[PATCH] net/bonding: support bifurcated driver in eal cli using --vdev

[Gowrishankar <gowrishankar.m@linux.vnet.ibm.com>]

From: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>

At present, creating bonding devices using --vdev is broken for PMD like
mlx5 as it is neither UIO nor VFIO based and hence PMD driver is unknown
to find_port_id_by_pci_addr(), as below.

testpmd <EAL args> --vdev 'net_bonding0,mode=1,slave=<PCI>,socket_id=0'

PMD: bond_ethdev_parse_slave_port_kvarg(150) - Invalid slave port value
 (<PCI ID>) specified
EAL: Failed to parse slave ports for bonded device net_bonding0

This patch adds RTE_KDRV_BIFURCATED in rte_kernel_driver for the PMD
driver like mlx5 to be a known one.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 lib/librte_eal/common/include/rte_pci.h | 1 +
 lib/librte_eal/linuxapp/eal/eal_pci.c   | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index b82ab9e..bbfd50d 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -126,6 +126,7 @@ enum rte_kernel_driver {
 	RTE_KDRV_VFIO,
 	RTE_KDRV_UIO_GENERIC,
 	RTE_KDRV_NIC_UIO,
+	RTE_KDRV_BIFURCATED,
 	RTE_KDRV_NONE,
 };
 
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index 595622b..a222ec3 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -351,6 +351,8 @@
 			dev->kdrv = RTE_KDRV_IGB_UIO;
 		else if (!strcmp(driver, "uio_pci_generic"))
 			dev->kdrv = RTE_KDRV_UIO_GENERIC;
+		else if (!strcmp(driver, "mlx5_core"))
+			dev->kdrv = RTE_KDRV_BIFURCATED;
 		else
 			dev->kdrv = RTE_KDRV_UNKNOWN;
 	} else
-- 
1.9.1