af_packet: Don't use skb after dev_queue_xmit()
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From: Stefan Richter on 21 Jan 2010 12:00 Stefan Richter wrote: > I didn't read the start of this thread and may misunderstand the issue, > but I comment anyway...: > > Documentation/DMA-API.txt says the following about (pci_)dma_sync_single > and friends: "All the parameters must be the same as those passed into > the single mapping API." > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/DMA-API.txt;h=5aceb88b3f8b622c8c23ed288f37f42de705c904;hb=HEAD#l367 > > So, it might be considered an API bug --- but it is a documented one. :-) Disregard my comment. I just noticed that there is more qualified discussion of this in the thread "[PATCH] sky2: Fix WARNING: at lib/dma-debug.c:902 check_sync". -- Stefan Richter -=====-==-=- ---= =-=-= http://arcgraph.de/sr/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Michael Breuer on 21 Jan 2010 14:50
On 1/19/2010 3:41 AM, Jarek Poplawski wrote: > On Tue, Jan 19, 2010 at 12:46:24AM -0500, Michael Breuer wrote: > >> So net-net, as far as my TX packet loss issue, sky2 is in the clear. If >> something on the linux side should be informing the switch about >> something then there may still be an issue. If the wifi router should be >> doing something differently, then it's unfortunately likely a 2.4.37 >> kernel issue (That's what dd-wrt is using). >> > IMHO until there is no proof from a sniffer or some regs dumps the > switch and the router are more suspicious than your NIC or linux box. > Then debugging these other things isn't so much interesting from my > POV ;-) > > Anyway, if you only want to get it working (instead of debugging), > it seems you might try moving the dhcp server to the router or maybe > even using two separate servers with their pools - unless I missed > something in your config. > > Jarek P. > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > Postscript: HP has confirmed that the 1400-8g switch doesn't work, "well," in a mixed 100Mb/1000Mb environment, and is dropping DHCP packets. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |