Messages in this thread | | | From | "Doug Nazar" <> | Date | Tue, 22 Dec 1998 20:10:55 -0600 | Subject | Re: TCP checksum problems |
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On Tue, 22 Dec 1998 11:14:51 -0500 (EST), Richard B. Johnson wrote:
>On Tue, 22 Dec 1998, Doug Nazar wrote: > >> I've been seeing the for quite sometime, and I finally got a bit of time to look through the code. I haven't got quite the hang of it >> all yet. > >> Dec 22 06:46:48 linux02 kernel: csum=0xa479952d, ip_summed=0, nh=0xc107a09c, h=0xc107a0b0, data=0xc107a0b0 >> >....err... The checksum isn't a longword (not an int on i386). It's >a short.
include/linux/skbuff.h shows skb->csum as an unsigned it however it's irrevelant to my point. If the only time I see bad checksums is when the skb->h.raw == skb->data and where the final byte is 0xb0 then perhaps somewhere we are miscalculating something. This is providing that tcp_v4_rcv() is called for every packet which is what I was trying to determine.
Doug Nazar
Phone: (416) 708-1578 Fax: (416) 708-8081
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