On Tuesday 2015-11-17 20:40, Tejun Heo wrote:
>@@ -0,0 +1,14 @@
>+#ifndef _XT_CGROUP2_H
>+#define _XT_CGROUP2_H
>+
>+#include <linux/types.h>
>+
>+struct xt_cgroup2_info {
>+ char path[PATH_MAX];
>+ __u8 invert;
Should <linux/limits.h> be included? (For PATH_MAX)
>+ /* kernel internal data */
>+ void *priv;
>+};
void *priv __attribute__((aligned(8)));
>+static bool cgroup2_mt(const struct sk_buff *skb, struct xt_action_param *par)
>+{
>+ const struct xt_cgroup2_info *info = par->matchinfo;
>+ struct cgroup *ancestor = info->priv;
There is no modification planned on the cgroup, so this too can be const struct
cgroup * if-and-when cgroup_is_descendant is made to take const ptrs as well.
>+ if (!skb->sk || !sk_fullsock(skb->sk))
>+ return false;
>+
>+ return cgroup_is_descendant(skb->sk->sk_cgroup, ancestor) ^ info->invert;
>+}
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