#define ETH_I40E_FLOATING_VEB_LIST_ARG "floating_veb_list"
#define ETH_I40E_SUPPORT_MULTI_DRIVER "support-multi-driver"
#define ETH_I40E_QUEUE_NUM_PER_VF_ARG "queue-num-per-vf"
+#define ETH_I40E_USE_LATEST_VEC "use-latest-supported-vec"
#define I40E_CLEAR_PXE_WAIT_MS 200
ETH_I40E_FLOATING_VEB_LIST_ARG,
ETH_I40E_SUPPORT_MULTI_DRIVER,
ETH_I40E_QUEUE_NUM_PER_VF_ARG,
+ ETH_I40E_USE_LATEST_VEC,
NULL};
static const struct rte_pci_id pci_id_i40e_map[] = {
return i40e_aq_debug_write_register(hw, reg_addr, reg_val, cmd_details);
}
+static int
+i40e_parse_latest_vec_handler(__rte_unused const char *key,
+ const char *value,
+ void *opaque)
+{
+ struct i40e_adapter *ad;
+ int use_latest_vec;
+
+ ad = (struct i40e_adapter *)opaque;
+
+ use_latest_vec = atoi(value);
+
+ if (use_latest_vec != 0 && use_latest_vec != 1)
+ PMD_DRV_LOG(WARNING, "Value should be 0 or 1, set it as 1!");
+
+ ad->use_latest_vec = (uint8_t)use_latest_vec;
+
+ return 0;
+}
+
+static int
+i40e_use_latest_vec(struct rte_eth_dev *dev)
+{
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ struct rte_kvargs *kvlist;
+ int kvargs_count;
+
+ ad->use_latest_vec = false;
+
+ if (!dev->device->devargs)
+ return 0;
+
+ kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys);
+ if (!kvlist)
+ return -EINVAL;
+
+ kvargs_count = rte_kvargs_count(kvlist, ETH_I40E_USE_LATEST_VEC);
+ if (!kvargs_count) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+
+ if (kvargs_count > 1)
+ PMD_DRV_LOG(WARNING, "More than one argument \"%s\" and only "
+ "the first invalid or last valid one is used !",
+ ETH_I40E_USE_LATEST_VEC);
+
+ if (rte_kvargs_process(kvlist, ETH_I40E_USE_LATEST_VEC,
+ i40e_parse_latest_vec_handler, ad) < 0) {
+ rte_kvargs_free(kvlist);
+ return -EINVAL;
+ }
+
+ rte_kvargs_free(kvlist);
+ return 0;
+}
+
#define I40E_ALARM_INTERVAL 50000 /* us */
static int
/* Check if need to support multi-driver */
i40e_support_multi_driver(dev);
+ /* Check if users want the latest supported vec path */
+ i40e_use_latest_vec(dev);
/* Make sure all is clean before doing PF reset */
i40e_clear_hw(hw);
ETH_I40E_FLOATING_VEB_ARG "=1"
ETH_I40E_FLOATING_VEB_LIST_ARG "=<string>"
ETH_I40E_QUEUE_NUM_PER_VF_ARG "=1|2|4|8|16"
- ETH_I40E_SUPPORT_MULTI_DRIVER "=1");
+ ETH_I40E_SUPPORT_MULTI_DRIVER "=1"
+ ETH_I40E_USE_LATEST_VEC "=0|1");
qinfo->conf.offloads = txq->offloads;
}
+static eth_rx_burst_t
+i40e_get_latest_rx_vec(bool scatter)
+{
+#ifdef RTE_ARCH_X86
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
+ return scatter ? i40e_recv_scattered_pkts_vec_avx2 :
+ i40e_recv_pkts_vec_avx2;
+#endif
+ return scatter ? i40e_recv_scattered_pkts_vec :
+ i40e_recv_pkts_vec;
+}
+
+static eth_rx_burst_t
+i40e_get_recommend_rx_vec(bool scatter)
+{
+#ifdef RTE_ARCH_X86
+ /*
+ * since AVX frequency can be different to base frequency, limit
+ * use of AVX2 version to later plaforms, not all those that could
+ * theoretically run it.
+ */
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
+ return scatter ? i40e_recv_scattered_pkts_vec_avx2 :
+ i40e_recv_pkts_vec_avx2;
+#endif
+ return scatter ? i40e_recv_scattered_pkts_vec :
+ i40e_recv_pkts_vec;
+}
+
void __attribute__((cold))
i40e_set_rx_function(struct rte_eth_dev *dev)
{
}
}
- if (dev->data->scattered_rx) {
- /* Set the non-LRO scattered callback: there are Vector and
- * single allocation versions.
- */
- if (ad->rx_vec_allowed) {
- PMD_INIT_LOG(DEBUG, "Using Vector Scattered Rx "
- "callback (port=%d).",
- dev->data->port_id);
-
- dev->rx_pkt_burst = i40e_recv_scattered_pkts_vec;
-#ifdef RTE_ARCH_X86
- /*
- * since AVX frequency can be different to base
- * frequency, limit use of AVX2 version to later
- * plaforms, not all those that could theoretically
- * run it.
- */
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
- dev->rx_pkt_burst =
- i40e_recv_scattered_pkts_vec_avx2;
-#endif
- } else {
- PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk "
- "allocation callback (port=%d).",
- dev->data->port_id);
- dev->rx_pkt_burst = i40e_recv_scattered_pkts;
- }
- /* If parameters allow we are going to choose between the following
- * callbacks:
- * - Vector
- * - Bulk Allocation
- * - Single buffer allocation (the simplest one)
- */
- } else if (ad->rx_vec_allowed) {
- PMD_INIT_LOG(DEBUG, "Vector rx enabled, please make sure RX "
- "burst size no less than %d (port=%d).",
- RTE_I40E_DESCS_PER_LOOP,
- dev->data->port_id);
-
- dev->rx_pkt_burst = i40e_recv_pkts_vec;
-#ifdef RTE_ARCH_X86
- /*
- * since AVX frequency can be different to base
- * frequency, limit use of AVX2 version to later
- * plaforms, not all those that could theoretically
- * run it.
- */
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
- dev->rx_pkt_burst = i40e_recv_pkts_vec_avx2;
-#endif
- } else if (ad->rx_bulk_alloc_allowed) {
+ if (ad->rx_vec_allowed) {
+ /* Vec Rx path */
+ PMD_INIT_LOG(DEBUG, "Vector Rx path will be used on port=%d.",
+ dev->data->port_id);
+ if (ad->use_latest_vec)
+ dev->rx_pkt_burst =
+ i40e_get_latest_rx_vec(dev->data->scattered_rx);
+ else
+ dev->rx_pkt_burst =
+ i40e_get_recommend_rx_vec(dev->data->scattered_rx);
+ } else if (!dev->data->scattered_rx && ad->rx_bulk_alloc_allowed) {
PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
"satisfied. Rx Burst Bulk Alloc function "
"will be used on port=%d.",
dev->rx_pkt_burst = i40e_recv_pkts_bulk_alloc;
} else {
- PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are not "
- "satisfied, or Scattered Rx is requested "
- "(port=%d).",
+ /* Simple Rx Path. */
+ PMD_INIT_LOG(DEBUG, "Simple Rx path will be used on port=%d.",
dev->data->port_id);
-
- dev->rx_pkt_burst = i40e_recv_pkts;
+ dev->rx_pkt_burst = dev->data->scattered_rx ?
+ i40e_recv_scattered_pkts :
+ i40e_recv_pkts;
}
/* Propagate information about RX function choice through all queues. */
txq->queue_id);
}
+static eth_tx_burst_t
+i40e_get_latest_tx_vec(void)
+{
+#ifdef RTE_ARCH_X86
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
+ return i40e_xmit_pkts_vec_avx2;
+#endif
+ return i40e_xmit_pkts_vec;
+}
+
+static eth_tx_burst_t
+i40e_get_recommend_tx_vec(void)
+{
+#ifdef RTE_ARCH_X86
+ /*
+ * since AVX frequency can be different to base frequency, limit
+ * use of AVX2 version to later plaforms, not all those that could
+ * theoretically run it.
+ */
+ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
+ return i40e_xmit_pkts_vec_avx2;
+#endif
+ return i40e_xmit_pkts_vec;
+}
+
void __attribute__((cold))
i40e_set_tx_function(struct rte_eth_dev *dev)
{
if (ad->tx_simple_allowed) {
if (ad->tx_vec_allowed) {
PMD_INIT_LOG(DEBUG, "Vector tx finally be used.");
- dev->tx_pkt_burst = i40e_xmit_pkts_vec;
-#ifdef RTE_ARCH_X86
- /*
- * since AVX frequency can be different to base
- * frequency, limit use of AVX2 version to later
- * plaforms, not all those that could theoretically
- * run it.
- */
- if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
- dev->tx_pkt_burst = i40e_xmit_pkts_vec_avx2;
-#endif
+ if (ad->use_latest_vec)
+ dev->tx_pkt_burst =
+ i40e_get_latest_tx_vec();
+ else
+ dev->tx_pkt_burst =
+ i40e_get_recommend_tx_vec();
} else {
PMD_INIT_LOG(DEBUG, "Simple tx finally be used.");
dev->tx_pkt_burst = i40e_xmit_pkts_simple;
git.droids-corp.org / dpdk.git / commitdiff