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| author | Alexander Aring <aring@mojatatu.com> | 2017-12-20 12:35:18 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-21 12:32:50 -0500 |
| commit | e9bc3fa28bae7612f41e3538f241a2f87f629c94 (patch) | |
| tree | 5909d2930a9fe800a3da1af973eb465ee7fd28e4 /net/sched/sch_api.c | |
| parent | 653d6fd68d8e5b43d496ca8a1d38331d515a226b (diff) | |
| download | lwn-e9bc3fa28bae7612f41e3538f241a2f87f629c94.tar.gz lwn-e9bc3fa28bae7612f41e3538f241a2f87f629c94.zip | |
net: sch: api: add extack support in qdisc_get_rtab
This patch adds extack support for the function qdisc_get_rtab which is
a common used function in the tc subsystem. Callers which are interested
in the receiving error can assign extack to get a more detailed
information why qdisc_get_rtab failed.
Cc: David Ahern <dsahern@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_api.c')
| -rw-r--r-- | net/sched/sch_api.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 4b950d72d13b..79a9fdf9471d 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -393,13 +393,16 @@ static __u8 __detect_linklayer(struct tc_ratespec *r, __u32 *rtab) static struct qdisc_rate_table *qdisc_rtab_list; struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, - struct nlattr *tab) + struct nlattr *tab, + struct netlink_ext_ack *extack) { struct qdisc_rate_table *rtab; if (tab == NULL || r->rate == 0 || r->cell_log == 0 || - nla_len(tab) != TC_RTAB_SIZE) + nla_len(tab) != TC_RTAB_SIZE) { + NL_SET_ERR_MSG(extack, "Invalid rate table parameters for searching"); return NULL; + } for (rtab = qdisc_rtab_list; rtab; rtab = rtab->next) { if (!memcmp(&rtab->rate, r, sizeof(struct tc_ratespec)) && @@ -418,6 +421,8 @@ struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, r->linklayer = __detect_linklayer(r, rtab->data); rtab->next = qdisc_rtab_list; qdisc_rtab_list = rtab; + } else { + NL_SET_ERR_MSG(extack, "Failed to allocate new qdisc rate table"); } return rtab; } |