dpdk: patch to support bonded interface for MLX NIC

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().

This DPDK patch fixes parsing PCI ID from bonding device params by verifying
it in RTE PCI bus, rather than checking dev->kdrv.

Change-Id: If575f63ef31733102566610d769ddd212d74736a
Signed-off-by: Steve Shin <jonshin@cisco.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/dpdk/dpdk-17.08_patches/0001-net-bonding-support-for-mlx.patch b/dpdk/dpdk-17.08_patches/0001-net-bonding-support-for-mlx.patch
new file mode 100644
index 00000000000..13a2ba67b0a
--- /dev/null
+++ b/dpdk/dpdk-17.08_patches/0001-net-bonding-support-for-mlx.patch
@@ -0,0 +1,63 @@
+diff --git a/drivers/net/bonding/rte_eth_bond_args.c b/drivers/net/bonding/rte_eth_bond_args.c
+index bb634c6..7c65dda 100644
+--- a/drivers/net/bonding/rte_eth_bond_args.c
++++ b/drivers/net/bonding/rte_eth_bond_args.c
+@@ -61,16 +61,6 @@
+ 	unsigned i;
+ 
+ 	for (i = 0; i < rte_eth_dev_count(); i++) {
+-
+-		/* Currently populated by rte_eth_copy_pci_info().
+-		 *
+-		 * TODO: Once the PCI bus has arrived we should have a better
+-		 * way to test for being a PCI device or not.
+-		 */
+-		if (rte_eth_devices[i].data->kdrv == RTE_KDRV_UNKNOWN ||
+-		    rte_eth_devices[i].data->kdrv == RTE_KDRV_NONE)
+-			continue;
+-
+ 		pci_dev = RTE_ETH_DEV_TO_PCI(&rte_eth_devices[i]);
+ 		eth_pci_addr = &pci_dev->addr;
+ 
+@@ -98,6 +88,16 @@
+ 	return -1;
+ }
+ 
++static inline int
++pci_addr_cmp(const struct rte_device *dev, const void *_pci_addr)
++{
++	struct rte_pci_device *pdev;
++	const struct rte_pci_addr *paddr = _pci_addr;
++
++	pdev = RTE_DEV_TO_PCI(*(struct rte_device **)(void *)&dev);
++	return rte_eal_compare_pci_addr(&pdev->addr, paddr);
++}
++
+ /**
+  * Parses a port identifier string to a port id by pci address, then by name,
+  * and finally port id.
+@@ -106,10 +106,23 @@
+ parse_port_id(const char *port_str)
+ {
+ 	struct rte_pci_addr dev_addr;
++	struct rte_bus *pci_bus;
++	struct rte_device *dev;
+ 	int port_id;
+ 
++	pci_bus = rte_bus_find_by_name("pci");
++	if (pci_bus == NULL) {
++		RTE_LOG(ERR, PMD, "unable to find PCI bus\n");
++		return -1;
++	}
++
+ 	/* try parsing as pci address, physical devices */
+-	if (eal_parse_pci_DomBDF(port_str, &dev_addr) == 0) {
++	if (pci_bus->parse(port_str, &dev_addr) == 0) {
++		dev = pci_bus->find_device(NULL, pci_addr_cmp, &dev_addr);
++		if (dev == NULL) {
++			RTE_LOG(ERR, PMD, "unable to find PCI device\n");
++			return -1;
++		}
+ 		port_id = find_port_id_by_pci_addr(&dev_addr);
+ 		if (port_id < 0)
+ 			return -1;