Add implementation for probe in secondary.

Failsafe will attempt to attach all the sub-devices in
secondary process.

Signed-off-by: Raslan Darawsheh <rasl...@mellanox.com>
Signed-off-by: Thomas Monjalon <tho...@monjalon.net>
---
 drivers/net/failsafe/failsafe.c | 43 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/drivers/net/failsafe/failsafe.c b/drivers/net/failsafe/failsafe.c
index 68926ca..fa083fa 100644
--- a/drivers/net/failsafe/failsafe.c
+++ b/drivers/net/failsafe/failsafe.c
@@ -313,10 +313,27 @@ fs_rte_eth_free(const char *name)
 }
 
 static int
+devargs_already_listed(struct rte_devargs *devargs)
+{
+       struct rte_devargs *list_da;
+
+       RTE_EAL_DEVARGS_FOREACH(devargs->bus->name, list_da) {
+               if (strcmp(list_da->name, devargs->name) == 0)
+                       /* devargs already in the list */
+                       return 1;
+       }
+       return 0;
+}
+
+static int
 rte_pmd_failsafe_probe(struct rte_vdev_device *vdev)
 {
        const char *name;
        struct rte_eth_dev *eth_dev;
+       struct sub_device  *sdev;
+       struct rte_devargs devargs;
+       uint8_t i;
+       int ret;
 
        name = rte_vdev_device_name(vdev);
        INFO("Initializing " FAILSAFE_DRIVER_NAME " for %s",
@@ -329,9 +346,33 @@ rte_pmd_failsafe_probe(struct rte_vdev_device *vdev)
                        ERROR("Failed to probe %s", name);
                        return -1;
                }
-               /* TODO: request info from primary to set up Rx and Tx */
                eth_dev->dev_ops = &failsafe_ops;
                eth_dev->device = &vdev->device;
+               eth_dev->rx_pkt_burst = (eth_rx_burst_t)&failsafe_rx_burst;
+               eth_dev->tx_pkt_burst = (eth_tx_burst_t)&failsafe_tx_burst;
+               /*
+                * Failsafe will attempt to probe all of its sub-devices.
+                * Any failure in sub-devices is not a fatal error.
+                * A sub-device can be plugged later.
+                */
+               FOREACH_SUBDEV(sdev, i, eth_dev) {
+                       /* rebuild devargs to be able to get the bus name. */
+                       ret = rte_devargs_parse(&devargs,
+                                               sdev->devargs.name);
+                       if (ret != 0) {
+                               ERROR("Failed to parse devargs %s",
+                                       devargs.name);
+                               continue;
+                       }
+                       if (!devargs_already_listed(&devargs)) {
+                               ret = rte_dev_probe(devargs.name);
+                               if (ret != 0) {
+                                       ERROR("Failed to probe devargs %s",
+                                             devargs.name);
+                                       continue;
+                               }
+                       }
+               }
                rte_eth_dev_probing_finish(eth_dev);
                return 0;
        }
-- 
2.7.4

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