diff options
| author | David Ahern <dsahern@gmail.com> | 2018-11-06 23:51:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-07 02:00:45 +0300 |
| commit | 68d57f3b1d1a87b4022a0a7463126d7ea172bda1 (patch) | |
| tree | a1961d9305000dc38c7ec2fc315a818b710e4055 /net/core/rtnetlink.c | |
| parent | d7e774f356765d49b63490d611caa496713b7abb (diff) | |
| download | linux-68d57f3b1d1a87b4022a0a7463126d7ea172bda1.tar.xz | |
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>
Diffstat (limited to 'net/core/rtnetlink.c')
| -rw-r--r-- | net/core/rtnetlink.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index f787b7640d49..86f2d9cbdae3 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -3054,7 +3054,7 @@ replay: if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { err = nla_parse_nested(attr, ops->maxtype, linkinfo[IFLA_INFO_DATA], - ops->policy, NULL); + ops->policy, extack); if (err < 0) return err; data = attr; @@ -3076,7 +3076,7 @@ replay: m_ops->slave_maxtype, linkinfo[IFLA_INFO_SLAVE_DATA], m_ops->slave_policy, - NULL); + extack); if (err < 0) return err; slave_data = slave_attr; @@ -3140,6 +3140,7 @@ replay: goto replay; } #endif + NL_SET_ERR_MSG(extack, "Unknown device type"); return -EOPNOTSUPP; } @@ -3160,6 +3161,7 @@ replay: link_net = get_net_ns_by_id(dest_net, id); if (!link_net) { + NL_SET_ERR_MSG(extack, "Unknown network namespace id"); err = -EINVAL; goto out; } |