From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johann Baudy Subject: Re: [PATCH] TX_RING and packet mmap Date: Wed, 15 Apr 2009 15:14:22 +0200 Message-ID: <7e0dd21a0904150614y301a01e4rdec1fe4f9a14c13f@mail.gmail.com> References: <7e0dd21a0904081406w31da460pe1c0c7153538f283@mail.gmail.com> <20090412103212.GA28397@ioremap.net> <7e0dd21a0904120423v4296898fl7ce82ec8c3e42d3a@mail.gmail.com> <20090412142451.GA2694@ioremap.net> <7e0dd21a0904121227n3b03f2c7v8bf30c45667603a1@mail.gmail.com> <20090412195203.GA11899@ioremap.net> <7e0dd21a0904121330p3fe9b27bx1cd16a6c8fb9b574@mail.gmail.com> <20090412205334.GA14345@ioremap.net> <7e0dd21a0904121631u3fc7c676r12eb7e71fe87e02b@mail.gmail.com> <20090415071023.GA26986@ioremap.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Herbert Xu , netdev@vger.kernel.org, "David S. Miller" , Patrick McHardy , jamal To: Evgeniy Polyakov Return-path: Received: from mail-fx0-f158.google.com ([209.85.220.158]:40608 "EHLO mail-fx0-f158.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752688AbZDONOY (ORCPT ); Wed, 15 Apr 2009 09:14:24 -0400 Received: by fxm2 with SMTP id 2so2903439fxm.37 for ; Wed, 15 Apr 2009 06:14:22 -0700 (PDT) In-Reply-To: <20090415071023.GA26986@ioremap.net> Sender: netdev-owner@vger.kernel.org List-ID: Thanks for your reply, Evgeniy, > It can work but do not place it into skb itself, but into shared area, > which is slab allocated and does not suffer from size restrictions. Ok > You can also add shared-info destructor, which could be used by other Kind of: struct skb_shared_info { atomic_t dataref; .... +void (*destructor)(struct sk_buff *skb, void * destructor_arg); +void * destructor_arg; }; Should I call this new destructor from skb_release_data() before kfree(skb->head) ? or in skb_release_head_state()? close to current destructor call Best regards, Johann -- Johann Baudy johaahn@gmail.com