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-rw-r--r--drivers/s390/net/qeth_core.h1
-rw-r--r--drivers/s390/net/qeth_core_main.c29
-rw-r--r--drivers/s390/net/qeth_l2_main.c3
-rw-r--r--drivers/s390/net/qeth_l3_main.c1
4 files changed, 34 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index bf40063de202..6d4b68c483f3 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -999,6 +999,7 @@ struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
__u16, __u16,
enum qeth_prot_versions);
int qeth_set_features(struct net_device *, netdev_features_t);
+int qeth_recover_features(struct net_device *);
netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
/* exports for OSN */
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 7dba6c8537a1..6ad5a14669e7 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -6131,6 +6131,35 @@ static int qeth_set_ipa_tso(struct qeth_card *card, int on)
return rc;
}
+/* try to restore device features on a device after recovery */
+int qeth_recover_features(struct net_device *dev)
+{
+ struct qeth_card *card = dev->ml_priv;
+ netdev_features_t recover = dev->features;
+
+ if (recover & NETIF_F_IP_CSUM) {
+ if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
+ recover ^= NETIF_F_IP_CSUM;
+ }
+ if (recover & NETIF_F_RXCSUM) {
+ if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
+ recover ^= NETIF_F_RXCSUM;
+ }
+ if (recover & NETIF_F_TSO) {
+ if (qeth_set_ipa_tso(card, 1))
+ recover ^= NETIF_F_TSO;
+ }
+
+ if (recover == dev->features)
+ return 0;
+
+ dev_warn(&card->gdev->dev,
+ "Device recovery failed to restore all offload features\n");
+ dev->features = recover;
+ return -EIO;
+}
+EXPORT_SYMBOL_GPL(qeth_recover_features);
+
int qeth_set_features(struct net_device *dev, netdev_features_t features)
{
struct qeth_card *card = dev->ml_priv;
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 7bc20c5188bc..54fd89110ac7 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1246,6 +1246,9 @@ contin:
}
/* this also sets saved unicast addresses */
qeth_l2_set_rx_mode(card->dev);
+ rtnl_lock();
+ qeth_recover_features(card->dev);
+ rtnl_unlock();
}
/* let user_space know that device is online */
kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 72934666fedf..2f512715403b 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -3269,6 +3269,7 @@ contin:
else
dev_open(card->dev);
qeth_l3_set_multicast_list(card->dev);
+ qeth_recover_features(card->dev);
rtnl_unlock();
}
qeth_trace_features(card);