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/* SPDX-License-Identifier: Apache-2.0
* Copyright (c) 2024 Cisco Systems, Inc.
*/
#include <vlib/vlib.h>
#include <vnet/dev/dev.h>
#include <vnet/ethernet/ethernet.h>
#include <dev_armada/pp2/pp2.h>
static_always_inline void
mvpp2_rx_trace (vlib_main_t *vm, vlib_node_runtime_t *node,
vnet_dev_rx_queue_t *rxq, vlib_buffer_t *b0, uword *n_trace,
struct pp2_ppio_desc *d)
{
if (PREDICT_TRUE (vlib_trace_buffer (vm, node, rxq->next_index, b0,
/* follow_chain */ 0)))
{
mvpp2_rx_trace_t *tr;
vlib_set_trace_count (vm, node, --(*n_trace));
tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->desc = *d;
tr->rxq = rxq;
}
}
static_always_inline uword
mrvl_pp2_rx_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, vnet_dev_rx_queue_t *rxq)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_dev_port_t *port = rxq->port;
vnet_dev_t *dev = port->dev;
mvpp2_device_t *md = vnet_dev_get_data (dev);
mvpp2_port_t *mp = vnet_dev_get_port_data (port);
vlib_buffer_template_t bt = rxq->buffer_template;
u32 thread_index = vm->thread_index;
uword n_trace = vlib_get_trace_count (vm, node);
u32 next_index = rxq->next_index;
u32 n_rx_packets = 0, n_rx_bytes = 0;
struct pp2_hif *hif = md->hif[thread_index];
struct pp2_ppio_desc descs[VLIB_FRAME_SIZE], *d;
struct pp2_bpool *bpool = md->thread[thread_index].bpool;
struct buff_release_entry *bre = md->thread[thread_index].bre;
u16 n_desc = VLIB_FRAME_SIZE;
u32 buffers[VLIB_FRAME_SIZE];
u32 n_bufs, *bi, i;
vlib_buffer_t *b0, *b1;
if (PREDICT_FALSE (
pp2_ppio_recv (mp->ppio, 0, rxq->queue_id, descs, &n_desc)))
{
vlib_error_count (vm, node->node_index, MVPP2_RX_NODE_CTR_PPIO_RECV, 1);
n_desc = 0;
}
n_rx_packets = n_desc;
for (i = 0; i < n_desc; i++)
buffers[i] = pp2_ppio_inq_desc_get_cookie (descs + i);
bt.current_data = 2;
for (d = descs, bi = buffers; n_desc >= 4; d += 2, bi += 2, n_desc -= 2)
{
/* prefetch */
b0 = vlib_get_buffer (vm, bi[0]);
b1 = vlib_get_buffer (vm, bi[1]);
b0->template = bt;
b1->template = bt;
n_rx_bytes += b0->current_length = pp2_ppio_inq_desc_get_pkt_len (d);
n_rx_bytes += b1->current_length = pp2_ppio_inq_desc_get_pkt_len (d + 1);
if (PREDICT_FALSE (n_trace > 0))
{
mvpp2_rx_trace (vm, node, rxq, b0, &n_trace, d);
if (n_trace > 0)
mvpp2_rx_trace (vm, node, rxq, b1, &n_trace, d + 1);
}
}
for (; n_desc; d++, bi++, n_desc--)
{
b0 = vlib_get_buffer (vm, bi[0]);
b0->template = bt;
n_rx_bytes += b0->current_length = pp2_ppio_inq_desc_get_pkt_len (d);
if (PREDICT_FALSE (n_trace > 0))
mvpp2_rx_trace (vm, node, rxq, b0, &n_trace, d);
}
vlib_buffer_enqueue_to_single_next (vm, node, buffers, next_index,
n_rx_packets);
vlib_increment_combined_counter (
vnm->interface_main.combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
thread_index, port->intf.sw_if_index, n_rx_packets, n_rx_bytes);
if (PREDICT_FALSE (pp2_bpool_get_num_buffs (bpool, &n_bufs)))
{
vlib_error_count (vm, node->node_index,
MVPP2_RX_NODE_CTR_BPOOL_GET_NUM_BUFFS, 1);
goto done;
}
n_bufs = rxq->size - n_bufs;
while (n_bufs >= MRVL_PP2_BUFF_BATCH_SZ)
{
u16 n_alloc, i;
struct buff_release_entry *e = bre;
n_alloc = vlib_buffer_alloc (vm, buffers, MRVL_PP2_BUFF_BATCH_SZ);
i = n_alloc;
if (PREDICT_FALSE (n_alloc == 0))
{
vlib_error_count (vm, node->node_index,
MVPP2_RX_NODE_CTR_BUFFER_ALLOC, 1);
goto done;
}
for (bi = buffers; i--; e++, bi++)
{
vlib_buffer_t *b = vlib_get_buffer (vm, bi[0]);
e->buff.addr = vlib_buffer_get_pa (vm, b) - 64;
e->buff.cookie = bi[0];
}
i = n_alloc;
if (PREDICT_FALSE (pp2_bpool_put_buffs (hif, bre, &i)))
{
vlib_error_count (vm, node->node_index,
MVPP2_RX_NODE_CTR_BPOOL_PUT_BUFFS, 1);
vlib_buffer_free (vm, buffers, n_alloc);
goto done;
}
if (PREDICT_FALSE (i != n_alloc))
vlib_buffer_free (vm, buffers + i, n_alloc - i);
n_bufs -= i;
}
done:
return n_rx_packets;
}
VNET_DEV_NODE_FN (mvpp2_rx_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
u32 n_rx = 0;
foreach_vnet_dev_rx_queue_runtime (rxq, node)
n_rx += mrvl_pp2_rx_inline (vm, node, frame, rxq);
return n_rx;
}
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