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net: nps_enet: Disable interrupts before napi reschedule

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Since NAPI works by shutting down event interrupts when theres
work and turning them on when theres none, the net driver must
make sure that interrupts are disabled when it reschedules polling.
By calling napi_reschedule, the driver switches to polling mode,
therefor there should be no interrupt interference.
Any received packets will be handled in nps_enet_poll by polling the HW
indication of received packet until all packets are handled.

Signed-off-by: Elad Kanfi <eladkan@mellanox.com>
Acked-by: Noam Camus <noamca@mellanox.com>
Tested-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Elad Kanfi 2016-05-26 15:00:06 +03:00 committed by David S. Miller
parent 0d08df6c49
commit 86651650d1
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/ezchip/nps_enet.c
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@ -205,8 +205,10 @@ static int nps_enet_poll(struct napi_struct *napi, int budget)
* re-adding ourselves to the poll list.
*/
if (priv->tx_skb && !tx_ctrl_ct)
if (priv->tx_skb && !tx_ctrl_ct) {
nps_enet_reg_set(priv, NPS_ENET_REG_BUF_INT_ENABLE, 0);
napi_reschedule(napi);
}
}
return work_done;