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ixgbe: Track instances of buffer available but no DMA resources present

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This change makes it so that we can track instances of where a packet was
dropped due to a packet being received when there are no DMA buffers
available in the ring.

For some reason this was only being enabled with RSC, however it makes
more sense to always have this feature on so that we can track any cases
where we might drop a buffer due to an Rx ring being full.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2012-03-28 08:03:32 +00:00 committed by Jeff Kirsher
parent 2fbe4526e5
commit a4d4f62916
1 changed files with 3 additions and 3 deletions
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6
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View file

@ -4967,9 +4967,6 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
u64 rsc_count = 0;
u64 rsc_flush = 0;
for (i = 0; i < 16; i++)
adapter->hw_rx_no_dma_resources +=
IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
for (i = 0; i < adapter->num_rx_queues; i++) {
rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
@ -5072,6 +5069,9 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
case ixgbe_mac_82599EB:
for (i = 0; i < 16; i++)
adapter->hw_rx_no_dma_resources +=
IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);