| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 28 Feb 2020 18:01:35 +0000
From: Taehee Yoo <ap420073@...il.com>
To: davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org
Cc: ap420073@...il.com
Subject: [PATCH net-next 2/5] hsr: use extack error message instead of netdev_info
If HSR uses the extack instead of netdev_info(), users can get
error messages immediately without any checking the kernel message.
Signed-off-by: Taehee Yoo <ap420073@...il.com>
---
net/hsr/hsr_device.c | 9 +++++----
net/hsr/hsr_device.h | 3 ++-
net/hsr/hsr_netlink.c | 22 +++++++++++++++-------
net/hsr/hsr_slave.c | 20 ++++++++++++--------
net/hsr/hsr_slave.h | 2 +-
5 files changed, 35 insertions(+), 21 deletions(-)
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index c7bd6c49fadf..a48f621c2fec 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -431,7 +431,8 @@ static const unsigned char def_multicast_addr[ETH_ALEN] __aligned(2) = {
};
int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
- unsigned char multicast_spec, u8 protocol_version)
+ unsigned char multicast_spec, u8 protocol_version,
+ struct netlink_ext_ack *extack)
{
struct hsr_priv *hsr;
struct hsr_port *port;
@@ -478,7 +479,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
/* Make sure the 1st call to netif_carrier_on() gets through */
netif_carrier_off(hsr_dev);
- res = hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER);
+ res = hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER, extack);
if (res)
goto err_add_master;
@@ -486,11 +487,11 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
if (res)
goto err_unregister;
- res = hsr_add_port(hsr, slave[0], HSR_PT_SLAVE_A);
+ res = hsr_add_port(hsr, slave[0], HSR_PT_SLAVE_A, extack);
if (res)
goto err_add_slaves;
- res = hsr_add_port(hsr, slave[1], HSR_PT_SLAVE_B);
+ res = hsr_add_port(hsr, slave[1], HSR_PT_SLAVE_B, extack);
if (res)
goto err_add_slaves;
diff --git a/net/hsr/hsr_device.h b/net/hsr/hsr_device.h
index 6d7759c4f5f9..a099d7de7e79 100644
--- a/net/hsr/hsr_device.h
+++ b/net/hsr/hsr_device.h
@@ -13,7 +13,8 @@
void hsr_dev_setup(struct net_device *dev);
int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
- unsigned char multicast_spec, u8 protocol_version);
+ unsigned char multicast_spec, u8 protocol_version,
+ struct netlink_ext_ack *extack);
void hsr_check_carrier_and_operstate(struct hsr_priv *hsr);
bool is_hsr_master(struct net_device *dev);
int hsr_get_max_mtu(struct hsr_priv *hsr);
diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c
index 8dc0547f01d0..7ed308a0c035 100644
--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -35,26 +35,34 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
unsigned char multicast_spec, hsr_version;
if (!data) {
- netdev_info(dev, "HSR: No slave devices specified\n");
+ NL_SET_ERR_MSG_MOD(extack, "No slave devices specified");
return -EINVAL;
}
if (!data[IFLA_HSR_SLAVE1]) {
- netdev_info(dev, "HSR: Slave1 device not specified\n");
+ NL_SET_ERR_MSG_MOD(extack, "Slave1 device not specified");
return -EINVAL;
}
link[0] = __dev_get_by_index(src_net,
nla_get_u32(data[IFLA_HSR_SLAVE1]));
+ if (!link[0]) {
+ NL_SET_ERR_MSG_MOD(extack, "Slave1 does not exist");
+ return -EINVAL;
+ }
if (!data[IFLA_HSR_SLAVE2]) {
- netdev_info(dev, "HSR: Slave2 device not specified\n");
+ NL_SET_ERR_MSG_MOD(extack, "Slave2 device not specified");
return -EINVAL;
}
link[1] = __dev_get_by_index(src_net,
nla_get_u32(data[IFLA_HSR_SLAVE2]));
+ if (!link[1]) {
+ NL_SET_ERR_MSG_MOD(extack, "Slave2 does not exist");
+ return -EINVAL;
+ }
- if (!link[0] || !link[1])
- return -ENODEV;
- if (link[0] == link[1])
+ if (link[0] == link[1]) {
+ NL_SET_ERR_MSG_MOD(extack, "Slave1 and Slave2 are same");
return -EINVAL;
+ }
if (!data[IFLA_HSR_MULTICAST_SPEC])
multicast_spec = 0;
@@ -66,7 +74,7 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
else
hsr_version = nla_get_u8(data[IFLA_HSR_VERSION]);
- return hsr_dev_finalize(dev, link, multicast_spec, hsr_version);
+ return hsr_dev_finalize(dev, link, multicast_spec, hsr_version, extack);
}
static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c
index fbfd0db182b7..127ebcc0e28f 100644
--- a/net/hsr/hsr_slave.c
+++ b/net/hsr/hsr_slave.c
@@ -58,33 +58,37 @@ bool hsr_port_exists(const struct net_device *dev)
return rcu_access_pointer(dev->rx_handler) == hsr_handle_frame;
}
-static int hsr_check_dev_ok(struct net_device *dev)
+static int hsr_check_dev_ok(struct net_device *dev,
+ struct netlink_ext_ack *extack)
{
/* Don't allow HSR on non-ethernet like devices */
if ((dev->flags & IFF_LOOPBACK) || dev->type != ARPHRD_ETHER ||
dev->addr_len != ETH_ALEN) {
- netdev_info(dev, "Cannot use loopback or non-ethernet device as HSR slave.\n");
+ NL_SET_ERR_MSG_MOD(extack, "Cannot use loopback or non-ethernet device as HSR slave.");
return -EINVAL;
}
/* Don't allow enslaving hsr devices */
if (is_hsr_master(dev)) {
- netdev_info(dev, "Cannot create trees of HSR devices.\n");
+ NL_SET_ERR_MSG_MOD(extack,
+ "Cannot create trees of HSR devices.");
return -EINVAL;
}
if (hsr_port_exists(dev)) {
- netdev_info(dev, "This device is already a HSR slave.\n");
+ NL_SET_ERR_MSG_MOD(extack,
+ "This device is already a HSR slave.");
return -EINVAL;
}
if (is_vlan_dev(dev)) {
- netdev_info(dev, "HSR on top of VLAN is not yet supported in this driver.\n");
+ NL_SET_ERR_MSG_MOD(extack, "HSR on top of VLAN is not yet supported in this driver.");
return -EINVAL;
}
if (dev->priv_flags & IFF_DONT_BRIDGE) {
- netdev_info(dev, "This device does not support bridging.\n");
+ NL_SET_ERR_MSG_MOD(extack,
+ "This device does not support bridging.");
return -EOPNOTSUPP;
}
@@ -126,13 +130,13 @@ static int hsr_portdev_setup(struct net_device *dev, struct hsr_port *port)
}
int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
- enum hsr_port_type type)
+ enum hsr_port_type type, struct netlink_ext_ack *extack)
{
struct hsr_port *port, *master;
int res;
if (type != HSR_PT_MASTER) {
- res = hsr_check_dev_ok(dev);
+ res = hsr_check_dev_ok(dev, extack);
if (res)
return res;
}
diff --git a/net/hsr/hsr_slave.h b/net/hsr/hsr_slave.h
index 64b549529592..8953ea279ce9 100644
--- a/net/hsr/hsr_slave.h
+++ b/net/hsr/hsr_slave.h
@@ -13,7 +13,7 @@
#include "hsr_main.h"
int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
- enum hsr_port_type pt);
+ enum hsr_port_type pt, struct netlink_ext_ack *extack);
void hsr_del_port(struct hsr_port *port);
bool hsr_port_exists(const struct net_device *dev);
--
2.17.1
Powered by blists - more mailing lists