From: Vipin Varghese <vipin.varghese@intel.com>
Date: Tue, 22 May 2018 11:01:54 +0000 (+0530)
Subject: net/tap: fix vdev data sharing for tun
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=d8dc42fab62b96a6fe55087d7b9c091603ae17c3;p=dpdk.git

net/tap: fix vdev data sharing for tun

Enables TUN PMD sharing by attaching the port from the shared data.

Fixes: ee27edbe0c10 ("drivers/net: share vdev data to secondary process")

Signed-off-by: Vipin Varghese <vipin.varghese@intel.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
---

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 6bb7962bb4..310c7d8e8f 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -1653,6 +1653,7 @@ 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;
 
 	strcpy(tuntap_name, "TUN");
 
@@ -1660,6 +1661,17 @@ 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;
+		}
+		eth_dev->dev_ops = &ops;
+		return 0;
+	}
+
 	snprintf(tun_name, sizeof(tun_name), "%s%u",
 		 DEFAULT_TUN_NAME, tun_unit++);