forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions for the UDP protocol.
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*
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* Version: @(#)udp.h 1.0.2 04/28/93
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*
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* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_UDP_H
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#define _LINUX_UDP_H
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#include <net/inet_sock.h>
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#include <linux/skbuff.h>
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#include <net/netns/hash.h>
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#include <uapi/linux/udp.h>
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static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
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{
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return (struct udphdr *)skb_transport_header(skb);
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}
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static inline struct udphdr *inner_udp_hdr(const struct sk_buff *skb)
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{
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return (struct udphdr *)skb_inner_transport_header(skb);
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}
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#define UDP_HTABLE_SIZE_MIN (CONFIG_BASE_SMALL ? 128 : 256)
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static inline u32 udp_hashfn(const struct net *net, u32 num, u32 mask)
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{
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return (num + net_hash_mix(net)) & mask;
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}
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struct udp_sock {
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/* inet_sock has to be the first member */
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struct inet_sock inet;
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#define udp_port_hash inet.sk.__sk_common.skc_u16hashes[0]
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#define udp_portaddr_hash inet.sk.__sk_common.skc_u16hashes[1]
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#define udp_portaddr_node inet.sk.__sk_common.skc_portaddr_node
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int pending; /* Any pending frames ? */
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unsigned int corkflag; /* Cork is required */
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__u8 encap_type; /* Is this an Encapsulation socket? */
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unsigned char no_check6_tx:1,/* Send zero UDP6 checksums on TX? */
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no_check6_rx:1;/* Allow zero UDP6 checksums on RX? */
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/*
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* Following member retains the information to create a UDP header
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* when the socket is uncorked.
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*/
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__u16 len; /* total length of pending frames */
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/*
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* Fields specific to UDP-Lite.
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*/
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__u16 pcslen;
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__u16 pcrlen;
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/* indicator bits used by pcflag: */
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#define UDPLITE_BIT 0x1 /* set by udplite proto init function */
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#define UDPLITE_SEND_CC 0x2 /* set via udplite setsockopt */
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#define UDPLITE_RECV_CC 0x4 /* set via udplite setsocktopt */
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__u8 pcflag; /* marks socket as UDP-Lite if > 0 */
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__u8 unused[3];
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/*
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* For encapsulation sockets.
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*/
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int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
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void (*encap_destroy)(struct sock *sk);
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/* GRO functions for UDP socket */
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struct sk_buff ** (*gro_receive)(struct sock *sk,
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struct sk_buff **head,
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struct sk_buff *skb);
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int (*gro_complete)(struct sock *sk,
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struct sk_buff *skb,
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int nhoff);
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};
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static inline struct udp_sock *udp_sk(const struct sock *sk)
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{
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return (struct udp_sock *)sk;
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}
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static inline void udp_set_no_check6_tx(struct sock *sk, bool val)
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{
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udp_sk(sk)->no_check6_tx = val;
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}
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static inline void udp_set_no_check6_rx(struct sock *sk, bool val)
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{
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udp_sk(sk)->no_check6_rx = val;
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}
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static inline bool udp_get_no_check6_tx(struct sock *sk)
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{
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return udp_sk(sk)->no_check6_tx;
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}
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static inline bool udp_get_no_check6_rx(struct sock *sk)
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{
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return udp_sk(sk)->no_check6_rx;
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}
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#define udp_portaddr_for_each_entry(__sk, list) \
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hlist_for_each_entry(__sk, list, __sk_common.skc_portaddr_node)
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#define udp_portaddr_for_each_entry_rcu(__sk, list) \
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hlist_for_each_entry_rcu(__sk, list, __sk_common.skc_portaddr_node)
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#define IS_UDPLITE(__sk) (udp_sk(__sk)->pcflag)
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#endif /* _LINUX_UDP_H */
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