vhost-user: cleanup
Change-Id: Ibf68423e9514b8e85cdf0a3e57ababd55dd4fcc4
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/devices/virtio/vhost_user_input.c b/src/vnet/devices/virtio/vhost_user_input.c
index 32b924f..664fc38 100644
--- a/src/vnet/devices/virtio/vhost_user_input.c
+++ b/src/vnet/devices/virtio/vhost_user_input.c
@@ -256,7 +256,7 @@
u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
u32 n_trace = vlib_get_trace_count (vm, node);
u32 map_hint = 0;
- u16 thread_index = vm->thread_index;
+ vhost_cpu_t *cpu = &vum->cpus[vm->thread_index];
u16 copy_len = 0;
/* The descriptor table is not ready yet */
@@ -338,34 +338,31 @@
* processing cost really comes from the memory copy.
* The assumption is that big packets will fit in 40 buffers.
*/
- if (PREDICT_FALSE (vum->cpus[thread_index].rx_buffers_len < n_left + 1 ||
- vum->cpus[thread_index].rx_buffers_len < 40))
+ if (PREDICT_FALSE (cpu->rx_buffers_len < n_left + 1 ||
+ cpu->rx_buffers_len < 40))
{
- u32 curr_len = vum->cpus[thread_index].rx_buffers_len;
- vum->cpus[thread_index].rx_buffers_len +=
- vlib_buffer_alloc_from_free_list (vm,
- vum->cpus[thread_index].rx_buffers +
- curr_len,
+ u32 curr_len = cpu->rx_buffers_len;
+ cpu->rx_buffers_len +=
+ vlib_buffer_alloc_from_free_list (vm, cpu->rx_buffers + curr_len,
VHOST_USER_RX_BUFFERS_N - curr_len,
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
if (PREDICT_FALSE
- (vum->cpus[thread_index].rx_buffers_len <
- VHOST_USER_RX_BUFFER_STARVATION))
+ (cpu->rx_buffers_len < VHOST_USER_RX_BUFFER_STARVATION))
{
/* In case of buffer starvation, discard some packets from the queue
* and log the event.
* We keep doing best effort for the remaining packets. */
- u32 flush = (n_left + 1 > vum->cpus[thread_index].rx_buffers_len) ?
- n_left + 1 - vum->cpus[thread_index].rx_buffers_len : 1;
+ u32 flush = (n_left + 1 > cpu->rx_buffers_len) ?
+ n_left + 1 - cpu->rx_buffers_len : 1;
flush = vhost_user_rx_discard_packet (vm, vui, txvq, flush);
n_left -= flush;
vlib_increment_simple_counter (vnet_main.
interface_main.sw_if_counters +
VNET_INTERFACE_COUNTER_DROP,
- vlib_get_thread_index (),
- vui->sw_if_index, flush);
+ vm->thread_index, vui->sw_if_index,
+ flush);
vlib_error_count (vm, vhost_user_input_node.index,
VHOST_USER_INPUT_FUNC_ERROR_NO_BUFFER, flush);
@@ -384,7 +381,7 @@
u32 desc_data_offset;
vring_desc_t *desc_table = txvq->desc;
- if (PREDICT_FALSE (vum->cpus[thread_index].rx_buffers_len <= 1))
+ if (PREDICT_FALSE (cpu->rx_buffers_len <= 1))
{
/* Not enough rx_buffers
* Note: We yeld on 1 so we don't need to do an additional
@@ -396,19 +393,15 @@
desc_current =
txvq->avail->ring[txvq->last_avail_idx & txvq->qsz_mask];
- vum->cpus[thread_index].rx_buffers_len--;
- bi_current = (vum->cpus[thread_index].rx_buffers)
- [vum->cpus[thread_index].rx_buffers_len];
+ cpu->rx_buffers_len--;
+ bi_current = cpu->rx_buffers[cpu->rx_buffers_len];
b_head = b_current = vlib_get_buffer (vm, bi_current);
to_next[0] = bi_current; //We do that now so we can forget about bi_current
to_next++;
n_left_to_next--;
- vlib_prefetch_buffer_with_index (vm,
- (vum->
- cpus[thread_index].rx_buffers)
- [vum->cpus[thread_index].
- rx_buffers_len - 1], LOAD);
+ vlib_prefetch_buffer_with_index
+ (vm, cpu->rx_buffers[cpu->rx_buffers_len - 1], LOAD);
/* Just preset the used descriptor id and length for later */
txvq->used->ring[txvq->last_used_idx & txvq->qsz_mask].id =
@@ -483,8 +476,7 @@
if (PREDICT_FALSE
(b_current->current_length == VLIB_BUFFER_DATA_SIZE))
{
- if (PREDICT_FALSE
- (vum->cpus[thread_index].rx_buffers_len == 0))
+ if (PREDICT_FALSE (cpu->rx_buffers_len == 0))
{
/* Cancel speculation */
to_next--;
@@ -497,19 +489,14 @@
* not an issue as they would still be valid. Useless,
* but valid.
*/
- vhost_user_input_rewind_buffers (vm,
- &vum->cpus
- [thread_index],
- b_head);
+ vhost_user_input_rewind_buffers (vm, cpu, b_head);
n_left = 0;
goto stop;
}
/* Get next output */
- vum->cpus[thread_index].rx_buffers_len--;
- u32 bi_next =
- (vum->cpus[thread_index].rx_buffers)[vum->cpus
- [thread_index].rx_buffers_len];
+ cpu->rx_buffers_len--;
+ u32 bi_next = cpu->rx_buffers[cpu->rx_buffers_len];
b_current->next_buffer = bi_next;
b_current->flags |= VLIB_BUFFER_NEXT_PRESENT;
bi_current = bi_next;
@@ -517,7 +504,7 @@
}
/* Prepare a copy order executed later for the data */
- vhost_copy_t *cpy = &vum->cpus[thread_index].copy[copy_len];
+ vhost_copy_t *cpy = &cpu->copy[copy_len];
copy_len++;
u32 desc_data_l =
desc_table[desc_current].len - desc_data_offset;
@@ -574,9 +561,8 @@
*/
if (PREDICT_FALSE (copy_len >= VHOST_USER_RX_COPY_THRESHOLD))
{
- if (PREDICT_FALSE
- (vhost_user_input_copy (vui, vum->cpus[thread_index].copy,
- copy_len, &map_hint)))
+ if (PREDICT_FALSE (vhost_user_input_copy (vui, cpu->copy,
+ copy_len, &map_hint)))
{
vlib_error_count (vm, node->node_index,
VHOST_USER_INPUT_FUNC_ERROR_MMAP_FAIL, 1);
@@ -594,9 +580,8 @@
}
/* Do the memory copies */
- if (PREDICT_FALSE
- (vhost_user_input_copy (vui, vum->cpus[thread_index].copy,
- copy_len, &map_hint)))
+ if (PREDICT_FALSE (vhost_user_input_copy (vui, cpu->copy, copy_len,
+ &map_hint)))
{
vlib_error_count (vm, node->node_index,
VHOST_USER_INPUT_FUNC_ERROR_MMAP_FAIL, 1);
@@ -620,10 +605,10 @@
/* increase rx counters */
vlib_increment_combined_counter
(vnet_main.interface_main.combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
- vlib_get_thread_index (), vui->sw_if_index, n_rx_packets, n_rx_bytes);
+ + VNET_INTERFACE_COUNTER_RX, vm->thread_index, vui->sw_if_index,
+ n_rx_packets, n_rx_bytes);
- vnet_device_increment_rx_packets (thread_index, n_rx_packets);
+ vnet_device_increment_rx_packets (vm->thread_index, n_rx_packets);
return n_rx_packets;
}
diff --git a/src/vnet/devices/virtio/vhost_user_output.c b/src/vnet/devices/virtio/vhost_user_output.c
index 58db1a9..4fbd63e 100644
--- a/src/vnet/devices/virtio/vhost_user_output.c
+++ b/src/vnet/devices/virtio/vhost_user_output.c
@@ -240,6 +240,7 @@
vhost_user_vring_t *rxvq;
u8 error;
u32 thread_index = vm->thread_index;
+ vhost_cpu_t *cpu = &vum->cpus[thread_index];
u32 map_hint = 0;
u8 retry = 8;
u16 copy_len;
@@ -257,9 +258,8 @@
goto done3;
}
- qid =
- VHOST_VRING_IDX_RX (*vec_elt_at_index
- (vui->per_cpu_tx_qid, thread_index));
+ qid = VHOST_VRING_IDX_RX (*vec_elt_at_index (vui->per_cpu_tx_qid,
+ thread_index));
rxvq = &vui->vrings[qid];
if (PREDICT_FALSE (rxvq->avail == 0))
{
@@ -290,11 +290,9 @@
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
- vum->cpus[thread_index].current_trace =
- vlib_add_trace (vm, node, b0,
- sizeof (*vum->cpus[thread_index].current_trace));
- vhost_user_tx_trace (vum->cpus[thread_index].current_trace,
- vui, qid / 2, b0, rxvq);
+ cpu->current_trace = vlib_add_trace (vm, node, b0,
+ sizeof (*cpu->current_trace));
+ vhost_user_tx_trace (cpu->current_trace, vui, qid / 2, b0, rxvq);
}
if (PREDICT_FALSE (rxvq->last_avail_idx == rxvq->avail->idx))
@@ -334,15 +332,14 @@
{
// Get a header from the header array
- virtio_net_hdr_mrg_rxbuf_t *hdr =
- &vum->cpus[thread_index].tx_headers[tx_headers_len];
+ virtio_net_hdr_mrg_rxbuf_t *hdr = &cpu->tx_headers[tx_headers_len];
tx_headers_len++;
hdr->hdr.flags = 0;
hdr->hdr.gso_type = 0;
hdr->num_buffers = 1; //This is local, no need to check
// Prepare a copy order executed later for the header
- vhost_copy_t *cpy = &vum->cpus[thread_index].copy[copy_len];
+ vhost_copy_t *cpy = &cpu->copy[copy_len];
copy_len++;
cpy->len = vui->virtio_net_hdr_sz;
cpy->dst = buffer_map_addr;
@@ -367,7 +364,7 @@
else if (vui->virtio_net_hdr_sz == 12) //MRG is available
{
virtio_net_hdr_mrg_rxbuf_t *hdr =
- &vum->cpus[thread_index].tx_headers[tx_headers_len - 1];
+ &cpu->tx_headers[tx_headers_len - 1];
//Move from available to used buffer
rxvq->used->ring[rxvq->last_used_idx & rxvq->qsz_mask].id =
@@ -429,7 +426,7 @@
}
{
- vhost_copy_t *cpy = &vum->cpus[thread_index].copy[copy_len];
+ vhost_copy_t *cpy = &cpu->copy[copy_len];
copy_len++;
cpy->len = bytes_left;
cpy->len = (cpy->len > buffer_len) ? buffer_len : cpy->len;
@@ -472,21 +469,19 @@
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
- vum->cpus[thread_index].current_trace->hdr =
- vum->cpus[thread_index].tx_headers[tx_headers_len - 1];
+ cpu->current_trace->hdr = cpu->tx_headers[tx_headers_len - 1];
}
n_left--; //At the end for error counting when 'goto done' is invoked
/*
* Do the copy periodically to prevent
- * vum->cpus[thread_index].copy array overflow and corrupt memory
+ * cpu->copy array overflow and corrupt memory
*/
if (PREDICT_FALSE (copy_len >= VHOST_USER_TX_COPY_THRESHOLD))
{
- if (PREDICT_FALSE
- (vhost_user_tx_copy (vui, vum->cpus[thread_index].copy,
- copy_len, &map_hint)))
+ if (PREDICT_FALSE (vhost_user_tx_copy (vui, cpu->copy, copy_len,
+ &map_hint)))
{
vlib_error_count (vm, node->node_index,
VHOST_USER_TX_FUNC_ERROR_MMAP_FAIL, 1);
@@ -503,9 +498,8 @@
done:
//Do the memory copies
- if (PREDICT_FALSE
- (vhost_user_tx_copy (vui, vum->cpus[thread_index].copy,
- copy_len, &map_hint)))
+ if (PREDICT_FALSE (vhost_user_tx_copy (vui, cpu->copy, copy_len,
+ &map_hint)))
{
vlib_error_count (vm, node->node_index,
VHOST_USER_TX_FUNC_ERROR_MMAP_FAIL, 1);