3267 lines
91 KiB
C
3267 lines
91 KiB
C
/*****************************************************************************
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* sdla_asyhdlc.c WANPIPE(tm) Multiprotocol WAN Link Driver. Cisco HDLC module.
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*
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* Authors: Nenad Corbic <ncorbic@sangoma.com>
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* Gideon Hack
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*
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* Copyright: (c) 1995-2004 Sangoma Technologies Inc.
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*
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* This program 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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* 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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* ============================================================================
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* Jan 03, 2002 Nenad Corbic Memory leak bug fix under Bridge Mode.
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* If not an ethernet frame skb buffer was
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* not deallocated.
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* Oct 18, 2002 Nenad Corbic Added BRIDGE support
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* Jan 14, 2002 Nenad Corbic Removed the 2.0.X kernel support and added
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* front end state handling.
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* Dec 12, 2001 Nenad Corbic Re-wrote the tty receive algorithm, using
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* task queues, because ISA cards cannot call
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* receive_buf() from the rx interrupt.
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* Dec 03, 2001 Gideon Hack Updated for S514-5 56K adapter.
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* Sep 20, 2001 Nenad Corbic The min() function has changed for 2.4.9
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* kernel. Thus using the wp_min() defined in
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* wanpipe.h
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* Sept 6, 2001 Alex Feldman Add SNMP support.
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* Aug 23, 2001 Nenad Corbic Removed the if_header and set the hard_header
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* length to zero. Caused problems with Checkpoint
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* firewall.
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* May 13, 2001 Alex Feldman Added T1/E1 support (TE1).
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* Feb 28, 2001 Nenad Corbic Updated if_tx_timeout() routine for
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* 2.4.X kernels.
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* Jan 25, 2001 Nenad Corbic Added a TTY Sync serial driver over the
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* HDLC streaming protocol
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* Added a TTY Async serial driver over the
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* Async protocol.
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* Dec 15, 2000 Nenad Corbic Updated for 2.4.X Kernel support
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* Nov 13, 2000 Nenad Corbic Added true interface type encoding option.
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* Tcpdump doesn't support CHDLC inteface
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* types, to fix this "true type" option will set
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* the interface type to RAW IP mode.
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* Nov 07, 2000 Nenad Corbic Added security features for UDP debugging:
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* Deny all and specify allowed requests.
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* Jun 20, 2000 Nenad Corbic Fixed the API IP ERROR bug. Caused by the
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* latest update.
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* May 09, 2000 Nenad Corbic Option to bring down an interface
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* upon disconnect.
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* Mar 23, 2000 Nenad Corbic Improved task queue, bh handling.
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* Mar 16, 2000 Nenad Corbic Fixed the SLARP Dynamic IP addressing.
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* Mar 06, 2000 Nenad Corbic Bug Fix: corrupted mbox recovery.
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* Feb 10, 2000 Gideon Hack Added ASYNC support.
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* Feb 09, 2000 Nenad Corbic Fixed two shutdown bugs in update() and
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* if_stats() functions.
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* Jan 24, 2000 Nenad Corbic Fixed a startup wanpipe state racing,
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* condition between if_open and isr.
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* Jan 10, 2000 Nenad Corbic Added new socket API support.
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* Dev 15, 1999 Nenad Corbic Fixed up header files for 2.0.X kernels
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* Nov 20, 1999 Nenad Corbic Fixed zero length API bug.
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* Sep 30, 1999 Nenad Corbic Fixed dynamic IP and route setup.
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* Sep 23, 1999 Nenad Corbic Added SMP support, fixed tracing
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* Sep 13, 1999 Nenad Corbic Split up Port 0 and 1 into separate devices.
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* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
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* Oct 30, 1998 Jaspreet Singh Added Support for CHDLC API (HDLC STREAMING).
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* Oct 28, 1998 Jaspreet Singh Added Support for Dual Port CHDLC.
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* Aug 07, 1998 David Fong Initial version.
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*****************************************************************************/
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#include <linux/wanpipe_includes.h>
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#include <linux/wanpipe_defines.h>
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#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
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#include <linux/wanpipe_abstr.h>
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#include <linux/wanproc.h>
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#include <linux/sdla_asyhdlc.h> /* CHDLC firmware API definitions */
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#include <linux/if_wanpipe_common.h> /* Socket Driver common area */
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#include <linux/if_wanpipe.h>
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/****** Defines & Macros ****************************************************/
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/* Private critical flags */
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enum {
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POLL_CRIT = PRIV_CRIT,
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TX_INTR,
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TASK_POLL,
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TTY_HANGUP
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};
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/* reasons for enabling the timer interrupt on the adapter */
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#define TMR_INT_ENABLED_UDP 0x01
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#define TMR_INT_ENABLED_UPDATE 0x02
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#define TMR_INT_ENABLED_CONFIG 0x10
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#define TMR_INT_ENABLED_TE 0x20
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#define MAX_IP_ERRORS 10
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#define TTY_CHDLC_MAX_MTU 2000
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#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
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#define CHDLC_HDR_LEN 1
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#define CHDLC_API 0x01
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#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
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#define MAX_BH_BUFF 10
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/******Data Structures*****************************************************/
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/* This structure is placed in the private data area of the device structure.
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* The card structure used to occupy the private area but now the following
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* structure will incorporate the card structure along with CHDLC specific data
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*/
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typedef struct chdlc_private_area
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{
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wanpipe_common_t common;
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sdla_t *card;
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int TracingEnabled; /* For enabling Tracing */
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unsigned long curr_trace_addr; /* Used for Tracing */
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unsigned long start_trace_addr;
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unsigned long end_trace_addr;
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unsigned long base_addr_trace_buffer;
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unsigned long end_addr_trace_buffer;
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unsigned short number_trace_elements;
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unsigned available_buffer_space;
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unsigned long router_start_time;
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unsigned char route_status;
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unsigned char route_removed;
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unsigned long tick_counter; /* For 5s timeout counter */
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unsigned long router_up_time;
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u32 IP_address; /* IP addressing */
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u32 IP_netmask;
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u32 ip_local;
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u32 ip_remote;
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u32 ip_local_tmp;
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u32 ip_remote_tmp;
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u8 ip_error;
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unsigned long config_chdlc;
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u8 config_chdlc_timeout;
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unsigned char mc; /* Mulitcast support on/off */
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unsigned char udp_pkt_src; /* udp packet processing */
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unsigned short timer_int_enabled;
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unsigned long update_comms_stats; /* updating comms stats */
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unsigned long interface_down;
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/* Polling task queue. Each interface
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* has its own task queue, which is used
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* to defer events from the interrupt */
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struct tq_struct poll_task;
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struct timer_list poll_delay_timer;
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u8 gateway;
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u8 true_if_encoding;
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//FIXME: add driver stats as per frame relay!
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/* Entry in proc fs per each interface */
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struct proc_dir_entry* dent;
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unsigned char udp_pkt_data[sizeof(wan_udp_pkt_t)+10];
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atomic_t udp_pkt_len;
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char if_name[WAN_IFNAME_SZ+1];
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netdevice_t *annexg_dev;
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unsigned char label[WAN_IF_LABEL_SZ+1];
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} chdlc_private_area_t;
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/* Route Status options */
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#define NO_ROUTE 0x00
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#define ADD_ROUTE 0x01
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#define ROUTE_ADDED 0x02
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#define REMOVE_ROUTE 0x03
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/* variable for tracking how many interfaces to open for WANPIPE on the
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two ports */
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extern void disable_irq(unsigned int);
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extern void enable_irq(unsigned int);
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/****** Function Prototypes *************************************************/
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/* WAN link driver entry points. These are called by the WAN router module. */
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static int update (wan_device_t* wandev);
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static int new_if (wan_device_t* wandev, netdevice_t* dev,
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wanif_conf_t* conf);
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static int del_if(wan_device_t *wandev, netdevice_t *dev);
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/* Network device interface */
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static int if_init (netdevice_t* dev);
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static int if_open (netdevice_t* dev);
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static int if_close (netdevice_t* dev);
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static int if_do_ioctl(netdevice_t *dev, struct ifreq *ifr, int cmd);
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static struct net_device_stats* if_stats (netdevice_t* dev);
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static int if_send (struct sk_buff* skb, netdevice_t* dev);
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/* CHDLC Firmware interface functions */
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static int chdlc_comm_enable (sdla_t* card);
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static int chdlc_comm_disable (sdla_t* card);
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static int chdlc_read_version (sdla_t* card, char* str, int str_size);
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static int chdlc_set_intr_mode (sdla_t* card, unsigned mode);
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static int set_adapter_config (sdla_t* card);
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static int chdlc_send (sdla_t* card, void* data, unsigned len, unsigned char tx_bits);
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static int chdlc_read_comm_err_stats (sdla_t* card);
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static int chdlc_error (sdla_t *card, int err, wan_mbox_t *mb);
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static int chdlc_disable_comm_shutdown (sdla_t *card);
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static void if_tx_timeout (netdevice_t *dev);
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/* Miscellaneous CHDLC Functions */
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static void init_chdlc_tx_rx_buff( sdla_t* card);
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static int process_global_exception(sdla_t *card);
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static int update_comms_stats(sdla_t* card,
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chdlc_private_area_t* chdlc_priv_area);
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static void port_set_state (sdla_t *card, int);
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static int config_chdlc (sdla_t *card, netdevice_t *dev);
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static void disable_comm (sdla_t *card);
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/* Miscellaneous asynchronous interface Functions */
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static int set_asy_config (sdla_t* card);
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static int asy_comm_enable (sdla_t* card);
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/* Interrupt handlers */
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static WAN_IRQ_RETVAL wpc_isr (sdla_t* card);
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static void rx_intr (sdla_t* card);
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static void timer_intr(sdla_t *);
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/* Bottom half handlers */
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static void chdlc_bh (unsigned long data);
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/* Miscellaneous functions */
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static int chk_bcast_mcast_addr(sdla_t* card, netdevice_t* dev,
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struct sk_buff *skb);
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static int reply_udp( unsigned char *data, unsigned int mbox_len );
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static int intr_test( sdla_t* card);
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static int udp_pkt_type( struct sk_buff *skb , sdla_t* card);
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static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
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struct sk_buff *skb, netdevice_t* dev,
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chdlc_private_area_t* chdlc_priv_area);
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static int process_udp_mgmt_pkt(sdla_t* card, netdevice_t* dev,
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chdlc_private_area_t* chdlc_priv_area,
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int local_dev);
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static unsigned short calc_checksum (char *, int);
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static void s508_lock (sdla_t *card, unsigned long *smp_flags);
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static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
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#define CRC_LENGTH 2
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static int chdlc_get_config_info(void* priv, struct seq_file* m, int*);
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static int chdlc_get_status_info(void* priv, struct seq_file* m, int*);
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static int chdlc_set_dev_config(struct file*, const char*, unsigned long, void *);
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static int chdlc_set_if_info(struct file*, const char*, unsigned long, void *);
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/* TE1 */
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static WRITE_FRONT_END_REG_T write_front_end_reg;
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static READ_FRONT_END_REG_T read_front_end_reg;
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static void chdlc_enable_timer(void* card_id);
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static void chdlc_handle_front_end_state(void* card_id);
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/****** Public Functions ****************************************************/
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/*============================================================================
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* wp_asyhdlc_init - Cisco HDLC protocol initialization routine.
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*
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* @card: Wanpipe card pointer
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* @conf: User hardware/firmware/general protocol configuration
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* pointer.
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*
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* This routine is called by the main WANPIPE module
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* during setup: ROUTER_SETUP ioctl().
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*
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* At this point adapter is completely initialized
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* and firmware is running.
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* o read firmware version (to make sure it's alive)
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* o configure adapter
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* o initialize protocol-specific fields of the adapter data space.
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*
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* Return: 0 o.k.
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* < 0 failure.
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*/
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int wp_asyhdlc_init (sdla_t* card, wandev_conf_t* conf)
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{
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unsigned char port_num;
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int err;
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unsigned long max_permitted_baud = 0;
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char str[80];
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volatile wan_mbox_t* mb;
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wan_mbox_t* mb1;
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unsigned long timeout;
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/* Verify configuration ID */
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if (conf->config_id != WANCONFIG_ASYHDLC) {
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printk(KERN_INFO "%s: invalid configuration ID %u!\n",
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card->devname, conf->config_id);
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return -EINVAL;
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}
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/* Find out which Port to use */
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if ((conf->comm_port == WANOPT_PRI) || (conf->comm_port == WANOPT_SEC)){
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if (card->next){
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if (conf->comm_port != card->next->u.c.comm_port){
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card->u.c.comm_port = conf->comm_port;
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}else{
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printk(KERN_INFO "%s: ERROR - %s port used!\n",
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card->wandev.name, PORT(conf->comm_port));
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return -EINVAL;
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}
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}else{
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card->u.c.comm_port = conf->comm_port;
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}
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}else{
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printk(KERN_INFO "%s: ERROR - Invalid Port Selected!\n",
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card->wandev.name);
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return -EINVAL;
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}
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/* Initialize protocol-specific fields */
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/* ALEX: Apr 8 2004 SANGOMA ISA CARD */
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/* for a PCI/ISA adapters, set a pointer to the actual mailbox in the */
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/* allocated virtual memory area */
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if (card->u.c.comm_port == WANOPT_PRI){
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card->mbox_off = PRI_BASE_ADDR_MB_STRUCT;
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}else{
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card->mbox_off = SEC_BASE_ADDR_MB_STRUCT;
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}
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mb = &card->wan_mbox;
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mb1 = &card->wan_mbox;
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if (!card->configured){
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unsigned char return_code = 0x00;
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/* The board will place an 'I' in the return code to indicate that it is
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ready to accept commands. We expect this to be completed in less
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than 1 second. */
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timeout = jiffies;
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do {
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return_code = 0x00;
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card->hw_iface.peek(card->hw,
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card->mbox_off+offsetof(wan_mbox_t, wan_return_code),
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&return_code,
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sizeof(unsigned char));
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if ((jiffies - timeout) > 1*HZ) break;
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}while(return_code != 'I');
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if (return_code != 'I') {
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printk(KERN_INFO
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"%s: Initialization not completed by adapter\n",
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card->devname);
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printk(KERN_INFO "Please contact Sangoma representative.\n");
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return -EIO;
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}
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}
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card->wandev.clocking = conf->clocking;
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card->wandev.ignore_front_end_status = conf->ignore_front_end_status;
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card->wandev.line_idle = conf->line_idle;
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card->wandev.line_coding = conf->line_coding;
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card->wandev.connection = conf->connection;
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err = (card->hw_iface.check_mismatch) ?
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card->hw_iface.check_mismatch(card->hw,conf->fe_cfg.media) : -EINVAL;
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if (err){
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return err;
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}
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/* TE1 Make special hardware initialization for T1/E1 board */
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if (IS_TE1_MEDIA(&conf->fe_cfg)){
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memcpy(&card->fe.fe_cfg, &conf->fe_cfg, sizeof(sdla_fe_cfg_t));
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sdla_te_iface_init(&card->wandev.fe_iface);
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card->fe.name = card->devname;
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card->fe.card = card;
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card->fe.write_fe_reg = write_front_end_reg;
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card->fe.read_fe_reg = read_front_end_reg;
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card->wandev.fe_enable_timer = chdlc_enable_timer;
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card->wandev.te_link_state = chdlc_handle_front_end_state;
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conf->interface =
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(IS_T1_CARD(card)) ? WANOPT_V35 : WANOPT_RS232;
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if (card->u.c.comm_port == WANOPT_PRI){
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conf->clocking = WANOPT_EXTERNAL;
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}
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}else if (IS_56K_MEDIA(&conf->fe_cfg)){
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memcpy(&card->fe.fe_cfg, &conf->fe_cfg, sizeof(sdla_fe_cfg_t));
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sdla_56k_iface_init(&card->wandev.fe_iface);
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card->fe.name = card->devname;
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card->fe.card = card;
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card->fe.write_fe_reg = write_front_end_reg;
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card->fe.read_fe_reg = read_front_end_reg;
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if (card->u.c.comm_port == WANOPT_PRI){
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conf->clocking = WANOPT_EXTERNAL;
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}
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}else{
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card->fe.fe_status = FE_CONNECTED;
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}
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if (card->wandev.ignore_front_end_status == WANOPT_NO){
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printk(KERN_INFO
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"%s: Enabling front end link monitor\n",
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card->devname);
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}else{
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printk(KERN_INFO
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"%s: Disabling front end link monitor\n",
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card->devname);
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}
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/* Read firmware version. Note that when adapter initializes, it
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* clears the mailbox, so it may appear that the first command was
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* executed successfully when in fact it was merely erased. To work
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* around this, we execute the first command twice.
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*/
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if (chdlc_read_version(card, str, sizeof(str)))
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return -EIO;
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printk(KERN_INFO "%s: Running Cisco HDLC firmware v%s\n",
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card->devname, str);
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if (set_adapter_config(card)) {
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return -EIO;
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}
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card->isr = &wpc_isr;
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card->poll = NULL;
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card->exec = NULL;
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card->wandev.update = &update;
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card->wandev.new_if = &new_if;
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card->wandev.del_if = &del_if;
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card->wandev.udp_port = conf->udp_port;
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card->wandev.new_if_cnt = 0;
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atomic_set(&card->wandev.if_cnt,0);
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// Proc fs functions
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card->wandev.get_config_info = &chdlc_get_config_info;
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card->wandev.get_status_info = &chdlc_get_status_info;
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card->wandev.set_dev_config = &chdlc_set_dev_config;
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card->wandev.set_if_info = &chdlc_set_if_info;
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|
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/* reset the number of times the 'update()' proc has been called */
|
|
card->u.c.update_call_count = 0;
|
|
|
|
card->wandev.ttl = conf->ttl;
|
|
card->wandev.interface = conf->interface;
|
|
|
|
if ((card->u.c.comm_port == WANOPT_SEC && conf->interface == WANOPT_V35)&&
|
|
card->type != SDLA_S514){
|
|
printk(KERN_INFO "%s: ERROR - V35 Interface not supported on S508 %s port \n",
|
|
card->devname, PORT(card->u.c.comm_port));
|
|
return -EIO;
|
|
}
|
|
|
|
|
|
port_num = card->u.c.comm_port;
|
|
|
|
/* in API mode, we can configure for "receive only" buffering */
|
|
if(card->type == SDLA_S514) {
|
|
card->u.c.receive_only = conf->receive_only;
|
|
if(conf->receive_only) {
|
|
printk(KERN_INFO
|
|
"%s: Configured for 'receive only' mode\n",
|
|
card->devname);
|
|
}
|
|
}
|
|
|
|
/* Setup Port Bps */
|
|
|
|
if(card->wandev.clocking) {
|
|
max_permitted_baud = MAX_ASY_BAUD_RATE;
|
|
|
|
if(conf->bps > max_permitted_baud) {
|
|
conf->bps = max_permitted_baud;
|
|
printk(KERN_INFO "%s: Baud too high!\n",
|
|
card->wandev.name);
|
|
printk(KERN_INFO "%s: Baud rate set to %lu bps\n",
|
|
card->wandev.name, max_permitted_baud);
|
|
}
|
|
card->wandev.bps = conf->bps;
|
|
}else{
|
|
card->wandev.bps = 0;
|
|
}
|
|
|
|
card->wandev.mtu = conf->mtu;
|
|
|
|
|
|
/* Set up the interrupt status area */
|
|
/* Read the CHDLC Configuration and obtain:
|
|
* Ptr to shared memory infor struct
|
|
* Use this pointer to calculate the value of card->u.c.flags !
|
|
*/
|
|
mb1->wan_data_len = 0;
|
|
mb1->wan_command = READ_ASY_CONFIGURATION;
|
|
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb1);
|
|
if(err != COMMAND_OK) {
|
|
|
|
DEBUG_EVENT("%s: CHDLC READ CONFIG cmd rc=0x%X\n",
|
|
card->devname,err);
|
|
|
|
if(card->type != SDLA_S514)
|
|
enable_irq(card->wandev.irq);
|
|
|
|
chdlc_error(card, err, mb1);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
/* ALEX: Apr 8 2004 SANGOMA ISA CARD */
|
|
card->flags_off =
|
|
((ASY_CONFIGURATION_STRUCT *)mb1->wan_data)->
|
|
ptr_shared_mem_info_struct;
|
|
|
|
card->intr_type_off =
|
|
card->flags_off +
|
|
offsetof(SHARED_MEMORY_INFO_STRUCT, interrupt_info_struct) +
|
|
offsetof(INTERRUPT_INFORMATION_STRUCT, interrupt_type);
|
|
card->intr_perm_off =
|
|
card->flags_off +
|
|
offsetof(SHARED_MEMORY_INFO_STRUCT, interrupt_info_struct) +
|
|
offsetof(INTERRUPT_INFORMATION_STRUCT, interrupt_permission);
|
|
card->fe_status_off =
|
|
card->flags_off +
|
|
offsetof(SHARED_MEMORY_INFO_STRUCT, FT1_info_struct) +
|
|
offsetof(FT1_INFORMATION_STRUCT, parallel_port_A_input);
|
|
|
|
/* This is for the ports link state */
|
|
card->wandev.state = WAN_DUALPORT;
|
|
|
|
|
|
if (!card->wandev.piggyback){
|
|
int err;
|
|
|
|
/* Perform interrupt testing */
|
|
err = intr_test(card);
|
|
|
|
if(err || (card->timer_int_enabled < 1)) {
|
|
printk(KERN_INFO "%s: Interrupt test failed (%i)\n",
|
|
card->devname, card->timer_int_enabled);
|
|
printk(KERN_INFO "%s: Please choose another interrupt\n",
|
|
card->devname);
|
|
return -EIO;
|
|
}
|
|
printk(KERN_INFO "%s: Interrupt test passed (%i)\n",
|
|
card->devname, card->timer_int_enabled);
|
|
card->configured = 1;
|
|
}
|
|
|
|
if (chdlc_set_intr_mode(card, APP_INT_ON_TIMER)){
|
|
printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
|
|
card->devname);
|
|
return -EIO;
|
|
}
|
|
|
|
/* Mask the Timer interrupt */
|
|
card->hw_iface.clear_bit(card->hw, card->intr_perm_off, APP_INT_ON_TIMER);
|
|
|
|
/* If we are using CHDLC in backup mode, this flag will
|
|
* indicate not to look for IP addresses in config_chdlc()*/
|
|
card->u.c.backup = conf->backup;
|
|
card->disable_comm = &disable_comm;
|
|
|
|
printk(KERN_INFO "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******* WAN Device Driver Entry Points *************************************/
|
|
|
|
/*============================================================================
|
|
* update - Update wanpipe device status & statistics
|
|
*
|
|
* @wandev: Wanpipe device pointer
|
|
*
|
|
* This procedure is called when updating the PROC file system.
|
|
* It returns various communications statistics.
|
|
*
|
|
* cat /proc/net/wanrouter/wanpipe# (where #=1,2,3...)
|
|
*
|
|
* These statistics are accumulated from 3
|
|
* different locations:
|
|
* 1) The 'if_stats' recorded for the device.
|
|
* 2) Communication error statistics on the adapter.
|
|
* 3) CHDLC operational statistics on the adapter.
|
|
*
|
|
* The board level statistics are read during a timer interrupt.
|
|
* Note that we read the error and operational statistics
|
|
* during consecitive timer ticks so as to minimize the time
|
|
* that we are inside the interrupt handler.
|
|
*
|
|
*/
|
|
static int update (wan_device_t* wandev)
|
|
{
|
|
sdla_t* card = wandev->private;
|
|
netdevice_t *dev;
|
|
chdlc_private_area_t* chdlc_priv_area;
|
|
unsigned long smp_flags;
|
|
#if 0
|
|
SHARED_MEMORY_INFO_STRUCT *flags;
|
|
unsigned long timeout;
|
|
#endif
|
|
|
|
/* sanity checks */
|
|
if((wandev == NULL) || (wandev->private == NULL))
|
|
return -EFAULT;
|
|
|
|
if(wandev->state == WAN_UNCONFIGURED)
|
|
return -ENODEV;
|
|
|
|
/* more sanity checks */
|
|
if(test_bit(PERI_CRIT, (void*)&card->wandev.critical))
|
|
return -EAGAIN;
|
|
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
if (dev == NULL)
|
|
return -ENODEV;
|
|
|
|
if((chdlc_priv_area = wan_netif_priv(dev)) == NULL)
|
|
return -ENODEV;
|
|
|
|
#if 0
|
|
flags = card->u.c.flags;
|
|
#endif
|
|
|
|
if(test_and_set_bit(0,&chdlc_priv_area->update_comms_stats)){
|
|
return -EAGAIN;
|
|
}
|
|
|
|
/* TE1 Change the update_comms_stats variable to 3,
|
|
* only for T1/E1 card, otherwise 2 for regular
|
|
* S514/S508 card.
|
|
* Each timer interrupt will update only one type
|
|
* of statistics.
|
|
*/
|
|
|
|
|
|
#if 0
|
|
chdlc_priv_area->update_comms_stats =
|
|
(IS_TE1_CARD(card) || IS_56K_CARD(card)) ? 3 : 2;
|
|
flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
|
|
card->u.c.timer_int_enabled = TMR_INT_ENABLED_UPDATE;
|
|
|
|
/* wait a maximum of 1 second for the statistics to be updated */
|
|
timeout = jiffies;
|
|
for(;;) {
|
|
if(chdlc_priv_area->update_comms_stats == 0)
|
|
break;
|
|
if ((jiffies - timeout) > (1 * HZ)){
|
|
chdlc_priv_area->update_comms_stats = 0;
|
|
card->u.c.timer_int_enabled &=
|
|
~TMR_INT_ENABLED_UPDATE;
|
|
return -EAGAIN;
|
|
}
|
|
}
|
|
#else
|
|
spin_lock_irqsave(&card->wandev.lock, smp_flags);
|
|
update_comms_stats(card, chdlc_priv_area);
|
|
chdlc_priv_area->update_comms_stats=0;
|
|
spin_unlock_irqrestore(&card->wandev.lock, smp_flags);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* new_if - Create new logical channel.
|
|
*
|
|
* &wandev: Wanpipe device pointer
|
|
* &dev: Network device pointer
|
|
* &conf: User configuration options pointer
|
|
*
|
|
* This routine is called by the ROUTER_IFNEW ioctl,
|
|
* in wanmain.c. The ioctl passes us the user configuration
|
|
* options which we use to configure the driver and
|
|
* firmware.
|
|
*
|
|
* This functions main purpose is to allocate the
|
|
* private structure for CHDLC protocol and bind it
|
|
* to dev->priv pointer.
|
|
*
|
|
* Also the dev->init pointer should also be initialized
|
|
* to the if_init() function.
|
|
*
|
|
* Any allocation necessary for the private strucutre
|
|
* should be done here, as well as proc/ file initializetion
|
|
* for the network interface.
|
|
*
|
|
* o parse media- and hardware-specific configuration
|
|
* o make sure that a new channel can be created
|
|
* o allocate resources, if necessary
|
|
* o prepare network device structure for registaration.
|
|
* o add network interface to the /proc/net/wanrouter
|
|
*
|
|
* The opposite of this function is del_if()
|
|
*
|
|
* Return: 0 o.k.
|
|
* < 0 failure (channel will not be created)
|
|
*/
|
|
static int new_if (wan_device_t* wandev, netdevice_t* dev, wanif_conf_t* conf)
|
|
{
|
|
sdla_t* card = wandev->private;
|
|
chdlc_private_area_t* chdlc_priv_area;
|
|
int err = 0;
|
|
|
|
printk(KERN_INFO "%s: Configuring Interface: %s\n",
|
|
card->devname, conf->name);
|
|
|
|
if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
|
|
printk(KERN_INFO "%s: Invalid interface name!\n",
|
|
card->devname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* allocate and initialize private data */
|
|
chdlc_priv_area = kmalloc(sizeof(chdlc_private_area_t), GFP_KERNEL);
|
|
|
|
if(chdlc_priv_area == NULL){
|
|
WAN_MEM_ASSERT(card->devname);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memset(chdlc_priv_area, 0, sizeof(chdlc_private_area_t));
|
|
|
|
chdlc_priv_area->card = card;
|
|
strcpy(chdlc_priv_area->if_name, conf->name);
|
|
|
|
WAN_TASKLET_INIT((&chdlc_priv_area->common.bh_task),0,chdlc_bh,(unsigned long)chdlc_priv_area);
|
|
if (atomic_read(&card->wandev.if_cnt) > 0){
|
|
err=-EEXIST;
|
|
goto new_if_error;
|
|
}
|
|
|
|
chdlc_priv_area->TracingEnabled = 0;
|
|
chdlc_priv_area->route_status = NO_ROUTE;
|
|
chdlc_priv_area->route_removed = 0;
|
|
|
|
card->u.c.async_mode = 1; //conf->async_mode;
|
|
|
|
/* setup for asynchronous mode */
|
|
if(card->u.c.async_mode) {
|
|
printk(KERN_INFO "%s: Configuring for asynchronous mode\n",
|
|
wandev->name);
|
|
|
|
if(strcmp(conf->usedby, "WANPIPE") == 0) {
|
|
printk(KERN_INFO "%s: Running in WANIPE Async Mode\n",
|
|
wandev->name);
|
|
chdlc_priv_area->common.usedby = WANPIPE;
|
|
}else{
|
|
printk(KERN_INFO "%s: Running in API Async Mode\n",
|
|
wandev->name);
|
|
chdlc_priv_area->common.usedby = API;
|
|
wan_reg_api(chdlc_priv_area, dev, card->devname);
|
|
}
|
|
|
|
if(!card->wandev.clocking) {
|
|
printk(KERN_INFO
|
|
"%s: Asynch. clocking must be 'Internal'\n",
|
|
wandev->name);
|
|
|
|
err=-EINVAL;
|
|
goto new_if_error;
|
|
}
|
|
|
|
if((card->wandev.bps < MIN_ASY_BAUD_RATE) ||
|
|
(card->wandev.bps > MAX_ASY_BAUD_RATE)) {
|
|
printk(KERN_INFO "%s: Selected baud rate is invalid.\n",
|
|
wandev->name);
|
|
printk(KERN_INFO "Must be between %u and %u bps.\n",
|
|
MIN_ASY_BAUD_RATE, MAX_ASY_BAUD_RATE);
|
|
|
|
err=-EINVAL;
|
|
goto new_if_error;
|
|
}
|
|
|
|
card->u.c.api_options = 0;
|
|
|
|
card->u.c.protocol_options = conf->u.chdlc.protocol_options;
|
|
|
|
DEBUG_EVENT("%s: Asy Prtocol Options: 0x%04X\n",
|
|
card->devname,card->u.c.protocol_options);
|
|
|
|
card->u.c.tx_bits_per_char = conf->tx_bits_per_char;
|
|
card->u.c.rx_bits_per_char = conf->rx_bits_per_char;
|
|
card->u.c.stop_bits = conf->stop_bits;
|
|
card->u.c.parity = conf->parity;
|
|
card->u.c.break_timer = conf->break_timer;
|
|
card->u.c.inter_char_timer = conf->inter_char_timer;
|
|
card->u.c.rx_complete_length = conf->rx_complete_length;
|
|
card->u.c.xon_char = conf->xon_char;
|
|
|
|
}
|
|
|
|
/* Tells us that if this interface is a
|
|
* gateway or not */
|
|
if ((chdlc_priv_area->gateway = conf->gateway) == WANOPT_YES){
|
|
printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
|
|
card->devname,chdlc_priv_area->if_name);
|
|
}
|
|
|
|
/* Get Multicast Information */
|
|
chdlc_priv_area->mc = conf->mc;
|
|
|
|
/*
|
|
* Create interface file in proc fs.
|
|
* Once the proc file system is created, the new_if() function
|
|
* should exit successfuly.
|
|
*
|
|
* DO NOT place code under this function that can return
|
|
* anything else but 0.
|
|
*/
|
|
err = wanrouter_proc_add_interface(wandev,
|
|
&chdlc_priv_area->dent,
|
|
chdlc_priv_area->if_name,
|
|
dev);
|
|
if (err){
|
|
printk(KERN_INFO
|
|
"%s: can't create /proc/net/router/fr/%s entry!\n",
|
|
card->devname, chdlc_priv_area->if_name);
|
|
goto new_if_error;
|
|
}
|
|
|
|
/* Only setup the dev pointer once the new_if function has
|
|
* finished successfully. DO NOT place any code below that
|
|
* can return an error */
|
|
|
|
dev->init = &if_init;
|
|
dev->priv = chdlc_priv_area;
|
|
|
|
set_bit(0,&chdlc_priv_area->config_chdlc);
|
|
|
|
atomic_inc(&card->wandev.if_cnt);
|
|
|
|
printk(KERN_INFO "\n");
|
|
|
|
return 0;
|
|
|
|
new_if_error:
|
|
|
|
WAN_TASKLET_KILL(&chdlc_priv_area->common.bh_task);
|
|
wan_unreg_api(chdlc_priv_area, card->devname);
|
|
|
|
kfree(chdlc_priv_area);
|
|
|
|
dev->priv=NULL;
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* del_if - Delete logical channel.
|
|
*
|
|
* @wandev: Wanpipe private device pointer
|
|
* @dev: Netowrk interface pointer
|
|
*
|
|
* This function is called by ROUTER_DELIF ioctl call
|
|
* to deallocate the network interface.
|
|
*
|
|
* The network interface and the private structure are
|
|
* about to be deallocated by the upper layer.
|
|
* We have to clean and deallocate any allocated memory.
|
|
*
|
|
*/
|
|
static int del_if (wan_device_t* wandev, netdevice_t* dev)
|
|
{
|
|
chdlc_private_area_t* chdlc_priv_area = dev->priv;
|
|
sdla_t* card = chdlc_priv_area->card;
|
|
|
|
WAN_TASKLET_KILL(&chdlc_priv_area->common.bh_task);
|
|
wan_unreg_api(chdlc_priv_area, card->devname);
|
|
|
|
/* Delete interface name from proc fs. */
|
|
wanrouter_proc_delete_interface(wandev, chdlc_priv_area->if_name);
|
|
|
|
atomic_dec(&card->wandev.if_cnt);
|
|
return 0;
|
|
}
|
|
|
|
/****** Network Device Interface ********************************************/
|
|
|
|
/*============================================================================
|
|
* if_init - Initialize Linux network interface.
|
|
*
|
|
* @dev: Network interface pointer
|
|
*
|
|
* During "ifconfig up" the upper layer calls this function
|
|
* to initialize dev access pointers. Such as transmit,
|
|
* stats and header.
|
|
*
|
|
* It is called only once for each interface,
|
|
* during Linux network interface registration.
|
|
*
|
|
* Returning anything but zero will fail interface
|
|
* registration.
|
|
*/
|
|
static int if_init (netdevice_t* dev)
|
|
{
|
|
chdlc_private_area_t* chdlc_priv_area = dev->priv;
|
|
sdla_t* card = chdlc_priv_area->card;
|
|
wan_device_t* wandev = &card->wandev;
|
|
|
|
/* Initialize device driver entry points */
|
|
dev->open = &if_open;
|
|
dev->stop = &if_close;
|
|
dev->hard_header = NULL;
|
|
dev->rebuild_header = NULL;
|
|
dev->hard_start_xmit = &if_send;
|
|
dev->get_stats = &if_stats;
|
|
#if defined(LINUX_2_4)||defined(LINUX_2_6)
|
|
dev->tx_timeout = &if_tx_timeout;
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|
#endif
|
|
dev->do_ioctl = if_do_ioctl;
|
|
|
|
if (chdlc_priv_area->common.usedby == BRIDGE ||
|
|
chdlc_priv_area->common.usedby == BRIDGE_NODE){
|
|
|
|
/* Setup the interface for Bridging */
|
|
int hw_addr=0;
|
|
ether_setup(dev);
|
|
|
|
/* Use a random number to generate the MAC address */
|
|
memcpy(dev->dev_addr, "\xFE\xFC\x00\x00\x00\x00", 6);
|
|
get_random_bytes(&hw_addr, sizeof(hw_addr));
|
|
*(int *)(dev->dev_addr + 2) += hw_addr;
|
|
|
|
}else{
|
|
/* Initialize media-specific parameters */
|
|
dev->flags |= IFF_POINTOPOINT;
|
|
dev->flags |= IFF_NOARP;
|
|
|
|
/* Enable Mulitcasting if user selected */
|
|
if (chdlc_priv_area->mc == WANOPT_YES){
|
|
dev->flags |= (IFF_MULTICAST|IFF_ALLMULTI);
|
|
}
|
|
|
|
if (chdlc_priv_area->true_if_encoding){
|
|
dev->type = ARPHRD_HDLC; /* This breaks the tcpdump */
|
|
}else{
|
|
dev->type = ARPHRD_PPP;
|
|
}
|
|
|
|
dev->mtu = card->wandev.mtu;
|
|
/* for API usage, add the API header size to the requested MTU size */
|
|
if(chdlc_priv_area->common.usedby == API) {
|
|
dev->mtu += sizeof(api_tx_hdr_t);
|
|
}
|
|
|
|
dev->hard_header_len = 0;
|
|
}
|
|
|
|
/* Initialize hardware parameters */
|
|
dev->irq = wandev->irq;
|
|
dev->dma = wandev->dma;
|
|
dev->base_addr = wandev->ioport;
|
|
card->hw_iface.getcfg(card->hw, SDLA_MEMBASE, &dev->mem_start);
|
|
card->hw_iface.getcfg(card->hw, SDLA_MEMEND, &dev->mem_end);
|
|
|
|
/* Set transmit buffer queue length
|
|
* If too low packets will not be retransmitted
|
|
* by stack.
|
|
*/
|
|
dev->tx_queue_len = 100;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* if_open - Open network interface.
|
|
*
|
|
* @dev: Network device pointer
|
|
*
|
|
* On ifconfig up, this function gets called in order
|
|
* to initialize and configure the private area.
|
|
* Driver should be configured to send and receive data.
|
|
*
|
|
* This functions starts a timer that will call
|
|
* chdlc_config() function. This function must be called
|
|
* because the IP addresses could have been changed
|
|
* for this interface.
|
|
*
|
|
* Return 0 if O.k. or errno.
|
|
*/
|
|
static int if_open (netdevice_t* dev)
|
|
{
|
|
chdlc_private_area_t* chdlc_priv_area = dev->priv;
|
|
sdla_t* card = chdlc_priv_area->card;
|
|
struct timeval tv;
|
|
int err = 0;
|
|
|
|
/* Only one open per interface is allowed */
|
|
if (open_dev_check(dev))
|
|
return -EBUSY;
|
|
|
|
do_gettimeofday(&tv);
|
|
chdlc_priv_area->router_start_time = tv.tv_sec;
|
|
|
|
netif_start_queue(dev);
|
|
|
|
/* Increment the module usage count */
|
|
wanpipe_open(card);
|
|
|
|
chdlc_priv_area->config_chdlc_timeout=jiffies;
|
|
|
|
if (wan_test_bit(0,&chdlc_priv_area->config_chdlc)){
|
|
SHARED_MEMORY_INFO_STRUCT flags;
|
|
card->hw_iface.peek(card->hw, card->flags_off, &flags, sizeof(flags));
|
|
|
|
wan_clear_bit(0,&chdlc_priv_area->config_chdlc);
|
|
card->u.c.timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
|
|
flags.interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
|
|
card->hw_iface.poke(card->hw, card->flags_off, &flags, sizeof(flags));
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* if_close - Close network interface.
|
|
*
|
|
* @dev: Network device pointer
|
|
*
|
|
* On ifconfig down, this function gets called in order
|
|
* to cleanup interace private area.
|
|
*
|
|
* IMPORTANT:
|
|
*
|
|
* No deallocation or unconfiguration should ever occur in this
|
|
* function, because the interface can come back up
|
|
* (via ifconfig up).
|
|
*
|
|
* Furthermore, in dynamic interfacace configuration mode, the
|
|
* interface will come up and down to reflect the protocol state.
|
|
*
|
|
* Any private deallocation and cleanup can occur in del_if()
|
|
* function. That function is called before the dev interface
|
|
* itself is deallocated.
|
|
*
|
|
* Thus, we should only stop the net queue and decrement
|
|
* the wanpipe usage counter via wanpipe_close() function.
|
|
*/
|
|
|
|
static int if_close (netdevice_t* dev)
|
|
{
|
|
chdlc_private_area_t* chdlc_priv_area = dev->priv;
|
|
sdla_t* card = chdlc_priv_area->card;
|
|
|
|
stop_net_queue(dev);
|
|
|
|
#if defined(LINUX_2_1)
|
|
dev->start=0;
|
|
#endif
|
|
wanpipe_close(card);
|
|
del_timer(&chdlc_priv_area->poll_delay_timer);
|
|
|
|
if (chdlc_priv_area->common.usedby == API){
|
|
unsigned long smp_flags;
|
|
spin_lock_irqsave(&card->wandev.lock,smp_flags);
|
|
wan_unbind_api_from_svc(chdlc_priv_area,
|
|
chdlc_priv_area->common.sk);
|
|
spin_unlock_irqrestore(&card->wandev.lock,smp_flags);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*=============================================================
|
|
* disable_comm - Main shutdown function
|
|
*
|
|
* @card: Wanpipe device pointer
|
|
*
|
|
* The command 'wanrouter stop' has been called
|
|
* and the whole wanpipe device is going down.
|
|
* This is the last function called to disable
|
|
* all comunications and deallocate any memory
|
|
* that is still allocated.
|
|
*
|
|
* o Disable communications, turn off interrupts
|
|
* o Deallocate memory used
|
|
* o Unconfigure TE1 card
|
|
*/
|
|
|
|
static void disable_comm (sdla_t *card)
|
|
{
|
|
unsigned long smp_flags;
|
|
|
|
wan_spin_lock_irq(&card->wandev.lock,&smp_flags);
|
|
if (card->u.c.comm_enabled){
|
|
chdlc_disable_comm_shutdown (card);
|
|
}else{
|
|
card->hw_iface.poke_byte(card->hw, card->intr_perm_off, 0x00);
|
|
}
|
|
wan_spin_unlock_irq(&card->wandev.lock,&smp_flags);
|
|
|
|
/* TE1 - Unconfiging, only on shutdown */
|
|
if (IS_TE1_CARD(card)) {
|
|
if (card->wandev.fe_iface.unconfig){
|
|
card->wandev.fe_iface.unconfig(&card->fe);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/*============================================================================
|
|
* Handle transmit timeout event from netif watchdog
|
|
*/
|
|
static void if_tx_timeout (netdevice_t *dev)
|
|
{
|
|
chdlc_private_area_t* chan = dev->priv;
|
|
sdla_t *card = chan->card;
|
|
|
|
/* If our device stays busy for at least 5 seconds then we will
|
|
* kick start the device by making dev->tbusy = 0. We expect
|
|
* that our device never stays busy more than 5 seconds. So this
|
|
* is only used as a last resort.
|
|
*/
|
|
|
|
++card->wandev.stats.collisions;
|
|
|
|
printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
|
|
netif_wake_queue (dev);
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* if_send - Send a packet on a network interface.
|
|
*
|
|
* @dev: Network interface pointer
|
|
* @skb: Packet obtained from the stack or API
|
|
* that should be sent out the port.
|
|
*
|
|
* o set tbusy flag (marks start of the transmission) to
|
|
* block a timer-based transmit from overlapping.
|
|
* o check link state. If link is not up, then drop the packet.
|
|
* o execute adapter send command.
|
|
* o free socket buffer if the send is successful, otherwise
|
|
* return non zero value and push the packet back into
|
|
* the stack. Also set the tx interrupt to wake up the
|
|
* stack when the firmware is able to send.
|
|
*
|
|
* Return: 0 complete (socket buffer must be freed)
|
|
* non-0 packet may be re-transmitted (tbusy must be set)
|
|
*
|
|
* Notes:
|
|
* 1. This routine is called either by the protocol stack or by the "net
|
|
* bottom half" (with interrupts enabled).
|
|
* 2. Setting tbusy flag will inhibit further transmit requests from the
|
|
* protocol stack and can be used for flow control with protocol layer.
|
|
*/
|
|
static int if_send (struct sk_buff* skb, netdevice_t* dev)
|
|
{
|
|
chdlc_private_area_t *chdlc_priv_area = dev->priv;
|
|
sdla_t *card = chdlc_priv_area->card;
|
|
int udp_type = 0;
|
|
unsigned long smp_flags;
|
|
int err=0;
|
|
unsigned char misc_Tx_bits = 0;
|
|
|
|
#if defined(LINUX_2_4)||defined(LINUX_2_6)
|
|
netif_stop_queue(dev);
|
|
#endif
|
|
|
|
if (skb == NULL){
|
|
/* If we get here, some higher layer thinks we've missed an
|
|
* tx-done interrupt.
|
|
*/
|
|
printk(KERN_INFO "%s: interface %s got kicked!\n",
|
|
card->devname, dev->name);
|
|
|
|
wake_net_dev(dev);
|
|
return 0;
|
|
}
|
|
|
|
#if defined(LINUX_2_1)
|
|
if (dev->tbusy){
|
|
++card->wandev.stats.collisions;
|
|
if((jiffies - chdlc_priv_area->tick_counter) < (5 * HZ)) {
|
|
return 1;
|
|
}
|
|
|
|
if_tx_timeout (dev);
|
|
}
|
|
#endif
|
|
|
|
if (chdlc_priv_area->common.usedby != ANNEXG &&
|
|
skb->protocol != htons(PVC_PROT)){
|
|
|
|
/* check the udp packet type */
|
|
|
|
udp_type = udp_pkt_type(skb, card);
|
|
|
|
if (udp_type == UDP_CPIPE_TYPE){
|
|
if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
|
|
chdlc_priv_area)){
|
|
card->hw_iface.set_bit(card->hw, card->intr_perm_off, APP_INT_ON_TIMER);
|
|
}
|
|
start_net_queue(dev);
|
|
return 0;
|
|
}
|
|
|
|
/* check to see if the source IP address is a broadcast or */
|
|
/* multicast IP address */
|
|
if(chdlc_priv_area->common.usedby == WANPIPE && chk_bcast_mcast_addr(card, dev, skb)){
|
|
++card->wandev.stats.tx_dropped;
|
|
wan_skb_free(skb);
|
|
start_net_queue(dev);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Lock the 508 Card: SMP is supported */
|
|
if(card->type != SDLA_S514){
|
|
s508_lock(card,&smp_flags);
|
|
}
|
|
|
|
if(test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
|
|
|
|
printk(KERN_INFO "%s: Critical in if_send: %lx\n",
|
|
card->wandev.name,card->wandev.critical);
|
|
++card->wandev.stats.tx_dropped;
|
|
goto if_send_exit_crit;
|
|
}
|
|
|
|
if(card->wandev.state != WAN_CONNECTED){
|
|
++card->wandev.stats.tx_dropped;
|
|
|
|
}else if(!skb->protocol){
|
|
++card->wandev.stats.tx_errors;
|
|
|
|
}else {
|
|
void* data = skb->data;
|
|
unsigned len = skb->len;
|
|
unsigned char attr;
|
|
|
|
/* If it's an API packet pull off the API
|
|
* header. Also check that the packet size
|
|
* is larger than the API header
|
|
*/
|
|
if (chdlc_priv_area->common.usedby == API){
|
|
api_tx_hdr_t* api_tx_hdr;
|
|
|
|
/* discard the frame if we are configured for */
|
|
/* 'receive only' mode or if there is no data */
|
|
if (card->u.c.receive_only ||
|
|
(len <= sizeof(api_tx_hdr_t))) {
|
|
|
|
++card->wandev.stats.tx_dropped;
|
|
goto if_send_exit_crit;
|
|
}
|
|
|
|
api_tx_hdr = (api_tx_hdr_t *)data;
|
|
attr = api_tx_hdr->attr;
|
|
misc_Tx_bits = api_tx_hdr->misc_Tx_bits;
|
|
data += sizeof(api_tx_hdr_t);
|
|
len -= sizeof(api_tx_hdr_t);
|
|
}
|
|
|
|
err=chdlc_send(card, data, len, misc_Tx_bits);
|
|
|
|
if(err) {
|
|
err=-1;
|
|
}else{
|
|
++card->wandev.stats.tx_packets;
|
|
card->wandev.stats.tx_bytes += len;
|
|
#if defined(LINUX_2_4)||defined(LINUX_2_6)
|
|
dev->trans_start = jiffies;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if_send_exit_crit:
|
|
|
|
if (err==0){
|
|
wan_skb_free(skb);
|
|
start_net_queue(dev);
|
|
}else{
|
|
stop_net_queue(dev);
|
|
chdlc_priv_area->tick_counter = jiffies;
|
|
card->hw_iface.set_bit(card->hw, card->intr_perm_off, APP_INT_ON_TX);
|
|
}
|
|
|
|
clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
|
|
if(card->type != SDLA_S514){
|
|
s508_unlock(card,&smp_flags);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* chk_bcast_mcast_addr - Check for source broadcast addresses
|
|
*
|
|
* Check to see if the packet to be transmitted contains a broadcast or
|
|
* multicast source IP address.
|
|
*/
|
|
|
|
static int chk_bcast_mcast_addr(sdla_t *card, netdevice_t* dev,
|
|
struct sk_buff *skb)
|
|
{
|
|
u32 src_ip_addr;
|
|
u32 broadcast_ip_addr = 0;
|
|
chdlc_private_area_t *chdlc_priv_area=dev->priv;
|
|
struct in_device *in_dev;
|
|
/* read the IP source address from the outgoing packet */
|
|
src_ip_addr = *(u32 *)(skb->data + 12);
|
|
|
|
if (chdlc_priv_area->common.usedby != WANPIPE){
|
|
return 0;
|
|
}
|
|
|
|
/* read the IP broadcast address for the device */
|
|
in_dev = dev->ip_ptr;
|
|
if(in_dev != NULL) {
|
|
struct in_ifaddr *ifa= in_dev->ifa_list;
|
|
if(ifa != NULL)
|
|
broadcast_ip_addr = ifa->ifa_broadcast;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* check if the IP Source Address is a Broadcast address */
|
|
if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
|
|
printk(KERN_INFO "%s: Broadcast Source Address silently discarded\n",
|
|
card->devname);
|
|
return 1;
|
|
}
|
|
|
|
/* check if the IP Source Address is a Multicast address */
|
|
if((ntohl(src_ip_addr) >= 0xE0000001) &&
|
|
(ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
|
|
printk(KERN_INFO "%s: Multicast Source Address silently discarded\n",
|
|
card->devname);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* Reply to UDP Management system.
|
|
* Return length of reply.
|
|
*/
|
|
static int reply_udp( unsigned char *data, unsigned int mbox_len )
|
|
{
|
|
|
|
unsigned short len, udp_length, temp, ip_length;
|
|
unsigned long ip_temp;
|
|
int even_bound = 0;
|
|
wan_udp_pkt_t *c_udp_pkt = (wan_udp_pkt_t *)data;
|
|
|
|
/* Set length of packet */
|
|
len = sizeof(struct iphdr)+
|
|
sizeof(struct udphdr)+
|
|
sizeof(wan_mgmt_t)+
|
|
sizeof(wan_cmd_t)+
|
|
sizeof(wan_trace_info_t)+
|
|
mbox_len;
|
|
|
|
/* fill in UDP reply */
|
|
c_udp_pkt->wan_udp_request_reply = UDPMGMT_REPLY;
|
|
|
|
/* fill in UDP length */
|
|
udp_length = sizeof(struct udphdr)+
|
|
sizeof(wan_mgmt_t)+
|
|
sizeof(wan_cmd_t)+
|
|
sizeof(wan_trace_info_t)+
|
|
mbox_len;
|
|
|
|
/* put it on an even boundary */
|
|
if ( udp_length & 0x0001 ) {
|
|
udp_length += 1;
|
|
len += 1;
|
|
even_bound = 1;
|
|
}
|
|
|
|
temp = (udp_length<<8)|(udp_length>>8);
|
|
c_udp_pkt->wan_udp_len = temp;
|
|
|
|
/* swap UDP ports */
|
|
temp = c_udp_pkt->wan_udp_sport;
|
|
c_udp_pkt->wan_udp_sport =
|
|
c_udp_pkt->wan_udp_dport;
|
|
c_udp_pkt->wan_udp_dport = temp;
|
|
|
|
/* add UDP pseudo header */
|
|
temp = 0x1100;
|
|
*((unsigned short *)(c_udp_pkt->wan_udp_data+mbox_len+even_bound)) = temp;
|
|
temp = (udp_length<<8)|(udp_length>>8);
|
|
*((unsigned short *)(c_udp_pkt->wan_udp_data+mbox_len+even_bound+2)) = temp;
|
|
|
|
|
|
/* calculate UDP checksum */
|
|
c_udp_pkt->wan_udp_sum = 0;
|
|
c_udp_pkt->wan_udp_sum = calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
|
|
|
|
/* fill in IP length */
|
|
ip_length = len;
|
|
temp = (ip_length<<8)|(ip_length>>8);
|
|
c_udp_pkt->wan_ip_len = temp;
|
|
|
|
/* swap IP addresses */
|
|
ip_temp = c_udp_pkt->wan_ip_src;
|
|
c_udp_pkt->wan_ip_src = c_udp_pkt->wan_ip_dst;
|
|
c_udp_pkt->wan_ip_dst = ip_temp;
|
|
|
|
/* fill in IP checksum */
|
|
c_udp_pkt->wan_ip_sum = 0;
|
|
c_udp_pkt->wan_ip_sum = calc_checksum(data,sizeof(struct iphdr));
|
|
|
|
return len;
|
|
|
|
} /* reply_udp */
|
|
|
|
unsigned short calc_checksum (char *data, int len)
|
|
{
|
|
unsigned short temp;
|
|
unsigned long sum=0;
|
|
int i;
|
|
|
|
for( i = 0; i <len; i+=2 ) {
|
|
memcpy(&temp,&data[i],2);
|
|
sum += (unsigned long)temp;
|
|
}
|
|
|
|
while (sum >> 16 ) {
|
|
sum = (sum & 0xffffUL) + (sum >> 16);
|
|
}
|
|
|
|
temp = (unsigned short)sum;
|
|
temp = ~temp;
|
|
|
|
if( temp == 0 )
|
|
temp = 0xffff;
|
|
|
|
return temp;
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* Get ethernet-style interface statistics.
|
|
* Return a pointer to struct enet_statistics.
|
|
*/
|
|
static struct net_device_stats* if_stats (netdevice_t* dev)
|
|
{
|
|
sdla_t *my_card;
|
|
chdlc_private_area_t* chdlc_priv_area;
|
|
|
|
if ((chdlc_priv_area=dev->priv) == NULL)
|
|
return NULL;
|
|
|
|
my_card = chdlc_priv_area->card;
|
|
return &my_card->wandev.stats;
|
|
}
|
|
|
|
/****** Cisco HDLC Firmware Interface Functions *******************************/
|
|
|
|
/*============================================================================
|
|
* Read firmware code version.
|
|
* Put code version as ASCII string in str.
|
|
*/
|
|
static int chdlc_read_version (sdla_t* card, char* str, int str_size)
|
|
{
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
int len;
|
|
char err;
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = READ_ASY_CODE_VERSION;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
|
|
if(err != COMMAND_OK) {
|
|
chdlc_error(card,err,mb);
|
|
}else if (str) { /* is not null */
|
|
len = mb->wan_data_len;
|
|
if (len < str_size){
|
|
memcpy(str, mb->wan_data, len);
|
|
str[len] = '\0';
|
|
}else{
|
|
DEBUG_EVENT("%s: Error: Version Length greater than max %i>%i!\n",
|
|
card->devname,len,str_size);
|
|
}
|
|
}
|
|
return (err);
|
|
}
|
|
|
|
/*============================================================================
|
|
* Set interrupt mode -- HDLC Version.
|
|
*/
|
|
|
|
static int chdlc_set_intr_mode (sdla_t* card, unsigned mode)
|
|
{
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
ASY_INT_TRIGGERS_STRUCT* int_data =
|
|
(ASY_INT_TRIGGERS_STRUCT *)mb->wan_data;
|
|
int err;
|
|
|
|
int_data->interrupt_triggers = mode;
|
|
int_data->IRQ = card->wandev.irq;
|
|
int_data->interrupt_timer = 1;
|
|
|
|
mb->wan_data_len = sizeof(ASY_INT_TRIGGERS_STRUCT);
|
|
mb->wan_command = SET_ASY_INTERRUPT_TRIGGERS;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK)
|
|
chdlc_error (card, err, mb);
|
|
return err;
|
|
}
|
|
|
|
|
|
/*===========================================================
|
|
* chdlc_disable_comm_shutdown
|
|
*
|
|
* Shutdown() disables the communications. We must
|
|
* have a sparate functions, because we must not
|
|
* call chdlc_error() hander since the private
|
|
* area has already been replaced */
|
|
|
|
static int chdlc_disable_comm_shutdown (sdla_t *card)
|
|
{
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
int err;
|
|
|
|
ASY_INT_TRIGGERS_STRUCT* int_data =
|
|
(ASY_INT_TRIGGERS_STRUCT *)mb->wan_data;
|
|
|
|
/* Disable Interrutps */
|
|
int_data->interrupt_triggers = 0;
|
|
int_data->IRQ = card->wandev.irq;
|
|
int_data->interrupt_timer = 1;
|
|
|
|
mb->wan_data_len = sizeof(ASY_INT_TRIGGERS_STRUCT);
|
|
mb->wan_command = SET_ASY_INTERRUPT_TRIGGERS;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
|
|
/* Disable Communications */
|
|
if (card->u.c.async_mode) {
|
|
mb->wan_command = DISABLE_ASY_COMMUNICATIONS;
|
|
}else{
|
|
mb->wan_command = DISABLE_ASY_COMMUNICATIONS;
|
|
}
|
|
|
|
mb->wan_data_len = 0;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
|
|
card->u.c.comm_enabled = 0;
|
|
|
|
/* TE1 - Unconfiging, only on shutdown */
|
|
if (IS_TE1_CARD(card)) {
|
|
if (card->wandev.fe_iface.unconfig){
|
|
card->wandev.fe_iface.unconfig(&card->fe);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Enable communications.
|
|
*/
|
|
|
|
static int chdlc_comm_enable (sdla_t* card)
|
|
{
|
|
int err;
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = ENABLE_ASY_COMMUNICATIONS;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK)
|
|
chdlc_error(card, err, mb);
|
|
else
|
|
card->u.c.comm_enabled = 1;
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Enable communications.
|
|
*/
|
|
|
|
static int chdlc_comm_disable (sdla_t* card)
|
|
{
|
|
int err;
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = DISABLE_ASY_COMMUNICATIONS;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK)
|
|
chdlc_error(card, err, mb);
|
|
else
|
|
card->u.c.comm_enabled = 0;
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* Read communication error statistics.
|
|
*/
|
|
static int chdlc_read_comm_err_stats (sdla_t* card)
|
|
{
|
|
int err;
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = READ_COMMS_ERROR_STATS;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK)
|
|
chdlc_error(card,err,mb);
|
|
return err;
|
|
}
|
|
|
|
|
|
|
|
/*============================================================================
|
|
* Update communications error and general packet statistics.
|
|
*/
|
|
static int update_comms_stats(sdla_t* card,
|
|
chdlc_private_area_t* chdlc_priv_area)
|
|
{
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
COMMS_ERROR_STATS_STRUCT* err_stats;
|
|
|
|
/* 1. On the first timer interrupt, update T1/E1 alarms
|
|
* and PMON counters (only for T1/E1 card) (TE1)
|
|
*/
|
|
/* TE1 Update T1/E1 alarms */
|
|
if (IS_TE1_CARD(card)) {
|
|
card->wandev.fe_iface.read_alarm(&card->fe, 0);
|
|
/* TE1 Update T1/E1 perfomance counters */
|
|
card->wandev.fe_iface.read_pmon(&card->fe, 0);
|
|
}else if (IS_56K_CARD(card)) {
|
|
/* 56K Update CSU/DSU alarms */
|
|
card->wandev.fe_iface.read_alarm(&card->fe, 1);
|
|
}
|
|
|
|
if(chdlc_read_comm_err_stats(card))
|
|
return 1;
|
|
|
|
err_stats = (COMMS_ERROR_STATS_STRUCT *)mb->wan_data;
|
|
card->wandev.stats.rx_over_errors =
|
|
err_stats->Rx_overrun_err_count;
|
|
card->wandev.stats.rx_crc_errors =
|
|
err_stats->Rx_parity_err_count;
|
|
card->wandev.stats.rx_frame_errors =
|
|
err_stats->Rx_framing_err_count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Send packet.
|
|
* Return: 0 - o.k.
|
|
* 1 - no transmit buffers available
|
|
*/
|
|
static int chdlc_send (sdla_t* card, void* data, unsigned len, unsigned char tx_bits)
|
|
{
|
|
ASY_DATA_TX_STATUS_EL_STRUCT txbuf;
|
|
|
|
card->hw_iface.peek(card->hw, card->u.c.txbuf_off, &txbuf, sizeof(txbuf));
|
|
if (txbuf.opp_flag){
|
|
return 1;
|
|
}
|
|
|
|
card->hw_iface.poke(card->hw, txbuf.ptr_data_bfr, data, len);
|
|
|
|
txbuf.data_length = len;
|
|
card->hw_iface.poke(card->hw,
|
|
card->u.c.txbuf_off,
|
|
&txbuf,
|
|
sizeof(txbuf));
|
|
txbuf.opp_flag = 1; /* start transmission */
|
|
card->hw_iface.poke_byte(card->hw,
|
|
card->u.c.txbuf_off+
|
|
offsetof(ASY_DATA_TX_STATUS_EL_STRUCT, opp_flag),
|
|
txbuf.opp_flag);
|
|
|
|
/* Update transmit buffer control fields */
|
|
card->u.c.txbuf_off += sizeof(txbuf);
|
|
if (card->u.c.txbuf_off > card->u.c.txbuf_last_off){
|
|
card->u.c.txbuf_off = card->u.c.txbuf_base_off;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Read TE1/56K Front end registers
|
|
*/
|
|
static unsigned char read_front_end_reg (void* card1, ...)
|
|
{
|
|
va_list args;
|
|
sdla_t *card = (sdla_t*)card1;
|
|
wan_mbox_t *mb = &card->wan_mbox;
|
|
char *data = mb->wan_data;
|
|
u16 reg, line_no;
|
|
int err;
|
|
|
|
va_start(args, card1);
|
|
line_no = (u16)va_arg(args, int);
|
|
reg = (u16)va_arg(args, int);
|
|
va_end(args);
|
|
|
|
((FRONT_END_REG_STRUCT *)data)->register_number = (unsigned short)reg;
|
|
mb->wan_data_len = sizeof(FRONT_END_REG_STRUCT);
|
|
mb->wan_command = READ_FRONT_END_REGISTER;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK){
|
|
chdlc_error(card,err,mb);
|
|
}
|
|
|
|
return(((FRONT_END_REG_STRUCT *)data)->register_value);
|
|
}
|
|
|
|
/*============================================================================
|
|
* Write to TE1/56K Front end registers
|
|
*/
|
|
static int write_front_end_reg (void* card1, ...)
|
|
{
|
|
va_list args;
|
|
sdla_t *card = (sdla_t*)card1;
|
|
wan_mbox_t *mb = &card->wan_mbox;
|
|
char *data = mb->wan_data;
|
|
u16 reg, line_no;
|
|
u8 value;
|
|
int err, retry=15;
|
|
|
|
va_start(args, card1);
|
|
line_no = (u16)va_arg(args, int);
|
|
reg = (u16)va_arg(args, int);
|
|
value = (u8)va_arg(args, int);
|
|
va_end(args);
|
|
|
|
do {
|
|
((FRONT_END_REG_STRUCT *)data)->register_number = (unsigned short)reg;
|
|
((FRONT_END_REG_STRUCT *)data)->register_value = value;
|
|
mb->wan_data_len = sizeof(FRONT_END_REG_STRUCT);
|
|
mb->wan_command = WRITE_FRONT_END_REGISTER;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK){
|
|
chdlc_error(card,err,mb);
|
|
}
|
|
}while(err && --retry);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Enable timer interrupt
|
|
*/
|
|
static void chdlc_enable_timer (void* card_id)
|
|
{
|
|
sdla_t *card = (sdla_t*)card_id;
|
|
netdevice_t *dev;
|
|
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
DEBUG_TEST("%s: Chdlc enabling timer %s\n",card->devname,
|
|
dev ? wan_netif_name(dev) : "No DEV");
|
|
|
|
card->u.c.timer_int_enabled |= TMR_INT_ENABLED_TE;
|
|
card->hw_iface.set_bit(card->hw, card->intr_perm_off, APP_INT_ON_TIMER);
|
|
return;
|
|
}
|
|
|
|
/****** Firmware Error Handler **********************************************/
|
|
|
|
/*============================================================================
|
|
* Firmware error handler.
|
|
* This routine is called whenever firmware command returns non-zero
|
|
* return code.
|
|
*
|
|
* Return zero if previous command has to be cancelled.
|
|
*/
|
|
static int chdlc_error (sdla_t *card, int err, wan_mbox_t *mb)
|
|
{
|
|
unsigned cmd = mb->wan_command;
|
|
|
|
switch (err) {
|
|
|
|
case CMD_TIMEOUT:
|
|
printk(KERN_INFO "%s: command 0x%02X timed out!\n",
|
|
card->devname, cmd);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
|
|
card->devname, cmd, err);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/********** Bottom Half Handlers ********************************************/
|
|
|
|
/* NOTE: There is no API, BH support for Kernels lower than 2.2.X.
|
|
* DO NOT INSERT ANY CODE HERE, NOTICE THE
|
|
* PREPROCESSOR STATEMENT ABOVE, UNLESS YOU KNOW WHAT YOU ARE
|
|
* DOING */
|
|
|
|
static void chdlc_bh (unsigned long data)
|
|
{
|
|
chdlc_private_area_t* chan = (chdlc_private_area_t*)data;
|
|
sdla_t *card = chan->card;
|
|
struct sk_buff *skb;
|
|
int len=0;
|
|
|
|
while ((skb=wan_api_dequeue_skb(chan)) != NULL){
|
|
|
|
len=skb->len;
|
|
if (chan->common.usedby == API){
|
|
if (wan_api_rx(chan,skb) == 0){
|
|
card->wandev.stats.rx_packets++;
|
|
card->wandev.stats.rx_bytes += len;
|
|
}else{
|
|
++card->wandev.stats.rx_dropped;
|
|
wan_skb_free(skb);
|
|
}
|
|
}else{
|
|
wan_skb_free(skb);
|
|
++card->wandev.stats.rx_dropped;
|
|
}
|
|
}
|
|
|
|
WAN_TASKLET_END((&chan->common.bh_task));
|
|
|
|
return;
|
|
}
|
|
|
|
/* END OF API BH Support */
|
|
|
|
|
|
/****** Interrupt Handlers **************************************************/
|
|
|
|
/*============================================================================
|
|
* Cisco HDLC interrupt service routine.
|
|
*/
|
|
static WAN_IRQ_RETVAL wpc_isr (sdla_t* card)
|
|
{
|
|
netdevice_t* dev;
|
|
SHARED_MEMORY_INFO_STRUCT flags;
|
|
int i;
|
|
WAN_IRQ_RETVAL_DECL(irq_ret);
|
|
|
|
|
|
WAN_IRQ_RETVAL_SET(irq_ret, WAN_IRQ_HANDLED);
|
|
/* Check for which port the interrupt has been generated
|
|
* Since Secondary Port is piggybacking on the Primary
|
|
* the check must be done here.
|
|
*/
|
|
|
|
if (!card->hw){
|
|
WAN_IRQ_RETURN(irq_ret);
|
|
}
|
|
|
|
card->hw_iface.peek(card->hw, card->flags_off,
|
|
&flags, sizeof(flags));
|
|
|
|
/* Start card isr critical area */
|
|
set_bit(0,&card->in_isr);
|
|
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
|
|
/* If we get an interrupt with no network device, stop the interrupts
|
|
* and issue an error */
|
|
if (!card->tty_opt && !dev &&
|
|
flags.interrupt_info_struct.interrupt_type !=
|
|
COMMAND_COMPLETE_APP_INT_PEND){
|
|
WAN_IRQ_RETURN(irq_ret);
|
|
goto isr_done;
|
|
}
|
|
|
|
/* if critical due to peripheral operations
|
|
* ie. update() or getstats() then reset the interrupt and
|
|
* wait for the board to retrigger.
|
|
*/
|
|
if(test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
|
|
printk(KERN_INFO "%s: Chdlc ISR: Critical with PERI_CRIT!\n",
|
|
card->devname);
|
|
WAN_IRQ_RETVAL_SET(irq_ret, WAN_IRQ_HANDLED);
|
|
goto isr_done;
|
|
}
|
|
|
|
/* On a 508 Card, if critical due to if_send
|
|
* Major Error !!! */
|
|
if(card->type != SDLA_S514) {
|
|
if(test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
|
|
printk(KERN_INFO "%s: Chdlc ISR: Critical with SEND_CRIT!\n",
|
|
card->devname);
|
|
card->in_isr = 0;
|
|
card->hw_iface.poke_byte(card->hw, card->intr_type_off, 0x00);
|
|
WAN_IRQ_RETVAL_SET(irq_ret, WAN_IRQ_HANDLED);
|
|
WAN_IRQ_RETURN(irq_ret);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
switch(flags.interrupt_info_struct.interrupt_type){
|
|
|
|
case RX_APP_INT_PEND: /* 0x01: receive interrupt */
|
|
rx_intr(card);
|
|
break;
|
|
|
|
case TX_APP_INT_PEND: /* 0x02: transmit interrupt */
|
|
card->hw_iface.clear_bit(card->hw, card->intr_perm_off, APP_INT_ON_TX);
|
|
|
|
if (dev && is_queue_stopped(dev)){
|
|
chdlc_private_area_t* chdlc_priv_area=dev->priv;
|
|
|
|
if (chdlc_priv_area->common.usedby == API){
|
|
start_net_queue(dev);
|
|
wan_wakeup_api(chdlc_priv_area);
|
|
}else{
|
|
wake_net_dev(dev);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case COMMAND_COMPLETE_APP_INT_PEND:/* 0x04: cmd cplt */
|
|
++ card->timer_int_enabled;
|
|
break;
|
|
|
|
case GLOBAL_EXCEP_COND_APP_INT_PEND:
|
|
process_global_exception(card);
|
|
|
|
/* Reset the 56k or T1/E1 front end exception condition */
|
|
if(IS_56K_CARD(card) || IS_TE1_CARD(card)) {
|
|
FRONT_END_STATUS_STRUCT FE_status;
|
|
|
|
card->hw_iface.peek(card->hw,
|
|
card->fe_status_off,
|
|
&FE_status,
|
|
sizeof(FE_status));
|
|
FE_status.opp_flag = 0x01;
|
|
card->hw_iface.poke(card->hw,
|
|
card->fe_status_off,
|
|
&FE_status,
|
|
sizeof(FE_status));
|
|
}
|
|
break;
|
|
|
|
case TIMER_APP_INT_PEND:
|
|
timer_intr(card);
|
|
break;
|
|
|
|
default:
|
|
|
|
if (card->next){
|
|
set_bit(0,&card->spurious);
|
|
}else{
|
|
printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
|
|
card->devname,
|
|
flags.interrupt_info_struct.interrupt_type);
|
|
printk(KERN_INFO "Code name: ");
|
|
for(i = 0; i < 4; i ++){
|
|
printk("%c",
|
|
flags.global_info_struct.code_name[i]);
|
|
}
|
|
printk("\n");
|
|
printk(KERN_INFO "Code version: ");
|
|
for(i = 0; i < 4; i ++){
|
|
printk("%c",
|
|
flags.global_info_struct.code_version[i]);
|
|
}
|
|
printk("\n");
|
|
}
|
|
break;
|
|
}
|
|
|
|
isr_done:
|
|
|
|
card->in_isr = 0;
|
|
card->hw_iface.poke_byte(card->hw, card->intr_type_off, 0x00);
|
|
|
|
WAN_IRQ_RETVAL_SET(irq_ret, WAN_IRQ_HANDLED);
|
|
WAN_IRQ_RETURN(irq_ret);
|
|
}
|
|
|
|
/*============================================================================
|
|
* Receive interrupt handler.
|
|
*/
|
|
static void rx_intr (sdla_t* card)
|
|
{
|
|
netdevice_t *dev;
|
|
chdlc_private_area_t *chdlc_priv_area;
|
|
SHARED_MEMORY_INFO_STRUCT flags;
|
|
ASY_DATA_RX_STATUS_EL_STRUCT rxbuf;
|
|
struct sk_buff *skb;
|
|
unsigned addr;
|
|
unsigned len;
|
|
void *buf;
|
|
int i,udp_type;
|
|
|
|
card->hw_iface.peek(card->hw, card->flags_off, &flags, sizeof(flags));
|
|
card->hw_iface.peek(card->hw, card->u.c.rxmb_off, &rxbuf, sizeof(rxbuf));
|
|
addr = rxbuf.ptr_data_bfr;
|
|
if (rxbuf.opp_flag != 0x01) {
|
|
printk(KERN_INFO
|
|
"%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
|
|
card->devname, (unsigned)card->u.c.rxmb_off, rxbuf.opp_flag);
|
|
printk(KERN_INFO "Code name: ");
|
|
for(i = 0; i < 4; i ++)
|
|
printk(KERN_INFO "%c",
|
|
flags.global_info_struct.code_name[i]);
|
|
printk(KERN_INFO "\n");
|
|
printk(KERN_INFO "Code version: ");
|
|
for(i = 0; i < 4; i ++)
|
|
printk(KERN_INFO "%c",
|
|
flags.global_info_struct.code_version[i]);
|
|
printk(KERN_INFO "\n");
|
|
|
|
/* Bug Fix: Mar 6 2000
|
|
* If we get a corrupted mailbox, it measn that driver
|
|
* is out of sync with the firmware. There is no recovery.
|
|
* If we don't turn off all interrupts for this card
|
|
* the machine will crash.
|
|
*/
|
|
printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
|
|
printk(KERN_INFO "Please contact Sangoma Technologies !\n");
|
|
chdlc_set_intr_mode(card,0);
|
|
return;
|
|
}
|
|
|
|
len = rxbuf.data_length;
|
|
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
if (!dev || !wan_netif_priv(dev))
|
|
goto rx_exit;
|
|
|
|
if (!is_dev_running(dev))
|
|
goto rx_exit;
|
|
|
|
chdlc_priv_area = wan_netif_priv(dev);
|
|
|
|
if (chdlc_priv_area->common.usedby == ANNEXG){
|
|
|
|
/* Take off two CRC bytes */
|
|
if (rxbuf.data_length <= 2 || rxbuf.data_length > 1506 ){
|
|
printk(KERN_INFO "Bad Rx Frame Length %i\n",
|
|
rxbuf.data_length);
|
|
goto rx_exit;
|
|
}
|
|
len = rxbuf.data_length - CRC_LENGTH;
|
|
}
|
|
|
|
/* Allocate socket buffer */
|
|
skb = dev_alloc_skb(len+2);
|
|
|
|
if (skb == NULL) {
|
|
printk(KERN_INFO "%s: no socket buffers available!\n",
|
|
card->devname);
|
|
++card->wandev.stats.rx_dropped;
|
|
goto rx_exit;
|
|
}
|
|
|
|
/* Align IP on 16 byte */
|
|
skb_reserve(skb,2);
|
|
|
|
/* Copy data to the socket buffer */
|
|
if((addr + len) > card->u.c.rx_top_off + 1) {
|
|
unsigned tmp = card->u.c.rx_top_off - addr + 1;
|
|
buf = skb_put(skb, tmp);
|
|
card->hw_iface.peek(card->hw, addr, buf, tmp);
|
|
addr = card->u.c.rx_base_off;
|
|
len -= tmp;
|
|
}
|
|
|
|
buf = skb_put(skb, len);
|
|
card->hw_iface.peek(card->hw, addr, buf, len);
|
|
|
|
skb->protocol = htons(ETH_P_IP);
|
|
|
|
udp_type = udp_pkt_type( skb, card );
|
|
|
|
if(udp_type == UDP_CPIPE_TYPE) {
|
|
if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK,
|
|
card, skb, dev, chdlc_priv_area)) {
|
|
card->hw_iface.set_bit(card->hw, card->intr_perm_off, APP_INT_ON_TIMER);
|
|
}
|
|
|
|
} else if(chdlc_priv_area->common.usedby == API) {
|
|
|
|
api_rx_hdr_t* api_rx_hdr;
|
|
skb_push(skb, sizeof(api_rx_hdr_t));
|
|
api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00];
|
|
api_rx_hdr->error_flag=0;
|
|
api_rx_hdr->time_stamp = rxbuf.time_stamp;
|
|
|
|
skb->protocol = htons(WP_PVC_PROT);
|
|
wan_skb_reset_mac_header(skb);
|
|
skb->dev = dev;
|
|
skb->pkt_type = WAN_PACKET_DATA;
|
|
|
|
if (wan_api_enqueue_skb(chdlc_priv_area,skb) < 0){
|
|
wan_skb_free(skb);
|
|
++card->wandev.stats.rx_dropped;
|
|
goto rx_exit;
|
|
}
|
|
|
|
WAN_TASKLET_SCHEDULE(&chdlc_priv_area->common.bh_task);
|
|
|
|
} else if (chdlc_priv_area->common.usedby == ANNEXG){
|
|
|
|
if (chdlc_priv_area->annexg_dev){
|
|
skb->protocol = htons(ETH_P_X25);
|
|
skb->dev = chdlc_priv_area->annexg_dev;
|
|
wan_skb_reset_mac_header(skb);
|
|
|
|
if (wan_api_enqueue_skb(chdlc_priv_area,skb) < 0){
|
|
wan_skb_free(skb);
|
|
++card->wandev.stats.rx_dropped;
|
|
goto rx_exit;
|
|
}
|
|
|
|
WAN_TASKLET_SCHEDULE(&chdlc_priv_area->common.bh_task);
|
|
|
|
}else{
|
|
wan_skb_free(skb);
|
|
++card->wandev.stats.rx_errors;
|
|
}
|
|
|
|
}else if (chdlc_priv_area->common.usedby == BRIDGE ||
|
|
chdlc_priv_area->common.usedby == BRIDGE_NODE){
|
|
|
|
/* Make sure it's an Ethernet frame, otherwise drop it */
|
|
if (skb->len <= ETH_ALEN) {
|
|
wan_skb_free(skb);
|
|
++card->wandev.stats.rx_errors;
|
|
goto rx_exit;
|
|
}
|
|
|
|
card->wandev.stats.rx_packets ++;
|
|
card->wandev.stats.rx_bytes += skb->len;
|
|
|
|
skb->dev = dev;
|
|
skb->protocol=eth_type_trans(skb,dev);
|
|
netif_rx(skb);
|
|
}else{
|
|
/* FIXME: we should check to see if the received packet is a
|
|
multicast packet so that we can increment the multicast
|
|
statistic
|
|
++ chdlc_priv_area->if_stats.multicast;
|
|
*/
|
|
/* Pass it up the protocol stack */
|
|
|
|
card->wandev.stats.rx_packets ++;
|
|
card->wandev.stats.rx_bytes += skb->len;
|
|
|
|
skb->protocol = htons(ETH_P_IP);
|
|
skb->dev = dev;
|
|
wan_skb_reset_mac_header(skb);
|
|
netif_rx(skb);
|
|
}
|
|
|
|
rx_exit:
|
|
/* Release buffer element and calculate a pointer to the next one */
|
|
rxbuf.opp_flag = 0x00;
|
|
card->hw_iface.poke_byte(card->hw,
|
|
card->u.c.rxmb_off+offsetof(ASY_DATA_RX_STATUS_EL_STRUCT, opp_flag),
|
|
rxbuf.opp_flag);
|
|
card->u.c.rxmb_off += sizeof(rxbuf);
|
|
if (card->u.c.rxmb_off > card->u.c.rxbuf_last_off){
|
|
card->u.c.rxmb_off = card->u.c.rxbuf_base_off;
|
|
}
|
|
}
|
|
|
|
/*============================================================================
|
|
* Timer interrupt handler.
|
|
* The timer interrupt is used for two purposes:
|
|
* 1) Processing udp calls from 'cpipemon'.
|
|
* 2) Reading board-level statistics for updating the proc file system.
|
|
*/
|
|
void timer_intr(sdla_t *card)
|
|
{
|
|
netdevice_t* dev=NULL;
|
|
chdlc_private_area_t* chdlc_priv_area = NULL;
|
|
/* TE timer interrupt */
|
|
if (card->u.c.timer_int_enabled & TMR_INT_ENABLED_TE) {
|
|
card->wandev.fe_iface.polling(&card->fe);
|
|
card->u.c.timer_int_enabled &= ~TMR_INT_ENABLED_TE;
|
|
}
|
|
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
if (!dev || !wan_netif_priv(dev)){
|
|
goto timer_isr_exit;
|
|
}
|
|
|
|
chdlc_priv_area = dev->priv;
|
|
|
|
/* Configure hardware */
|
|
if (card->u.c.timer_int_enabled & TMR_INT_ENABLED_CONFIG) {
|
|
config_chdlc(card, dev);
|
|
card->u.c.timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
|
|
}
|
|
|
|
/* process a udp call if pending */
|
|
if(card->u.c.timer_int_enabled & TMR_INT_ENABLED_UDP) {
|
|
process_udp_mgmt_pkt(card, dev,
|
|
chdlc_priv_area,0);
|
|
card->u.c.timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
|
|
}
|
|
|
|
/* read the communications statistics if required */
|
|
if(card->u.c.timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
|
|
update_comms_stats(card, chdlc_priv_area);
|
|
if(!(-- chdlc_priv_area->update_comms_stats)) {
|
|
card->u.c.timer_int_enabled &=
|
|
~TMR_INT_ENABLED_UPDATE;
|
|
}
|
|
}
|
|
|
|
timer_isr_exit:
|
|
|
|
/* only disable the timer interrupt if there are no udp or statistic */
|
|
/* updates pending */
|
|
if(!card->u.c.timer_int_enabled) {
|
|
card->hw_iface.clear_bit(card->hw, card->intr_perm_off, APP_INT_ON_TIMER);
|
|
}
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
set_asy_config() used to set asynchronous configuration options on the board
|
|
------------------------------------------------------------------------------*/
|
|
|
|
static int set_asy_config(sdla_t* card)
|
|
{
|
|
|
|
ASY_CONFIGURATION_STRUCT cfg;
|
|
wan_mbox_t *mb = &card->wan_mbox;
|
|
int err;
|
|
|
|
memset(&cfg, 0, sizeof(ASY_CONFIGURATION_STRUCT));
|
|
|
|
if(card->wandev.clocking)
|
|
cfg.baud_rate = card->wandev.bps;
|
|
|
|
cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
|
|
INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
|
|
|
|
cfg.modem_config_options = 0;
|
|
cfg.API_options = card->u.c.api_options;
|
|
cfg.protocol_options = card->u.c.protocol_options;
|
|
cfg.Tx_bits_per_char = card->u.c.tx_bits_per_char;
|
|
cfg.Rx_bits_per_char = card->u.c.rx_bits_per_char;
|
|
cfg.stop_bits = card->u.c.stop_bits;
|
|
cfg.parity = card->u.c.parity;
|
|
cfg.break_timer = card->u.c.break_timer;
|
|
cfg.Rx_inter_char_timer = card->u.c.inter_char_timer;
|
|
cfg.Rx_complete_length = card->u.c.rx_complete_length;
|
|
cfg.XON_char = card->u.c.xon_char;
|
|
cfg.XOFF_char = card->u.c.xoff_char;
|
|
cfg.statistics_options = 0x001F;
|
|
|
|
mb->wan_data_len = sizeof(ASY_CONFIGURATION_STRUCT);
|
|
memcpy(mb->wan_data, &cfg, mb->wan_data_len);
|
|
mb->wan_command = SET_ASY_CONFIGURATION;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK)
|
|
chdlc_error (card, err, mb);
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Enable asynchronous communications.
|
|
*/
|
|
|
|
static int asy_comm_enable (sdla_t* card)
|
|
{
|
|
netdevice_t *dev;
|
|
int err;
|
|
wan_mbox_t *mb = &card->wan_mbox;
|
|
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
if (dev == NULL){
|
|
return -EINVAL;
|
|
}
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = ENABLE_ASY_COMMUNICATIONS;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK && dev)
|
|
chdlc_error(card, err, mb);
|
|
|
|
if (!err)
|
|
card->u.c.comm_enabled = 1;
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Process global exception condition
|
|
*/
|
|
static int process_global_exception(sdla_t *card)
|
|
{
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
int err;
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = READ_GLOBAL_EXCEPTION_CONDITION;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
|
|
if(err != CMD_TIMEOUT ){
|
|
|
|
switch(mb->wan_return_code) {
|
|
|
|
case EXCEP_MODEM_STATUS_CHANGE:
|
|
|
|
if (IS_56K_CARD(card)) {
|
|
|
|
FRONT_END_STATUS_STRUCT FE_status;
|
|
|
|
card->hw_iface.peek(card->hw,
|
|
card->fe_status_off,
|
|
&FE_status,
|
|
sizeof(FE_status));
|
|
|
|
card->fe.fe_param.k56_param.RR8_reg_56k =
|
|
FE_status.FE_U.stat_56k.RR8_56k;
|
|
card->fe.fe_param.k56_param.RRA_reg_56k =
|
|
FE_status.FE_U.stat_56k.RRA_56k;
|
|
card->fe.fe_param.k56_param.RRC_reg_56k =
|
|
FE_status.FE_U.stat_56k.RRC_56k;
|
|
card->wandev.fe_iface.read_alarm(&card->fe, 0);
|
|
|
|
chdlc_handle_front_end_state(card);
|
|
break;
|
|
|
|
}
|
|
|
|
if (IS_TE1_CARD(card)) {
|
|
/* TE1 T1/E1 interrupt */
|
|
card->wandev.fe_iface.isr(&card->fe);
|
|
chdlc_handle_front_end_state(card);
|
|
break;
|
|
}
|
|
|
|
if ((mb->wan_data[0] & (DCD_HIGH | CTS_HIGH)) == (DCD_HIGH | CTS_HIGH)){
|
|
card->fe.fe_status = FE_CONNECTED;
|
|
}else{
|
|
card->fe.fe_status = FE_DISCONNECTED;
|
|
}
|
|
|
|
printk(KERN_INFO "%s: Modem status change\n",
|
|
card->devname);
|
|
|
|
switch(mb->wan_data[0] & (DCD_HIGH | CTS_HIGH)) {
|
|
|
|
case ((DCD_HIGH | CTS_HIGH)):
|
|
printk(KERN_INFO "%s: DCD high, CTS high\n",card->devname);
|
|
break;
|
|
|
|
case (DCD_HIGH):
|
|
printk(KERN_INFO "%s: DCD high, CTS low\n",card->devname);
|
|
break;
|
|
|
|
case (CTS_HIGH):
|
|
printk(KERN_INFO "%s: DCD low, CTS high\n",card->devname);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: DCD low, CTS low\n",card->devname);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: Global exception %x\n",
|
|
card->devname, mb->wan_return_code);
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* if_do_ioctl - Ioctl handler for fr
|
|
* @dev: Device subject to ioctl
|
|
* @ifr: Interface request block from the user
|
|
* @cmd: Command that is being issued
|
|
*
|
|
* This function handles the ioctls that may be issued by the user
|
|
* to control the settings of a FR. It does both busy
|
|
* and security checks. This function is intended to be wrapped by
|
|
* callers who wish to add additional ioctl calls of their own.
|
|
*/
|
|
/* SNMP */
|
|
static int if_do_ioctl(netdevice_t *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
chdlc_private_area_t* chan= (chdlc_private_area_t*)dev->priv;
|
|
unsigned long smp_flags;
|
|
sdla_t *card;
|
|
wan_udp_pkt_t *wan_udp_pkt;
|
|
int err=0;
|
|
|
|
if (!chan){
|
|
return -ENODEV;
|
|
}
|
|
card=chan->card;
|
|
|
|
NET_ADMIN_CHECK();
|
|
|
|
switch(cmd)
|
|
{
|
|
|
|
case SIOC_WANPIPE_BIND_SK:
|
|
if (!ifr){
|
|
err= -EINVAL;
|
|
break;
|
|
}
|
|
|
|
spin_lock_irqsave(&card->wandev.lock,smp_flags);
|
|
err=wan_bind_api_to_svc(chan,ifr->ifr_data);
|
|
spin_unlock_irqrestore(&card->wandev.lock,smp_flags);
|
|
break;
|
|
|
|
case SIOC_WANPIPE_UNBIND_SK:
|
|
if (!ifr){
|
|
err= -EINVAL;
|
|
break;
|
|
}
|
|
|
|
spin_lock_irqsave(&card->wandev.lock,smp_flags);
|
|
err=wan_unbind_api_from_svc(chan,ifr->ifr_data);
|
|
spin_unlock_irqrestore(&card->wandev.lock,smp_flags);
|
|
break;
|
|
|
|
case SIOC_WANPIPE_CHECK_TX:
|
|
case SIOC_ANNEXG_CHECK_TX:
|
|
err=0;
|
|
break;
|
|
|
|
case SIOC_WANPIPE_DEV_STATE:
|
|
err = chan->common.state;
|
|
break;
|
|
|
|
case SIOC_ANNEXG_KICK:
|
|
err=0;
|
|
break;
|
|
|
|
case SIOC_ASYHDLC_RX_AVAIL_CMD:
|
|
{
|
|
SHARED_MEMORY_INFO_STRUCT flags;
|
|
card->hw_iface.peek(card->hw, card->flags_off, &flags, sizeof(flags));
|
|
if (flags.async_info_struct.asy_rx_avail){
|
|
err=HDLC_RX_IN_PROCESS;
|
|
}else{
|
|
err=NO_HDLC_RX_IN_PROCESS;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SIOC_WANPIPE_PIPEMON:
|
|
|
|
if (atomic_read(&chan->udp_pkt_len) != 0){
|
|
return -EBUSY;
|
|
}
|
|
|
|
atomic_set(&chan->udp_pkt_len,MAX_LGTH_UDP_MGNT_PKT);
|
|
|
|
/* For performance reasons test the critical
|
|
* here before spin lock */
|
|
if (test_bit(0,&card->in_isr)){
|
|
atomic_set(&chan->udp_pkt_len,0);
|
|
return -EBUSY;
|
|
}
|
|
|
|
|
|
wan_udp_pkt=(wan_udp_pkt_t*)chan->udp_pkt_data;
|
|
if (copy_from_user(&wan_udp_pkt->wan_udp_hdr,ifr->ifr_data,sizeof(wan_udp_hdr_t))){
|
|
atomic_set(&chan->udp_pkt_len,0);
|
|
return -EFAULT;
|
|
}
|
|
|
|
spin_lock_irqsave(&card->wandev.lock, smp_flags);
|
|
|
|
/* We have to check here again because we don't know
|
|
* what happened during spin_lock */
|
|
if (test_bit(0,&card->in_isr)) {
|
|
printk(KERN_INFO "%s:%s Pipemon command failed, Driver busy: try again.\n",
|
|
card->devname,dev->name);
|
|
atomic_set(&chan->udp_pkt_len,0);
|
|
spin_unlock_irqrestore(&card->wandev.lock, smp_flags);
|
|
return -EBUSY;
|
|
}
|
|
|
|
process_udp_mgmt_pkt(card,dev,chan,1);
|
|
|
|
spin_unlock_irqrestore(&card->wandev.lock, smp_flags);
|
|
|
|
/* This area will still be critical to other
|
|
* PIPEMON commands due to udp_pkt_len
|
|
* thus we can release the irq */
|
|
|
|
if (atomic_read(&chan->udp_pkt_len) > sizeof(wan_udp_pkt_t)){
|
|
printk(KERN_INFO "%s: Error: Pipemon buf too bit on the way up! %i\n",
|
|
card->devname,atomic_read(&chan->udp_pkt_len));
|
|
atomic_set(&chan->udp_pkt_len,0);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (copy_to_user(ifr->ifr_data,&wan_udp_pkt->wan_udp_hdr,sizeof(wan_udp_hdr_t))){
|
|
atomic_set(&chan->udp_pkt_len,0);
|
|
return -EFAULT;
|
|
}
|
|
|
|
atomic_set(&chan->udp_pkt_len,0);
|
|
return 0;
|
|
|
|
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
|
|
|
|
/*=============================================================================
|
|
* Store a UDP management packet for later processing.
|
|
*/
|
|
|
|
static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
|
|
struct sk_buff *skb, netdevice_t* dev,
|
|
chdlc_private_area_t* chdlc_priv_area )
|
|
{
|
|
int udp_pkt_stored = 0;
|
|
|
|
if(!atomic_read(&chdlc_priv_area->udp_pkt_len) &&
|
|
(skb->len <= MAX_LGTH_UDP_MGNT_PKT)) {
|
|
atomic_set(&chdlc_priv_area->udp_pkt_len, skb->len);
|
|
chdlc_priv_area->udp_pkt_src = udp_pkt_src;
|
|
memcpy(chdlc_priv_area->udp_pkt_data, skb->data, skb->len);
|
|
card->u.c.timer_int_enabled = TMR_INT_ENABLED_UDP;
|
|
udp_pkt_stored = 1;
|
|
}
|
|
|
|
wan_skb_free(skb);
|
|
|
|
return(udp_pkt_stored);
|
|
}
|
|
|
|
|
|
/*=============================================================================
|
|
* Process UDP management packet.
|
|
*/
|
|
|
|
static int process_udp_mgmt_pkt(sdla_t* card, netdevice_t* dev,
|
|
chdlc_private_area_t* chdlc_priv_area, int local_dev )
|
|
{
|
|
unsigned char *buf;
|
|
unsigned int len;
|
|
struct sk_buff *new_skb;
|
|
int udp_mgmt_req_valid = 1;
|
|
SHARED_MEMORY_INFO_STRUCT flags;
|
|
wan_mbox_t *mb = &card->wan_mbox;
|
|
wan_udp_pkt_t *wan_udp_pkt;
|
|
struct timeval tv;
|
|
int err;
|
|
|
|
wan_udp_pkt = (wan_udp_pkt_t *) chdlc_priv_area->udp_pkt_data;
|
|
|
|
if (!local_dev){
|
|
|
|
if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK){
|
|
|
|
/* Only these commands are support for remote debugging.
|
|
* All others are not */
|
|
switch(wan_udp_pkt->wan_udp_command) {
|
|
|
|
case READ_GLOBAL_STATISTICS:
|
|
case READ_MODEM_STATUS:
|
|
case CPIPE_ROUTER_UP_TIME:
|
|
case READ_COMMS_ERROR_STATS:
|
|
case READ_ASY_OPERATIONAL_STATS:
|
|
/* These two commands are executed for
|
|
* each request */
|
|
case READ_ASY_CONFIGURATION:
|
|
case READ_ASY_CODE_VERSION:
|
|
case WAN_GET_MEDIA_TYPE:
|
|
case WAN_FE_GET_CFG:
|
|
case WAN_FE_GET_STAT:
|
|
case WAN_GET_PROTOCOL:
|
|
case WAN_GET_PLATFORM:
|
|
udp_mgmt_req_valid = 1;
|
|
break;
|
|
default:
|
|
udp_mgmt_req_valid = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!udp_mgmt_req_valid) {
|
|
|
|
/* set length to 0 */
|
|
wan_udp_pkt->wan_udp_data_len = 0;
|
|
|
|
/* set return code */
|
|
wan_udp_pkt->wan_udp_return_code = 0xCD;
|
|
|
|
if (net_ratelimit()){
|
|
printk(KERN_INFO
|
|
"%s: Warning, Illegal UDP command attempted from network: %x\n",
|
|
card->devname,wan_udp_pkt->wan_udp_command);
|
|
}
|
|
|
|
} else {
|
|
wan_udp_pkt->wan_udp_opp_flag = 0;
|
|
|
|
switch(wan_udp_pkt->wan_udp_command) {
|
|
|
|
case CPIPE_FT1_READ_STATUS:
|
|
card->hw_iface.peek(card->hw, card->flags_off, &flags, sizeof(flags));
|
|
((unsigned char *)wan_udp_pkt->wan_udp_data )[0] =
|
|
flags.FT1_info_struct.parallel_port_A_input;
|
|
|
|
((unsigned char *)wan_udp_pkt->wan_udp_data )[1] =
|
|
flags.FT1_info_struct.parallel_port_B_input;
|
|
wan_udp_pkt->wan_udp_return_code = COMMAND_OK;
|
|
wan_udp_pkt->wan_udp_data_len = 2;
|
|
mb->wan_data_len = 2;
|
|
break;
|
|
|
|
case CPIPE_ROUTER_UP_TIME:
|
|
do_gettimeofday( &tv );
|
|
chdlc_priv_area->router_up_time = tv.tv_sec -
|
|
chdlc_priv_area->router_start_time;
|
|
*(unsigned long *)&wan_udp_pkt->wan_udp_data =
|
|
chdlc_priv_area->router_up_time;
|
|
mb->wan_data_len = sizeof(unsigned long);
|
|
wan_udp_pkt->wan_udp_data_len = sizeof(unsigned long);
|
|
wan_udp_pkt->wan_udp_return_code = COMMAND_OK;
|
|
break;
|
|
|
|
case WAN_GET_MEDIA_TYPE:
|
|
case WAN_FE_GET_STAT:
|
|
case WAN_FE_SET_LB_MODE:
|
|
case WAN_FE_FLUSH_PMON:
|
|
case WAN_FE_GET_CFG:
|
|
if (IS_TE1_CARD(card)){
|
|
card->wandev.fe_iface.process_udp(
|
|
&card->fe,
|
|
&wan_udp_pkt->wan_udp_cmd,
|
|
&wan_udp_pkt->wan_udp_data[0]);
|
|
}else if (IS_56K_CARD(card)){
|
|
card->wandev.fe_iface.process_udp(
|
|
&card->fe,
|
|
&wan_udp_pkt->wan_udp_cmd,
|
|
&wan_udp_pkt->wan_udp_data[0]);
|
|
}else{
|
|
if (wan_udp_pkt->wan_udp_command == WAN_GET_MEDIA_TYPE){
|
|
wan_udp_pkt->wan_udp_data_len = sizeof(unsigned char);
|
|
wan_udp_pkt->wan_udp_return_code = CMD_OK;
|
|
}else{
|
|
wan_udp_pkt->wan_udp_return_code = WAN_UDP_INVALID_CMD;
|
|
}
|
|
}
|
|
mb->wan_data_len = wan_udp_pkt->wan_udp_data_len;
|
|
break;
|
|
|
|
case WAN_GET_PROTOCOL:
|
|
wan_udp_pkt->wan_udp_chdlc_num_frames = card->wandev.config_id;
|
|
wan_udp_pkt->wan_udp_return_code = CMD_OK;
|
|
mb->wan_data_len = wan_udp_pkt->wan_udp_data_len = 1;
|
|
break;
|
|
|
|
case WAN_GET_PLATFORM:
|
|
wan_udp_pkt->wan_udp_data[0] = WAN_LINUX_PLATFORM;
|
|
wan_udp_pkt->wan_udp_return_code = CMD_OK;
|
|
mb->wan_data_len = wan_udp_pkt->wan_udp_data_len = 1;
|
|
break;
|
|
|
|
default:
|
|
/* it's a board command */
|
|
mb->wan_command = wan_udp_pkt->wan_udp_command;
|
|
mb->wan_data_len = wan_udp_pkt->wan_udp_data_len;
|
|
if (mb->wan_data_len) {
|
|
memcpy(&mb->wan_data, (unsigned char *) wan_udp_pkt->
|
|
wan_udp_data, mb->wan_data_len);
|
|
}
|
|
|
|
/* run the command on the board */
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != COMMAND_OK) {
|
|
chdlc_error(card,err,mb);
|
|
wan_udp_pkt->wan_udp_return_code = mb->wan_return_code;
|
|
break;
|
|
}
|
|
|
|
/* copy the result back to our buffer */
|
|
memcpy(&wan_udp_pkt->wan_udp_hdr.wan_cmd, mb, sizeof(wan_cmd_t));
|
|
|
|
if (mb->wan_data_len) {
|
|
memcpy(&wan_udp_pkt->wan_udp_data, &mb->wan_data,
|
|
mb->wan_data_len);
|
|
}
|
|
|
|
} /* end of switch */
|
|
} /* end of else */
|
|
|
|
/* Fill UDP TTL */
|
|
wan_udp_pkt->wan_ip_ttl= card->wandev.ttl;
|
|
|
|
if (local_dev){
|
|
wan_udp_pkt->wan_udp_request_reply = UDPMGMT_REPLY;
|
|
return 1;
|
|
}
|
|
|
|
len = reply_udp(chdlc_priv_area->udp_pkt_data, mb->wan_data_len);
|
|
|
|
if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK){
|
|
|
|
/* Must check if we interrupted if_send() routine. The
|
|
* tx buffers might be used. If so drop the packet */
|
|
if (!test_bit(SEND_CRIT,&card->wandev.critical)) {
|
|
|
|
if(!chdlc_send(card, chdlc_priv_area->udp_pkt_data, len, 0)) {
|
|
++ card->wandev.stats.tx_packets;
|
|
card->wandev.stats.tx_bytes += len;
|
|
}
|
|
}
|
|
} else {
|
|
|
|
/* Pass it up the stack
|
|
Allocate socket buffer */
|
|
if ((new_skb = dev_alloc_skb(len)) != NULL) {
|
|
/* copy data into new_skb */
|
|
|
|
buf = skb_put(new_skb, len);
|
|
memcpy(buf, chdlc_priv_area->udp_pkt_data, len);
|
|
|
|
/* Decapsulate pkt and pass it up the protocol stack */
|
|
new_skb->protocol = htons(ETH_P_IP);
|
|
new_skb->dev = dev;
|
|
wan_skb_reset_mac_header(new_skb);
|
|
|
|
netif_rx(new_skb);
|
|
} else {
|
|
|
|
printk(KERN_INFO "%s: no socket buffers available!\n",
|
|
card->devname);
|
|
}
|
|
}
|
|
|
|
atomic_set(&chdlc_priv_area->udp_pkt_len,0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Initialize Receive and Transmit Buffers.
|
|
*/
|
|
|
|
static void init_chdlc_tx_rx_buff( sdla_t* card)
|
|
{
|
|
wan_mbox_t *mb = &card->wan_mbox;
|
|
unsigned long tx_config_off;
|
|
unsigned long rx_config_off;
|
|
ASY_TX_STATUS_EL_CFG_STRUCT tx_config;
|
|
ASY_RX_STATUS_EL_CFG_STRUCT rx_config;
|
|
char err;
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = READ_ASY_CONFIGURATION;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
|
|
if(err != COMMAND_OK) {
|
|
netdevice_t *dev;
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
if (dev){
|
|
chdlc_error(card,err,mb);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* ALEX: Apr 8 2004 SANGOMA ISA CARD */
|
|
tx_config_off =
|
|
((ASY_CONFIGURATION_STRUCT *)mb->wan_data)->
|
|
ptr_asy_Tx_stat_el_cfg_struct;
|
|
rx_config_off =
|
|
((ASY_CONFIGURATION_STRUCT *)mb->wan_data)->
|
|
ptr_asy_Rx_stat_el_cfg_struct;
|
|
/* Setup Head and Tails for buffers */
|
|
card->hw_iface.peek(card->hw, tx_config_off, &tx_config, sizeof(tx_config));
|
|
card->u.c.txbuf_base_off = tx_config.base_addr_Tx_status_elements;
|
|
card->u.c.txbuf_last_off =
|
|
card->u.c.txbuf_base_off +
|
|
(tx_config.number_Tx_status_elements - 1) *
|
|
sizeof(ASY_DATA_TX_STATUS_EL_STRUCT);
|
|
card->hw_iface.peek(card->hw, rx_config_off, &rx_config, sizeof(rx_config));
|
|
card->u.c.rxbuf_base_off =
|
|
rx_config.base_addr_Rx_status_elements;
|
|
card->u.c.rxbuf_last_off =
|
|
card->u.c.rxbuf_base_off +
|
|
(rx_config.number_Rx_status_elements - 1) *
|
|
sizeof(ASY_DATA_RX_STATUS_EL_STRUCT);
|
|
/* Set up next pointer to be used */
|
|
card->u.c.txbuf_off = tx_config.next_Tx_status_element_to_use;
|
|
card->u.c.rxmb_off =
|
|
rx_config.next_Rx_status_element_to_use;
|
|
|
|
/* Setup Actual Buffer Start and end addresses */
|
|
card->u.c.rx_base_off = rx_config.base_addr_Rx_buffer;
|
|
card->u.c.rx_top_off = rx_config.end_addr_Rx_buffer;
|
|
|
|
}
|
|
|
|
/*=============================================================================
|
|
* Perform Interrupt Test by running READ_ASY_CODE_VERSION command MAX_INTR
|
|
* _TEST_COUNTER times.
|
|
*/
|
|
static int intr_test( sdla_t* card)
|
|
{
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
int err,i;
|
|
|
|
card->timer_int_enabled = 0;
|
|
|
|
err = chdlc_set_intr_mode(card, APP_INT_ON_COMMAND_COMPLETE);
|
|
|
|
if (err == CMD_OK) {
|
|
for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
|
|
|
|
mb->wan_data_len = 0;
|
|
mb->wan_command = READ_ASY_CODE_VERSION;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
if (err != CMD_OK)
|
|
chdlc_error(card, err, mb);
|
|
}
|
|
}else{
|
|
return err;
|
|
}
|
|
|
|
// udelay(2000);
|
|
// schedule();
|
|
// udelay(2000);
|
|
|
|
card->hw_iface.poke_byte(card->hw, card->intr_type_off, 0x00);
|
|
err = chdlc_set_intr_mode(card, 0);
|
|
|
|
if (err != CMD_OK)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*==============================================================================
|
|
* Determine what type of UDP call it is. CPIPEAB ?
|
|
*/
|
|
static int udp_pkt_type(struct sk_buff *skb, sdla_t* card)
|
|
{
|
|
wan_udp_pkt_t *wan_udp_pkt = (wan_udp_pkt_t *)skb->data;
|
|
|
|
if (skb->len < sizeof(wan_udp_pkt_t)){
|
|
return UDP_INVALID_TYPE;
|
|
}
|
|
|
|
#ifdef _WAN_UDP_DEBUG
|
|
printk(KERN_INFO "SIG %s = %s\n\
|
|
UPP %x = %x\n\
|
|
PRT %x = %x\n\
|
|
REQ %i = %i\n\
|
|
36 th = %x 37th = %x\n",
|
|
wan_udp_pkt->wan_udp_signature,
|
|
UDPMGMT_SIGNATURE,
|
|
wan_udp_pkt->wan_udp_dport,
|
|
ntohs(card->wandev.udp_port),
|
|
wan_udp_pkt->wan_ip_p,
|
|
UDPMGMT_UDP_PROTOCOL,
|
|
wan_udp_pkt->wan_udp_request_reply,
|
|
UDPMGMT_REQUEST,
|
|
skb->data[36], skb->data[37]);
|
|
#endif
|
|
|
|
if ((wan_udp_pkt->wan_udp_dport == ntohs(card->wandev.udp_port)) &&
|
|
(wan_udp_pkt->wan_ip_p == UDPMGMT_UDP_PROTOCOL) &&
|
|
(wan_udp_pkt->wan_udp_request_reply == UDPMGMT_REQUEST)) {
|
|
if (!strncmp(wan_udp_pkt->wan_udp_signature,UDPMGMT_SIGNATURE,8)){
|
|
return UDP_CPIPE_TYPE;
|
|
}
|
|
if (!strncmp(wan_udp_pkt->wan_udp_signature,GLOBAL_UDP_SIGNATURE,8)){
|
|
return UDP_CPIPE_TYPE;
|
|
}
|
|
}
|
|
return UDP_INVALID_TYPE;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Set PORT state.
|
|
*/
|
|
static void port_set_state (sdla_t *card, int state)
|
|
{
|
|
netdevice_t *dev;
|
|
|
|
if (card->wandev.state != state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case WAN_CONNECTED:
|
|
printk (KERN_INFO "%s: Link connected!\n",
|
|
card->devname);
|
|
break;
|
|
|
|
case WAN_CONNECTING:
|
|
printk (KERN_INFO "%s: Link connecting...\n",
|
|
card->devname);
|
|
break;
|
|
|
|
case WAN_DISCONNECTED:
|
|
printk (KERN_INFO "%s: Link disconnected!\n",
|
|
card->devname);
|
|
break;
|
|
}
|
|
|
|
card->wandev.state = state;
|
|
dev = WAN_DEVLE2DEV(WAN_LIST_FIRST(&card->wandev.dev_head));
|
|
if (dev && wan_netif_priv(dev)){
|
|
chdlc_private_area_t *chdlc_priv_area = wan_netif_priv(dev);
|
|
chdlc_priv_area->common.state = state;
|
|
if (chdlc_priv_area->common.usedby == API){
|
|
wan_update_api_state(chdlc_priv_area);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*===========================================================================
|
|
* config_chdlc
|
|
*
|
|
* Configure the chdlc protocol and enable communications.
|
|
*
|
|
* The if_open() function binds this function to the poll routine.
|
|
* Therefore, this function will run every time the chdlc interface
|
|
* is brought up. We cannot run this function from the if_open
|
|
* because if_open does not have access to the remote IP address.
|
|
*
|
|
* If the communications are not enabled, proceed to configure
|
|
* the card and enable communications.
|
|
*
|
|
* If the communications are enabled, it means that the interface
|
|
* was shutdown by ether the user or driver. In this case, we
|
|
* have to check that the IP addresses have not changed. If
|
|
* the IP addresses have changed, we have to reconfigure the firmware
|
|
* and update the changed IP addresses. Otherwise, just exit.
|
|
*
|
|
*/
|
|
|
|
static int config_chdlc (sdla_t *card, netdevice_t *dev)
|
|
{
|
|
if (card->u.c.comm_enabled){
|
|
return 0;
|
|
}
|
|
|
|
/* Setup the Board for asynchronous mode */
|
|
if (set_asy_config(card)) {
|
|
printk (KERN_INFO "%s: Failed CHDLC Async configuration!\n",
|
|
card->devname);
|
|
return 0;
|
|
}
|
|
|
|
card->hw_iface.poke_byte(card->hw, card->intr_type_off, 0x00);
|
|
card->hw_iface.poke_byte(card->hw, card->intr_perm_off, 0x00);
|
|
|
|
if (IS_TE1_CARD(card)) {
|
|
int err = -EINVAL;
|
|
printk(KERN_INFO "%s: Configuring onboard %s CSU/DSU\n",
|
|
card->devname,
|
|
(IS_T1_CARD(card))?"T1":"E1");
|
|
if (card->wandev.fe_iface.config){
|
|
err = card->wandev.fe_iface.config(&card->fe);
|
|
}
|
|
if (err){
|
|
printk(KERN_INFO "%s: Failed %s configuratoin!\n",
|
|
card->devname,
|
|
(IS_T1_CARD(card))?"T1":"E1");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
|
|
if (IS_56K_CARD(card)) {
|
|
int err = -EINVAL;
|
|
printk(KERN_INFO "%s: Configuring 56K onboard CSU/DSU\n",
|
|
card->devname);
|
|
|
|
if (card->wandev.fe_iface.config){
|
|
err = card->wandev.fe_iface.config(&card->fe);
|
|
}
|
|
if (err){
|
|
printk (KERN_INFO "%s: Failed 56K configuration!\n",
|
|
card->devname);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
|
|
/* Set interrupt mode and mask */
|
|
if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
|
|
APP_INT_ON_GLOBAL_EXCEP_COND |
|
|
APP_INT_ON_TX |
|
|
APP_INT_ON_TIMER)){
|
|
printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
|
|
card->devname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Mask All interrupts */
|
|
card->hw_iface.clear_bit(card->hw, card->intr_perm_off,
|
|
(APP_INT_ON_RX_FRAME | APP_INT_ON_TX |
|
|
APP_INT_ON_TIMER | APP_INT_ON_GLOBAL_EXCEP_COND));
|
|
|
|
|
|
/* Enable communications */
|
|
if (asy_comm_enable(card) != 0) {
|
|
printk(KERN_INFO "%s: Failed to enable async commnunication!\n",
|
|
card->devname);
|
|
card->hw_iface.poke_byte(card->hw, card->intr_perm_off, 0x00);
|
|
card->u.c.comm_enabled=0;
|
|
chdlc_set_intr_mode(card,0);
|
|
return -EINVAL;
|
|
}
|
|
|
|
DEBUG_EVENT("%s: Communications enabled on startup\n",
|
|
card->devname);
|
|
|
|
/* Initialize Rx/Tx buffer control fields */
|
|
init_chdlc_tx_rx_buff(card);
|
|
port_set_state(card, WAN_CONNECTED);
|
|
|
|
/* Manually poll the 56K CSU/DSU to get the status */
|
|
if (IS_56K_CARD(card)) {
|
|
/* 56K Update CSU/DSU alarms */
|
|
card->wandev.fe_iface.read_alarm(&card->fe, 1);
|
|
}
|
|
|
|
/* Unmask all interrupts except the Transmit and Timer interrupts */
|
|
card->hw_iface.set_bit(card->hw, card->intr_perm_off,
|
|
(APP_INT_ON_RX_FRAME | APP_INT_ON_GLOBAL_EXCEP_COND));
|
|
card->hw_iface.poke_byte(card->hw, card->intr_type_off, 0x00);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int set_adapter_config (sdla_t* card)
|
|
{
|
|
#if 0
|
|
wan_mbox_t* mb = &card->wan_mbox;
|
|
ADAPTER_CONFIGURATION_STRUCT* cfg = (ADAPTER_CONFIGURATION_STRUCT*)mb->wan_data;
|
|
int err;
|
|
|
|
card->hw_iface.getcfg(card->hw, SDLA_ADAPTERTYPE, &cfg->adapter_type);
|
|
cfg->adapter_config = 0x00;
|
|
cfg->operating_frequency = 00;
|
|
mb->wan_data_len = sizeof(ADAPTER_CONFIGURATION_STRUCT);
|
|
mb->wan_command = SET_ADAPTER_CONFIGURATION;
|
|
err = card->hw_iface.cmd(card->hw, card->mbox_off, mb);
|
|
|
|
if(err != COMMAND_OK) {
|
|
chdlc_error(card,err,mb);
|
|
}
|
|
return (err);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
|
|
void s508_lock (sdla_t *card, unsigned long *smp_flags)
|
|
{
|
|
spin_lock_irqsave(&card->wandev.lock, *smp_flags);
|
|
if (card->next){
|
|
spin_lock(&card->next->wandev.lock);
|
|
}
|
|
}
|
|
|
|
void s508_unlock (sdla_t *card, unsigned long *smp_flags)
|
|
{
|
|
if (card->next){
|
|
spin_unlock(&card->next->wandev.lock);
|
|
}
|
|
spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
|
|
}
|
|
|
|
/*
|
|
* ******************************************************************
|
|
* Proc FS function
|
|
*/
|
|
#define PROC_CFG_FRM "%-15s| %-12s|\n"
|
|
#define PROC_STAT_FRM "%-15s| %-12s| %-14s|\n"
|
|
static char chdlc_config_hdr[] =
|
|
"Interface name | Device name |\n";
|
|
static char chdlc_status_hdr[] =
|
|
"Interface name | Device name | Status |\n";
|
|
|
|
static int chdlc_get_config_info(void* priv, struct seq_file* m, int* stop_cnt)
|
|
{
|
|
chdlc_private_area_t* chdlc_priv_area = priv;
|
|
sdla_t* card = NULL;
|
|
|
|
if (chdlc_priv_area == NULL)
|
|
return m->count;
|
|
card = chdlc_priv_area->card;
|
|
|
|
if ((m->from == 0 && m->count == 0) || (m->from && m->from == *stop_cnt)){
|
|
PROC_ADD_LINE(m,
|
|
"%s", chdlc_config_hdr);
|
|
}
|
|
|
|
PROC_ADD_LINE(m,
|
|
PROC_CFG_FRM, chdlc_priv_area->if_name, card->devname);
|
|
return m->count;
|
|
}
|
|
|
|
static int chdlc_get_status_info(void* priv, struct seq_file* m, int* stop_cnt)
|
|
{
|
|
chdlc_private_area_t* chdlc_priv_area = priv;
|
|
sdla_t* card = NULL;
|
|
|
|
if (chdlc_priv_area == NULL)
|
|
return m->count;
|
|
card = chdlc_priv_area->card;
|
|
|
|
if ((m->from == 0 && m->count == 0) || (m->from && m->from == *stop_cnt)){
|
|
PROC_ADD_LINE(m,
|
|
"%s", chdlc_status_hdr);
|
|
}
|
|
|
|
PROC_ADD_LINE(m,
|
|
PROC_STAT_FRM,
|
|
chdlc_priv_area->if_name,
|
|
card->devname,
|
|
STATE_DECODE(chdlc_priv_area->common.state));
|
|
|
|
return m->count;
|
|
}
|
|
|
|
#define PROC_DEV_FR_S_FRM "%-20s| %-14s|\n"
|
|
#define PROC_DEV_FR_D_FRM "%-20s| %-14d|\n"
|
|
#define PROC_DEV_SEPARATE "=====================================\n"
|
|
|
|
|
|
static int chdlc_set_dev_config(struct file *file,
|
|
const char *buffer,
|
|
unsigned long count,
|
|
void *data)
|
|
{
|
|
int cnt = 0;
|
|
wan_device_t* wandev = (void*)data;
|
|
sdla_t* card = NULL;
|
|
|
|
if (wandev == NULL)
|
|
return cnt;
|
|
|
|
card = (sdla_t*)wandev->private;
|
|
|
|
printk(KERN_INFO "%s: New device config (%s)\n",
|
|
wandev->name, buffer);
|
|
/* Parse string */
|
|
|
|
return count;
|
|
}
|
|
|
|
|
|
#define PROC_IF_FR_S_FRM "%-30s\t%-14s\n"
|
|
#define PROC_IF_FR_D_FRM "%-30s\t%-14d\n"
|
|
#define PROC_IF_FR_L_FRM "%-30s\t%-14ld\n"
|
|
#define PROC_IF_SEPARATE "====================================================\n"
|
|
|
|
static int chdlc_set_if_info(struct file *file,
|
|
const char *buffer,
|
|
unsigned long count,
|
|
void *data)
|
|
{
|
|
netdevice_t* dev = (void*)data;
|
|
chdlc_private_area_t* chdlc_priv_area = NULL;
|
|
|
|
if (dev == NULL || dev->priv == NULL)
|
|
return count;
|
|
|
|
chdlc_priv_area = (chdlc_private_area_t*)dev->priv;
|
|
|
|
|
|
printk(KERN_INFO "%s: New interface config (%s)\n",
|
|
chdlc_priv_area->if_name, buffer);
|
|
/* Parse string */
|
|
|
|
return count;
|
|
}
|
|
|
|
static void chdlc_handle_front_end_state(void* card_id)
|
|
{
|
|
int rc;
|
|
sdla_t* card = (sdla_t*)card_id;
|
|
|
|
if (card->wandev.ignore_front_end_status == WANOPT_YES){
|
|
return;
|
|
}
|
|
|
|
if (IS_TE1_CARD(card)){
|
|
if (card->fe.fe_status == FE_CONNECTED) {
|
|
if(card->u.c.comm_enabled == 0) {
|
|
|
|
rc=chdlc_comm_enable(card);
|
|
if (rc==0){
|
|
init_chdlc_tx_rx_buff(card);
|
|
DEBUG_EVENT("%s: Communications enabled\n",
|
|
card->devname);
|
|
|
|
port_set_state(card, WAN_CONNECTED);
|
|
}else{
|
|
DEBUG_EVENT("%s: Critical Error: Failed to enable comms 0x%X\n",
|
|
card->devname,rc);
|
|
port_set_state(card, WAN_DISCONNECTED);
|
|
}
|
|
}
|
|
|
|
}else{
|
|
port_set_state(card, WAN_DISCONNECTED);
|
|
if (card->u.c.comm_enabled){
|
|
printk(KERN_INFO "%s: Communications disabled\n",
|
|
card->devname);
|
|
chdlc_comm_disable (card);
|
|
}
|
|
}
|
|
|
|
}else{
|
|
if (card->fe.fe_status == FE_CONNECTED){
|
|
if (card->u.c.state == WAN_CONNECTED){
|
|
port_set_state(card,WAN_CONNECTED);
|
|
}
|
|
}else{
|
|
port_set_state(card,WAN_DISCONNECTED);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/****** End ****************************************************************/
|