From 02f510f326501470348a5df341e8232c3497bbbb Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Wed, 13 Dec 2017 18:56:32 +0100 Subject: s390/qeth: update takeover IPs after configuration change Any modification to the takeover IP-ranges requires that we re-evaluate which IP addresses are takeover-eligible. Otherwise we might do takeover for some addresses when we no longer should, or vice-versa. Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller --- drivers/s390/net/qeth_l3_sys.c | 63 +++++++++++++++++++++++------------------- 1 file changed, 34 insertions(+), 29 deletions(-) (limited to 'drivers/s390/net/qeth_l3_sys.c') diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c index aa676b4090da..6ea2b528a64e 100644 --- a/drivers/s390/net/qeth_l3_sys.c +++ b/drivers/s390/net/qeth_l3_sys.c @@ -370,9 +370,8 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct qeth_card *card = dev_get_drvdata(dev); - struct qeth_ipaddr *addr; - int i, rc = 0; bool enable; + int rc = 0; if (!card) return -EINVAL; @@ -391,20 +390,12 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev, goto out; } - if (card->ipato.enabled == enable) - goto out; - card->ipato.enabled = enable; - - spin_lock_bh(&card->ip_lock); - hash_for_each(card->ip_htable, i, addr, hnode) { - if (addr->type != QETH_IP_TYPE_NORMAL) - continue; - if (!enable) - addr->set_flags &= ~QETH_IPA_SETIP_TAKEOVER_FLAG; - else if (qeth_l3_is_addr_covered_by_ipato(card, addr)) - addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG; + if (card->ipato.enabled != enable) { + card->ipato.enabled = enable; + spin_lock_bh(&card->ip_lock); + qeth_l3_update_ipato(card); + spin_unlock_bh(&card->ip_lock); } - spin_unlock_bh(&card->ip_lock); out: mutex_unlock(&card->conf_mutex); return rc ? rc : count; @@ -430,20 +421,27 @@ static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev, const char *buf, size_t count) { struct qeth_card *card = dev_get_drvdata(dev); + bool invert; int rc = 0; if (!card) return -EINVAL; mutex_lock(&card->conf_mutex); - if (sysfs_streq(buf, "toggle")) - card->ipato.invert4 = (card->ipato.invert4)? 0 : 1; - else if (sysfs_streq(buf, "1")) - card->ipato.invert4 = 1; - else if (sysfs_streq(buf, "0")) - card->ipato.invert4 = 0; - else + if (sysfs_streq(buf, "toggle")) { + invert = !card->ipato.invert4; + } else if (kstrtobool(buf, &invert)) { rc = -EINVAL; + goto out; + } + + if (card->ipato.invert4 != invert) { + card->ipato.invert4 = invert; + spin_lock_bh(&card->ip_lock); + qeth_l3_update_ipato(card); + spin_unlock_bh(&card->ip_lock); + } +out: mutex_unlock(&card->conf_mutex); return rc ? rc : count; } @@ -609,20 +607,27 @@ static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct qeth_card *card = dev_get_drvdata(dev); + bool invert; int rc = 0; if (!card) return -EINVAL; mutex_lock(&card->conf_mutex); - if (sysfs_streq(buf, "toggle")) - card->ipato.invert6 = (card->ipato.invert6)? 0 : 1; - else if (sysfs_streq(buf, "1")) - card->ipato.invert6 = 1; - else if (sysfs_streq(buf, "0")) - card->ipato.invert6 = 0; - else + if (sysfs_streq(buf, "toggle")) { + invert = !card->ipato.invert6; + } else if (kstrtobool(buf, &invert)) { rc = -EINVAL; + goto out; + } + + if (card->ipato.invert6 != invert) { + card->ipato.invert6 = invert; + spin_lock_bh(&card->ip_lock); + qeth_l3_update_ipato(card); + spin_unlock_bh(&card->ip_lock); + } +out: mutex_unlock(&card->conf_mutex); return rc ? rc : count; } -- cgit