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-rw-r--r--drivers/s390/net/qeth_core.h5
-rw-r--r--drivers/s390/net/qeth_core_main.c51
-rw-r--r--drivers/s390/net/qeth_l2_main.c47
-rw-r--r--drivers/s390/net/qeth_l3_main.c19
4 files changed, 20 insertions, 102 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index ffec26ff512d..df270ef3964c 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -802,7 +802,6 @@ struct qeth_card {
unsigned long thread_start_mask;
unsigned long thread_allowed_mask;
unsigned long thread_running_mask;
- struct task_struct *recovery_task;
spinlock_t ip_lock;
struct qeth_ipato ipato;
struct list_head cmd_waiter_list;
@@ -976,11 +975,8 @@ extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
struct net_device *qeth_clone_netdev(struct net_device *orig);
struct qeth_card *qeth_get_card_by_busid(char *bus_id);
-void qeth_set_recovery_task(struct qeth_card *);
-void qeth_clear_recovery_task(struct qeth_card *);
void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
int qeth_threads_running(struct qeth_card *, unsigned long);
-int qeth_wait_for_threads(struct qeth_card *, unsigned long);
int qeth_do_run_thread(struct qeth_card *, unsigned long);
void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
@@ -1047,7 +1043,6 @@ netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
netdev_features_t qeth_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features);
-int qeth_open_internal(struct net_device *dev);
int qeth_open(struct net_device *dev);
int qeth_stop(struct net_device *dev);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 06bd42a846fa..f7c097a613fc 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -193,23 +193,6 @@ const char *qeth_get_cardname_short(struct qeth_card *card)
return "n/a";
}
-void qeth_set_recovery_task(struct qeth_card *card)
-{
- card->recovery_task = current;
-}
-EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
-
-void qeth_clear_recovery_task(struct qeth_card *card)
-{
- card->recovery_task = NULL;
-}
-EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
-
-static bool qeth_is_recovery_task(const struct qeth_card *card)
-{
- return card->recovery_task == current;
-}
-
void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
int clear_start_mask)
{
@@ -236,15 +219,6 @@ int qeth_threads_running(struct qeth_card *card, unsigned long threads)
}
EXPORT_SYMBOL_GPL(qeth_threads_running);
-int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
-{
- if (qeth_is_recovery_task(card))
- return 0;
- return wait_event_interruptible(card->wait_q,
- qeth_threads_running(card, threads) == 0);
-}
-EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
-
void qeth_clear_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
@@ -5923,9 +5897,6 @@ int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
if (!card)
return -ENODEV;
- if (!qeth_card_hw_is_reachable(card))
- return -ENODEV;
-
if (card->info.type == QETH_CARD_TYPE_OSN)
return -EPERM;
@@ -6236,8 +6207,6 @@ int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
/* Check if we can obtain more accurate information. */
/* If QUERY_CARD_INFO command is not supported or fails, */
/* just return the heuristics that was filled above. */
- if (!qeth_card_hw_is_reachable(card))
- return -ENODEV;
rc = qeth_query_card_info(card, &carrier_info);
if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
return 0;
@@ -6608,10 +6577,7 @@ netdev_features_t qeth_fix_features(struct net_device *dev,
features &= ~NETIF_F_TSO;
if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
features &= ~NETIF_F_TSO6;
- /* if the card isn't up, remove features that require hw changes */
- if (card->state == CARD_STATE_DOWN ||
- card->state == CARD_STATE_RECOVER)
- features &= ~QETH_HW_FEATURES;
+
QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
return features;
}
@@ -6643,7 +6609,7 @@ netdev_features_t qeth_features_check(struct sk_buff *skb,
}
EXPORT_SYMBOL_GPL(qeth_features_check);
-int qeth_open_internal(struct net_device *dev)
+int qeth_open(struct net_device *dev)
{
struct qeth_card *card = dev->ml_priv;
@@ -6667,19 +6633,6 @@ int qeth_open_internal(struct net_device *dev)
local_bh_enable();
return 0;
}
-EXPORT_SYMBOL_GPL(qeth_open_internal);
-
-int qeth_open(struct net_device *dev)
-{
- struct qeth_card *card = dev->ml_priv;
-
- QETH_CARD_TEXT(card, 5, "qethope_");
- if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
- QETH_CARD_TEXT(card, 3, "openREC");
- return -ERESTARTSYS;
- }
- return qeth_open_internal(dev);
-}
EXPORT_SYMBOL_GPL(qeth_open);
int qeth_stop(struct net_device *dev)
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 295ec94b226f..18dfb1b5e690 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -283,10 +283,7 @@ static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
if (!vid)
return 0;
- if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
- QETH_CARD_TEXT(card, 3, "aidREC");
- return 0;
- }
+
id = kmalloc(sizeof(*id), GFP_KERNEL);
if (id) {
id->vid = vid;
@@ -312,10 +309,7 @@ static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
int rc = 0;
QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
- if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
- QETH_CARD_TEXT(card, 3, "kidREC");
- return 0;
- }
+
mutex_lock(&card->vid_list_mutex);
list_for_each_entry(id, &card->vid_list, list) {
if (id->vid == vid) {
@@ -496,39 +490,22 @@ static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
- if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
- QETH_CARD_TEXT(card, 3, "setmcREC");
- return -ERESTARTSYS;
- }
-
- /* avoid racing against concurrent state change: */
- if (!mutex_trylock(&card->conf_mutex))
- return -EAGAIN;
-
- if (!qeth_card_hw_is_reachable(card)) {
- ether_addr_copy(dev->dev_addr, addr->sa_data);
- goto out_unlock;
- }
-
/* don't register the same address twice */
if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
- goto out_unlock;
+ return 0;
/* add the new address, switch over, drop the old */
rc = qeth_l2_send_setmac(card, addr->sa_data);
if (rc)
- goto out_unlock;
+ return rc;
ether_addr_copy(old_addr, dev->dev_addr);
ether_addr_copy(dev->dev_addr, addr->sa_data);
if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)
qeth_l2_remove_mac(card, old_addr);
card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
-
-out_unlock:
- mutex_unlock(&card->conf_mutex);
- return rc;
+ return 0;
}
static void qeth_promisc_to_bridge(struct qeth_card *card)
@@ -603,9 +580,6 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
return;
QETH_CARD_TEXT(card, 3, "setmulti");
- if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
- (card->state != CARD_STATE_UP))
- return;
spin_lock_bh(&card->mclock);
@@ -959,12 +933,13 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
else
netif_carrier_off(dev);
+ netif_device_attach(dev);
qeth_enable_hw_features(dev);
if (recover_flag == CARD_STATE_RECOVER) {
if (recovery_mode && !IS_OSN(card)) {
if (!qeth_l2_validate_addr(dev)) {
- qeth_open_internal(dev);
+ qeth_open(dev);
qeth_l2_set_rx_mode(dev);
}
} else {
@@ -1011,7 +986,11 @@ static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
QETH_DBF_TEXT(SETUP, 3, "setoffl");
QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
+ rtnl_lock();
+ netif_device_detach(card->dev);
netif_carrier_off(card->dev);
+ rtnl_unlock();
+
recover_flag = card->state;
if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
@@ -1052,7 +1031,6 @@ static int qeth_l2_recover(void *ptr)
QETH_CARD_TEXT(card, 2, "recover2");
dev_warn(&card->gdev->dev,
"A recovery process has been started for the device\n");
- qeth_set_recovery_task(card);
__qeth_l2_set_offline(card->gdev, 1);
rc = __qeth_l2_set_online(card->gdev, 1);
if (!rc)
@@ -1063,7 +1041,6 @@ static int qeth_l2_recover(void *ptr)
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
}
- qeth_clear_recovery_task(card);
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
return 0;
@@ -1084,7 +1061,6 @@ static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
- netif_device_detach(card->dev);
qeth_set_allowed_threads(card, 0, 1);
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
if (gdev->state == CCWGROUP_OFFLINE)
@@ -1114,7 +1090,6 @@ static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
rc = __qeth_l2_set_online(card->gdev, 0);
qeth_set_allowed_threads(card, 0xffffffff, 0);
- netif_device_attach(card->dev);
if (rc)
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index e60d2c44d479..59535ecb1487 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1280,10 +1280,6 @@ static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
- if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
- QETH_CARD_TEXT(card, 3, "kidREC");
- return 0;
- }
clear_bit(vid, card->active_vlans);
qeth_l3_set_rx_mode(dev);
return 0;
@@ -1472,9 +1468,7 @@ static void qeth_l3_set_rx_mode(struct net_device *dev)
int i, rc;
QETH_CARD_TEXT(card, 3, "setmulti");
- if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
- (card->state != CARD_STATE_UP))
- return;
+
if (!card->options.sniffer) {
spin_lock_bh(&card->mclock);
@@ -2363,11 +2357,12 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
else
netif_carrier_off(dev);
+ netif_device_attach(dev);
qeth_enable_hw_features(dev);
if (recover_flag == CARD_STATE_RECOVER) {
if (recovery_mode) {
- qeth_open_internal(dev);
+ qeth_open(dev);
qeth_l3_set_rx_mode(dev);
} else {
dev_open(dev, NULL);
@@ -2413,7 +2408,11 @@ static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
QETH_DBF_TEXT(SETUP, 3, "setoffl");
QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
+ rtnl_lock();
+ netif_device_detach(card->dev);
netif_carrier_off(card->dev);
+ rtnl_unlock();
+
recover_flag = card->state;
if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
@@ -2460,7 +2459,6 @@ static int qeth_l3_recover(void *ptr)
QETH_CARD_TEXT(card, 2, "recover2");
dev_warn(&card->gdev->dev,
"A recovery process has been started for the device\n");
- qeth_set_recovery_task(card);
__qeth_l3_set_offline(card->gdev, 1);
rc = __qeth_l3_set_online(card->gdev, 1);
if (!rc)
@@ -2471,7 +2469,6 @@ static int qeth_l3_recover(void *ptr)
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
}
- qeth_clear_recovery_task(card);
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
return 0;
@@ -2481,7 +2478,6 @@ static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
- netif_device_detach(card->dev);
qeth_set_allowed_threads(card, 0, 1);
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
if (gdev->state == CCWGROUP_OFFLINE)
@@ -2511,7 +2507,6 @@ static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
rc = __qeth_l3_set_online(card->gdev, 0);
qeth_set_allowed_threads(card, 0xffffffff, 0);
- netif_device_attach(card->dev);
if (rc)
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.