From: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Date: Wed, 27 Dec 2017 17:44:28 +0100
Subject: [PATCH] s390/qeth: improve error reporting on IP add/removal
Patch-mainline: v4.16-rc1
Git-commit: b9ea5250121443a8a4832263ec5f0e77f7bc9d0b
References: bsc#1085486
When adding & removing IP entries for rxip/vipa/ipato/hsuid, forward any
resulting errors back to the sysfs-level caller.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/s390/net/qeth_l3.h | 12 +++++++-----
drivers/s390/net/qeth_l3_main.c | 36 ++++++++++++++++++++++--------------
drivers/s390/net/qeth_l3_sys.c | 12 ++++++------
3 files changed, 35 insertions(+), 25 deletions(-)
diff --git a/drivers/s390/net/qeth_l3.h b/drivers/s390/net/qeth_l3.h
index 49f92ebbc5ad..bdd45f4dcace 100644
--- a/drivers/s390/net/qeth_l3.h
+++ b/drivers/s390/net/qeth_l3.h
@@ -74,13 +74,15 @@ void qeth_l3_remove_device_attributes(struct device *);
int qeth_l3_setrouting_v4(struct qeth_card *);
int qeth_l3_setrouting_v6(struct qeth_card *);
int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
-void qeth_l3_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions,
- u8 *, int);
+int qeth_l3_del_ipato_entry(struct qeth_card *card,
+ enum qeth_prot_versions proto, u8 *addr,
+ int mask_bits);
int qeth_l3_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
-void qeth_l3_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
+int qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr);
int qeth_l3_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
-void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions,
- const u8 *);
+int qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr);
void qeth_l3_update_ipato(struct qeth_card *card);
struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions);
int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 92bcb02671bc..b0c888e86cd4 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -588,10 +588,12 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card,
return rc;
}
-void qeth_l3_del_ipato_entry(struct qeth_card *card,
- enum qeth_prot_versions proto, u8 *addr, int mask_bits)
+int qeth_l3_del_ipato_entry(struct qeth_card *card,
+ enum qeth_prot_versions proto, u8 *addr,
+ int mask_bits)
{
struct qeth_ipato_entry *ipatoe, *tmp;
+ int rc = -ENOENT;
QETH_CARD_TEXT(card, 2, "delipato");
@@ -606,10 +608,12 @@ void qeth_l3_del_ipato_entry(struct qeth_card *card,
list_del(&ipatoe->entry);
qeth_l3_update_ipato(card);
kfree(ipatoe);
+ rc = 0;
}
}
spin_unlock_bh(&card->ip_lock);
+ return rc;
}
/*
@@ -619,7 +623,7 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
- int rc = 0;
+ int rc;
ipaddr = qeth_l3_get_addr_buffer(proto);
if (ipaddr) {
@@ -643,7 +647,7 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
if (qeth_l3_ip_from_hash(card, ipaddr))
rc = -EEXIST;
else
- qeth_l3_add_ip(card, ipaddr);
+ rc = qeth_l3_add_ip(card, ipaddr);
spin_unlock_bh(&card->ip_lock);
@@ -652,10 +656,11 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
return rc;
}
-void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
- const u8 *addr)
+int qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
+ int rc;
ipaddr = qeth_l3_get_addr_buffer(proto);
if (ipaddr) {
@@ -670,13 +675,14 @@ void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
}
ipaddr->type = QETH_IP_TYPE_VIPA;
} else
- return;
+ return -ENOMEM;
spin_lock_bh(&card->ip_lock);
- qeth_l3_delete_ip(card, ipaddr);
+ rc = qeth_l3_delete_ip(card, ipaddr);
spin_unlock_bh(&card->ip_lock);
kfree(ipaddr);
+ return rc;
}
/*
@@ -686,7 +692,7 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
- int rc = 0;
+ int rc;
ipaddr = qeth_l3_get_addr_buffer(proto);
if (ipaddr) {
@@ -711,7 +717,7 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
if (qeth_l3_ip_from_hash(card, ipaddr))
rc = -EEXIST;
else
- qeth_l3_add_ip(card, ipaddr);
+ rc = qeth_l3_add_ip(card, ipaddr);
spin_unlock_bh(&card->ip_lock);
@@ -720,10 +726,11 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
return rc;
}
-void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
- const u8 *addr)
+int qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
+ const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
+ int rc;
ipaddr = qeth_l3_get_addr_buffer(proto);
if (ipaddr) {
@@ -738,13 +745,14 @@ void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
}
ipaddr->type = QETH_IP_TYPE_RXIP;
} else
- return;
+ return -ENOMEM;
spin_lock_bh(&card->ip_lock);
- qeth_l3_delete_ip(card, ipaddr);
+ rc = qeth_l3_delete_ip(card, ipaddr);
spin_unlock_bh(&card->ip_lock);
kfree(ipaddr);
+ return rc;
}
static int qeth_l3_register_addr_entry(struct qeth_card *card,
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index 00a10b66c01f..f8e74b384980 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -274,7 +274,7 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
struct qeth_card *card = dev_get_drvdata(dev);
struct qeth_ipaddr *addr;
char *tmp;
- int i;
+ int rc, i;
if (!card)
return -EINVAL;
@@ -343,11 +343,11 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
return -ENOMEM;
spin_lock_bh(&card->ip_lock);
- qeth_l3_add_ip(card, addr);
+ rc = qeth_l3_add_ip(card, addr);
spin_unlock_bh(&card->ip_lock);
kfree(addr);
- return count;
+ return rc ? rc : count;
}
static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
@@ -585,7 +585,7 @@ static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
if (!rc)
- qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
+ rc = qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
@@ -796,7 +796,7 @@ static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_vipae(buf, proto, addr);
if (!rc)
- qeth_l3_del_vipa(card, proto, addr);
+ rc = qeth_l3_del_vipa(card, proto, addr);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
@@ -976,7 +976,7 @@ static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
mutex_lock(&card->conf_mutex);
rc = qeth_l3_parse_rxipe(buf, proto, addr);
if (!rc)
- qeth_l3_del_rxip(card, proto, addr);
+ rc = qeth_l3_del_rxip(card, proto, addr);
mutex_unlock(&card->conf_mutex);
return rc ? rc : count;
}
--
2.12.3