From mboxrd@z Thu Jan 1 00:00:00 1970 From: xuwentao@cn.ibm.com To: ben bodley cc: linuxppc-embedded@lists.linuxppc.org Message-ID: <4825691F.002DF1CC.00@d73mta06.au.ibm.com> Date: Mon, 17 Jul 2000 14:21:24 +0800 Subject: Re: Why eth0 does not work Mime-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: I found that the client can not receive packet correctly. I put some printk() in fucntion ei_receive() in file driver/net/8390.c as the following: if (rx_frame.next != next_frame && rx_frame.next != next_frame + 1 && rx_frame.next != next_frame - num_rx_pages && rx_frame.next != next_frame + 1 - num_rx_pages) {() /* the following lines are added by Wentao */ printk("----------rx error---------------------\n"); printk("rx_frame.next = %d,next_frame=%d\n",rx_frame.nex t,next_frame); /* Wentao adds */ printk("num_rx_pages=%d,ei_local->current_page=%d\n\n",n um_rx_pages, ei_local->current_page); /* end of addtion by Wentao */ ..... BTW, the related receive buffer registers are initialized with value(my board has a 32k sram for packet buffer); page start reg: 44 current page reg: 44 page stop reg: 64 boundary poiter: 63 The output in the client is : ....... eth0: National DP83902AV at 12:34:56:78:90:ab, found at 0xf1400000, using IRQ 26. Looking up port of RPC 100003/2 on 7.1.1.21 ----------rx error--------------------- rx_frame.next = 45,next_frame=109 num_rx_pages=20,ei_local->current_page=44 ----------rx error--------------------- rx_frame.next = 46,next_frame=110 num_rx_pages=20,ei_local->current_page=45 ----------rx error--------------------- rx_frame.next = 47,next_frame=111 num_rx_pages=20,ei_local->current_page=46 Device lo is down. ----------rx error--------------------- rx_frame.next = 48,next_frame=112 num_rx_pages=20,ei_local->current_page=47 ----------rx error--------------------- rx_frame.next = 49,next_frame=113 num_rx_pages=20,ei_local->current_page=48 ----------rx error--------------------- rx_frame.next = 50,next_frame=114 num_rx_pages=20,ei_local->current_page=49 Device lo is down. ----------rx error--------------------- rx_frame.next = 51,next_frame=115 num_rx_pages=20,ei_local->current_page=50 ----------rx error--------------------- rx_frame.next = 52,next_frame=116 num_rx_pages=20,ei_local->current_page=51 ----------rx error--------------------- rx_frame.next = 53,next_frame=117 num_rx_pages=20,ei_local->current_page=52 Device lo is down. ----------rx error--------------------- rx_frame.next = 54,next_frame=172 num_rx_pages=20,ei_local->current_page=53 ----------rx error--------------------- rx_frame.next = 55,next_frame=119 num_rx_pages=20,ei_local->current_page=54 ----------rx error--------------------- rx_frame.next = 56,next_frame=120 num_rx_pages=20,ei_local->current_page=55 ----------rx error--------------------- rx_frame.next = 57,next_frame=121 num_rx_pages=20,ei_local->current_page=56 Device lo is down. portmap: server 7.1.1.21 not responding, timed out Root-NFS: Unable to get nfsd port number from server, using default Looking up port of RPC 100005/1 on 7.1.1.21 ----------rx error--------------------- rx_frame.next = 58,next_frame=122 num_rx_pages=20,ei_local->current_page=57 ........ the output of the tcpdump -i eth0 host 7.1.1.5 in the NFS server is: 13:47:08.224173 B arp who-has 7.1.1.21 tell 7.1.1.5 13:47:08.224207 > arp reply 7.1.1.21 (0:20:35:b1:fc:d8) is-at 0:20:35:b1:fc:d8 ( 12:34:56:78:90:ab) 13:47:09.335805 B arp who-has 7.1.1.21 tell 7.1.1.5 13:47:09.335826 > arp reply 7.1.1.21 (0:20:35:b1:fc:d8) is-at 0:20:35:b1:fc:d8 ( 12:34:56:78:90:ab) 13:47:10.447399 B arp who-has 7.1.1.21 tell 7.1.1.5 13:47:10.447413 > arp reply 7.1.1.21 (0:20:35:b1:fc:d8) is-at 0:20:35:b1:fc:d8 ( 12:34:56:78:90:ab) 13:47:13.604779 B arp who-has 7.1.1.21 tell 7.1.1.5 13:47:13.604794 > arp reply 7.1.1.21 (0:20:35:b1:fc:d8) is-at 0:20:35:b1:fc:d8 ( 12:34:56:78:90:ab) ....... I also tried other vlaues for the buffer registers such as page start reg: 0 current page reg: 1 page stop reg: 32 boundary poiter: 0 and also got rx errors. I dont know what to do next. Wentao ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/