diff options
| author |   Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> | 2019-06-14 10:09:44 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-14 08:54:27 -0700 |
| commit | 733f0766c3dea0a92573e38acb62ace3cf4e58c6 (patch) | |
| tree | d10e66277574e5ff6deffa1b5e355c88d3197834 /net/sched | |
| parent | l2tp: no need to check return value of debugfs_create functions (diff) | |
| download | wireguard-linux-733f0766c3dea0a92573e38acb62ace3cf4e58c6.tar.xz wireguard-linux-733f0766c3dea0a92573e38acb62ace3cf4e58c6.zip | |
sched: act_ctinfo: use extack error reporting
Use extack error reporting mechanism in addition to returning -EINVAL
NL_SET_ERR_* code shamelessy copy/paste/adjusted from act_pedit &
sch_cake and used as reference as to what I should have done in the
first place.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/act_ctinfo.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/net/sched/act_ctinfo.c b/net/sched/act_ctinfo.c index e78b60e47c0f..a7d3679d7e2e 100644 --- a/net/sched/act_ctinfo.c +++ b/net/sched/act_ctinfo.c @@ -165,15 +165,20 @@ static int tcf_ctinfo_init(struct net *net, struct nlattr *nla, u8 dscpmaskshift; int ret = 0, err; - if (!nla) + if (!nla) { + NL_SET_ERR_MSG_MOD(extack, "ctinfo requires attributes to be passed"); return -EINVAL; + } - err = nla_parse_nested(tb, TCA_CTINFO_MAX, nla, ctinfo_policy, NULL); + err = nla_parse_nested(tb, TCA_CTINFO_MAX, nla, ctinfo_policy, extack); if (err < 0) return err; - if (!tb[TCA_CTINFO_ACT]) + if (!tb[TCA_CTINFO_ACT]) { + NL_SET_ERR_MSG_MOD(extack, + "Missing required TCA_CTINFO_ACT attribute"); return -EINVAL; + } actparm = nla_data(tb[TCA_CTINFO_ACT]); /* do some basic validation here before dynamically allocating things */ @@ -182,13 +187,21 @@ static int tcf_ctinfo_init(struct net *net, struct nlattr *nla, dscpmask = nla_get_u32(tb[TCA_CTINFO_PARMS_DSCP_MASK]); /* need contiguous 6 bit mask */ dscpmaskshift = dscpmask ? __ffs(dscpmask) : 0; - if ((~0 & (dscpmask >> dscpmaskshift)) != 0x3f) + if ((~0 & (dscpmask >> dscpmaskshift)) != 0x3f) { + NL_SET_ERR_MSG_ATTR(extack, + tb[TCA_CTINFO_PARMS_DSCP_MASK], + "dscp mask must be 6 contiguous bits"); return -EINVAL; + } dscpstatemask = tb[TCA_CTINFO_PARMS_DSCP_STATEMASK] ? nla_get_u32(tb[TCA_CTINFO_PARMS_DSCP_STATEMASK]) : 0; /* mask & statemask must not overlap */ - if (dscpmask & dscpstatemask) + if (dscpmask & dscpstatemask) { + NL_SET_ERR_MSG_ATTR(extack, + tb[TCA_CTINFO_PARMS_DSCP_STATEMASK], + "dscp statemask must not overlap dscp mask"); return -EINVAL; + } } /* done the validation:now to the actual action allocation */ |