xfrm: rename struct xfrm_filter

iproute2 already defines a structure with that name, let's use another one to
avoid any conflict.

CC: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 023e5e7..903725b 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -904,7 +904,7 @@
 
 	if (!cb->args[0]) {
 		struct nlattr *attrs[XFRMA_MAX+1];
-		struct xfrm_filter *filter = NULL;
+		struct xfrm_address_filter *filter = NULL;
 		u8 proto = 0;
 		int err;
 
@@ -915,12 +915,12 @@
 		if (err < 0)
 			return err;
 
-		if (attrs[XFRMA_FILTER]) {
+		if (attrs[XFRMA_ADDRESS_FILTER]) {
 			filter = kmalloc(sizeof(*filter), GFP_KERNEL);
 			if (filter == NULL)
 				return -ENOMEM;
 
-			memcpy(filter, nla_data(attrs[XFRMA_FILTER]),
+			memcpy(filter, nla_data(attrs[XFRMA_ADDRESS_FILTER]),
 			       sizeof(*filter));
 		}
 
@@ -2334,7 +2334,7 @@
 	[XFRMA_REPLAY_ESN_VAL]	= { .len = sizeof(struct xfrm_replay_state_esn) },
 	[XFRMA_SA_EXTRA_FLAGS]	= { .type = NLA_U32 },
 	[XFRMA_PROTO]		= { .type = NLA_U8 },
-	[XFRMA_FILTER]		= { .len = sizeof(struct xfrm_filter) },
+	[XFRMA_ADDRESS_FILTER]	= { .len = sizeof(struct xfrm_address_filter) },
 };
 
 static const struct xfrm_link {