diff options
Diffstat (limited to 'target/linux/mpc85xx/patches-3.10/200-fix_gianfar_napi_poll.patch')
| -rw-r--r-- | target/linux/mpc85xx/patches-3.10/200-fix_gianfar_napi_poll.patch | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/mpc85xx/patches-3.10/200-fix_gianfar_napi_poll.patch b/target/linux/mpc85xx/patches-3.10/200-fix_gianfar_napi_poll.patch new file mode 100644 index 0000000000..a1877be921 --- /dev/null +++ b/target/linux/mpc85xx/patches-3.10/200-fix_gianfar_napi_poll.patch @@ -0,0 +1,109 @@ +--- a/drivers/net/ethernet/freescale/gianfar.c ++++ b/drivers/net/ethernet/freescale/gianfar.c +@@ -2835,7 +2835,7 @@ static int gfar_poll(struct napi_struct + struct gfar_priv_rx_q *rx_queue = NULL; + int work_done = 0, work_done_per_q = 0; + int i, budget_per_q = 0; +- int has_tx_work; ++ int has_tx_work = 0; + unsigned long rstat_rxf; + int num_act_queues; + +@@ -2850,62 +2850,48 @@ static int gfar_poll(struct napi_struct + if (num_act_queues) + budget_per_q = budget/num_act_queues; + +- while (1) { +- has_tx_work = 0; +- for_each_set_bit(i, &gfargrp->tx_bit_map, priv->num_tx_queues) { +- tx_queue = priv->tx_queue[i]; +- /* run Tx cleanup to completion */ +- if (tx_queue->tx_skbuff[tx_queue->skb_dirtytx]) { +- gfar_clean_tx_ring(tx_queue); +- has_tx_work = 1; +- } +- } +- +- for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { +- /* skip queue if not active */ +- if (!(rstat_rxf & (RSTAT_CLEAR_RXF0 >> i))) +- continue; +- +- rx_queue = priv->rx_queue[i]; +- work_done_per_q = +- gfar_clean_rx_ring(rx_queue, budget_per_q); +- work_done += work_done_per_q; +- +- /* finished processing this queue */ +- if (work_done_per_q < budget_per_q) { +- /* clear active queue hw indication */ +- gfar_write(®s->rstat, +- RSTAT_CLEAR_RXF0 >> i); +- rstat_rxf &= ~(RSTAT_CLEAR_RXF0 >> i); +- num_act_queues--; +- +- if (!num_act_queues) +- break; +- /* recompute budget per Rx queue */ +- budget_per_q = +- (budget - work_done) / num_act_queues; +- } ++ for_each_set_bit(i, &gfargrp->tx_bit_map, priv->num_tx_queues) { ++ tx_queue = priv->tx_queue[i]; ++ /* run Tx cleanup to completion */ ++ if (tx_queue->tx_skbuff[tx_queue->skb_dirtytx]) { ++ gfar_clean_tx_ring(tx_queue); ++ has_tx_work = 1; + } ++ } + +- if (work_done >= budget) +- break; ++ for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { ++ /* skip queue if not active */ ++ if (!(rstat_rxf & (RSTAT_CLEAR_RXF0 >> i))) ++ continue; ++ ++ rx_queue = priv->rx_queue[i]; ++ work_done_per_q = gfar_clean_rx_ring(rx_queue, budget_per_q); ++ work_done += work_done_per_q; ++ ++ /* finished processing this queue */ ++ if (work_done_per_q < budget_per_q) { ++ /* clear active queue hw indication */ ++ gfar_write(®s->rstat, RSTAT_CLEAR_RXF0 >> i); ++ num_act_queues--; + +- if (!num_act_queues && !has_tx_work) { ++ if (!num_act_queues) ++ break; ++ } ++ } + +- napi_complete(napi); ++ if (!num_act_queues && !has_tx_work) { ++ napi_complete(napi); + +- /* Clear the halt bit in RSTAT */ +- gfar_write(®s->rstat, gfargrp->rstat); ++ /* Clear the halt bit in RSTAT */ ++ gfar_write(®s->rstat, gfargrp->rstat); + +- gfar_write(®s->imask, IMASK_DEFAULT); ++ gfar_write(®s->imask, IMASK_DEFAULT); + +- /* If we are coalescing interrupts, update the timer +- * Otherwise, clear it +- */ +- gfar_configure_coalescing(priv, gfargrp->rx_bit_map, +- gfargrp->tx_bit_map); +- break; +- } ++ /* If we are coalescing interrupts, update the timer ++ * Otherwise, clear it ++ */ ++ gfar_configure_coalescing(priv, gfargrp->rx_bit_map, ++ gfargrp->tx_bit_map); + } + + return work_done; |