ip_sockglue.c File Reference

#include <linux/module.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/skbuff.h>
#include <linux/ip.h>
#include <linux/icmp.h>
#include <linux/inetdevice.h>
#include <linux/netdevice.h>
#include <linux/slab.h>
#include <net/sock.h>
#include <net/ip.h>
#include <net/icmp.h>
#include <net/tcp_states.h>
#include <linux/udp.h>
#include <linux/igmp.h>
#include <linux/netfilter.h>
#include <linux/route.h>
#include <linux/mroute.h>
#include <net/inet_ecn.h>
#include <net/route.h>
#include <net/xfrm.h>
#include <net/compat.h>
#include <net/ip_fib.h>
#include <linux/errqueue.h>
#include <asm/uaccess.h>

Go to the source code of this file.

Macros
#define	IP_CMSG_PKTINFO   1
#define	IP_CMSG_TTL   2
#define	IP_CMSG_TOS   4
#define	IP_CMSG_RECVOPTS   8
#define	IP_CMSG_RETOPTS   16
#define	IP_CMSG_PASSSEC   32
#define	IP_CMSG_ORIGDSTADDR   64
#define	PKTINFO_SKB_CB(__skb)   ((struct in_pktinfo *)((__skb)->cb))

Functions
void	ip_cmsg_recv (struct msghdr *msg, struct sk_buff *skb)
	EXPORT_SYMBOL (ip_cmsg_recv)
int	ip_cmsg_send (struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc)
int	ip_ra_control (struct sock *sk, unsigned char on, void(*destructor)(struct sock *))
void	ip_icmp_error (struct sock *sk, struct sk_buff *skb, int err, __be16 port, u32 info, u8 *payload)
void	ip_local_error (struct sock *sk, int err, __be32 daddr, __be16 port, u32 info)
int	ip_recv_error (struct sock *sk, struct msghdr *msg, int len)
void	ipv4_pktinfo_prepare (struct sk_buff *skb)
int	ip_setsockopt (struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen)
	EXPORT_SYMBOL (ip_setsockopt)
int	ip_getsockopt (struct sock *sk, int level, int optname, char __user *optval, int __user *optlen)
	EXPORT_SYMBOL (ip_getsockopt)

Variables
struct ip_ra_chain __rcu *	ip_ra_chain

Macro Definition Documentation

#define IP_CMSG_ORIGDSTADDR   64

Definition at line 54 of file ip_sockglue.c.

#define IP_CMSG_PASSSEC   32

Definition at line 53 of file ip_sockglue.c.

#define IP_CMSG_PKTINFO   1

Definition at line 48 of file ip_sockglue.c.

#define IP_CMSG_RECVOPTS   8

Definition at line 51 of file ip_sockglue.c.

#define IP_CMSG_RETOPTS   16

Definition at line 52 of file ip_sockglue.c.

#define IP_CMSG_TOS   4

Definition at line 50 of file ip_sockglue.c.

#define IP_CMSG_TTL   2

Definition at line 49 of file ip_sockglue.c.

#define PKTINFO_SKB_CB

(

__skb

)

((struct in_pktinfo *)((__skb)->cb))

Definition at line 59 of file ip_sockglue.c.

Function Documentation

EXPORT_SYMBOL

(

ip_cmsg_recv

)

EXPORT_SYMBOL

(

ip_setsockopt

)

EXPORT_SYMBOL

(

ip_getsockopt

)

void ip_cmsg_recv	(	struct msghdr *	msg,
		struct sk_buff *	skb
	)

Definition at line 148 of file ip_sockglue.c.

int ip_cmsg_send	(	struct net *	net,
		struct msghdr *	msg,
		struct ipcm_cookie *	ipc
	)

Definition at line 190 of file ip_sockglue.c.

int ip_getsockopt	(	struct sock *	sk,
		int	level,
		int	optname,
		char __user *	optval,
		int __user *	optlen
	)

Definition at line 1340 of file ip_sockglue.c.

void ip_icmp_error	(	struct sock *	sk,
		struct sk_buff *	skb,
		int	err,
		__be16	port,
		u32	info,
		u8 *	payload
	)

Definition at line 302 of file ip_sockglue.c.

void ip_local_error	(	struct sock *	sk,
		int	err,
		__be32	daddr,
		__be16	port,
		u32	info
	)

Definition at line 331 of file ip_sockglue.c.

int ip_ra_control	(	struct sock *	sk,
		unsigned char	on,
		void(*)(struct sock *)	destructor
	)

Definition at line 248 of file ip_sockglue.c.

int ip_recv_error	(	struct sock *	sk,
		struct msghdr *	msg,
		int	len
	)

Definition at line 371 of file ip_sockglue.c.

int ip_setsockopt	(	struct sock *	sk,
		int	level,
		int	optname,
		char __user *	optval,
		unsigned int	optlen
	)

Definition at line 1050 of file ip_sockglue.c.

void ipv4_pktinfo_prepare

(

struct sk_buff *

skb

)

ipv4_pktinfo_prepare - transfert some info from rtable to skb : socket : buffer

To support IP_CMSG_PKTINFO option, we store rt_iif and specific destination in skb->cb[] before dst drop. This way, receiver doesnt make cache line misses to read rtable.

Definition at line 1036 of file ip_sockglue.c.

Variable Documentation

struct ip_ra_chain __rcu* ip_ra_chain

Definition at line 236 of file ip_sockglue.c.