/*
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/*
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* AX.25 release 038
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* AX.25 release 038
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*
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*
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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*
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*
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* This module:
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* This module:
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* This module is free software; you can redistribute it and/or
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* This module 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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* 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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* 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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* 2 of the License, or (at your option) any later version.
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*
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*
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* History
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* History
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* AX.25 006 Alan(GW4PTS) Nearly died of shock - it's working 8-)
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* AX.25 006 Alan(GW4PTS) Nearly died of shock - it's working 8-)
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* AX.25 007 Alan(GW4PTS) Removed the silliest bugs
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* AX.25 007 Alan(GW4PTS) Removed the silliest bugs
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* AX.25 008 Alan(GW4PTS) Cleaned up, fixed a few state machine problems, added callbacks
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* AX.25 008 Alan(GW4PTS) Cleaned up, fixed a few state machine problems, added callbacks
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* AX.25 009 Alan(GW4PTS) Emergency patch kit to fix memory corruption
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* AX.25 009 Alan(GW4PTS) Emergency patch kit to fix memory corruption
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* AX.25 010 Alan(GW4PTS) Added RAW sockets/Digipeat.
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* AX.25 010 Alan(GW4PTS) Added RAW sockets/Digipeat.
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* AX.25 011 Alan(GW4PTS) RAW socket and datagram fixes (thanks) - Raw sendto now gets PID right
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* AX.25 011 Alan(GW4PTS) RAW socket and datagram fixes (thanks) - Raw sendto now gets PID right
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* datagram sendto uses correct target address.
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* datagram sendto uses correct target address.
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* AX.25 012 Alan(GW4PTS) Correct incoming connection handling, send DM to failed connects.
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* AX.25 012 Alan(GW4PTS) Correct incoming connection handling, send DM to failed connects.
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* Use skb->data not skb+1. Support sk->priority correctly.
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* Use skb->data not skb+1. Support sk->priority correctly.
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* Correct receive on SOCK_DGRAM.
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* Correct receive on SOCK_DGRAM.
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* AX.25 013 Alan(GW4PTS) Send DM to all unknown frames, missing initialiser fixed
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* AX.25 013 Alan(GW4PTS) Send DM to all unknown frames, missing initialiser fixed
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* Leave spare SSID bits set (DAMA etc) - thanks for bug report,
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* Leave spare SSID bits set (DAMA etc) - thanks for bug report,
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* removed device registration (it's not used or needed). Clean up for
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* removed device registration (it's not used or needed). Clean up for
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* gcc 2.5.8. PID to AX25_P_
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* gcc 2.5.8. PID to AX25_P_
|
* AX.25 014 Alan(GW4PTS) Cleanup and NET3 merge
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* AX.25 014 Alan(GW4PTS) Cleanup and NET3 merge
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* AX.25 015 Alan(GW4PTS) Internal test version.
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* AX.25 015 Alan(GW4PTS) Internal test version.
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* AX.25 016 Alan(GW4PTS) Semi Internal version for PI card
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* AX.25 016 Alan(GW4PTS) Semi Internal version for PI card
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* work.
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* work.
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* AX.25 017 Alan(GW4PTS) Fixed some small bugs reported by
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* AX.25 017 Alan(GW4PTS) Fixed some small bugs reported by
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* G4KLX
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* G4KLX
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* AX.25 018 Alan(GW4PTS) Fixed a small error in SOCK_DGRAM
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* AX.25 018 Alan(GW4PTS) Fixed a small error in SOCK_DGRAM
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* AX.25 019 Alan(GW4PTS) Clean ups for the non INET kernel and device ioctls in AX.25
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* AX.25 019 Alan(GW4PTS) Clean ups for the non INET kernel and device ioctls in AX.25
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* AX.25 020 Jonathan(G4KLX) /proc support and other changes.
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* AX.25 020 Jonathan(G4KLX) /proc support and other changes.
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* AX.25 021 Alan(GW4PTS) Added AX25_T1, AX25_N2, AX25_T3 as requested.
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* AX.25 021 Alan(GW4PTS) Added AX25_T1, AX25_N2, AX25_T3 as requested.
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* AX.25 022 Jonathan(G4KLX) More work on the ax25 auto router and /proc improved (again)!
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* AX.25 022 Jonathan(G4KLX) More work on the ax25 auto router and /proc improved (again)!
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* Alan(GW4PTS) Added TIOCINQ/OUTQ
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* Alan(GW4PTS) Added TIOCINQ/OUTQ
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* AX.25 023 Alan(GW4PTS) Fixed shutdown bug
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* AX.25 023 Alan(GW4PTS) Fixed shutdown bug
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* AX.25 023 Alan(GW4PTS) Linus changed timers
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* AX.25 023 Alan(GW4PTS) Linus changed timers
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* AX.25 024 Alan(GW4PTS) Small bug fixes
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* AX.25 024 Alan(GW4PTS) Small bug fixes
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* AX.25 025 Alan(GW4PTS) More fixes, Linux 1.1.51 compatibility stuff, timers again!
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* AX.25 025 Alan(GW4PTS) More fixes, Linux 1.1.51 compatibility stuff, timers again!
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* AX.25 026 Alan(GW4PTS) Small state fix.
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* AX.25 026 Alan(GW4PTS) Small state fix.
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* AX.25 027 Alan(GW4PTS) Socket close crash fixes.
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* AX.25 027 Alan(GW4PTS) Socket close crash fixes.
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* AX.25 028 Alan(GW4PTS) Callsign control including settings per uid.
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* AX.25 028 Alan(GW4PTS) Callsign control including settings per uid.
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* Small bug fixes.
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* Small bug fixes.
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* Protocol set by sockets only.
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* Protocol set by sockets only.
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* Small changes to allow for start of NET/ROM layer.
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* Small changes to allow for start of NET/ROM layer.
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* AX.25 028a Jonathan(G4KLX) Changes to state machine.
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* AX.25 028a Jonathan(G4KLX) Changes to state machine.
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* AX.25 028b Jonathan(G4KLX) Extracted ax25 control block
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* AX.25 028b Jonathan(G4KLX) Extracted ax25 control block
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* from sock structure.
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* from sock structure.
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* AX.25 029 Alan(GW4PTS) Combined 028b and some KA9Q code
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* AX.25 029 Alan(GW4PTS) Combined 028b and some KA9Q code
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* Jonathan(G4KLX) and removed all the old Berkeley, added IP mode registration.
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* Jonathan(G4KLX) and removed all the old Berkeley, added IP mode registration.
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* Darryl(G7LED) stuff. Cross-port digipeating. Minor fixes and enhancements.
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* Darryl(G7LED) stuff. Cross-port digipeating. Minor fixes and enhancements.
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* Alan(GW4PTS) Missed suser() on axassociate checks
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* Alan(GW4PTS) Missed suser() on axassociate checks
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* AX.25 030 Alan(GW4PTS) Added variable length headers.
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* AX.25 030 Alan(GW4PTS) Added variable length headers.
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* Jonathan(G4KLX) Added BPQ Ethernet interface.
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* Jonathan(G4KLX) Added BPQ Ethernet interface.
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* Steven(GW7RRM) Added digi-peating control ioctl.
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* Steven(GW7RRM) Added digi-peating control ioctl.
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* Added extended AX.25 support.
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* Added extended AX.25 support.
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* Added AX.25 frame segmentation.
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* Added AX.25 frame segmentation.
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* Darryl(G7LED) Changed connect(), recvfrom(), sendto() sockaddr/addrlen to
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* Darryl(G7LED) Changed connect(), recvfrom(), sendto() sockaddr/addrlen to
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* fall inline with bind() and new policy.
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* fall inline with bind() and new policy.
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* Moved digipeating ctl to new ax25_dev structs.
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* Moved digipeating ctl to new ax25_dev structs.
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* Fixed ax25_release(), set TCP_CLOSE, wakeup app
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* Fixed ax25_release(), set TCP_CLOSE, wakeup app
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* context, THEN make the sock dead.
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* context, THEN make the sock dead.
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* Alan(GW4PTS) Cleaned up for single recvmsg methods.
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* Alan(GW4PTS) Cleaned up for single recvmsg methods.
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* Alan(GW4PTS) Fixed not clearing error on connect failure.
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* Alan(GW4PTS) Fixed not clearing error on connect failure.
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* AX.25 031 Jonathan(G4KLX) Added binding to any device.
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* AX.25 031 Jonathan(G4KLX) Added binding to any device.
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* Joerg(DL1BKE) Added DAMA support, fixed (?) digipeating, fixed buffer locking
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* Joerg(DL1BKE) Added DAMA support, fixed (?) digipeating, fixed buffer locking
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* for "virtual connect" mode... Result: Probably the
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* for "virtual connect" mode... Result: Probably the
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* "Most Buggiest Code You've Ever Seen" (TM)
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* "Most Buggiest Code You've Ever Seen" (TM)
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* HaJo(DD8NE) Implementation of a T5 (idle) timer
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* HaJo(DD8NE) Implementation of a T5 (idle) timer
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* Joerg(DL1BKE) Renamed T5 to IDLE and changed behaviour:
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* Joerg(DL1BKE) Renamed T5 to IDLE and changed behaviour:
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* the timer gets reloaded on every received or transmitted
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* the timer gets reloaded on every received or transmitted
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* I frame for IP or NETROM. The idle timer is not active
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* I frame for IP or NETROM. The idle timer is not active
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* on "vanilla AX.25" connections. Furthermore added PACLEN
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* on "vanilla AX.25" connections. Furthermore added PACLEN
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* to provide AX.25-layer based fragmentation (like WAMPES)
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* to provide AX.25-layer based fragmentation (like WAMPES)
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* AX.25 032 Joerg(DL1BKE) Fixed DAMA timeout error.
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* AX.25 032 Joerg(DL1BKE) Fixed DAMA timeout error.
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* ax25_send_frame() limits the number of enqueued
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* ax25_send_frame() limits the number of enqueued
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* datagrams per socket.
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* datagrams per socket.
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* AX.25 033 Jonathan(G4KLX) Removed auto-router.
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* AX.25 033 Jonathan(G4KLX) Removed auto-router.
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* Hans(PE1AYX) Converted to Module.
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* Hans(PE1AYX) Converted to Module.
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* Joerg(DL1BKE) Moved BPQ Ethernet to separate driver.
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* Joerg(DL1BKE) Moved BPQ Ethernet to separate driver.
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* AX.25 034 Jonathan(G4KLX) 2.1 changes
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* AX.25 034 Jonathan(G4KLX) 2.1 changes
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* Alan(GW4PTS) Small POSIXisations
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* Alan(GW4PTS) Small POSIXisations
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* AX.25 035 Alan(GW4PTS) Started fixing to the new
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* AX.25 035 Alan(GW4PTS) Started fixing to the new
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* format.
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* format.
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* Hans(PE1AYX) Fixed interface to IP layer.
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* Hans(PE1AYX) Fixed interface to IP layer.
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* Alan(GW4PTS) Added asynchronous support.
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* Alan(GW4PTS) Added asynchronous support.
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* Frederic(F1OAT) Support for pseudo-digipeating.
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* Frederic(F1OAT) Support for pseudo-digipeating.
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* Jonathan(G4KLX) Support for packet forwarding.
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* Jonathan(G4KLX) Support for packet forwarding.
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* AX.25 036 Jonathan(G4KLX) Major restructuring.
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* AX.25 036 Jonathan(G4KLX) Major restructuring.
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* Joerg(DL1BKE) Fixed DAMA Slave.
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* Joerg(DL1BKE) Fixed DAMA Slave.
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* Jonathan(G4KLX) Fix wildcard listen parameter setting.
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* Jonathan(G4KLX) Fix wildcard listen parameter setting.
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* AX.25 037 Jonathan(G4KLX) New timer architecture.
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* AX.25 037 Jonathan(G4KLX) New timer architecture.
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* AX.25 038 Matthias(DG2FEF) Small fixes to the syscall interface to make kernel
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* AX.25 038 Matthias(DG2FEF) Small fixes to the syscall interface to make kernel
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* independent of AX25_MAX_DIGIS used by applications.
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* independent of AX25_MAX_DIGIS used by applications.
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* Tomi(OH2BNS) Fixed ax25_getname().
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* Tomi(OH2BNS) Fixed ax25_getname().
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* Joerg(DL1BKE) Starting to phase out the support for full_sockaddr_ax25
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* Joerg(DL1BKE) Starting to phase out the support for full_sockaddr_ax25
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* with only 6 digipeaters and sockaddr_ax25 in ax25_bind(),
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* with only 6 digipeaters and sockaddr_ax25 in ax25_bind(),
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* ax25_connect() and ax25_sendmsg()
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* ax25_connect() and ax25_sendmsg()
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* Joerg(DL1BKE) Added support for SO_BINDTODEVICE
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* Joerg(DL1BKE) Added support for SO_BINDTODEVICE
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* Arnaldo C. Melo s/suser/capable(CAP_NET_ADMIN)/, some more cleanups
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* Arnaldo C. Melo s/suser/capable(CAP_NET_ADMIN)/, some more cleanups
|
* Michal Ostrowski Module initialization cleanup.
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* Michal Ostrowski Module initialization cleanup.
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* Jeroen(PE1RXQ) Use sock_orphan() on release.
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* Jeroen(PE1RXQ) Use sock_orphan() on release.
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*/
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*/
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/sockios.h>
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#include <linux/net.h>
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#include <linux/net.h>
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#include <net/ax25.h>
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#include <net/ax25.h>
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#include <linux/inet.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/netdevice.h>
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#include <linux/if_arp.h>
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#include <linux/if_arp.h>
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#include <linux/skbuff.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <net/sock.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <asm/system.h>
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#include <linux/fcntl.h>
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#include <linux/fcntl.h>
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#include <linux/termios.h> /* For TIOCINQ/OUTQ */
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#include <linux/termios.h> /* For TIOCINQ/OUTQ */
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/interrupt.h>
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#include <linux/notifier.h>
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#include <linux/notifier.h>
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#include <linux/proc_fs.h>
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#include <linux/proc_fs.h>
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#include <linux/stat.h>
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#include <linux/stat.h>
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#include <linux/netfilter.h>
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#include <linux/netfilter.h>
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#include <linux/sysctl.h>
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <linux/init.h>
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#include <net/ip.h>
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#include <net/ip.h>
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#include <net/arp.h>
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#include <net/arp.h>
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|
|
|
|
|
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ax25_cb *volatile ax25_list;
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ax25_cb *volatile ax25_list;
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|
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static struct proto_ops ax25_proto_ops;
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static struct proto_ops ax25_proto_ops;
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|
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/*
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/*
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* Free an allocated ax25 control block. This is done to centralise
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* Free an allocated ax25 control block. This is done to centralise
|
* the MOD count code.
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* the MOD count code.
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*/
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*/
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void ax25_free_cb(ax25_cb *ax25)
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void ax25_free_cb(ax25_cb *ax25)
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{
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{
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if (ax25->digipeat != NULL) {
|
if (ax25->digipeat != NULL) {
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kfree(ax25->digipeat);
|
kfree(ax25->digipeat);
|
ax25->digipeat = NULL;
|
ax25->digipeat = NULL;
|
}
|
}
|
|
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kfree(ax25);
|
kfree(ax25);
|
|
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MOD_DEC_USE_COUNT;
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MOD_DEC_USE_COUNT;
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}
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}
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|
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static void ax25_free_sock(struct sock *sk)
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static void ax25_free_sock(struct sock *sk)
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{
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{
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ax25_free_cb(sk->protinfo.ax25);
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ax25_free_cb(sk->protinfo.ax25);
|
}
|
}
|
|
|
/*
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/*
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* Socket removal during an interrupt is now safe.
|
* Socket removal during an interrupt is now safe.
|
*/
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*/
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static void ax25_remove_socket(ax25_cb *ax25)
|
static void ax25_remove_socket(ax25_cb *ax25)
|
{
|
{
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ax25_cb *s;
|
ax25_cb *s;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags); cli();
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save_flags(flags); cli();
|
|
|
if ((s = ax25_list) == ax25) {
|
if ((s = ax25_list) == ax25) {
|
ax25_list = s->next;
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ax25_list = s->next;
|
restore_flags(flags);
|
restore_flags(flags);
|
return;
|
return;
|
}
|
}
|
|
|
while (s != NULL && s->next != NULL) {
|
while (s != NULL && s->next != NULL) {
|
if (s->next == ax25) {
|
if (s->next == ax25) {
|
s->next = ax25->next;
|
s->next = ax25->next;
|
restore_flags(flags);
|
restore_flags(flags);
|
return;
|
return;
|
}
|
}
|
|
|
s = s->next;
|
s = s->next;
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
/*
|
/*
|
* Kill all bound sockets on a dropped device.
|
* Kill all bound sockets on a dropped device.
|
*/
|
*/
|
static void ax25_kill_by_device(struct net_device *dev)
|
static void ax25_kill_by_device(struct net_device *dev)
|
{
|
{
|
ax25_dev *ax25_dev;
|
ax25_dev *ax25_dev;
|
ax25_cb *s;
|
ax25_cb *s;
|
|
|
if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
|
if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
|
return;
|
return;
|
|
|
for (s = ax25_list; s != NULL; s = s->next) {
|
for (s = ax25_list; s != NULL; s = s->next) {
|
if (s->ax25_dev == ax25_dev) {
|
if (s->ax25_dev == ax25_dev) {
|
s->ax25_dev = NULL;
|
s->ax25_dev = NULL;
|
ax25_disconnect(s, ENETUNREACH);
|
ax25_disconnect(s, ENETUNREACH);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Handle device status changes.
|
* Handle device status changes.
|
*/
|
*/
|
static int ax25_device_event(struct notifier_block *this,unsigned long event, void *ptr)
|
static int ax25_device_event(struct notifier_block *this,unsigned long event, void *ptr)
|
{
|
{
|
struct net_device *dev = (struct net_device *)ptr;
|
struct net_device *dev = (struct net_device *)ptr;
|
|
|
/* Reject non AX.25 devices */
|
/* Reject non AX.25 devices */
|
if (dev->type != ARPHRD_AX25)
|
if (dev->type != ARPHRD_AX25)
|
return NOTIFY_DONE;
|
return NOTIFY_DONE;
|
|
|
switch (event) {
|
switch (event) {
|
case NETDEV_UP:
|
case NETDEV_UP:
|
ax25_dev_device_up(dev);
|
ax25_dev_device_up(dev);
|
break;
|
break;
|
case NETDEV_DOWN:
|
case NETDEV_DOWN:
|
ax25_kill_by_device(dev);
|
ax25_kill_by_device(dev);
|
ax25_rt_device_down(dev);
|
ax25_rt_device_down(dev);
|
ax25_dev_device_down(dev);
|
ax25_dev_device_down(dev);
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
return NOTIFY_DONE;
|
return NOTIFY_DONE;
|
}
|
}
|
|
|
/*
|
/*
|
* Add a socket to the bound sockets list.
|
* Add a socket to the bound sockets list.
|
*/
|
*/
|
void ax25_insert_socket(ax25_cb *ax25)
|
void ax25_insert_socket(ax25_cb *ax25)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
ax25->next = ax25_list;
|
ax25->next = ax25_list;
|
ax25_list = ax25;
|
ax25_list = ax25;
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
/*
|
/*
|
* Find a socket that wants to accept the SABM we have just
|
* Find a socket that wants to accept the SABM we have just
|
* received.
|
* received.
|
*/
|
*/
|
struct sock *ax25_find_listener(ax25_address *addr, int digi, struct net_device *dev, int type)
|
struct sock *ax25_find_listener(ax25_address *addr, int digi, struct net_device *dev, int type)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
ax25_cb *s;
|
ax25_cb *s;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
for (s = ax25_list; s != NULL; s = s->next) {
|
for (s = ax25_list; s != NULL; s = s->next) {
|
if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
|
if ((s->iamdigi && !digi) || (!s->iamdigi && digi))
|
continue;
|
continue;
|
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 && s->sk->type == type && s->sk->state == TCP_LISTEN) {
|
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 && s->sk->type == type && s->sk->state == TCP_LISTEN) {
|
/* If device is null we match any device */
|
/* If device is null we match any device */
|
if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
|
if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return s->sk;
|
return s->sk;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Find an AX.25 socket given both ends.
|
* Find an AX.25 socket given both ends.
|
*/
|
*/
|
struct sock *ax25_find_socket(ax25_address *my_addr, ax25_address *dest_addr, int type)
|
struct sock *ax25_find_socket(ax25_address *my_addr, ax25_address *dest_addr, int type)
|
{
|
{
|
ax25_cb *s;
|
ax25_cb *s;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
for (s = ax25_list; s != NULL; s = s->next) {
|
for (s = ax25_list; s != NULL; s = s->next) {
|
if (s->sk != NULL && ax25cmp(&s->source_addr, my_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->sk->type == type) {
|
if (s->sk != NULL && ax25cmp(&s->source_addr, my_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->sk->type == type) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return s->sk;
|
return s->sk;
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Find an AX.25 control block given both ends. It will only pick up
|
* Find an AX.25 control block given both ends. It will only pick up
|
* floating AX.25 control blocks or non Raw socket bound control blocks.
|
* floating AX.25 control blocks or non Raw socket bound control blocks.
|
*/
|
*/
|
ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr, ax25_digi *digi, struct net_device *dev)
|
ax25_cb *ax25_find_cb(ax25_address *src_addr, ax25_address *dest_addr, ax25_digi *digi, struct net_device *dev)
|
{
|
{
|
ax25_cb *s;
|
ax25_cb *s;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
for (s = ax25_list; s != NULL; s = s->next) {
|
for (s = ax25_list; s != NULL; s = s->next) {
|
if (s->sk != NULL && s->sk->type != SOCK_SEQPACKET)
|
if (s->sk != NULL && s->sk->type != SOCK_SEQPACKET)
|
continue;
|
continue;
|
if (s->ax25_dev == NULL)
|
if (s->ax25_dev == NULL)
|
continue;
|
continue;
|
if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
|
if (ax25cmp(&s->source_addr, src_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
|
if (digi != NULL && digi->ndigi != 0) {
|
if (digi != NULL && digi->ndigi != 0) {
|
if (s->digipeat == NULL)
|
if (s->digipeat == NULL)
|
continue;
|
continue;
|
if (ax25digicmp(s->digipeat, digi) != 0)
|
if (ax25digicmp(s->digipeat, digi) != 0)
|
continue;
|
continue;
|
} else {
|
} else {
|
if (s->digipeat != NULL && s->digipeat->ndigi != 0)
|
if (s->digipeat != NULL && s->digipeat->ndigi != 0)
|
continue;
|
continue;
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
return s;
|
return s;
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Look for any matching address - RAW sockets can bind to arbitrary names
|
* Look for any matching address - RAW sockets can bind to arbitrary names
|
*/
|
*/
|
struct sock *ax25_addr_match(ax25_address *addr)
|
struct sock *ax25_addr_match(ax25_address *addr)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
ax25_cb *s;
|
ax25_cb *s;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
for (s = ax25_list; s != NULL; s = s->next) {
|
for (s = ax25_list; s != NULL; s = s->next) {
|
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 && s->sk->type == SOCK_RAW) {
|
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 && s->sk->type == SOCK_RAW) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return s->sk;
|
return s->sk;
|
}
|
}
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
void ax25_send_to_raw(struct sock *sk, struct sk_buff *skb, int proto)
|
void ax25_send_to_raw(struct sock *sk, struct sk_buff *skb, int proto)
|
{
|
{
|
struct sk_buff *copy;
|
struct sk_buff *copy;
|
|
|
while (sk != NULL) {
|
while (sk != NULL) {
|
if (sk->type == SOCK_RAW &&
|
if (sk->type == SOCK_RAW &&
|
sk->protocol == proto &&
|
sk->protocol == proto &&
|
atomic_read(&sk->rmem_alloc) <= sk->rcvbuf) {
|
atomic_read(&sk->rmem_alloc) <= sk->rcvbuf) {
|
if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
|
if ((copy = skb_clone(skb, GFP_ATOMIC)) == NULL)
|
return;
|
return;
|
|
|
if (sock_queue_rcv_skb(sk, copy) != 0)
|
if (sock_queue_rcv_skb(sk, copy) != 0)
|
kfree_skb(copy);
|
kfree_skb(copy);
|
}
|
}
|
|
|
sk = sk->next;
|
sk = sk->next;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Deferred destroy.
|
* Deferred destroy.
|
*/
|
*/
|
void ax25_destroy_socket(ax25_cb *);
|
void ax25_destroy_socket(ax25_cb *);
|
|
|
/*
|
/*
|
* Handler for deferred kills.
|
* Handler for deferred kills.
|
*/
|
*/
|
static void ax25_destroy_timer(unsigned long data)
|
static void ax25_destroy_timer(unsigned long data)
|
{
|
{
|
ax25_destroy_socket((ax25_cb *)data);
|
ax25_destroy_socket((ax25_cb *)data);
|
}
|
}
|
|
|
/*
|
/*
|
* This is called from user mode and the timers. Thus it protects itself against
|
* This is called from user mode and the timers. Thus it protects itself against
|
* interrupt users but doesn't worry about being called during work.
|
* interrupt users but doesn't worry about being called during work.
|
* Once it is removed from the queue no interrupt or bottom half will
|
* Once it is removed from the queue no interrupt or bottom half will
|
* touch it and we are (fairly 8-) ) safe.
|
* touch it and we are (fairly 8-) ) safe.
|
*/
|
*/
|
void ax25_destroy_socket(ax25_cb *ax25) /* Not static as it's used by the timer */
|
void ax25_destroy_socket(ax25_cb *ax25) /* Not static as it's used by the timer */
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags); cli();
|
save_flags(flags); cli();
|
|
|
ax25_stop_heartbeat(ax25);
|
ax25_stop_heartbeat(ax25);
|
ax25_stop_t1timer(ax25);
|
ax25_stop_t1timer(ax25);
|
ax25_stop_t2timer(ax25);
|
ax25_stop_t2timer(ax25);
|
ax25_stop_t3timer(ax25);
|
ax25_stop_t3timer(ax25);
|
ax25_stop_idletimer(ax25);
|
ax25_stop_idletimer(ax25);
|
|
|
ax25_remove_socket(ax25);
|
ax25_remove_socket(ax25);
|
ax25_clear_queues(ax25); /* Flush the queues */
|
ax25_clear_queues(ax25); /* Flush the queues */
|
|
|
if (ax25->sk != NULL) {
|
if (ax25->sk != NULL) {
|
while ((skb = skb_dequeue(&ax25->sk->receive_queue)) != NULL) {
|
while ((skb = skb_dequeue(&ax25->sk->receive_queue)) != NULL) {
|
if (skb->sk != ax25->sk) { /* A pending connection */
|
if (skb->sk != ax25->sk) { /* A pending connection */
|
skb->sk->dead = 1; /* Queue the unaccepted socket for death */
|
skb->sk->dead = 1; /* Queue the unaccepted socket for death */
|
ax25_start_heartbeat(skb->sk->protinfo.ax25);
|
ax25_start_heartbeat(skb->sk->protinfo.ax25);
|
skb->sk->protinfo.ax25->state = AX25_STATE_0;
|
skb->sk->protinfo.ax25->state = AX25_STATE_0;
|
}
|
}
|
|
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
}
|
}
|
|
|
if (ax25->sk != NULL) {
|
if (ax25->sk != NULL) {
|
if (atomic_read(&ax25->sk->wmem_alloc) != 0 ||
|
if (atomic_read(&ax25->sk->wmem_alloc) != 0 ||
|
atomic_read(&ax25->sk->rmem_alloc) != 0) {
|
atomic_read(&ax25->sk->rmem_alloc) != 0) {
|
/* Defer: outstanding buffers */
|
/* Defer: outstanding buffers */
|
init_timer(&ax25->timer);
|
init_timer(&ax25->timer);
|
ax25->timer.expires = jiffies + 10 * HZ;
|
ax25->timer.expires = jiffies + 10 * HZ;
|
ax25->timer.function = ax25_destroy_timer;
|
ax25->timer.function = ax25_destroy_timer;
|
ax25->timer.data = (unsigned long)ax25;
|
ax25->timer.data = (unsigned long)ax25;
|
add_timer(&ax25->timer);
|
add_timer(&ax25->timer);
|
} else {
|
} else {
|
sk_free(ax25->sk);
|
sk_free(ax25->sk);
|
}
|
}
|
} else {
|
} else {
|
ax25_free_cb(ax25);
|
ax25_free_cb(ax25);
|
}
|
}
|
|
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
/*
|
/*
|
* dl1bke 960311: set parameters for existing AX.25 connections,
|
* dl1bke 960311: set parameters for existing AX.25 connections,
|
* includes a KILL command to abort any connection.
|
* includes a KILL command to abort any connection.
|
* VERY useful for debugging ;-)
|
* VERY useful for debugging ;-)
|
*/
|
*/
|
static int ax25_ctl_ioctl(const unsigned int cmd, void *arg)
|
static int ax25_ctl_ioctl(const unsigned int cmd, void *arg)
|
{
|
{
|
struct ax25_ctl_struct ax25_ctl;
|
struct ax25_ctl_struct ax25_ctl;
|
ax25_digi digi;
|
ax25_digi digi;
|
ax25_dev *ax25_dev;
|
ax25_dev *ax25_dev;
|
ax25_cb *ax25;
|
ax25_cb *ax25;
|
unsigned int k;
|
unsigned int k;
|
|
|
if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
|
if (copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl)))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
|
if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
|
return -ENODEV;
|
return -ENODEV;
|
|
|
if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
|
if (ax25_ctl.digi_count > AX25_MAX_DIGIS)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
digi.ndigi = ax25_ctl.digi_count;
|
digi.ndigi = ax25_ctl.digi_count;
|
for (k = 0; k < digi.ndigi; k++)
|
for (k = 0; k < digi.ndigi; k++)
|
digi.calls[k] = ax25_ctl.digi_addr[k];
|
digi.calls[k] = ax25_ctl.digi_addr[k];
|
|
|
if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
|
if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, &digi, ax25_dev->dev)) == NULL)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
|
|
switch (ax25_ctl.cmd) {
|
switch (ax25_ctl.cmd) {
|
case AX25_KILL:
|
case AX25_KILL:
|
ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
|
ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
|
#ifdef CONFIG_AX25_DAMA_SLAVE
|
#ifdef CONFIG_AX25_DAMA_SLAVE
|
if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
|
if (ax25_dev->dama.slave && ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
|
ax25_dama_off(ax25);
|
ax25_dama_off(ax25);
|
#endif
|
#endif
|
ax25_disconnect(ax25, ENETRESET);
|
ax25_disconnect(ax25, ENETRESET);
|
break;
|
break;
|
|
|
case AX25_WINDOW:
|
case AX25_WINDOW:
|
if (ax25->modulus == AX25_MODULUS) {
|
if (ax25->modulus == AX25_MODULUS) {
|
if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
|
if (ax25_ctl.arg < 1 || ax25_ctl.arg > 7)
|
return -EINVAL;
|
return -EINVAL;
|
} else {
|
} else {
|
if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
|
if (ax25_ctl.arg < 1 || ax25_ctl.arg > 63)
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
ax25->window = ax25_ctl.arg;
|
ax25->window = ax25_ctl.arg;
|
break;
|
break;
|
|
|
case AX25_T1:
|
case AX25_T1:
|
if (ax25_ctl.arg < 1)
|
if (ax25_ctl.arg < 1)
|
return -EINVAL;
|
return -EINVAL;
|
ax25->rtt = (ax25_ctl.arg * HZ) / 2;
|
ax25->rtt = (ax25_ctl.arg * HZ) / 2;
|
ax25->t1 = ax25_ctl.arg * HZ;
|
ax25->t1 = ax25_ctl.arg * HZ;
|
break;
|
break;
|
|
|
case AX25_T2:
|
case AX25_T2:
|
if (ax25_ctl.arg < 1)
|
if (ax25_ctl.arg < 1)
|
return -EINVAL;
|
return -EINVAL;
|
ax25->t2 = ax25_ctl.arg * HZ;
|
ax25->t2 = ax25_ctl.arg * HZ;
|
break;
|
break;
|
|
|
case AX25_N2:
|
case AX25_N2:
|
if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
|
if (ax25_ctl.arg < 1 || ax25_ctl.arg > 31)
|
return -EINVAL;
|
return -EINVAL;
|
ax25->n2count = 0;
|
ax25->n2count = 0;
|
ax25->n2 = ax25_ctl.arg;
|
ax25->n2 = ax25_ctl.arg;
|
break;
|
break;
|
|
|
case AX25_T3:
|
case AX25_T3:
|
if (ax25_ctl.arg < 0)
|
if (ax25_ctl.arg < 0)
|
return -EINVAL;
|
return -EINVAL;
|
ax25->t3 = ax25_ctl.arg * HZ;
|
ax25->t3 = ax25_ctl.arg * HZ;
|
break;
|
break;
|
|
|
case AX25_IDLE:
|
case AX25_IDLE:
|
if (ax25_ctl.arg < 0)
|
if (ax25_ctl.arg < 0)
|
return -EINVAL;
|
return -EINVAL;
|
ax25->idle = ax25_ctl.arg * 60 * HZ;
|
ax25->idle = ax25_ctl.arg * 60 * HZ;
|
break;
|
break;
|
|
|
case AX25_PACLEN:
|
case AX25_PACLEN:
|
if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
|
if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
|
return -EINVAL;
|
return -EINVAL;
|
ax25->paclen = ax25_ctl.arg;
|
ax25->paclen = ax25_ctl.arg;
|
break;
|
break;
|
|
|
default:
|
default:
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* Fill in a created AX.25 created control block with the default
|
* Fill in a created AX.25 created control block with the default
|
* values for a particular device.
|
* values for a particular device.
|
*/
|
*/
|
void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
|
void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
|
{
|
{
|
ax25->ax25_dev = ax25_dev;
|
ax25->ax25_dev = ax25_dev;
|
|
|
if (ax25->ax25_dev != NULL) {
|
if (ax25->ax25_dev != NULL) {
|
ax25->rtt = ax25_dev->values[AX25_VALUES_T1] / 2;
|
ax25->rtt = ax25_dev->values[AX25_VALUES_T1] / 2;
|
ax25->t1 = ax25_dev->values[AX25_VALUES_T1];
|
ax25->t1 = ax25_dev->values[AX25_VALUES_T1];
|
ax25->t2 = ax25_dev->values[AX25_VALUES_T2];
|
ax25->t2 = ax25_dev->values[AX25_VALUES_T2];
|
ax25->t3 = ax25_dev->values[AX25_VALUES_T3];
|
ax25->t3 = ax25_dev->values[AX25_VALUES_T3];
|
ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
|
ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
|
ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
|
ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
|
ax25->idle = ax25_dev->values[AX25_VALUES_IDLE];
|
ax25->idle = ax25_dev->values[AX25_VALUES_IDLE];
|
ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
|
ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
|
|
|
if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
|
if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
|
ax25->modulus = AX25_EMODULUS;
|
ax25->modulus = AX25_EMODULUS;
|
ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
|
ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
|
} else {
|
} else {
|
ax25->modulus = AX25_MODULUS;
|
ax25->modulus = AX25_MODULUS;
|
ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
|
ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
|
}
|
}
|
} else {
|
} else {
|
ax25->rtt = AX25_DEF_T1 / 2;
|
ax25->rtt = AX25_DEF_T1 / 2;
|
ax25->t1 = AX25_DEF_T1;
|
ax25->t1 = AX25_DEF_T1;
|
ax25->t2 = AX25_DEF_T2;
|
ax25->t2 = AX25_DEF_T2;
|
ax25->t3 = AX25_DEF_T3;
|
ax25->t3 = AX25_DEF_T3;
|
ax25->n2 = AX25_DEF_N2;
|
ax25->n2 = AX25_DEF_N2;
|
ax25->paclen = AX25_DEF_PACLEN;
|
ax25->paclen = AX25_DEF_PACLEN;
|
ax25->idle = AX25_DEF_IDLE;
|
ax25->idle = AX25_DEF_IDLE;
|
ax25->backoff = AX25_DEF_BACKOFF;
|
ax25->backoff = AX25_DEF_BACKOFF;
|
|
|
if (AX25_DEF_AXDEFMODE) {
|
if (AX25_DEF_AXDEFMODE) {
|
ax25->modulus = AX25_EMODULUS;
|
ax25->modulus = AX25_EMODULUS;
|
ax25->window = AX25_DEF_EWINDOW;
|
ax25->window = AX25_DEF_EWINDOW;
|
} else {
|
} else {
|
ax25->modulus = AX25_MODULUS;
|
ax25->modulus = AX25_MODULUS;
|
ax25->window = AX25_DEF_WINDOW;
|
ax25->window = AX25_DEF_WINDOW;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Create an empty AX.25 control block.
|
* Create an empty AX.25 control block.
|
*/
|
*/
|
ax25_cb *ax25_create_cb(void)
|
ax25_cb *ax25_create_cb(void)
|
{
|
{
|
ax25_cb *ax25;
|
ax25_cb *ax25;
|
|
|
if ((ax25 = kmalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
|
if ((ax25 = kmalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
|
return NULL;
|
return NULL;
|
|
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
|
|
memset(ax25, 0x00, sizeof(*ax25));
|
memset(ax25, 0x00, sizeof(*ax25));
|
|
|
skb_queue_head_init(&ax25->write_queue);
|
skb_queue_head_init(&ax25->write_queue);
|
skb_queue_head_init(&ax25->frag_queue);
|
skb_queue_head_init(&ax25->frag_queue);
|
skb_queue_head_init(&ax25->ack_queue);
|
skb_queue_head_init(&ax25->ack_queue);
|
skb_queue_head_init(&ax25->reseq_queue);
|
skb_queue_head_init(&ax25->reseq_queue);
|
|
|
init_timer(&ax25->timer);
|
init_timer(&ax25->timer);
|
init_timer(&ax25->t1timer);
|
init_timer(&ax25->t1timer);
|
init_timer(&ax25->t2timer);
|
init_timer(&ax25->t2timer);
|
init_timer(&ax25->t3timer);
|
init_timer(&ax25->t3timer);
|
init_timer(&ax25->idletimer);
|
init_timer(&ax25->idletimer);
|
|
|
ax25_fillin_cb(ax25, NULL);
|
ax25_fillin_cb(ax25, NULL);
|
|
|
ax25->state = AX25_STATE_0;
|
ax25->state = AX25_STATE_0;
|
|
|
return ax25;
|
return ax25;
|
}
|
}
|
|
|
/*
|
/*
|
* Handling for system calls applied via the various interfaces to an
|
* Handling for system calls applied via the various interfaces to an
|
* AX25 socket object
|
* AX25 socket object
|
*/
|
*/
|
|
|
static int ax25_setsockopt(struct socket *sock, int level, int optname, char *optval, int optlen)
|
static int ax25_setsockopt(struct socket *sock, int level, int optname, char *optval, int optlen)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct net_device *dev;
|
struct net_device *dev;
|
char devname[IFNAMSIZ];
|
char devname[IFNAMSIZ];
|
int opt;
|
int opt;
|
|
|
if (level != SOL_AX25)
|
if (level != SOL_AX25)
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
|
|
if (optlen < sizeof(int))
|
if (optlen < sizeof(int))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (get_user(opt, (int *)optval))
|
if (get_user(opt, (int *)optval))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
switch (optname) {
|
switch (optname) {
|
case AX25_WINDOW:
|
case AX25_WINDOW:
|
if (sk->protinfo.ax25->modulus == AX25_MODULUS) {
|
if (sk->protinfo.ax25->modulus == AX25_MODULUS) {
|
if (opt < 1 || opt > 7)
|
if (opt < 1 || opt > 7)
|
return -EINVAL;
|
return -EINVAL;
|
} else {
|
} else {
|
if (opt < 1 || opt > 63)
|
if (opt < 1 || opt > 63)
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
sk->protinfo.ax25->window = opt;
|
sk->protinfo.ax25->window = opt;
|
return 0;
|
return 0;
|
|
|
case AX25_T1:
|
case AX25_T1:
|
if (opt < 1)
|
if (opt < 1)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->rtt = (opt * HZ) / 2;
|
sk->protinfo.ax25->rtt = (opt * HZ) / 2;
|
sk->protinfo.ax25->t1 = opt * HZ;
|
sk->protinfo.ax25->t1 = opt * HZ;
|
return 0;
|
return 0;
|
|
|
case AX25_T2:
|
case AX25_T2:
|
if (opt < 1)
|
if (opt < 1)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->t2 = opt * HZ;
|
sk->protinfo.ax25->t2 = opt * HZ;
|
return 0;
|
return 0;
|
|
|
case AX25_N2:
|
case AX25_N2:
|
if (opt < 1 || opt > 31)
|
if (opt < 1 || opt > 31)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->n2 = opt;
|
sk->protinfo.ax25->n2 = opt;
|
return 0;
|
return 0;
|
|
|
case AX25_T3:
|
case AX25_T3:
|
if (opt < 1)
|
if (opt < 1)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->t3 = opt * HZ;
|
sk->protinfo.ax25->t3 = opt * HZ;
|
return 0;
|
return 0;
|
|
|
case AX25_IDLE:
|
case AX25_IDLE:
|
if (opt < 0)
|
if (opt < 0)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->idle = opt * 60 * HZ;
|
sk->protinfo.ax25->idle = opt * 60 * HZ;
|
return 0;
|
return 0;
|
|
|
case AX25_BACKOFF:
|
case AX25_BACKOFF:
|
if (opt < 0 || opt > 2)
|
if (opt < 0 || opt > 2)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->backoff = opt;
|
sk->protinfo.ax25->backoff = opt;
|
return 0;
|
return 0;
|
|
|
case AX25_EXTSEQ:
|
case AX25_EXTSEQ:
|
sk->protinfo.ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
|
sk->protinfo.ax25->modulus = opt ? AX25_EMODULUS : AX25_MODULUS;
|
return 0;
|
return 0;
|
|
|
case AX25_PIDINCL:
|
case AX25_PIDINCL:
|
sk->protinfo.ax25->pidincl = opt ? 1 : 0;
|
sk->protinfo.ax25->pidincl = opt ? 1 : 0;
|
return 0;
|
return 0;
|
|
|
case AX25_IAMDIGI:
|
case AX25_IAMDIGI:
|
sk->protinfo.ax25->iamdigi = opt ? 1 : 0;
|
sk->protinfo.ax25->iamdigi = opt ? 1 : 0;
|
return 0;
|
return 0;
|
|
|
case AX25_PACLEN:
|
case AX25_PACLEN:
|
if (opt < 16 || opt > 65535)
|
if (opt < 16 || opt > 65535)
|
return -EINVAL;
|
return -EINVAL;
|
sk->protinfo.ax25->paclen = opt;
|
sk->protinfo.ax25->paclen = opt;
|
return 0;
|
return 0;
|
|
|
case SO_BINDTODEVICE:
|
case SO_BINDTODEVICE:
|
if (optlen > IFNAMSIZ) optlen=IFNAMSIZ;
|
if (optlen > IFNAMSIZ) optlen=IFNAMSIZ;
|
if (copy_from_user(devname, optval, optlen))
|
if (copy_from_user(devname, optval, optlen))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
dev = dev_get_by_name(devname);
|
dev = dev_get_by_name(devname);
|
if (dev == NULL) return -ENODEV;
|
if (dev == NULL) return -ENODEV;
|
|
|
if (sk->type == SOCK_SEQPACKET &&
|
if (sk->type == SOCK_SEQPACKET &&
|
(sock->state != SS_UNCONNECTED || sk->state == TCP_LISTEN))
|
(sock->state != SS_UNCONNECTED || sk->state == TCP_LISTEN))
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
|
|
sk->protinfo.ax25->ax25_dev = ax25_dev_ax25dev(dev);
|
sk->protinfo.ax25->ax25_dev = ax25_dev_ax25dev(dev);
|
ax25_fillin_cb(sk->protinfo.ax25, sk->protinfo.ax25->ax25_dev);
|
ax25_fillin_cb(sk->protinfo.ax25, sk->protinfo.ax25->ax25_dev);
|
return 0;
|
return 0;
|
|
|
default:
|
default:
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
}
|
}
|
}
|
}
|
|
|
static int ax25_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen)
|
static int ax25_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct ax25_dev *ax25_dev;
|
struct ax25_dev *ax25_dev;
|
char devname[IFNAMSIZ];
|
char devname[IFNAMSIZ];
|
void *valptr;
|
void *valptr;
|
int val = 0;
|
int val = 0;
|
int maxlen, length;
|
int maxlen, length;
|
|
|
if (level != SOL_AX25)
|
if (level != SOL_AX25)
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
|
|
if (get_user(maxlen, optlen))
|
if (get_user(maxlen, optlen))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
if (maxlen < 1)
|
if (maxlen < 1)
|
return -EFAULT;
|
return -EFAULT;
|
|
|
valptr = (void *) &val;
|
valptr = (void *) &val;
|
length = min_t(unsigned int, maxlen, sizeof(int));
|
length = min_t(unsigned int, maxlen, sizeof(int));
|
|
|
switch (optname) {
|
switch (optname) {
|
case AX25_WINDOW:
|
case AX25_WINDOW:
|
val = sk->protinfo.ax25->window;
|
val = sk->protinfo.ax25->window;
|
break;
|
break;
|
|
|
case AX25_T1:
|
case AX25_T1:
|
val = sk->protinfo.ax25->t1 / HZ;
|
val = sk->protinfo.ax25->t1 / HZ;
|
break;
|
break;
|
|
|
case AX25_T2:
|
case AX25_T2:
|
val = sk->protinfo.ax25->t2 / HZ;
|
val = sk->protinfo.ax25->t2 / HZ;
|
break;
|
break;
|
|
|
case AX25_N2:
|
case AX25_N2:
|
val = sk->protinfo.ax25->n2;
|
val = sk->protinfo.ax25->n2;
|
break;
|
break;
|
|
|
case AX25_T3:
|
case AX25_T3:
|
val = sk->protinfo.ax25->t3 / HZ;
|
val = sk->protinfo.ax25->t3 / HZ;
|
break;
|
break;
|
|
|
case AX25_IDLE:
|
case AX25_IDLE:
|
val = sk->protinfo.ax25->idle / (60 * HZ);
|
val = sk->protinfo.ax25->idle / (60 * HZ);
|
break;
|
break;
|
|
|
case AX25_BACKOFF:
|
case AX25_BACKOFF:
|
val = sk->protinfo.ax25->backoff;
|
val = sk->protinfo.ax25->backoff;
|
break;
|
break;
|
|
|
case AX25_EXTSEQ:
|
case AX25_EXTSEQ:
|
val = (sk->protinfo.ax25->modulus == AX25_EMODULUS);
|
val = (sk->protinfo.ax25->modulus == AX25_EMODULUS);
|
break;
|
break;
|
|
|
case AX25_PIDINCL:
|
case AX25_PIDINCL:
|
val = sk->protinfo.ax25->pidincl;
|
val = sk->protinfo.ax25->pidincl;
|
break;
|
break;
|
|
|
case AX25_IAMDIGI:
|
case AX25_IAMDIGI:
|
val = sk->protinfo.ax25->iamdigi;
|
val = sk->protinfo.ax25->iamdigi;
|
break;
|
break;
|
|
|
case AX25_PACLEN:
|
case AX25_PACLEN:
|
val = sk->protinfo.ax25->paclen;
|
val = sk->protinfo.ax25->paclen;
|
break;
|
break;
|
|
|
case SO_BINDTODEVICE:
|
case SO_BINDTODEVICE:
|
ax25_dev = sk->protinfo.ax25->ax25_dev;
|
ax25_dev = sk->protinfo.ax25->ax25_dev;
|
|
|
if (ax25_dev != NULL && ax25_dev->dev != NULL) {
|
if (ax25_dev != NULL && ax25_dev->dev != NULL) {
|
strncpy(devname, ax25_dev->dev->name, IFNAMSIZ);
|
strncpy(devname, ax25_dev->dev->name, IFNAMSIZ);
|
length = min_t(unsigned int, strlen(ax25_dev->dev->name)+1, maxlen);
|
length = min_t(unsigned int, strlen(ax25_dev->dev->name)+1, maxlen);
|
devname[length-1] = '\0';
|
devname[length-1] = '\0';
|
} else {
|
} else {
|
*devname = '\0';
|
*devname = '\0';
|
length = 1;
|
length = 1;
|
}
|
}
|
|
|
valptr = (void *) devname;
|
valptr = (void *) devname;
|
break;
|
break;
|
|
|
default:
|
default:
|
return -ENOPROTOOPT;
|
return -ENOPROTOOPT;
|
}
|
}
|
|
|
if (put_user(length, optlen))
|
if (put_user(length, optlen))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
|
return copy_to_user(optval, valptr, length) ? -EFAULT : 0;
|
}
|
}
|
|
|
static int ax25_listen(struct socket *sock, int backlog)
|
static int ax25_listen(struct socket *sock, int backlog)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
if (sk->type == SOCK_SEQPACKET && sk->state != TCP_LISTEN) {
|
if (sk->type == SOCK_SEQPACKET && sk->state != TCP_LISTEN) {
|
sk->max_ack_backlog = backlog;
|
sk->max_ack_backlog = backlog;
|
sk->state = TCP_LISTEN;
|
sk->state = TCP_LISTEN;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
}
|
}
|
|
|
int ax25_create(struct socket *sock, int protocol)
|
int ax25_create(struct socket *sock, int protocol)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
ax25_cb *ax25;
|
ax25_cb *ax25;
|
|
|
switch (sock->type) {
|
switch (sock->type) {
|
case SOCK_DGRAM:
|
case SOCK_DGRAM:
|
if (protocol == 0 || protocol == PF_AX25)
|
if (protocol == 0 || protocol == PF_AX25)
|
protocol = AX25_P_TEXT;
|
protocol = AX25_P_TEXT;
|
break;
|
break;
|
case SOCK_SEQPACKET:
|
case SOCK_SEQPACKET:
|
switch (protocol) {
|
switch (protocol) {
|
case 0:
|
case 0:
|
case PF_AX25: /* For CLX */
|
case PF_AX25: /* For CLX */
|
protocol = AX25_P_TEXT;
|
protocol = AX25_P_TEXT;
|
break;
|
break;
|
case AX25_P_SEGMENT:
|
case AX25_P_SEGMENT:
|
#ifdef CONFIG_INET
|
#ifdef CONFIG_INET
|
case AX25_P_ARP:
|
case AX25_P_ARP:
|
case AX25_P_IP:
|
case AX25_P_IP:
|
#endif
|
#endif
|
#ifdef CONFIG_NETROM
|
#ifdef CONFIG_NETROM
|
case AX25_P_NETROM:
|
case AX25_P_NETROM:
|
#endif
|
#endif
|
#ifdef CONFIG_ROSE
|
#ifdef CONFIG_ROSE
|
case AX25_P_ROSE:
|
case AX25_P_ROSE:
|
#endif
|
#endif
|
return -ESOCKTNOSUPPORT;
|
return -ESOCKTNOSUPPORT;
|
#ifdef CONFIG_NETROM_MODULE
|
#ifdef CONFIG_NETROM_MODULE
|
case AX25_P_NETROM:
|
case AX25_P_NETROM:
|
if (ax25_protocol_is_registered(AX25_P_NETROM))
|
if (ax25_protocol_is_registered(AX25_P_NETROM))
|
return -ESOCKTNOSUPPORT;
|
return -ESOCKTNOSUPPORT;
|
#endif
|
#endif
|
#ifdef CONFIG_ROSE_MODULE
|
#ifdef CONFIG_ROSE_MODULE
|
case AX25_P_ROSE:
|
case AX25_P_ROSE:
|
if (ax25_protocol_is_registered(AX25_P_ROSE))
|
if (ax25_protocol_is_registered(AX25_P_ROSE))
|
return -ESOCKTNOSUPPORT;
|
return -ESOCKTNOSUPPORT;
|
#endif
|
#endif
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
break;
|
break;
|
case SOCK_RAW:
|
case SOCK_RAW:
|
break;
|
break;
|
default:
|
default:
|
return -ESOCKTNOSUPPORT;
|
return -ESOCKTNOSUPPORT;
|
}
|
}
|
|
|
if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, 1)) == NULL)
|
if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, 1)) == NULL)
|
return -ENOMEM;
|
return -ENOMEM;
|
|
|
if ((ax25 = ax25_create_cb()) == NULL) {
|
if ((ax25 = ax25_create_cb()) == NULL) {
|
sk_free(sk);
|
sk_free(sk);
|
return -ENOMEM;
|
return -ENOMEM;
|
}
|
}
|
|
|
sock_init_data(sock, sk);
|
sock_init_data(sock, sk);
|
|
|
sk->destruct = ax25_free_sock;
|
sk->destruct = ax25_free_sock;
|
sock->ops = &ax25_proto_ops;
|
sock->ops = &ax25_proto_ops;
|
sk->protocol = protocol;
|
sk->protocol = protocol;
|
|
|
ax25->sk = sk;
|
ax25->sk = sk;
|
sk->protinfo.ax25 = ax25;
|
sk->protinfo.ax25 = ax25;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
|
struct sock *ax25_make_new(struct sock *osk, struct ax25_dev *ax25_dev)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
ax25_cb *ax25;
|
ax25_cb *ax25;
|
|
|
if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, 1)) == NULL)
|
if ((sk = sk_alloc(PF_AX25, GFP_ATOMIC, 1)) == NULL)
|
return NULL;
|
return NULL;
|
|
|
if ((ax25 = ax25_create_cb()) == NULL) {
|
if ((ax25 = ax25_create_cb()) == NULL) {
|
sk_free(sk);
|
sk_free(sk);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
switch (osk->type) {
|
switch (osk->type) {
|
case SOCK_DGRAM:
|
case SOCK_DGRAM:
|
break;
|
break;
|
case SOCK_SEQPACKET:
|
case SOCK_SEQPACKET:
|
break;
|
break;
|
default:
|
default:
|
sk_free(sk);
|
sk_free(sk);
|
ax25_free_cb(ax25);
|
ax25_free_cb(ax25);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
sock_init_data(NULL, sk);
|
sock_init_data(NULL, sk);
|
|
|
sk->destruct = ax25_free_sock;
|
sk->destruct = ax25_free_sock;
|
sk->type = osk->type;
|
sk->type = osk->type;
|
sk->socket = osk->socket;
|
sk->socket = osk->socket;
|
sk->priority = osk->priority;
|
sk->priority = osk->priority;
|
sk->protocol = osk->protocol;
|
sk->protocol = osk->protocol;
|
sk->rcvbuf = osk->rcvbuf;
|
sk->rcvbuf = osk->rcvbuf;
|
sk->sndbuf = osk->sndbuf;
|
sk->sndbuf = osk->sndbuf;
|
sk->debug = osk->debug;
|
sk->debug = osk->debug;
|
sk->state = TCP_ESTABLISHED;
|
sk->state = TCP_ESTABLISHED;
|
sk->sleep = osk->sleep;
|
sk->sleep = osk->sleep;
|
sk->zapped = osk->zapped;
|
sk->zapped = osk->zapped;
|
|
|
ax25->modulus = osk->protinfo.ax25->modulus;
|
ax25->modulus = osk->protinfo.ax25->modulus;
|
ax25->backoff = osk->protinfo.ax25->backoff;
|
ax25->backoff = osk->protinfo.ax25->backoff;
|
ax25->pidincl = osk->protinfo.ax25->pidincl;
|
ax25->pidincl = osk->protinfo.ax25->pidincl;
|
ax25->iamdigi = osk->protinfo.ax25->iamdigi;
|
ax25->iamdigi = osk->protinfo.ax25->iamdigi;
|
ax25->rtt = osk->protinfo.ax25->rtt;
|
ax25->rtt = osk->protinfo.ax25->rtt;
|
ax25->t1 = osk->protinfo.ax25->t1;
|
ax25->t1 = osk->protinfo.ax25->t1;
|
ax25->t2 = osk->protinfo.ax25->t2;
|
ax25->t2 = osk->protinfo.ax25->t2;
|
ax25->t3 = osk->protinfo.ax25->t3;
|
ax25->t3 = osk->protinfo.ax25->t3;
|
ax25->n2 = osk->protinfo.ax25->n2;
|
ax25->n2 = osk->protinfo.ax25->n2;
|
ax25->idle = osk->protinfo.ax25->idle;
|
ax25->idle = osk->protinfo.ax25->idle;
|
ax25->paclen = osk->protinfo.ax25->paclen;
|
ax25->paclen = osk->protinfo.ax25->paclen;
|
ax25->window = osk->protinfo.ax25->window;
|
ax25->window = osk->protinfo.ax25->window;
|
|
|
ax25->ax25_dev = ax25_dev;
|
ax25->ax25_dev = ax25_dev;
|
ax25->source_addr = osk->protinfo.ax25->source_addr;
|
ax25->source_addr = osk->protinfo.ax25->source_addr;
|
|
|
if (osk->protinfo.ax25->digipeat != NULL) {
|
if (osk->protinfo.ax25->digipeat != NULL) {
|
if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
|
if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
|
sk_free(sk);
|
sk_free(sk);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
memcpy(ax25->digipeat, osk->protinfo.ax25->digipeat, sizeof(ax25_digi));
|
memcpy(ax25->digipeat, osk->protinfo.ax25->digipeat, sizeof(ax25_digi));
|
}
|
}
|
|
|
sk->protinfo.ax25 = ax25;
|
sk->protinfo.ax25 = ax25;
|
ax25->sk = sk;
|
ax25->sk = sk;
|
|
|
return sk;
|
return sk;
|
}
|
}
|
|
|
static int ax25_release(struct socket *sock)
|
static int ax25_release(struct socket *sock)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
if (sk == NULL) return 0;
|
if (sk == NULL) return 0;
|
|
|
if (sk->type == SOCK_SEQPACKET) {
|
if (sk->type == SOCK_SEQPACKET) {
|
switch (sk->protinfo.ax25->state) {
|
switch (sk->protinfo.ax25->state) {
|
case AX25_STATE_0:
|
case AX25_STATE_0:
|
ax25_disconnect(sk->protinfo.ax25, 0);
|
ax25_disconnect(sk->protinfo.ax25, 0);
|
ax25_destroy_socket(sk->protinfo.ax25);
|
ax25_destroy_socket(sk->protinfo.ax25);
|
break;
|
break;
|
|
|
case AX25_STATE_1:
|
case AX25_STATE_1:
|
case AX25_STATE_2:
|
case AX25_STATE_2:
|
ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
|
ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
|
ax25_disconnect(sk->protinfo.ax25, 0);
|
ax25_disconnect(sk->protinfo.ax25, 0);
|
ax25_destroy_socket(sk->protinfo.ax25);
|
ax25_destroy_socket(sk->protinfo.ax25);
|
break;
|
break;
|
|
|
case AX25_STATE_3:
|
case AX25_STATE_3:
|
case AX25_STATE_4:
|
case AX25_STATE_4:
|
ax25_clear_queues(sk->protinfo.ax25);
|
ax25_clear_queues(sk->protinfo.ax25);
|
sk->protinfo.ax25->n2count = 0;
|
sk->protinfo.ax25->n2count = 0;
|
switch (sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
|
switch (sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
|
case AX25_PROTO_STD_SIMPLEX:
|
case AX25_PROTO_STD_SIMPLEX:
|
case AX25_PROTO_STD_DUPLEX:
|
case AX25_PROTO_STD_DUPLEX:
|
ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
|
ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
|
ax25_stop_t2timer(sk->protinfo.ax25);
|
ax25_stop_t2timer(sk->protinfo.ax25);
|
ax25_stop_t3timer(sk->protinfo.ax25);
|
ax25_stop_t3timer(sk->protinfo.ax25);
|
ax25_stop_idletimer(sk->protinfo.ax25);
|
ax25_stop_idletimer(sk->protinfo.ax25);
|
break;
|
break;
|
#ifdef CONFIG_AX25_DAMA_SLAVE
|
#ifdef CONFIG_AX25_DAMA_SLAVE
|
case AX25_PROTO_DAMA_SLAVE:
|
case AX25_PROTO_DAMA_SLAVE:
|
ax25_stop_t3timer(sk->protinfo.ax25);
|
ax25_stop_t3timer(sk->protinfo.ax25);
|
ax25_stop_idletimer(sk->protinfo.ax25);
|
ax25_stop_idletimer(sk->protinfo.ax25);
|
break;
|
break;
|
#endif
|
#endif
|
}
|
}
|
ax25_calculate_t1(sk->protinfo.ax25);
|
ax25_calculate_t1(sk->protinfo.ax25);
|
ax25_start_t1timer(sk->protinfo.ax25);
|
ax25_start_t1timer(sk->protinfo.ax25);
|
sk->protinfo.ax25->state = AX25_STATE_2;
|
sk->protinfo.ax25->state = AX25_STATE_2;
|
sk->state = TCP_CLOSE;
|
sk->state = TCP_CLOSE;
|
sk->shutdown |= SEND_SHUTDOWN;
|
sk->shutdown |= SEND_SHUTDOWN;
|
sk->state_change(sk);
|
sk->state_change(sk);
|
sock_orphan(sk);
|
sock_orphan(sk);
|
sk->destroy = 1;
|
sk->destroy = 1;
|
break;
|
break;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
} else {
|
} else {
|
sk->state = TCP_CLOSE;
|
sk->state = TCP_CLOSE;
|
sk->shutdown |= SEND_SHUTDOWN;
|
sk->shutdown |= SEND_SHUTDOWN;
|
sk->state_change(sk);
|
sk->state_change(sk);
|
sock_orphan(sk);
|
sock_orphan(sk);
|
ax25_destroy_socket(sk->protinfo.ax25);
|
ax25_destroy_socket(sk->protinfo.ax25);
|
}
|
}
|
|
|
sock->sk = NULL;
|
sock->sk = NULL;
|
sk->socket = NULL; /* Not used, but we should do this */
|
sk->socket = NULL; /* Not used, but we should do this */
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* We support a funny extension here so you can (as root) give any callsign
|
* We support a funny extension here so you can (as root) give any callsign
|
* digipeated via a local address as source. This hack is obsolete now
|
* digipeated via a local address as source. This hack is obsolete now
|
* that we've implemented support for SO_BINDTODEVICE. It is however small
|
* that we've implemented support for SO_BINDTODEVICE. It is however small
|
* and trivially backward compatible.
|
* and trivially backward compatible.
|
*/
|
*/
|
static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
|
struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
|
ax25_address *call;
|
ax25_address *call;
|
ax25_dev *ax25_dev = NULL;
|
ax25_dev *ax25_dev = NULL;
|
|
|
if (sk->zapped == 0)
|
if (sk->zapped == 0)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (addr_len != sizeof(struct sockaddr_ax25) &&
|
if (addr_len != sizeof(struct sockaddr_ax25) &&
|
addr_len != sizeof(struct full_sockaddr_ax25)) {
|
addr_len != sizeof(struct full_sockaddr_ax25)) {
|
/* support for old structure may go away some time */
|
/* support for old structure may go away some time */
|
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
|
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
|
(addr_len > sizeof(struct full_sockaddr_ax25)))
|
(addr_len > sizeof(struct full_sockaddr_ax25)))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
|
printk(KERN_WARNING "ax25_bind(): %s uses old (6 digipeater) socket structure.\n",
|
current->comm);
|
current->comm);
|
}
|
}
|
|
|
if (addr->fsa_ax25.sax25_family != AF_AX25)
|
if (addr->fsa_ax25.sax25_family != AF_AX25)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
call = ax25_findbyuid(current->euid);
|
call = ax25_findbyuid(current->euid);
|
if (call == NULL && ax25_uid_policy && !capable(CAP_NET_ADMIN))
|
if (call == NULL && ax25_uid_policy && !capable(CAP_NET_ADMIN))
|
return -EACCES;
|
return -EACCES;
|
|
|
if (call == NULL)
|
if (call == NULL)
|
sk->protinfo.ax25->source_addr = addr->fsa_ax25.sax25_call;
|
sk->protinfo.ax25->source_addr = addr->fsa_ax25.sax25_call;
|
else
|
else
|
sk->protinfo.ax25->source_addr = *call;
|
sk->protinfo.ax25->source_addr = *call;
|
|
|
/*
|
/*
|
* User already set interface with SO_BINDTODEVICE
|
* User already set interface with SO_BINDTODEVICE
|
*/
|
*/
|
|
|
if (sk->protinfo.ax25->ax25_dev != NULL)
|
if (sk->protinfo.ax25->ax25_dev != NULL)
|
goto done;
|
goto done;
|
|
|
if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
|
if (addr_len > sizeof(struct sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
|
if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
|
if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) != 0 &&
|
(ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL)
|
(ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL)
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
} else {
|
} else {
|
if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL)
|
if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL)
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
}
|
}
|
|
|
if (ax25_dev != NULL)
|
if (ax25_dev != NULL)
|
ax25_fillin_cb(sk->protinfo.ax25, ax25_dev);
|
ax25_fillin_cb(sk->protinfo.ax25, ax25_dev);
|
|
|
done:
|
done:
|
ax25_insert_socket(sk->protinfo.ax25);
|
ax25_insert_socket(sk->protinfo.ax25);
|
sk->zapped = 0;
|
sk->zapped = 0;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* FIXME: nonblock behaviour looks like it may have a bug.
|
* FIXME: nonblock behaviour looks like it may have a bug.
|
*/
|
*/
|
static int ax25_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
|
static int ax25_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
|
ax25_digi *digi = NULL;
|
ax25_digi *digi = NULL;
|
int ct = 0, err;
|
int ct = 0, err;
|
|
|
/* deal with restarts */
|
/* deal with restarts */
|
if (sock->state == SS_CONNECTING) {
|
if (sock->state == SS_CONNECTING) {
|
switch (sk->state) {
|
switch (sk->state) {
|
case TCP_SYN_SENT: /* still trying */
|
case TCP_SYN_SENT: /* still trying */
|
return -EINPROGRESS;
|
return -EINPROGRESS;
|
|
|
case TCP_ESTABLISHED: /* connection established */
|
case TCP_ESTABLISHED: /* connection established */
|
sock->state = SS_CONNECTED;
|
sock->state = SS_CONNECTED;
|
return 0;
|
return 0;
|
|
|
case TCP_CLOSE: /* connection refused */
|
case TCP_CLOSE: /* connection refused */
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
return -ECONNREFUSED;
|
return -ECONNREFUSED;
|
}
|
}
|
}
|
}
|
|
|
if (sk->state == TCP_ESTABLISHED && sk->type == SOCK_SEQPACKET)
|
if (sk->state == TCP_ESTABLISHED && sk->type == SOCK_SEQPACKET)
|
return -EISCONN; /* No reconnect on a seqpacket socket */
|
return -EISCONN; /* No reconnect on a seqpacket socket */
|
|
|
sk->state = TCP_CLOSE;
|
sk->state = TCP_CLOSE;
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
|
|
/*
|
/*
|
* some sanity checks. code further down depends on this
|
* some sanity checks. code further down depends on this
|
*/
|
*/
|
|
|
if (addr_len == sizeof(struct sockaddr_ax25)) {
|
if (addr_len == sizeof(struct sockaddr_ax25)) {
|
/* support for this will go away in early 2.5.x */
|
/* support for this will go away in early 2.5.x */
|
printk(KERN_WARNING "ax25_connect(): %s uses obsolete socket structure\n",
|
printk(KERN_WARNING "ax25_connect(): %s uses obsolete socket structure\n",
|
current->comm);
|
current->comm);
|
}
|
}
|
else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
|
else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
|
/* support for old structure may go away some time */
|
/* support for old structure may go away some time */
|
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
|
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
|
(addr_len > sizeof(struct full_sockaddr_ax25)))
|
(addr_len > sizeof(struct full_sockaddr_ax25)))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
printk(KERN_WARNING "ax25_connect(): %s uses old (6 digipeater) socket structure.\n",
|
printk(KERN_WARNING "ax25_connect(): %s uses old (6 digipeater) socket structure.\n",
|
current->comm);
|
current->comm);
|
}
|
}
|
|
|
if (fsa->fsa_ax25.sax25_family != AF_AX25)
|
if (fsa->fsa_ax25.sax25_family != AF_AX25)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (sk->protinfo.ax25->digipeat != NULL) {
|
if (sk->protinfo.ax25->digipeat != NULL) {
|
kfree(sk->protinfo.ax25->digipeat);
|
kfree(sk->protinfo.ax25->digipeat);
|
sk->protinfo.ax25->digipeat = NULL;
|
sk->protinfo.ax25->digipeat = NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* Handle digi-peaters to be used.
|
* Handle digi-peaters to be used.
|
*/
|
*/
|
if (addr_len > sizeof(struct sockaddr_ax25) && fsa->fsa_ax25.sax25_ndigis != 0) {
|
if (addr_len > sizeof(struct sockaddr_ax25) && fsa->fsa_ax25.sax25_ndigis != 0) {
|
/* Valid number of digipeaters ? */
|
/* Valid number of digipeaters ? */
|
if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS)
|
if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL)
|
if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL)
|
return -ENOBUFS;
|
return -ENOBUFS;
|
|
|
digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
|
digi->ndigi = fsa->fsa_ax25.sax25_ndigis;
|
digi->lastrepeat = -1;
|
digi->lastrepeat = -1;
|
|
|
while (ct < fsa->fsa_ax25.sax25_ndigis) {
|
while (ct < fsa->fsa_ax25.sax25_ndigis) {
|
if ((fsa->fsa_digipeater[ct].ax25_call[6] & AX25_HBIT) && sk->protinfo.ax25->iamdigi) {
|
if ((fsa->fsa_digipeater[ct].ax25_call[6] & AX25_HBIT) && sk->protinfo.ax25->iamdigi) {
|
digi->repeated[ct] = 1;
|
digi->repeated[ct] = 1;
|
digi->lastrepeat = ct;
|
digi->lastrepeat = ct;
|
} else {
|
} else {
|
digi->repeated[ct] = 0;
|
digi->repeated[ct] = 0;
|
}
|
}
|
digi->calls[ct] = fsa->fsa_digipeater[ct];
|
digi->calls[ct] = fsa->fsa_digipeater[ct];
|
ct++;
|
ct++;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Must bind first - autobinding in this may or may not work. If
|
* Must bind first - autobinding in this may or may not work. If
|
* the socket is already bound, check to see if the device has
|
* the socket is already bound, check to see if the device has
|
* been filled in, error if it hasn't.
|
* been filled in, error if it hasn't.
|
*/
|
*/
|
if (sk->zapped) {
|
if (sk->zapped) {
|
/* check if we can remove this feature. It is broken. */
|
/* check if we can remove this feature. It is broken. */
|
printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
|
printk(KERN_WARNING "ax25_connect(): %s uses autobind, please contact jreuter@yaina.de\n",
|
current->comm);
|
current->comm);
|
if ((err = ax25_rt_autobind(sk->protinfo.ax25, &fsa->fsa_ax25.sax25_call)) < 0)
|
if ((err = ax25_rt_autobind(sk->protinfo.ax25, &fsa->fsa_ax25.sax25_call)) < 0)
|
return err;
|
return err;
|
ax25_fillin_cb(sk->protinfo.ax25, sk->protinfo.ax25->ax25_dev);
|
ax25_fillin_cb(sk->protinfo.ax25, sk->protinfo.ax25->ax25_dev);
|
ax25_insert_socket(sk->protinfo.ax25);
|
ax25_insert_socket(sk->protinfo.ax25);
|
} else {
|
} else {
|
if (sk->protinfo.ax25->ax25_dev == NULL)
|
if (sk->protinfo.ax25->ax25_dev == NULL)
|
return -EHOSTUNREACH;
|
return -EHOSTUNREACH;
|
}
|
}
|
|
|
if (sk->type == SOCK_SEQPACKET && ax25_find_cb(&sk->protinfo.ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi, sk->protinfo.ax25->ax25_dev->dev) != NULL) {
|
if (sk->type == SOCK_SEQPACKET && ax25_find_cb(&sk->protinfo.ax25->source_addr, &fsa->fsa_ax25.sax25_call, digi, sk->protinfo.ax25->ax25_dev->dev) != NULL) {
|
if (digi != NULL) kfree(digi);
|
if (digi != NULL) kfree(digi);
|
return -EADDRINUSE; /* Already such a connection */
|
return -EADDRINUSE; /* Already such a connection */
|
}
|
}
|
|
|
sk->protinfo.ax25->dest_addr = fsa->fsa_ax25.sax25_call;
|
sk->protinfo.ax25->dest_addr = fsa->fsa_ax25.sax25_call;
|
sk->protinfo.ax25->digipeat = digi;
|
sk->protinfo.ax25->digipeat = digi;
|
|
|
/* First the easy one */
|
/* First the easy one */
|
if (sk->type != SOCK_SEQPACKET) {
|
if (sk->type != SOCK_SEQPACKET) {
|
sock->state = SS_CONNECTED;
|
sock->state = SS_CONNECTED;
|
sk->state = TCP_ESTABLISHED;
|
sk->state = TCP_ESTABLISHED;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Move to connecting socket, ax.25 lapb WAIT_UA.. */
|
/* Move to connecting socket, ax.25 lapb WAIT_UA.. */
|
sock->state = SS_CONNECTING;
|
sock->state = SS_CONNECTING;
|
sk->state = TCP_SYN_SENT;
|
sk->state = TCP_SYN_SENT;
|
|
|
switch (sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
|
switch (sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
|
case AX25_PROTO_STD_SIMPLEX:
|
case AX25_PROTO_STD_SIMPLEX:
|
case AX25_PROTO_STD_DUPLEX:
|
case AX25_PROTO_STD_DUPLEX:
|
ax25_std_establish_data_link(sk->protinfo.ax25);
|
ax25_std_establish_data_link(sk->protinfo.ax25);
|
break;
|
break;
|
|
|
#ifdef CONFIG_AX25_DAMA_SLAVE
|
#ifdef CONFIG_AX25_DAMA_SLAVE
|
case AX25_PROTO_DAMA_SLAVE:
|
case AX25_PROTO_DAMA_SLAVE:
|
sk->protinfo.ax25->modulus = AX25_MODULUS;
|
sk->protinfo.ax25->modulus = AX25_MODULUS;
|
sk->protinfo.ax25->window = sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_WINDOW];
|
sk->protinfo.ax25->window = sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_WINDOW];
|
if (sk->protinfo.ax25->ax25_dev->dama.slave)
|
if (sk->protinfo.ax25->ax25_dev->dama.slave)
|
ax25_ds_establish_data_link(sk->protinfo.ax25);
|
ax25_ds_establish_data_link(sk->protinfo.ax25);
|
else
|
else
|
ax25_std_establish_data_link(sk->protinfo.ax25);
|
ax25_std_establish_data_link(sk->protinfo.ax25);
|
break;
|
break;
|
#endif
|
#endif
|
}
|
}
|
|
|
sk->protinfo.ax25->state = AX25_STATE_1;
|
sk->protinfo.ax25->state = AX25_STATE_1;
|
|
|
ax25_start_heartbeat(sk->protinfo.ax25);
|
ax25_start_heartbeat(sk->protinfo.ax25);
|
|
|
/* Now the loop */
|
/* Now the loop */
|
if (sk->state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
|
if (sk->state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
|
return -EINPROGRESS;
|
return -EINPROGRESS;
|
|
|
cli(); /* To avoid races on the sleep */
|
cli(); /* To avoid races on the sleep */
|
|
|
/* A DM or timeout will go to closed, a UA will go to ABM */
|
/* A DM or timeout will go to closed, a UA will go to ABM */
|
while (sk->state == TCP_SYN_SENT) {
|
while (sk->state == TCP_SYN_SENT) {
|
interruptible_sleep_on(sk->sleep);
|
interruptible_sleep_on(sk->sleep);
|
if (signal_pending(current)) {
|
if (signal_pending(current)) {
|
sti();
|
sti();
|
return -ERESTARTSYS;
|
return -ERESTARTSYS;
|
}
|
}
|
}
|
}
|
|
|
if (sk->state != TCP_ESTABLISHED) {
|
if (sk->state != TCP_ESTABLISHED) {
|
/* Not in ABM, not in WAIT_UA -> failed */
|
/* Not in ABM, not in WAIT_UA -> failed */
|
sti();
|
sti();
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
return sock_error(sk); /* Always set at this point */
|
return sock_error(sk); /* Always set at this point */
|
}
|
}
|
|
|
sock->state = SS_CONNECTED;
|
sock->state = SS_CONNECTED;
|
|
|
sti();
|
sti();
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
|
|
static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
|
static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
|
{
|
{
|
struct sock *sk;
|
struct sock *sk;
|
struct sock *newsk;
|
struct sock *newsk;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
|
|
if (sock->state != SS_UNCONNECTED)
|
if (sock->state != SS_UNCONNECTED)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if ((sk = sock->sk) == NULL)
|
if ((sk = sock->sk) == NULL)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (sk->type != SOCK_SEQPACKET)
|
if (sk->type != SOCK_SEQPACKET)
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
|
|
if (sk->state != TCP_LISTEN)
|
if (sk->state != TCP_LISTEN)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
/*
|
/*
|
* The read queue this time is holding sockets ready to use
|
* The read queue this time is holding sockets ready to use
|
* hooked into the SABM we saved
|
* hooked into the SABM we saved
|
*/
|
*/
|
do {
|
do {
|
if ((skb = skb_dequeue(&sk->receive_queue)) == NULL) {
|
if ((skb = skb_dequeue(&sk->receive_queue)) == NULL) {
|
if (flags & O_NONBLOCK)
|
if (flags & O_NONBLOCK)
|
return -EWOULDBLOCK;
|
return -EWOULDBLOCK;
|
|
|
interruptible_sleep_on(sk->sleep);
|
interruptible_sleep_on(sk->sleep);
|
if (signal_pending(current))
|
if (signal_pending(current))
|
return -ERESTARTSYS;
|
return -ERESTARTSYS;
|
}
|
}
|
} while (skb == NULL);
|
} while (skb == NULL);
|
|
|
newsk = skb->sk;
|
newsk = skb->sk;
|
newsk->pair = NULL;
|
newsk->pair = NULL;
|
newsk->socket = newsock;
|
newsk->socket = newsock;
|
newsk->sleep = &newsock->wait;
|
newsk->sleep = &newsock->wait;
|
|
|
/* Now attach up the new socket */
|
/* Now attach up the new socket */
|
kfree_skb(skb);
|
kfree_skb(skb);
|
sk->ack_backlog--;
|
sk->ack_backlog--;
|
newsock->sk = newsk;
|
newsock->sk = newsk;
|
newsock->state = SS_CONNECTED;
|
newsock->state = SS_CONNECTED;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int ax25_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer)
|
static int ax25_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
|
unsigned char ndigi, i;
|
unsigned char ndigi, i;
|
|
|
if (peer != 0) {
|
if (peer != 0) {
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
|
|
fsa->fsa_ax25.sax25_family = AF_AX25;
|
fsa->fsa_ax25.sax25_family = AF_AX25;
|
fsa->fsa_ax25.sax25_call = sk->protinfo.ax25->dest_addr;
|
fsa->fsa_ax25.sax25_call = sk->protinfo.ax25->dest_addr;
|
fsa->fsa_ax25.sax25_ndigis = 0;
|
fsa->fsa_ax25.sax25_ndigis = 0;
|
|
|
if (sk->protinfo.ax25->digipeat != NULL) {
|
if (sk->protinfo.ax25->digipeat != NULL) {
|
ndigi = sk->protinfo.ax25->digipeat->ndigi;
|
ndigi = sk->protinfo.ax25->digipeat->ndigi;
|
fsa->fsa_ax25.sax25_ndigis = ndigi;
|
fsa->fsa_ax25.sax25_ndigis = ndigi;
|
for (i = 0; i < ndigi; i++)
|
for (i = 0; i < ndigi; i++)
|
fsa->fsa_digipeater[i] = sk->protinfo.ax25->digipeat->calls[i];
|
fsa->fsa_digipeater[i] = sk->protinfo.ax25->digipeat->calls[i];
|
}
|
}
|
} else {
|
} else {
|
fsa->fsa_ax25.sax25_family = AF_AX25;
|
fsa->fsa_ax25.sax25_family = AF_AX25;
|
fsa->fsa_ax25.sax25_call = sk->protinfo.ax25->source_addr;
|
fsa->fsa_ax25.sax25_call = sk->protinfo.ax25->source_addr;
|
fsa->fsa_ax25.sax25_ndigis = 1;
|
fsa->fsa_ax25.sax25_ndigis = 1;
|
if (sk->protinfo.ax25->ax25_dev != NULL) {
|
if (sk->protinfo.ax25->ax25_dev != NULL) {
|
memcpy(&fsa->fsa_digipeater[0], sk->protinfo.ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
|
memcpy(&fsa->fsa_digipeater[0], sk->protinfo.ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
|
} else {
|
} else {
|
fsa->fsa_digipeater[0] = null_ax25_address;
|
fsa->fsa_digipeater[0] = null_ax25_address;
|
}
|
}
|
}
|
}
|
*uaddr_len = sizeof (struct full_sockaddr_ax25);
|
*uaddr_len = sizeof (struct full_sockaddr_ax25);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
|
static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
|
struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
|
int err;
|
int err;
|
struct sockaddr_ax25 sax;
|
struct sockaddr_ax25 sax;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned char *asmptr;
|
unsigned char *asmptr;
|
int size;
|
int size;
|
ax25_digi *dp;
|
ax25_digi *dp;
|
ax25_digi dtmp;
|
ax25_digi dtmp;
|
int lv;
|
int lv;
|
int addr_len = msg->msg_namelen;
|
int addr_len = msg->msg_namelen;
|
|
|
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR))
|
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (sk->zapped)
|
if (sk->zapped)
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
|
|
if (sk->shutdown & SEND_SHUTDOWN) {
|
if (sk->shutdown & SEND_SHUTDOWN) {
|
send_sig(SIGPIPE, current, 0);
|
send_sig(SIGPIPE, current, 0);
|
return -EPIPE;
|
return -EPIPE;
|
}
|
}
|
|
|
if (sk->protinfo.ax25->ax25_dev == NULL)
|
if (sk->protinfo.ax25->ax25_dev == NULL)
|
return -ENETUNREACH;
|
return -ENETUNREACH;
|
|
|
if (usax != NULL) {
|
if (usax != NULL) {
|
if (usax->sax25_family != AF_AX25)
|
if (usax->sax25_family != AF_AX25)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (addr_len == sizeof(struct sockaddr_ax25)) {
|
if (addr_len == sizeof(struct sockaddr_ax25)) {
|
printk(KERN_WARNING "ax25_sendmsg(): %s uses obsolete socket structure\n",
|
printk(KERN_WARNING "ax25_sendmsg(): %s uses obsolete socket structure\n",
|
current->comm);
|
current->comm);
|
}
|
}
|
else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
|
else if (addr_len != sizeof(struct full_sockaddr_ax25)) {
|
/* support for old structure may go away some time */
|
/* support for old structure may go away some time */
|
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
|
if ((addr_len < sizeof(struct sockaddr_ax25) + sizeof(ax25_address) * 6) ||
|
(addr_len > sizeof(struct full_sockaddr_ax25)))
|
(addr_len > sizeof(struct full_sockaddr_ax25)))
|
return -EINVAL;
|
return -EINVAL;
|
|
|
printk(KERN_WARNING "ax25_sendmsg(): %s uses old (6 digipeater) socket structure.\n",
|
printk(KERN_WARNING "ax25_sendmsg(): %s uses old (6 digipeater) socket structure.\n",
|
current->comm);
|
current->comm);
|
}
|
}
|
|
|
if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
|
if (addr_len > sizeof(struct sockaddr_ax25) && usax->sax25_ndigis != 0) {
|
int ct = 0;
|
int ct = 0;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)usax;
|
|
|
/* Valid number of digipeaters ? */
|
/* Valid number of digipeaters ? */
|
if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS)
|
if (usax->sax25_ndigis < 1 || usax->sax25_ndigis > AX25_MAX_DIGIS)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
dtmp.ndigi = usax->sax25_ndigis;
|
dtmp.ndigi = usax->sax25_ndigis;
|
|
|
while (ct < usax->sax25_ndigis) {
|
while (ct < usax->sax25_ndigis) {
|
dtmp.repeated[ct] = 0;
|
dtmp.repeated[ct] = 0;
|
dtmp.calls[ct] = fsa->fsa_digipeater[ct];
|
dtmp.calls[ct] = fsa->fsa_digipeater[ct];
|
ct++;
|
ct++;
|
}
|
}
|
|
|
dtmp.lastrepeat = 0;
|
dtmp.lastrepeat = 0;
|
}
|
}
|
|
|
sax = *usax;
|
sax = *usax;
|
if (sk->type == SOCK_SEQPACKET && ax25cmp(&sk->protinfo.ax25->dest_addr, &sax.sax25_call) != 0)
|
if (sk->type == SOCK_SEQPACKET && ax25cmp(&sk->protinfo.ax25->dest_addr, &sax.sax25_call) != 0)
|
return -EISCONN;
|
return -EISCONN;
|
if (usax->sax25_ndigis == 0)
|
if (usax->sax25_ndigis == 0)
|
dp = NULL;
|
dp = NULL;
|
else
|
else
|
dp = &dtmp;
|
dp = &dtmp;
|
} else {
|
} else {
|
/*
|
/*
|
* FIXME: 1003.1g - if the socket is like this because
|
* FIXME: 1003.1g - if the socket is like this because
|
* it has become closed (not started closed) and is VC
|
* it has become closed (not started closed) and is VC
|
* we ought to SIGPIPE, EPIPE
|
* we ought to SIGPIPE, EPIPE
|
*/
|
*/
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
sax.sax25_family = AF_AX25;
|
sax.sax25_family = AF_AX25;
|
sax.sax25_call = sk->protinfo.ax25->dest_addr;
|
sax.sax25_call = sk->protinfo.ax25->dest_addr;
|
dp = sk->protinfo.ax25->digipeat;
|
dp = sk->protinfo.ax25->digipeat;
|
}
|
}
|
|
|
SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
|
SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n");
|
|
|
/* Build a packet */
|
/* Build a packet */
|
SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
|
SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
|
|
|
/* Assume the worst case */
|
/* Assume the worst case */
|
size = len + 3 + ax25_addr_size(dp) + AX25_BPQ_HEADER_LEN;
|
size = len + 3 + ax25_addr_size(dp) + AX25_BPQ_HEADER_LEN;
|
|
|
if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
|
if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
|
return err;
|
return err;
|
|
|
skb_reserve(skb, size - len);
|
skb_reserve(skb, size - len);
|
|
|
SOCK_DEBUG(sk, "AX.25: Appending user data\n");
|
SOCK_DEBUG(sk, "AX.25: Appending user data\n");
|
|
|
/* User data follows immediately after the AX.25 data */
|
/* User data follows immediately after the AX.25 data */
|
memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
|
memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
|
skb->nh.raw = skb->data;
|
skb->nh.raw = skb->data;
|
|
|
/* Add the PID if one is not supplied by the user in the skb */
|
/* Add the PID if one is not supplied by the user in the skb */
|
if (!sk->protinfo.ax25->pidincl) {
|
if (!sk->protinfo.ax25->pidincl) {
|
asmptr = skb_push(skb, 1);
|
asmptr = skb_push(skb, 1);
|
*asmptr = sk->protocol;
|
*asmptr = sk->protocol;
|
}
|
}
|
|
|
SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
|
SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
|
|
|
if (sk->type == SOCK_SEQPACKET) {
|
if (sk->type == SOCK_SEQPACKET) {
|
/* Connected mode sockets go via the LAPB machine */
|
/* Connected mode sockets go via the LAPB machine */
|
if (sk->state != TCP_ESTABLISHED) {
|
if (sk->state != TCP_ESTABLISHED) {
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return -ENOTCONN;
|
return -ENOTCONN;
|
}
|
}
|
|
|
ax25_output(sk->protinfo.ax25, sk->protinfo.ax25->paclen, skb); /* Shove it onto the queue and kick */
|
ax25_output(sk->protinfo.ax25, sk->protinfo.ax25->paclen, skb); /* Shove it onto the queue and kick */
|
|
|
return len;
|
return len;
|
} else {
|
} else {
|
asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
|
asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
|
|
|
SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
|
SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
|
|
|
if (dp != NULL)
|
if (dp != NULL)
|
SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
|
SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
|
|
|
/* Build an AX.25 header */
|
/* Build an AX.25 header */
|
asmptr += (lv = ax25_addr_build(asmptr, &sk->protinfo.ax25->source_addr, &sax.sax25_call, dp, AX25_COMMAND, AX25_MODULUS));
|
asmptr += (lv = ax25_addr_build(asmptr, &sk->protinfo.ax25->source_addr, &sax.sax25_call, dp, AX25_COMMAND, AX25_MODULUS));
|
|
|
SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
|
SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
|
|
|
skb->h.raw = asmptr;
|
skb->h.raw = asmptr;
|
|
|
SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, asmptr);
|
SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, asmptr);
|
|
|
*asmptr = AX25_UI;
|
*asmptr = AX25_UI;
|
|
|
/* Datagram frames go straight out of the door as UI */
|
/* Datagram frames go straight out of the door as UI */
|
skb->dev = sk->protinfo.ax25->ax25_dev->dev;
|
skb->dev = sk->protinfo.ax25->ax25_dev->dev;
|
|
|
ax25_queue_xmit(skb);
|
ax25_queue_xmit(skb);
|
|
|
return len;
|
return len;
|
}
|
}
|
}
|
}
|
|
|
static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags, struct scm_cookie *scm)
|
static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags, struct scm_cookie *scm)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
int copied;
|
int copied;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
int er;
|
int er;
|
|
|
/*
|
/*
|
* This works for seqpacket too. The receiver has ordered the
|
* This works for seqpacket too. The receiver has ordered the
|
* queue for us! We do one quick check first though
|
* queue for us! We do one quick check first though
|
*/
|
*/
|
if (sk->type == SOCK_SEQPACKET && sk->state != TCP_ESTABLISHED)
|
if (sk->type == SOCK_SEQPACKET && sk->state != TCP_ESTABLISHED)
|
return -ENOTCONN;
|
return -ENOTCONN;
|
|
|
/* Now we can treat all alike */
|
/* Now we can treat all alike */
|
if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
|
if ((skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &er)) == NULL)
|
return er;
|
return er;
|
|
|
if (!sk->protinfo.ax25->pidincl)
|
if (!sk->protinfo.ax25->pidincl)
|
skb_pull(skb, 1); /* Remove PID */
|
skb_pull(skb, 1); /* Remove PID */
|
|
|
skb->h.raw = skb->data;
|
skb->h.raw = skb->data;
|
copied = skb->len;
|
copied = skb->len;
|
|
|
if (copied > size) {
|
if (copied > size) {
|
copied = size;
|
copied = size;
|
msg->msg_flags |= MSG_TRUNC;
|
msg->msg_flags |= MSG_TRUNC;
|
}
|
}
|
|
|
skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
|
|
|
if (msg->msg_namelen != 0) {
|
if (msg->msg_namelen != 0) {
|
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
|
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
|
ax25_digi digi;
|
ax25_digi digi;
|
ax25_address dest;
|
ax25_address dest;
|
|
|
ax25_addr_parse(skb->mac.raw+1, skb->data-skb->mac.raw-1, NULL, &dest, &digi, NULL, NULL);
|
ax25_addr_parse(skb->mac.raw+1, skb->data-skb->mac.raw-1, NULL, &dest, &digi, NULL, NULL);
|
|
|
sax->sax25_family = AF_AX25;
|
sax->sax25_family = AF_AX25;
|
/* We set this correctly, even though we may not let the
|
/* We set this correctly, even though we may not let the
|
application know the digi calls further down (because it
|
application know the digi calls further down (because it
|
did NOT ask to know them). This could get political... **/
|
did NOT ask to know them). This could get political... **/
|
sax->sax25_ndigis = digi.ndigi;
|
sax->sax25_ndigis = digi.ndigi;
|
sax->sax25_call = dest;
|
sax->sax25_call = dest;
|
|
|
if (sax->sax25_ndigis != 0) {
|
if (sax->sax25_ndigis != 0) {
|
int ct;
|
int ct;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
|
struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)sax;
|
|
|
for (ct = 0; ct < digi.ndigi; ct++)
|
for (ct = 0; ct < digi.ndigi; ct++)
|
fsa->fsa_digipeater[ct] = digi.calls[ct];
|
fsa->fsa_digipeater[ct] = digi.calls[ct];
|
}
|
}
|
msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
|
msg->msg_namelen = sizeof(struct full_sockaddr_ax25);
|
}
|
}
|
|
|
skb_free_datagram(sk, skb);
|
skb_free_datagram(sk, skb);
|
|
|
return copied;
|
return copied;
|
}
|
}
|
|
|
static int ax25_shutdown(struct socket *sk, int how)
|
static int ax25_shutdown(struct socket *sk, int how)
|
{
|
{
|
/* FIXME - generate DM and RNR states */
|
/* FIXME - generate DM and RNR states */
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
}
|
}
|
|
|
static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
switch (cmd) {
|
switch (cmd) {
|
case TIOCOUTQ: {
|
case TIOCOUTQ: {
|
long amount;
|
long amount;
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
if (amount < 0)
|
if (amount < 0)
|
amount = 0;
|
amount = 0;
|
return put_user(amount, (int *)arg);
|
return put_user(amount, (int *)arg);
|
}
|
}
|
|
|
case TIOCINQ: {
|
case TIOCINQ: {
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
long amount = 0L;
|
long amount = 0L;
|
/* These two are safe on a single CPU system as only user tasks fiddle here */
|
/* These two are safe on a single CPU system as only user tasks fiddle here */
|
if ((skb = skb_peek(&sk->receive_queue)) != NULL)
|
if ((skb = skb_peek(&sk->receive_queue)) != NULL)
|
amount = skb->len;
|
amount = skb->len;
|
return put_user(amount, (int *)arg);
|
return put_user(amount, (int *)arg);
|
}
|
}
|
|
|
case SIOCGSTAMP:
|
case SIOCGSTAMP:
|
if (sk != NULL) {
|
if (sk != NULL) {
|
if (sk->stamp.tv_sec == 0)
|
if (sk->stamp.tv_sec == 0)
|
return -ENOENT;
|
return -ENOENT;
|
return copy_to_user((void *)arg, &sk->stamp, sizeof(struct timeval)) ? -EFAULT : 0;
|
return copy_to_user((void *)arg, &sk->stamp, sizeof(struct timeval)) ? -EFAULT : 0;
|
}
|
}
|
return -EINVAL;
|
return -EINVAL;
|
|
|
case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
|
case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
|
case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
|
case SIOCAX25DELUID: /* Delete a uid from the uid/call map table */
|
case SIOCAX25GETUID: {
|
case SIOCAX25GETUID: {
|
struct sockaddr_ax25 sax25;
|
struct sockaddr_ax25 sax25;
|
if (copy_from_user(&sax25, (void *)arg, sizeof(sax25)))
|
if (copy_from_user(&sax25, (void *)arg, sizeof(sax25)))
|
return -EFAULT;
|
return -EFAULT;
|
return ax25_uid_ioctl(cmd, &sax25);
|
return ax25_uid_ioctl(cmd, &sax25);
|
}
|
}
|
|
|
case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
|
case SIOCAX25NOUID: { /* Set the default policy (default/bar) */
|
long amount;
|
long amount;
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
if (get_user(amount, (long *)arg))
|
if (get_user(amount, (long *)arg))
|
return -EFAULT;
|
return -EFAULT;
|
if (amount > AX25_NOUID_BLOCK)
|
if (amount > AX25_NOUID_BLOCK)
|
return -EINVAL;
|
return -EINVAL;
|
ax25_uid_policy = amount;
|
ax25_uid_policy = amount;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
case SIOCADDRT:
|
case SIOCADDRT:
|
case SIOCDELRT:
|
case SIOCDELRT:
|
case SIOCAX25OPTRT:
|
case SIOCAX25OPTRT:
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
return ax25_rt_ioctl(cmd, (void *)arg);
|
return ax25_rt_ioctl(cmd, (void *)arg);
|
|
|
case SIOCAX25CTLCON:
|
case SIOCAX25CTLCON:
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
return ax25_ctl_ioctl(cmd, (void *)arg);
|
return ax25_ctl_ioctl(cmd, (void *)arg);
|
|
|
case SIOCAX25GETINFO:
|
case SIOCAX25GETINFO:
|
case SIOCAX25GETINFOOLD: {
|
case SIOCAX25GETINFOOLD: {
|
struct ax25_info_struct ax25_info;
|
struct ax25_info_struct ax25_info;
|
|
|
ax25_info.t1 = sk->protinfo.ax25->t1 / HZ;
|
ax25_info.t1 = sk->protinfo.ax25->t1 / HZ;
|
ax25_info.t2 = sk->protinfo.ax25->t2 / HZ;
|
ax25_info.t2 = sk->protinfo.ax25->t2 / HZ;
|
ax25_info.t3 = sk->protinfo.ax25->t3 / HZ;
|
ax25_info.t3 = sk->protinfo.ax25->t3 / HZ;
|
ax25_info.idle = sk->protinfo.ax25->idle / (60 * HZ);
|
ax25_info.idle = sk->protinfo.ax25->idle / (60 * HZ);
|
ax25_info.n2 = sk->protinfo.ax25->n2;
|
ax25_info.n2 = sk->protinfo.ax25->n2;
|
ax25_info.t1timer = ax25_display_timer(&sk->protinfo.ax25->t1timer) / HZ;
|
ax25_info.t1timer = ax25_display_timer(&sk->protinfo.ax25->t1timer) / HZ;
|
ax25_info.t2timer = ax25_display_timer(&sk->protinfo.ax25->t2timer) / HZ;
|
ax25_info.t2timer = ax25_display_timer(&sk->protinfo.ax25->t2timer) / HZ;
|
ax25_info.t3timer = ax25_display_timer(&sk->protinfo.ax25->t3timer) / HZ;
|
ax25_info.t3timer = ax25_display_timer(&sk->protinfo.ax25->t3timer) / HZ;
|
ax25_info.idletimer = ax25_display_timer(&sk->protinfo.ax25->idletimer) / (60 * HZ);
|
ax25_info.idletimer = ax25_display_timer(&sk->protinfo.ax25->idletimer) / (60 * HZ);
|
ax25_info.n2count = sk->protinfo.ax25->n2count;
|
ax25_info.n2count = sk->protinfo.ax25->n2count;
|
ax25_info.state = sk->protinfo.ax25->state;
|
ax25_info.state = sk->protinfo.ax25->state;
|
ax25_info.rcv_q = atomic_read(&sk->rmem_alloc);
|
ax25_info.rcv_q = atomic_read(&sk->rmem_alloc);
|
ax25_info.snd_q = atomic_read(&sk->wmem_alloc);
|
ax25_info.snd_q = atomic_read(&sk->wmem_alloc);
|
ax25_info.vs = sk->protinfo.ax25->vs;
|
ax25_info.vs = sk->protinfo.ax25->vs;
|
ax25_info.vr = sk->protinfo.ax25->vr;
|
ax25_info.vr = sk->protinfo.ax25->vr;
|
ax25_info.va = sk->protinfo.ax25->va;
|
ax25_info.va = sk->protinfo.ax25->va;
|
ax25_info.vs_max = sk->protinfo.ax25->vs; /* reserved */
|
ax25_info.vs_max = sk->protinfo.ax25->vs; /* reserved */
|
ax25_info.paclen = sk->protinfo.ax25->paclen;
|
ax25_info.paclen = sk->protinfo.ax25->paclen;
|
ax25_info.window = sk->protinfo.ax25->window;
|
ax25_info.window = sk->protinfo.ax25->window;
|
|
|
/* old structure? */
|
/* old structure? */
|
if (cmd == SIOCAX25GETINFOOLD) {
|
if (cmd == SIOCAX25GETINFOOLD) {
|
static int warned = 0;
|
static int warned = 0;
|
if (!warned) {
|
if (!warned) {
|
printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
|
printk(KERN_INFO "%s uses old SIOCAX25GETINFO\n",
|
current->comm);
|
current->comm);
|
warned=1;
|
warned=1;
|
}
|
}
|
|
|
if (copy_to_user((void *)arg, &ax25_info, sizeof(struct ax25_info_struct_depreciated)))
|
if (copy_to_user((void *)arg, &ax25_info, sizeof(struct ax25_info_struct_depreciated)))
|
return -EFAULT;
|
return -EFAULT;
|
} else {
|
} else {
|
if (copy_to_user((void *)arg, &ax25_info, sizeof(struct ax25_info_struct)))
|
if (copy_to_user((void *)arg, &ax25_info, sizeof(struct ax25_info_struct)))
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
case SIOCAX25ADDFWD:
|
case SIOCAX25ADDFWD:
|
case SIOCAX25DELFWD: {
|
case SIOCAX25DELFWD: {
|
struct ax25_fwd_struct ax25_fwd;
|
struct ax25_fwd_struct ax25_fwd;
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
if (copy_from_user(&ax25_fwd, (void *)arg, sizeof(ax25_fwd)))
|
if (copy_from_user(&ax25_fwd, (void *)arg, sizeof(ax25_fwd)))
|
return -EFAULT;
|
return -EFAULT;
|
return ax25_fwd_ioctl(cmd, &ax25_fwd);
|
return ax25_fwd_ioctl(cmd, &ax25_fwd);
|
}
|
}
|
|
|
case SIOCGIFADDR:
|
case SIOCGIFADDR:
|
case SIOCSIFADDR:
|
case SIOCSIFADDR:
|
case SIOCGIFDSTADDR:
|
case SIOCGIFDSTADDR:
|
case SIOCSIFDSTADDR:
|
case SIOCSIFDSTADDR:
|
case SIOCGIFBRDADDR:
|
case SIOCGIFBRDADDR:
|
case SIOCSIFBRDADDR:
|
case SIOCSIFBRDADDR:
|
case SIOCGIFNETMASK:
|
case SIOCGIFNETMASK:
|
case SIOCSIFNETMASK:
|
case SIOCSIFNETMASK:
|
case SIOCGIFMETRIC:
|
case SIOCGIFMETRIC:
|
case SIOCSIFMETRIC:
|
case SIOCSIFMETRIC:
|
return -EINVAL;
|
return -EINVAL;
|
|
|
default:
|
default:
|
return dev_ioctl(cmd, (void *)arg);
|
return dev_ioctl(cmd, (void *)arg);
|
}
|
}
|
|
|
/*NOTREACHED*/
|
/*NOTREACHED*/
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int ax25_get_info(char *buffer, char **start, off_t offset, int length)
|
static int ax25_get_info(char *buffer, char **start, off_t offset, int length)
|
{
|
{
|
ax25_cb *ax25;
|
ax25_cb *ax25;
|
int k;
|
int k;
|
int len = 0;
|
int len = 0;
|
off_t pos = 0;
|
off_t pos = 0;
|
off_t begin = 0;
|
off_t begin = 0;
|
|
|
cli();
|
cli();
|
|
|
/*
|
/*
|
* New format:
|
* New format:
|
* magic dev src_addr dest_addr,digi1,digi2,.. st vs vr va t1 t1 t2 t2 t3 t3 idle idle n2 n2 rtt window paclen Snd-Q Rcv-Q inode
|
* magic dev src_addr dest_addr,digi1,digi2,.. st vs vr va t1 t1 t2 t2 t3 t3 idle idle n2 n2 rtt window paclen Snd-Q Rcv-Q inode
|
*/
|
*/
|
|
|
for (ax25 = ax25_list; ax25 != NULL; ax25 = ax25->next) {
|
for (ax25 = ax25_list; ax25 != NULL; ax25 = ax25->next) {
|
len += sprintf(buffer+len, "%8.8lx %s %s%s ",
|
len += sprintf(buffer+len, "%8.8lx %s %s%s ",
|
(long) ax25,
|
(long) ax25,
|
ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
|
ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
|
ax2asc(&ax25->source_addr),
|
ax2asc(&ax25->source_addr),
|
ax25->iamdigi? "*":"");
|
ax25->iamdigi? "*":"");
|
|
|
len += sprintf(buffer+len, "%s", ax2asc(&ax25->dest_addr));
|
len += sprintf(buffer+len, "%s", ax2asc(&ax25->dest_addr));
|
|
|
for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
|
for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
|
len += sprintf(buffer+len, ",%s%s",
|
len += sprintf(buffer+len, ",%s%s",
|
ax2asc(&ax25->digipeat->calls[k]),
|
ax2asc(&ax25->digipeat->calls[k]),
|
ax25->digipeat->repeated[k]? "*":"");
|
ax25->digipeat->repeated[k]? "*":"");
|
}
|
}
|
|
|
len += sprintf(buffer+len, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
|
len += sprintf(buffer+len, " %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %d %d",
|
ax25->state,
|
ax25->state,
|
ax25->vs, ax25->vr, ax25->va,
|
ax25->vs, ax25->vr, ax25->va,
|
ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
|
ax25_display_timer(&ax25->t1timer) / HZ, ax25->t1 / HZ,
|
ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
|
ax25_display_timer(&ax25->t2timer) / HZ, ax25->t2 / HZ,
|
ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
|
ax25_display_timer(&ax25->t3timer) / HZ, ax25->t3 / HZ,
|
ax25_display_timer(&ax25->idletimer) / (60 * HZ),
|
ax25_display_timer(&ax25->idletimer) / (60 * HZ),
|
ax25->idle / (60 * HZ),
|
ax25->idle / (60 * HZ),
|
ax25->n2count, ax25->n2,
|
ax25->n2count, ax25->n2,
|
ax25->rtt / HZ,
|
ax25->rtt / HZ,
|
ax25->window,
|
ax25->window,
|
ax25->paclen);
|
ax25->paclen);
|
|
|
if (ax25->sk != NULL) {
|
if (ax25->sk != NULL) {
|
len += sprintf(buffer + len, " %d %d %ld\n",
|
len += sprintf(buffer + len, " %d %d %ld\n",
|
atomic_read(&ax25->sk->wmem_alloc),
|
atomic_read(&ax25->sk->wmem_alloc),
|
atomic_read(&ax25->sk->rmem_alloc),
|
atomic_read(&ax25->sk->rmem_alloc),
|
ax25->sk->socket != NULL ? ax25->sk->socket->inode->i_ino : 0L);
|
ax25->sk->socket != NULL ? ax25->sk->socket->inode->i_ino : 0L);
|
} else {
|
} else {
|
len += sprintf(buffer + len, " * * *\n");
|
len += sprintf(buffer + len, " * * *\n");
|
}
|
}
|
|
|
pos = begin + len;
|
pos = begin + len;
|
|
|
if (pos < offset) {
|
if (pos < offset) {
|
len = 0;
|
len = 0;
|
begin = pos;
|
begin = pos;
|
}
|
}
|
|
|
if (pos > offset + length)
|
if (pos > offset + length)
|
break;
|
break;
|
}
|
}
|
|
|
sti();
|
sti();
|
|
|
*start = buffer + (offset - begin);
|
*start = buffer + (offset - begin);
|
len -= (offset - begin);
|
len -= (offset - begin);
|
|
|
if (len > length) len = length;
|
if (len > length) len = length;
|
|
|
return(len);
|
return(len);
|
}
|
}
|
|
|
static struct net_proto_family ax25_family_ops = {
|
static struct net_proto_family ax25_family_ops = {
|
family: PF_AX25,
|
family: PF_AX25,
|
create: ax25_create,
|
create: ax25_create,
|
};
|
};
|
|
|
static struct proto_ops SOCKOPS_WRAPPED(ax25_proto_ops) = {
|
static struct proto_ops SOCKOPS_WRAPPED(ax25_proto_ops) = {
|
family: PF_AX25,
|
family: PF_AX25,
|
|
|
release: ax25_release,
|
release: ax25_release,
|
bind: ax25_bind,
|
bind: ax25_bind,
|
connect: ax25_connect,
|
connect: ax25_connect,
|
socketpair: sock_no_socketpair,
|
socketpair: sock_no_socketpair,
|
accept: ax25_accept,
|
accept: ax25_accept,
|
getname: ax25_getname,
|
getname: ax25_getname,
|
poll: datagram_poll,
|
poll: datagram_poll,
|
ioctl: ax25_ioctl,
|
ioctl: ax25_ioctl,
|
listen: ax25_listen,
|
listen: ax25_listen,
|
shutdown: ax25_shutdown,
|
shutdown: ax25_shutdown,
|
setsockopt: ax25_setsockopt,
|
setsockopt: ax25_setsockopt,
|
getsockopt: ax25_getsockopt,
|
getsockopt: ax25_getsockopt,
|
sendmsg: ax25_sendmsg,
|
sendmsg: ax25_sendmsg,
|
recvmsg: ax25_recvmsg,
|
recvmsg: ax25_recvmsg,
|
mmap: sock_no_mmap,
|
mmap: sock_no_mmap,
|
sendpage: sock_no_sendpage,
|
sendpage: sock_no_sendpage,
|
};
|
};
|
|
|
#include <linux/smp_lock.h>
|
#include <linux/smp_lock.h>
|
SOCKOPS_WRAP(ax25_proto, PF_AX25);
|
SOCKOPS_WRAP(ax25_proto, PF_AX25);
|
|
|
/*
|
/*
|
* Called by socket.c on kernel start up
|
* Called by socket.c on kernel start up
|
*/
|
*/
|
static struct packet_type ax25_packet_type = {
|
static struct packet_type ax25_packet_type = {
|
type: __constant_htons(ETH_P_AX25),
|
type: __constant_htons(ETH_P_AX25),
|
func: ax25_kiss_rcv,
|
func: ax25_kiss_rcv,
|
};
|
};
|
|
|
static struct notifier_block ax25_dev_notifier = {
|
static struct notifier_block ax25_dev_notifier = {
|
notifier_call: ax25_device_event,
|
notifier_call: ax25_device_event,
|
};
|
};
|
|
|
EXPORT_SYMBOL(ax25_encapsulate);
|
EXPORT_SYMBOL(ax25_encapsulate);
|
EXPORT_SYMBOL(ax25_rebuild_header);
|
EXPORT_SYMBOL(ax25_rebuild_header);
|
EXPORT_SYMBOL(ax25_findbyuid);
|
EXPORT_SYMBOL(ax25_findbyuid);
|
EXPORT_SYMBOL(ax25_find_cb);
|
EXPORT_SYMBOL(ax25_find_cb);
|
EXPORT_SYMBOL(ax25_linkfail_register);
|
EXPORT_SYMBOL(ax25_linkfail_register);
|
EXPORT_SYMBOL(ax25_linkfail_release);
|
EXPORT_SYMBOL(ax25_linkfail_release);
|
EXPORT_SYMBOL(ax25_listen_register);
|
EXPORT_SYMBOL(ax25_listen_register);
|
EXPORT_SYMBOL(ax25_listen_release);
|
EXPORT_SYMBOL(ax25_listen_release);
|
EXPORT_SYMBOL(ax25_protocol_register);
|
EXPORT_SYMBOL(ax25_protocol_register);
|
EXPORT_SYMBOL(ax25_protocol_release);
|
EXPORT_SYMBOL(ax25_protocol_release);
|
EXPORT_SYMBOL(ax25_send_frame);
|
EXPORT_SYMBOL(ax25_send_frame);
|
EXPORT_SYMBOL(ax25_uid_policy);
|
EXPORT_SYMBOL(ax25_uid_policy);
|
EXPORT_SYMBOL(ax25cmp);
|
EXPORT_SYMBOL(ax25cmp);
|
EXPORT_SYMBOL(ax2asc);
|
EXPORT_SYMBOL(ax2asc);
|
EXPORT_SYMBOL(asc2ax);
|
EXPORT_SYMBOL(asc2ax);
|
EXPORT_SYMBOL(null_ax25_address);
|
EXPORT_SYMBOL(null_ax25_address);
|
EXPORT_SYMBOL(ax25_display_timer);
|
EXPORT_SYMBOL(ax25_display_timer);
|
|
|
static char banner[] __initdata = KERN_INFO "NET4: G4KLX/GW4PTS AX.25 for Linux. Version 0.37 for Linux NET4.0\n";
|
static char banner[] __initdata = KERN_INFO "NET4: G4KLX/GW4PTS AX.25 for Linux. Version 0.37 for Linux NET4.0\n";
|
|
|
static int __init ax25_init(void)
|
static int __init ax25_init(void)
|
{
|
{
|
sock_register(&ax25_family_ops);
|
sock_register(&ax25_family_ops);
|
dev_add_pack(&ax25_packet_type);
|
dev_add_pack(&ax25_packet_type);
|
register_netdevice_notifier(&ax25_dev_notifier);
|
register_netdevice_notifier(&ax25_dev_notifier);
|
ax25_register_sysctl();
|
ax25_register_sysctl();
|
|
|
proc_net_create("ax25_route", 0, ax25_rt_get_info);
|
proc_net_create("ax25_route", 0, ax25_rt_get_info);
|
proc_net_create("ax25", 0, ax25_get_info);
|
proc_net_create("ax25", 0, ax25_get_info);
|
proc_net_create("ax25_calls", 0, ax25_uid_get_info);
|
proc_net_create("ax25_calls", 0, ax25_uid_get_info);
|
|
|
printk(banner);
|
printk(banner);
|
return 0;
|
return 0;
|
}
|
}
|
module_init(ax25_init);
|
module_init(ax25_init);
|
|
|
|
|
MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
|
MODULE_AUTHOR("Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>");
|
MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
|
MODULE_DESCRIPTION("The amateur radio AX.25 link layer protocol");
|
MODULE_LICENSE("GPL");
|
MODULE_LICENSE("GPL");
|
|
|
static void __exit ax25_exit(void)
|
static void __exit ax25_exit(void)
|
{
|
{
|
proc_net_remove("ax25_route");
|
proc_net_remove("ax25_route");
|
proc_net_remove("ax25");
|
proc_net_remove("ax25");
|
proc_net_remove("ax25_calls");
|
proc_net_remove("ax25_calls");
|
ax25_rt_free();
|
ax25_rt_free();
|
ax25_uid_free();
|
ax25_uid_free();
|
ax25_dev_free();
|
ax25_dev_free();
|
|
|
ax25_unregister_sysctl();
|
ax25_unregister_sysctl();
|
unregister_netdevice_notifier(&ax25_dev_notifier);
|
unregister_netdevice_notifier(&ax25_dev_notifier);
|
|
|
dev_remove_pack(&ax25_packet_type);
|
dev_remove_pack(&ax25_packet_type);
|
|
|
sock_unregister(PF_AX25);
|
sock_unregister(PF_AX25);
|
}
|
}
|
module_exit(ax25_exit);
|
module_exit(ax25_exit);
|
|
|
