From: Shannon Nelson <snelson@pensando.io>
Date: Mon, 11 May 2020 17:59:29 -0700
Subject: ionic: protect vf calls from fw reset
Patch-mainline: v5.8-rc1
Git-commit: a836c352291d4ad4031743a97a61f7916fe519b7
References: jsc#SLE-16649
When going into a firmware upgrade cycle, we set the device as
not present to keep some user commands from trying to change
the driver while we're only half there. Unfortunately, the
ndo_vf_* calls don't check netif_device_present() so we need
to add a check in the callbacks.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/pensando/ionic/ionic_lif.c | 26 +++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -1707,7 +1707,7 @@ int ionic_stop(struct net_device *netdev
{
struct ionic_lif *lif = netdev_priv(netdev);
- if (test_bit(IONIC_LIF_F_FW_RESET, lif->state))
+ if (!netif_device_present(netdev))
return 0;
ionic_stop_queues(lif);
@@ -1724,6 +1724,9 @@ static int ionic_get_vf_config(struct ne
struct ionic *ionic = lif->ionic;
int ret = 0;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_read(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1751,6 +1754,9 @@ static int ionic_get_vf_stats(struct net
struct ionic_lif_stats *vs;
int ret = 0;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_read(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1786,6 +1792,9 @@ static int ionic_set_vf_mac(struct net_d
if (!(is_zero_ether_addr(mac) || is_valid_ether_addr(mac)))
return -EINVAL;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1817,6 +1826,9 @@ static int ionic_set_vf_vlan(struct net_
if (proto != htons(ETH_P_8021Q))
return -EPROTONOSUPPORT;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1843,6 +1855,9 @@ static int ionic_set_vf_rate(struct net_
if (tx_min)
return -EINVAL;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1865,6 +1880,9 @@ static int ionic_set_vf_spoofchk(struct
u8 data = set; /* convert to u8 for config */
int ret;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1887,6 +1905,9 @@ static int ionic_set_vf_trust(struct net
u8 data = set; /* convert to u8 for config */
int ret;
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {
@@ -1923,6 +1944,9 @@ static int ionic_set_vf_link_state(struc
return -EINVAL;
}
+ if (!netif_device_present(netdev))
+ return -EBUSY;
+
down_write(&ionic->vf_op_lock);
if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) {