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authorMohsin Kazmi <sykazmi@cisco.com>2022-03-31 21:59:15 +0000
committerDamjan Marion <dmarion@me.com>2022-04-08 16:17:49 +0000
commit90998bc00253730fc640d51e9995e71c2abbd6d0 (patch)
tree9ce9e907902ebde860ecc023d8306a08ccf569dd /src/plugins/dpdk
parentbf91b48cbba65336de2043028f54b4b813325f3d (diff)
dpdk: add multi-txq support
Type: improvement Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> Change-Id: I9f061a05d947bc2867e1b962bf0522ad344bcc1a
Diffstat (limited to 'src/plugins/dpdk')
-rw-r--r--src/plugins/dpdk/device/common.c4
-rw-r--r--src/plugins/dpdk/device/device.c23
-rw-r--r--src/plugins/dpdk/device/dpdk.h1
-rw-r--r--src/plugins/dpdk/device/init.c16
4 files changed, 31 insertions, 13 deletions
diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c
index f543723126f..a37659508dc 100644
--- a/src/plugins/dpdk/device/common.c
+++ b/src/plugins/dpdk/device/common.c
@@ -58,7 +58,6 @@ dpdk_device_setup (dpdk_device_t * xd)
{
vlib_main_t *vm = vlib_get_main ();
vnet_main_t *vnm = vnet_get_main ();
- vlib_thread_main_t *tm = vlib_get_thread_main ();
vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, xd->sw_if_index);
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
u16 buf_sz = vlib_buffer_get_default_data_size (vm);
@@ -222,8 +221,7 @@ retry:
if (rv < 0)
dpdk_device_error (xd, "rte_eth_tx_queue_setup", rv);
- if (xd->conf.n_tx_queues < tm->n_vlib_mains)
- clib_spinlock_init (&vec_elt (xd->tx_queues, j).lock);
+ clib_spinlock_init (&vec_elt (xd->tx_queues, j).lock);
}
vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c
index b6a048e8ab9..1d97eee8055 100644
--- a/src/plugins/dpdk/device/device.c
+++ b/src/plugins/dpdk/device/device.c
@@ -152,28 +152,28 @@ dpdk_validate_rte_mbuf (vlib_main_t * vm, vlib_buffer_t * b,
* support multiple queues. It returns the number of packets untransmitted
* If all packets are transmitted (the normal case), the function returns 0.
*/
-static_always_inline
- u32 tx_burst_vector_internal (vlib_main_t * vm,
- dpdk_device_t * xd,
- struct rte_mbuf **mb, u32 n_left)
+static_always_inline u32
+tx_burst_vector_internal (vlib_main_t *vm, dpdk_device_t *xd,
+ struct rte_mbuf **mb, u32 n_left, int queue_id,
+ u8 is_shared)
{
dpdk_tx_queue_t *txq;
u32 n_retry;
int n_sent = 0;
- int queue_id;
n_retry = 16;
- queue_id = vm->thread_index % xd->conf.n_tx_queues;
txq = vec_elt_at_index (xd->tx_queues, queue_id);
do
{
- clib_spinlock_lock_if_init (&txq->lock);
+ if (is_shared)
+ clib_spinlock_lock (&txq->lock);
/* no wrap, transmit in one burst */
n_sent = rte_eth_tx_burst (xd->port_id, queue_id, mb, n_left);
- clib_spinlock_unlock_if_init (&txq->lock);
+ if (is_shared)
+ clib_spinlock_unlock (&txq->lock);
n_retry--;
n_left -= n_sent;
@@ -276,10 +276,12 @@ VNET_DEVICE_CLASS_TX_FN (dpdk_device_class) (vlib_main_t * vm,
dpdk_main_t *dm = &dpdk_main;
vnet_interface_output_runtime_t *rd = (void *) node->runtime_data;
dpdk_device_t *xd = vec_elt_at_index (dm->devices, rd->dev_instance);
+ vnet_hw_if_tx_frame_t *tf = vlib_frame_scalar_args (f);
u32 n_packets = f->n_vectors;
u32 n_left;
u32 thread_index = vm->thread_index;
- int queue_id = thread_index;
+ int queue_id = tf->queue_id;
+ u8 is_shared = tf->shared_queue;
u32 tx_pkts = 0;
dpdk_per_thread_data_t *ptd = vec_elt_at_index (dm->per_thread_data,
thread_index);
@@ -418,7 +420,8 @@ VNET_DEVICE_CLASS_TX_FN (dpdk_device_class) (vlib_main_t * vm,
/* transmit as many packets as possible */
tx_pkts = n_packets = mb - ptd->mbufs;
- n_left = tx_burst_vector_internal (vm, xd, ptd->mbufs, n_packets);
+ n_left = tx_burst_vector_internal (vm, xd, ptd->mbufs, n_packets, queue_id,
+ is_shared);
{
/* If there is no callback then drop any non-transmitted packets */
diff --git a/src/plugins/dpdk/device/dpdk.h b/src/plugins/dpdk/device/dpdk.h
index 6f3680c17a1..008c82df7b0 100644
--- a/src/plugins/dpdk/device/dpdk.h
+++ b/src/plugins/dpdk/device/dpdk.h
@@ -94,6 +94,7 @@ typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
clib_spinlock_t lock;
+ u32 queue_index;
} dpdk_tx_queue_t;
typedef struct
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index 13cecda9bf4..6d3b8643147 100644
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -24,6 +24,7 @@
#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/interface/rx_queue_funcs.h>
+#include <vnet/interface/tx_queue_funcs.h>
#include <dpdk/buffer.h>
#include <dpdk/device/dpdk.h>
#include <dpdk/cryptodev/cryptodev.h>
@@ -429,6 +430,8 @@ dpdk_lib_init (dpdk_main_t * dm)
vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1,
+ CLIB_CACHE_LINE_BYTES);
rte_eth_macaddr_get (port_id, (void *) addr);
@@ -469,6 +472,19 @@ dpdk_lib_init (dpdk_main_t * dm)
vnm, xd->hw_if_index, q, VNET_HW_IF_RXQ_THREAD_ANY);
}
+ for (q = 0; q < xd->conf.n_tx_queues; q++)
+ {
+ dpdk_tx_queue_t *txq = vec_elt_at_index (xd->tx_queues, q);
+ txq->queue_index =
+ vnet_hw_if_register_tx_queue (vnm, xd->hw_if_index, q);
+ }
+
+ for (q = 0; q < tm->n_vlib_mains; q++)
+ {
+ u32 qi = xd->tx_queues[q % xd->conf.n_tx_queues].queue_index;
+ vnet_hw_if_tx_queue_assign_thread (vnm, qi, q);
+ }
+
if (devconf->tso == DPDK_DEVICE_TSO_ON)
{
/*tcp_udp checksum must be enabled*/