Make defines psd specific so they dont redefine in-kernel defines like
HASH_SIZE.

[moved header to uapi for kernel-4.12.4 / tmb]
Signed-off-by Thomas Backlund <tmb@mageia.org>

---
 include/uapi/linux/netfilter_ipv4/ipt_psd.h |   14 +++++++-------
 net/ipv4/netfilter/ipt_psd.c           |   14 +++++++-------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff -Nurp linux-psd/include/uapi/linux/netfilter_ipv4/ipt_psd.h linux-psd-fix/include/uapi/linux/netfilter_ipv4/ipt_psd.h
--- linux-psd/include/uapi/linux/netfilter_ipv4/ipt_psd.h
+++ linux-psd-fix/include/uapi/linux/netfilter_ipv4/ipt_psd.h
@@ -21,14 +21,14 @@
 #define SCAN_DELAY_THRESHOLD		(300) /* old usage of HZ here was erroneously and broke under uml */
 
 /*
- * Keep track of up to LIST_SIZE source addresses, using a hash table of
- * HASH_SIZE entries for faster lookups, but limiting hash collisions to
- * HASH_MAX source addresses per the same hash value.
+ * Keep track of up to PSD_LIST_SIZE source addresses, using a hash table of
+ * PSD_HASH_SIZE entries for faster lookups, but limiting hash collisions to
+ * PSD_HASH_MAX source addresses per the same hash value.
  */
-#define LIST_SIZE			0x100
-#define HASH_LOG			9
-#define HASH_SIZE			(1 << HASH_LOG)
-#define HASH_MAX			0x10
+#define PSD_LIST_SIZE			0x100
+#define PSD_HASH_LOG			9
+#define PSD_HASH_SIZE			(1 << PSD_HASH_LOG)
+#define PSD_HASH_MAX			0x10
 
 struct ipt_psd_info {
 	unsigned int weight_threshold;
diff -Nurp linux-4.9.5-psd/net/ipv4/netfilter/ipt_psd.c linux-4.9.5-psd-fix/net/ipv4/netfilter/ipt_psd.c
--- linux-4.9.5-psd/net/ipv4/netfilter/ipt_psd.c	2017-01-20 21:47:19.792931402 +0200
+++ linux-4.9.5-psd-fix/net/ipv4/netfilter/ipt_psd.c	2017-01-20 21:58:09.998871253 +0200
@@ -74,8 +74,8 @@ struct host {
  */
 static struct {
 	spinlock_t lock;
-	struct host list[LIST_SIZE];	/* List of source addresses */
-	struct host *hash[HASH_SIZE];	/* Hash: pointers into the list */
+	struct host list[PSD_LIST_SIZE];	/* List of source addresses */
+	struct host *hash[PSD_HASH_SIZE];	/* Hash: pointers into the list */
 	int index;			/* Oldest entry to be replaced */
 } state;
 
@@ -91,9 +91,9 @@ static inline int hashfunc(struct in_add
 	hash = 0;
 	do {
 		hash ^= value;
-	} while ((value >>= HASH_LOG));
+	} while ((value >>= PSD_HASH_LOG));
 
-	return hash & (HASH_SIZE - 1);
+	return hash & (PSD_HASH_SIZE - 1);
 }
 
 static bool
@@ -245,11 +245,11 @@ ipt_psd_match(const struct sk_buff *pskb
 	/* Got too many source addresses with the same hash value? Then remove the
 	 * oldest one from the hash table, so that they can't take too much of our
 	 * CPU time even with carefully chosen spoofed IP addresses. */
-	if (count >= HASH_MAX && last) last->next = NULL;
+	if (count >= PSD_HASH_MAX && last) last->next = NULL;
 
 	/* We're going to re-use the oldest list entry, so remove it from the hash
 	 * table first (if it is really already in use, and isn't removed from the
-	 * hash table already because of the HASH_MAX check above). */
+	 * hash table already because of the PSD_HASH_MAX check above). */
 
 	/* First, find it */
 	if (state.list[state.index].src_addr.s_addr)
@@ -273,7 +273,7 @@ ipt_psd_match(const struct sk_buff *pskb
 
 	/* Get our list entry */
 	curr = &state.list[state.index++];
-	if (state.index >= LIST_SIZE) state.index = 0;
+	if (state.index >= PSD_LIST_SIZE) state.index = 0;
 
 	/* Link it into the hash table */
 	head = &state.hash[hash];