[PATCH net-next] liquidio: napi cleanup

[Felix Manlunas]

From: Intiyaz Basha <intiyaz.ba...@cavium.com>

Disable napi when interface is going down.
Delete napi when destroying the interface.

Signed-off-by: Intiyaz Basha <intiyaz.ba...@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlu...@cavium.com>
---
 drivers/net/ethernet/cavium/liquidio/lio_main.c    | 15 +++++++++++++++
 drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 14 ++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c 
b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 3ec0dd9..cbd6287 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -1736,6 +1736,10 @@ static void liquidio_destroy_nic_device(struct 
octeon_device *oct, int ifidx)
                        oct->droq[0]->ops.poll_mode = 0;
        }
 
+       /* Delete NAPI */
+       list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+               netif_napi_del(napi);
+
        if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
                unregister_netdev(netdev);
 
@@ -2770,6 +2774,17 @@ static int liquidio_stop(struct net_device *netdev)
 {
        struct lio *lio = GET_LIO(netdev);
        struct octeon_device *oct = lio->oct_dev;
+       struct napi_struct *napi, *n;
+
+       if (oct->props[lio->ifidx].napi_enabled) {
+               list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+                       napi_disable(napi);
+
+               oct->props[lio->ifidx].napi_enabled = 0;
+
+               if (OCTEON_CN23XX_PF(oct))
+                       oct->droq[0]->ops.poll_mode = 0;
+       }
 
        ifstate_reset(lio, LIO_IFSTATE_RUNNING);
 
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c 
b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
index 935ff29..c6f52f2 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -1137,6 +1137,10 @@ static void liquidio_destroy_nic_device(struct 
octeon_device *oct, int ifidx)
                oct->droq[0]->ops.poll_mode = 0;
        }
 
+       /* Delete NAPI */
+       list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+               netif_napi_del(napi);
+
        if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
                unregister_netdev(netdev);
 
@@ -1784,6 +1788,16 @@ static int liquidio_stop(struct net_device *netdev)
 {
        struct lio *lio = GET_LIO(netdev);
        struct octeon_device *oct = lio->oct_dev;
+       struct napi_struct *napi, *n;
+
+       if (oct->props[lio->ifidx].napi_enabled) {
+               list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
+                       napi_disable(napi);
+
+               oct->props[lio->ifidx].napi_enabled = 0;
+
+               oct->droq[0]->ops.poll_mode = 0;
+       }
 
        netif_info(lio, ifdown, lio->netdev, "Stopping interface!\n");
        /* Inform that netif carrier is down */