diff options
| author | Ioana Ciocoi Radulescu <ruxandra.radulescu@nxp.com> | 2018-10-08 14:16:31 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-08 11:05:05 -0700 |
| commit | 68049a5f4dcefdad248f37201a30461f687b0719 (patch) | |
| tree | 6f8ba19e9c50ff9095c5093dc56fa770c7ed7731 /drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | |
| parent | 9e19dabc0559306eed523835dd00376d681ee866 (diff) | |
dpaa2-eth: Don't account Tx confirmation frames on NAPI poll
Until now, both Rx and Tx confirmation frames handled during
NAPI poll were counted toward the NAPI budget. However, Tx
confirmations are lighter to process than Rx frames, which can
skew the amount of work actually done inside one NAPI cycle.
Update the code to only count Rx frames toward the NAPI budget
and set a separate threshold on how many Tx conf frames can be
processed in one poll cycle.
The NAPI poll routine stops when either the budget is consumed
by Rx frames or when Tx confirmation frames reach this threshold.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h index 7a7a3e7bcde2..452a8e9c4f0e 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h @@ -40,6 +40,11 @@ */ #define DPAA2_ETH_TAILDROP_THRESH (64 * 1024) +/* Maximum number of Tx confirmation frames to be processed + * in a single NAPI call + */ +#define DPAA2_ETH_TXCONF_PER_NAPI 256 + /* Buffer quota per queue. Must be large enough such that for minimum sized * frames taildrop kicks in before the bpool gets depleted, so we compute * how many 64B frames fit inside the taildrop threshold and add a margin |