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authorZhe Tao <zhe.tao@intel.com>2015-10-30 22:16:38 +0800
committerThomas Monjalon <thomas.monjalon@6wind.com>2015-10-30 17:00:37 +0100
commit8e109464c02292cbfd1614750035c6a756133751 (patch)
tree70eb7f84439003981c0a2e89de900bd8266f4861
parent0e0da28cd888b06b38d316cc0df279eb36dcf693 (diff)
downloaddpdk-8e109464c022.zip
dpdk-8e109464c022.tar.gz
dpdk-8e109464c022.tar.xz
i40e: allow vector Rx and Tx usage
To support FVL PMD can select which RX and TX function should be used according to the queue config. Signed-off-by: Zhe Tao <zhe.tao@intel.com> Acked-by: Cunming Liang <cunming.liang@intel.com>
-rw-r--r--doc/guides/rel_notes/release_2_2.rst2
-rw-r--r--drivers/net/i40e/i40e_ethdev.c20
-rw-r--r--drivers/net/i40e/i40e_ethdev.h6
-rw-r--r--drivers/net/i40e/i40e_ethdev_vf.c28
-rw-r--r--drivers/net/i40e/i40e_rxtx.c182
-rw-r--r--drivers/net/i40e/i40e_rxtx.h6
-rw-r--r--drivers/net/i40e/i40e_rxtx_vec.c32
7 files changed, 256 insertions, 20 deletions
diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst
index 01f69de..0c0d2ff 100644
--- a/doc/guides/rel_notes/release_2_2.rst
+++ b/doc/guides/rel_notes/release_2_2.rst
@@ -18,6 +18,8 @@ New Features
* Add 2 new flow director modes on x550.
* One is MAC VLAN mode, the other is tunnel mode.
+* **Added i40e vector RX/TX.**
+
* **Added i40e flow control support.**
* **Added fm10k TSO support for both PF and VF.**
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 497fee7..016838a 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -451,8 +451,8 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
* has already done this work. Only check we don't need a different
* RX function */
if (rte_eal_process_type() != RTE_PROC_PRIMARY){
- if (dev->data->scattered_rx)
- dev->rx_pkt_burst = i40e_recv_scattered_pkts;
+ i40e_set_rx_function(dev);
+ i40e_set_tx_function(dev);
return 0;
}
pci_dev = dev->pci_dev;
@@ -724,10 +724,20 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
static int
i40e_dev_configure(struct rte_eth_dev *dev)
{
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
enum rte_eth_rx_mq_mode mq_mode = dev->data->dev_conf.rxmode.mq_mode;
int ret;
+ /* Initialize to TRUE. If any of Rx queues doesn't meet the
+ * bulk allocation or vector Rx preconditions we will reset it.
+ */
+ ad->rx_bulk_alloc_allowed = true;
+ ad->rx_vec_allowed = true;
+ ad->tx_simple_allowed = true;
+ ad->tx_vec_allowed = true;
+
if (dev->data->dev_conf.fdir_conf.mode == RTE_FDIR_MODE_PERFECT) {
ret = i40e_fdir_setup(pf);
if (ret != I40E_SUCCESS) {
@@ -3901,6 +3911,9 @@ i40e_dev_tx_init(struct i40e_pf *pf)
if (ret != I40E_SUCCESS)
break;
}
+ if (ret == I40E_SUCCESS)
+ i40e_set_tx_function(container_of(pf, struct i40e_adapter, pf)
+ ->eth_dev);
return ret;
}
@@ -3927,6 +3940,9 @@ i40e_dev_rx_init(struct i40e_pf *pf)
break;
}
}
+ if (ret == I40E_SUCCESS)
+ i40e_set_rx_function(container_of(pf, struct i40e_adapter, pf)
+ ->eth_dev);
return ret;
}
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 70804e1..832c036 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -479,6 +479,12 @@ struct i40e_adapter {
struct i40e_pf pf;
struct i40e_vf vf;
};
+
+ /* for vector PMD */
+ bool rx_bulk_alloc_allowed;
+ bool rx_vec_allowed;
+ bool tx_simple_allowed;
+ bool tx_vec_allowed;
};
int i40e_dev_switch_queues(struct i40e_pf *pf, bool on);
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 1324281..48b904e 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1197,8 +1197,8 @@ i40evf_dev_init(struct rte_eth_dev *eth_dev)
* has already done this work.
*/
if (rte_eal_process_type() != RTE_PROC_PRIMARY){
- if (eth_dev->data->scattered_rx)
- eth_dev->rx_pkt_burst = i40e_recv_scattered_pkts;
+ i40e_set_rx_function(eth_dev);
+ i40e_set_tx_function(eth_dev);
return 0;
}
@@ -1292,6 +1292,17 @@ PMD_REGISTER_DRIVER(rte_i40evf_driver);
static int
i40evf_dev_configure(struct rte_eth_dev *dev)
{
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+
+ /* Initialize to TRUE. If any of Rx queues doesn't meet the bulk
+ * allocation or vector Rx preconditions we will reset it.
+ */
+ ad->rx_bulk_alloc_allowed = true;
+ ad->rx_vec_allowed = true;
+ ad->tx_simple_allowed = true;
+ ad->tx_vec_allowed = true;
+
return i40evf_init_vlan(dev);
}
@@ -1523,7 +1534,6 @@ i40evf_rxq_init(struct rte_eth_dev *dev, struct i40e_rx_queue *rxq)
if (dev_data->dev_conf.rxmode.enable_scatter ||
(rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size) {
dev_data->scattered_rx = 1;
- dev->rx_pkt_burst = i40e_recv_scattered_pkts;
}
return 0;
@@ -1534,6 +1544,7 @@ i40evf_rx_init(struct rte_eth_dev *dev)
{
struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
uint16_t i;
+ int ret = I40E_SUCCESS;
struct i40e_rx_queue **rxq =
(struct i40e_rx_queue **)dev->data->rx_queues;
@@ -1541,11 +1552,14 @@ i40evf_rx_init(struct rte_eth_dev *dev)
for (i = 0; i < dev->data->nb_rx_queues; i++) {
if (!rxq[i] || !rxq[i]->q_set)
continue;
- if (i40evf_rxq_init(dev, rxq[i]) < 0)
- return -EFAULT;
+ ret = i40evf_rxq_init(dev, rxq[i]);
+ if (ret != I40E_SUCCESS)
+ break;
}
+ if (ret == I40E_SUCCESS)
+ i40e_set_rx_function(dev);
- return 0;
+ return ret;
}
static void
@@ -1558,6 +1572,8 @@ i40evf_tx_init(struct rte_eth_dev *dev)
for (i = 0; i < dev->data->nb_tx_queues; i++)
txq[i]->qtx_tail = hw->hw_addr + I40E_QTX_TAIL1(i);
+
+ i40e_set_tx_function(dev);
}
static inline void
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index d37cbde..8731712 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -2105,6 +2105,8 @@ i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
struct i40e_vsi *vsi;
struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
struct i40e_rx_queue *rxq;
const struct rte_memzone *rz;
uint32_t ring_size;
@@ -2213,13 +2215,12 @@ i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
use_def_burst_func = check_rx_burst_bulk_alloc_preconditions(rxq);
- if (!use_def_burst_func && !dev->data->scattered_rx) {
+ if (!use_def_burst_func) {
#ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
"satisfied. Rx Burst Bulk Alloc function will be "
"used on port=%d, queue=%d.",
rxq->port_id, rxq->queue_id);
- dev->rx_pkt_burst = i40e_recv_pkts_bulk_alloc;
#endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
} else {
PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
@@ -2227,6 +2228,7 @@ i40e_dev_rx_queue_setup(struct rte_eth_dev *dev,
"or RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC is "
"not enabled on port=%d, queue=%d.",
rxq->port_id, rxq->queue_id);
+ ad->rx_bulk_alloc_allowed = false;
}
return 0;
@@ -2488,14 +2490,7 @@ i40e_dev_tx_queue_setup(struct rte_eth_dev *dev,
dev->data->tx_queues[queue_idx] = txq;
/* Use a simple TX queue without offloads or multi segs if possible */
- if (((txq->txq_flags & I40E_SIMPLE_FLAGS) == I40E_SIMPLE_FLAGS) &&
- (txq->tx_rs_thresh >= I40E_TX_MAX_BURST)) {
- PMD_INIT_LOG(INFO, "Using simple tx path");
- dev->tx_pkt_burst = i40e_xmit_pkts_simple;
- } else {
- PMD_INIT_LOG(INFO, "Using full-featured tx path");
- dev->tx_pkt_burst = i40e_xmit_pkts;
- }
+ i40e_set_tx_function_flag(dev, txq);
return 0;
}
@@ -2564,6 +2559,12 @@ i40e_rx_queue_release_mbufs(struct i40e_rx_queue *rxq)
{
uint16_t i;
+ /* SSE Vector driver has a different way of releasing mbufs. */
+ if (rxq->rx_using_sse) {
+ i40e_rx_queue_release_mbufs_vec(rxq);
+ return;
+ }
+
if (!rxq || !rxq->sw_ring) {
PMD_DRV_LOG(DEBUG, "Pointer to rxq or sw_ring is NULL");
return;
@@ -2837,7 +2838,6 @@ i40e_rx_queue_init(struct i40e_rx_queue *rxq)
int err = I40E_SUCCESS;
struct i40e_hw *hw = I40E_VSI_TO_HW(rxq->vsi);
struct rte_eth_dev_data *dev_data = I40E_VSI_TO_DEV_DATA(rxq->vsi);
- struct rte_eth_dev *dev = I40E_VSI_TO_ETH_DEV(rxq->vsi);
uint16_t pf_q = rxq->reg_idx;
uint16_t buf_size;
struct i40e_hmc_obj_rxq rx_ctx;
@@ -2893,7 +2893,6 @@ i40e_rx_queue_init(struct i40e_rx_queue *rxq)
/* Check if scattered RX needs to be used. */
if ((rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size) {
dev_data->scattered_rx = 1;
- dev->rx_pkt_burst = i40e_recv_scattered_pkts;
}
/* Init the RX tail regieter. */
@@ -3064,7 +3063,159 @@ i40e_fdir_setup_rx_resources(struct i40e_pf *pf)
return I40E_SUCCESS;
}
+void __attribute__((cold))
+i40e_set_rx_function(struct rte_eth_dev *dev)
+{
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ uint16_t rx_using_sse, i;
+ /* In order to allow Vector Rx there are a few configuration
+ * conditions to be met and Rx Bulk Allocation should be allowed.
+ */
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ if (i40e_rx_vec_dev_conf_condition_check(dev) ||
+ !ad->rx_bulk_alloc_allowed) {
+ PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet"
+ " Vector Rx preconditions",
+ dev->data->port_id);
+
+ ad->rx_vec_allowed = false;
+ }
+ if (ad->rx_vec_allowed) {
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ struct i40e_rx_queue *rxq =
+ dev->data->rx_queues[i];
+
+ if (i40e_rxq_vec_setup(rxq)) {
+ ad->rx_vec_allowed = false;
+ break;
+ }
+ }
+ }
+ }
+
+ 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;
+ } 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;
+ } else if (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->data->port_id);
+
+ 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).",
+ dev->data->port_id);
+
+ dev->rx_pkt_burst = i40e_recv_pkts;
+ }
+
+ /* Propagate information about RX function choice through all queues. */
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ rx_using_sse =
+ (dev->rx_pkt_burst == i40e_recv_scattered_pkts_vec ||
+ dev->rx_pkt_burst == i40e_recv_pkts_vec);
+
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ struct i40e_rx_queue *rxq = dev->data->rx_queues[i];
+
+ rxq->rx_using_sse = rx_using_sse;
+ }
+ }
+}
+
+void __attribute__((cold))
+i40e_set_tx_function_flag(struct rte_eth_dev *dev, struct i40e_tx_queue *txq)
+{
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+
+ /* Use a simple Tx queue (no offloads, no multi segs) if possible */
+ if (((txq->txq_flags & I40E_SIMPLE_FLAGS) == I40E_SIMPLE_FLAGS)
+ && (txq->tx_rs_thresh >= RTE_PMD_I40E_TX_MAX_BURST)) {
+ if (txq->tx_rs_thresh <= RTE_I40E_TX_MAX_FREE_BUF_SZ) {
+ PMD_INIT_LOG(DEBUG, "Vector tx"
+ " can be enabled on this txq.");
+
+ } else {
+ ad->tx_vec_allowed = false;
+ }
+ } else {
+ ad->tx_simple_allowed = false;
+ }
+}
+
+void __attribute__((cold))
+i40e_set_tx_function(struct rte_eth_dev *dev)
+{
+ struct i40e_adapter *ad =
+ I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ int i;
+
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ if (ad->tx_vec_allowed) {
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ struct i40e_tx_queue *txq =
+ dev->data->tx_queues[i];
+
+ if (i40e_txq_vec_setup(txq)) {
+ ad->tx_vec_allowed = false;
+ break;
+ }
+ }
+ }
+ }
+
+ 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;
+ } else {
+ PMD_INIT_LOG(DEBUG, "Simple tx finally be used.");
+ dev->tx_pkt_burst = i40e_xmit_pkts_simple;
+ }
+ } else {
+ PMD_INIT_LOG(DEBUG, "Xmit tx finally be used.");
+ dev->tx_pkt_burst = i40e_xmit_pkts;
+ }
+}
+
/* Stubs needed for linkage when CONFIG_RTE_I40E_INC_VECTOR is set to 'n' */
+int __attribute__((weak))
+i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev)
+{
+ return -1;
+}
+
uint16_t __attribute__((weak))
i40e_recv_pkts_vec(
void __rte_unused *rx_queue,
@@ -3089,6 +3240,12 @@ i40e_rxq_vec_setup(struct i40e_rx_queue __rte_unused *rxq)
return -1;
}
+int __attribute__((weak))
+i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq)
+{
+ return -1;
+}
+
void __attribute__((weak))
i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue __rte_unused*rxq)
{
@@ -3102,3 +3259,4 @@ i40e_xmit_pkts_vec(void __rte_unused *tx_queue,
{
return 0;
}
+
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
index 98d6e90..39cb95a 100644
--- a/drivers/net/i40e/i40e_rxtx.h
+++ b/drivers/net/i40e/i40e_rxtx.h
@@ -132,6 +132,7 @@ struct i40e_rx_queue {
uint8_t hs_mode; /* Header Split mode */
bool q_set; /**< indicate if rx queue has been configured */
bool rx_deferred_start; /**< don't start this queue in dev start */
+ uint16_t rx_using_sse; /**<flag indicate the usage of vPMD for rx */
};
struct i40e_tx_entry {
@@ -234,10 +235,15 @@ uint16_t i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t i40e_recv_scattered_pkts_vec(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
+int i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev);
int i40e_rxq_vec_setup(struct i40e_rx_queue *rxq);
int i40e_txq_vec_setup(struct i40e_tx_queue *txq);
void i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq);
uint16_t i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
+void i40e_set_rx_function(struct rte_eth_dev *dev);
+void i40e_set_tx_function_flag(struct rte_eth_dev *dev,
+ struct i40e_tx_queue *txq);
+void i40e_set_tx_function(struct rte_eth_dev *dev);
#endif /* _I40E_RXTX_H_ */
diff --git a/drivers/net/i40e/i40e_rxtx_vec.c b/drivers/net/i40e/i40e_rxtx_vec.c
index f746209..047aff5 100644
--- a/drivers/net/i40e/i40e_rxtx_vec.c
+++ b/drivers/net/i40e/i40e_rxtx_vec.c
@@ -743,3 +743,35 @@ i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq)
{
return 0;
}
+
+int __attribute__((cold))
+i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
+{
+#ifndef RTE_LIBRTE_IEEE1588
+ struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
+ struct rte_fdir_conf *fconf = &dev->data->dev_conf.fdir_conf;
+
+#ifndef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE
+ /* whithout rx ol_flags, no VP flag report */
+ if (rxmode->hw_vlan_strip != 0 ||
+ rxmode->hw_vlan_extend != 0)
+ return -1;
+#endif
+
+ /* no fdir support */
+ if (fconf->mode != RTE_FDIR_MODE_NONE)
+ return -1;
+
+ /* - no csum error report support
+ * - no header split support
+ */
+ if (rxmode->hw_ip_checksum == 1 ||
+ rxmode->header_split == 1)
+ return -1;
+
+ return 0;
+#else
+ RTE_SET_USED(dev);
+ return -1;
+#endif
+}