DPDK 16.04 introduces the vHost PMD which allows 'dpdkvhostuser' ports
to be controlled by the librte_ether API, like physical 'dpdk' ports.
The commit integrates this functionality into OVS, and refactors some
of the existing vhost code such that it is vhost-cuse specific.
Similarly, there is now some overlap between dpdk and vhost-user port
code.
Signed-off-by: Ciara Loftus <ciara.lof...@intel.com>
---
INSTALL.DPDK.md | 12 ++
NEWS | 2 +
lib/netdev-dpdk.c | 515 +++++++++++++++++++++++++-----------------------------
3 files changed, 254 insertions(+), 275 deletions(-)
mode change 100644 => 100755 lib/netdev-dpdk.c
diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
index 7f76df8..5006812 100644
--- a/INSTALL.DPDK.md
+++ b/INSTALL.DPDK.md
@@ -945,6 +945,18 @@ Restrictions:
increased to the desired number of queues. Both DPDK and OVS must be
recompiled for this change to take effect.
+ DPDK 'eth' type ports:
+ - dpdk, dpdkr and dpdkvhostuser ports are 'eth' type ports in the context of
+ DPDK as they are all managed by the rte_ether API. This means that they
+ adhere to the DPDK configuration option CONFIG_RTE_MAX_ETHPORTS which by
+ default is set to 32. This means by default the combined total number of
+ dpdk, dpdkr and dpdkvhostuser ports allowable in OVS with DPDK is 32. This
+ value can be changed if desired by modifying the configuration file in
+ DPDK, or by overriding the default value on the command line when building
+ DPDK. eg.
+
+ `make install CONFIG_RTE_MAX_ETHPORTS=64`
+
Bug Reporting:
--------------
diff --git a/NEWS b/NEWS
index ea7f3a1..4dc0201 100644
--- a/NEWS
+++ b/NEWS
@@ -26,6 +26,8 @@ Post-v2.5.0
assignment.
* Type of log messages from PMD threads changed from INFO to DBG.
* QoS functionality with sample egress-policer implementation.
+ * vHost PMD integration brings vhost-user ports under control of the
+ rte_ether DPDK API.
- ovs-benchmark: This utility has been removed due to lack of use and
bitrot.
- ovs-appctl:
diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
old mode 100644
new mode 100755
index 208c5f5..4fccd63
--- a/lib/netdev-dpdk.c
+++ b/lib/netdev-dpdk.c
@@ -56,6 +56,7 @@
#include "rte_mbuf.h"
#include "rte_meter.h"
#include "rte_virtio_net.h"
+#include "rte_eth_vhost.h"
VLOG_DEFINE_THIS_MODULE(dpdk);
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
@@ -109,6 +110,8 @@ BUILD_ASSERT_DECL((MAX_NB_MBUF /
ROUND_DOWN_POW2(MAX_NB_MBUF/MIN_NB_MBUF))
static char *cuse_dev_name = NULL; /* Character device cuse_dev_name. */
static char *vhost_sock_dir = NULL; /* Location of vhost-user sockets */
+/* Array that tracks the used & unused vHost user driver IDs */
+static unsigned int vhost_user_drv_ids[RTE_MAX_ETHPORTS];
/*
* Maximum amount of time in micro seconds to try and enqueue to vhost.
@@ -143,7 +146,8 @@ enum { DRAIN_TSC = 200000ULL };
enum dpdk_dev_type {
DPDK_DEV_ETH = 0,
- DPDK_DEV_VHOST = 1,
+ DPDK_DEV_VHOST_USER = 1,
+ DPDK_DEV_VHOST_CUSE = 2,
};
static int rte_eal_init_ret = ENODEV;
@@ -275,8 +279,6 @@ struct dpdk_tx_queue {
* from concurrent access. It is used only
* if the queue is shared among different
* pmd threads (see 'txq_needs_locking'). */
- int map; /* Mapping of configured vhost-user queues
- * to enabled by guest. */
uint64_t tsc;
struct rte_mbuf *burst_pkts[MAX_TX_QUEUE_LEN];
};
@@ -329,12 +331,22 @@ struct netdev_dpdk {
int real_n_rxq;
bool txq_needs_locking;
- /* virtio-net structure for vhost device */
+ /* Spinlock for vhost cuse transmission. Other DPDK devices use spinlocks
+ * in dpdk_tx_queue */
+ rte_spinlock_t vhost_cuse_tx_lock;
+
+ /* virtio-net structure for vhost cuse device */
OVSRCU_TYPE(struct virtio_net *) virtio_dev;
/* Identifier used to distinguish vhost devices from each other */
char vhost_id[PATH_MAX];
+ /* ID of vhost user port given to the PMD driver */
+ unsigned int vhost_pmd_id;
+
+ /* Number of virtqueue pairs reported by the guest */
+ uint32_t reported_queues;
+
/* In dpdk_list. */
struct ovs_list list_node OVS_GUARDED_BY(dpdk_mutex);
@@ -352,13 +364,20 @@ struct netdev_rxq_dpdk {
static bool dpdk_thread_is_pmd(void);
static int netdev_dpdk_construct(struct netdev *);
+static int netdev_dpdk_vhost_user_construct(struct netdev *);
struct virtio_net * netdev_dpdk_get_virtio(const struct netdev_dpdk *dev);
+void vring_state_changed_callback(uint8_t port_id,
+ enum rte_eth_event_type type OVS_UNUSED, void *param OVS_UNUSED);
+void device_state_changed_callback(uint8_t port_id,
+ enum rte_eth_event_type type OVS_UNUSED, void *param OVS_UNUSED);
+
static bool
is_dpdk_class(const struct netdev_class *class)
{
- return class->construct == netdev_dpdk_construct;
+ return ((class->construct == netdev_dpdk_construct) ||
+ (class->construct == netdev_dpdk_vhost_user_construct));
}
/* DPDK NIC drivers allocate RX buffers at a particular granularity, typically
@@ -581,7 +600,9 @@ dpdk_eth_dev_queue_setup(struct netdev_dpdk *dev, int
n_rxq, int n_txq)
}
dev->up.n_rxq = n_rxq;
- dev->real_n_txq = n_txq;
+ if (dev->type == DPDK_DEV_ETH) {
+ dev->real_n_txq = n_txq;
+ }
return 0;
}
@@ -672,11 +693,72 @@ netdev_dpdk_alloc_txq(struct netdev_dpdk *dev, unsigned
int n_txqs)
/* Queues are shared among CPUs. Always flush */
dev->tx_q[i].flush_tx = true;
}
+ }
+}
- /* Initialize map for vhost devices. */
- dev->tx_q[i].map = OVS_VHOST_QUEUE_MAP_UNKNOWN;
- rte_spinlock_init(&dev->tx_q[i].tx_lock);
+void
+vring_state_changed_callback(uint8_t port_id,
+ enum rte_eth_event_type type OVS_UNUSED,
+ void *param OVS_UNUSED)
+{
+ struct netdev_dpdk *dev;
+ struct rte_eth_vhost_queue_event event;
+ int err = 0;
+
+ err = rte_eth_vhost_get_queue_event(port_id, &event);
+ if (err || (event.rx == 1)) {
+ return;
}
+
+ ovs_mutex_lock(&dpdk_mutex);
+ LIST_FOR_EACH (dev, list_node, &dpdk_list) {
+ if (port_id == dev->port_id) {
+ ovs_mutex_lock(&dev->mutex);
+ if (event.enable) {
+ dev->reported_queues++;
+ } else {
+ dev->reported_queues--;
+ }
+ dev->real_n_rxq = dev->reported_queues;
+ dev->real_n_txq = dev->reported_queues;
+ dev->txq_needs_locking = true;
+ netdev_dpdk_alloc_txq(dev, dev->real_n_txq);
+ ovs_mutex_unlock(&dev->mutex);
+ break;
+ }
+ }
+ ovs_mutex_unlock(&dpdk_mutex);
+
+ return;
+}
+
+void
+device_state_changed_callback(uint8_t port_id,
+ enum rte_eth_event_type type OVS_UNUSED,
+ void *param OVS_UNUSED)
+{
+ struct netdev_dpdk *dev;
+
+ ovs_mutex_lock(&dpdk_mutex);
+ LIST_FOR_EACH (dev, list_node, &dpdk_list) {
+ if (port_id == dev->port_id) {
+ ovs_mutex_lock(&dev->mutex);
+ check_link_status(dev);
+ if (dev->link.link_status == ETH_LINK_UP) {
+ /* new device */
+ VLOG_INFO("vHost Device '%s' has been added", dev->vhost_id);
+
+ } else {
+ /* destroy device */
+ VLOG_INFO("vHost Device '%s' has been removed", dev->vhost_id);
+ }
+ ovs_mutex_unlock(&dev->mutex);
+ break;
+ }
+ }
+ ovs_mutex_unlock(&dpdk_mutex);
+
+ return;
}
static int
@@ -688,6 +770,7 @@ netdev_dpdk_init(struct netdev *netdev, unsigned int
port_no,
int sid;
int err = 0;
uint32_t buf_size;
+ unsigned int n_queues = 0;
ovs_mutex_init(&dev->mutex);
ovs_mutex_lock(&dev->mutex);
@@ -697,7 +780,7 @@ netdev_dpdk_init(struct netdev *netdev, unsigned int
port_no,
/* If the 'sid' is negative, it means that the kernel fails
* to obtain the pci numa info. In that situation, always
* use 'SOCKET0'. */
- if (type == DPDK_DEV_ETH) {
+ if (type != DPDK_DEV_VHOST_CUSE) {
sid = rte_eth_dev_socket_id(port_no);
} else {
sid = rte_lcore_to_socket_id(rte_get_master_lcore());
@@ -709,6 +792,8 @@ netdev_dpdk_init(struct netdev *netdev, unsigned int
port_no,
dev->flags = 0;
dev->mtu = ETHER_MTU;
dev->max_packet_len = MTU_TO_FRAME_LEN(dev->mtu);
+ dev->vhost_pmd_id = 0;
+ dev->reported_queues = 0;
buf_size = dpdk_buf_size(dev->mtu);
dev->dpdk_mp = dpdk_mp_get(dev->socket_id, FRAME_LEN_TO_MTU(buf_size));
@@ -726,14 +811,23 @@ netdev_dpdk_init(struct netdev *netdev, unsigned int
port_no,
netdev->requested_n_rxq = NR_QUEUE;
dev->real_n_txq = NR_QUEUE;
- if (type == DPDK_DEV_ETH) {
- netdev_dpdk_alloc_txq(dev, NR_QUEUE);
+ n_queues = (type == DPDK_DEV_VHOST_CUSE) ? OVS_VHOST_MAX_QUEUE_NUM :
+ NR_QUEUE;
+ netdev_dpdk_alloc_txq(dev, n_queues);
+ if (type != DPDK_DEV_VHOST_CUSE) {
err = dpdk_eth_dev_init(dev);
if (err) {
goto unlock;
}
- } else {
- netdev_dpdk_alloc_txq(dev, OVS_VHOST_MAX_QUEUE_NUM);
+ }
+
+ if (type == DPDK_DEV_VHOST_USER) {
+ rte_eth_dev_callback_register(port_no, RTE_ETH_EVENT_QUEUE_STATE,
+ (void*)vring_state_changed_callback,
+ NULL);
+ rte_eth_dev_callback_register(port_no, RTE_ETH_EVENT_INTR_LSC,
+ (void*)device_state_changed_callback,
+ NULL);
}
ovs_list_push_back(&dpdk_list, &dev->list_node);
@@ -768,26 +862,37 @@ dpdk_dev_parse_name(const char dev_name[], const char
prefix[],
}
static int
-vhost_construct_helper(struct netdev *netdev) OVS_REQUIRES(dpdk_mutex)
+netdev_dpdk_vhost_cuse_construct(struct netdev *netdev)
{
+ struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
+ int err;
+
+ ovs_mutex_lock(&dpdk_mutex);
+ strncpy(dev->vhost_id, netdev->name, sizeof(dev->vhost_id));
if (rte_eal_init_ret) {
return rte_eal_init_ret;
}
- return netdev_dpdk_init(netdev, -1, DPDK_DEV_VHOST);
+ rte_spinlock_init(&dev->vhost_cuse_tx_lock);
+
+ err = netdev_dpdk_init(netdev, -1, DPDK_DEV_VHOST_CUSE);
+
+ ovs_mutex_unlock(&dpdk_mutex);
+ return err;
}
static int
-netdev_dpdk_vhost_cuse_construct(struct netdev *netdev)
+get_vhost_user_drv_id(void)
{
- struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
- int err;
+ int i = 0;
- ovs_mutex_lock(&dpdk_mutex);
- strncpy(dev->vhost_id, netdev->name, sizeof(dev->vhost_id));
- err = vhost_construct_helper(netdev);
- ovs_mutex_unlock(&dpdk_mutex);
- return err;
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (vhost_user_drv_ids[i] == 0) {
+ return i;
+ }
+ }
+
+ return -1;
}
static int
@@ -796,6 +901,9 @@ netdev_dpdk_vhost_user_construct(struct netdev *netdev)
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
const char *name = netdev->name;
int err;
+ uint8_t port_no = 0;
+ char devargs[4096];
+ int driver_id = 0;
/* 'name' is appended to 'vhost_sock_dir' and used to create a socket in
* the file system. '/' or '\' would traverse directories, so they're not
@@ -807,22 +915,35 @@ netdev_dpdk_vhost_user_construct(struct netdev *netdev)
return EINVAL;
}
+ if (rte_eal_init_ret) {
+ return rte_eal_init_ret;
+ }
+
ovs_mutex_lock(&dpdk_mutex);
/* Take the name of the vhost-user port and append it to the location where
* the socket is to be created, then register the socket.
*/
snprintf(dev->vhost_id, sizeof(dev->vhost_id), "%s/%s",
vhost_sock_dir, name);
+ driver_id = get_vhost_user_drv_id();
+ if (driver_id == -1) {
+ VLOG_ERR("Too many vhost-user devices registered with PMD");
+ err = ENODEV;
+ } else {
+ snprintf(devargs, sizeof(devargs), "eth_vhost%u,iface=%s,queues=%i",
+ driver_id, dev->vhost_id, RTE_MAX_QUEUES_PER_PORT);
+ err = rte_eth_dev_attach(devargs, &port_no);
+ }
- err = rte_vhost_driver_register(dev->vhost_id);
if (err) {
- VLOG_ERR("vhost-user socket device setup failure for socket %s\n",
- dev->vhost_id);
+ VLOG_ERR("Failed to attach vhost-user device to DPDK");
} else {
fatal_signal_add_file_to_unlink(dev->vhost_id);
VLOG_INFO("Socket %s created for vhost-user port %s\n",
dev->vhost_id, name);
- err = vhost_construct_helper(netdev);
+ dev->vhost_pmd_id = driver_id;
+ vhost_user_drv_ids[dev->vhost_pmd_id] = 1;
+ err = netdev_dpdk_init(netdev, port_no, DPDK_DEV_VHOST_USER);
}
ovs_mutex_unlock(&dpdk_mutex);
@@ -857,6 +978,12 @@ netdev_dpdk_destruct(struct netdev *netdev)
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
ovs_mutex_lock(&dev->mutex);
+
+ if (dev->type == DPDK_DEV_VHOST_USER) {
+ rte_eth_dev_detach(dev->port_id, dev->vhost_id);
+ vhost_user_drv_ids[dev->vhost_pmd_id] = 0;
+ }
+
rte_eth_dev_stop(dev->port_id);
ovs_mutex_unlock(&dev->mutex);
@@ -868,7 +995,7 @@ netdev_dpdk_destruct(struct netdev *netdev)
}
static void
-netdev_dpdk_vhost_destruct(struct netdev *netdev)
+netdev_dpdk_vhost_cuse_destruct(struct netdev *netdev)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
@@ -876,15 +1003,8 @@ netdev_dpdk_vhost_destruct(struct netdev *netdev)
if (netdev_dpdk_get_virtio(dev) != NULL) {
VLOG_ERR("Removing port '%s' while vhost device still attached.",
netdev->name);
- VLOG_ERR("To restore connectivity after re-adding of port, VM on
socket"
- " '%s' must be restarted.",
- dev->vhost_id);
- }
-
- if (rte_vhost_driver_unregister(dev->vhost_id)) {
- VLOG_ERR("Unable to remove vhost-user socket %s", dev->vhost_id);
- } else {
- fatal_signal_remove_file_to_unlink(dev->vhost_id);
+ VLOG_ERR("To restore connectivity after re-adding of port, VM with"
+ "port '%s' must be restarted.", dev->vhost_id);
}
ovs_mutex_lock(&dpdk_mutex);
@@ -1000,30 +1120,6 @@ netdev_dpdk_vhost_cuse_set_multiq(struct netdev *netdev,
unsigned int n_txq,
netdev->n_txq = n_txq;
dev->real_n_txq = 1;
netdev->n_rxq = 1;
- dev->txq_needs_locking = dev->real_n_txq != netdev->n_txq;
-
- ovs_mutex_unlock(&dev->mutex);
- ovs_mutex_unlock(&dpdk_mutex);
-
- return err;
-}
-
-static int
-netdev_dpdk_vhost_set_multiq(struct netdev *netdev, unsigned int n_txq,
- unsigned int n_rxq)
-{
- struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
- int err = 0;
-
- if (netdev->n_txq == n_txq && netdev->n_rxq == n_rxq) {
- return err;
- }
-
- ovs_mutex_lock(&dpdk_mutex);
- ovs_mutex_lock(&dev->mutex);
-
- netdev->n_txq = n_txq;
- netdev->n_rxq = n_rxq;
ovs_mutex_unlock(&dev->mutex);
ovs_mutex_unlock(&dpdk_mutex);
@@ -1118,13 +1214,13 @@ dpdk_queue_flush(struct netdev_dpdk *dev, int qid)
}
static bool
-is_vhost_running(struct virtio_net *virtio_dev)
+is_vhost_cuse_running(struct virtio_net *virtio_dev)
{
return (virtio_dev != NULL && (virtio_dev->flags & VIRTIO_DEV_RUNNING));
}
static inline void
-netdev_dpdk_vhost_update_rx_counters(struct netdev_stats *stats,
+netdev_dpdk_vhost_cuse_update_rx_counters(struct netdev_stats *stats,
struct dp_packet **packets, int count)
{
int i;
@@ -1153,26 +1249,22 @@ netdev_dpdk_vhost_update_rx_counters(struct
netdev_stats *stats,
}
/*
- * The receive path for the vhost port is the TX path out from guest.
+ * The receive path for the vhost cuse port is the TX path out from guest.
*/
static int
-netdev_dpdk_vhost_rxq_recv(struct netdev_rxq *rxq,
+netdev_dpdk_vhost_cuse_rxq_recv(struct netdev_rxq *rxq,
struct dp_packet **packets, int *c)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(rxq->netdev);
struct virtio_net *virtio_dev = netdev_dpdk_get_virtio(dev);
- int qid = rxq->queue_id;
+ int qid = 1;
uint16_t nb_rx = 0;
- if (OVS_UNLIKELY(!is_vhost_running(virtio_dev))) {
+ if (OVS_UNLIKELY(!is_vhost_cuse_running(virtio_dev))) {
return EAGAIN;
}
- if (rxq->queue_id >= dev->real_n_rxq) {
- return EOPNOTSUPP;
- }
-
- nb_rx = rte_vhost_dequeue_burst(virtio_dev, qid * VIRTIO_QNUM + VIRTIO_TXQ,
+ nb_rx = rte_vhost_dequeue_burst(virtio_dev, qid,
dev->dpdk_mp->mp,
(struct rte_mbuf **)packets,
NETDEV_MAX_BURST);
@@ -1181,7 +1273,7 @@ netdev_dpdk_vhost_rxq_recv(struct netdev_rxq *rxq,
}
rte_spinlock_lock(&dev->stats_lock);
- netdev_dpdk_vhost_update_rx_counters(&dev->stats, packets, nb_rx);
+ netdev_dpdk_vhost_cuse_update_rx_counters(&dev->stats, packets, nb_rx);
rte_spinlock_unlock(&dev->stats_lock);
*c = (int) nb_rx;
@@ -1217,6 +1309,18 @@ netdev_dpdk_rxq_recv(struct netdev_rxq *rxq, struct
dp_packet **packets,
return 0;
}
+static int
+netdev_dpdk_vhost_user_rxq_recv(struct netdev_rxq *rxq,
+ struct dp_packet **packets, int *c)
+{
+ struct netdev_dpdk *dev = netdev_dpdk_cast(rxq->netdev);
+
+ if (rxq->queue_id >= dev->real_n_rxq) {
+ return EOPNOTSUPP;
+ }
+
+ return netdev_dpdk_rxq_recv(rxq, packets, c);
+}
static inline int
netdev_dpdk_qos_run__(struct netdev_dpdk *dev, struct rte_mbuf **pkts,
int cnt)
@@ -1235,7 +1339,7 @@ netdev_dpdk_qos_run__(struct netdev_dpdk *dev, struct
rte_mbuf **pkts,
}
static inline void
-netdev_dpdk_vhost_update_tx_counters(struct netdev_stats *stats,
+netdev_dpdk_vhost_cuse_update_tx_counters(struct netdev_stats *stats,
struct dp_packet **packets,
int attempted,
int dropped)
@@ -1252,9 +1356,8 @@ netdev_dpdk_vhost_update_tx_counters(struct netdev_stats
*stats,
}
static void
-__netdev_dpdk_vhost_send(struct netdev *netdev, int qid,
- struct dp_packet **pkts, int cnt,
- bool may_steal)
+__netdev_dpdk_vhost_cuse_send(struct netdev *netdev, struct dp_packet **pkts,
+ int cnt, bool may_steal)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
struct virtio_net *virtio_dev = netdev_dpdk_get_virtio(dev);
@@ -1263,26 +1366,24 @@ __netdev_dpdk_vhost_send(struct netdev *netdev, int qid,
unsigned int qos_pkts = cnt;
uint64_t start = 0;
- qid = dev->tx_q[qid % dev->real_n_txq].map;
-
- if (OVS_UNLIKELY(!is_vhost_running(virtio_dev) || qid < 0)) {
+ if (OVS_UNLIKELY(!is_vhost_cuse_running(virtio_dev))) {
rte_spinlock_lock(&dev->stats_lock);
dev->stats.tx_dropped+= cnt;
rte_spinlock_unlock(&dev->stats_lock);
goto out;
}
- rte_spinlock_lock(&dev->tx_q[qid].tx_lock);
+ /* There is a single vhost-cuse TX queue, So we need to lock it for TX. */
+ rte_spinlock_lock(&dev->vhost_cuse_tx_lock);
/* Check has QoS has been configured for the netdev */
cnt = netdev_dpdk_qos_run__(dev, cur_pkts, cnt);
qos_pkts -= cnt;
do {
- int vhost_qid = qid * VIRTIO_QNUM + VIRTIO_RXQ;
unsigned int tx_pkts;
- tx_pkts = rte_vhost_enqueue_burst(virtio_dev, vhost_qid,
+ tx_pkts = rte_vhost_enqueue_burst(virtio_dev, VIRTIO_RXQ,
cur_pkts, cnt);
if (OVS_LIKELY(tx_pkts)) {
/* Packets have been sent.*/
@@ -1301,7 +1402,7 @@ __netdev_dpdk_vhost_send(struct netdev *netdev, int qid,
* Unable to enqueue packets to vhost interface.
* Check available entries before retrying.
*/
- while (!rte_vring_available_entries(virtio_dev, vhost_qid)) {
+ while (!rte_vring_available_entries(virtio_dev, VIRTIO_RXQ)) {
if (OVS_UNLIKELY((rte_get_timer_cycles() - start) > timeout)) {
expired = 1;
break;
@@ -1313,12 +1414,12 @@ __netdev_dpdk_vhost_send(struct netdev *netdev, int qid,
}
}
} while (cnt);
-
- rte_spinlock_unlock(&dev->tx_q[qid].tx_lock);
+ rte_spinlock_unlock(&dev->vhost_cuse_tx_lock);
rte_spinlock_lock(&dev->stats_lock);
cnt += qos_pkts;
- netdev_dpdk_vhost_update_tx_counters(&dev->stats, pkts, total_pkts, cnt);
+ netdev_dpdk_vhost_cuse_update_tx_counters(&dev->stats, pkts, total_pkts,
+ cnt);
rte_spinlock_unlock(&dev->stats_lock);
out:
@@ -1412,8 +1513,9 @@ dpdk_do_tx_copy(struct netdev *netdev, int qid, struct
dp_packet **pkts,
newcnt++;
}
- if (dev->type == DPDK_DEV_VHOST) {
- __netdev_dpdk_vhost_send(netdev, qid, (struct dp_packet **) mbufs,
newcnt, true);
+ if (dev->type == DPDK_DEV_VHOST_CUSE) {
+ __netdev_dpdk_vhost_cuse_send(netdev, (struct dp_packet **) mbufs,
+ newcnt, true);
} else {
unsigned int qos_pkts = newcnt;
@@ -1437,8 +1539,8 @@ dpdk_do_tx_copy(struct netdev *netdev, int qid, struct
dp_packet **pkts,
}
static int
-netdev_dpdk_vhost_send(struct netdev *netdev, int qid, struct dp_packet **pkts,
- int cnt, bool may_steal)
+netdev_dpdk_vhost_cuse_send(struct netdev *netdev, int qid OVS_UNUSED,
+ struct dp_packet **pkts, int cnt, bool may_steal)
{
if (OVS_UNLIKELY(pkts[0]->source != DPBUF_DPDK)) {
int i;
@@ -1450,7 +1552,7 @@ netdev_dpdk_vhost_send(struct netdev *netdev, int qid,
struct dp_packet **pkts,
}
}
} else {
- __netdev_dpdk_vhost_send(netdev, qid, pkts, cnt, may_steal);
+ __netdev_dpdk_vhost_cuse_send(netdev, pkts, cnt, may_steal);
}
return 0;
}
@@ -1461,11 +1563,6 @@ netdev_dpdk_send__(struct netdev_dpdk *dev, int qid,
{
int i;
- if (OVS_UNLIKELY(dev->txq_needs_locking)) {
- qid = qid % dev->real_n_txq;
- rte_spinlock_lock(&dev->tx_q[qid].tx_lock);
- }
-
if (OVS_UNLIKELY(!may_steal ||
pkts[0]->source != DPBUF_DPDK)) {
struct netdev *netdev = &dev->up;
@@ -1541,6 +1638,18 @@ netdev_dpdk_eth_send(struct netdev *netdev, int qid,
}
static int
+netdev_dpdk_vhost_user_send(struct netdev *netdev, int qid,
+ struct dp_packet **pkts, int cnt, bool may_steal)
+{
+ struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
+
+ qid = qid % dev->real_n_txq;
+
+ netdev_dpdk_send__(dev, qid, pkts, cnt, may_steal);
+ return 0;
+}
+
+static int
netdev_dpdk_set_etheraddr(struct netdev *netdev, const struct eth_addr mac)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
@@ -1634,7 +1743,7 @@ static int
netdev_dpdk_get_carrier(const struct netdev *netdev, bool *carrier);
static int
-netdev_dpdk_vhost_get_stats(const struct netdev *netdev,
+netdev_dpdk_vhost_cuse_get_stats(const struct netdev *netdev,
struct netdev_stats *stats)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
@@ -1796,14 +1905,14 @@ netdev_dpdk_get_carrier(const struct netdev *netdev,
bool *carrier)
}
static int
-netdev_dpdk_vhost_get_carrier(const struct netdev *netdev, bool *carrier)
+netdev_dpdk_vhost_cuse_get_carrier(const struct netdev *netdev, bool *carrier)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
struct virtio_net *virtio_dev = netdev_dpdk_get_virtio(dev);
ovs_mutex_lock(&dev->mutex);
- if (is_vhost_running(virtio_dev)) {
+ if (is_vhost_cuse_running(virtio_dev)) {
*carrier = 1;
} else {
*carrier = 0;
@@ -1853,7 +1962,7 @@ netdev_dpdk_update_flags__(struct netdev_dpdk *dev,
return 0;
}
- if (dev->type == DPDK_DEV_ETH) {
+ if (dev->type != DPDK_DEV_VHOST_CUSE) {
if (dev->flags & NETDEV_UP) {
err = rte_eth_dev_start(dev->port_id);
if (err)
@@ -1998,75 +2107,7 @@ set_irq_status(struct virtio_net *virtio_dev)
}
/*
- * Fixes mapping for vhost-user tx queues. Must be called after each
- * enabling/disabling of queues and real_n_txq modifications.
- */
-static void
-netdev_dpdk_remap_txqs(struct netdev_dpdk *dev)
- OVS_REQUIRES(dev->mutex)
-{
- int *enabled_queues, n_enabled = 0;
- int i, k, total_txqs = dev->real_n_txq;
-
- enabled_queues = dpdk_rte_mzalloc(total_txqs * sizeof *enabled_queues);
-
- for (i = 0; i < total_txqs; i++) {
- /* Enabled queues always mapped to themselves. */
- if (dev->tx_q[i].map == i) {
- enabled_queues[n_enabled++] = i;
- }
- }
-
- if (n_enabled == 0 && total_txqs != 0) {
- enabled_queues[0] = OVS_VHOST_QUEUE_DISABLED;
- n_enabled = 1;
- }
-
- k = 0;
- for (i = 0; i < total_txqs; i++) {
- if (dev->tx_q[i].map != i) {
- dev->tx_q[i].map = enabled_queues[k];
- k = (k + 1) % n_enabled;
- }
- }
-
- VLOG_DBG("TX queue mapping for %s\n", dev->vhost_id);
- for (i = 0; i < total_txqs; i++) {
- VLOG_DBG("%2d --> %2d", i, dev->tx_q[i].map);
- }
-
- rte_free(enabled_queues);
-}
-
-static int
-netdev_dpdk_vhost_set_queues(struct netdev_dpdk *dev, struct virtio_net
*virtio_dev)
- OVS_REQUIRES(dev->mutex)
-{
- uint32_t qp_num;
-
- qp_num = virtio_dev->virt_qp_nb;
- if (qp_num > dev->up.n_rxq) {
- VLOG_ERR("vHost Device '%s' %"PRIu64" can't be added - "
- "too many queues %d > %d", virtio_dev->ifname,
virtio_dev->device_fh,
- qp_num, dev->up.n_rxq);
- return -1;
- }
-
- dev->real_n_rxq = qp_num;
- dev->real_n_txq = qp_num;
- dev->txq_needs_locking = true;
- /* Enable TX queue 0 by default if it wasn't disabled. */
- if (dev->tx_q[0].map == OVS_VHOST_QUEUE_MAP_UNKNOWN) {
- dev->tx_q[0].map = 0;
- }
-
- netdev_dpdk_remap_txqs(dev);
-
- return 0;
-}
-
-/*
- * A new virtio-net device is added to a vhost port.
+ * A new virtio-net device is added to a vhost cuse port.
*/
static int
new_device(struct virtio_net *virtio_dev)
@@ -2079,11 +2120,6 @@ new_device(struct virtio_net *virtio_dev)
LIST_FOR_EACH(dev, list_node, &dpdk_list) {
if (strncmp(virtio_dev->ifname, dev->vhost_id, IF_NAME_SZ) == 0) {
ovs_mutex_lock(&dev->mutex);
- if (netdev_dpdk_vhost_set_queues(dev, virtio_dev)) {
- ovs_mutex_unlock(&dev->mutex);
- ovs_mutex_unlock(&dpdk_mutex);
- return -1;
- }
ovsrcu_set(&dev->virtio_dev, virtio_dev);
exists = true;
virtio_dev->flags |= VIRTIO_DEV_RUNNING;
@@ -2107,23 +2143,11 @@ new_device(struct virtio_net *virtio_dev)
return 0;
}
-/* Clears mapping for all available queues of vhost interface. */
-static void
-netdev_dpdk_txq_map_clear(struct netdev_dpdk *dev)
- OVS_REQUIRES(dev->mutex)
-{
- int i;
-
- for (i = 0; i < dev->real_n_txq; i++) {
- dev->tx_q[i].map = OVS_VHOST_QUEUE_MAP_UNKNOWN;
- }
-}
-
/*
- * Remove a virtio-net device from the specific vhost port. Use dev->remove
- * flag to stop any more packets from being sent or received to/from a VM and
- * ensure all currently queued packets have been sent/received before removing
- * the device.
+ * Remove a virtio-net device from the specific vhost cuse port. Use
+ * dev->remove flag to stop any more packets from being sent or received
+ * to/from a VM and ensure all currently queued packets have been sent/received
+ * before removing the device.
*/
static void
destroy_device(volatile struct virtio_net *virtio_dev)
@@ -2138,7 +2162,6 @@ destroy_device(volatile struct virtio_net *virtio_dev)
ovs_mutex_lock(&dev->mutex);
virtio_dev->flags &= ~VIRTIO_DEV_RUNNING;
ovsrcu_set(&dev->virtio_dev, NULL);
- netdev_dpdk_txq_map_clear(dev);
exists = true;
ovs_mutex_unlock(&dev->mutex);
break;
@@ -2166,49 +2189,6 @@ destroy_device(volatile struct virtio_net *virtio_dev)
}
}
-static int
-vring_state_changed(struct virtio_net *virtio_dev, uint16_t queue_id,
- int enable)
-{
- struct netdev_dpdk *dev;
- bool exists = false;
- int qid = queue_id / VIRTIO_QNUM;
-
- if (queue_id % VIRTIO_QNUM == VIRTIO_TXQ) {
- return 0;
- }
-
- ovs_mutex_lock(&dpdk_mutex);
- LIST_FOR_EACH (dev, list_node, &dpdk_list) {
- if (strncmp(virtio_dev->ifname, dev->vhost_id, IF_NAME_SZ) == 0) {
- ovs_mutex_lock(&dev->mutex);
- if (enable) {
- dev->tx_q[qid].map = qid;
- } else {
- dev->tx_q[qid].map = OVS_VHOST_QUEUE_DISABLED;
- }
- netdev_dpdk_remap_txqs(dev);
- exists = true;
- ovs_mutex_unlock(&dev->mutex);
- break;
- }
- }
- ovs_mutex_unlock(&dpdk_mutex);
-
- if (exists) {
- VLOG_INFO("State of queue %d ( tx_qid %d ) of vhost device '%s' %"
- PRIu64" changed to \'%s\'", queue_id, qid,
- virtio_dev->ifname, virtio_dev->device_fh,
- (enable == 1) ? "enabled" : "disabled");
- } else {
- VLOG_INFO("vHost Device '%s' %"PRIu64" not found", virtio_dev->ifname,
- virtio_dev->device_fh);
- return -1;
- }
-
- return 0;
-}
-
struct virtio_net *
netdev_dpdk_get_virtio(const struct netdev_dpdk *dev)
{
@@ -2216,18 +2196,17 @@ netdev_dpdk_get_virtio(const struct netdev_dpdk *dev)
}
/*
- * These callbacks allow virtio-net devices to be added to vhost ports when
- * configuration has been fully complete.
+ * These callbacks allow virtio-net devices to be added to vhost cuse ports
+ * when configuration has been fully complete.
*/
static const struct virtio_net_device_ops virtio_net_device_ops =
{
.new_device = new_device,
.destroy_device = destroy_device,
- .vring_state_changed = vring_state_changed
};
static void *
-start_vhost_loop(void *dummy OVS_UNUSED)
+start_vhost_cuse_loop(void *dummy OVS_UNUSED)
{
pthread_detach(pthread_self());
/* Put the cuse thread into quiescent state. */
@@ -2237,19 +2216,7 @@ start_vhost_loop(void *dummy OVS_UNUSED)
}
static int
-dpdk_vhost_class_init(void)
-{
- rte_vhost_driver_callback_register(&virtio_net_device_ops);
- rte_vhost_feature_disable(1ULL << VIRTIO_NET_F_HOST_TSO4
- | 1ULL << VIRTIO_NET_F_HOST_TSO6
- | 1ULL << VIRTIO_NET_F_CSUM);
-
- ovs_thread_create("vhost_thread", start_vhost_loop, NULL);
- return 0;
-}
-
-static int
-dpdk_vhost_cuse_class_init(void)
+netdev_dpdk_vhost_cuse_class_init(void)
{
int err = -1;
@@ -2265,14 +2232,12 @@ dpdk_vhost_cuse_class_init(void)
return -1;
}
- dpdk_vhost_class_init();
- return 0;
-}
+ rte_vhost_driver_callback_register(&virtio_net_device_ops);
+ rte_vhost_feature_disable(1ULL << VIRTIO_NET_F_HOST_TSO4
+ | 1ULL << VIRTIO_NET_F_HOST_TSO6
+ | 1ULL << VIRTIO_NET_F_CSUM);
+ ovs_thread_create("vhost_cuse_thread", start_vhost_cuse_loop, NULL);
-static int
-dpdk_vhost_user_class_init(void)
-{
- dpdk_vhost_class_init();
return 0;
}
@@ -2859,30 +2824,30 @@ static const struct netdev_class dpdk_ring_class =
static const struct netdev_class OVS_UNUSED dpdk_vhost_cuse_class =
NETDEV_DPDK_CLASS(
"dpdkvhostcuse",
- dpdk_vhost_cuse_class_init,
+ netdev_dpdk_vhost_cuse_class_init,
netdev_dpdk_vhost_cuse_construct,
- netdev_dpdk_vhost_destruct,
+ netdev_dpdk_vhost_cuse_destruct,
netdev_dpdk_vhost_cuse_set_multiq,
- netdev_dpdk_vhost_send,
- netdev_dpdk_vhost_get_carrier,
- netdev_dpdk_vhost_get_stats,
+ netdev_dpdk_vhost_cuse_send,
+ netdev_dpdk_vhost_cuse_get_carrier,
+ netdev_dpdk_vhost_cuse_get_stats,
NULL,
NULL,
- netdev_dpdk_vhost_rxq_recv);
+ netdev_dpdk_vhost_cuse_rxq_recv);
static const struct netdev_class OVS_UNUSED dpdk_vhost_user_class =
NETDEV_DPDK_CLASS(
"dpdkvhostuser",
- dpdk_vhost_user_class_init,
- netdev_dpdk_vhost_user_construct,
- netdev_dpdk_vhost_destruct,
- netdev_dpdk_vhost_set_multiq,
- netdev_dpdk_vhost_send,
- netdev_dpdk_vhost_get_carrier,
- netdev_dpdk_vhost_get_stats,
- NULL,
NULL,
- netdev_dpdk_vhost_rxq_recv);
+ netdev_dpdk_vhost_user_construct,
+ netdev_dpdk_destruct,
+ netdev_dpdk_set_multiq,
+ netdev_dpdk_vhost_user_send,
+ netdev_dpdk_get_carrier,
+ netdev_dpdk_get_stats,
+ netdev_dpdk_get_features,
+ netdev_dpdk_get_status,
+ netdev_dpdk_vhost_user_rxq_recv);
void
netdev_dpdk_register(void)
--
2.4.3
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