cxgbe: enable jumbo frames

[dpdk.git] / drivers / net / cxgbe / cxgbe_ethdev.c

diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c
index 478051a..6d7b29c 100644 (file)
--- a/drivers/net/cxgbe/cxgbe_ethdev.c
+++ b/drivers/net/cxgbe/cxgbe_ethdev.c
@@ -141,8 +141,8 @@ static void cxgbe_dev_info_get(struct rte_eth_dev *eth_dev,
        struct adapter *adapter = pi->adapter;
        int max_queues = adapter->sge.max_ethqsets / adapter->params.nports;
 
-       device_info->min_rx_bufsize = 68; /* XXX: Smallest pkt size */
-       device_info->max_rx_pktlen = 1500; /* XXX: For now we support mtu */
+       device_info->min_rx_bufsize = CXGBE_MIN_RX_BUFSIZE;
+       device_info->max_rx_pktlen = CXGBE_MAX_RX_PKTLEN;
        device_info->max_rx_queues = max_queues;
        device_info->max_tx_queues = max_queues;
        device_info->max_mac_addrs = 1;
@@ -498,6 +498,8 @@ static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
        int err = 0;
        int msi_idx = 0;
        unsigned int temp_nb_desc;
+       struct rte_eth_dev_info dev_info;
+       unsigned int pkt_len = eth_dev->data->dev_conf.rxmode.max_rx_pkt_len;
 
        RTE_SET_USED(rx_conf);
 
@@ -505,6 +507,17 @@ static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
                  __func__, eth_dev->data->nb_rx_queues, queue_idx, nb_desc,
                  socket_id, mp);
 
+       cxgbe_dev_info_get(eth_dev, &dev_info);
+
+       /* Must accommodate at least ETHER_MIN_MTU */
+       if ((pkt_len < dev_info.min_rx_bufsize) ||
+           (pkt_len > dev_info.max_rx_pktlen)) {
+               dev_err(adap, "%s: max pkt len must be > %d and <= %d\n",
+                       __func__, dev_info.min_rx_bufsize,
+                       dev_info.max_rx_pktlen);
+               return -EINVAL;
+       }
+
        /*  Free up the existing queue  */
        if (eth_dev->data->rx_queues[queue_idx]) {
                cxgbe_dev_rx_queue_release(eth_dev->data->rx_queues[queue_idx]);
@@ -534,6 +547,12 @@ static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
        if ((&rxq->fl) != NULL)
                rxq->fl.size = temp_nb_desc;
 
+       /* Set to jumbo mode if necessary */
+       if (pkt_len > ETHER_MAX_LEN)
+               eth_dev->data->dev_conf.rxmode.jumbo_frame = 1;
+       else
+               eth_dev->data->dev_conf.rxmode.jumbo_frame = 0;
+
        err = t4_sge_alloc_rxq(adapter, &rxq->rspq, false, eth_dev, msi_idx,
                               &rxq->fl, t4_ethrx_handler,
                               t4_get_mps_bg_map(adapter, pi->tx_chan), mp,