UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

rtnetlink: Add more extack messages to rtnl_newlink 

Add extack arg to the nla_parse_nested calls in rtnl_newlink, and
add messages for unknown device type and link network namespace id.
In particular, it improves the failure message when the wrong link
type is used. From
    $ ip li add bond1 type bonding
    RTNETLINK answers: Operation not supported
to
    $ ip li add bond1 type bonding
    Error: Unknown device type.

(The module name is bonding but the link type is bond.)

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-11-06 12:51:16 -08:00 committed by David S. Miller
parent d7e774f356
commit 68d57f3b1d
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/core/rtnetlink.c
View File

@ -3054,7 +3054,7 @@ replay:
if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
err = nla_parse_nested(attr, ops->maxtype, err = nla_parse_nested(attr, ops->maxtype,
linkinfo[IFLA_INFO_DATA], linkinfo[IFLA_INFO_DATA],
ops->policy, NULL); ops->policy, extack);
if (err < 0) if (err < 0)
return err; return err;
data = attr; data = attr;
@ -3076,7 +3076,7 @@ replay:
m_ops->slave_maxtype, m_ops->slave_maxtype,
linkinfo[IFLA_INFO_SLAVE_DATA], linkinfo[IFLA_INFO_SLAVE_DATA],
m_ops->slave_policy, m_ops->slave_policy,
NULL); extack);
if (err < 0) if (err < 0)
return err; return err;
slave_data = slave_attr; slave_data = slave_attr;
@ -3140,6 +3140,7 @@ replay:
goto replay; goto replay;
} }
#endif #endif
NL_SET_ERR_MSG(extack, "Unknown device type");
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }
@ -3160,6 +3161,7 @@ replay:
link_net = get_net_ns_by_id(dest_net, id); link_net = get_net_ns_by_id(dest_net, id);
if (!link_net) { if (!link_net) {
NL_SET_ERR_MSG(extack, "Unknown network namespace id");
err = -EINVAL; err = -EINVAL;
goto out; goto out;
} }