diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index bf40063de202ff8280ce7503f103ce3c5db349b9..6d4b68c483f3dffed55d4f8508564d6a2bf9bef2 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 7dba6c8537a16c18e550f311361b3bdf6231bd38..6ad5a14669e7978105eaddd1278f08a841ea00ff 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 7bc20c5188bc67f32a2f5ace493a5827d216c8e6..54fd89110ac78170e82f85c4a8197917bdaa3b3b 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -1246,6 +1246,9 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) } /* 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 72934666fedf0193bef37fcc5378127ed2a540c7..2f512715403b0fd4cc236df4f5eaef2ea894a10a 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -3269,6 +3269,7 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) else dev_open(card->dev); qeth_l3_set_multicast_list(card->dev); + qeth_recover_features(card->dev); rtnl_unlock(); } qeth_trace_features(card);