diff options
author | Tom Herbert <therbert@google.com> | 2010-05-20 18:37:59 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2010-05-21 00:38:33 -0700 |
commit | 76cc8b13a6e41b537fd262b600da1571314add62 (patch) | |
tree | a8a25a4f23be5c0eeed77dd9fcb30dc9b315e519 /net/wireless | |
parent | 1f01bfd202bc539bccd282befa2bbdb8d6ad80ee (diff) |
net: fix problem in dequeuing from input_pkt_queue
Fix some issues introduced in batch skb dequeuing for input_pkt_queue.
The primary issue it that the queue head must be incremented only
after a packet has been processed, that is only after
__netif_receive_skb has been called. This is needed for the mechanism
to prevent OOO packet in RFS. Also when flushing the input_pkt_queue
and process_queue, the process queue should be done first to prevent
OOO packets.
Because the input_pkt_queue has been effectively split into two queues,
the calculation of the tail ptr is no longer correct. The correct value
would be head+input_pkt_queue->len+process_queue->len. To avoid
this calculation we added an explict input_queue_tail in softnet_data.
The tail value is simply incremented when queuing to input_pkt_queue.
Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/wireless')
0 files changed, 0 insertions, 0 deletions