3.16-stable review patch. If anyone has any objections, please let me know.
------------------ From: Nicolas Dichtel <[email protected]> [ Upstream commit 07d92d5cc977a7fe1e683e1d4a6f723f7f2778cb ] Since commit 412ca1550cbe ("macvlan: Move broadcasts into a work queue"), the driver uses tx_queue_len of the master device as the limit of packets enqueuing. Problem is that virtual drivers have this value set to 0, thus all broadcast packets were rejected. Because tx_queue_len was arbitrarily chosen, I replace it with a static limit of 1000 (also arbitrarily chosen). CC: Herbert Xu <[email protected]> Reported-by: Thibaut Collet <[email protected]> Suggested-by: Thibaut Collet <[email protected]> Tested-by: Thibaut Collet <[email protected]> Signed-off-by: Nicolas Dichtel <[email protected]> Acked-by: Herbert Xu <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/macvlan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -36,6 +36,7 @@ #include <linux/netpoll.h> #define MACVLAN_HASH_SIZE (1 << BITS_PER_BYTE) +#define MACVLAN_BC_QUEUE_LEN 1000 struct macvlan_port { struct net_device *dev; @@ -248,7 +249,7 @@ static void macvlan_broadcast_enqueue(st goto err; spin_lock(&port->bc_queue.lock); - if (skb_queue_len(&port->bc_queue) < skb->dev->tx_queue_len) { + if (skb_queue_len(&port->bc_queue) < MACVLAN_BC_QUEUE_LEN) { __skb_queue_tail(&port->bc_queue, nskb); err = 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
