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[LLC]: skb allocation size for responses

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Allocate the skb for llc responses with the received packet size by
using the size adjustable llc_frame_alloc.
Don't allocate useless extra payload.
Cleanup magic numbers.

So, this fixes oops.
Reported by Jim Westfall:
kernel: skb_over_panic: text:c0541fc7 len:1000 put:997 head:c166ac00 data:c166ac2f tail:0xc166b017 end:0xc166ac80 dev:eth0
kernel: ------------[ cut here ]------------
kernel: kernel BUG at net/core/skbuff.c:95!

Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joonwoo Park
2008-03-31 21:02:47 -07:00
committed by David S. Miller
parent b50660f1fe
commit f83f1768f8
7 changed files with 74 additions and 35 deletions
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7
include/net/llc_sap.h
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@@ -1,5 +1,8 @@
#ifndef LLC_SAP_H
#define LLC_SAP_H
#include <asm/types.h>
/*
* Copyright (c) 1997 by Procom Technology,Inc.
* 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
@@ -19,8 +22,8 @@ struct sock;
extern void llc_sap_rtn_pdu(struct llc_sap *sap, struct sk_buff *skb);
extern void llc_save_primitive(struct sock *sk, struct sk_buff* skb,
unsigned char prim);
extern struct sk_buff *llc_alloc_frame(struct sock *sk,
struct net_device *dev);
extern struct sk_buff *llc_alloc_frame(struct sock *sk, struct net_device *dev,
u8 type, u32 data_size);
extern void llc_build_and_send_test_pkt(struct llc_sap *sap,
struct sk_buff *skb,