From: Ivan Malov <ivan.ma...@oktetlabs.ru>

Reviewed-by: Andy Moreton <amoreton at solarflare.com>
Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
 drivers/net/sfc/efx/sfc_tx.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/drivers/net/sfc/efx/sfc_tx.c b/drivers/net/sfc/efx/sfc_tx.c
index c418185..fecd058 100644
--- a/drivers/net/sfc/efx/sfc_tx.c
+++ b/drivers/net/sfc/efx/sfc_tx.c
@@ -43,12 +43,53 @@ sfc_tx_qinit_info(struct sfc_adapter *sa, unsigned int 
sw_index)
        return 0;
 }

+static int
+sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
+{
+       int rc = 0;
+
+       switch (txmode->mq_mode) {
+       case ETH_MQ_TX_NONE:
+               break;
+       default:
+               sfc_err(sa, "Tx multi-queue mode %u not supported",
+                       txmode->mq_mode);
+               rc = EINVAL;
+       }
+
+       /*
+        * These features are claimed to be i40e-specific,
+        * but it does make sense to double-check their absence
+        */
+       if (txmode->hw_vlan_reject_tagged) {
+               sfc_err(sa, "Rejecting tagged packets not supported");
+               rc = EINVAL;
+       }
+
+       if (txmode->hw_vlan_reject_untagged) {
+               sfc_err(sa, "Rejecting untagged packets not supported");
+               rc = EINVAL;
+       }
+
+       if (txmode->hw_vlan_insert_pvid) {
+               sfc_err(sa, "Port-based VLAN insertion not supported");
+               rc = EINVAL;
+       }
+
+       return rc;
+}
+
 int
 sfc_tx_init(struct sfc_adapter *sa)
 {
+       const struct rte_eth_conf *dev_conf = &sa->eth_dev->data->dev_conf;
        int sw_index;
        int rc = 0;

+       rc = sfc_tx_check_mode(sa, &dev_conf->txmode);
+       if (rc != 0)
+               goto fail_check_mode;
+
        sa->txq_count = sa->eth_dev->data->nb_tx_queues;

        sa->txq_info = rte_calloc_socket("sfc-txqs", sa->txq_count,
@@ -72,6 +113,7 @@ sfc_tx_init(struct sfc_adapter *sa)
 fail_txqs_alloc:
        sa->txq_count = 0;

+fail_check_mode:
        sfc_log_init(sa, "failed (rc = %d)", rc);
        return rc;
 }
-- 
2.5.5

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