batman-adv: Prefix bitarray non-static functions with batadv_

batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.
Reported-by: NDavid Miller <davem@davemloft.net>
Signed-off-by: NSven Eckelmann <sven@narfation.org>

net/batman-adv/bat_iv_ogm.c

@@ -903,7 +903,7 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
 			set_mark = 0;
 
 		/* if the window moved, set the update flag. */
-		need_update |= bit_get_packet(bat_priv,
+		need_update |= batadv_bit_get_packet(bat_priv,
 						     tmp_neigh_node->real_bits,
 						     seq_diff, set_mark);
 

net/batman-adv/bitarray.c

@@ -25,7 +25,7 @@
 #include <linux/bitops.h>
 
 /* shift the packet array by n places. */
-static void bat_bitmap_shift_left(unsigned long *seq_bits, int32_t n)
+static void batadv_bitmap_shift_left(unsigned long *seq_bits, int32_t n)
 {
 	if (n <= 0 || n >= TQ_LOCAL_WINDOW_SIZE)
 		return;
@@ -40,7 +40,7 @@ static void bat_bitmap_shift_left(unsigned long *seq_bits, int32_t n)
  *  1 if the window was moved (either new or very old)
  *  0 if the window was not moved/shifted.
  */
-int bit_get_packet(void *priv, unsigned long *seq_bits,
+int batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
 			  int32_t seq_num_diff, int set_mark)
 {
 	struct bat_priv *bat_priv = priv;
@@ -58,7 +58,7 @@ int bit_get_packet(void *priv, unsigned long *seq_bits,
 	 * set the mark if required */
 
 	if ((seq_num_diff > 0) && (seq_num_diff < TQ_LOCAL_WINDOW_SIZE)) {
-		bat_bitmap_shift_left(seq_bits, seq_num_diff);
+		batadv_bitmap_shift_left(seq_bits, seq_num_diff);
 
 		if (set_mark)
 			bat_set_bit(seq_bits, 0);

net/batman-adv/bitarray.h

@@ -48,7 +48,7 @@ static inline void bat_set_bit(unsigned long *seq_bits, int32_t n)
 
 /* receive and process one packet, returns 1 if received seq_num is considered
  * new, 0 if old  */
-int bit_get_packet(void *priv, unsigned long *seq_bits,
+int batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
 			  int32_t seq_num_diff, int set_mark);
 
 #endif /* _NET_BATMAN_ADV_BITARRAY_H_ */

net/batman-adv/routing.c

@@ -54,7 +54,7 @@ void slide_own_bcast_window(struct hard_iface *hard_iface)
 			word_index = hard_iface->if_num * NUM_WORDS;
 			word = &(orig_node->bcast_own[word_index]);
 
-			bit_get_packet(bat_priv, word, 1, 0);
+			batadv_bit_get_packet(bat_priv, word, 1, 0);
 			orig_node->bcast_own_sum[hard_iface->if_num] =
 				bitmap_weight(word, TQ_LOCAL_WINDOW_SIZE);
 			spin_unlock_bh(&orig_node->ogm_cnt_lock);
@@ -1083,7 +1083,7 @@ int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 
 	/* mark broadcast in flood history, update window position
 	 * if required. */
-	if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
+	if (batadv_bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
 		orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno);
 
 	spin_unlock_bh(&orig_node->bcast_seqno_lock);