mirror of https://github.com/apache/cloudstack.git
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/*
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* Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free software Foundation, Inc.,
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* 59 Temple Place, suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <skb_context.h>
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#define MODULE_NAME "VNET"
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#define DEBUG 1
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#undef DEBUG
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#include "debug.h"
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SkbContext *SkbContext_create(u32 vnet, u32 addr, int protocol, void *data,
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void (*free_fn)(SkbContext *)){
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SkbContext *context = NULL;
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context = kmalloc(sizeof(SkbContext), GFP_ATOMIC);
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if(!context) goto exit;
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context->vnet = vnet;
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context->addr = addr;
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context->protocol = protocol;
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context->data = data;
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context->free_fn = free_fn;
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context->next = NULL;
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atomic_set(&context ->refcount, 1);
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exit:
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return context;
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}
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void SkbContext_free(SkbContext *context){
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if(!context) return;
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if(context->next) SkbContext_decref(context->next);
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if(context->free_fn) context->free_fn(context);
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context->vnet = 0;
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context->addr = 0;
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context->protocol = 0;
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context->free_fn = NULL;
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context->data = NULL;
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context->next = NULL;
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kfree(context);
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}
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int SkbContext_push(SkbContext **val, u32 vnet, u32 addr, int protocol,
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void *data, void (*free_fn)(SkbContext *)){
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int err = 0;
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SkbContext *context = NULL;
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dprintf("> vnet=%u addr=%u.%u.%u.%u protocol=%d\n",
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vnet, NIPQUAD(addr), protocol);
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context = SkbContext_create(vnet, addr, protocol, data, free_fn);
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if(!context){
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err = -ENOMEM;
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goto exit;
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}
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context->next = *val;
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*val = context;
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exit:
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dprintf("< err=%d\n", err);
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return err;
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}
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int skb_push_context(struct sk_buff *skb, u32 vnet, u32 addr, int protocol,
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void *data, void (*free_fn)(SkbContext *)){
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int err = 0;
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//SkbContext *ctxt = SKB_CONTEXT(skb);
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dprintf("> skb=%p\n", skb);
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//err = SkbContext_push(&ctxt, vnet, addr, protocol, data, free_fn); //todo fixme
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//SKB_CONTEXT(skb) = ctxt;//todo fixme
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dprintf("< err=%d\n", err);
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return err;
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}
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