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net/sched: act_tunnel_key: add extended ack support 

Add extended ack support for the tunnel key action by using NL_SET_ERR_MSG
during validation of user input.

Cc: Alexander Aring <aring@mojatatu.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Simon Horman 2018-06-26 21:39:35 -07:00 committed by David S. Miller
parent a1165b5919
commit 9d7298cd1d
1 changed files with 21 additions and 6 deletions
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27
net/sched/act_tunnel_key.c
View File

@ -86,16 +86,22 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
int ret = 0;
int err;
if (!nla)
if (!nla) {
NL_SET_ERR_MSG(extack, "Tunnel requires attributes to be passed");
return -EINVAL;
}
err = nla_parse_nested(tb, TCA_TUNNEL_KEY_MAX, nla, tunnel_key_policy,
NULL);
if (err < 0)
extack);
if (err < 0) {
NL_SET_ERR_MSG(extack, "Failed to parse nested tunnel key attributes");
return err;
}
if (!tb[TCA_TUNNEL_KEY_PARMS])
if (!tb[TCA_TUNNEL_KEY_PARMS]) {
NL_SET_ERR_MSG(extack, "Missing tunnel key parameters");
return -EINVAL;
}
parm = nla_data(tb[TCA_TUNNEL_KEY_PARMS]);
exists = tcf_idr_check(tn, parm->index, a, bind);
@ -107,6 +113,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
break;
case TCA_TUNNEL_KEY_ACT_SET:
if (!tb[TCA_TUNNEL_KEY_ENC_KEY_ID]) {
NL_SET_ERR_MSG(extack, "Missing tunnel key id");
ret = -EINVAL;
goto err_out;
}
@ -144,11 +151,13 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
0, flags,
key_id, 0);
} else {
NL_SET_ERR_MSG(extack, "Missing either ipv4 or ipv6 src and dst");
ret = -EINVAL;
goto err_out;
}
if (!metadata) {
NL_SET_ERR_MSG(extack, "Cannot allocate tunnel metadata dst");
ret = -ENOMEM;
goto err_out;
}
@ -156,6 +165,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
metadata->u.tun_info.mode |= IP_TUNNEL_INFO_TX;
break;
default:
NL_SET_ERR_MSG(extack, "Unknown tunnel key action");
ret = -EINVAL;
goto err_out;
}
@ -163,14 +173,18 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
if (!exists) {
ret = tcf_idr_create(tn, parm->index, est, a,
&act_tunnel_key_ops, bind, true);
if (ret)
if (ret) {
NL_SET_ERR_MSG(extack, "Cannot create TC IDR");
return ret;
}
ret = ACT_P_CREATED;
} else {
tcf_idr_release(*a, bind);
if (!ovr)
if (!ovr) {
NL_SET_ERR_MSG(extack, "TC IDR already exists");
return -EEXIST;
}
}
t = to_tunnel_key(*a);
@ -180,6 +194,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
if (unlikely(!params_new)) {
if (ret == ACT_P_CREATED)
tcf_idr_release(*a, bind);
NL_SET_ERR_MSG(extack, "Cannot allocate tunnel key parameters");
return -ENOMEM;
}