| /* |
| * INET An implementation of the TCP/IP protocol suite for the LINUX |
| * operating system. INET is implemented using the BSD Socket |
| * interface as the means of communication with the user level. |
| * |
| * Definitions for the 'struct sk_buff' memory handlers. |
| * |
| * Version: @(#)skbuff.h 1.0.4 05/20/93 |
| * |
| * Authors: Ross Biro, <bir7@leland.Stanford.Edu> |
| * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| * Corey Minyard <wf-rch!minyard@relay.EU.net> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| #ifndef _SKBUFF_H |
| #define _SKBUFF_H |
| |
| |
| #define FREE_READ 1 |
| #define FREE_WRITE 0 |
| |
| |
| struct sk_buff { |
| struct sk_buff *next; |
| struct sk_buff *prev; |
| struct sk_buff *link3; |
| struct sock *sk; |
| volatile unsigned long when; /* used to compute rtt's */ |
| struct device *dev; |
| void *mem_addr; |
| union { |
| struct tcphdr *th; |
| struct ethhdr *eth; |
| struct iphdr *iph; |
| struct udphdr *uh; |
| struct arphdr *arp; |
| unsigned char *raw; |
| unsigned long seq; |
| } h; |
| unsigned long mem_len; |
| unsigned long len; |
| unsigned long saddr; |
| unsigned long daddr; |
| int magic; |
| volatile char acked, |
| used, |
| free, |
| arp, |
| urg_used, |
| lock; |
| unsigned char tries; |
| }; |
| |
| #define SK_WMEM_MAX 8192 |
| #define SK_RMEM_MAX 32767 |
| |
| |
| extern void print_skb(struct sk_buff *); |
| extern void kfree_skb(struct sk_buff *skb, int rw); |
| extern void lock_skb(struct sk_buff *skb); |
| extern void unlock_skb(struct sk_buff *skb, int rw); |
| |
| #endif /* _SKBUFF_H */ |
