Hi Adam,
skb->cb is used by IP protocols also. IPv6 stores struct inet6_skb_parm
(TCP stores struct tcp_skb_cb and inet6_skb_parm is a part of that)
in skb->cb.
Look at ipv6_rcv() where the device index is stored in skb->cb.
Maybe there is conflict between your driver and IPv6.
Regards
Suvidh
"Adam Flizikowski"
<adam_fli@poczta.one To: <linux-net@vger.kernel.org>
t.pl> cc:
Sent by: Subject: IPv6 - why skb->cb is not filled???
linux-net-owner@vger
.kernel.org
14/08/2003 02:52 PM
Hello,
I have added packet numbering at driver level (8139too.c):
- after data is taken from eth and skb reserved i put a number
sprintf(skb->cb,"%lu",pkt_nr) which is ++'ed every pkt
later on, in ip6_input.c i try to read skb->cb and ... it is empty (or has
not proper value).
Whereas when i try to read skb->cb from ip_input.c (ipv4) it is properly
read.
Could you please advice me what can be wrong?
Does ipv6 uses header file other than skbuff.h ??? .. and thus different
skb
struct???
best regards
adam
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