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igb: Add support for byte queue limits.

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This adds support for byte queue limits (BQL)

Since this driver collects bytes count in 'bytecount' field, use it also
in igb_tx_map()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2012-01-04 20:23:36 +00:00 committed by David S. Miller
parent 13acde8fff
commit bdbc063129
2 changed files with 10 additions and 0 deletions
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5
drivers/net/ethernet/intel/igb/igb.h
View File

@ -447,4 +447,9 @@ static inline s32 igb_get_phy_info(struct e1000_hw *hw)
return 0;
}
static inline struct netdev_queue *txring_txq(const struct igb_ring *tx_ring)
{
return netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index);
}
#endif /* _IGB_H_ */

5
drivers/net/ethernet/intel/igb/igb_main.c
View File

@ -3201,6 +3201,7 @@ static void igb_clean_tx_ring(struct igb_ring *tx_ring)
buffer_info = &tx_ring->tx_buffer_info[i];
igb_unmap_and_free_tx_resource(tx_ring, buffer_info);
}
netdev_tx_reset_queue(txring_txq(tx_ring));
size = sizeof(struct igb_tx_buffer) * tx_ring->count;
memset(tx_ring->tx_buffer_info, 0, size);
@ -4238,6 +4239,8 @@ static void igb_tx_map(struct igb_ring *tx_ring,
frag++;
}
netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
/* write last descriptor with RS and EOP bits */
cmd_type |= cpu_to_le32(size) | cpu_to_le32(IGB_TXD_DCMD);
tx_desc->read.cmd_type_len = cmd_type;
@ -5777,6 +5780,8 @@ static bool igb_clean_tx_irq(struct igb_q_vector *q_vector)
}
}
netdev_tx_completed_queue(txring_txq(tx_ring),
total_packets, total_bytes);
i += tx_ring->count;
tx_ring->next_to_clean = i;
u64_stats_update_begin(&tx_ring->tx_syncp);