netdev - "right" way to requeue a packet to IP from ip

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Mon, 23 Nov 2009 11:40:09 -0800
From:	David Meyer <dmm@...-5.net>
To:	netdev@...r.kernel.org
Subject: "right" way to requeue a packet to IP from ip_rcv?


	Folks,

	I'm receiving an encapsulated packet that looks like

		outer   iph
		outer   udph
		foreign header
		inner   iph
		inner   udph
		data


	What I'd like to do is strip off the outer IP, UDP and
	foreign headers in ip_rcv and requeue the packet to IP to
	process the rest of the packet (inner IP header,
	etc). What's the clean way to do this?  In freeBSD you
	might do something like

	(*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen);

	but I'm not exactly sure what the analogous thing is for
	linux. Any insight greatly appreciated.

	Thnx,

	Dave


	

Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)