Kok, Auke wrote: > Marc Sigler wrote: >> Hello everyone, >> >> I have several systems with three integrated Intel 82559 (I *think*). >> >> Does someone know if these boards support hardware interrupt >> mitigation? I.e. is it possible to configure them to raise an IRQ >> only if their hardware buffer is full OR if some given time (say 1 >> ms) has passed and packets are available in their hardware buffer. >> >> I've been using the eepro100 driver up to now, but I'm about to try >> the e100 driver. Would I have to use NAPI? Or is this an orthogonal >> feature? > > the software developers manual for this part is available on our > e1000.sf.net page here: > > http://downloads.sourceforge.net/e1000/OpenSDM_55x_10c.pdf?modtime=10400 83200&big_mirror=0 > > e100 hardware (as far as I can see from the specs) doesn't support > any irq mitigation, so you'll need to run in NAPI mode if you want to > throttle irq's. the in-kernel e100 already runs in NAPI mode, so > that's already covered. > > beware that the eepro100 driver is scheduled for removal (2.6.25 or > so). We support mitigation of interrupts in a downloadable microcode on only a few pieces of hardware (revision id specific) in e100.c (see e100_setup_ucode) If you really really wanted mitigation you could probably backport the microcode from the e100 driver in the 2.4.35 kernel for your specific hardware. This driver is versioned 2.X. Beyond that I can't really offer much help in this case, but would certainly accept patches! Jesse - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
