net/iavf: support CRC strip disabling

The VF will check the PF's CRC strip capability firstly, then set the
'CRC strip disable' value in the queue configuration according to the
RX CRC offload setting.

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 7bf31d4..49e6dd1 100644 (file)
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -800,6 +800,9 @@ iavf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
                DEV_TX_OFFLOAD_MULTI_SEGS |
                DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 
+       if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_CRC)
+               dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_KEEP_CRC;
+
        dev_info->default_rxconf = (struct rte_eth_rxconf) {
                .rx_free_thresh = IAVF_DEFAULT_RX_FREE_THRESH,
                .rx_drop_en = 0,

diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index 21d508b..d53d7b9 100644 (file)
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -550,11 +550,15 @@ iavf_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
        rxq->rx_free_thresh = rx_free_thresh;
        rxq->queue_id = queue_idx;
        rxq->port_id = dev->data->port_id;
-       rxq->crc_len = 0; /* crc stripping by default */
        rxq->rx_deferred_start = rx_conf->rx_deferred_start;
        rxq->rx_hdr_len = 0;
        rxq->vsi = vsi;
 
+       if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC)
+               rxq->crc_len = RTE_ETHER_CRC_LEN;
+       else
+               rxq->crc_len = 0;
+
        len = rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM;
        rxq->rx_buf_len = RTE_ALIGN(len, (1 << IAVF_RXQ_CTX_DBUFF_SHIFT));
 

diff --git a/drivers/net/iavf/iavf_vchnl.c b/drivers/net/iavf/iavf_vchnl.c
index 25d5cda..c33194c 100644 (file)
--- a/drivers/net/iavf/iavf_vchnl.c
+++ b/drivers/net/iavf/iavf_vchnl.c
@@ -458,6 +458,7 @@ iavf_get_vf_resource(struct iavf_adapter *adapter)
                VIRTCHNL_VF_OFFLOAD_FDIR_PF |
                VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF |
                VIRTCHNL_VF_OFFLOAD_REQ_QUEUES |
+               VIRTCHNL_VF_OFFLOAD_CRC |
                VIRTCHNL_VF_LARGE_NUM_QPAIRS;
 
        args.in_args = (uint8_t *)∩︀
@@ -853,7 +854,7 @@ iavf_configure_queues(struct iavf_adapter *adapter,
                vc_qp->rxq.ring_len = rxq[i]->nb_rx_desc;
                vc_qp->rxq.dma_ring_addr = rxq[i]->rx_ring_phys_addr;
                vc_qp->rxq.databuffer_size = rxq[i]->rx_buf_len;
-
+               vc_qp->rxq.crc_disable = rxq[i]->crc_len != 0 ? 1 : 0;
 #ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
                if (vf->vf_res->vf_cap_flags &
                    VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC &&