It wouldn't check the configured maximum packet length, and then
the scattered receiving function wouldn't be selected at all even
if it wants to receive a jumbo frame. The fix is to select the
correct RX function according to the configurations.
Signed-off-by: Helin Zhang <helin.zhang at intel.com>
---
lib/librte_pmd_i40e/i40e_ethdev.h | 2 +
lib/librte_pmd_i40e/i40e_ethdev_vf.c | 85 +++++++++++++++++++++++-----------
lib/librte_pmd_i40e/i40e_rxtx.c | 1 -
3 files changed, 59 insertions(+), 29 deletions(-)
v2 changes:
* Removed maximum packet length check and jumbo frame check in
i40evf_dev_start(), as the same checks are already in each queue
initialization.
diff --git a/lib/librte_pmd_i40e/i40e_ethdev.h
b/lib/librte_pmd_i40e/i40e_ethdev.h
index b9bed5a..7ecd249 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.h
+++ b/lib/librte_pmd_i40e/i40e_ethdev.h
@@ -36,6 +36,8 @@
#include <rte_eth_ctrl.h>
+#define I40E_VLAN_TAG_SIZE 4
+
#define I40E_AQ_LEN 32
#define I40E_AQ_BUF_SZ 4096
/* Number of queues per TC should be one of 1, 2, 4, 8, 16, 32, 64 */
diff --git a/lib/librte_pmd_i40e/i40e_ethdev_vf.c
b/lib/librte_pmd_i40e/i40e_ethdev_vf.c
index a0d808f..e260bb5 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev_vf.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev_vf.c
@@ -1417,23 +1417,74 @@ i40evf_vlan_filter_set(struct rte_eth_dev *dev,
uint16_t vlan_id, int on)
}
static int
+i40evf_rxq_init(struct rte_eth_dev *dev, struct i40e_rx_queue *rxq)
+{
+ struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ struct rte_eth_dev_data *dev_data = dev->data;
+ struct rte_pktmbuf_pool_private *mbp_priv;
+ uint16_t buf_size, len;
+
+ rxq->qrx_tail = hw->hw_addr + I40E_QRX_TAIL1(rxq->queue_id);
+ I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
+ I40EVF_WRITE_FLUSH(hw);
+
+ /* Calculate the maximum packet length allowed */
+ mbp_priv = rte_mempool_get_priv(rxq->mp);
+ buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
+ RTE_PKTMBUF_HEADROOM);
+ rxq->hs_mode = i40e_header_split_none;
+ rxq->rx_hdr_len = 0;
+ rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
+ len = rxq->rx_buf_len * I40E_MAX_CHAINED_RX_BUFFERS;
+ rxq->max_pkt_len = RTE_MIN(len,
+ dev_data->dev_conf.rxmode.max_rx_pkt_len);
+
+ /**
+ * Check if the jumbo frame and maximum packet length are set correctly
+ */
+ if (dev_data->dev_conf.rxmode.jumbo_frame == 1) {
+ if (rxq->max_pkt_len <= ETHER_MAX_LEN ||
+ rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) {
+ PMD_DRV_LOG(ERR, "maximum packet length must be "
+ "larger than %u and smaller than %u, as jumbo "
+ "frame is enabled", (uint32_t)ETHER_MAX_LEN,
+ (uint32_t)I40E_FRAME_SIZE_MAX);
+ return I40E_ERR_CONFIG;
+ }
+ } else {
+ if (rxq->max_pkt_len < ETHER_MIN_LEN ||
+ rxq->max_pkt_len > ETHER_MAX_LEN) {
+ PMD_DRV_LOG(ERR, "maximum packet length must be "
+ "larger than %u and smaller than %u, as jumbo "
+ "frame is disabled", (uint32_t)ETHER_MIN_LEN,
+ (uint32_t)ETHER_MAX_LEN);
+ return I40E_ERR_CONFIG;
+ }
+ }
+
+ 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;
+}
+
+static int
i40evf_rx_init(struct rte_eth_dev *dev)
{
struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
uint16_t i;
struct i40e_rx_queue **rxq =
(struct i40e_rx_queue **)dev->data->rx_queues;
- struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
i40evf_config_rss(vf);
for (i = 0; i < dev->data->nb_rx_queues; i++) {
- rxq[i]->qrx_tail = hw->hw_addr + I40E_QRX_TAIL1(i);
- I40E_PCI_REG_WRITE(rxq[i]->qrx_tail, rxq[i]->nb_rx_desc - 1);
+ if (i40evf_rxq_init(dev, rxq[i]) < 0)
+ return -EFAULT;
}
- /* Flush the operation to write registers */
- I40EVF_WRITE_FLUSH(hw);
-
return 0;
}
@@ -1474,28 +1525,6 @@ i40evf_dev_start(struct rte_eth_dev *dev)
PMD_INIT_FUNC_TRACE();
vf->max_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
- if (dev->data->dev_conf.rxmode.jumbo_frame == 1) {
- if (vf->max_pkt_len <= ETHER_MAX_LEN ||
- vf->max_pkt_len > I40E_FRAME_SIZE_MAX) {
- PMD_DRV_LOG(ERR, "maximum packet length must "
- "be larger than %u and smaller than %u,"
- "as jumbo frame is enabled",
- (uint32_t)ETHER_MAX_LEN,
- (uint32_t)I40E_FRAME_SIZE_MAX);
- return I40E_ERR_CONFIG;
- }
- } else {
- if (vf->max_pkt_len < ETHER_MIN_LEN ||
- vf->max_pkt_len > ETHER_MAX_LEN) {
- PMD_DRV_LOG(ERR, "maximum packet length must be "
- "larger than %u and smaller than %u, "
- "as jumbo frame is disabled",
- (uint32_t)ETHER_MIN_LEN,
- (uint32_t)ETHER_MAX_LEN);
- return I40E_ERR_CONFIG;
- }
- }
-
vf->num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues,
dev->data->nb_tx_queues);
diff --git a/lib/librte_pmd_i40e/i40e_rxtx.c b/lib/librte_pmd_i40e/i40e_rxtx.c
index 493cfa3..49d1030 100644
--- a/lib/librte_pmd_i40e/i40e_rxtx.c
+++ b/lib/librte_pmd_i40e/i40e_rxtx.c
@@ -64,7 +64,6 @@
#define DEFAULT_TX_FREE_THRESH 32
#define I40E_MAX_PKT_TYPE 256
-#define I40E_VLAN_TAG_SIZE 4
#define I40E_TX_MAX_BURST 32
#define I40E_DMA_MEM_ALIGN 4096
--
1.7.7
