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/*
* BSD LICENSE
*
* Copyright (C) Cavium, Inc. 2017. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Cavium, Inc nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <rte_atomic.h>
#include <rte_common.h>
#include <rte_ethdev.h>
#include <rte_ether.h>
#include <rte_log.h>
#include <rte_mbuf.h>
#include <rte_prefetch.h>
#include "octeontx_ethdev.h"
#include "octeontx_rxtx.h"
#include "octeontx_logs.h"
static __rte_always_inline uint16_t __hot
__octeontx_xmit_pkts(void *lmtline_va, void *ioreg_va, int64_t *fc_status_va,
struct rte_mbuf *tx_pkt)
{
uint64_t cmd_buf[4];
uint16_t gaura_id;
if (unlikely(*((volatile int64_t *)fc_status_va) < 0))
return -ENOSPC;
/* Get the gaura Id */
gaura_id = octeontx_fpa_bufpool_gpool((uintptr_t)tx_pkt->pool->pool_id);
/* Setup PKO_SEND_HDR_S */
cmd_buf[0] = tx_pkt->data_len & 0xffff;
cmd_buf[1] = 0x0;
/* Set don't free bit if reference count > 1 */
if (rte_mbuf_refcnt_read(tx_pkt) > 1)
cmd_buf[0] |= (1ULL << 58); /* SET DF */
/* Setup PKO_SEND_GATHER_S */
cmd_buf[(1 << 1) | 1] = rte_mbuf_data_iova(tx_pkt);
cmd_buf[(1 << 1) | 0] = PKO_SEND_GATHER_SUBDC |
PKO_SEND_GATHER_LDTYPE(0x1ull) |
PKO_SEND_GATHER_GAUAR((long)gaura_id) |
tx_pkt->data_len;
octeontx_reg_lmtst(lmtline_va, ioreg_va, cmd_buf, PKO_CMD_SZ);
return 0;
}
uint16_t __hot
octeontx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
{
int count;
struct octeontx_txq *txq = tx_queue;
octeontx_dq_t *dq = &txq->dq;
int res;
count = 0;
rte_io_wmb();
while (count < nb_pkts) {
res = __octeontx_xmit_pkts(dq->lmtline_va, dq->ioreg_va,
dq->fc_status_va,
tx_pkts[count]);
if (res < 0)
break;
count++;
}
return count; /* return number of pkts transmitted */
}
uint16_t __hot
octeontx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
{
struct octeontx_rxq *rxq;
struct rte_event ev;
size_t count;
uint16_t valid_event;
rxq = rx_queue;
count = 0;
while (count < nb_pkts) {
valid_event = rte_event_dequeue_burst(rxq->evdev,
rxq->ev_ports, &ev,
1, 0);
if (!valid_event)
break;
rx_pkts[count++] = ev.mbuf;
}
return count; /* return number of pkts received */
}
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