Introduce routine to calculate size of the common tc netlink attributes,
and another helper routine to get the full message size including netlink
header and service header.
Signed-off-by: Roman Mashak <m...@mojatatu.com>
---
net/sched/act_api.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 1f65d6a..acac92a 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -109,6 +109,33 @@ int __tcf_idr_release(struct tc_action *p, bool bind, bool
strict)
}
EXPORT_SYMBOL(__tcf_idr_release);
+static size_t tcf_action_shared_attrs_size(const struct tc_action *act)
+{
+ u32 cookie_len = 0;
+
+ if (act->act_cookie)
+ cookie_len = nla_total_size(act->act_cookie->len);
+
+ return nla_total_size(0) /* action number nested */
+ + nla_total_size(IFNAMSIZ) /* TCA_ACT_KIND */
+ + cookie_len /* TCA_ACT_COOKIE */
+ + nla_total_size(0) /* TCA_ACT_STATS nested */
+ /* TCA_STATS_BASIC */
+ + nla_total_size_64bit(sizeof(struct gnet_stats_basic))
+ /* TCA_STATS_QUEUE */
+ + nla_total_size_64bit(sizeof(struct gnet_stats_queue))
+ + nla_total_size(0) /* TCA_OPTIONS nested */
+ + nla_total_size(sizeof(struct tcf_t)); /* TCA_GACT_TM */
+}
+
+static size_t tcf_action_full_attrs_size(size_t sz)
+{
+ return NLMSG_HDRLEN /* struct nlmsghdr */
+ + sizeof(struct tcamsg)
+ + nla_total_size(0) /* TCA_ACT_TAB nested */
+ + sz;
+}
+
static int tcf_dump_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
struct netlink_callback *cb)
{
--
2.7.4
