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genl: ctrl: print op -> policy idx mapping

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Newer kernels can dump per-op policies, so print out the new
mapping attribute to indicate which op has which policy.

v2:
 * print out both do/dump policy idx
v3:
 * fix userspace API which renumbered after patch rebasing

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Johannes Berg 2020-10-03 10:45:32 +02:00 committed by David Ahern
parent 91c54917cd
commit 7812012849
1 changed files with 27 additions and 0 deletions
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27
genl/ctrl.c
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@ -162,6 +162,33 @@ static int print_ctrl(struct rtnl_ctrl_data *ctrl,
__u32 *ma = RTA_DATA(tb[CTRL_ATTR_MAXATTR]);
fprintf(fp, " max attribs: %d ",*ma);
}
if (tb[CTRL_ATTR_OP_POLICY]) {
const struct rtattr *pos;
rtattr_for_each_nested(pos, tb[CTRL_ATTR_OP_POLICY]) {
struct rtattr *ptb[CTRL_ATTR_POLICY_DUMP_MAX + 1];
struct rtattr *pattrs = RTA_DATA(pos);
int plen = RTA_PAYLOAD(pos);
parse_rtattr_flags(ptb, CTRL_ATTR_POLICY_DUMP_MAX,
pattrs, plen, NLA_F_NESTED);
fprintf(fp, " op %d policies:",
pos->rta_type & ~NLA_F_NESTED);
if (ptb[CTRL_ATTR_POLICY_DO]) {
__u32 *v = RTA_DATA(ptb[CTRL_ATTR_POLICY_DO]);
fprintf(fp, " do=%d", *v);
}
if (ptb[CTRL_ATTR_POLICY_DUMP]) {
__u32 *v = RTA_DATA(ptb[CTRL_ATTR_POLICY_DUMP]);
fprintf(fp, " dump=%d", *v);
}
}
}
if (tb[CTRL_ATTR_POLICY])
nl_print_policy(tb[CTRL_ATTR_POLICY], fp);