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s390/qeth: clean up L3 sysfs code 

Consolidate some duplicated code for adding RXIP/VIPA addresses, and
move the locking to where it's actually needed.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2019-12-18 17:34:45 +01:00 committed by David S. Miller
parent e6b1b7da24
commit 2390166a6b
2 changed files with 33 additions and 85 deletions
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12
drivers/s390/net/qeth_l3_main.c
View File

@ -571,6 +571,7 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card,
QETH_CARD_TEXT(card, 2, "addipato");
mutex_lock(&card->conf_mutex);
mutex_lock(&card->ip_lock);
list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
@ -590,6 +591,7 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card,
}
mutex_unlock(&card->ip_lock);
mutex_unlock(&card->conf_mutex);
return rc;
}
@ -603,6 +605,7 @@ int qeth_l3_del_ipato_entry(struct qeth_card *card,
QETH_CARD_TEXT(card, 2, "delipato");
mutex_lock(&card->conf_mutex);
mutex_lock(&card->ip_lock);
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
@ -619,6 +622,8 @@ int qeth_l3_del_ipato_entry(struct qeth_card *card,
}
mutex_unlock(&card->ip_lock);
mutex_unlock(&card->conf_mutex);
return rc;
}
@ -627,6 +632,7 @@ int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
enum qeth_prot_versions proto)
{
struct qeth_ipaddr addr;
int rc;
qeth_l3_init_ipaddr(&addr, type, proto);
if (proto == QETH_PROT_IPV4)
@ -634,7 +640,11 @@ int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
else
memcpy(&addr.u.a6.addr, ip, 16);
return qeth_l3_modify_ip(card, &addr, add);
mutex_lock(&card->conf_mutex);
rc = qeth_l3_modify_ip(card, &addr, add);
mutex_unlock(&card->conf_mutex);
return rc;
}
int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)

106
drivers/s390/net/qeth_l3_sys.c
View File

@ -460,16 +460,14 @@ static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
int mask_bits;
int rc = 0;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
if (rc)
goto out;
return rc;
ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
if (!ipatoe) {
rc = -ENOMEM;
goto out;
}
if (!ipatoe)
return -ENOMEM;
ipatoe->proto = proto;
memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
ipatoe->mask_bits = mask_bits;
@ -477,8 +475,7 @@ static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
rc = qeth_l3_add_ipato_entry(card, ipatoe);
if (rc)
kfree(ipatoe);
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
@ -501,11 +498,9 @@ static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
int mask_bits;
int rc = 0;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
if (!rc)
rc = qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
@ -650,63 +645,34 @@ static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
QETH_IP_TYPE_VIPA);
}
static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
u8 *addr)
{
if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
return -EINVAL;
}
return 0;
}
static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
struct qeth_card *card, enum qeth_prot_versions proto)
static ssize_t qeth_l3_vipa_store(struct device *dev, const char *buf, bool add,
size_t count, enum qeth_prot_versions proto)
{
struct qeth_card *card = dev_get_drvdata(dev);
u8 addr[16] = {0, };
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_vipae(buf, proto, addr);
rc = qeth_l3_string_to_ipaddr(buf, proto, addr);
if (!rc)
rc = qeth_l3_modify_rxip_vipa(card, true, addr,
rc = qeth_l3_modify_rxip_vipa(card, add, addr,
QETH_IP_TYPE_VIPA, proto);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
return qeth_l3_vipa_store(dev, buf, true, count, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
qeth_l3_dev_vipa_add4_show,
qeth_l3_dev_vipa_add4_store);
static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
struct qeth_card *card, enum qeth_prot_versions proto)
{
u8 addr[16];
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_vipae(buf, proto, addr);
if (!rc)
rc = qeth_l3_modify_rxip_vipa(card, false, addr,
QETH_IP_TYPE_VIPA, proto);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
return qeth_l3_vipa_store(dev, buf, true, count, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
@ -723,9 +689,7 @@ static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
return qeth_l3_vipa_store(dev, buf, true, count, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
@ -735,9 +699,7 @@ static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
return qeth_l3_vipa_store(dev, buf, false, count, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
@ -790,54 +752,34 @@ static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
return 0;
}
static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
struct qeth_card *card, enum qeth_prot_versions proto)
static ssize_t qeth_l3_rxip_store(struct device *dev, const char *buf, bool add,
size_t count, enum qeth_prot_versions proto)
{
struct qeth_card *card = dev_get_drvdata(dev);
u8 addr[16] = {0, };
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_rxipe(buf, proto, addr);
if (!rc)
rc = qeth_l3_modify_rxip_vipa(card, true, addr,
rc = qeth_l3_modify_rxip_vipa(card, add, addr,
QETH_IP_TYPE_RXIP, proto);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
return qeth_l3_rxip_store(dev, buf, true, count, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
qeth_l3_dev_rxip_add4_show,
qeth_l3_dev_rxip_add4_store);
static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
struct qeth_card *card, enum qeth_prot_versions proto)
{
u8 addr[16];
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_rxipe(buf, proto, addr);
if (!rc)
rc = qeth_l3_modify_rxip_vipa(card, false, addr,
QETH_IP_TYPE_RXIP, proto);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
return qeth_l3_rxip_store(dev, buf, false, count, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
@ -854,9 +796,7 @@ static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
return qeth_l3_rxip_store(dev, buf, true, count, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
@ -866,9 +806,7 @@ static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
return qeth_l3_rxip_store(dev, buf, false, count, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,