commit 2fe8ed6fe9dd8c50f06c16921b42d6f0e17f9f7c
author Mathis Marion <mathis.marion@silabs.com> Tue Mar 07 16:42:56 2023 +0100
committer Laurent Vivier <laurent@vivier.eu> Fri Mar 10 20:45:47 2023 +0100
tree d1f1b201a79ecbfdd81961add7a8027461656f5c
parent 44cf6731d6b9a48bcd57392e8cd6f0f712aaa677

linux-user: handle netlink flag NLA_F_NESTED

Newer kernel versions require this flag to be present contrary to older
ones. Depending on the libnl version it is added or not.

Typically when using rtnl_link_inet6_set_addr_gen_mode, the netlink
packet generated may contain the following attribute:

with libnl 3.4

  {nla_len=16, nla_type=IFLA_AF_SPEC},
  [
    {nla_len=12, nla_type=AF_INET6},
    [{nla_len=5, nla_type=IFLA_INET6_ADDR_GEN_MODE}, IN6_ADDR_GEN_MODE_NONE]
  ]

with libnl 3.7

  {nla_len=16, nla_type=NLA_F_NESTED|IFLA_AF_SPEC},
  [
    {nla_len=12, nla_type=NLA_F_NESTED|AF_INET6},
    [{nla_len=5, nla_type=IFLA_INET6_ADDR_GEN_MODE}, IN6_ADDR_GEN_MODE_NONE]]
  ]

Masking the type is likely needed in other places. Only the above cases
are implemented in this patch.

Signed-off-by: Mathis Marion <mathis.marion@silabs.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20230307154256.101528-3-Mathis.Marion@silabs.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>