Re: [openss7] Questions

[Chuck Winters <cwinters@atl.lmco.com>]

Brian,
	Thanks for the info.  I am tearing into the kernel sources trying to
figure out how all this works. Maybe I can even be of some help in 20 or
30 years!!

Later,
Chuck
"Brian F. G. Bidulock" wrote:
> 
> Chuck,
> 
> The transport protocol is notified by IP of incoming packets for
> IPPROTO_SCTP (protocol number 132) and ICMP packets (errors) for
> IPPROTO_SCTP (protocol number 132) via the sctp_v4_rcv and sctp_v4_err
> hooks.  The actual registration is performed using the Linux
> inet_add_protocol and inet_del_protocol registration and deregistration
> functions.  SCTP does this at the bottom of linux/net/ipv4/sctp_prot.c.
> This is the only hooks upwards from IP that are necessary.
> 
> I use __skb_pull instead of skb_pull because I am sure that the
> test len <= skb->len is going to succeed and don't want skb_pull
> to waste time checking it.  Similar for skb_trim.
> 
> --
> Brian F. G. Bidulock    ¦ The reasonable man adapts himself to the ¦
> bidulock@openss7.org    ¦ world; the unreasonable one persists in  ¦
> http://www.openss7.org/ ¦ trying  to adapt the  world  to himself. ¦
>                         ¦ Therefore  all  progress  depends on the ¦
>                         ¦ unreasonable man. -- George Bernard Shaw ¦

--
Chuck Winters                            | Email:  cwinters@atl.lmco.com
Distributed Processing Laboratory        | Phone:  856-338-3987
Lockheed Martin Advanced Technology Labs |
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