[PATCH 2/3] net/nfp: fix representor creation failed

[Chaoyong He]

From: Long Wu <long.wu at corigine.com>

The former logic does not consider the simultaneous initialization of
several NICs using flower firmware. The reason the initialization
failed was because several NICs use the same name parameter when we
call rte_eth_dev_create().

We use the PCI address to give each NIC a unique name parameter and let
the initializtion succeed.

Fixes: e1124c4f8a45 ("net/nfp: add flower representor framework")
Cc: chaoyong.he at corigine.com
Cc: stable at dpdk.org

Signed-off-by: Long Wu <long.wu at corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund at corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he at corigine.com>
---
 drivers/net/nfp/flower/nfp_flower_representor.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/nfp/flower/nfp_flower_representor.c b/drivers/net/nfp/flower/nfp_flower_representor.c
index 3225a4b84a..5118c9c57c 100644
--- a/drivers/net/nfp/flower/nfp_flower_representor.c
+++ b/drivers/net/nfp/flower/nfp_flower_representor.c
@@ -723,6 +723,7 @@ nfp_flower_repr_alloc(struct nfp_app_fw_flower *app_fw_flower)
 {
 	int i;
 	int ret;
+	struct rte_device *device;
 	struct rte_eth_dev *eth_dev;
 	struct nfp_eth_table *nfp_eth_table;
 	struct nfp_eth_table_port *eth_port;
@@ -746,7 +747,11 @@ nfp_flower_repr_alloc(struct nfp_app_fw_flower *app_fw_flower)
 
 	/* PF vNIC reprs get a random MAC address */
 	rte_eth_random_addr(flower_repr.mac_addr.addr_bytes);
-	sprintf(flower_repr.name, "flower_repr_pf");
+
+	device = &app_fw_flower->pf_hw->pf_dev->pci_dev->device;
+
+	snprintf(flower_repr.name, sizeof(flower_repr.name),
+			"%s_flower_repr_pf", device->name);
 
 	/* Create a eth_dev for this representor */
 	ret = rte_eth_dev_create(eth_dev->device, flower_repr.name,
@@ -767,7 +772,8 @@ nfp_flower_repr_alloc(struct nfp_app_fw_flower *app_fw_flower)
 
 		/* Copy the real mac of the interface to the representor struct */
 		rte_ether_addr_copy(&eth_port->mac_addr, &flower_repr.mac_addr);
-		sprintf(flower_repr.name, "flower_repr_p%d", i);
+		snprintf(flower_repr.name, sizeof(flower_repr.name),
+				"%s_fl_repr_p%d", device->name, i);
 
 		/*
 		 * Create a eth_dev for this representor
@@ -798,7 +804,8 @@ nfp_flower_repr_alloc(struct nfp_app_fw_flower *app_fw_flower)
 
 		/* VF reprs get a random MAC address */
 		rte_eth_random_addr(flower_repr.mac_addr.addr_bytes);
-		sprintf(flower_repr.name, "flower_repr_vf%d", i);
+		snprintf(flower_repr.name, sizeof(flower_repr.name),
+				"%s_fl_repr_vf%d", device->name, i);
 
 		 /* This will also allocate private memory for the device*/
 		ret = rte_eth_dev_create(eth_dev->device, flower_repr.name,
-- 
2.39.1