[dpdk-dev] [PATCH] net/ice: fix memzone leak when firmware is missing

[David Marchand <david.marchand@redhat.com>]

Caught by our QE.
When the firmware is missing, memzones were not released.

$ dpdk-testpmd -c 0x1f -a 0:0:0.0 -- -i
...

testpmd> dump_memzone
...
Zone 6: name:<RTE_METRICS>, len:0x15040, virt:0x1661b24c0, socket_id:0,
flags:0
physical segments used:
  addr: 0x140000000 iova: 0x140000000 len: 0x40000000 pagesz: 0x40000000

testpmd> port attach 0000:5e:00.0
Attaching a new port...
EAL: Using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_ice (8086:159b) device: 0000:5e:00.0 (socket 0)
ice_load_pkg(): failed to open file: /lib/firmware/intel/ice/ddp/ice.pkg

ice_dev_init(): Failed to load the DDP package,Use safe-mode-support=1 to
 enter Safe Mode
EAL: Releasing PCI mapped resource for 0000:5e:00.0
EAL: Calling pci_unmap_resource for 0000:5e:00.0 at 0x2200000000
EAL: Calling pci_unmap_resource for 0000:5e:00.0 at 0x2202000000
EAL: Driver cannot attach the device (0000:5e:00.0)
EAL: Failed to attach device on primary process
testpmd: Failed to attach port 0000:5e:00.0

testpmd> dump_memzone
...
Zone 139: name:<ice_dma_17168374657430093156>, len:0x1000,
  virt:0x1660ed800, socket_id:0, flags:0 physical segments used:
  addr: 0x140000000 iova: 0x140000000 len: 0x40000000 pagesz: 0x40000000

With 20 tries attaching a net/ice port, we would end up with:

EAL: Probe PCI driver: net_ice (8086:159b) device: 0000:5e:00.0 (socket 0)
EAL: memzone_reserve_aligned_thread_unsafe(): Number of requested memzone
  segments exceeds RTE_MAX_MEMZONE
ice_dev_init(): Failed to initialize HW

Fixes: a4c8c48fe3f4 ("net/ice: load OS default package")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 drivers/net/ice/ice_ethdev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 09e38590e5..f85c7cc8da 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -2085,7 +2085,7 @@ ice_dev_init(struct rte_eth_dev *dev)
 		if (ad->devargs.safe_mode_support == 0) {
 			PMD_INIT_LOG(ERR, "Failed to load the DDP package,"
 					"Use safe-mode-support=1 to enter Safe Mode");
-			return ret;
+			goto err_init_fw;
 		}
 
 		PMD_INIT_LOG(WARNING, "Failed to load the DDP package,"
@@ -2175,6 +2175,8 @@ ice_dev_init(struct rte_eth_dev *dev)
 	rte_free(dev->data->mac_addrs);
 	dev->data->mac_addrs = NULL;
 err_init_mac:
+	ice_free_hw_tbls(hw);
+err_init_fw:
 	ice_sched_cleanup_all(hw);
 	rte_free(hw->port_info);
 	ice_shutdown_all_ctrlq(hw);
-- 
2.23.0