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path: root/src/vnet/devices/virtio/vhost_user.c
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Diffstat (limited to 'src/vnet/devices/virtio/vhost_user.c')
-rw-r--r--src/vnet/devices/virtio/vhost_user.c95
1 files changed, 51 insertions, 44 deletions
diff --git a/src/vnet/devices/virtio/vhost_user.c b/src/vnet/devices/virtio/vhost_user.c
index 7ea7cbef995..089e08aabb4 100644
--- a/src/vnet/devices/virtio/vhost_user.c
+++ b/src/vnet/devices/virtio/vhost_user.c
@@ -37,6 +37,7 @@
#include <vnet/devices/devices.h>
#include <vnet/feature/feature.h>
#include <vnet/interface/rx_queue_funcs.h>
+#include <vnet/interface/tx_queue_funcs.h>
#include <vnet/devices/virtio/vhost_user.h>
#include <vnet/devices/virtio/vhost_user_inline.h>
@@ -116,40 +117,45 @@ unmap_all_mem_regions (vhost_user_intf_t * vui)
}
static_always_inline void
-vhost_user_tx_thread_placement (vhost_user_intf_t * vui)
+vhost_user_tx_thread_placement (vhost_user_intf_t *vui, u32 qid)
{
- //Let's try to assign one queue to each thread
- u32 qid;
- u32 thread_index = 0;
+ vnet_main_t *vnm = vnet_get_main ();
+ vhost_user_vring_t *rxvq = &vui->vrings[qid];
+ u32 q = qid >> 1, rxvq_count;
- vui->use_tx_spinlock = 0;
- while (1)
+ ASSERT ((qid & 1) == 0);
+ if (!rxvq->started || !rxvq->enabled)
+ return;
+
+ rxvq_count = (qid >> 1) + 1;
+ if (rxvq->queue_index == ~0)
{
- for (qid = 0; qid < vui->num_qid / 2; qid++)
- {
- vhost_user_vring_t *rxvq = &vui->vrings[VHOST_VRING_IDX_RX (qid)];
- if (!rxvq->started || !rxvq->enabled)
- continue;
-
- vui->per_cpu_tx_qid[thread_index] = qid;
- thread_index++;
- if (thread_index == vlib_get_thread_main ()->n_vlib_mains)
- return;
- }
- //We need to loop, meaning the spinlock has to be used
- vui->use_tx_spinlock = 1;
- if (thread_index == 0)
- {
- //Could not find a single valid one
- for (thread_index = 0;
- thread_index < vlib_get_thread_main ()->n_vlib_mains;
- thread_index++)
- {
- vui->per_cpu_tx_qid[thread_index] = 0;
- }
- return;
- }
+ rxvq->queue_index =
+ vnet_hw_if_register_tx_queue (vnm, vui->hw_if_index, q);
+ rxvq->qid = q;
+ }
+
+ FOR_ALL_VHOST_RXQ (q, vui)
+ {
+ vhost_user_vring_t *rxvq = &vui->vrings[q];
+ u32 qi = rxvq->queue_index;
+
+ if (rxvq->queue_index == ~0)
+ break;
+ for (u32 i = 0; i < vlib_get_n_threads (); i++)
+ vnet_hw_if_tx_queue_unassign_thread (vnm, qi, i);
+ }
+
+ for (u32 i = 0; i < vlib_get_n_threads (); i++)
+ {
+ vhost_user_vring_t *rxvq =
+ &vui->vrings[VHOST_VRING_IDX_RX (i % rxvq_count)];
+ u32 qi = rxvq->queue_index;
+
+ vnet_hw_if_tx_queue_assign_thread (vnm, qi, i);
}
+
+ vnet_hw_if_update_runtime_data (vnm, vui->hw_if_index);
}
/**
@@ -243,7 +249,7 @@ vhost_user_thread_placement (vhost_user_intf_t * vui, u32 qid)
vhost_user_rx_thread_placement (vui, qid);
}
else
- vhost_user_tx_thread_placement (vui);
+ vhost_user_tx_thread_placement (vui, qid);
}
static clib_error_t *
@@ -1657,10 +1663,6 @@ vhost_user_vui_init (vnet_main_t * vnm, vhost_user_intf_t * vui,
if (sw_if_index)
*sw_if_index = vui->sw_if_index;
-
- vec_validate (vui->per_cpu_tx_qid,
- vlib_get_thread_main ()->n_vlib_mains - 1);
- vhost_user_tx_thread_placement (vui);
}
int
@@ -2130,7 +2132,6 @@ show_vhost_user_command_fn (vlib_main_t * vm,
u32 hw_if_index, *hw_if_indices = 0;
vnet_hw_interface_t *hi;
u16 qid;
- u32 ci;
int i, j, q;
int show_descr = 0;
int show_verbose = 0;
@@ -2263,13 +2264,20 @@ show_vhost_user_command_fn (vlib_main_t * vm,
txvq->mode);
}
- vlib_cli_output (vm, " tx placement: %s\n",
- vui->use_tx_spinlock ? "spin-lock" : "lock-free");
+ vlib_cli_output (vm, " tx placement\n");
- vec_foreach_index (ci, vui->per_cpu_tx_qid)
+ FOR_ALL_VHOST_RXQ (qid, vui)
{
- vlib_cli_output (vm, " thread %d on vring %d\n", ci,
- VHOST_VRING_IDX_RX (vui->per_cpu_tx_qid[ci]));
+ vhost_user_vring_t *rxvq = &vui->vrings[qid];
+ vnet_hw_if_tx_queue_t *txq;
+
+ if (rxvq->queue_index == ~0)
+ continue;
+ txq = vnet_hw_if_get_tx_queue (vnm, rxvq->queue_index);
+ if (txq->threads)
+ vlib_cli_output (vm, " threads %U on vring %u: %s\n",
+ format_bitmap_list, txq->threads, qid,
+ txq->shared_queue ? "spin-lock" : "lock-free");
}
vlib_cli_output (vm, "\n");
@@ -2302,9 +2310,8 @@ show_vhost_user_command_fn (vlib_main_t * vm,
vlib_cli_output (vm, "\n Virtqueue %d (%s%s)\n", q,
(q & 1) ? "RX" : "TX",
vui->vrings[q].enabled ? "" : " disabled");
- if (q & 1)
- vlib_cli_output (vm, " global RX queue index %u\n",
- vui->vrings[q].queue_index);
+ vlib_cli_output (vm, " global %s queue index %u\n",
+ (q & 1) ? "RX" : "TX", vui->vrings[q].queue_index);
vlib_cli_output (
vm,