netfilter: nft_reject_bridge: fix missing declaration of csum_ipv6_magic

Commit 523b929d544 (netfilter: nft_reject_bridge: don't use IP stack to reject traffic) adds a use of csum_ipv6_magic but doesn't include net/ip6_checksum.h. On architectures that don't define _HAVE_ARCH_IPV6_CSUM, like ppc and s390x, we don't get the prototype declared and the build fails.

---
 net/bridge/netfilter/nft_reject_bridge.c |    1 +
 1 file changed, 1 insertion(+)

@@ -18,6 +18,7 @@
 #include <net/netfilter/ipv6/nf_reject.h>
 #include <linux/ip.h>
 #include <net/ip.h>
+#include <net/ip6_checksum.h>
 #include <linux/netfilter_bridge.h>
 #include "../br_private.h"
 

Jeff Mahoney
SUSE Labs