diff options
Diffstat (limited to 'drivers/s390/net/qeth_core_sys.c')
| -rw-r--r-- | drivers/s390/net/qeth_core_sys.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c index 33505c2a0e3a..f2358a75ed0c 100644 --- a/drivers/s390/net/qeth_core_sys.c +++ b/drivers/s390/net/qeth_core_sys.c @@ -463,6 +463,82 @@ static ssize_t qeth_dev_large_send_store(struct device *dev, static DEVICE_ATTR(large_send, 0644, qeth_dev_large_send_show, qeth_dev_large_send_store); +#define ATTR_QETH_ISOLATION_NONE ("none") +#define ATTR_QETH_ISOLATION_FWD ("forward") +#define ATTR_QETH_ISOLATION_DROP ("drop") + +static ssize_t qeth_dev_isolation_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + + if (!card) + return -EINVAL; + + switch (card->options.isolation) { + case ISOLATION_MODE_NONE: + return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_NONE); + case ISOLATION_MODE_FWD: + return snprintf(buf, 9, "%s\n", ATTR_QETH_ISOLATION_FWD); + case ISOLATION_MODE_DROP: + return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_DROP); + default: + return snprintf(buf, 5, "%s\n", "N/A"); + } +} + +static ssize_t qeth_dev_isolation_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + enum qeth_ipa_isolation_modes isolation; + int rc = 0; + char *tmp, *curtoken; + curtoken = (char *) buf; + + if (!card) { + rc = -EINVAL; + goto out; + } + + /* check for unknown, too, in case we do not yet know who we are */ + if (card->info.type != QETH_CARD_TYPE_OSAE && + card->info.type != QETH_CARD_TYPE_UNKNOWN) { + rc = -EOPNOTSUPP; + dev_err(&card->gdev->dev, "Adapter does not " + "support QDIO data connection isolation\n"); + goto out; + } + + /* parse input into isolation mode */ + tmp = strsep(&curtoken, "\n"); + if (!strcmp(tmp, ATTR_QETH_ISOLATION_NONE)) { + isolation = ISOLATION_MODE_NONE; + } else if (!strcmp(tmp, ATTR_QETH_ISOLATION_FWD)) { + isolation = ISOLATION_MODE_FWD; + } else if (!strcmp(tmp, ATTR_QETH_ISOLATION_DROP)) { + isolation = ISOLATION_MODE_DROP; + } else { + rc = -EINVAL; + goto out; + } + rc = count; + + /* defer IP assist if device is offline (until discipline->set_online)*/ + card->options.isolation = isolation; + if (card->state == CARD_STATE_SOFTSETUP || + card->state == CARD_STATE_UP) { + int ipa_rc = qeth_set_access_ctrl_online(card); + if (ipa_rc != 0) + rc = ipa_rc; + } +out: + return rc; +} + +static DEVICE_ATTR(isolation, 0644, qeth_dev_isolation_show, + qeth_dev_isolation_store); + static ssize_t qeth_dev_blkt_show(char *buf, struct qeth_card *card, int value) { @@ -583,6 +659,7 @@ static struct attribute *qeth_device_attrs[] = { &dev_attr_performance_stats.attr, &dev_attr_layer2.attr, &dev_attr_large_send.attr, + &dev_attr_isolation.attr, NULL, }; |