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libnetlink: parse_rtattr_nested should allow NLA_F_NESTED flag

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In kernel commit 8cb081746c03 ("netlink: make validation more configurable
for future strictness"), Linux started implicitly flagging nests with
NLA_F_NESTED, unless the nest is created with nla_nest_start_noflag().

The ETS code uses nla_nest_start() where possible, so it does not work with
the current iproute2 code. Have libnetlink catch up by admitting the flag
in the attribute.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Petr Machata 2020-01-13 15:16:28 +01:00 committed by David Ahern
parent ed81a2a040
commit 0da4cfaa5d
1 changed files with 2 additions and 1 deletions
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3
include/libnetlink.h
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@ -173,7 +173,8 @@ int rta_nest_end(struct rtattr *rta, struct rtattr *nest);
RTA_ALIGN((rta)->rta_len)))
#define parse_rtattr_nested(tb, max, rta) \
(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
(parse_rtattr_flags((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta), \
NLA_F_NESTED))
#define parse_rtattr_one_nested(type, rta) \
(parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta)))