From b03f4672007e533c8dbf0965f995182586216bf1 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Wed, 23 Jan 2008 20:32:21 -0800 Subject: [NET_SCHED]: sch_netem: use nla_parse_nested_compat Replace open coded equivalent of nla_parse_nested_compat(). Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/sched/sch_netem.c | 58 +++++++++++++++++++++++---------------------------- 1 file changed, 26 insertions(+), 32 deletions(-) (limited to 'net') diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index a7b58df4546d..1a755799ffb8 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -407,13 +407,18 @@ static int get_corrupt(struct Qdisc *sch, const struct nlattr *attr) static int netem_change(struct Qdisc *sch, struct nlattr *opt) { struct netem_sched_data *q = qdisc_priv(sch); + struct nlattr *tb[TCA_NETEM_MAX + 1]; struct tc_netem_qopt *qopt; int ret; - if (opt == NULL || nla_len(opt) < sizeof(*qopt)) + if (opt == NULL) return -EINVAL; - qopt = nla_data(opt); + ret = nla_parse_nested_compat(tb, TCA_NETEM_MAX, opt, NULL, qopt, + sizeof(*qopt)); + if (ret < 0) + return ret; + ret = set_fifo_limit(q->qdisc, qopt->limit); if (ret) { pr_debug("netem: can't set fifo limit\n"); @@ -434,39 +439,28 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt) if (q->gap) q->reorder = ~0; - /* Handle nested options after initial queue options. - * Should have put all options in nested format but too late now. - */ - if (nla_len(opt) > sizeof(*qopt)) { - struct nlattr *tb[TCA_NETEM_MAX + 1]; - if (nla_parse(tb, TCA_NETEM_MAX, - nla_data(opt) + sizeof(*qopt), - nla_len(opt) - sizeof(*qopt), NULL)) - return -EINVAL; - - if (tb[TCA_NETEM_CORR]) { - ret = get_correlation(sch, tb[TCA_NETEM_CORR]); - if (ret) - return ret; - } + if (tb[TCA_NETEM_CORR]) { + ret = get_correlation(sch, tb[TCA_NETEM_CORR]); + if (ret) + return ret; + } - if (tb[TCA_NETEM_DELAY_DIST]) { - ret = get_dist_table(sch, tb[TCA_NETEM_DELAY_DIST]); - if (ret) - return ret; - } + if (tb[TCA_NETEM_DELAY_DIST]) { + ret = get_dist_table(sch, tb[TCA_NETEM_DELAY_DIST]); + if (ret) + return ret; + } - if (tb[TCA_NETEM_REORDER]) { - ret = get_reorder(sch, tb[TCA_NETEM_REORDER]); - if (ret) - return ret; - } + if (tb[TCA_NETEM_REORDER]) { + ret = get_reorder(sch, tb[TCA_NETEM_REORDER]); + if (ret) + return ret; + } - if (tb[TCA_NETEM_CORRUPT]) { - ret = get_corrupt(sch, tb[TCA_NETEM_CORRUPT]); - if (ret) - return ret; - } + if (tb[TCA_NETEM_CORRUPT]) { + ret = get_corrupt(sch, tb[TCA_NETEM_CORRUPT]); + if (ret) + return ret; } return 0; -- cgit v1.2.3