In preparation for a bnxt vector-mode driver, compute and store
scattered_rx status for the device when started.
Signed-off-by: Lance Richardson <lance.richard...@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khapa...@broadcom.com>
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
v4:
* Moved a fix to bnxt_scattered_rx(), which is introduced in this patch,
from patch 4 into this patch. (The original version incorrectly
accounted for a possible QinQ header which was in fact already
accounted for).
drivers/net/bnxt/bnxt_ethdev.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index b0244d6d1..6295fec2a 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -624,6 +624,26 @@ static int bnxt_dev_lsc_intr_setup(struct rte_eth_dev
*eth_dev)
return 0;
}
+/*
+ * Determine whether the current configuration requires support for scattered
+ * receive; return 1 if scattered receive is required and 0 if not.
+ */
+static int bnxt_scattered_rx(struct rte_eth_dev *eth_dev)
+{
+ uint16_t buf_size;
+ int i;
+
+ for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
+ struct bnxt_rx_queue *rxq = eth_dev->data->rx_queues[i];
+
+ buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
+ RTE_PKTMBUF_HEADROOM);
+ if (eth_dev->data->dev_conf.rxmode.max_rx_pkt_len > buf_size)
+ return 1;
+ }
+ return 0;
+}
+
static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev)
{
struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
@@ -642,6 +662,8 @@ static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev)
if (rc)
goto error;
+ eth_dev->data->scattered_rx = bnxt_scattered_rx(eth_dev);
+
bnxt_link_update_op(eth_dev, 1);
if (rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
--
2.17.1
