[dpdk-dev] [PATCH] net/tap: fix the vdev data sharing for tun
Wiles, Keith
keith.wiles at intel.com
Tue May 15 14:35:09 CEST 2018
> On May 12, 2018, at 1:37 AM, Vipin Varghese <vipin.varghese at intel.com> wrote:
>
> Fixes: ee27edbe0c10 ("drivers/net: share vdev data to secondary process")
>
> Enables TUN PMD sharing by attaching the port from the shared data.
>
> Cc: zhihong.wang at intel.com
> Cc: ferruh.yigit at intel.com
>
> Signed-off-by: Vipin Varghese <vipin.varghese at intel.com>
> ---
> ---
> drivers/net/tap/rte_eth_tap.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
> index db397d6..ea6d899 100644
> --- a/drivers/net/tap/rte_eth_tap.c
> +++ b/drivers/net/tap/rte_eth_tap.c
> @@ -1657,6 +1657,7 @@ rte_pmd_tun_probe(struct rte_vdev_device *dev)
> struct rte_kvargs *kvlist = NULL;
> char tun_name[RTE_ETH_NAME_MAX_LEN];
> char remote_iface[RTE_ETH_NAME_MAX_LEN];
> + struct rte_eth_dev *eth_dev;
>
> tap_type = 0;
> strcpy(tuntap_name, "TUN");
> @@ -1665,6 +1666,18 @@ rte_pmd_tun_probe(struct rte_vdev_device *dev)
> params = rte_vdev_device_args(dev);
> memset(remote_iface, 0, RTE_ETH_NAME_MAX_LEN);
>
> + if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
> + strlen(params) == 0) {
> + eth_dev = rte_eth_dev_attach_secondary(name);
> + if (!eth_dev) {
> + TAP_LOG(ERR, "Failed to probe %s", name);
> + return -1;
> + }
> + /* TODO: request info from primary to set up Rx and Tx */
What is the rule (if we have one) about having TODO, FIXME, … like comments in the code? Maybe remove the todo and create a enhancement request for later.
> + eth_dev->dev_ops = &ops;
> + return 0;
> + }
> +
> snprintf(tun_name, sizeof(tun_name), "%s%u",
> DEFAULT_TUN_NAME, tun_unit++);
>
> --
> 2.7.4
>
Regards,
Keith
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