[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / net / dn.h

#ifndef _NET_DN_H
#define _NET_DN_H

#include <linux/dn.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <asm/byteorder.h>

#define dn_ntohs(x) le16_to_cpu(x)
#define dn_htons(x) cpu_to_le16(x)

struct dn_scp                                   /* Session Control Port */
{
        unsigned char           state;
#define DN_O     1                      /* Open                 */
#define DN_CR    2                      /* Connect Receive      */
#define DN_DR    3                      /* Disconnect Reject    */
#define DN_DRC   4                      /* Discon. Rej. Complete*/
#define DN_CC    5                      /* Connect Confirm      */
#define DN_CI    6                      /* Connect Initiate     */
#define DN_NR    7                      /* No resources         */
#define DN_NC    8                      /* No communication     */
#define DN_CD    9                      /* Connect Delivery     */
#define DN_RJ    10                     /* Rejected             */
#define DN_RUN   11                     /* Running              */
#define DN_DI    12                     /* Disconnect Initiate  */
#define DN_DIC   13                     /* Disconnect Complete  */
#define DN_DN    14                     /* Disconnect Notificat */
#define DN_CL    15                     /* Closed               */
#define DN_CN    16                     /* Closed Notification  */

        __le16          addrloc;
        __le16          addrrem;
        __u16          numdat;
        __u16          numoth;
        __u16          numoth_rcv;
        __u16          numdat_rcv;
        __u16          ackxmt_dat;
        __u16          ackxmt_oth;
        __u16          ackrcv_dat;
        __u16          ackrcv_oth;
        __u8           flowrem_sw;
	__u8           flowloc_sw;
#define DN_SEND         2
#define DN_DONTSEND     1
#define DN_NOCHANGE     0
	__u16		flowrem_dat;
	__u16		flowrem_oth;
	__u16		flowloc_dat;
	__u16		flowloc_oth;
	__u8		services_rem;
	__u8		services_loc;
	__u8		info_rem;
	__u8		info_loc;

	__u16		segsize_rem;
	__u16		segsize_loc;

	__u8		nonagle;
	__u8		multi_ireq;
	__u8		accept_mode;
	unsigned long		seg_total; /* Running total of current segment */

	struct optdata_dn     conndata_in;
	struct optdata_dn     conndata_out;
	struct optdata_dn     discdata_in;
	struct optdata_dn     discdata_out;
        struct accessdata_dn  accessdata;

        struct sockaddr_dn addr; /* Local address  */
	struct sockaddr_dn peer; /* Remote address */

	/*
	 * In this case the RTT estimation is not specified in the
	 * docs, nor is any back off algorithm. Here we follow well
	 * known tcp algorithms with a few small variations.
	 *
	 * snd_window: Max number of packets we send before we wait for
	 *             an ack to come back. This will become part of a
	 *             more complicated scheme when we support flow
	 *             control.
	 *
	 * nsp_srtt:   Round-Trip-Time (x8) in jiffies. This is a rolling
	 *             average.
	 * nsp_rttvar: Round-Trip-Time-Varience (x4) in jiffies. This is the
	 *             varience of the smoothed average (but calculated in
	 *             a simpler way than for normal statistical varience
	 *             calculations).
	 *
	 * nsp_rxtshift: Backoff counter. Value is zero normally, each time
	 *               a packet is lost is increases by one until an ack
	 *               is received. Its used to index an array of backoff
	 *               multipliers.
	 */
#define NSP_MIN_WINDOW 1
#define NSP_MAX_WINDOW (0x07fe)
	unsigned long max_window;
	unsigned long snd_window;
#define NSP_INITIAL_SRTT (HZ)
	unsigned long nsp_srtt;
#define NSP_INITIAL_RTTVAR (HZ*3)
	unsigned long nsp_rttvar;
#define NSP_MAXRXTSHIFT 12
	unsigned long nsp_rxtshift;

	/*
	 * Output queues, one for data, one for otherdata/linkservice
	 */
	struct sk_buff_head data_xmit_queue;
	struct sk_buff_head other_xmit_queue;

	/*
	 * Input queue for other data
	 */
	struct sk_buff_head other_receive_queue;
	int other_report;

	/*
	 * Stuff to do with the slow timer
	 */
	unsigned long stamp;          /* time of last transmit */
	unsigned long persist;
	int (*persist_fxn)(struct sock *sk);
	unsigned long keepalive;
	void (*keepalive_fxn)(struct sock *sk);

	/*
	 * This stuff is for the fast timer for delayed acks
	 */
	struct timer_list delack_timer;
	int delack_pending;
	void (*delack_fxn)(struct sock *sk);

};

static inline struct dn_scp *DN_SK(struct sock *sk)
{
	return (struct dn_scp *)(sk + 1);
}

/*
 * src,dst : Source and Destination DECnet addresses
 * hops : Number of hops through the network
 * dst_port, src_port : NSP port numbers
 * services, info : Useful data extracted from conninit messages
 * rt_flags : Routing flags byte
 * nsp_flags : NSP layer flags byte
 * segsize : Size of segment
 * segnum : Number, for data, otherdata and linkservice
 * xmit_count : Number of times we've transmitted this skb
 * stamp : Time stamp of most recent transmission, used in RTT calculations
 * iif: Input interface number
 *
 * As a general policy, this structure keeps all addresses in network
 * byte order, and all else in host byte order. Thus dst, src, dst_port
 * and src_port are in network order. All else is in host order.
 * 
 */
#define DN_SKB_CB(skb) ((struct dn_skb_cb *)(skb)->cb)
struct dn_skb_cb {
	__le16 dst;
	__le16 src;
	__u16 hops;
	__le16 dst_port;
	__le16 src_port;
	__u8 services;
	__u8 info;
	__u8 rt_flags;
	__u8 nsp_flags;
	__u16 segsize;
	__u16 segnum;
	__u16 xmit_count;
	unsigned long stamp;
	int iif;
};

static inline __le16 dn_eth2dn(unsigned char *ethaddr)
{
	return dn_htons(ethaddr[4] | (ethaddr[5] << 8));
}

static inline __le16 dn_saddr2dn(struct sockaddr_dn *saddr)
{
	return *(__le16 *)saddr->sdn_nodeaddr;
}

static inline void dn_dn2eth(unsigned char *ethaddr, __le16 addr)
{
	__u16 a = dn_ntohs(addr);
	ethaddr[0] = 0xAA;
	ethaddr[1] = 0x00;
	ethaddr[2] = 0x04;
	ethaddr[3] = 0x00;
	ethaddr[4] = (__u8)(a & 0xff);
	ethaddr[5] = (__u8)(a >> 8);
}

static inline void dn_sk_ports_copy(struct flowi *fl, struct dn_scp *scp)
{
	fl->uli_u.dnports.sport = scp->addrloc;
	fl->uli_u.dnports.dport = scp->addrrem;
	fl->uli_u.dnports.objnum = scp->addr.sdn_objnum;
	if (fl->uli_u.dnports.objnum == 0) {
		fl->uli_u.dnports.objnamel = (__u8)dn_ntohs(scp->addr.sdn_objnamel);
		memcpy(fl->uli_u.dnports.objname, scp->addr.sdn_objname, 16);
	}
}

extern unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu);

#define DN_MENUVER_ACC 0x01
#define DN_MENUVER_USR 0x02
#define DN_MENUVER_PRX 0x04
#define DN_MENUVER_UIC 0x08

extern struct sock *dn_sklist_find_listener(struct sockaddr_dn *addr);
extern struct sock *dn_find_by_skb(struct sk_buff *skb);
#define DN_ASCBUF_LEN 9
extern char *dn_addr2asc(__u16, char *);
extern int dn_destroy_timer(struct sock *sk);

extern int dn_sockaddr2username(struct sockaddr_dn *addr, unsigned char *buf, unsigned char type);
extern int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *addr, unsigned char *type);

extern void dn_start_slow_timer(struct sock *sk);
extern void dn_stop_slow_timer(struct sock *sk);

extern __le16 decnet_address;
extern int decnet_debug_level;
extern int decnet_time_wait;
extern int decnet_dn_count;
extern int decnet_di_count;
extern int decnet_dr_count;
extern int decnet_no_fc_max_cwnd;

extern int sysctl_decnet_mem[3];
extern int sysctl_decnet_wmem[3];
extern int sysctl_decnet_rmem[3];

#endif /* _NET_DN_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _NET_DN_H
	2	#define _NET_DN_H
	3
	4	#include <linux/dn.h>
	5	#include <net/sock.h>
c752f073	6	#include <net/tcp.h>
1da177e4 LT	7	#include <asm/byteorder.h>
1da177e4 LT	8
c4ea94ab SW	9	#define dn_ntohs(x) le16_to_cpu(x)
c4ea94ab SW	10	#define dn_htons(x) cpu_to_le16(x)
1da177e4 LT	11
	12	struct dn_scp /* Session Control Port */
	13	{
	14	unsigned char state;
	15	#define DN_O 1 /* Open */
	16	#define DN_CR 2 /* Connect Receive */
	17	#define DN_DR 3 /* Disconnect Reject */
	18	#define DN_DRC 4 /* Discon. Rej. Complete*/
	19	#define DN_CC 5 /* Connect Confirm */
	20	#define DN_CI 6 /* Connect Initiate */
	21	#define DN_NR 7 /* No resources */
	22	#define DN_NC 8 /* No communication */
	23	#define DN_CD 9 /* Connect Delivery */
	24	#define DN_RJ 10 /* Rejected */
	25	#define DN_RUN 11 /* Running */
	26	#define DN_DI 12 /* Disconnect Initiate */
	27	#define DN_DIC 13 /* Disconnect Complete */
	28	#define DN_DN 14 /* Disconnect Notificat */
	29	#define DN_CL 15 /* Closed */
	30	#define DN_CN 16 /* Closed Notification */
	31
c4ea94ab SW	32	__le16 addrloc;
	33	__le16 addrrem;
	34	__u16 numdat;
	35	__u16 numoth;
	36	__u16 numoth_rcv;
	37	__u16 numdat_rcv;
	38	__u16 ackxmt_dat;
	39	__u16 ackxmt_oth;
	40	__u16 ackrcv_dat;
	41	__u16 ackrcv_oth;
	42	__u8 flowrem_sw;
	43	__u8 flowloc_sw;
1da177e4 LT	44	#define DN_SEND 2
	45	#define DN_DONTSEND 1
	46	#define DN_NOCHANGE 0
c4ea94ab SW	47	__u16 flowrem_dat;
	48	__u16 flowrem_oth;
	49	__u16 flowloc_dat;
	50	__u16 flowloc_oth;
	51	__u8 services_rem;
	52	__u8 services_loc;
	53	__u8 info_rem;
	54	__u8 info_loc;
	55
	56	__u16 segsize_rem;
	57	__u16 segsize_loc;
	58
	59	__u8 nonagle;
	60	__u8 multi_ireq;
	61	__u8 accept_mode;
1da177e4 LT	62	unsigned long seg_total; /* Running total of current segment */
	63
	64	struct optdata_dn conndata_in;
	65	struct optdata_dn conndata_out;
	66	struct optdata_dn discdata_in;
	67	struct optdata_dn discdata_out;
	68	struct accessdata_dn accessdata;
	69
	70	struct sockaddr_dn addr; /* Local address */
	71	struct sockaddr_dn peer; /* Remote address */
	72
	73	/*
	74	* In this case the RTT estimation is not specified in the
	75	* docs, nor is any back off algorithm. Here we follow well
	76	* known tcp algorithms with a few small variations.
	77	*
	78	* snd_window: Max number of packets we send before we wait for
	79	* an ack to come back. This will become part of a
	80	* more complicated scheme when we support flow
	81	* control.
	82	*
	83	* nsp_srtt: Round-Trip-Time (x8) in jiffies. This is a rolling
	84	* average.
	85	* nsp_rttvar: Round-Trip-Time-Varience (x4) in jiffies. This is the
	86	* varience of the smoothed average (but calculated in
	87	* a simpler way than for normal statistical varience
	88	* calculations).
	89	*
	90	* nsp_rxtshift: Backoff counter. Value is zero normally, each time
	91	* a packet is lost is increases by one until an ack
	92	* is received. Its used to index an array of backoff
	93	* multipliers.
	94	*/
	95	#define NSP_MIN_WINDOW 1
	96	#define NSP_MAX_WINDOW (0x07fe)
	97	unsigned long max_window;
	98	unsigned long snd_window;
	99	#define NSP_INITIAL_SRTT (HZ)
	100	unsigned long nsp_srtt;
	101	#define NSP_INITIAL_RTTVAR (HZ*3)
	102	unsigned long nsp_rttvar;
	103	#define NSP_MAXRXTSHIFT 12
	104	unsigned long nsp_rxtshift;
	105
	106	/*
	107	* Output queues, one for data, one for otherdata/linkservice
	108	*/
	109	struct sk_buff_head data_xmit_queue;
	110	struct sk_buff_head other_xmit_queue;
	111
	112	/*
	113	* Input queue for other data
	114	*/
	115	struct sk_buff_head other_receive_queue;
	116	int other_report;
	117
	118	/*
	119	* Stuff to do with the slow timer
	120	*/
	121	unsigned long stamp; /* time of last transmit */
	122	unsigned long persist;
	123	int (persist_fxn)(struct sock sk);
	124	unsigned long keepalive;
	125	void (keepalive_fxn)(struct sock sk);
126
127	/*
128	* This stuff is for the fast timer for delayed acks
129	*/
130	struct timer_list delack_timer;
131	int delack_pending;
132	void (delack_fxn)(struct sock sk);
133
134	};
135
136	static inline struct dn_scp DN_SK(struct sock sk)
137	{
138	return (struct dn_scp *)(sk + 1);
139	}
140
141	/*
142	* src,dst : Source and Destination DECnet addresses
143	* hops : Number of hops through the network
144	* dst_port, src_port : NSP port numbers
145	* services, info : Useful data extracted from conninit messages
146	* rt_flags : Routing flags byte
147	* nsp_flags : NSP layer flags byte
148	* segsize : Size of segment
149	* segnum : Number, for data, otherdata and linkservice
150	* xmit_count : Number of times we've transmitted this skb
151	* stamp : Time stamp of most recent transmission, used in RTT calculations
152	* iif: Input interface number
153	*
154	* As a general policy, this structure keeps all addresses in network
155	* byte order, and all else in host byte order. Thus dst, src, dst_port
156	* and src_port are in network order. All else is in host order.
157	*
158	*/
159	#define DN_SKB_CB(skb) ((struct dn_skb_cb *)(skb)->cb)
160	struct dn_skb_cb {
c4ea94ab SW	161	__le16 dst;
	162	__le16 src;
	163	__u16 hops;
	164	__le16 dst_port;
	165	__le16 src_port;
	166	__u8 services;
	167	__u8 info;
	168	__u8 rt_flags;
	169	__u8 nsp_flags;
	170	__u16 segsize;
	171	__u16 segnum;
	172	__u16 xmit_count;
1da177e4 LT	173	unsigned long stamp;
	174	int iif;
	175	};
	176
c4ea94ab	177	static inline __le16 dn_eth2dn(unsigned char *ethaddr)
1da177e4	178	{
c4ea94ab	179	return dn_htons(ethaddr[4] \| (ethaddr[5] << 8));
1da177e4 LT	180	}
1da177e4 LT	181
c4ea94ab	182	static inline __le16 dn_saddr2dn(struct sockaddr_dn *saddr)
1da177e4	183	{
c4ea94ab	184	return (__le16 )saddr->sdn_nodeaddr;
1da177e4 LT	185	}
1da177e4 LT	186
c4ea94ab	187	static inline void dn_dn2eth(unsigned char *ethaddr, __le16 addr)
1da177e4	188	{
c4ea94ab	189	__u16 a = dn_ntohs(addr);
1da177e4 LT	190	ethaddr[0] = 0xAA;
	191	ethaddr[1] = 0x00;
	192	ethaddr[2] = 0x04;
	193	ethaddr[3] = 0x00;
c4ea94ab SW	194	ethaddr[4] = (__u8)(a & 0xff);
c4ea94ab SW	195	ethaddr[5] = (__u8)(a >> 8);
1da177e4 LT	196	}
	197
	198	static inline void dn_sk_ports_copy(struct flowi fl, struct dn_scp scp)
	199	{
	200	fl->uli_u.dnports.sport = scp->addrloc;
	201	fl->uli_u.dnports.dport = scp->addrrem;
	202	fl->uli_u.dnports.objnum = scp->addr.sdn_objnum;
	203	if (fl->uli_u.dnports.objnum == 0) {
c4ea94ab	204	fl->uli_u.dnports.objnamel = (__u8)dn_ntohs(scp->addr.sdn_objnamel);
1da177e4 LT	205	memcpy(fl->uli_u.dnports.objname, scp->addr.sdn_objname, 16);
	206	}
	207	}
	208
	209	extern unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu);
	210
	211	#define DN_MENUVER_ACC 0x01
	212	#define DN_MENUVER_USR 0x02
	213	#define DN_MENUVER_PRX 0x04
	214	#define DN_MENUVER_UIC 0x08
	215
	216	extern struct sock dn_sklist_find_listener(struct sockaddr_dn addr);
	217	extern struct sock dn_find_by_skb(struct sk_buff skb);
	218	#define DN_ASCBUF_LEN 9
c4ea94ab	219	extern char dn_addr2asc(__u16, char );
1da177e4 LT	220	extern int dn_destroy_timer(struct sock *sk);
	221
	222	extern int dn_sockaddr2username(struct sockaddr_dn addr, unsigned char buf, unsigned char type);
	223	extern int dn_username2sockaddr(unsigned char data, int len, struct sockaddr_dn addr, unsigned char *type);
	224
	225	extern void dn_start_slow_timer(struct sock *sk);
	226	extern void dn_stop_slow_timer(struct sock *sk);
	227
c4ea94ab	228	extern __le16 decnet_address;
1da177e4 LT	229	extern int decnet_debug_level;
	230	extern int decnet_time_wait;
	231	extern int decnet_dn_count;
	232	extern int decnet_di_count;
	233	extern int decnet_dr_count;
	234	extern int decnet_no_fc_max_cwnd;
	235
1f12bcc9 SW	236	extern int sysctl_decnet_mem[3];
	237	extern int sysctl_decnet_wmem[3];
	238	extern int sysctl_decnet_rmem[3];
	239
1da177e4	240	#endif /* _NET_DN_H */