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Diffstat (limited to 'Documentation/networking/generic-hdlc.txt')
| -rw-r--r-- | Documentation/networking/generic-hdlc.txt | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/Documentation/networking/generic-hdlc.txt b/Documentation/networking/generic-hdlc.txt deleted file mode 100644 index 4eb3cc40b702..000000000000 --- a/Documentation/networking/generic-hdlc.txt +++ /dev/null @@ -1,132 +0,0 @@ -Generic HDLC layer -Krzysztof Halasa <khc@pm.waw.pl> - - -Generic HDLC layer currently supports: -1. Frame Relay (ANSI, CCITT, Cisco and no LMI) - - Normal (routed) and Ethernet-bridged (Ethernet device emulation) - interfaces can share a single PVC. - - ARP support (no InARP support in the kernel - there is an - experimental InARP user-space daemon available on: - http://www.kernel.org/pub/linux/utils/net/hdlc/). -2. raw HDLC - either IP (IPv4) interface or Ethernet device emulation -3. Cisco HDLC -4. PPP -5. X.25 (uses X.25 routines). - -Generic HDLC is a protocol driver only - it needs a low-level driver -for your particular hardware. - -Ethernet device emulation (using HDLC or Frame-Relay PVC) is compatible -with IEEE 802.1Q (VLANs) and 802.1D (Ethernet bridging). - - -Make sure the hdlc.o and the hardware driver are loaded. It should -create a number of "hdlc" (hdlc0 etc) network devices, one for each -WAN port. You'll need the "sethdlc" utility, get it from: - http://www.kernel.org/pub/linux/utils/net/hdlc/ - -Compile sethdlc.c utility: - gcc -O2 -Wall -o sethdlc sethdlc.c -Make sure you're using a correct version of sethdlc for your kernel. - -Use sethdlc to set physical interface, clock rate, HDLC mode used, -and add any required PVCs if using Frame Relay. -Usually you want something like: - - sethdlc hdlc0 clock int rate 128000 - sethdlc hdlc0 cisco interval 10 timeout 25 -or - sethdlc hdlc0 rs232 clock ext - sethdlc hdlc0 fr lmi ansi - sethdlc hdlc0 create 99 - ifconfig hdlc0 up - ifconfig pvc0 localIP pointopoint remoteIP - -In Frame Relay mode, ifconfig master hdlc device up (without assigning -any IP address to it) before using pvc devices. - - -Setting interface: - -* v35 | rs232 | x21 | t1 | e1 - sets physical interface for a given port - if the card has software-selectable interfaces - loopback - activate hardware loopback (for testing only) -* clock ext - both RX clock and TX clock external -* clock int - both RX clock and TX clock internal -* clock txint - RX clock external, TX clock internal -* clock txfromrx - RX clock external, TX clock derived from RX clock -* rate - sets clock rate in bps (for "int" or "txint" clock only) - - -Setting protocol: - -* hdlc - sets raw HDLC (IP-only) mode - nrz / nrzi / fm-mark / fm-space / manchester - sets transmission code - no-parity / crc16 / crc16-pr0 (CRC16 with preset zeros) / crc32-itu - crc16-itu (CRC16 with ITU-T polynomial) / crc16-itu-pr0 - sets parity - -* hdlc-eth - Ethernet device emulation using HDLC. Parity and encoding - as above. - -* cisco - sets Cisco HDLC mode (IP, IPv6 and IPX supported) - interval - time in seconds between keepalive packets - timeout - time in seconds after last received keepalive packet before - we assume the link is down - -* ppp - sets synchronous PPP mode - -* x25 - sets X.25 mode - -* fr - Frame Relay mode - lmi ansi / ccitt / cisco / none - LMI (link management) type - dce - Frame Relay DCE (network) side LMI instead of default DTE (user). - It has nothing to do with clocks! - t391 - link integrity verification polling timer (in seconds) - user - t392 - polling verification timer (in seconds) - network - n391 - full status polling counter - user - n392 - error threshold - both user and network - n393 - monitored events count - both user and network - -Frame-Relay only: -* create n | delete n - adds / deletes PVC interface with DLCI #n. - Newly created interface will be named pvc0, pvc1 etc. - -* create ether n | delete ether n - adds a device for Ethernet-bridged - frames. The device will be named pvceth0, pvceth1 etc. - - - - -Board-specific issues ---------------------- - -n2.o and c101.o need parameters to work: - - insmod n2 hw=io,irq,ram,ports[:io,irq,...] -example: - insmod n2 hw=0x300,10,0xD0000,01 - -or - insmod c101 hw=irq,ram[:irq,...] -example: - insmod c101 hw=9,0xdc000 - -If built into the kernel, these drivers need kernel (command line) parameters: - n2.hw=io,irq,ram,ports:... -or - c101.hw=irq,ram:... - - - -If you have a problem with N2, C101 or PLX200SYN card, you can issue the -"private" command to see port's packet descriptor rings (in kernel logs): - - sethdlc hdlc0 private - -The hardware driver has to be build with #define DEBUG_RINGS. -Attaching this info to bug reports would be helpful. Anyway, let me know -if you have problems using this. - -For patches and other info look at: -<http://www.kernel.org/pub/linux/utils/net/hdlc/>. |