Jeff Garzik wrote:
Ayaz Abdulla wrote:
I don't see why the NAPI handler needs to process tx packets. The ISR
will handle all tx processing.
It is a design choice, not a requirement.
Moving non-RX interrupt processing to the NAPI handler can help as loads
increase. The basic idea is to do as much work as possible in the NAPI
handler with NIC interrupts masked. That mitigates global system
per-interrupt overhead even more than an only-RX NAPI scheme.
Several net drivers do TX completion handling in the NAPI handler.
Ok. In that case, the patch needs to be improved.
The following needs to be done when NAPI is enabled:
- remove the tx handling within the ISRs
- mask off the tx interrupts within the ISRs that handle tx processing
- re-enable tx interrupts within the NAPI handler
- add tx handling within the NAPI handler (this patch covers it)
Jeff
-----------------------------------------------------------------------------------
This email message is for the sole use of the intended recipient(s) and may
contain
confidential information. Any unauthorized review, use, disclosure or
distribution
is prohibited. If you are not the intended recipient, please contact the
sender by
reply email and destroy all copies of the original message.
-----------------------------------------------------------------------------------
-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
