net/netvsc: fix crash in secondary process

The secondary process would crash trying to get the offload
capability of the device. Since the device capabilities were
already set by the primary process this was unnecessary.

Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/drivers/net/netvsc/hn_ethdev.c b/drivers/net/netvsc/hn_ethdev.c
index 159116f..c79f924 100644 (file)
--- a/drivers/net/netvsc/hn_ethdev.c
+++ b/drivers/net/netvsc/hn_ethdev.c
@@ -257,15 +257,16 @@ static int hn_dev_info_get(struct rte_eth_dev *dev,
        dev_info->max_rx_queues = hv->max_queues;
        dev_info->max_tx_queues = hv->max_queues;
 
-       rc = hn_rndis_get_offload(hv, dev_info);
-       if (rc != 0)
-               return rc;
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
 
-       rc = hn_vf_info_get(hv, dev_info);
+       /* fills in rx and tx offload capability */
+       rc = hn_rndis_get_offload(hv, dev_info);
        if (rc != 0)
                return rc;
 
-       return 0;
+       /* merges the offload and queues of vf */
+       return hn_vf_info_get(hv, dev_info);
 }
 
 static int hn_rss_reta_update(struct rte_eth_dev *dev,
@@ -929,6 +930,9 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
        eth_dev->tx_pkt_burst = &hn_xmit_pkts;
        eth_dev->rx_pkt_burst = &hn_recv_pkts;
 
+       /* Since Hyper-V only supports one MAC address, just use local data */
+       eth_dev->data->mac_addrs = &hv->mac_addr;
+
        /*
         * for secondary processes, we don't initialize any further as primary
         * has already done this work.
@@ -936,9 +940,6 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;
 
-       /* Since Hyper-V only supports one MAC address, just use local data */
-       eth_dev->data->mac_addrs = &hv->mac_addr;
-
        hv->vmbus = vmbus;
        hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
        hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];