From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Date: Fri, 19 Sep 2003 04:38:47 +0000 Subject: Re: NS83820 2.6.0-test5 driver seems unstable on IA64 Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Fri, Sep 19, 2003 at 02:16:29PM +1000, Peter Chubb wrote: > The obvious approach of realigning the SKB by 2 bytes seems not to > work. Could you be more detailed about the "obvious approach"? ie show the diff of what you changed. Several other NIC driver "alias" (as davidm describes it) the buffer by reserving two bytes at the beginning of the recieve buffer where header and payload data are DMAd on inbound traffic. I look to my favorite driver, tulip, for an example and promptly get confused. interrupt.c:tulip_rx() calls skb_reserve(xx,2) to force alignment when replenishing RX buffers while a note in tulip_core.c:tulip_init_ring() clearly says not to. I haven't looked further to figure out the difference. hth, grant