Lists

Terms and Conditions
Lists hosted on this site
Email the Postmaster
Tips for posting to public mailing lists

mbuf data access

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

mbuf data access

Subject: mbuf data access
From: "email@hidden" <email@hidden>
Date: Mon, 5 Jun 2006 16:39:07 +0200

Hi all,

I'm writing some NKE UDP filter with packet mangling + packet re- injection, when i have a mbuf (in chain) with flags set to MBUF_PKTHDR i've got an access to data using MTOD(tMbuf, caddr_t), at this point every things works fine but when the mbuf in the chain is marked as MBUF_EXT nothing work at all.

- How can have access to packet data ?

- mbuf_len() on a mbuf (marked as MBUF_EXT) in a mbuf chain
is a valid length ?

- when modifying such packets do i need to compute some checksums ?


Any tips, clarifications,..., will be appreciate.

* My MTOD macro is:
#define MTOD(m, t)      ((t)(mbuf_data(m)))

Jean-Yves Cases
email@hidden

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden



Prev by Date:
Re: What exactly does DKIOCCDREAD return for	kCDSectorAreaSubChannelQ?

Next by Date:
launchd's job jettison logic (Was: Re: StartupItems)

Previous by thread:
Mailing list etiquette [was Re: Re2: GNU-Darwin: missing code in	Darwin2]

Next by thread:
Re: mbuf data access

Index(es):

Date
Thread