-process",
.process_log2_n_stack_bytes = 17,
};
/* *INDENT-ON* */
static clib_error_t *
dpdk_init (vlib_main_t * vm)
{
dpdk_main_t *dm = &dpdk_main;
clib_error_t *error = 0;
/* verify that structs are cacheline aligned */
STATIC_ASSERT (offsetof (dpdk_device_t, cacheline0) == 0,
"Cache line marker must be 1st element in dpdk_device_t");
STATIC_ASSERT (offsetof (dpdk_device_t, cacheline1) ==
CLIB_CACHE_LINE_BYTES,
"Data in cache line 0 is bigger than cache line size");
STATIC_ASSERT (offsetof (frame_queue_trace_t, cacheline0) == 0,
"Cache line marker must be 1st element in frame_queue_trace_t");
STATIC_ASSERT (RTE_CACHE_LINE_SIZE == 1 << CLIB_LOG2_CACHE_LINE_BYTES,
"DPDK RTE CACHE LINE SIZE does not match with 1<<CLIB_LOG2_CACHE_LINE_BYTES");
dpdk_cli_reference ();
dm->vlib_main = vm;
dm->vnet_main = vnet_get_main ();
dm->conf = &dpdk_config_main;
dm->conf->nchannels = 4;
vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");
vec_add1 (dm->conf->eal_init_args, (u8 *) "--in-memory");
/* Default vlib_buffer_t flags, DISABLES tcp/udp checksumming... */
dm->buffer_flags_template = (VLIB_BUFFER_TOTAL_LENGTH_VALID |
VLIB_BUFFER_EXT_HDR_VALID |
VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
VNET_BUFFER_F_L4_CHECKSUM_CORRECT);
dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;
dm->log_default = vlib_log_register_class ("dpdk", 0);
return error;
}
VLIB_INIT_FUNCTION (dpdk_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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