On Wed, 2012-08-22 at 16:33 -0500, Larry Finger wrote: > On 08/22/2012 12:15 AM, Eric Dumazet wrote: > > > > This particular commit is the start of a patches batch that ended in the > > generic TCP coalescing mechanism. > > > > It is known to have problem on drivers doing skb_clone() in their rx > > path. > > > > Current kernels should be ok, because coalescing doesnt happen if the > > destination skb is cloned (skb_cloned(to) in skb_try_coalesce()) > > The skb_clone() call is not the source of the problem for r8712u, as it is only > used when a memory allocation fails, which is not happening. The suggestion did > lead to another patch that I had been preparing. The initial allocation of RX > buffers used a size of 30720 bytes, while 9100 is sufficient to allow > aggregation. Upon reducing the buffer size, the driver now works for me. I am > now awaiting tests by the OP on the Red Hat bugzilla before sending the patch > upstream. > > So far, no ideas for the problem in connecting to WPA1 networks. > Changing the allocation size removes the problem ? thats really strange. If you try different sizes in the 9100-30720 range, can you pinpoint the failure threshold ? -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
