batman-adv tries to resend broadcasts on all interfaces up to three times. For each round and each interface it must provide a skb which gets consumed by the sending function.
It is unnecessary to copy the data of each broadcast because the actual data is either not shared or already copied by add_bcast_packet_to_list. So it is enough to just copy the skb control data
Reported-by: David S. Miller davem@davemloft.net Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de --- drivers/staging/batman-adv/send.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/staging/batman-adv/send.c b/drivers/staging/batman-adv/send.c index b39c67b..8dd9dd4 100644 --- a/drivers/staging/batman-adv/send.c +++ b/drivers/staging/batman-adv/send.c @@ -464,7 +464,7 @@ static void send_outstanding_bcast_packet(struct work_struct *work) rcu_read_lock(); list_for_each_entry_rcu(batman_if, &if_list, list) { /* send a copy of the saved skb */ - skb1 = skb_copy(forw_packet->skb, GFP_ATOMIC); + skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC); if (skb1) send_skb_packet(skb1, batman_if, broadcast_addr);