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| author |   David Ahern <dsahern@gmail.com> | 2017-05-27 16:19:27 -0600 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-05-30 11:55:31 -0400 |
| commit | c255bd681d1a93fff2a2c249d91449cce830ac64 (patch) | |
| tree | 926aa52879b0b1c3f348e37e599375c0e7a06641 /net/core/lwtunnel.c | |
| parent | net: ipv4: Add extack message for invalid prefix or length (diff) | |
| download | linux-dev-c255bd681d1a93fff2a2c249d91449cce830ac64.tar.xz linux-dev-c255bd681d1a93fff2a2c249d91449cce830ac64.zip | |
net: lwtunnel: Add extack to encap attr validation
Pass extack down to lwtunnel_valid_encap_type and
lwtunnel_valid_encap_type_attr. Add messages for unknown
or unsupported encap types.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/lwtunnel.c')
| -rw-r--r-- | net/core/lwtunnel.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c index cfae3d5fe11f..ab840386a74d 100644 --- a/net/core/lwtunnel.c +++ b/net/core/lwtunnel.c @@ -126,14 +126,16 @@ int lwtunnel_build_state(u16 encap_type, } EXPORT_SYMBOL(lwtunnel_build_state); -int lwtunnel_valid_encap_type(u16 encap_type) +int lwtunnel_valid_encap_type(u16 encap_type, struct netlink_ext_ack *extack) { const struct lwtunnel_encap_ops *ops; int ret = -EINVAL; if (encap_type == LWTUNNEL_ENCAP_NONE || - encap_type > LWTUNNEL_ENCAP_MAX) + encap_type > LWTUNNEL_ENCAP_MAX) { + NL_SET_ERR_MSG(extack, "Unknown lwt encapsulation type"); return ret; + } rcu_read_lock(); ops = rcu_dereference(lwtun_encaps[encap_type]); @@ -153,11 +155,16 @@ int lwtunnel_valid_encap_type(u16 encap_type) } } #endif - return ops ? 0 : -EOPNOTSUPP; + ret = ops ? 0 : -EOPNOTSUPP; + if (ret < 0) + NL_SET_ERR_MSG(extack, "lwt encapsulation type not supported"); + + return ret; } EXPORT_SYMBOL(lwtunnel_valid_encap_type); -int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int remaining) +int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int remaining, + struct netlink_ext_ack *extack) { struct rtnexthop *rtnh = (struct rtnexthop *)attr; struct nlattr *nla_entype; @@ -174,7 +181,8 @@ int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int remaining) if (nla_entype) { encap_type = nla_get_u16(nla_entype); - if (lwtunnel_valid_encap_type(encap_type) != 0) + if (lwtunnel_valid_encap_type(encap_type, + extack) != 0) return -EOPNOTSUPP; } } |