[PATCH xtables-addons v2 2/2] xt_DHCPMAC: replaced skb_make_writable with skb_ensure_writable.

[Jeremy Sowden]

skb_make_writable was removed from the kernel in 5.2 and its callers
converted to use skb_ensure_writable.

Signed-off-by: Jeremy Sowden <jer...@azazel.net>
---
 extensions/xt_DHCPMAC.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/extensions/xt_DHCPMAC.c b/extensions/xt_DHCPMAC.c
index 47f9534f74c7..a748cb101d99 100644
--- a/extensions/xt_DHCPMAC.c
+++ b/extensions/xt_DHCPMAC.c
@@ -96,7 +96,8 @@ dhcpmac_tg(struct sk_buff *skb, const struct xt_action_param 
*par)
        struct udphdr udpbuf, *udph;
        unsigned int i;
 
-       if (!skb_make_writable(skb, 0))
+       if (skb_ensure_writable(skb, ip_hdrlen(skb) + sizeof(udpbuf) +
+                                    sizeof(dhcpbuf)))
                return NF_DROP;
 
        udph = skb_header_pointer(skb, ip_hdrlen(skb),
-- 
2.20.1