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igb: fix ethtool offline test

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A bug was introduced with the following patch:

  Commmit bdbc063129
  Author: Eric Dumazet <eric.dumazet@gmail.com>
  igb: Add support for byte queue limits.

The ethtool offline tests will cause a perpetual link flap, this
is because the tests also need to account for byte queue limits (BQL).

CC: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by:  Jeff Pieper  <jeffrey.e.pieper@intel.com>
This commit is contained in:
Jeff Kirsher 2012-01-19 18:31:34 +00:00
parent f124488e47
commit 51a76c3092
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/intel/igb/igb_ethtool.c
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@ -1577,7 +1577,9 @@ static int igb_clean_test_rings(struct igb_ring *rx_ring,
union e1000_adv_rx_desc *rx_desc;
struct igb_rx_buffer *rx_buffer_info;
struct igb_tx_buffer *tx_buffer_info;
struct netdev_queue *txq;
u16 rx_ntc, tx_ntc, count = 0;
unsigned int total_bytes = 0, total_packets = 0;
/* initialize next to clean and descriptor values */
rx_ntc = rx_ring->next_to_clean;
@ -1601,6 +1603,8 @@ static int igb_clean_test_rings(struct igb_ring *rx_ring,
/* unmap buffer on tx side */
tx_buffer_info = &tx_ring->tx_buffer_info[tx_ntc];
total_bytes += tx_buffer_info->bytecount;
total_packets += tx_buffer_info->gso_segs;
igb_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
/* increment rx/tx next to clean counters */
@ -1615,6 +1619,9 @@ static int igb_clean_test_rings(struct igb_ring *rx_ring,
rx_desc = IGB_RX_DESC(rx_ring, rx_ntc);
}
txq = netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index);
netdev_tx_completed_queue(txq, total_packets, total_bytes);
/* re-map buffers to ring, store next to clean values */
igb_alloc_rx_buffers(rx_ring, count);
rx_ring->next_to_clean = rx_ntc;