android_kernel_xiaomi_sm8350/drivers/s390/net/qeth_l3_sys.c
Julian Wiedmann 13dc49dae8 s390/qeth: lock the card while changing its hsuid
[ Upstream commit 5b6c7b55cfe26224b0f41b1c226d3534c542787f ]

qeth_l3_dev_hsuid_store() initially checks the card state, but doesn't
take the conf_mutex to ensure that the card stays in this state while
being reconfigured.

Rework the code to take this lock, and drop a redundant state check in a
helper function.

Fixes: b333293058 ("qeth: add support for af_iucv HiperSockets transport")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-17 19:49:06 +01:00

1020 lines
25 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright IBM Corp. 2007
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
* Frank Pavlic <fpavlic@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
* Frank Blaschka <frank.blaschka@de.ibm.com>
*/
#include <linux/slab.h>
#include <asm/ebcdic.h>
#include <linux/hashtable.h>
#include <linux/inet.h>
#include "qeth_l3.h"
#define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
static int qeth_l3_string_to_ipaddr(const char *buf,
enum qeth_prot_versions proto, u8 *addr)
{
const char *end;
if ((proto == QETH_PROT_IPV4 && !in4_pton(buf, -1, addr, -1, &end)) ||
(proto == QETH_PROT_IPV6 && !in6_pton(buf, -1, addr, -1, &end)))
return -EINVAL;
return 0;
}
static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
struct qeth_routing_info *route, char *buf)
{
switch (route->type) {
case PRIMARY_ROUTER:
return sprintf(buf, "%s\n", "primary router");
case SECONDARY_ROUTER:
return sprintf(buf, "%s\n", "secondary router");
case MULTICAST_ROUTER:
if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
return sprintf(buf, "%s\n", "multicast router+");
else
return sprintf(buf, "%s\n", "multicast router");
case PRIMARY_CONNECTOR:
if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
return sprintf(buf, "%s\n", "primary connector+");
else
return sprintf(buf, "%s\n", "primary connector");
case SECONDARY_CONNECTOR:
if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
return sprintf(buf, "%s\n", "secondary connector+");
else
return sprintf(buf, "%s\n", "secondary connector");
default:
return sprintf(buf, "%s\n", "no");
}
}
static ssize_t qeth_l3_dev_route4_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_route_show(card, &card->options.route4, buf);
}
static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
struct qeth_routing_info *route, enum qeth_prot_versions prot,
const char *buf, size_t count)
{
enum qeth_routing_types old_route_type = route->type;
int rc = 0;
mutex_lock(&card->conf_mutex);
if (sysfs_streq(buf, "no_router")) {
route->type = NO_ROUTER;
} else if (sysfs_streq(buf, "primary_connector")) {
route->type = PRIMARY_CONNECTOR;
} else if (sysfs_streq(buf, "secondary_connector")) {
route->type = SECONDARY_CONNECTOR;
} else if (sysfs_streq(buf, "primary_router")) {
route->type = PRIMARY_ROUTER;
} else if (sysfs_streq(buf, "secondary_router")) {
route->type = SECONDARY_ROUTER;
} else if (sysfs_streq(buf, "multicast_router")) {
route->type = MULTICAST_ROUTER;
} else {
rc = -EINVAL;
goto out;
}
if (qeth_card_hw_is_reachable(card) &&
(old_route_type != route->type)) {
if (prot == QETH_PROT_IPV4)
rc = qeth_l3_setrouting_v4(card);
else if (prot == QETH_PROT_IPV6)
rc = qeth_l3_setrouting_v6(card);
}
out:
if (rc)
route->type = old_route_type;
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_route4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_route_store(card, &card->options.route4,
QETH_PROT_IPV4, buf, count);
}
static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
qeth_l3_dev_route4_store);
static ssize_t qeth_l3_dev_route6_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_route_show(card, &card->options.route6, buf);
}
static ssize_t qeth_l3_dev_route6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_route_store(card, &card->options.route6,
QETH_PROT_IPV6, buf, count);
}
static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
qeth_l3_dev_route6_store);
static ssize_t qeth_l3_dev_fake_broadcast_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
}
static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int i, rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
if (card->state != CARD_STATE_DOWN) {
rc = -EPERM;
goto out;
}
i = simple_strtoul(buf, &tmp, 16);
if ((i == 0) || (i == 1))
card->options.fake_broadcast = i;
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,
qeth_l3_dev_fake_broadcast_store);
static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
}
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 rc = 0;
unsigned long i;
if (!card)
return -EINVAL;
if (!IS_IQD(card))
return -EPERM;
if (card->options.cq == QETH_CQ_ENABLED)
return -EPERM;
mutex_lock(&card->conf_mutex);
if (card->state != CARD_STATE_DOWN) {
rc = -EPERM;
goto out;
}
rc = kstrtoul(buf, 16, &i);
if (rc) {
rc = -EINVAL;
goto out;
}
switch (i) {
case 0:
card->options.sniffer = i;
break;
case 1:
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 !=
QETH_IN_BUF_COUNT_MAX)
qeth_realloc_buffer_pool(card,
QETH_IN_BUF_COUNT_MAX);
} else
rc = -EPERM;
break;
default:
rc = -EINVAL;
}
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
qeth_l3_dev_sniffer_store);
static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
char tmp_hsuid[9];
if (!card)
return -EINVAL;
if (!IS_IQD(card))
return -EPERM;
memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
EBCASC(tmp_hsuid, 8);
return sprintf(buf, "%s\n", tmp_hsuid);
}
static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
int rc = 0;
char *tmp;
if (!card)
return -EINVAL;
if (!IS_IQD(card))
return -EPERM;
mutex_lock(&card->conf_mutex);
if (card->state != CARD_STATE_DOWN) {
rc = -EPERM;
goto out;
}
if (card->options.sniffer) {
rc = -EPERM;
goto out;
}
if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
rc = -EPERM;
goto out;
}
tmp = strsep((char **)&buf, "\n");
if (strlen(tmp) > 8) {
rc = -EINVAL;
goto out;
}
if (card->options.hsuid[0])
/* delete old ip address */
qeth_l3_modify_hsuid(card, false);
if (strlen(tmp) == 0) {
/* delete ip address only */
card->options.hsuid[0] = '\0';
memcpy(card->dev->perm_addr, card->options.hsuid, 9);
qeth_configure_cq(card, QETH_CQ_DISABLED);
goto out;
}
if (qeth_configure_cq(card, QETH_CQ_ENABLED)) {
rc = -EPERM;
goto out;
}
snprintf(card->options.hsuid, sizeof(card->options.hsuid),
"%-8s", tmp);
ASCEBC(card->options.hsuid, 8);
memcpy(card->dev->perm_addr, card->options.hsuid, 9);
rc = qeth_l3_modify_hsuid(card, true);
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
qeth_l3_dev_hsuid_store);
static struct attribute *qeth_l3_device_attrs[] = {
&dev_attr_route4.attr,
&dev_attr_route6.attr,
&dev_attr_fake_broadcast.attr,
&dev_attr_sniffer.attr,
&dev_attr_hsuid.attr,
NULL,
};
static const struct attribute_group qeth_l3_device_attr_group = {
.attrs = qeth_l3_device_attrs,
};
static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
}
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);
bool enable;
int rc = 0;
if (!card)
return -EINVAL;
mutex_lock(&card->conf_mutex);
if (card->state != CARD_STATE_DOWN) {
rc = -EPERM;
goto out;
}
if (sysfs_streq(buf, "toggle")) {
enable = !card->ipato.enabled;
} else if (kstrtobool(buf, &enable)) {
rc = -EINVAL;
goto out;
}
if (card->ipato.enabled != enable) {
card->ipato.enabled = enable;
mutex_lock(&card->ip_lock);
qeth_l3_update_ipato(card);
mutex_unlock(&card->ip_lock);
}
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
qeth_l3_dev_ipato_enable_show,
qeth_l3_dev_ipato_enable_store);
static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
}
static ssize_t qeth_l3_dev_ipato_invert4_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")) {
invert = !card->ipato.invert4;
} else if (kstrtobool(buf, &invert)) {
rc = -EINVAL;
goto out;
}
if (card->ipato.invert4 != invert) {
card->ipato.invert4 = invert;
mutex_lock(&card->ip_lock);
qeth_l3_update_ipato(card);
mutex_unlock(&card->ip_lock);
}
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
qeth_l3_dev_ipato_invert4_show,
qeth_l3_dev_ipato_invert4_store);
static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
enum qeth_prot_versions proto)
{
struct qeth_ipato_entry *ipatoe;
char addr_str[40];
int entry_len; /* length of 1 entry string, differs between v4 and v6 */
int i = 0;
entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
/* add strlen for "/<mask>\n" */
entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
mutex_lock(&card->ip_lock);
list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
if (ipatoe->proto != proto)
continue;
/* String must not be longer than PAGE_SIZE. So we check if
* string length gets near PAGE_SIZE. Then we can savely display
* the next IPv6 address (worst case, compared to IPv4) */
if ((PAGE_SIZE - i) <= entry_len)
break;
qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
i += snprintf(buf + i, PAGE_SIZE - i,
"%s/%i\n", addr_str, ipatoe->mask_bits);
}
mutex_unlock(&card->ip_lock);
i += snprintf(buf + i, PAGE_SIZE - i, "\n");
return i;
}
static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
}
static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
u8 *addr, int *mask_bits)
{
const char *start, *end;
char *tmp;
char buffer[40] = {0, };
start = buf;
/* get address string */
end = strchr(start, '/');
if (!end || (end - start >= 40)) {
return -EINVAL;
}
strncpy(buffer, start, end - start);
if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
return -EINVAL;
}
start = end + 1;
*mask_bits = simple_strtoul(start, &tmp, 10);
if (!strlen(start) ||
(tmp == start) ||
(*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
return -EINVAL;
}
return 0;
}
static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
struct qeth_card *card, enum qeth_prot_versions proto)
{
struct qeth_ipato_entry *ipatoe;
u8 addr[16];
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;
ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
if (!ipatoe) {
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)
kfree(ipatoe);
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
qeth_l3_dev_ipato_add4_show,
qeth_l3_dev_ipato_add4_store);
static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
struct qeth_card *card, enum qeth_prot_versions proto)
{
u8 addr[16];
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;
}
static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
qeth_l3_dev_ipato_del4_store);
static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
}
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")) {
invert = !card->ipato.invert6;
} else if (kstrtobool(buf, &invert)) {
rc = -EINVAL;
goto out;
}
if (card->ipato.invert6 != invert) {
card->ipato.invert6 = invert;
mutex_lock(&card->ip_lock);
qeth_l3_update_ipato(card);
mutex_unlock(&card->ip_lock);
}
out:
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
qeth_l3_dev_ipato_invert6_show,
qeth_l3_dev_ipato_invert6_store);
static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
}
static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
qeth_l3_dev_ipato_add6_show,
qeth_l3_dev_ipato_add6_store);
static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
if (!card)
return -EINVAL;
return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
qeth_l3_dev_ipato_del6_store);
static struct attribute *qeth_ipato_device_attrs[] = {
&dev_attr_ipato_enable.attr,
&dev_attr_ipato_invert4.attr,
&dev_attr_ipato_add4.attr,
&dev_attr_ipato_del4.attr,
&dev_attr_ipato_invert6.attr,
&dev_attr_ipato_add6.attr,
&dev_attr_ipato_del6.attr,
NULL,
};
static const struct attribute_group qeth_device_ipato_group = {
.name = "ipa_takeover",
.attrs = qeth_ipato_device_attrs,
};
static ssize_t qeth_l3_dev_ip_add_show(struct device *dev, char *buf,
enum qeth_prot_versions proto,
enum qeth_ip_types type)
{
struct qeth_card *card = dev_get_drvdata(dev);
struct qeth_ipaddr *ipaddr;
char addr_str[40];
int str_len = 0;
int entry_len; /* length of 1 entry string, differs between v4 and v6 */
int i;
if (!card)
return -EINVAL;
entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
entry_len += 2; /* \n + terminator */
mutex_lock(&card->ip_lock);
hash_for_each(card->ip_htable, i, ipaddr, hnode) {
if (ipaddr->proto != proto || ipaddr->type != type)
continue;
/* String must not be longer than PAGE_SIZE. So we check if
* string length gets near PAGE_SIZE. Then we can savely display
* the next IPv6 address (worst case, compared to IPv4) */
if ((PAGE_SIZE - str_len) <= entry_len)
break;
qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
addr_str);
str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",
addr_str);
}
mutex_unlock(&card->ip_lock);
str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");
return str_len;
}
static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV4,
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)
{
u8 addr[16] = {0, };
int rc;
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_vipae(buf, proto, addr);
if (!rc)
rc = qeth_l3_modify_rxip_vipa(card, true, 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);
if (!card)
return -EINVAL;
return qeth_l3_dev_vipa_add_store(buf, count, card, 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);
if (!card)
return -EINVAL;
return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
qeth_l3_dev_vipa_del4_store);
static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV6,
QETH_IP_TYPE_VIPA);
}
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);
if (!card)
return -EINVAL;
return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
qeth_l3_dev_vipa_add6_show,
qeth_l3_dev_vipa_add6_store);
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);
if (!card)
return -EINVAL;
return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
qeth_l3_dev_vipa_del6_store);
static struct attribute *qeth_vipa_device_attrs[] = {
&dev_attr_vipa_add4.attr,
&dev_attr_vipa_del4.attr,
&dev_attr_vipa_add6.attr,
&dev_attr_vipa_del6.attr,
NULL,
};
static const struct attribute_group qeth_device_vipa_group = {
.name = "vipa",
.attrs = qeth_vipa_device_attrs,
};
static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV4,
QETH_IP_TYPE_RXIP);
}
static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
u8 *addr)
{
__be32 ipv4_addr;
struct in6_addr ipv6_addr;
if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
return -EINVAL;
}
if (proto == QETH_PROT_IPV4) {
memcpy(&ipv4_addr, addr, sizeof(ipv4_addr));
if (ipv4_is_multicast(ipv4_addr)) {
QETH_DBF_MESSAGE(2, "multicast rxip not supported.\n");
return -EINVAL;
}
} else if (proto == QETH_PROT_IPV6) {
memcpy(&ipv6_addr, addr, sizeof(ipv6_addr));
if (ipv6_addr_is_multicast(&ipv6_addr)) {
QETH_DBF_MESSAGE(2, "multicast rxip not supported.\n");
return -EINVAL;
}
}
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)
{
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,
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);
if (!card)
return -EINVAL;
return qeth_l3_dev_rxip_add_store(buf, count, card, 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);
if (!card)
return -EINVAL;
return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
}
static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
qeth_l3_dev_rxip_del4_store);
static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV6,
QETH_IP_TYPE_RXIP);
}
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);
if (!card)
return -EINVAL;
return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
qeth_l3_dev_rxip_add6_show,
qeth_l3_dev_rxip_add6_store);
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);
if (!card)
return -EINVAL;
return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
}
static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
qeth_l3_dev_rxip_del6_store);
static struct attribute *qeth_rxip_device_attrs[] = {
&dev_attr_rxip_add4.attr,
&dev_attr_rxip_del4.attr,
&dev_attr_rxip_add6.attr,
&dev_attr_rxip_del6.attr,
NULL,
};
static const struct attribute_group qeth_device_rxip_group = {
.name = "rxip",
.attrs = qeth_rxip_device_attrs,
};
static const struct attribute_group *qeth_l3_only_attr_groups[] = {
&qeth_l3_device_attr_group,
&qeth_device_ipato_group,
&qeth_device_vipa_group,
&qeth_device_rxip_group,
NULL,
};
int qeth_l3_create_device_attributes(struct device *dev)
{
return sysfs_create_groups(&dev->kobj, qeth_l3_only_attr_groups);
}
void qeth_l3_remove_device_attributes(struct device *dev)
{
sysfs_remove_groups(&dev->kobj, qeth_l3_only_attr_groups);
}
const struct attribute_group *qeth_l3_attr_groups[] = {
&qeth_device_attr_group,
&qeth_device_blkt_group,
/* l3 specific, see qeth_l3_only_attr_groups: */
&qeth_l3_device_attr_group,
&qeth_device_ipato_group,
&qeth_device_vipa_group,
&qeth_device_rxip_group,
NULL,
};