1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * Declarations of AX.25 type objects. 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Alan Cox (GW4PTS) 10/11/93 61da177e4SLinus Torvalds */ 71da177e4SLinus Torvalds #ifndef _AX25_H 81da177e4SLinus Torvalds #define _AX25_H 91da177e4SLinus Torvalds 101da177e4SLinus Torvalds #include <linux/ax25.h> 111da177e4SLinus Torvalds #include <linux/spinlock.h> 121da177e4SLinus Torvalds #include <linux/timer.h> 131da177e4SLinus Torvalds #include <linux/list.h> 145a0e3ad6STejun Heo #include <linux/slab.h> 1507f2282fSReshetova, Elena #include <linux/refcount.h> 163b6a94beSEric W. Biederman #include <net/neighbour.h> 173200392bSDavid Miller #include <net/sock.h> 18fddda2b7SChristoph Hellwig #include <linux/seq_file.h> 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds #define AX25_T1CLAMPLO 1 211da177e4SLinus Torvalds #define AX25_T1CLAMPHI (30 * HZ) 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #define AX25_BPQ_HEADER_LEN 16 241da177e4SLinus Torvalds #define AX25_KISS_HEADER_LEN 1 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds #define AX25_HEADER_LEN 17 271da177e4SLinus Torvalds #define AX25_ADDR_LEN 7 281da177e4SLinus Torvalds #define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN) 291da177e4SLinus Torvalds #define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN) 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds /* AX.25 Protocol IDs */ 321da177e4SLinus Torvalds #define AX25_P_ROSE 0x01 333bf0ae7bSRalf Baechle #define AX25_P_VJCOMP 0x06 /* Compressed TCP/IP packet */ 343bf0ae7bSRalf Baechle /* Van Jacobsen (RFC 1144) */ 353bf0ae7bSRalf Baechle #define AX25_P_VJUNCOMP 0x07 /* Uncompressed TCP/IP packet */ 363bf0ae7bSRalf Baechle /* Van Jacobsen (RFC 1144) */ 373bf0ae7bSRalf Baechle #define AX25_P_SEGMENT 0x08 /* Segmentation fragment */ 383bf0ae7bSRalf Baechle #define AX25_P_TEXNET 0xc3 /* TEXTNET datagram protocol */ 393bf0ae7bSRalf Baechle #define AX25_P_LQ 0xc4 /* Link Quality Protocol */ 403bf0ae7bSRalf Baechle #define AX25_P_ATALK 0xca /* Appletalk */ 413bf0ae7bSRalf Baechle #define AX25_P_ATALK_ARP 0xcb /* Appletalk ARP */ 423bf0ae7bSRalf Baechle #define AX25_P_IP 0xcc /* ARPA Internet Protocol */ 43f4ab2f72SJoe Perches #define AX25_P_ARP 0xcd /* ARPA Address Resolution */ 443bf0ae7bSRalf Baechle #define AX25_P_FLEXNET 0xce /* FlexNet */ 453bf0ae7bSRalf Baechle #define AX25_P_NETROM 0xcf /* NET/ROM */ 463bf0ae7bSRalf Baechle #define AX25_P_TEXT 0xF0 /* No layer 3 protocol impl. */ 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds /* AX.25 Segment control values */ 491da177e4SLinus Torvalds #define AX25_SEG_REM 0x7F 501da177e4SLinus Torvalds #define AX25_SEG_FIRST 0x80 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds #define AX25_CBIT 0x80 /* Command/Response bit */ 531da177e4SLinus Torvalds #define AX25_EBIT 0x01 /* HDLC Address Extension bit */ 541da177e4SLinus Torvalds #define AX25_HBIT 0x80 /* Has been repeated bit */ 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */ 571da177e4SLinus Torvalds #define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */ 581da177e4SLinus Torvalds #define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */ 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds #define AX25_COND_ACK_PENDING 0x01 611da177e4SLinus Torvalds #define AX25_COND_REJECT 0x02 621da177e4SLinus Torvalds #define AX25_COND_PEER_RX_BUSY 0x04 631da177e4SLinus Torvalds #define AX25_COND_OWN_RX_BUSY 0x08 641da177e4SLinus Torvalds #define AX25_COND_DAMA_MODE 0x10 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds #ifndef _LINUX_NETDEVICE_H 671da177e4SLinus Torvalds #include <linux/netdevice.h> 681da177e4SLinus Torvalds #endif 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds /* Upper sub-layer (LAPB) definitions */ 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds /* Control field templates */ 731da177e4SLinus Torvalds #define AX25_I 0x00 /* Information frames */ 741da177e4SLinus Torvalds #define AX25_S 0x01 /* Supervisory frames */ 751da177e4SLinus Torvalds #define AX25_RR 0x01 /* Receiver ready */ 761da177e4SLinus Torvalds #define AX25_RNR 0x05 /* Receiver not ready */ 771da177e4SLinus Torvalds #define AX25_REJ 0x09 /* Reject */ 781da177e4SLinus Torvalds #define AX25_U 0x03 /* Unnumbered frames */ 791da177e4SLinus Torvalds #define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */ 801da177e4SLinus Torvalds #define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ 811da177e4SLinus Torvalds #define AX25_DISC 0x43 /* Disconnect */ 821da177e4SLinus Torvalds #define AX25_DM 0x0f /* Disconnected mode */ 831da177e4SLinus Torvalds #define AX25_UA 0x63 /* Unnumbered acknowledge */ 841da177e4SLinus Torvalds #define AX25_FRMR 0x87 /* Frame reject */ 851da177e4SLinus Torvalds #define AX25_UI 0x03 /* Unnumbered information */ 861da177e4SLinus Torvalds #define AX25_XID 0xaf /* Exchange information */ 871da177e4SLinus Torvalds #define AX25_TEST 0xe3 /* Test */ 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds #define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */ 901da177e4SLinus Torvalds #define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */ 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds #define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */ 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds #define AX25_POLLOFF 0 951da177e4SLinus Torvalds #define AX25_POLLON 1 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds /* AX25 L2 C-bit */ 981da177e4SLinus Torvalds #define AX25_COMMAND 1 991da177e4SLinus Torvalds #define AX25_RESPONSE 2 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds /* Define Link State constants. */ 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds enum { 104b01ef8ffSRalf Baechle AX25_STATE_0, /* Listening */ 105b01ef8ffSRalf Baechle AX25_STATE_1, /* SABM sent */ 106b01ef8ffSRalf Baechle AX25_STATE_2, /* DISC sent */ 107b01ef8ffSRalf Baechle AX25_STATE_3, /* Established */ 108b01ef8ffSRalf Baechle AX25_STATE_4 /* Recovery */ 1091da177e4SLinus Torvalds }; 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds #define AX25_MODULUS 8 /* Standard AX.25 modulus */ 1121da177e4SLinus Torvalds #define AX25_EMODULUS 128 /* Extended AX.25 modulus */ 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds enum { 1151da177e4SLinus Torvalds AX25_PROTO_STD_SIMPLEX, 1161da177e4SLinus Torvalds AX25_PROTO_STD_DUPLEX, 117c7c694d1SRalf Baechle DL5RB #ifdef CONFIG_AX25_DAMA_SLAVE 1181da177e4SLinus Torvalds AX25_PROTO_DAMA_SLAVE, 119c7c694d1SRalf Baechle DL5RB #ifdef CONFIG_AX25_DAMA_MASTER 120c7c694d1SRalf Baechle DL5RB AX25_PROTO_DAMA_MASTER, 121c7c694d1SRalf Baechle DL5RB #define AX25_PROTO_MAX AX25_PROTO_DAMA_MASTER 122c7c694d1SRalf Baechle DL5RB #endif 123c7c694d1SRalf Baechle DL5RB #endif 124c7c694d1SRalf Baechle DL5RB __AX25_PROTO_MAX, 125c7c694d1SRalf Baechle DL5RB AX25_PROTO_MAX = __AX25_PROTO_MAX -1 1261da177e4SLinus Torvalds }; 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds enum { 1291da177e4SLinus Torvalds AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ 1301da177e4SLinus Torvalds AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ 1311da177e4SLinus Torvalds AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ 1321da177e4SLinus Torvalds AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ 1331da177e4SLinus Torvalds AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ 1341da177e4SLinus Torvalds AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ 1351da177e4SLinus Torvalds AX25_VALUES_T1, /* Default T1 timeout value */ 1361da177e4SLinus Torvalds AX25_VALUES_T2, /* Default T2 timeout value */ 1371da177e4SLinus Torvalds AX25_VALUES_T3, /* Default T3 timeout value */ 1381da177e4SLinus Torvalds AX25_VALUES_IDLE, /* Connected mode idle timer */ 1391da177e4SLinus Torvalds AX25_VALUES_N2, /* Default N2 value */ 1401da177e4SLinus Torvalds AX25_VALUES_PACLEN, /* AX.25 MTU */ 1411da177e4SLinus Torvalds AX25_VALUES_PROTOCOL, /* Std AX.25, DAMA Slave, DAMA Master */ 1421da177e4SLinus Torvalds AX25_VALUES_DS_TIMEOUT, /* DAMA Slave timeout */ 1431da177e4SLinus Torvalds AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ 1441da177e4SLinus Torvalds }; 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds #define AX25_DEF_IPDEFMODE 0 /* Datagram */ 1471da177e4SLinus Torvalds #define AX25_DEF_AXDEFMODE 0 /* Normal */ 1481da177e4SLinus Torvalds #define AX25_DEF_BACKOFF 1 /* Linear backoff */ 1491da177e4SLinus Torvalds #define AX25_DEF_CONMODE 2 /* Connected mode allowed */ 1501da177e4SLinus Torvalds #define AX25_DEF_WINDOW 2 /* Window=2 */ 1511da177e4SLinus Torvalds #define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ 152e1fdb5b3SRalf Baechle #define AX25_DEF_T1 10000 /* T1=10s */ 153e1fdb5b3SRalf Baechle #define AX25_DEF_T2 3000 /* T2=3s */ 154e1fdb5b3SRalf Baechle #define AX25_DEF_T3 300000 /* T3=300s */ 1551da177e4SLinus Torvalds #define AX25_DEF_N2 10 /* N2=10 */ 156e1fdb5b3SRalf Baechle #define AX25_DEF_IDLE 0 /* Idle=None */ 1571da177e4SLinus Torvalds #define AX25_DEF_PACLEN 256 /* Paclen=256 */ 1581da177e4SLinus Torvalds #define AX25_DEF_PROTOCOL AX25_PROTO_STD_SIMPLEX /* Standard AX.25 */ 159e1fdb5b3SRalf Baechle #define AX25_DEF_DS_TIMEOUT 180000 /* DAMA timeout 3 minutes */ 1601da177e4SLinus Torvalds 1611da177e4SLinus Torvalds typedef struct ax25_uid_assoc { 16201d7dd0eSRalf Baechle struct hlist_node uid_node; 16307f2282fSReshetova, Elena refcount_t refcount; 164d13fda85SEric W. Biederman kuid_t uid; 1651da177e4SLinus Torvalds ax25_address call; 1661da177e4SLinus Torvalds } ax25_uid_assoc; 1671da177e4SLinus Torvalds 168b67bfe0dSSasha Levin #define ax25_uid_for_each(__ax25, list) \ 169b67bfe0dSSasha Levin hlist_for_each_entry(__ax25, list, uid_node) 17001d7dd0eSRalf Baechle 17101d7dd0eSRalf Baechle #define ax25_uid_hold(ax25) \ 17207f2282fSReshetova, Elena refcount_inc(&((ax25)->refcount)) 17301d7dd0eSRalf Baechle 17401d7dd0eSRalf Baechle static inline void ax25_uid_put(ax25_uid_assoc *assoc) 17501d7dd0eSRalf Baechle { 17607f2282fSReshetova, Elena if (refcount_dec_and_test(&assoc->refcount)) { 17701d7dd0eSRalf Baechle kfree(assoc); 17801d7dd0eSRalf Baechle } 17901d7dd0eSRalf Baechle } 18001d7dd0eSRalf Baechle 1811da177e4SLinus Torvalds typedef struct { 1821da177e4SLinus Torvalds ax25_address calls[AX25_MAX_DIGIS]; 1831da177e4SLinus Torvalds unsigned char repeated[AX25_MAX_DIGIS]; 1841da177e4SLinus Torvalds unsigned char ndigi; 1854595f251SRalf Baechle signed char lastrepeat; 1861da177e4SLinus Torvalds } ax25_digi; 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds typedef struct ax25_route { 1891da177e4SLinus Torvalds struct ax25_route *next; 19039f25d42SReshetova, Elena refcount_t refcount; 1911da177e4SLinus Torvalds ax25_address callsign; 1921da177e4SLinus Torvalds struct net_device *dev; 1931da177e4SLinus Torvalds ax25_digi *digipeat; 1941da177e4SLinus Torvalds char ip_mode; 1951da177e4SLinus Torvalds } ax25_route; 1961da177e4SLinus Torvalds 197006f68b8SRalf Baechle DL5RB static inline void ax25_hold_route(ax25_route *ax25_rt) 198006f68b8SRalf Baechle DL5RB { 19939f25d42SReshetova, Elena refcount_inc(&ax25_rt->refcount); 200006f68b8SRalf Baechle DL5RB } 201006f68b8SRalf Baechle DL5RB 202c1d8f804SJoe Perches void __ax25_put_route(ax25_route *ax25_rt); 203006f68b8SRalf Baechle DL5RB 20463530abaSEric Dumazet extern rwlock_t ax25_route_lock; 20563530abaSEric Dumazet 20663530abaSEric Dumazet static inline void ax25_route_lock_use(void) 20763530abaSEric Dumazet { 20863530abaSEric Dumazet read_lock(&ax25_route_lock); 20963530abaSEric Dumazet } 21063530abaSEric Dumazet 21163530abaSEric Dumazet static inline void ax25_route_lock_unuse(void) 21263530abaSEric Dumazet { 21363530abaSEric Dumazet read_unlock(&ax25_route_lock); 21463530abaSEric Dumazet } 21563530abaSEric Dumazet 216006f68b8SRalf Baechle DL5RB static inline void ax25_put_route(ax25_route *ax25_rt) 217006f68b8SRalf Baechle DL5RB { 21839f25d42SReshetova, Elena if (refcount_dec_and_test(&ax25_rt->refcount)) 219006f68b8SRalf Baechle DL5RB __ax25_put_route(ax25_rt); 220006f68b8SRalf Baechle DL5RB } 221006f68b8SRalf Baechle DL5RB 2221da177e4SLinus Torvalds typedef struct { 2231da177e4SLinus Torvalds char slave; /* slave_mode? */ 2241da177e4SLinus Torvalds struct timer_list slave_timer; /* timeout timer */ 2251da177e4SLinus Torvalds unsigned short slave_timeout; /* when? */ 2261da177e4SLinus Torvalds } ax25_dama_info; 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds struct ctl_table; 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds typedef struct ax25_dev { 2311da177e4SLinus Torvalds struct ax25_dev *next; 23266ce07f7SEric Dumazet 2331da177e4SLinus Torvalds struct net_device *dev; 23466ce07f7SEric Dumazet netdevice_tracker dev_tracker; 23566ce07f7SEric Dumazet 2361da177e4SLinus Torvalds struct net_device *forward; 2370ca7a4c8SEric W. Biederman struct ctl_table_header *sysheader; 2381da177e4SLinus Torvalds int values[AX25_MAX_VALUES]; 2391da177e4SLinus Torvalds #if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER) 2401da177e4SLinus Torvalds ax25_dama_info dama; 2411da177e4SLinus Torvalds #endif 242*d01ffb9eSDuoming Zhou refcount_t refcount; 2431da177e4SLinus Torvalds } ax25_dev; 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds typedef struct ax25_cb { 2461da177e4SLinus Torvalds struct hlist_node ax25_node; 2471da177e4SLinus Torvalds ax25_address source_addr, dest_addr; 2481da177e4SLinus Torvalds ax25_digi *digipeat; 2491da177e4SLinus Torvalds ax25_dev *ax25_dev; 2501da177e4SLinus Torvalds unsigned char iamdigi; 2511da177e4SLinus Torvalds unsigned char state, modulus, pidincl; 2521da177e4SLinus Torvalds unsigned short vs, vr, va; 2531da177e4SLinus Torvalds unsigned char condition, backoff; 2541da177e4SLinus Torvalds unsigned char n2, n2count; 2551da177e4SLinus Torvalds struct timer_list t1timer, t2timer, t3timer, idletimer; 2561da177e4SLinus Torvalds unsigned long t1, t2, t3, idle, rtt; 2571da177e4SLinus Torvalds unsigned short paclen, fragno, fraglen; 2581da177e4SLinus Torvalds struct sk_buff_head write_queue; 2591da177e4SLinus Torvalds struct sk_buff_head reseq_queue; 2601da177e4SLinus Torvalds struct sk_buff_head ack_queue; 2611da177e4SLinus Torvalds struct sk_buff_head frag_queue; 2621da177e4SLinus Torvalds unsigned char window; 2631da177e4SLinus Torvalds struct timer_list timer, dtimer; 2641da177e4SLinus Torvalds struct sock *sk; /* Backlink to socket */ 265b6d52edeSReshetova, Elena refcount_t refcount; 2661da177e4SLinus Torvalds } ax25_cb; 2671da177e4SLinus Torvalds 2683200392bSDavid Miller struct ax25_sock { 2693200392bSDavid Miller struct sock sk; 2703200392bSDavid Miller struct ax25_cb *cb; 2713200392bSDavid Miller }; 2723200392bSDavid Miller 2733200392bSDavid Miller static inline struct ax25_sock *ax25_sk(const struct sock *sk) 2743200392bSDavid Miller { 2753200392bSDavid Miller return (struct ax25_sock *) sk; 2763200392bSDavid Miller } 2773200392bSDavid Miller 2783200392bSDavid Miller static inline struct ax25_cb *sk_to_ax25(const struct sock *sk) 2793200392bSDavid Miller { 2803200392bSDavid Miller return ax25_sk(sk)->cb; 2813200392bSDavid Miller } 2821da177e4SLinus Torvalds 283b67bfe0dSSasha Levin #define ax25_for_each(__ax25, list) \ 284b67bfe0dSSasha Levin hlist_for_each_entry(__ax25, list, ax25_node) 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds #define ax25_cb_hold(__ax25) \ 287b6d52edeSReshetova, Elena refcount_inc(&((__ax25)->refcount)) 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds static __inline__ void ax25_cb_put(ax25_cb *ax25) 2901da177e4SLinus Torvalds { 291b6d52edeSReshetova, Elena if (refcount_dec_and_test(&ax25->refcount)) { 2921da177e4SLinus Torvalds kfree(ax25->digipeat); 2931da177e4SLinus Torvalds kfree(ax25); 2941da177e4SLinus Torvalds } 2951da177e4SLinus Torvalds } 2961da177e4SLinus Torvalds 297*d01ffb9eSDuoming Zhou #define ax25_dev_hold(__ax25_dev) \ 298*d01ffb9eSDuoming Zhou refcount_inc(&((__ax25_dev)->refcount)) 299*d01ffb9eSDuoming Zhou 300*d01ffb9eSDuoming Zhou static __inline__ void ax25_dev_put(ax25_dev *ax25_dev) 301*d01ffb9eSDuoming Zhou { 302*d01ffb9eSDuoming Zhou if (refcount_dec_and_test(&ax25_dev->refcount)) { 303*d01ffb9eSDuoming Zhou kfree(ax25_dev); 304*d01ffb9eSDuoming Zhou } 305*d01ffb9eSDuoming Zhou } 306f852640eSAlexey Dobriyan static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev) 30756cb5156SArnaldo Carvalho de Melo { 30856cb5156SArnaldo Carvalho de Melo skb->dev = dev; 309459a98edSArnaldo Carvalho de Melo skb_reset_mac_header(skb); 31056cb5156SArnaldo Carvalho de Melo skb->pkt_type = PACKET_HOST; 31156cb5156SArnaldo Carvalho de Melo return htons(ETH_P_AX25); 31256cb5156SArnaldo Carvalho de Melo } 31356cb5156SArnaldo Carvalho de Melo 3141da177e4SLinus Torvalds /* af_ax25.c */ 3151da177e4SLinus Torvalds extern struct hlist_head ax25_list; 3161da177e4SLinus Torvalds extern spinlock_t ax25_list_lock; 317c1d8f804SJoe Perches void ax25_cb_add(ax25_cb *); 3181da177e4SLinus Torvalds struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); 3191da177e4SLinus Torvalds struct sock *ax25_get_socket(ax25_address *, ax25_address *, int); 320c045ad2cSJakub Kicinski ax25_cb *ax25_find_cb(const ax25_address *, ax25_address *, ax25_digi *, 321c1d8f804SJoe Perches struct net_device *); 322c1d8f804SJoe Perches void ax25_send_to_raw(ax25_address *, struct sk_buff *, int); 323c1d8f804SJoe Perches void ax25_destroy_socket(ax25_cb *); 324c1d8f804SJoe Perches ax25_cb * __must_check ax25_create_cb(void); 325c1d8f804SJoe Perches void ax25_fillin_cb(ax25_cb *, ax25_dev *); 326c1d8f804SJoe Perches struct sock *ax25_make_new(struct sock *, struct ax25_dev *); 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds /* ax25_addr.c */ 32915b1c0e8SRalf Baechle extern const ax25_address ax25_bcast; 33015b1c0e8SRalf Baechle extern const ax25_address ax25_defaddr; 33115b1c0e8SRalf Baechle extern const ax25_address null_ax25_address; 332c1d8f804SJoe Perches char *ax2asc(char *buf, const ax25_address *); 333c1d8f804SJoe Perches void asc2ax(ax25_address *addr, const char *callsign); 334c1d8f804SJoe Perches int ax25cmp(const ax25_address *, const ax25_address *); 335c1d8f804SJoe Perches int ax25digicmp(const ax25_digi *, const ax25_digi *); 336c1d8f804SJoe Perches const unsigned char *ax25_addr_parse(const unsigned char *, int, 337e8cc49bbSRalf Baechle ax25_address *, ax25_address *, ax25_digi *, int *, int *); 338c1d8f804SJoe Perches int ax25_addr_build(unsigned char *, const ax25_address *, 339e8cc49bbSRalf Baechle const ax25_address *, const ax25_digi *, int, int); 340c1d8f804SJoe Perches int ax25_addr_size(const ax25_digi *); 341c1d8f804SJoe Perches void ax25_digi_invert(const ax25_digi *, ax25_digi *); 3421da177e4SLinus Torvalds 3431da177e4SLinus Torvalds /* ax25_dev.c */ 3441da177e4SLinus Torvalds extern ax25_dev *ax25_dev_list; 3451da177e4SLinus Torvalds extern spinlock_t ax25_dev_lock; 3461da177e4SLinus Torvalds 34719ff13f2SDavid Ahern #if IS_ENABLED(CONFIG_AX25) 3481da177e4SLinus Torvalds static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev) 3491da177e4SLinus Torvalds { 3501da177e4SLinus Torvalds return dev->ax25_ptr; 3511da177e4SLinus Torvalds } 35219ff13f2SDavid Ahern #endif 3531da177e4SLinus Torvalds 354c1d8f804SJoe Perches ax25_dev *ax25_addr_ax25dev(ax25_address *); 355c1d8f804SJoe Perches void ax25_dev_device_up(struct net_device *); 356c1d8f804SJoe Perches void ax25_dev_device_down(struct net_device *); 357c1d8f804SJoe Perches int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); 358c1d8f804SJoe Perches struct net_device *ax25_fwd_dev(struct net_device *); 359c1d8f804SJoe Perches void ax25_dev_free(void); 3601da177e4SLinus Torvalds 3611da177e4SLinus Torvalds /* ax25_ds_in.c */ 362c1d8f804SJoe Perches int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int); 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds /* ax25_ds_subr.c */ 365c1d8f804SJoe Perches void ax25_ds_nr_error_recovery(ax25_cb *); 366c1d8f804SJoe Perches void ax25_ds_enquiry_response(ax25_cb *); 367c1d8f804SJoe Perches void ax25_ds_establish_data_link(ax25_cb *); 368c1d8f804SJoe Perches void ax25_dev_dama_off(ax25_dev *); 369c1d8f804SJoe Perches void ax25_dama_on(ax25_cb *); 370c1d8f804SJoe Perches void ax25_dama_off(ax25_cb *); 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds /* ax25_ds_timer.c */ 373c1d8f804SJoe Perches void ax25_ds_setup_timer(ax25_dev *); 374c1d8f804SJoe Perches void ax25_ds_set_timer(ax25_dev *); 375c1d8f804SJoe Perches void ax25_ds_del_timer(ax25_dev *); 376c1d8f804SJoe Perches void ax25_ds_timer(ax25_cb *); 377c1d8f804SJoe Perches void ax25_ds_t1_timeout(ax25_cb *); 378c1d8f804SJoe Perches void ax25_ds_heartbeat_expiry(ax25_cb *); 379c1d8f804SJoe Perches void ax25_ds_t3timer_expiry(ax25_cb *); 380c1d8f804SJoe Perches void ax25_ds_idletimer_expiry(ax25_cb *); 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds /* ax25_iface.c */ 3838d5cf596SRalf Baechle 3848d5cf596SRalf Baechle struct ax25_protocol { 3858d5cf596SRalf Baechle struct ax25_protocol *next; 3868d5cf596SRalf Baechle unsigned int pid; 3878d5cf596SRalf Baechle int (*func)(struct sk_buff *, ax25_cb *); 3888d5cf596SRalf Baechle }; 3898d5cf596SRalf Baechle 390c1d8f804SJoe Perches void ax25_register_pid(struct ax25_protocol *ap); 391c1d8f804SJoe Perches void ax25_protocol_release(unsigned int); 392a4282717SRalf Baechle 393a4282717SRalf Baechle struct ax25_linkfail { 394a4282717SRalf Baechle struct hlist_node lf_node; 395a4282717SRalf Baechle void (*func)(ax25_cb *, int); 396a4282717SRalf Baechle }; 397a4282717SRalf Baechle 398c1d8f804SJoe Perches void ax25_linkfail_register(struct ax25_linkfail *lf); 399c1d8f804SJoe Perches void ax25_linkfail_release(struct ax25_linkfail *lf); 400c045ad2cSJakub Kicinski int __must_check ax25_listen_register(const ax25_address *, 401c045ad2cSJakub Kicinski struct net_device *); 402c045ad2cSJakub Kicinski void ax25_listen_release(const ax25_address *, struct net_device *); 403c1d8f804SJoe Perches int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); 404c045ad2cSJakub Kicinski int ax25_listen_mine(const ax25_address *, struct net_device *); 405c1d8f804SJoe Perches void ax25_link_failed(ax25_cb *, int); 406c1d8f804SJoe Perches int ax25_protocol_is_registered(unsigned int); 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds /* ax25_in.c */ 409c1d8f804SJoe Perches int ax25_rx_iframe(ax25_cb *, struct sk_buff *); 410c1d8f804SJoe Perches int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, 411c1d8f804SJoe Perches struct net_device *); 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds /* ax25_ip.c */ 4141d5da757SEric W. Biederman netdev_tx_t ax25_ip_xmit(struct sk_buff *skb); 4153b04dddeSStephen Hemminger extern const struct header_ops ax25_header_ops; 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds /* ax25_out.c */ 418c045ad2cSJakub Kicinski ax25_cb *ax25_send_frame(struct sk_buff *, int, const ax25_address *, 419c045ad2cSJakub Kicinski ax25_address *, ax25_digi *, struct net_device *); 420c1d8f804SJoe Perches void ax25_output(ax25_cb *, int, struct sk_buff *); 421c1d8f804SJoe Perches void ax25_kick(ax25_cb *); 422c1d8f804SJoe Perches void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); 423c1d8f804SJoe Perches void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev); 424c1d8f804SJoe Perches int ax25_check_iframes_acked(ax25_cb *, unsigned short); 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds /* ax25_route.c */ 427c1d8f804SJoe Perches void ax25_rt_device_down(struct net_device *); 428c1d8f804SJoe Perches int ax25_rt_ioctl(unsigned int, void __user *); 429fddda2b7SChristoph Hellwig extern const struct seq_operations ax25_rt_seqops; 430c1d8f804SJoe Perches ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev); 431c1d8f804SJoe Perches int ax25_rt_autobind(ax25_cb *, ax25_address *); 432c1d8f804SJoe Perches struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, 433c1d8f804SJoe Perches ax25_address *, ax25_digi *); 434c1d8f804SJoe Perches void ax25_rt_free(void); 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds /* ax25_std_in.c */ 437c1d8f804SJoe Perches int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int); 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds /* ax25_std_subr.c */ 440c1d8f804SJoe Perches void ax25_std_nr_error_recovery(ax25_cb *); 441c1d8f804SJoe Perches void ax25_std_establish_data_link(ax25_cb *); 442c1d8f804SJoe Perches void ax25_std_transmit_enquiry(ax25_cb *); 443c1d8f804SJoe Perches void ax25_std_enquiry_response(ax25_cb *); 444c1d8f804SJoe Perches void ax25_std_timeout_response(ax25_cb *); 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds /* ax25_std_timer.c */ 447c1d8f804SJoe Perches void ax25_std_heartbeat_expiry(ax25_cb *); 448c1d8f804SJoe Perches void ax25_std_t1timer_expiry(ax25_cb *); 449c1d8f804SJoe Perches void ax25_std_t2timer_expiry(ax25_cb *); 450c1d8f804SJoe Perches void ax25_std_t3timer_expiry(ax25_cb *); 451c1d8f804SJoe Perches void ax25_std_idletimer_expiry(ax25_cb *); 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds /* ax25_subr.c */ 454c1d8f804SJoe Perches void ax25_clear_queues(ax25_cb *); 455c1d8f804SJoe Perches void ax25_frames_acked(ax25_cb *, unsigned short); 456c1d8f804SJoe Perches void ax25_requeue_frames(ax25_cb *); 457c1d8f804SJoe Perches int ax25_validate_nr(ax25_cb *, unsigned short); 458c1d8f804SJoe Perches int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); 459c1d8f804SJoe Perches void ax25_send_control(ax25_cb *, int, int, int); 460c1d8f804SJoe Perches void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, 461c1d8f804SJoe Perches ax25_digi *); 462c1d8f804SJoe Perches void ax25_calculate_t1(ax25_cb *); 463c1d8f804SJoe Perches void ax25_calculate_rtt(ax25_cb *); 464c1d8f804SJoe Perches void ax25_disconnect(ax25_cb *, int); 4651da177e4SLinus Torvalds 4661da177e4SLinus Torvalds /* ax25_timer.c */ 467c1d8f804SJoe Perches void ax25_setup_timers(ax25_cb *); 468c1d8f804SJoe Perches void ax25_start_heartbeat(ax25_cb *); 469c1d8f804SJoe Perches void ax25_start_t1timer(ax25_cb *); 470c1d8f804SJoe Perches void ax25_start_t2timer(ax25_cb *); 471c1d8f804SJoe Perches void ax25_start_t3timer(ax25_cb *); 472c1d8f804SJoe Perches void ax25_start_idletimer(ax25_cb *); 473c1d8f804SJoe Perches void ax25_stop_heartbeat(ax25_cb *); 474c1d8f804SJoe Perches void ax25_stop_t1timer(ax25_cb *); 475c1d8f804SJoe Perches void ax25_stop_t2timer(ax25_cb *); 476c1d8f804SJoe Perches void ax25_stop_t3timer(ax25_cb *); 477c1d8f804SJoe Perches void ax25_stop_idletimer(ax25_cb *); 478c1d8f804SJoe Perches int ax25_t1timer_running(ax25_cb *); 479c1d8f804SJoe Perches unsigned long ax25_display_timer(struct timer_list *); 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds /* ax25_uid.c */ 4821da177e4SLinus Torvalds extern int ax25_uid_policy; 483c1d8f804SJoe Perches ax25_uid_assoc *ax25_findbyuid(kuid_t); 484c1d8f804SJoe Perches int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *); 485fddda2b7SChristoph Hellwig extern const struct seq_operations ax25_uid_seqops; 486c1d8f804SJoe Perches void ax25_uid_free(void); 4871da177e4SLinus Torvalds 4881da177e4SLinus Torvalds /* sysctl_net_ax25.c */ 4891da177e4SLinus Torvalds #ifdef CONFIG_SYSCTL 490c1d8f804SJoe Perches int ax25_register_dev_sysctl(ax25_dev *ax25_dev); 491c1d8f804SJoe Perches void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev); 4921da177e4SLinus Torvalds #else 493b9898507SEric W. Biederman static inline int ax25_register_dev_sysctl(ax25_dev *ax25_dev) { return 0; } 494b9898507SEric W. Biederman static inline void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev) {} 4951da177e4SLinus Torvalds #endif /* CONFIG_SYSCTL */ 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds #endif 498