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memif: remove duplicate code in tx

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Type: refactor
Change-Id: Idb82e28ee2e370ae8fc1becc2f8b92a548bc6b1b
Signed-off-by: Damjan Marion <damarion@cisco.com>
This commit is contained in:
Damjan Marion
2021-05-15 01:38:18 +02:00
committed by Florin Coras
parent d78ba5aa01
commit bdef1281c8
1 changed files with 39 additions and 53 deletions
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92
src/plugins/memif/device.c
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@ -97,14 +97,12 @@ memif_add_copy_op (memif_per_thread_data_t * ptd, void *data, u32 len,
}
static_always_inline uword
memif_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, memif_if_t * mif,
memif_ring_type_t type, memif_queue_t * mq,
memif_per_thread_data_t * ptd)
memif_interface_tx_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
u32 *buffers, memif_if_t *mif,
memif_ring_type_t type, memif_queue_t *mq,
memif_per_thread_data_t *ptd, u32 n_left)
{
memif_ring_t *ring;
u32 *buffers = vlib_frame_vector_args (frame);
u32 n_left = frame->n_vectors;
u32 n_copy_op;
u16 ring_size, mask, slot, free_slots;
int n_retries = 5;
@ -278,35 +276,15 @@ no_free_slots:
if (n_left && n_retries--)
goto retry;
clib_spinlock_unlock_if_init (&mif->lockp);
if (n_left)
{
vlib_error_count (vm, node->node_index, MEMIF_TX_ERROR_NO_FREE_SLOTS,
n_left);
}
if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0 && mq->int_fd > -1)
{
u64 b = 1;
CLIB_UNUSED (int r) = write (mq->int_fd, &b, sizeof (b));
mq->int_count++;
}
vlib_buffer_free (vm, vlib_frame_vector_args (frame), frame->n_vectors);
return frame->n_vectors;
return n_left;
}
static_always_inline uword
memif_interface_tx_zc_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, memif_if_t * mif,
memif_queue_t * mq,
memif_per_thread_data_t * ptd)
memif_interface_tx_zc_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
u32 *buffers, memif_if_t *mif, memif_queue_t *mq,
memif_per_thread_data_t *ptd, u32 n_left)
{
memif_ring_t *ring = mq->ring;
u32 *buffers = vlib_frame_vector_args (frame);
u32 n_left = frame->n_vectors;
u16 slot, free_slots, n_free;
u16 ring_size = 1 << mq->log2_ring_size;
u16 mask = ring_size - 1;
@ -389,23 +367,7 @@ no_free_slots:
if (n_left && n_retries--)
goto retry;
clib_spinlock_unlock_if_init (&mif->lockp);
if (n_left)
{
vlib_error_count (vm, node->node_index, MEMIF_TX_ERROR_NO_FREE_SLOTS,
n_left);
vlib_buffer_free (vm, buffers, n_left);
}
if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0 && mq->int_fd > -1)
{
u64 b = 1;
CLIB_UNUSED (int r) = write (mq->int_fd, &b, sizeof (b));
mq->int_count++;
}
return frame->n_vectors;
return n_left;
}
VNET_DEVICE_CLASS_TX_FN (memif_device_class) (vlib_main_t * vm,
@ -416,10 +378,11 @@ VNET_DEVICE_CLASS_TX_FN (memif_device_class) (vlib_main_t * vm,
vnet_interface_output_runtime_t *rund = (void *) node->runtime_data;
memif_if_t *mif = pool_elt_at_index (nm->interfaces, rund->dev_instance);
memif_queue_t *mq;
u32 thread_index = vm->thread_index;
u32 *from, thread_index = vm->thread_index;
memif_per_thread_data_t *ptd = vec_elt_at_index (memif_main.per_thread_data,
thread_index);
u8 tx_queues = vec_len (mif->tx_queues);
uword n_left;
if (tx_queues < vlib_get_n_threads ())
{
@ -430,14 +393,37 @@ VNET_DEVICE_CLASS_TX_FN (memif_device_class) (vlib_main_t * vm,
else
mq = vec_elt_at_index (mif->tx_queues, thread_index);
from = vlib_frame_vector_args (frame);
n_left = frame->n_vectors;
if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
return memif_interface_tx_zc_inline (vm, node, frame, mif, mq, ptd);
n_left =
memif_interface_tx_zc_inline (vm, node, from, mif, mq, ptd, n_left);
else if (mif->flags & MEMIF_IF_FLAG_IS_SLAVE)
return memif_interface_tx_inline (vm, node, frame, mif, MEMIF_RING_S2M,
mq, ptd);
n_left = memif_interface_tx_inline (vm, node, from, mif, MEMIF_RING_S2M,
mq, ptd, n_left);
else
return memif_interface_tx_inline (vm, node, frame, mif, MEMIF_RING_M2S,
mq, ptd);
n_left = memif_interface_tx_inline (vm, node, from, mif, MEMIF_RING_M2S,
mq, ptd, n_left);
clib_spinlock_unlock_if_init (&mif->lockp);
if (n_left)
vlib_error_count (vm, node->node_index, MEMIF_TX_ERROR_NO_FREE_SLOTS,
n_left);
if ((mq->ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0 && mq->int_fd > -1)
{
u64 b = 1;
int __clib_unused r = write (mq->int_fd, &b, sizeof (b));
mq->int_count++;
}
if ((mif->flags & MEMIF_IF_FLAG_ZERO_COPY) == 0)
vlib_buffer_free (vm, from, frame->n_vectors);
else if (n_left)
vlib_buffer_free (vm, from + frame->n_vectors - n_left, n_left);
return frame->n_vectors - n_left;
}
static void