From: Hayes Wang <hayeswang@xxxxxxxxxxx> Date: Wed, 12 Nov 2014 06:29:46 +0000 > David Miller [mailto:davem@xxxxxxxxxxxxx] >> Sent: Wednesday, November 12, 2014 1:44 PM > [...] >> What do other USB network drivers do in similar situations? > > According to the usbnet.c, it would make sure to submit the > number of min(10, RX_QLEN(dev)) rx buffers. If there are > not enough rx buffers, it schedule a tasklet for next try. > > The brief flow is as following. > 1. Call open(). > - schedule a tasklet. > 2. Tasklet is called. > if (dev->rxq.qlen < RX_QLEN(dev)) { > - submit rx buffers util the number of > min(10, RX_QLEN(dev)). If the error > occurs, break the loop. > - If the dev->rxq.qlen < RX_QLEN(dev), > schedule the tasklet. > } That sounds like a better recovery model, why don't you mimick it? -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
