target/linux/generic/backport-5.4/080-wireguard-0113-netlink-consistently-use-NLA_POLICY_MIN_LEN.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Johannes Berg <johannes.berg@intel.com>
   3 Date: Tue, 18 Aug 2020 10:17:32 +0200
   4 Subject: [PATCH] netlink: consistently use NLA_POLICY_MIN_LEN()
   5
   6 commit bc0435855041d7fff0b83dd992fc4be34aa11afb upstream.
   7
   8 Change places that open-code NLA_POLICY_MIN_LEN() to
   9 use the macro instead, giving us flexibility in how we
  10 handle the details of the macro.
  11
  12 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  13 Signed-off-by: David S. Miller <davem@davemloft.net>
  14 [Jason: only picked the drivers/net/wireguard/* part]
  15 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
  16 ---
  17  drivers/net/wireguard/netlink.c | 4 ++--
  18  1 file changed, 2 insertions(+), 2 deletions(-)
  19
  20 --- a/drivers/net/wireguard/netlink.c
  21 +++ b/drivers/net/wireguard/netlink.c
  22 @@ -34,7 +34,7 @@ static const struct nla_policy peer_poli
  23         [WGPEER_A_PUBLIC_KEY]                           = NLA_POLICY_EXACT_LEN(NOISE_PUBLIC_KEY_LEN),
  24         [WGPEER_A_PRESHARED_KEY]                        = NLA_POLICY_EXACT_LEN(NOISE_SYMMETRIC_KEY_LEN),
  25         [WGPEER_A_FLAGS]                                = { .type = NLA_U32 },
  26 -       [WGPEER_A_ENDPOINT]                             = { .type = NLA_MIN_LEN, .len = sizeof(struct sockaddr) },
  27 +       [WGPEER_A_ENDPOINT]                             = NLA_POLICY_MIN_LEN(sizeof(struct sockaddr)),
  28         [WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL]        = { .type = NLA_U16 },
  29         [WGPEER_A_LAST_HANDSHAKE_TIME]                  = NLA_POLICY_EXACT_LEN(sizeof(struct __kernel_timespec)),
  30         [WGPEER_A_RX_BYTES]                             = { .type = NLA_U64 },
  31 @@ -45,7 +45,7 @@ static const struct nla_policy peer_poli
  32
  33  static const struct nla_policy allowedip_policy[WGALLOWEDIP_A_MAX + 1] = {
  34         [WGALLOWEDIP_A_FAMILY]          = { .type = NLA_U16 },
  35 -       [WGALLOWEDIP_A_IPADDR]          = { .type = NLA_MIN_LEN, .len = sizeof(struct in_addr) },
  36 +       [WGALLOWEDIP_A_IPADDR]          = NLA_POLICY_MIN_LEN(sizeof(struct in_addr)),
  37         [WGALLOWEDIP_A_CIDR_MASK]       = { .type = NLA_U8 }
  38  };
  39