numam-dpdk/drivers/net/ice/ice_rxtx_vec_common.h
Qi Zhang 3b4888d53d net/ice: add flow mark hint
Since not all data paths support flow mark, the driver needs
a hint from application to select the correct data path if
flow mark is required. The patch introduces a devarg
"flow-mark-support" as a workaround solution, since a standard
way is still ongoing.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>
2019-11-20 17:36:06 +01:00

303 lines
7.0 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2019 Intel Corporation
*/
#ifndef _ICE_RXTX_VEC_COMMON_H_
#define _ICE_RXTX_VEC_COMMON_H_
#include "ice_rxtx.h"
static inline uint16_t
ice_rx_reassemble_packets(struct ice_rx_queue *rxq, struct rte_mbuf **rx_bufs,
uint16_t nb_bufs, uint8_t *split_flags)
{
struct rte_mbuf *pkts[ICE_VPMD_RX_BURST] = {0}; /*finished pkts*/
struct rte_mbuf *start = rxq->pkt_first_seg;
struct rte_mbuf *end = rxq->pkt_last_seg;
unsigned int pkt_idx, buf_idx;
for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
if (end) {
/* processing a split packet */
end->next = rx_bufs[buf_idx];
rx_bufs[buf_idx]->data_len += rxq->crc_len;
start->nb_segs++;
start->pkt_len += rx_bufs[buf_idx]->data_len;
end = end->next;
if (!split_flags[buf_idx]) {
/* it's the last packet of the set */
start->hash = end->hash;
start->ol_flags = end->ol_flags;
/* we need to strip crc for the whole packet */
start->pkt_len -= rxq->crc_len;
if (end->data_len > rxq->crc_len) {
end->data_len -= rxq->crc_len;
} else {
/* free up last mbuf */
struct rte_mbuf *secondlast = start;
start->nb_segs--;
while (secondlast->next != end)
secondlast = secondlast->next;
secondlast->data_len -= (rxq->crc_len -
end->data_len);
secondlast->next = NULL;
rte_pktmbuf_free_seg(end);
}
pkts[pkt_idx++] = start;
start = NULL;
end = NULL;
}
} else {
/* not processing a split packet */
if (!split_flags[buf_idx]) {
/* not a split packet, save and skip */
pkts[pkt_idx++] = rx_bufs[buf_idx];
continue;
}
start = rx_bufs[buf_idx];
end = start;
rx_bufs[buf_idx]->data_len += rxq->crc_len;
rx_bufs[buf_idx]->pkt_len += rxq->crc_len;
}
}
/* save the partial packet for next time */
rxq->pkt_first_seg = start;
rxq->pkt_last_seg = end;
rte_memcpy(rx_bufs, pkts, pkt_idx * (sizeof(*pkts)));
return pkt_idx;
}
static __rte_always_inline int
ice_tx_free_bufs(struct ice_tx_queue *txq)
{
struct ice_tx_entry *txep;
uint32_t n;
uint32_t i;
int nb_free = 0;
struct rte_mbuf *m, *free[ICE_TX_MAX_FREE_BUF_SZ];
/* check DD bits on threshold descriptor */
if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
rte_cpu_to_le_64(ICE_TXD_QW1_DTYPE_M)) !=
rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DESC_DONE))
return 0;
n = txq->tx_rs_thresh;
/* first buffer to free from S/W ring is at index
* tx_next_dd - (tx_rs_thresh-1)
*/
txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)];
m = rte_pktmbuf_prefree_seg(txep[0].mbuf);
if (likely(m)) {
free[0] = m;
nb_free = 1;
for (i = 1; i < n; i++) {
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
if (likely(m)) {
if (likely(m->pool == free[0]->pool)) {
free[nb_free++] = m;
} else {
rte_mempool_put_bulk(free[0]->pool,
(void *)free,
nb_free);
free[0] = m;
nb_free = 1;
}
}
}
rte_mempool_put_bulk(free[0]->pool, (void **)free, nb_free);
} else {
for (i = 1; i < n; i++) {
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
if (m)
rte_mempool_put(m->pool, m);
}
}
/* buffers were freed, update counters */
txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
if (txq->tx_next_dd >= txq->nb_tx_desc)
txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
return txq->tx_rs_thresh;
}
static __rte_always_inline void
ice_tx_backlog_entry(struct ice_tx_entry *txep,
struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
{
int i;
for (i = 0; i < (int)nb_pkts; ++i)
txep[i].mbuf = tx_pkts[i];
}
static inline void
_ice_rx_queue_release_mbufs_vec(struct ice_rx_queue *rxq)
{
const unsigned int mask = rxq->nb_rx_desc - 1;
unsigned int i;
if (unlikely(!rxq->sw_ring)) {
PMD_DRV_LOG(DEBUG, "sw_ring is NULL");
return;
}
if (rxq->rxrearm_nb >= rxq->nb_rx_desc)
return;
/* free all mbufs that are valid in the ring */
if (rxq->rxrearm_nb == 0) {
for (i = 0; i < rxq->nb_rx_desc; i++) {
if (rxq->sw_ring[i].mbuf)
rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
}
} else {
for (i = rxq->rx_tail;
i != rxq->rxrearm_start;
i = (i + 1) & mask) {
if (rxq->sw_ring[i].mbuf)
rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf);
}
}
rxq->rxrearm_nb = rxq->nb_rx_desc;
/* set all entries to NULL */
memset(rxq->sw_ring, 0, sizeof(rxq->sw_ring[0]) * rxq->nb_rx_desc);
}
static inline void
_ice_tx_queue_release_mbufs_vec(struct ice_tx_queue *txq)
{
uint16_t i;
if (unlikely(!txq || !txq->sw_ring)) {
PMD_DRV_LOG(DEBUG, "Pointer to rxq or sw_ring is NULL");
return;
}
/**
* vPMD tx will not set sw_ring's mbuf to NULL after free,
* so need to free remains more carefully.
*/
i = txq->tx_next_dd - txq->tx_rs_thresh + 1;
if (txq->tx_tail < i) {
for (; i < txq->nb_tx_desc; i++) {
rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
txq->sw_ring[i].mbuf = NULL;
}
i = 0;
}
for (; i < txq->tx_tail; i++) {
rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf);
txq->sw_ring[i].mbuf = NULL;
}
}
static inline int
ice_rxq_vec_setup_default(struct ice_rx_queue *rxq)
{
uintptr_t p;
struct rte_mbuf mb_def = { .buf_addr = 0 }; /* zeroed mbuf */
mb_def.nb_segs = 1;
mb_def.data_off = RTE_PKTMBUF_HEADROOM;
mb_def.port = rxq->port_id;
rte_mbuf_refcnt_set(&mb_def, 1);
/* prevent compiler reordering: rearm_data covers previous fields */
rte_compiler_barrier();
p = (uintptr_t)&mb_def.rearm_data;
rxq->mbuf_initializer = *(uint64_t *)p;
return 0;
}
static inline int
ice_rx_vec_queue_default(struct ice_rx_queue *rxq)
{
if (!rxq)
return -1;
if (!rte_is_power_of_2(rxq->nb_rx_desc))
return -1;
if (rxq->rx_free_thresh < ICE_VPMD_RX_BURST)
return -1;
if (rxq->nb_rx_desc % rxq->rx_free_thresh)
return -1;
if (rxq->proto_xtr != PROTO_XTR_NONE)
return -1;
return 0;
}
#define ICE_NO_VECTOR_FLAGS ( \
DEV_TX_OFFLOAD_MULTI_SEGS | \
DEV_TX_OFFLOAD_VLAN_INSERT | \
DEV_TX_OFFLOAD_SCTP_CKSUM | \
DEV_TX_OFFLOAD_UDP_CKSUM | \
DEV_TX_OFFLOAD_TCP_CKSUM)
static inline int
ice_tx_vec_queue_default(struct ice_tx_queue *txq)
{
if (!txq)
return -1;
if (txq->offloads & ICE_NO_VECTOR_FLAGS)
return -1;
if (txq->tx_rs_thresh < ICE_VPMD_TX_BURST ||
txq->tx_rs_thresh > ICE_TX_MAX_FREE_BUF_SZ)
return -1;
return 0;
}
static inline int
ice_rx_vec_dev_check_default(struct rte_eth_dev *dev)
{
int i;
struct ice_rx_queue *rxq;
struct ice_adapter *ad =
ICE_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
/* vPMD does not support flow mark. */
if (ad->devargs.flow_mark_support)
return -1;
for (i = 0; i < dev->data->nb_rx_queues; i++) {
rxq = dev->data->rx_queues[i];
if (ice_rx_vec_queue_default(rxq))
return -1;
}
return 0;
}
static inline int
ice_tx_vec_dev_check_default(struct rte_eth_dev *dev)
{
int i;
struct ice_tx_queue *txq;
for (i = 0; i < dev->data->nb_tx_queues; i++) {
txq = dev->data->tx_queues[i];
if (ice_tx_vec_queue_default(txq))
return -1;
}
return 0;
}
#endif