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qeth: synchronize configuration interface

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Synchronize access to the drivers configuration interface.
Also do not allow configuration changes during online/offline
transition.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frank Blaschka
2010-05-11 19:34:47 +00:00
committed by David S. Miller
parent 65a1f898ef
commit c4949f0743
6 changed files with 243 additions and 169 deletions
Download Patch File Download Diff File Expand all files Collapse all files

244
drivers/s390/net/qeth_l3_sys.c
View File

@@ -70,10 +70,10 @@ static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
{
enum qeth_routing_types old_route_type = route->type;
char *tmp;
int rc;
int rc = 0;
tmp = strsep((char **) &buf, "\n");
mutex_lock(&card->conf_mutex);
if (!strcmp(tmp, "no_router")) {
route->type = NO_ROUTER;
} else if (!strcmp(tmp, "primary_connector")) {
@@ -87,7 +87,8 @@ static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
} else if (!strcmp(tmp, "multicast_router")) {
route->type = MULTICAST_ROUTER;
} else {
return -EINVAL;
rc = -EINVAL;
goto out;
}
if (((card->state == CARD_STATE_SOFTSETUP) ||
(card->state == CARD_STATE_UP)) &&
@@ -97,7 +98,9 @@ static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
else if (prot == QETH_PROT_IPV6)
rc = qeth_l3_setrouting_v6(card);
}
return count;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_route4_store(struct device *dev,
@@ -157,22 +160,26 @@ static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int i;
int i, rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
(card->state != CARD_STATE_RECOVER)) {
rc = -EPERM;
goto out;
}
i = simple_strtoul(buf, &tmp, 16);
if ((i == 0) || (i == 1))
card->options.fake_broadcast = i;
else {
return -EINVAL;
}
return count;
else
rc = -EINVAL;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
@@ -200,31 +207,35 @@ static ssize_t qeth_l3_dev_broadcast_mode_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
(card->state != CARD_STATE_RECOVER)) {
rc = -EPERM;
goto out;
}
if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
return -EINVAL;
rc = -EINVAL;
goto out;
}
tmp = strsep((char **) &buf, "\n");
if (!strcmp(tmp, "local")) {
if (!strcmp(tmp, "local"))
card->options.broadcast_mode = QETH_TR_BROADCAST_LOCAL;
return count;
} else if (!strcmp(tmp, "all_rings")) {
else if (!strcmp(tmp, "all_rings"))
card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
return count;
} else {
return -EINVAL;
}
return count;
else
rc = -EINVAL;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(broadcast_mode, 0644, qeth_l3_dev_broadcast_mode_show,
@@ -251,18 +262,22 @@ static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int i;
int i, rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
(card->state != CARD_STATE_RECOVER)) {
rc = -EPERM;
goto out;
}
if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
return -EINVAL;
rc = -EINVAL;
goto out;
}
i = simple_strtoul(buf, &tmp, 16);
@@ -270,10 +285,11 @@ static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev,
card->options.macaddr_mode = i?
QETH_TR_MACADDR_CANONICAL :
QETH_TR_MACADDR_NONCANONICAL;
else {
return -EINVAL;
}
return count;
else
rc = -EINVAL;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(canonical_macaddr, 0644, qeth_l3_dev_canonical_macaddr_show,
@@ -297,11 +313,12 @@ static ssize_t qeth_l3_dev_checksum_store(struct device *dev,
struct qeth_card *card = dev_get_drvdata(dev);
enum qeth_checksum_types csum_type;
char *tmp;
int rc;
int rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
tmp = strsep((char **) &buf, "\n");
if (!strcmp(tmp, "sw_checksumming"))
csum_type = SW_CHECKSUMMING;
@@ -309,13 +326,15 @@ static ssize_t qeth_l3_dev_checksum_store(struct device *dev,
csum_type = HW_CHECKSUMMING;
else if (!strcmp(tmp, "no_checksumming"))
csum_type = NO_CHECKSUMMING;
else
return -EINVAL;
else {
rc = -EINVAL;
goto out;
}
rc = qeth_l3_set_rx_csum(card, csum_type);
if (rc)
return rc;
return count;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(checksumming, 0644, qeth_l3_dev_checksum_show,
@@ -336,7 +355,7 @@ static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
int ret;
int rc = 0;
unsigned long i;
if (!card)
@@ -345,19 +364,24 @@ static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
if (card->info.type != QETH_CARD_TYPE_IQD)
return -EPERM;
mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
(card->state != CARD_STATE_RECOVER)) {
rc = -EPERM;
goto out;
}
ret = strict_strtoul(buf, 16, &i);
if (ret)
return -EINVAL;
rc = strict_strtoul(buf, 16, &i);
if (rc) {
rc = -EINVAL;
goto out;
}
switch (i) {
case 0:
card->options.sniffer = i;
break;
case 1:
ret = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
card->options.sniffer = i;
if (card->qdio.init_pool.buf_count !=
@@ -366,11 +390,13 @@ static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
QETH_IN_BUF_COUNT_MAX);
break;
} else
return -EPERM;
rc = -EPERM;
default: /* fall through */
return -EINVAL;
rc = -EINVAL;
}
return count;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
@@ -412,12 +438,11 @@ static ssize_t qeth_l3_dev_large_send_store(struct device *dev,
else
return -EINVAL;
if (card->options.large_send == type)
return count;
rc = qeth_l3_set_large_send(card, type);
if (rc)
return rc;
return count;
mutex_lock(&card->conf_mutex);
if (card->options.large_send != type)
rc = qeth_l3_set_large_send(card, type);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(large_send, 0644, qeth_l3_dev_large_send_show,
@@ -455,13 +480,17 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
(card->state != CARD_STATE_RECOVER)) {
rc = -EPERM;
goto out;
}
tmp = strsep((char **) &buf, "\n");
if (!strcmp(tmp, "toggle")) {
@@ -470,10 +499,11 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
card->ipato.enabled = 1;
} else if (!strcmp(tmp, "0")) {
card->ipato.enabled = 0;
} else {
return -EINVAL;
}
return count;
} else
rc = -EINVAL;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
@@ -497,10 +527,12 @@ static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
tmp = strsep((char **) &buf, "\n");
if (!strcmp(tmp, "toggle")) {
card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
@@ -508,10 +540,10 @@ static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
card->ipato.invert4 = 1;
} else if (!strcmp(tmp, "0")) {
card->ipato.invert4 = 0;
} else {
return -EINVAL;
}
return count;
} else
rc = -EINVAL;
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
@@ -593,27 +625,28 @@ static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
struct qeth_ipato_entry *ipatoe;
u8 addr[16];
int mask_bits;
int rc;
int rc = 0;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
if (rc)
return rc;
goto out;
ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
if (!ipatoe) {
return -ENOMEM;
rc = -ENOMEM;
goto out;
}
ipatoe->proto = proto;
memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
ipatoe->mask_bits = mask_bits;
rc = qeth_l3_add_ipato_entry(card, ipatoe);
if (rc) {
if (rc)
kfree(ipatoe);
return rc;
}
return count;
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
@@ -636,15 +669,14 @@ static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
{
u8 addr[16];
int mask_bits;
int rc;
int rc = 0;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
if (rc)
return rc;
qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
return count;
if (!rc)
qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
@@ -677,10 +709,12 @@ static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
tmp = strsep((char **) &buf, "\n");
if (!strcmp(tmp, "toggle")) {
card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
@@ -688,10 +722,10 @@ static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
card->ipato.invert6 = 1;
} else if (!strcmp(tmp, "0")) {
card->ipato.invert6 = 0;
} else {
return -EINVAL;
}
return count;
} else
rc = -EINVAL;
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
@@ -813,15 +847,12 @@ static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
u8 addr[16] = {0, };
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_vipae(buf, proto, addr);
if (rc)
return rc;
rc = qeth_l3_add_vipa(card, proto, addr);
if (rc)
return rc;
return count;
if (!rc)
rc = qeth_l3_add_vipa(card, proto, addr);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
@@ -845,13 +876,12 @@ static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
u8 addr[16];
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_vipae(buf, proto, addr);
if (rc)
return rc;
qeth_l3_del_vipa(card, proto, addr);
return count;
if (!rc)
qeth_l3_del_vipa(card, proto, addr);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
@@ -979,15 +1009,12 @@ static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
u8 addr[16] = {0, };
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_rxipe(buf, proto, addr);
if (rc)
return rc;
rc = qeth_l3_add_rxip(card, proto, addr);
if (rc)
return rc;
return count;
if (!rc)
rc = qeth_l3_add_rxip(card, proto, addr);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
@@ -1011,13 +1038,12 @@ static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
u8 addr[16];
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_rxipe(buf, proto, addr);
if (rc)
return rc;
qeth_l3_del_rxip(card, proto, addr);
return count;
if (!rc)
qeth_l3_del_rxip(card, proto, addr);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,