[sky2] hw csum failure with 2.6.17 and Yukon-EC...

From: Daniel J Blueman
Date: Thu Apr 26 2007 - 19:00:50 EST

On my sky2 platform [1], I'm still seeing lockups after some time [2]
with 2.6.21 (including all the -rc kernels). I've found that 'ethtool
-K lan0 rx off' seems to workaround the problem - I'm running with 9k
jumbo frames, but I find the problem with 1500 byte frames also.

Perhaps you need to blacklist this hardware as having RX offload problems too?


--- [1]

sky2 0000:01:00.0: v1.14 addr 0xdfbfc000 irq 16 Yukon-EC (0xb6) rev 1
sky2 eth1: addr 00:03:2d:05:9c:27
sky2 lan0: enabling interface
sky2 lan0: ram buffer 48K
sky2 lan0: Link is up at 1000 Mbps, full duplex, flow control both

--- [2]

kernel: lan0: hw csum failure.
kernel: [__skb_checksum_complete+93/96] __skb_checksum_complete+0x5d/0x60
kernel: [nf_ip_checksum+180/288] nf_ip_checksum+0xb4/0x120
kernel: [tcp_error+375/496] tcp_error+0x177/0x1f0
kernel: [tcp_manip_pkt+196/256] tcp_manip_pkt+0xc4/0x100
kernel: [tcp_error+0/496] tcp_error+0x0/0x1f0
kernel: [nf_conntrack_in+246/1248] nf_conntrack_in+0xf6/0x4e0
kernel: [sock_queue_rcv_skb+213/256] sock_queue_rcv_skb+0xd5/0x100
kernel: [packet_rcv_spkt+0/368] packet_rcv_spkt+0x0/0x170
kernel: [dev_hard_start_xmit+445/544] dev_hard_start_xmit+0x1bd/0x220
kernel: [nf_iterate+99/144] nf_iterate+0x63/0x90
kernel: [__qdisc_run+126/336] __qdisc_run+0x7e/0x150
kernel: [nf_iterate+99/144] nf_iterate+0x63/0x90
kernel: [ip_rcv_finish+0/528] ip_rcv_finish+0x0/0x210
kernel: [nf_hook_slow+89/224] nf_hook_slow+0x59/0xe0
kernel: [ip_rcv_finish+0/528] ip_rcv_finish+0x0/0x210
kernel: [ip_rcv+701/1120] ip_rcv+0x2bd/0x460
kernel: [ip_rcv_finish+0/528] ip_rcv_finish+0x0/0x210
kernel: [packet_rcv_spkt+226/368] packet_rcv_spkt+0xe2/0x170
kernel: [netif_receive_skb+488/752] netif_receive_skb+0x1e8/0x2f0
kernel: [sky2_poll+915/2432] sky2_poll+0x393/0x980
kernel: [e100_rx_alloc_skb+36/144] e100_rx_alloc_skb+0x24/0x90
kernel: [e100_poll+848/992] e100_poll+0x350/0x3e0
kernel: [net_rx_action+92/256] net_rx_action+0x5c/0x100
kernel: [__do_softirq+66/144] __do_softirq+0x42/0x90
kernel: [do_softirq+92/176] do_softirq+0x5c/0xb0
kernel: [handle_edge_irq+0/224] handle_edge_irq+0x0/0xe0
kernel: [irq_exit+90/96] irq_exit+0x5a/0x60
kernel: [do_IRQ+112/176] do_IRQ+0x70/0xb0
kernel: [enqueue_hrtimer+107/272] enqueue_hrtimer+0x6b/0x110
kernel: [common_interrupt+35/40] common_interrupt+0x23/0x28
kernel: [default_idle+42/64] default_idle+0x2a/0x40
kernel: [cpu_idle+62/96] cpu_idle+0x3e/0x60
kernel: [start_kernel+760/912] start_kernel+0x2f8/0x390
kernel: [unknown_bootoption+0/608] unknown_bootoption+0x0/0x260
kernel: =======================
Daniel J Blueman
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