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3429 lines
97 KiB
3429 lines
97 KiB
/*****************************************************************************
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* sdla_ppp.c WANPIPE(tm) Multiprotocol WAN Link Driver. PPP module.
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*
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* Author: Nenad Corbic <ncorbic@sangoma.com>
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*
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* Copyright: (c) 1995-2001 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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* Feb 28, 2001 Nenad Corbic o Updated if_tx_timeout() routine for
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* 2.4.X kernels.
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* Nov 29, 2000 Nenad Corbic o Added the 2.4.x kernel support:
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* get_ip_address() function has moved
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* into the ppp_poll() routine. It cannot
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* be called from an interrupt.
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* Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging:
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* Deny all and specify allowed requests.
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* May 02, 2000 Nenad Corbic o Added the dynamic interface shutdown
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* option. When the link goes down, the
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* network interface IFF_UP flag is reset.
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* Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
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* Feb 25, 2000 Nenad Corbic o Fixed the FT1 UDP debugger problem.
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* Feb 09, 2000 Nenad Coribc o Shutdown bug fix. update() was called
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* with NULL dev pointer: no check.
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* Jan 24, 2000 Nenad Corbic o Disabled use of CMD complete inter.
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* Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels
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* Oct 25, 1999 Nenad Corbic o Support for 2.0.X kernels
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* Moved dynamic route processing into
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* a polling routine.
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* Oct 07, 1999 Nenad Corbic o Support for S514 PCI card.
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* Gideon Hack o UPD and Updates executed using timer interrupt
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* Sep 10, 1999 Nenad Corbic o Fixed up the /proc statistics
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* Jul 20, 1999 Nenad Corbic o Remove the polling routines and use
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* interrupts instead.
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* Sep 17, 1998 Jaspreet Singh o Updates for 2.2.X Kernels.
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* Aug 13, 1998 Jaspreet Singh o Improved Line Tracing.
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* Jun 22, 1998 David Fong o Added remote IP address assignment
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* Mar 15, 1998 Alan Cox o 2.1.8x basic port.
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* Apr 16, 1998 Jaspreet Singh o using htons() for the IPX protocol.
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* Dec 09, 1997 Jaspreet Singh o Added PAP and CHAP.
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* o Implemented new routines like
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* ppp_set_inbnd_auth(), ppp_set_outbnd_auth(),
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* tokenize() and strstrip().
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* Nov 27, 1997 Jaspreet Singh o Added protection against enabling of irqs
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* while they have been disabled.
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* Nov 24, 1997 Jaspreet Singh o Fixed another RACE condition caused by
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* disabling and enabling of irqs.
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* o Added new counters for stats on disable/enable
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* IRQs.
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* Nov 10, 1997 Jaspreet Singh o Initialized 'skb->mac.raw' to 'skb->data'
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* before every netif_rx().
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* o Free up the device structure in del_if().
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* Nov 07, 1997 Jaspreet Singh o Changed the delay to zero for Line tracing
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* command.
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* Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time.
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* Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow
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* control by avoiding RACE conditions. The
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* cli() and restore_flags() are taken out.
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* A new structure, "ppp_private_area", is added
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* to provide Driver Statistics.
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* Jul 21, 1997 Jaspreet Singh o Protected calls to sdla_peek() by adding
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* save_flags(), cli() and restore_flags().
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* Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
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* o Added ability to discard mulitcast and
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* broacast source addressed packets.
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* Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
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* New case (0x25) statement in if_send routine.
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* Added a global variable rCount to keep track
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* of FT1 status enabled on the board.
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* May 22, 1997 Jaspreet Singh o Added change in the PPP_SET_CONFIG command for
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* 508 card to reflect changes in the new
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* ppp508.sfm for supporting:continous transmission
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* of Configure-Request packets without receiving a
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* reply
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* OR-ed 0x300 to conf_flags
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* o Changed connect_tmout from 900 to 0
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* May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple boards
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* Apr 25, 1997 Farhan Thawar o added UDP Management stuff
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* Mar 11, 1997 Farhan Thawar Version 3.1.1
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* o fixed (+1) bug in rx_intr()
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* o changed if_send() to return 0 if
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* wandev.critical() is true
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* o free socket buffer in if_send() if
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* returning 0
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* Jan 15, 1997 Gene Kozin Version 3.1.0
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* o implemented exec() entry point
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* Jan 06, 1997 Gene Kozin Initial version.
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*****************************************************************************/
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#include <linux/module.h>
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#include <linux/kernel.h> /* printk(), and other useful stuff */
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#include <linux/stddef.h> /* offsetof(), etc. */
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#include <linux/errno.h> /* return codes */
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#include <linux/string.h> /* inline memset(), etc. */
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#include <linux/slab.h> /* kmalloc(), kfree() */
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#include <linux/wanrouter.h> /* WAN router definitions */
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#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
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#include <linux/if_arp.h> /* ARPHRD_* defines */
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#include <asm/byteorder.h> /* htons(), etc. */
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#include <linux/in.h> /* sockaddr_in */
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#include <asm/uaccess.h>
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#include <linux/inetdevice.h>
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#include <linux/netdevice.h>
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#include <linux/if.h>
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#include <linux/sdla_ppp.h> /* PPP firmware API definitions */
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#include <linux/sdlasfm.h> /* S514 Type Definition */
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/****** Defines & Macros ****************************************************/
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#define PPP_DFLT_MTU 1500 /* default MTU */
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#define PPP_MAX_MTU 4000 /* maximum MTU */
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#define PPP_HDR_LEN 1
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#define MAX_IP_ERRORS 100
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#define CONNECT_TIMEOUT (90*HZ) /* link connection timeout */
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#define HOLD_DOWN_TIME (5*HZ) /* link hold down time : Changed from 30 to 5 */
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/* For handle_IPXWAN() */
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#define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
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/* Macro for enabling/disabling debugging comments */
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//#define NEX_DEBUG
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#ifdef NEX_DEBUG
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#define NEX_PRINTK(format, a...) printk(format, ## a)
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#else
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#define NEX_PRINTK(format, a...)
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#endif /* NEX_DEBUG */
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#define DCD(a) ( a & 0x08 ? "HIGH" : "LOW" )
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#define CTS(a) ( a & 0x20 ? "HIGH" : "LOW" )
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#define LCP(a) ( a == 0x09 ? "OPEN" : "CLOSED" )
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#define IP(a) ( a == 0x09 ? "ENABLED" : "DISABLED" )
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#define TMR_INT_ENABLED_UPDATE 0x01
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#define TMR_INT_ENABLED_PPP_EVENT 0x02
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#define TMR_INT_ENABLED_UDP 0x04
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#define TMR_INT_ENABLED_CONFIG 0x20
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/* Set Configuraton Command Definitions */
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#define PERCENT_TX_BUFF 60
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#define TIME_BETWEEN_CONF_REQ 30
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#define TIME_BETWEEN_PAP_CHAP_REQ 30
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#define WAIT_PAP_CHAP_WITHOUT_REPLY 300
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#define WAIT_AFTER_DCD_CTS_LOW 5
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#define TIME_DCD_CTS_LOW_AFTER_LNK_DOWN 10
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#define WAIT_DCD_HIGH_AFTER_ENABLE_COMM 900
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#define MAX_CONF_REQ_WITHOUT_REPLY 10
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#define MAX_TERM_REQ_WITHOUT_REPLY 2
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#define NUM_CONF_NAK_WITHOUT_REPLY 5
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#define NUM_AUTH_REQ_WITHOUT_REPLY 10
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#define END_OFFSET 0x1F0
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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 PPP specific data
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*/
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typedef struct ppp_private_area
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{
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struct net_device *slave;
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sdla_t* card;
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unsigned long router_start_time; /*router start time in sec */
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unsigned long tick_counter; /*used for 5 second counter*/
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unsigned mc; /*multicast support on or off*/
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unsigned char enable_IPX;
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unsigned long network_number;
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unsigned char pap;
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unsigned char chap;
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unsigned char sysname[31]; /* system name for in-bnd auth*/
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unsigned char userid[511]; /* list of user ids */
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unsigned char passwd[511]; /* list of passwords */
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unsigned protocol; /* SKB Protocol */
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u32 ip_local; /* Local IP Address */
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u32 ip_remote; /* remote IP Address */
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u32 ip_local_tmp;
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u32 ip_remote_tmp;
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unsigned char timer_int_enabled; /* Who enabled the timer inter*/
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unsigned char update_comms_stats; /* Used by update function */
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unsigned long curr_trace_addr; /* Trace information */
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unsigned long start_trace_addr;
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unsigned long end_trace_addr;
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unsigned char interface_down; /* Brind down interface when channel
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goes down */
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unsigned long config_wait_timeout; /* After if_open() if in dynamic if mode,
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wait a few seconds before configuring */
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unsigned short udp_pkt_lgth;
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char udp_pkt_src;
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char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
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/* PPP specific statistics */
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if_send_stat_t if_send_stat;
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rx_intr_stat_t rx_intr_stat;
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pipe_mgmt_stat_t pipe_mgmt_stat;
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unsigned long router_up_time;
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/* Polling work queue entry. Each interface
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* has its own work queue entry, which is used
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* to defer events from the interrupt */
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struct work_struct poll_work;
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struct timer_list poll_delay_timer;
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u8 gateway;
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u8 config_ppp;
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u8 ip_error;
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}ppp_private_area_t;
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/* variable for keeping track of enabling/disabling FT1 monitor status */
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static int rCount = 0;
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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(struct wan_device *wandev);
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static int new_if(struct wan_device *wandev, struct net_device *dev,
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wanif_conf_t *conf);
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static int del_if(struct wan_device *wandev, struct net_device *dev);
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/* WANPIPE-specific entry points */
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static int wpp_exec (struct sdla *card, void *u_cmd, void *u_data);
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/* Network device interface */
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static int if_init(struct net_device *dev);
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static int if_open(struct net_device *dev);
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static int if_close(struct net_device *dev);
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static int if_header(struct sk_buff *skb, struct net_device *dev,
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unsigned short type,
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void *daddr, void *saddr, unsigned len);
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static void if_tx_timeout(struct net_device *dev);
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static int if_rebuild_hdr(struct sk_buff *skb);
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static struct net_device_stats *if_stats(struct net_device *dev);
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static int if_send(struct sk_buff *skb, struct net_device *dev);
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/* PPP firmware interface functions */
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static int ppp_read_version(sdla_t *card, char *str);
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static int ppp_set_outbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area);
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static int ppp_set_inbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area);
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static int ppp_configure(sdla_t *card, void *data);
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static int ppp_set_intr_mode(sdla_t *card, unsigned char mode);
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static int ppp_comm_enable(sdla_t *card);
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static int ppp_comm_disable(sdla_t *card);
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static int ppp_comm_disable_shutdown(sdla_t *card);
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static int ppp_get_err_stats(sdla_t *card);
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static int ppp_send(sdla_t *card, void *data, unsigned len, unsigned proto);
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static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb);
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static void wpp_isr(sdla_t *card);
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static void rx_intr(sdla_t *card);
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static void event_intr(sdla_t *card);
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static void timer_intr(sdla_t *card);
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/* Background polling routines */
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static void process_route(sdla_t *card);
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static void retrigger_comm(sdla_t *card);
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/* Miscellaneous functions */
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static int read_info( sdla_t *card );
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static int read_connection_info (sdla_t *card);
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static void remove_route( sdla_t *card );
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static int config508(struct net_device *dev, sdla_t *card);
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static void show_disc_cause(sdla_t * card, unsigned cause);
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static int reply_udp( unsigned char *data, unsigned int mbox_len );
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static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev,
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ppp_private_area_t *ppp_priv_area);
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static void init_ppp_tx_rx_buff( sdla_t *card );
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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 void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area);
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static void init_global_statistics( sdla_t *card );
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static int tokenize(char *str, char **tokens);
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static char* strstrip(char *str, char *s);
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static int chk_bcast_mcast_addr(sdla_t* card, struct net_device* dev,
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struct sk_buff *skb);
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static int config_ppp (sdla_t *);
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static void ppp_poll(struct net_device *dev);
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static void trigger_ppp_poll(struct net_device *dev);
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static void ppp_poll_delay (unsigned long dev_ptr);
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static int Read_connection_info;
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static int Intr_test_counter;
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static unsigned short available_buffer_space;
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/* IPX functions */
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static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number,
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unsigned char incoming);
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static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_PX,
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unsigned long network_number, unsigned short proto);
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/* Lock Functions */
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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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static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
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struct sk_buff *skb, struct net_device* dev,
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ppp_private_area_t* ppp_priv_area );
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static unsigned short calc_checksum (char *data, int len);
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static void disable_comm (sdla_t *card);
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static int detect_and_fix_tx_bug (sdla_t *card);
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/****** Public Functions ****************************************************/
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/*============================================================================
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* PPP protocol initialization routine.
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*
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* This routine is called by the main WANPIPE module during setup. At this
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* point adapter is completely initialized 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 wpp_init(sdla_t *card, wandev_conf_t *conf)
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{
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ppp_flags_t *flags;
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union
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{
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char str[80];
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} u;
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/* Verify configuration ID */
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if (conf->config_id != WANCONFIG_PPP) {
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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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/* Initialize miscellaneous pointers to structures on the adapter */
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switch (card->hw.type) {
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case SDLA_S508:
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card->mbox =(void*)(card->hw.dpmbase + PPP508_MB_OFFS);
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card->flags=(void*)(card->hw.dpmbase + PPP508_FLG_OFFS);
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break;
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case SDLA_S514:
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card->mbox =(void*)(card->hw.dpmbase + PPP514_MB_OFFS);
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card->flags=(void*)(card->hw.dpmbase + PPP514_FLG_OFFS);
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break;
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default:
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return -EINVAL;
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}
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flags = card->flags;
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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 (ppp_read_version(card, NULL) || ppp_read_version(card, u.str))
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return -EIO;
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printk(KERN_INFO "%s: running PPP firmware v%s\n",card->devname, u.str);
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/* Adjust configuration and set defaults */
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card->wandev.mtu = (conf->mtu) ?
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min_t(unsigned int, conf->mtu, PPP_MAX_MTU) : PPP_DFLT_MTU;
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card->wandev.bps = conf->bps;
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card->wandev.interface = conf->interface;
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card->wandev.clocking = conf->clocking;
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card->wandev.station = conf->station;
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card->isr = &wpp_isr;
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card->poll = NULL;
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card->exec = &wpp_exec;
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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.ttl = conf->ttl;
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card->wandev.state = WAN_DISCONNECTED;
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card->disable_comm = &disable_comm;
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card->irq_dis_if_send_count = 0;
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card->irq_dis_poll_count = 0;
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card->u.p.authenticator = conf->u.ppp.authenticator;
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card->u.p.ip_mode = conf->u.ppp.ip_mode ?
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conf->u.ppp.ip_mode : WANOPT_PPP_STATIC;
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card->TracingEnabled = 0;
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Read_connection_info = 1;
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/* initialize global statistics */
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init_global_statistics( card );
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if (!card->configured){
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int err;
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Intr_test_counter = 0;
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err = intr_test(card);
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if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
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printk("%s: Interrupt Test Failed, Counter: %i\n",
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card->devname, Intr_test_counter);
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printk( "%s: Please choose another interrupt\n",card->devname);
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return -EIO;
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}
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printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n",
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card->devname, Intr_test_counter);
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card->configured = 1;
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}
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ppp_set_intr_mode(card, PPP_INTR_TIMER);
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/* Turn off the transmit and timer interrupt */
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flags->imask &= ~PPP_INTR_TIMER;
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printk(KERN_INFO "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******* WAN Device Driver Entry Points *************************************/
|
|
|
|
/*============================================================================
|
|
* Update device status & statistics.
|
|
*/
|
|
static int update(struct wan_device *wandev)
|
|
{
|
|
sdla_t* card = wandev->private;
|
|
struct net_device* dev;
|
|
volatile ppp_private_area_t *ppp_priv_area;
|
|
ppp_flags_t *flags = card->flags;
|
|
unsigned long timeout;
|
|
|
|
/* sanity checks */
|
|
if ((wandev == NULL) || (wandev->private == NULL))
|
|
return -EFAULT;
|
|
|
|
if (wandev->state == WAN_UNCONFIGURED)
|
|
return -ENODEV;
|
|
|
|
/* Shutdown bug fix. This function can be
|
|
* called with NULL dev pointer during
|
|
* shutdown
|
|
*/
|
|
if ((dev=card->wandev.dev) == NULL){
|
|
return -ENODEV;
|
|
}
|
|
|
|
if ((ppp_priv_area=dev->priv) == NULL){
|
|
return -ENODEV;
|
|
}
|
|
|
|
ppp_priv_area->update_comms_stats = 2;
|
|
ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
|
|
/* wait a maximum of 1 second for the statistics to be updated */
|
|
timeout = jiffies;
|
|
for(;;) {
|
|
if(ppp_priv_area->update_comms_stats == 0){
|
|
break;
|
|
}
|
|
if ((jiffies - timeout) > (1 * HZ)){
|
|
ppp_priv_area->update_comms_stats = 0;
|
|
ppp_priv_area->timer_int_enabled &=
|
|
~TMR_INT_ENABLED_UPDATE;
|
|
return -EAGAIN;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Create new logical channel.
|
|
* This routine is called by the router when ROUTER_IFNEW IOCTL is being
|
|
* handled.
|
|
* 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.
|
|
*
|
|
* Return: 0 o.k.
|
|
* < 0 failure (channel will not be created)
|
|
*/
|
|
static int new_if(struct wan_device *wandev, struct net_device *dev,
|
|
wanif_conf_t *conf)
|
|
{
|
|
sdla_t *card = wandev->private;
|
|
ppp_private_area_t *ppp_priv_area;
|
|
|
|
if (wandev->ndev)
|
|
return -EEXIST;
|
|
|
|
|
|
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 */
|
|
ppp_priv_area = kmalloc(sizeof(ppp_private_area_t), GFP_KERNEL);
|
|
|
|
if( ppp_priv_area == NULL )
|
|
return -ENOMEM;
|
|
|
|
memset(ppp_priv_area, 0, sizeof(ppp_private_area_t));
|
|
|
|
ppp_priv_area->card = card;
|
|
|
|
/* initialize data */
|
|
strcpy(card->u.p.if_name, conf->name);
|
|
|
|
/* initialize data in ppp_private_area structure */
|
|
|
|
init_ppp_priv_struct( ppp_priv_area );
|
|
|
|
ppp_priv_area->mc = conf->mc;
|
|
ppp_priv_area->pap = conf->pap;
|
|
ppp_priv_area->chap = conf->chap;
|
|
|
|
/* Option to bring down the interface when
|
|
* the link goes down */
|
|
if (conf->if_down){
|
|
set_bit(DYN_OPT_ON,&ppp_priv_area->interface_down);
|
|
printk("%s: Dynamic interface configuration enabled\n",
|
|
card->devname);
|
|
}
|
|
|
|
/* If no user ids are specified */
|
|
if(!strlen(conf->userid) && (ppp_priv_area->pap||ppp_priv_area->chap)){
|
|
kfree(ppp_priv_area);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* If no passwords are specified */
|
|
if(!strlen(conf->passwd) && (ppp_priv_area->pap||ppp_priv_area->chap)){
|
|
kfree(ppp_priv_area);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if(strlen(conf->sysname) > 31){
|
|
kfree(ppp_priv_area);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* If no system name is specified */
|
|
if(!strlen(conf->sysname) && (card->u.p.authenticator)){
|
|
kfree(ppp_priv_area);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* copy the data into the ppp private structure */
|
|
memcpy(ppp_priv_area->userid, conf->userid, strlen(conf->userid));
|
|
memcpy(ppp_priv_area->passwd, conf->passwd, strlen(conf->passwd));
|
|
memcpy(ppp_priv_area->sysname, conf->sysname, strlen(conf->sysname));
|
|
|
|
|
|
ppp_priv_area->enable_IPX = conf->enable_IPX;
|
|
if (conf->network_number){
|
|
ppp_priv_area->network_number = conf->network_number;
|
|
}else{
|
|
ppp_priv_area->network_number = 0xDEADBEEF;
|
|
}
|
|
|
|
/* Tells us that if this interface is a
|
|
* gateway or not */
|
|
if ((ppp_priv_area->gateway = conf->gateway) == WANOPT_YES){
|
|
printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
|
|
card->devname,card->u.p.if_name);
|
|
}
|
|
|
|
/* prepare network device data space for registration */
|
|
strcpy(dev->name,card->u.p.if_name);
|
|
|
|
dev->init = &if_init;
|
|
dev->priv = ppp_priv_area;
|
|
dev->mtu = min_t(unsigned int, dev->mtu, card->wandev.mtu);
|
|
|
|
/* Initialize the polling work routine */
|
|
INIT_WORK(&ppp_priv_area->poll_work, (void*)(void*)ppp_poll, dev);
|
|
|
|
/* Initialize the polling delay timer */
|
|
init_timer(&ppp_priv_area->poll_delay_timer);
|
|
ppp_priv_area->poll_delay_timer.data = (unsigned long)dev;
|
|
ppp_priv_area->poll_delay_timer.function = ppp_poll_delay;
|
|
|
|
|
|
/* Since we start with dummy IP addresses we can say
|
|
* that route exists */
|
|
printk(KERN_INFO "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Delete logical channel.
|
|
*/
|
|
static int del_if(struct wan_device *wandev, struct net_device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void disable_comm (sdla_t *card)
|
|
{
|
|
ppp_comm_disable_shutdown(card);
|
|
return;
|
|
}
|
|
|
|
/****** WANPIPE-specific entry points ***************************************/
|
|
|
|
/*============================================================================
|
|
* Execute adapter interface command.
|
|
*/
|
|
|
|
//FIXME: Why do we need this ????
|
|
static int wpp_exec(struct sdla *card, void *u_cmd, void *u_data)
|
|
{
|
|
ppp_mbox_t *mbox = card->mbox;
|
|
int len;
|
|
|
|
if (copy_from_user((void*)&mbox->cmd, u_cmd, sizeof(ppp_cmd_t)))
|
|
return -EFAULT;
|
|
|
|
len = mbox->cmd.length;
|
|
|
|
if (len) {
|
|
|
|
if( copy_from_user((void*)&mbox->data, u_data, len))
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
/* execute command */
|
|
if (!sdla_exec(mbox))
|
|
return -EIO;
|
|
|
|
/* return result */
|
|
if( copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(ppp_cmd_t)))
|
|
return -EFAULT;
|
|
len = mbox->cmd.length;
|
|
|
|
if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/****** Network Device Interface ********************************************/
|
|
|
|
/*============================================================================
|
|
* Initialize Linux network interface.
|
|
*
|
|
* This routine is called only once for each interface, during Linux network
|
|
* interface registration. Returning anything but zero will fail interface
|
|
* registration.
|
|
*/
|
|
static int if_init(struct net_device *dev)
|
|
{
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
sdla_t *card = ppp_priv_area->card;
|
|
struct wan_device *wandev = &card->wandev;
|
|
|
|
/* Initialize device driver entry points */
|
|
dev->open = &if_open;
|
|
dev->stop = &if_close;
|
|
dev->hard_header = &if_header;
|
|
dev->rebuild_header = &if_rebuild_hdr;
|
|
dev->hard_start_xmit = &if_send;
|
|
dev->get_stats = &if_stats;
|
|
dev->tx_timeout = &if_tx_timeout;
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|
|
|
/* Initialize media-specific parameters */
|
|
dev->type = ARPHRD_PPP; /* ARP h/w type */
|
|
dev->flags |= IFF_POINTOPOINT;
|
|
dev->flags |= IFF_NOARP;
|
|
|
|
/* Enable Mulitcasting if specified by user*/
|
|
if (ppp_priv_area->mc == WANOPT_YES){
|
|
dev->flags |= IFF_MULTICAST;
|
|
}
|
|
|
|
dev->mtu = wandev->mtu;
|
|
dev->hard_header_len = PPP_HDR_LEN; /* media header length */
|
|
|
|
/* Initialize hardware parameters (just for reference) */
|
|
dev->irq = wandev->irq;
|
|
dev->dma = wandev->dma;
|
|
dev->base_addr = wandev->ioport;
|
|
dev->mem_start = wandev->maddr;
|
|
dev->mem_end = wandev->maddr + wandev->msize - 1;
|
|
|
|
/* Set transmit buffer queue length */
|
|
dev->tx_queue_len = 100;
|
|
SET_MODULE_OWNER(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Open network interface.
|
|
* o enable communications and interrupts.
|
|
* o prevent module from unloading by incrementing use count
|
|
*
|
|
* Return 0 if O.k. or errno.
|
|
*/
|
|
static int if_open(struct net_device *dev)
|
|
{
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
sdla_t *card = ppp_priv_area->card;
|
|
struct timeval tv;
|
|
//unsigned long smp_flags;
|
|
|
|
if (netif_running(dev))
|
|
return -EBUSY;
|
|
|
|
wanpipe_open(card);
|
|
|
|
netif_start_queue(dev);
|
|
|
|
do_gettimeofday( &tv );
|
|
ppp_priv_area->router_start_time = tv.tv_sec;
|
|
|
|
/* We cannot configure the card here because we don't
|
|
* have access to the interface IP addresses.
|
|
* Once the interface initilization is complete, we will be
|
|
* able to access the IP addresses. Therefore,
|
|
* configure the ppp link in the poll routine */
|
|
set_bit(0,&ppp_priv_area->config_ppp);
|
|
ppp_priv_area->config_wait_timeout=jiffies;
|
|
|
|
/* Start the PPP configuration after 1sec delay.
|
|
* This will give the interface initilization time
|
|
* to finish its configuration */
|
|
mod_timer(&ppp_priv_area->poll_delay_timer, jiffies + HZ);
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Close network interface.
|
|
* o if this is the last open, then disable communications and interrupts.
|
|
* o reset flags.
|
|
*/
|
|
static int if_close(struct net_device *dev)
|
|
{
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
sdla_t *card = ppp_priv_area->card;
|
|
|
|
netif_stop_queue(dev);
|
|
wanpipe_close(card);
|
|
|
|
del_timer (&ppp_priv_area->poll_delay_timer);
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Build media header.
|
|
*
|
|
* The trick here is to put packet type (Ethertype) into 'protocol' field of
|
|
* the socket buffer, so that we don't forget it. If packet type is not
|
|
* supported, set skb->protocol to 0 and discard packet later.
|
|
*
|
|
* Return: media header length.
|
|
*/
|
|
static int if_header(struct sk_buff *skb, struct net_device *dev,
|
|
unsigned short type, void *daddr, void *saddr, unsigned len)
|
|
{
|
|
switch (type)
|
|
{
|
|
case ETH_P_IP:
|
|
case ETH_P_IPX:
|
|
skb->protocol = htons(type);
|
|
break;
|
|
|
|
default:
|
|
skb->protocol = 0;
|
|
}
|
|
|
|
return PPP_HDR_LEN;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Re-build media header.
|
|
*
|
|
* Return: 1 physical address resolved.
|
|
* 0 physical address not resolved
|
|
*/
|
|
static int if_rebuild_hdr (struct sk_buff *skb)
|
|
{
|
|
struct net_device *dev = skb->dev;
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
sdla_t *card = ppp_priv_area->card;
|
|
|
|
printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
|
|
card->devname, dev->name);
|
|
return 1;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Handle transmit timeout event from netif watchdog
|
|
*/
|
|
static void if_tx_timeout(struct net_device *dev)
|
|
{
|
|
ppp_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.
|
|
*/
|
|
|
|
++ chan->if_send_stat.if_send_tbusy;
|
|
++card->wandev.stats.collisions;
|
|
|
|
printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
|
|
++chan->if_send_stat.if_send_tbusy_timeout;
|
|
netif_wake_queue (dev);
|
|
}
|
|
|
|
|
|
|
|
/*============================================================================
|
|
* Send a packet on a network interface.
|
|
* 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
|
|
*
|
|
* 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, struct net_device *dev)
|
|
{
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
sdla_t *card = ppp_priv_area->card;
|
|
unsigned char *sendpacket;
|
|
unsigned long smp_flags;
|
|
ppp_flags_t *flags = card->flags;
|
|
int udp_type;
|
|
int err=0;
|
|
|
|
++ppp_priv_area->if_send_stat.if_send_entry;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
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);
|
|
|
|
++ppp_priv_area->if_send_stat.if_send_skb_null;
|
|
|
|
netif_wake_queue(dev);
|
|
return 0;
|
|
}
|
|
|
|
sendpacket = skb->data;
|
|
|
|
udp_type = udp_pkt_type( skb, card );
|
|
|
|
|
|
if (udp_type == UDP_PTPIPE_TYPE){
|
|
if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
|
|
ppp_priv_area)){
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
}
|
|
++ppp_priv_area->if_send_stat.if_send_PIPE_request;
|
|
netif_start_queue(dev);
|
|
return 0;
|
|
}
|
|
|
|
/* Check for broadcast and multicast addresses
|
|
* If found, drop (deallocate) a packet and return.
|
|
*/
|
|
if(chk_bcast_mcast_addr(card, dev, skb)){
|
|
++card->wandev.stats.tx_dropped;
|
|
dev_kfree_skb_any(skb);
|
|
netif_start_queue(dev);
|
|
return 0;
|
|
}
|
|
|
|
|
|
if(card->hw.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;
|
|
++ppp_priv_area->if_send_stat.if_send_critical_non_ISR;
|
|
netif_start_queue(dev);
|
|
goto if_send_exit_crit;
|
|
}
|
|
|
|
if (card->wandev.state != WAN_CONNECTED) {
|
|
|
|
++ppp_priv_area->if_send_stat.if_send_wan_disconnected;
|
|
++card->wandev.stats.tx_dropped;
|
|
netif_start_queue(dev);
|
|
|
|
} else if (!skb->protocol) {
|
|
++ppp_priv_area->if_send_stat.if_send_protocol_error;
|
|
++card->wandev.stats.tx_errors;
|
|
netif_start_queue(dev);
|
|
|
|
} else {
|
|
|
|
/*If it's IPX change the network numbers to 0 if they're ours.*/
|
|
if( skb->protocol == htons(ETH_P_IPX) ) {
|
|
if(ppp_priv_area->enable_IPX) {
|
|
switch_net_numbers( skb->data,
|
|
ppp_priv_area->network_number, 0);
|
|
} else {
|
|
++card->wandev.stats.tx_dropped;
|
|
netif_start_queue(dev);
|
|
goto if_send_exit_crit;
|
|
}
|
|
}
|
|
|
|
if (ppp_send(card, skb->data, skb->len, skb->protocol)) {
|
|
netif_stop_queue(dev);
|
|
++ppp_priv_area->if_send_stat.if_send_adptr_bfrs_full;
|
|
++ppp_priv_area->if_send_stat.if_send_tx_int_enabled;
|
|
} else {
|
|
++ppp_priv_area->if_send_stat.if_send_bfr_passed_to_adptr;
|
|
++card->wandev.stats.tx_packets;
|
|
card->wandev.stats.tx_bytes += skb->len;
|
|
netif_start_queue(dev);
|
|
dev->trans_start = jiffies;
|
|
}
|
|
}
|
|
|
|
if_send_exit_crit:
|
|
|
|
if (!(err=netif_queue_stopped(dev))){
|
|
dev_kfree_skb_any(skb);
|
|
}else{
|
|
ppp_priv_area->tick_counter = jiffies;
|
|
flags->imask |= PPP_INTR_TXRDY; /* unmask Tx interrupts */
|
|
}
|
|
|
|
clear_bit(SEND_CRIT,&card->wandev.critical);
|
|
if(card->hw.type != SDLA_S514){
|
|
s508_unlock(card,&smp_flags);
|
|
}
|
|
|
|
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, struct net_device* dev,
|
|
ppp_private_area_t* ppp_priv_area )
|
|
{
|
|
int udp_pkt_stored = 0;
|
|
|
|
if(!ppp_priv_area->udp_pkt_lgth && (skb->len<=MAX_LGTH_UDP_MGNT_PKT)){
|
|
ppp_priv_area->udp_pkt_lgth = skb->len;
|
|
ppp_priv_area->udp_pkt_src = udp_pkt_src;
|
|
memcpy(ppp_priv_area->udp_pkt_data, skb->data, skb->len);
|
|
ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UDP;
|
|
ppp_priv_area->protocol = skb->protocol;
|
|
udp_pkt_stored = 1;
|
|
}else{
|
|
if (skb->len > MAX_LGTH_UDP_MGNT_PKT){
|
|
printk(KERN_INFO "%s: PIPEMON UDP request too long : %i\n",
|
|
card->devname, skb->len);
|
|
}else{
|
|
printk(KERN_INFO "%s: PIPEMON UPD request already pending\n",
|
|
card->devname);
|
|
}
|
|
ppp_priv_area->udp_pkt_lgth = 0;
|
|
}
|
|
|
|
if(udp_pkt_src == UDP_PKT_FRM_STACK){
|
|
dev_kfree_skb_any(skb);
|
|
}else{
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
return(udp_pkt_stored);
|
|
}
|
|
|
|
|
|
|
|
/*============================================================================
|
|
* 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;
|
|
ppp_udp_pkt_t *p_udp_pkt = (ppp_udp_pkt_t *)data;
|
|
|
|
/* Set length of packet */
|
|
len = sizeof(ip_pkt_t)+
|
|
sizeof(udp_pkt_t)+
|
|
sizeof(wp_mgmt_t)+
|
|
sizeof(cblock_t)+
|
|
mbox_len;
|
|
|
|
/* fill in UDP reply */
|
|
p_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
|
|
|
|
/* fill in UDP length */
|
|
udp_length = sizeof(udp_pkt_t)+
|
|
sizeof(wp_mgmt_t)+
|
|
sizeof(cblock_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);
|
|
p_udp_pkt->udp_pkt.udp_length = temp;
|
|
|
|
|
|
/* swap UDP ports */
|
|
temp = p_udp_pkt->udp_pkt.udp_src_port;
|
|
p_udp_pkt->udp_pkt.udp_src_port =
|
|
p_udp_pkt->udp_pkt.udp_dst_port;
|
|
p_udp_pkt->udp_pkt.udp_dst_port = temp;
|
|
|
|
|
|
/* add UDP pseudo header */
|
|
temp = 0x1100;
|
|
*((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound)) = temp;
|
|
temp = (udp_length<<8)|(udp_length>>8);
|
|
*((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound+2)) = temp;
|
|
|
|
/* calculate UDP checksum */
|
|
p_udp_pkt->udp_pkt.udp_checksum = 0;
|
|
p_udp_pkt->udp_pkt.udp_checksum =
|
|
calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
|
|
|
|
/* fill in IP length */
|
|
ip_length = udp_length + sizeof(ip_pkt_t);
|
|
temp = (ip_length<<8)|(ip_length>>8);
|
|
p_udp_pkt->ip_pkt.total_length = temp;
|
|
|
|
/* swap IP addresses */
|
|
ip_temp = p_udp_pkt->ip_pkt.ip_src_address;
|
|
p_udp_pkt->ip_pkt.ip_src_address = p_udp_pkt->ip_pkt.ip_dst_address;
|
|
p_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
|
|
|
|
/* fill in IP checksum */
|
|
p_udp_pkt->ip_pkt.hdr_checksum = 0;
|
|
p_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
If incoming is 0 (outgoing)- if the net numbers is ours make it 0
|
|
if incoming is 1 - if the net number is 0 make it ours
|
|
|
|
*/
|
|
static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
|
|
{
|
|
unsigned long pnetwork_number;
|
|
|
|
pnetwork_number = (unsigned long)((sendpacket[6] << 24) +
|
|
(sendpacket[7] << 16) + (sendpacket[8] << 8) +
|
|
sendpacket[9]);
|
|
|
|
if (!incoming) {
|
|
//If the destination network number is ours, make it 0
|
|
if( pnetwork_number == network_number) {
|
|
sendpacket[6] = sendpacket[7] = sendpacket[8] =
|
|
sendpacket[9] = 0x00;
|
|
}
|
|
} else {
|
|
//If the incoming network is 0, make it ours
|
|
if( pnetwork_number == 0) {
|
|
sendpacket[6] = (unsigned char)(network_number >> 24);
|
|
sendpacket[7] = (unsigned char)((network_number &
|
|
0x00FF0000) >> 16);
|
|
sendpacket[8] = (unsigned char)((network_number &
|
|
0x0000FF00) >> 8);
|
|
sendpacket[9] = (unsigned char)(network_number &
|
|
0x000000FF);
|
|
}
|
|
}
|
|
|
|
|
|
pnetwork_number = (unsigned long)((sendpacket[18] << 24) +
|
|
(sendpacket[19] << 16) + (sendpacket[20] << 8) +
|
|
sendpacket[21]);
|
|
|
|
if( !incoming ) {
|
|
//If the source network is ours, make it 0
|
|
if( pnetwork_number == network_number) {
|
|
sendpacket[18] = sendpacket[19] = sendpacket[20] =
|
|
sendpacket[21] = 0x00;
|
|
}
|
|
} else {
|
|
//If the source network is 0, make it ours
|
|
if( pnetwork_number == 0 ) {
|
|
sendpacket[18] = (unsigned char)(network_number >> 24);
|
|
sendpacket[19] = (unsigned char)((network_number &
|
|
0x00FF0000) >> 16);
|
|
sendpacket[20] = (unsigned char)((network_number &
|
|
0x0000FF00) >> 8);
|
|
sendpacket[21] = (unsigned char)(network_number &
|
|
0x000000FF);
|
|
}
|
|
}
|
|
} /* switch_net_numbers */
|
|
|
|
/*============================================================================
|
|
* Get ethernet-style interface statistics.
|
|
* Return a pointer to struct net_device_stats.
|
|
*/
|
|
static struct net_device_stats *if_stats(struct net_device *dev)
|
|
{
|
|
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
sdla_t* card;
|
|
|
|
if( ppp_priv_area == NULL )
|
|
return NULL;
|
|
|
|
card = ppp_priv_area->card;
|
|
return &card->wandev.stats;
|
|
}
|
|
|
|
/****** PPP Firmware Interface Functions ************************************/
|
|
|
|
/*============================================================================
|
|
* Read firmware code version.
|
|
* Put code version as ASCII string in str.
|
|
*/
|
|
static int ppp_read_version(sdla_t *card, char *str)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.command = PPP_READ_CODE_VERSION;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK)
|
|
|
|
ppp_error(card, err, mb);
|
|
|
|
else if (str) {
|
|
|
|
int len = mb->cmd.length;
|
|
|
|
memcpy(str, mb->data, len);
|
|
str[len] = '\0';
|
|
|
|
}
|
|
|
|
return err;
|
|
}
|
|
/*===========================================================================
|
|
* Set Out-Bound Authentication.
|
|
*/
|
|
static int ppp_set_outbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
memset(&mb->data, 0, (strlen(ppp_priv_area->userid) +
|
|
strlen(ppp_priv_area->passwd) + 2 ) );
|
|
memcpy(mb->data, ppp_priv_area->userid, strlen(ppp_priv_area->userid));
|
|
memcpy((mb->data + strlen(ppp_priv_area->userid) + 1),
|
|
ppp_priv_area->passwd, strlen(ppp_priv_area->passwd));
|
|
|
|
mb->cmd.length = strlen(ppp_priv_area->userid) +
|
|
strlen(ppp_priv_area->passwd) + 2 ;
|
|
|
|
mb->cmd.command = PPP_SET_OUTBOUND_AUTH;
|
|
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*===========================================================================
|
|
* Set In-Bound Authentication.
|
|
*/
|
|
static int ppp_set_inbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err, i;
|
|
char* user_tokens[32];
|
|
char* pass_tokens[32];
|
|
int userids, passwds;
|
|
int add_ptr;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
memset(&mb->data, 0, 1008);
|
|
memcpy(mb->data, ppp_priv_area->sysname,
|
|
strlen(ppp_priv_area->sysname));
|
|
|
|
/* Parse the userid string and the password string and build a string
|
|
to copy it to the data area of the command structure. The string
|
|
will look like "SYS_NAME<NULL>USER1<NULL>PASS1<NULL>USER2<NULL>PASS2
|
|
....<NULL> "
|
|
*/
|
|
userids = tokenize( ppp_priv_area->userid, user_tokens);
|
|
passwds = tokenize( ppp_priv_area->passwd, pass_tokens);
|
|
|
|
if (userids != passwds){
|
|
printk(KERN_INFO "%s: Number of passwords does not equal the number of user ids\n", card->devname);
|
|
return 1;
|
|
}
|
|
|
|
add_ptr = strlen(ppp_priv_area->sysname) + 1;
|
|
for (i=0; i<userids; i++){
|
|
memcpy((mb->data + add_ptr), user_tokens[i],
|
|
strlen(user_tokens[i]));
|
|
memcpy((mb->data + add_ptr + strlen(user_tokens[i]) + 1),
|
|
pass_tokens[i], strlen(pass_tokens[i]));
|
|
add_ptr = add_ptr + strlen(user_tokens[i]) + 1 +
|
|
strlen(pass_tokens[i]) + 1;
|
|
}
|
|
|
|
mb->cmd.length = add_ptr + 1;
|
|
mb->cmd.command = PPP_SET_INBOUND_AUTH;
|
|
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
/*============================================================================
|
|
* Tokenize string.
|
|
* Parse a string of the following syntax:
|
|
* <arg1>,<arg2>,...
|
|
* and fill array of tokens with pointers to string elements.
|
|
*
|
|
*/
|
|
static int tokenize (char *str, char **tokens)
|
|
{
|
|
int cnt = 0;
|
|
|
|
tokens[0] = strsep(&str, "/");
|
|
while (tokens[cnt] && (cnt < 32 - 1))
|
|
{
|
|
tokens[cnt] = strstrip(tokens[cnt], " \t");
|
|
tokens[++cnt] = strsep(&str, "/");
|
|
}
|
|
return cnt;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Strip leading and trailing spaces off the string str.
|
|
*/
|
|
static char* strstrip (char *str, char* s)
|
|
{
|
|
char *eos = str + strlen(str); /* -> end of string */
|
|
|
|
while (*str && strchr(s, *str))
|
|
++str /* strip leading spaces */
|
|
;
|
|
while ((eos > str) && strchr(s, *(eos - 1)))
|
|
--eos /* strip trailing spaces */
|
|
;
|
|
*eos = '\0';
|
|
return str;
|
|
}
|
|
/*============================================================================
|
|
* Configure PPP firmware.
|
|
*/
|
|
static int ppp_configure(sdla_t *card, void *data)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int data_len = sizeof(ppp508_conf_t);
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
memcpy(mb->data, data, data_len);
|
|
mb->cmd.length = data_len;
|
|
mb->cmd.command = PPP_SET_CONFIG;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Set interrupt mode.
|
|
*/
|
|
static int ppp_set_intr_mode(sdla_t *card, unsigned char mode)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
ppp_intr_info_t *ppp_intr_data = (ppp_intr_info_t *) &mb->data[0];
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
ppp_intr_data->i_enable = mode;
|
|
|
|
ppp_intr_data->irq = card->hw.irq;
|
|
mb->cmd.length = 2;
|
|
|
|
/* If timer has been enabled, set the timer delay to 1sec */
|
|
if (mode & 0x80){
|
|
ppp_intr_data->timer_len = 250; //5;//100; //250;
|
|
mb->cmd.length = 4;
|
|
}
|
|
|
|
mb->cmd.command = PPP_SET_INTR_FLAGS;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Enable communications.
|
|
*/
|
|
static int ppp_comm_enable(sdla_t *card)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.command = PPP_COMM_ENABLE;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
else
|
|
card->u.p.comm_enabled = 1;
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Disable communications.
|
|
*/
|
|
static int ppp_comm_disable(sdla_t *card)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.command = PPP_COMM_DISABLE;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
else
|
|
card->u.p.comm_enabled = 0;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int ppp_comm_disable_shutdown(sdla_t *card)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
ppp_intr_info_t *ppp_intr_data;
|
|
int err;
|
|
|
|
if (!mb){
|
|
return 1;
|
|
}
|
|
|
|
ppp_intr_data = (ppp_intr_info_t *) &mb->data[0];
|
|
|
|
/* Disable all interrupts */
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
ppp_intr_data->i_enable = 0;
|
|
|
|
ppp_intr_data->irq = card->hw.irq;
|
|
mb->cmd.length = 2;
|
|
|
|
mb->cmd.command = PPP_SET_INTR_FLAGS;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
/* Disable communicatinons */
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.command = PPP_COMM_DISABLE;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
card->u.p.comm_enabled = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/*============================================================================
|
|
* Get communications error statistics.
|
|
*/
|
|
static int ppp_get_err_stats(sdla_t *card)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.command = PPP_READ_ERROR_STATS;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err == CMD_OK) {
|
|
|
|
ppp_err_stats_t* stats = (void*)mb->data;
|
|
card->wandev.stats.rx_over_errors = stats->rx_overrun;
|
|
card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
|
|
card->wandev.stats.rx_missed_errors = stats->rx_abort;
|
|
card->wandev.stats.rx_length_errors = stats->rx_lost;
|
|
card->wandev.stats.tx_aborted_errors = stats->tx_abort;
|
|
|
|
} else
|
|
ppp_error(card, err, mb);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Send packet.
|
|
* Return: 0 - o.k.
|
|
* 1 - no transmit buffers available
|
|
*/
|
|
static int ppp_send (sdla_t *card, void *data, unsigned len, unsigned proto)
|
|
{
|
|
ppp_buf_ctl_t *txbuf = card->u.p.txbuf;
|
|
|
|
if (txbuf->flag)
|
|
return 1;
|
|
|
|
sdla_poke(&card->hw, txbuf->buf.ptr, data, len);
|
|
|
|
txbuf->length = len; /* frame length */
|
|
|
|
if (proto == htons(ETH_P_IPX))
|
|
txbuf->proto = 0x01; /* protocol ID */
|
|
else
|
|
txbuf->proto = 0x00; /* protocol ID */
|
|
|
|
txbuf->flag = 1; /* start transmission */
|
|
|
|
/* Update transmit buffer control fields */
|
|
card->u.p.txbuf = ++txbuf;
|
|
|
|
if ((void*)txbuf > card->u.p.txbuf_last)
|
|
card->u.p.txbuf = card->u.p.txbuf_base;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/****** 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 ppp_error(sdla_t *card, int err, ppp_mbox_t *mb)
|
|
{
|
|
unsigned cmd = mb->cmd.command;
|
|
|
|
switch (err) {
|
|
|
|
case CMD_TIMEOUT:
|
|
printk(KERN_ERR "%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;
|
|
}
|
|
|
|
/****** Interrupt Handlers **************************************************/
|
|
|
|
/*============================================================================
|
|
* PPP interrupt service routine.
|
|
*/
|
|
static void wpp_isr (sdla_t *card)
|
|
{
|
|
ppp_flags_t *flags = card->flags;
|
|
char *ptr = &flags->iflag;
|
|
struct net_device *dev = card->wandev.dev;
|
|
int i;
|
|
|
|
card->in_isr = 1;
|
|
++card->statistics.isr_entry;
|
|
|
|
if (!dev && flags->iflag != PPP_INTR_CMD){
|
|
card->in_isr = 0;
|
|
flags->iflag = 0;
|
|
return;
|
|
}
|
|
|
|
if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
|
|
card->in_isr = 0;
|
|
flags->iflag = 0;
|
|
return;
|
|
}
|
|
|
|
|
|
if(card->hw.type != SDLA_S514){
|
|
if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
|
|
++card->statistics.isr_already_critical;
|
|
printk (KERN_INFO "%s: Critical while in ISR!\n",
|
|
card->devname);
|
|
card->in_isr = 0;
|
|
flags->iflag = 0;
|
|
return;
|
|
}
|
|
}
|
|
|
|
switch (flags->iflag) {
|
|
|
|
case PPP_INTR_RXRDY: /* receive interrupt 0x01 (bit 0)*/
|
|
++card->statistics.isr_rx;
|
|
rx_intr(card);
|
|
break;
|
|
|
|
case PPP_INTR_TXRDY: /* transmit interrupt 0x02 (bit 1)*/
|
|
++card->statistics.isr_tx;
|
|
flags->imask &= ~PPP_INTR_TXRDY;
|
|
netif_wake_queue(dev);
|
|
break;
|
|
|
|
case PPP_INTR_CMD: /* interface command completed */
|
|
++Intr_test_counter;
|
|
++card->statistics.isr_intr_test;
|
|
break;
|
|
|
|
case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/
|
|
case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/
|
|
case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/
|
|
case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */
|
|
event_intr(card);
|
|
break;
|
|
|
|
case PPP_INTR_TIMER:
|
|
timer_intr(card);
|
|
break;
|
|
|
|
default: /* unexpected interrupt */
|
|
++card->statistics.isr_spurious;
|
|
printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
|
|
card->devname, flags->iflag);
|
|
printk(KERN_INFO "%s: ID Bytes = ",card->devname);
|
|
for(i = 0; i < 8; i ++)
|
|
printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
|
|
printk(KERN_INFO "\n");
|
|
}
|
|
|
|
card->in_isr = 0;
|
|
flags->iflag = 0;
|
|
return;
|
|
}
|
|
|
|
/*============================================================================
|
|
* Receive interrupt handler.
|
|
*/
|
|
static void rx_intr(sdla_t *card)
|
|
{
|
|
ppp_buf_ctl_t *rxbuf = card->rxmb;
|
|
struct net_device *dev = card->wandev.dev;
|
|
ppp_private_area_t *ppp_priv_area;
|
|
struct sk_buff *skb;
|
|
unsigned len;
|
|
void *buf;
|
|
int i;
|
|
ppp_flags_t *flags = card->flags;
|
|
char *ptr = &flags->iflag;
|
|
int udp_type;
|
|
|
|
|
|
if (rxbuf->flag != 0x01) {
|
|
|
|
printk(KERN_INFO
|
|
"%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
|
|
card->devname, (unsigned)rxbuf, rxbuf->flag);
|
|
|
|
printk(KERN_INFO "%s: ID Bytes = ",card->devname);
|
|
|
|
for(i = 0; i < 8; i ++)
|
|
printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
|
|
printk(KERN_INFO "\n");
|
|
|
|
++card->statistics.rx_intr_corrupt_rx_bfr;
|
|
|
|
|
|
/* Bug Fix: Mar 6 2000
|
|
* If we get a corrupted mailbox, it means 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");
|
|
ppp_set_intr_mode(card,0);
|
|
return;
|
|
}
|
|
|
|
if (dev && netif_running(dev) && dev->priv){
|
|
|
|
len = rxbuf->length;
|
|
ppp_priv_area = dev->priv;
|
|
|
|
/* Allocate socket buffer */
|
|
skb = dev_alloc_skb(len);
|
|
|
|
if (skb != NULL) {
|
|
|
|
/* Copy data to the socket buffer */
|
|
unsigned addr = rxbuf->buf.ptr;
|
|
|
|
if ((addr + len) > card->u.p.rx_top + 1) {
|
|
|
|
unsigned tmp = card->u.p.rx_top - addr + 1;
|
|
buf = skb_put(skb, tmp);
|
|
sdla_peek(&card->hw, addr, buf, tmp);
|
|
addr = card->u.p.rx_base;
|
|
len -= tmp;
|
|
}
|
|
buf = skb_put(skb, len);
|
|
sdla_peek(&card->hw, addr, buf, len);
|
|
|
|
/* Decapsulate packet */
|
|
switch (rxbuf->proto) {
|
|
|
|
case 0x00:
|
|
skb->protocol = htons(ETH_P_IP);
|
|
break;
|
|
|
|
case 0x01:
|
|
skb->protocol = htons(ETH_P_IPX);
|
|
break;
|
|
}
|
|
|
|
udp_type = udp_pkt_type( skb, card );
|
|
|
|
if (udp_type == UDP_PTPIPE_TYPE){
|
|
|
|
/* Handle a UDP Request in Timer Interrupt */
|
|
if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK, card, skb, dev,
|
|
ppp_priv_area)){
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
}
|
|
++ppp_priv_area->rx_intr_stat.rx_intr_PIPE_request;
|
|
|
|
|
|
} else if (handle_IPXWAN(skb->data,card->devname,
|
|
ppp_priv_area->enable_IPX,
|
|
ppp_priv_area->network_number,
|
|
skb->protocol)) {
|
|
|
|
/* Handle an IPXWAN packet */
|
|
if( ppp_priv_area->enable_IPX) {
|
|
|
|
/* Make sure we are not already sending */
|
|
if (!test_bit(SEND_CRIT, &card->wandev.critical)){
|
|
ppp_send(card, skb->data, skb->len, htons(ETH_P_IPX));
|
|
}
|
|
dev_kfree_skb_any(skb);
|
|
|
|
} else {
|
|
++card->wandev.stats.rx_dropped;
|
|
}
|
|
} else {
|
|
/* Pass data up the protocol stack */
|
|
skb->dev = dev;
|
|
skb->mac.raw = skb->data;
|
|
|
|
++card->wandev.stats.rx_packets;
|
|
card->wandev.stats.rx_bytes += skb->len;
|
|
++ppp_priv_area->rx_intr_stat.rx_intr_bfr_passed_to_stack;
|
|
netif_rx(skb);
|
|
dev->last_rx = jiffies;
|
|
}
|
|
|
|
} else {
|
|
|
|
if (net_ratelimit()){
|
|
printk(KERN_INFO "%s: no socket buffers available!\n",
|
|
card->devname);
|
|
}
|
|
++card->wandev.stats.rx_dropped;
|
|
++ppp_priv_area->rx_intr_stat.rx_intr_no_socket;
|
|
}
|
|
|
|
} else {
|
|
++card->statistics.rx_intr_dev_not_started;
|
|
}
|
|
|
|
/* Release buffer element and calculate a pointer to the next one */
|
|
rxbuf->flag = 0x00;
|
|
card->rxmb = ++rxbuf;
|
|
if ((void*)rxbuf > card->u.p.rxbuf_last)
|
|
card->rxmb = card->u.p.rxbuf_base;
|
|
}
|
|
|
|
|
|
void event_intr (sdla_t *card)
|
|
{
|
|
|
|
struct net_device* dev = card->wandev.dev;
|
|
ppp_private_area_t* ppp_priv_area = dev->priv;
|
|
volatile ppp_flags_t *flags = card->flags;
|
|
|
|
switch (flags->iflag){
|
|
|
|
case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/
|
|
|
|
if (net_ratelimit()){
|
|
printk (KERN_INFO "%s: Modem status: DCD=%s CTS=%s\n",
|
|
card->devname, DCD(flags->mstatus), CTS(flags->mstatus));
|
|
}
|
|
break;
|
|
|
|
case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/
|
|
|
|
NEX_PRINTK (KERN_INFO "Data link disconnected intr Cause %X\n",
|
|
flags->disc_cause);
|
|
|
|
if (flags->disc_cause &
|
|
(PPP_LOCAL_TERMINATION | PPP_DCD_CTS_DROP |
|
|
PPP_REMOTE_TERMINATION)) {
|
|
|
|
if (card->u.p.ip_mode == WANOPT_PPP_PEER) {
|
|
set_bit(0,&Read_connection_info);
|
|
}
|
|
wanpipe_set_state(card, WAN_DISCONNECTED);
|
|
|
|
show_disc_cause(card, flags->disc_cause);
|
|
ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
trigger_ppp_poll(dev);
|
|
}
|
|
break;
|
|
|
|
case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/
|
|
|
|
NEX_PRINTK (KERN_INFO "%s: PPP Link Open, LCP=%s IP=%s\n",
|
|
card->devname,LCP(flags->lcp_state),
|
|
IP(flags->ip_state));
|
|
|
|
if (flags->lcp_state == 0x09 &&
|
|
(flags->ip_state == 0x09 || flags->ipx_state == 0x09)){
|
|
|
|
/* Initialize the polling timer and set the state
|
|
* to WAN_CONNNECTED */
|
|
|
|
|
|
/* BUG FIX: When the protocol restarts, during heavy
|
|
* traffic, board tx buffers and driver tx buffers
|
|
* can go out of sync. This checks the condition
|
|
* and if the tx buffers are out of sync, the
|
|
* protocols are restarted.
|
|
* I don't know why the board tx buffer is out
|
|
* of sync. It could be that a packets is tx
|
|
* while the link is down, but that is not
|
|
* possible. The other possiblility is that the
|
|
* firmware doesn't reinitialize properly.
|
|
* FIXME: A better fix should be found.
|
|
*/
|
|
if (detect_and_fix_tx_bug(card)){
|
|
|
|
ppp_comm_disable(card);
|
|
|
|
wanpipe_set_state(card, WAN_DISCONNECTED);
|
|
|
|
ppp_priv_area->timer_int_enabled |=
|
|
TMR_INT_ENABLED_PPP_EVENT;
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
break;
|
|
}
|
|
|
|
card->state_tick = jiffies;
|
|
wanpipe_set_state(card, WAN_CONNECTED);
|
|
|
|
NEX_PRINTK(KERN_INFO "CON: L Tx: %lx B Tx: %lx || L Rx %lx B Rx %lx\n",
|
|
(unsigned long)card->u.p.txbuf, *card->u.p.txbuf_next,
|
|
(unsigned long)card->rxmb, *card->u.p.rxbuf_next);
|
|
|
|
/* Tell timer interrupt that PPP event occurred */
|
|
ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
|
|
/* If we are in PEER mode, we must first obtain the
|
|
* IP information and then go into the poll routine */
|
|
if (card->u.p.ip_mode != WANOPT_PPP_PEER){
|
|
trigger_ppp_poll(dev);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */
|
|
|
|
NEX_PRINTK(KERN_INFO "DTR Drop Timeout Interrrupt \n");
|
|
|
|
if (card->u.p.ip_mode == WANOPT_PPP_PEER) {
|
|
set_bit(0,&Read_connection_info);
|
|
}
|
|
|
|
wanpipe_set_state(card, WAN_DISCONNECTED);
|
|
|
|
show_disc_cause(card, flags->disc_cause);
|
|
ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
trigger_ppp_poll(dev);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: Error, Invalid PPP Event\n",card->devname);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/* TIMER INTERRUPT */
|
|
|
|
void timer_intr (sdla_t *card)
|
|
{
|
|
|
|
struct net_device* dev = card->wandev.dev;
|
|
ppp_private_area_t* ppp_priv_area = dev->priv;
|
|
ppp_flags_t *flags = card->flags;
|
|
|
|
|
|
if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG){
|
|
if (!config_ppp(card)){
|
|
ppp_priv_area->timer_int_enabled &=
|
|
~TMR_INT_ENABLED_CONFIG;
|
|
}
|
|
}
|
|
|
|
/* Update statistics */
|
|
if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE){
|
|
ppp_get_err_stats(card);
|
|
if(!(--ppp_priv_area->update_comms_stats)){
|
|
ppp_priv_area->timer_int_enabled &=
|
|
~TMR_INT_ENABLED_UPDATE;
|
|
}
|
|
}
|
|
|
|
/* PPIPEMON UDP request */
|
|
|
|
if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP){
|
|
process_udp_mgmt_pkt(card,dev, ppp_priv_area);
|
|
ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
|
|
}
|
|
|
|
/* PPP Event */
|
|
if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_PPP_EVENT){
|
|
|
|
if (card->wandev.state == WAN_DISCONNECTED){
|
|
retrigger_comm(card);
|
|
}
|
|
|
|
/* If the state is CONNECTING, it means that communicatins were
|
|
* enabled. When the remote side enables its comminication we
|
|
* should get an interrupt PPP_INTR_OPEN, thus turn off polling
|
|
*/
|
|
|
|
else if (card->wandev.state == WAN_CONNECTING){
|
|
/* Turn off the timer interrupt */
|
|
ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT;
|
|
}
|
|
|
|
/* If state is connected and we are in PEER mode
|
|
* poll for an IP address which will be provided by remote end.
|
|
*/
|
|
else if ((card->wandev.state == WAN_CONNECTED &&
|
|
card->u.p.ip_mode == WANOPT_PPP_PEER) &&
|
|
test_bit(0,&Read_connection_info)){
|
|
|
|
card->state_tick = jiffies;
|
|
if (read_connection_info (card)){
|
|
printk(KERN_INFO "%s: Failed to read PEER IP Addresses\n",
|
|
card->devname);
|
|
}else{
|
|
clear_bit(0,&Read_connection_info);
|
|
set_bit(1,&Read_connection_info);
|
|
trigger_ppp_poll(dev);
|
|
}
|
|
}else{
|
|
//FIXME Put the comment back int
|
|
ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT;
|
|
}
|
|
|
|
}/* End of PPP_EVENT */
|
|
|
|
|
|
/* Only disable the timer interrupt if there are no udp, statistic */
|
|
/* updates or events pending */
|
|
if(!ppp_priv_area->timer_int_enabled) {
|
|
flags->imask &= ~PPP_INTR_TIMER;
|
|
}
|
|
}
|
|
|
|
|
|
static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_IPX, unsigned long network_number, unsigned short proto)
|
|
{
|
|
int i;
|
|
|
|
if( proto == htons(ETH_P_IPX) ) {
|
|
//It's an IPX packet
|
|
if(!enable_IPX) {
|
|
//Return 1 so we don't pass it up the stack.
|
|
return 1;
|
|
}
|
|
} else {
|
|
//It's not IPX so pass it up the stack.
|
|
return 0;
|
|
}
|
|
|
|
if( sendpacket[16] == 0x90 &&
|
|
sendpacket[17] == 0x04)
|
|
{
|
|
//It's IPXWAN
|
|
|
|
if( sendpacket[2] == 0x02 &&
|
|
sendpacket[34] == 0x00)
|
|
{
|
|
//It's a timer request packet
|
|
printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",devname);
|
|
|
|
//Go through the routing options and answer no to every
|
|
//option except Unnumbered RIP/SAP
|
|
for(i = 41; sendpacket[i] == 0x00; i += 5)
|
|
{
|
|
//0x02 is the option for Unnumbered RIP/SAP
|
|
if( sendpacket[i + 4] != 0x02)
|
|
{
|
|
sendpacket[i + 1] = 0;
|
|
}
|
|
}
|
|
|
|
//Skip over the extended Node ID option
|
|
if( sendpacket[i] == 0x04 )
|
|
{
|
|
i += 8;
|
|
}
|
|
|
|
//We also want to turn off all header compression opt.
|
|
for(; sendpacket[i] == 0x80 ;)
|
|
{
|
|
sendpacket[i + 1] = 0;
|
|
i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
|
|
}
|
|
|
|
//Set the packet type to timer response
|
|
sendpacket[34] = 0x01;
|
|
|
|
printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",devname);
|
|
}
|
|
else if( sendpacket[34] == 0x02 )
|
|
{
|
|
//This is an information request packet
|
|
printk(KERN_INFO "%s: Received IPXWAN Information Request packet\n",devname);
|
|
|
|
//Set the packet type to information response
|
|
sendpacket[34] = 0x03;
|
|
|
|
//Set the router name
|
|
sendpacket[51] = 'P';
|
|
sendpacket[52] = 'T';
|
|
sendpacket[53] = 'P';
|
|
sendpacket[54] = 'I';
|
|
sendpacket[55] = 'P';
|
|
sendpacket[56] = 'E';
|
|
sendpacket[57] = '-';
|
|
sendpacket[58] = CVHexToAscii(network_number >> 28);
|
|
sendpacket[59] = CVHexToAscii((network_number & 0x0F000000)>> 24);
|
|
sendpacket[60] = CVHexToAscii((network_number & 0x00F00000)>> 20);
|
|
sendpacket[61] = CVHexToAscii((network_number & 0x000F0000)>> 16);
|
|
sendpacket[62] = CVHexToAscii((network_number & 0x0000F000)>> 12);
|
|
sendpacket[63] = CVHexToAscii((network_number & 0x00000F00)>> 8);
|
|
sendpacket[64] = CVHexToAscii((network_number & 0x000000F0)>> 4);
|
|
sendpacket[65] = CVHexToAscii(network_number & 0x0000000F);
|
|
for(i = 66; i < 99; i+= 1)
|
|
{
|
|
sendpacket[i] = 0;
|
|
}
|
|
|
|
printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",devname);
|
|
}
|
|
else
|
|
{
|
|
printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
|
|
return 0;
|
|
}
|
|
|
|
//Set the WNodeID to our network address
|
|
sendpacket[35] = (unsigned char)(network_number >> 24);
|
|
sendpacket[36] = (unsigned char)((network_number & 0x00FF0000) >> 16);
|
|
sendpacket[37] = (unsigned char)((network_number & 0x0000FF00) >> 8);
|
|
sendpacket[38] = (unsigned char)(network_number & 0x000000FF);
|
|
|
|
return 1;
|
|
} else {
|
|
//If we get here it's an IPX-data packet, so it'll get passed up the stack.
|
|
|
|
//switch the network numbers
|
|
switch_net_numbers(sendpacket, network_number, 1);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/****** Background Polling Routines ****************************************/
|
|
|
|
/* All polling functions are invoked by the TIMER interrupt in the wpp_isr
|
|
* routine.
|
|
*/
|
|
|
|
/*============================================================================
|
|
* Monitor active link phase.
|
|
*/
|
|
static void process_route (sdla_t *card)
|
|
{
|
|
ppp_flags_t *flags = card->flags;
|
|
struct net_device *dev = card->wandev.dev;
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
|
|
if ((card->u.p.ip_mode == WANOPT_PPP_PEER) &&
|
|
(flags->ip_state == 0x09)){
|
|
|
|
/* We get ip_local from the firmware in PEER mode.
|
|
* Therefore, if ip_local is 0, we failed to obtain
|
|
* the remote IP address. */
|
|
if (ppp_priv_area->ip_local == 0)
|
|
return;
|
|
|
|
printk(KERN_INFO "%s: IPCP State Opened.\n", card->devname);
|
|
if (read_info( card )) {
|
|
printk(KERN_INFO
|
|
"%s: An error occurred in IP assignment.\n",
|
|
card->devname);
|
|
} else {
|
|
struct in_device *in_dev = dev->ip_ptr;
|
|
if (in_dev != NULL ) {
|
|
struct in_ifaddr *ifa = in_dev->ifa_list;
|
|
|
|
printk(KERN_INFO "%s: Assigned Lcl. Addr: %u.%u.%u.%u\n",
|
|
card->devname, NIPQUAD(ifa->ifa_local));
|
|
printk(KERN_INFO "%s: Assigned Rmt. Addr: %u.%u.%u.%u\n",
|
|
card->devname, NIPQUAD(ifa->ifa_address));
|
|
}else{
|
|
printk(KERN_INFO
|
|
"%s: Error: Failed to add a route for PPP interface %s\n",
|
|
card->devname,dev->name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*============================================================================
|
|
* Monitor physical link disconnected phase.
|
|
* o if interface is up and the hold-down timeout has expired, then retry
|
|
* connection.
|
|
*/
|
|
static void retrigger_comm(sdla_t *card)
|
|
{
|
|
struct net_device *dev = card->wandev.dev;
|
|
|
|
if (dev && ((jiffies - card->state_tick) > HOLD_DOWN_TIME)) {
|
|
|
|
wanpipe_set_state(card, WAN_CONNECTING);
|
|
|
|
if(ppp_comm_enable(card) == CMD_OK){
|
|
init_ppp_tx_rx_buff( card );
|
|
}
|
|
}
|
|
}
|
|
|
|
/****** Miscellaneous Functions *********************************************/
|
|
|
|
/*============================================================================
|
|
* Configure S508 adapter.
|
|
*/
|
|
static int config508(struct net_device *dev, sdla_t *card)
|
|
{
|
|
ppp508_conf_t cfg;
|
|
struct in_device *in_dev = dev->ip_ptr;
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
|
|
/* Prepare PPP configuration structure */
|
|
memset(&cfg, 0, sizeof(ppp508_conf_t));
|
|
|
|
if (card->wandev.clocking)
|
|
cfg.line_speed = card->wandev.bps;
|
|
|
|
if (card->wandev.interface == WANOPT_RS232)
|
|
cfg.conf_flags |= INTERFACE_LEVEL_RS232;
|
|
|
|
|
|
cfg.conf_flags |= DONT_TERMINATE_LNK_MAX_CONFIG; /*send Configure-Request packets forever*/
|
|
cfg.txbuf_percent = PERCENT_TX_BUFF; /* % of Tx bufs */
|
|
cfg.mtu_local = card->wandev.mtu;
|
|
cfg.mtu_remote = card->wandev.mtu; /* Default */
|
|
cfg.restart_tmr = TIME_BETWEEN_CONF_REQ; /* 30 = 3sec */
|
|
cfg.auth_rsrt_tmr = TIME_BETWEEN_PAP_CHAP_REQ; /* 30 = 3sec */
|
|
cfg.auth_wait_tmr = WAIT_PAP_CHAP_WITHOUT_REPLY; /* 300 = 30s */
|
|
cfg.mdm_fail_tmr = WAIT_AFTER_DCD_CTS_LOW; /* 5 = 0.5s */
|
|
cfg.dtr_drop_tmr = TIME_DCD_CTS_LOW_AFTER_LNK_DOWN; /* 10 = 1s */
|
|
cfg.connect_tmout = WAIT_DCD_HIGH_AFTER_ENABLE_COMM; /* 900 = 90s */
|
|
cfg.conf_retry = MAX_CONF_REQ_WITHOUT_REPLY; /* 10 = 1s */
|
|
cfg.term_retry = MAX_TERM_REQ_WITHOUT_REPLY; /* 2 times */
|
|
cfg.fail_retry = NUM_CONF_NAK_WITHOUT_REPLY; /* 5 times */
|
|
cfg.auth_retry = NUM_AUTH_REQ_WITHOUT_REPLY; /* 10 times */
|
|
|
|
|
|
if( !card->u.p.authenticator ) {
|
|
printk(KERN_INFO "%s: Device is not configured as an authenticator\n",
|
|
card->devname);
|
|
cfg.auth_options = NO_AUTHENTICATION;
|
|
}else{
|
|
printk(KERN_INFO "%s: Device is configured as an authenticator\n",
|
|
card->devname);
|
|
cfg.auth_options = INBOUND_AUTH;
|
|
}
|
|
|
|
if( ppp_priv_area->pap == WANOPT_YES){
|
|
cfg.auth_options |=PAP_AUTH;
|
|
printk(KERN_INFO "%s: Pap enabled\n", card->devname);
|
|
}
|
|
if( ppp_priv_area->chap == WANOPT_YES){
|
|
cfg.auth_options |= CHAP_AUTH;
|
|
printk(KERN_INFO "%s: Chap enabled\n", card->devname);
|
|
}
|
|
|
|
|
|
if (ppp_priv_area->enable_IPX == WANOPT_YES){
|
|
printk(KERN_INFO "%s: Enabling IPX Protocol\n",card->devname);
|
|
cfg.ipx_options = ENABLE_IPX | ROUTING_PROT_DEFAULT;
|
|
}else{
|
|
cfg.ipx_options = DISABLE_IPX;
|
|
}
|
|
|
|
switch (card->u.p.ip_mode) {
|
|
|
|
case WANOPT_PPP_STATIC:
|
|
|
|
printk(KERN_INFO "%s: PPP IP Mode: STATIC\n",card->devname);
|
|
cfg.ip_options = L_AND_R_IP_NO_ASSIG |
|
|
ENABLE_IP;
|
|
cfg.ip_local = in_dev->ifa_list->ifa_local;
|
|
cfg.ip_remote = in_dev->ifa_list->ifa_address;
|
|
/* Debugging code used to check that IP addresses
|
|
* obtained from the kernel are correct */
|
|
|
|
NEX_PRINTK(KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n",
|
|
NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name);
|
|
break;
|
|
|
|
case WANOPT_PPP_HOST:
|
|
|
|
printk(KERN_INFO "%s: PPP IP Mode: HOST\n",card->devname);
|
|
cfg.ip_options = L_IP_LOCAL_ASSIG |
|
|
R_IP_LOCAL_ASSIG |
|
|
ENABLE_IP;
|
|
cfg.ip_local = in_dev->ifa_list->ifa_local;
|
|
cfg.ip_remote = in_dev->ifa_list->ifa_address;
|
|
/* Debugging code used to check that IP addresses
|
|
* obtained from the kernel are correct */
|
|
NEX_PRINTK (KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n",
|
|
NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name);
|
|
|
|
break;
|
|
|
|
case WANOPT_PPP_PEER:
|
|
|
|
printk(KERN_INFO "%s: PPP IP Mode: PEER\n",card->devname);
|
|
cfg.ip_options = L_IP_REMOTE_ASSIG |
|
|
R_IP_REMOTE_ASSIG |
|
|
ENABLE_IP;
|
|
cfg.ip_local = 0x00;
|
|
cfg.ip_remote = 0x00;
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_INFO "%s: ERROR: Unsupported PPP Mode Selected\n",
|
|
card->devname);
|
|
printk(KERN_INFO "%s: PPP IP Modes: STATIC, PEER or HOST\n",
|
|
card->devname);
|
|
return 1;
|
|
}
|
|
|
|
return ppp_configure(card, &cfg);
|
|
}
|
|
|
|
/*============================================================================
|
|
* Show disconnection cause.
|
|
*/
|
|
static void show_disc_cause(sdla_t *card, unsigned cause)
|
|
{
|
|
if (cause & 0x0802)
|
|
|
|
printk(KERN_INFO "%s: link terminated by peer\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0004)
|
|
|
|
printk(KERN_INFO "%s: link terminated by user\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0008)
|
|
|
|
printk(KERN_INFO "%s: authentication failed\n", card->devname);
|
|
|
|
else if (cause & 0x0010)
|
|
|
|
printk(KERN_INFO
|
|
"%s: authentication protocol negotiation failed\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0020)
|
|
|
|
printk(KERN_INFO
|
|
"%s: peer's request for authentication rejected\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0040)
|
|
|
|
printk(KERN_INFO "%s: MRU option rejected by peer\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0080)
|
|
|
|
printk(KERN_INFO "%s: peer's MRU was too small\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0100)
|
|
|
|
printk(KERN_INFO "%s: failed to negotiate peer's LCP options\n",
|
|
card->devname);
|
|
|
|
else if (cause & 0x0200)
|
|
|
|
printk(KERN_INFO "%s: failed to negotiate peer's IPCP options\n"
|
|
, card->devname);
|
|
|
|
else if (cause & 0x0400)
|
|
|
|
printk(KERN_INFO
|
|
"%s: failed to negotiate peer's IPXCP options\n",
|
|
card->devname);
|
|
}
|
|
|
|
/*=============================================================================
|
|
* Process UDP call of type PTPIPEAB.
|
|
*/
|
|
static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev,
|
|
ppp_private_area_t *ppp_priv_area )
|
|
{
|
|
unsigned char buf2[5];
|
|
unsigned char *buf;
|
|
unsigned int frames, len;
|
|
struct sk_buff *new_skb;
|
|
unsigned short data_length, buffer_length, real_len;
|
|
unsigned long data_ptr;
|
|
int udp_mgmt_req_valid = 1;
|
|
ppp_mbox_t *mbox = card->mbox;
|
|
struct timeval tv;
|
|
int err;
|
|
ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t*)&ppp_priv_area->udp_pkt_data;
|
|
|
|
memcpy(&buf2, &card->wandev.udp_port, 2 );
|
|
|
|
|
|
if(ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
|
|
|
|
switch(ppp_udp_pkt->cblock.command) {
|
|
|
|
case PPIPE_GET_IBA_DATA:
|
|
case PPP_READ_CONFIG:
|
|
case PPP_GET_CONNECTION_INFO:
|
|
case PPIPE_ROUTER_UP_TIME:
|
|
case PPP_READ_STATISTICS:
|
|
case PPP_READ_ERROR_STATS:
|
|
case PPP_READ_PACKET_STATS:
|
|
case PPP_READ_LCP_STATS:
|
|
case PPP_READ_IPCP_STATS:
|
|
case PPP_READ_IPXCP_STATS:
|
|
case PPP_READ_PAP_STATS:
|
|
case PPP_READ_CHAP_STATS:
|
|
case PPP_READ_CODE_VERSION:
|
|
udp_mgmt_req_valid = 1;
|
|
break;
|
|
|
|
default:
|
|
udp_mgmt_req_valid = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(!udp_mgmt_req_valid) {
|
|
|
|
/* set length to 0 */
|
|
ppp_udp_pkt->cblock.length = 0x00;
|
|
|
|
/* set return code */
|
|
ppp_udp_pkt->cblock.result = 0xCD;
|
|
++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_direction_err;
|
|
|
|
if (net_ratelimit()){
|
|
printk(KERN_INFO
|
|
"%s: Warning, Illegal UDP command attempted from network: %x\n",
|
|
card->devname,ppp_udp_pkt->cblock.command);
|
|
}
|
|
} else {
|
|
/* Initialize the trace element */
|
|
trace_element_t trace_element;
|
|
|
|
switch (ppp_udp_pkt->cblock.command){
|
|
|
|
/* PPIPE_ENABLE_TRACING */
|
|
case PPIPE_ENABLE_TRACING:
|
|
if (!card->TracingEnabled) {
|
|
|
|
/* OPERATE_DATALINE_MONITOR */
|
|
mbox->cmd.command = PPP_DATALINE_MONITOR;
|
|
mbox->cmd.length = 0x01;
|
|
mbox->data[0] = ppp_udp_pkt->data[0];
|
|
err = sdla_exec(mbox) ?
|
|
mbox->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK) {
|
|
|
|
ppp_error(card, err, mbox);
|
|
card->TracingEnabled = 0;
|
|
|
|
/* set the return code */
|
|
|
|
ppp_udp_pkt->cblock.result = mbox->cmd.result;
|
|
mbox->cmd.length = 0;
|
|
break;
|
|
}
|
|
|
|
sdla_peek(&card->hw, 0xC000, &buf2, 2);
|
|
|
|
ppp_priv_area->curr_trace_addr = 0;
|
|
memcpy(&ppp_priv_area->curr_trace_addr, &buf2, 2);
|
|
ppp_priv_area->start_trace_addr =
|
|
ppp_priv_area->curr_trace_addr;
|
|
ppp_priv_area->end_trace_addr =
|
|
ppp_priv_area->start_trace_addr + END_OFFSET;
|
|
|
|
/* MAX_SEND_BUFFER_SIZE - 28 (IP header)
|
|
- 32 (ppipemon CBLOCK) */
|
|
available_buffer_space = MAX_LGTH_UDP_MGNT_PKT -
|
|
sizeof(ip_pkt_t)-
|
|
sizeof(udp_pkt_t)-
|
|
sizeof(wp_mgmt_t)-
|
|
sizeof(cblock_t);
|
|
}
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
mbox->cmd.length = 0;
|
|
card->TracingEnabled = 1;
|
|
break;
|
|
|
|
/* PPIPE_DISABLE_TRACING */
|
|
case PPIPE_DISABLE_TRACING:
|
|
|
|
if(card->TracingEnabled) {
|
|
|
|
/* OPERATE_DATALINE_MONITOR */
|
|
mbox->cmd.command = 0x33;
|
|
mbox->cmd.length = 1;
|
|
mbox->data[0] = 0x00;
|
|
err = sdla_exec(mbox) ?
|
|
mbox->cmd.result : CMD_TIMEOUT;
|
|
|
|
}
|
|
|
|
/*set return code*/
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
mbox->cmd.length = 0;
|
|
card->TracingEnabled = 0;
|
|
break;
|
|
|
|
/* PPIPE_GET_TRACE_INFO */
|
|
case PPIPE_GET_TRACE_INFO:
|
|
|
|
if(!card->TracingEnabled) {
|
|
/* set return code */
|
|
ppp_udp_pkt->cblock.result = 1;
|
|
mbox->cmd.length = 0;
|
|
}
|
|
|
|
buffer_length = 0;
|
|
|
|
/* frames < 62, where 62 is the number of trace
|
|
information elements. There is in total 496
|
|
bytes of space and each trace information
|
|
element is 8 bytes.
|
|
*/
|
|
for ( frames=0; frames<62; frames++) {
|
|
|
|
trace_pkt_t *trace_pkt = (trace_pkt_t *)
|
|
&ppp_udp_pkt->data[buffer_length];
|
|
|
|
/* Read the whole trace packet */
|
|
sdla_peek(&card->hw, ppp_priv_area->curr_trace_addr,
|
|
&trace_element, sizeof(trace_element_t));
|
|
|
|
/* no data on board so exit */
|
|
if( trace_element.opp_flag == 0x00 )
|
|
break;
|
|
|
|
data_ptr = trace_element.trace_data_ptr;
|
|
|
|
/* See if there is actual data on the trace buffer */
|
|
if (data_ptr){
|
|
data_length = trace_element.trace_length;
|
|
}else{
|
|
data_length = 0;
|
|
ppp_udp_pkt->data[0] |= 0x02;
|
|
}
|
|
|
|
//FIXME: Do we need this check
|
|
if ((available_buffer_space - buffer_length)
|
|
< (sizeof(trace_element_t)+1)){
|
|
|
|
/*indicate we have more frames
|
|
* on board and exit
|
|
*/
|
|
ppp_udp_pkt->data[0] |= 0x02;
|
|
break;
|
|
}
|
|
|
|
trace_pkt->status = trace_element.trace_type;
|
|
trace_pkt->time_stamp = trace_element.trace_time_stamp;
|
|
trace_pkt->real_length = trace_element.trace_length;
|
|
|
|
real_len = trace_element.trace_length;
|
|
|
|
if(data_ptr == 0){
|
|
trace_pkt->data_avail = 0x00;
|
|
}else{
|
|
/* we can take it next time */
|
|
if ((available_buffer_space - buffer_length)<
|
|
(real_len + sizeof(trace_pkt_t))){
|
|
|
|
ppp_udp_pkt->data[0] |= 0x02;
|
|
break;
|
|
}
|
|
trace_pkt->data_avail = 0x01;
|
|
|
|
/* get the data */
|
|
sdla_peek(&card->hw, data_ptr,
|
|
&trace_pkt->data,
|
|
real_len);
|
|
}
|
|
/* zero the opp flag to
|
|
show we got the frame */
|
|
buf2[0] = 0x00;
|
|
sdla_poke(&card->hw, ppp_priv_area->curr_trace_addr,
|
|
&buf2, 1);
|
|
|
|
/* now move onto the next
|
|
frame */
|
|
ppp_priv_area->curr_trace_addr += 8;
|
|
|
|
/* check if we passed the last address */
|
|
if ( ppp_priv_area->curr_trace_addr >=
|
|
ppp_priv_area->end_trace_addr){
|
|
|
|
ppp_priv_area->curr_trace_addr =
|
|
ppp_priv_area->start_trace_addr;
|
|
}
|
|
|
|
/* update buffer length and make sure its even */
|
|
|
|
if ( trace_pkt->data_avail == 0x01 ) {
|
|
buffer_length += real_len - 1;
|
|
}
|
|
|
|
/* for the header */
|
|
buffer_length += 8;
|
|
|
|
if( buffer_length & 0x0001 )
|
|
buffer_length += 1;
|
|
}
|
|
|
|
/* ok now set the total number of frames passed
|
|
in the high 5 bits */
|
|
ppp_udp_pkt->data[0] |= (frames << 2);
|
|
|
|
/* set the data length */
|
|
mbox->cmd.length = buffer_length;
|
|
ppp_udp_pkt->cblock.length = buffer_length;
|
|
|
|
/* set return code */
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
break;
|
|
|
|
/* PPIPE_GET_IBA_DATA */
|
|
case PPIPE_GET_IBA_DATA:
|
|
|
|
mbox->cmd.length = 0x09;
|
|
|
|
sdla_peek(&card->hw, 0xF003, &ppp_udp_pkt->data,
|
|
mbox->cmd.length);
|
|
|
|
/* set the length of the data */
|
|
ppp_udp_pkt->cblock.length = 0x09;
|
|
|
|
/* set return code */
|
|
ppp_udp_pkt->cblock.result = 0x00;
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
break;
|
|
|
|
/* PPIPE_FT1_READ_STATUS */
|
|
case PPIPE_FT1_READ_STATUS:
|
|
sdla_peek(&card->hw, 0xF020, &ppp_udp_pkt->data[0], 2);
|
|
ppp_udp_pkt->cblock.length = mbox->cmd.length = 2;
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
break;
|
|
|
|
case PPIPE_FLUSH_DRIVER_STATS:
|
|
init_ppp_priv_struct( ppp_priv_area );
|
|
init_global_statistics( card );
|
|
mbox->cmd.length = 0;
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
break;
|
|
|
|
|
|
case PPIPE_ROUTER_UP_TIME:
|
|
|
|
do_gettimeofday( &tv );
|
|
ppp_priv_area->router_up_time = tv.tv_sec -
|
|
ppp_priv_area->router_start_time;
|
|
*(unsigned long *)&ppp_udp_pkt->data = ppp_priv_area->router_up_time;
|
|
mbox->cmd.length = 4;
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
break;
|
|
|
|
/* PPIPE_DRIVER_STATISTICS */
|
|
case PPIPE_DRIVER_STAT_IFSEND:
|
|
memcpy(&ppp_udp_pkt->data, &ppp_priv_area->if_send_stat,
|
|
sizeof(if_send_stat_t));
|
|
|
|
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
ppp_udp_pkt->cblock.length = sizeof(if_send_stat_t);
|
|
mbox->cmd.length = sizeof(if_send_stat_t);
|
|
break;
|
|
|
|
case PPIPE_DRIVER_STAT_INTR:
|
|
memcpy(&ppp_udp_pkt->data, &card->statistics,
|
|
sizeof(global_stats_t));
|
|
|
|
memcpy(&ppp_udp_pkt->data+sizeof(global_stats_t),
|
|
&ppp_priv_area->rx_intr_stat,
|
|
sizeof(rx_intr_stat_t));
|
|
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+
|
|
sizeof(rx_intr_stat_t);
|
|
mbox->cmd.length = ppp_udp_pkt->cblock.length;
|
|
break;
|
|
|
|
case PPIPE_DRIVER_STAT_GEN:
|
|
memcpy( &ppp_udp_pkt->data,
|
|
&ppp_priv_area->pipe_mgmt_stat,
|
|
sizeof(pipe_mgmt_stat_t));
|
|
|
|
memcpy(&ppp_udp_pkt->data+sizeof(pipe_mgmt_stat_t),
|
|
&card->statistics, sizeof(global_stats_t));
|
|
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+
|
|
sizeof(rx_intr_stat_t);
|
|
mbox->cmd.length = ppp_udp_pkt->cblock.length;
|
|
break;
|
|
|
|
|
|
/* FT1 MONITOR STATUS */
|
|
case FT1_MONITOR_STATUS_CTRL:
|
|
|
|
/* Enable FT1 MONITOR STATUS */
|
|
if( ppp_udp_pkt->data[0] == 1) {
|
|
|
|
if( rCount++ != 0 ) {
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
mbox->cmd.length = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Disable FT1 MONITOR STATUS */
|
|
if( ppp_udp_pkt->data[0] == 0) {
|
|
|
|
if( --rCount != 0) {
|
|
ppp_udp_pkt->cblock.result = 0;
|
|
mbox->cmd.length = 1;
|
|
break;
|
|
}
|
|
}
|
|
goto udp_dflt_cmd;
|
|
|
|
/* WARNING: FIXME: This should be fixed.
|
|
* The FT1 Status Ctrl doesn't have a break
|
|
* statment. Thus, no code must be inserted
|
|
* HERE: between default and above case statement */
|
|
|
|
default:
|
|
udp_dflt_cmd:
|
|
|
|
/* it's a board command */
|
|
mbox->cmd.command = ppp_udp_pkt->cblock.command;
|
|
mbox->cmd.length = ppp_udp_pkt->cblock.length;
|
|
|
|
if(mbox->cmd.length) {
|
|
memcpy(&mbox->data,(unsigned char *)ppp_udp_pkt->data,
|
|
mbox->cmd.length);
|
|
}
|
|
|
|
/* run the command on the board */
|
|
err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK) {
|
|
|
|
ppp_error(card, err, mbox);
|
|
++ppp_priv_area->pipe_mgmt_stat.
|
|
UDP_PIPE_mgmt_adptr_cmnd_timeout;
|
|
break;
|
|
}
|
|
|
|
++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_cmnd_OK;
|
|
|
|
/* copy the result back to our buffer */
|
|
memcpy(&ppp_udp_pkt->cblock,mbox, sizeof(cblock_t));
|
|
|
|
if(mbox->cmd.length) {
|
|
memcpy(&ppp_udp_pkt->data,&mbox->data,mbox->cmd.length);
|
|
}
|
|
|
|
} /* end of switch */
|
|
} /* end of else */
|
|
|
|
/* Fill UDP TTL */
|
|
ppp_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
|
|
len = reply_udp(ppp_priv_area->udp_pkt_data, mbox->cmd.length);
|
|
|
|
if (ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
|
|
|
|
/* Make sure we are not already sending */
|
|
if (!test_bit(SEND_CRIT,&card->wandev.critical)){
|
|
++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_adptr;
|
|
ppp_send(card,ppp_priv_area->udp_pkt_data,len,ppp_priv_area->protocol);
|
|
}
|
|
|
|
} 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,ppp_priv_area->udp_pkt_data, len);
|
|
|
|
++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_stack;
|
|
|
|
/* Decapsulate packet and pass it up the protocol
|
|
stack */
|
|
new_skb->protocol = htons(ETH_P_IP);
|
|
new_skb->dev = dev;
|
|
new_skb->mac.raw = new_skb->data;
|
|
netif_rx(new_skb);
|
|
dev->last_rx = jiffies;
|
|
|
|
} else {
|
|
|
|
++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_no_socket;
|
|
printk(KERN_INFO "no socket buffers available!\n");
|
|
}
|
|
}
|
|
|
|
ppp_priv_area->udp_pkt_lgth = 0;
|
|
|
|
return;
|
|
}
|
|
|
|
/*=============================================================================
|
|
* Initial the ppp_private_area structure.
|
|
*/
|
|
static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area )
|
|
{
|
|
|
|
memset(&ppp_priv_area->if_send_stat, 0, sizeof(if_send_stat_t));
|
|
memset(&ppp_priv_area->rx_intr_stat, 0, sizeof(rx_intr_stat_t));
|
|
memset(&ppp_priv_area->pipe_mgmt_stat, 0, sizeof(pipe_mgmt_stat_t));
|
|
}
|
|
|
|
/*============================================================================
|
|
* Initialize Global Statistics
|
|
*/
|
|
static void init_global_statistics( sdla_t *card )
|
|
{
|
|
memset(&card->statistics, 0, sizeof(global_stats_t));
|
|
}
|
|
|
|
/*============================================================================
|
|
* Initialize Receive and Transmit Buffers.
|
|
*/
|
|
static void init_ppp_tx_rx_buff( sdla_t *card )
|
|
{
|
|
ppp508_buf_info_t* info;
|
|
|
|
if (card->hw.type == SDLA_S514) {
|
|
|
|
info = (void*)(card->hw.dpmbase + PPP514_BUF_OFFS);
|
|
|
|
card->u.p.txbuf_base = (void*)(card->hw.dpmbase +
|
|
info->txb_ptr);
|
|
|
|
card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base +
|
|
(info->txb_num - 1);
|
|
|
|
card->u.p.rxbuf_base = (void*)(card->hw.dpmbase +
|
|
info->rxb_ptr);
|
|
|
|
card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base +
|
|
(info->rxb_num - 1);
|
|
|
|
} else {
|
|
|
|
info = (void*)(card->hw.dpmbase + PPP508_BUF_OFFS);
|
|
|
|
card->u.p.txbuf_base = (void*)(card->hw.dpmbase +
|
|
(info->txb_ptr - PPP508_MB_VECT));
|
|
|
|
card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base +
|
|
(info->txb_num - 1);
|
|
|
|
card->u.p.rxbuf_base = (void*)(card->hw.dpmbase +
|
|
(info->rxb_ptr - PPP508_MB_VECT));
|
|
|
|
card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base +
|
|
(info->rxb_num - 1);
|
|
}
|
|
|
|
card->u.p.txbuf_next = (unsigned long*)&info->txb_nxt;
|
|
card->u.p.rxbuf_next = (unsigned long*)&info->rxb1_ptr;
|
|
|
|
card->u.p.rx_base = info->rxb_base;
|
|
card->u.p.rx_top = info->rxb_end;
|
|
|
|
card->u.p.txbuf = card->u.p.txbuf_base;
|
|
card->rxmb = card->u.p.rxbuf_base;
|
|
|
|
}
|
|
|
|
/*=============================================================================
|
|
* Read Connection Information (ie for Remote IP address assginment).
|
|
* Called when ppp interface connected.
|
|
*/
|
|
static int read_info( sdla_t *card )
|
|
{
|
|
struct net_device *dev = card->wandev.dev;
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
int err;
|
|
|
|
struct ifreq if_info;
|
|
struct sockaddr_in *if_data1, *if_data2;
|
|
mm_segment_t fs;
|
|
|
|
/* Set Local and remote addresses */
|
|
memset(&if_info, 0, sizeof(if_info));
|
|
strcpy(if_info.ifr_name, dev->name);
|
|
|
|
|
|
fs = get_fs();
|
|
set_fs(get_ds()); /* get user space block */
|
|
|
|
/* Change the local and remote ip address of the interface.
|
|
* This will also add in the destination route.
|
|
*/
|
|
if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
|
|
if_data1->sin_addr.s_addr = ppp_priv_area->ip_local;
|
|
if_data1->sin_family = AF_INET;
|
|
err = devinet_ioctl( SIOCSIFADDR, &if_info );
|
|
if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
|
|
if_data2->sin_addr.s_addr = ppp_priv_area->ip_remote;
|
|
if_data2->sin_family = AF_INET;
|
|
err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
|
|
|
|
set_fs(fs); /* restore old block */
|
|
|
|
if (err) {
|
|
printk (KERN_INFO "%s: Adding of route failed: %i\n",
|
|
card->devname,err);
|
|
printk (KERN_INFO "%s: Local : %u.%u.%u.%u\n",
|
|
card->devname,NIPQUAD(ppp_priv_area->ip_local));
|
|
printk (KERN_INFO "%s: Remote: %u.%u.%u.%u\n",
|
|
card->devname,NIPQUAD(ppp_priv_area->ip_remote));
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/*=============================================================================
|
|
* Remove Dynamic Route.
|
|
* Called when ppp interface disconnected.
|
|
*/
|
|
|
|
static void remove_route( sdla_t *card )
|
|
{
|
|
|
|
struct net_device *dev = card->wandev.dev;
|
|
long ip_addr;
|
|
int err;
|
|
|
|
mm_segment_t fs;
|
|
struct ifreq if_info;
|
|
struct sockaddr_in *if_data1;
|
|
struct in_device *in_dev = dev->ip_ptr;
|
|
struct in_ifaddr *ifa = in_dev->ifa_list;
|
|
|
|
ip_addr = ifa->ifa_local;
|
|
|
|
/* Set Local and remote addresses */
|
|
memset(&if_info, 0, sizeof(if_info));
|
|
strcpy(if_info.ifr_name, dev->name);
|
|
|
|
fs = get_fs();
|
|
set_fs(get_ds()); /* get user space block */
|
|
|
|
/* Change the local ip address of the interface to 0.
|
|
* This will also delete the destination route.
|
|
*/
|
|
if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
|
|
if_data1->sin_addr.s_addr = 0;
|
|
if_data1->sin_family = AF_INET;
|
|
err = devinet_ioctl( SIOCSIFADDR, &if_info );
|
|
|
|
set_fs(fs); /* restore old block */
|
|
|
|
|
|
if (err) {
|
|
printk (KERN_INFO "%s: Deleting dynamic route failed %d!\n",
|
|
card->devname, err);
|
|
return;
|
|
}else{
|
|
printk (KERN_INFO "%s: PPP Deleting dynamic route %u.%u.%u.%u successfuly\n",
|
|
card->devname, NIPQUAD(ip_addr));
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*=============================================================================
|
|
* Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR
|
|
* _TEST_COUNTER times.
|
|
*/
|
|
static int intr_test( sdla_t *card )
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
int err,i;
|
|
|
|
err = ppp_set_intr_mode( card, 0x08 );
|
|
|
|
if (err == CMD_OK) {
|
|
|
|
for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
|
|
/* Run command READ_CODE_VERSION */
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.length = 0;
|
|
mb->cmd.command = PPP_READ_CODE_VERSION;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
if (err != CMD_OK)
|
|
ppp_error(card, err, mb);
|
|
}
|
|
}
|
|
else return err;
|
|
|
|
err = ppp_set_intr_mode( card, 0 );
|
|
if (err != CMD_OK)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*==============================================================================
|
|
* Determine what type of UDP call it is. DRVSTATS or PTPIPEAB ?
|
|
*/
|
|
static int udp_pkt_type( struct sk_buff *skb, sdla_t *card )
|
|
{
|
|
unsigned char *sendpacket;
|
|
unsigned char buf2[5];
|
|
ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t *)skb->data;
|
|
|
|
sendpacket = skb->data;
|
|
memcpy(&buf2, &card->wandev.udp_port, 2);
|
|
|
|
if( ppp_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45 && /* IP packet */
|
|
sendpacket[9] == 0x11 && /* UDP packet */
|
|
sendpacket[22] == buf2[1] && /* UDP Port */
|
|
sendpacket[23] == buf2[0] &&
|
|
sendpacket[36] == 0x01 ) {
|
|
|
|
if ( sendpacket[28] == 0x50 && /* PTPIPEAB: Signature */
|
|
sendpacket[29] == 0x54 &&
|
|
sendpacket[30] == 0x50 &&
|
|
sendpacket[31] == 0x49 &&
|
|
sendpacket[32] == 0x50 &&
|
|
sendpacket[33] == 0x45 &&
|
|
sendpacket[34] == 0x41 &&
|
|
sendpacket[35] == 0x42 ){
|
|
|
|
return UDP_PTPIPE_TYPE;
|
|
|
|
} else if(sendpacket[28] == 0x44 && /* DRVSTATS: Signature */
|
|
sendpacket[29] == 0x52 &&
|
|
sendpacket[30] == 0x56 &&
|
|
sendpacket[31] == 0x53 &&
|
|
sendpacket[32] == 0x54 &&
|
|
sendpacket[33] == 0x41 &&
|
|
sendpacket[34] == 0x54 &&
|
|
sendpacket[35] == 0x53 ){
|
|
|
|
return UDP_DRVSTATS_TYPE;
|
|
|
|
} else
|
|
return UDP_INVALID_TYPE;
|
|
|
|
} else
|
|
return UDP_INVALID_TYPE;
|
|
|
|
}
|
|
|
|
/*============================================================================
|
|
* 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, struct net_device* dev,
|
|
struct sk_buff *skb)
|
|
{
|
|
u32 src_ip_addr;
|
|
u32 broadcast_ip_addr = 0;
|
|
struct in_device *in_dev;
|
|
|
|
/* read the IP source address from the outgoing packet */
|
|
src_ip_addr = *(u32 *)(skb->data + 12);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
void s508_lock (sdla_t *card, unsigned long *smp_flags)
|
|
{
|
|
spin_lock_irqsave(&card->wandev.lock, *smp_flags);
|
|
}
|
|
|
|
void s508_unlock (sdla_t *card, unsigned long *smp_flags)
|
|
{
|
|
spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
|
|
}
|
|
|
|
static int read_connection_info (sdla_t *card)
|
|
{
|
|
ppp_mbox_t *mb = card->mbox;
|
|
struct net_device *dev = card->wandev.dev;
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
ppp508_connect_info_t *ppp508_connect_info;
|
|
int err;
|
|
|
|
memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
|
|
mb->cmd.length = 0;
|
|
mb->cmd.command = PPP_GET_CONNECTION_INFO;
|
|
err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
|
|
|
|
if (err != CMD_OK) {
|
|
ppp_error(card, err, mb);
|
|
ppp_priv_area->ip_remote = 0;
|
|
ppp_priv_area->ip_local = 0;
|
|
}
|
|
else {
|
|
ppp508_connect_info = (ppp508_connect_info_t *)mb->data;
|
|
ppp_priv_area->ip_remote = ppp508_connect_info->ip_remote;
|
|
ppp_priv_area->ip_local = ppp508_connect_info->ip_local;
|
|
|
|
NEX_PRINTK(KERN_INFO "READ CONNECTION GOT IP ADDRESS %x, %x\n",
|
|
ppp_priv_area->ip_remote,
|
|
ppp_priv_area->ip_local);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/*===============================================================================
|
|
* config_ppp
|
|
*
|
|
* Configure the ppp protocol and enable communications.
|
|
*
|
|
* The if_open function binds this function to the poll routine.
|
|
* Therefore, this function will run every time the ppp interface
|
|
* is brought up.
|
|
*
|
|
* 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 changed, we have to reconfigure the firmware
|
|
* and update the changed IP addresses. Otherwise, just exit.
|
|
*/
|
|
static int config_ppp (sdla_t *card)
|
|
{
|
|
|
|
struct net_device *dev = card->wandev.dev;
|
|
ppp_flags_t *flags = card->flags;
|
|
ppp_private_area_t *ppp_priv_area = dev->priv;
|
|
|
|
if (card->u.p.comm_enabled){
|
|
|
|
if (ppp_priv_area->ip_local_tmp != ppp_priv_area->ip_local ||
|
|
ppp_priv_area->ip_remote_tmp != ppp_priv_area->ip_remote){
|
|
|
|
/* The IP addersses have changed, we must
|
|
* stop the communications and reconfigure
|
|
* the card. Reason: the firmware must know
|
|
* the local and remote IP addresses. */
|
|
disable_comm(card);
|
|
wanpipe_set_state(card, WAN_DISCONNECTED);
|
|
printk(KERN_INFO
|
|
"%s: IP addresses changed!\n",
|
|
card->devname);
|
|
printk(KERN_INFO "%s: Restarting communications ...\n",
|
|
card->devname);
|
|
}else{
|
|
/* IP addresses are the same and the link is up,
|
|
* we don't have to do anything here. Therefore, exit */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Record the new IP addreses */
|
|
ppp_priv_area->ip_local = ppp_priv_area->ip_local_tmp;
|
|
ppp_priv_area->ip_remote = ppp_priv_area->ip_remote_tmp;
|
|
|
|
if (config508(dev, card)){
|
|
printk(KERN_INFO "%s: Failed to configure PPP device\n",
|
|
card->devname);
|
|
return 0;
|
|
}
|
|
|
|
if (ppp_set_intr_mode(card, PPP_INTR_RXRDY|
|
|
PPP_INTR_TXRDY|
|
|
PPP_INTR_MODEM|
|
|
PPP_INTR_DISC |
|
|
PPP_INTR_OPEN |
|
|
PPP_INTR_DROP_DTR |
|
|
PPP_INTR_TIMER)) {
|
|
|
|
printk(KERN_INFO "%s: Failed to configure board interrupts !\n",
|
|
card->devname);
|
|
return 0;
|
|
}
|
|
|
|
/* Turn off the transmit and timer interrupt */
|
|
flags->imask &= ~(PPP_INTR_TXRDY | PPP_INTR_TIMER) ;
|
|
|
|
|
|
/* If you are not the authenticator and any one of the protocol is
|
|
* enabled then we call the set_out_bound_authentication.
|
|
*/
|
|
if ( !card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)) {
|
|
if ( ppp_set_outbnd_auth(card, ppp_priv_area) ){
|
|
printk(KERN_INFO "%s: Outbound authentication failed !\n",
|
|
card->devname);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* If you are the authenticator and any one of the protocol is enabled
|
|
* then we call the set_in_bound_authentication.
|
|
*/
|
|
if (card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)){
|
|
if (ppp_set_inbnd_auth(card, ppp_priv_area)){
|
|
printk(KERN_INFO "%s: Inbound authentication failed !\n",
|
|
card->devname);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* If we fail to enable communications here it's OK,
|
|
* since the DTR timer will cause a disconnected, which
|
|
* will retrigger communication in timer_intr() */
|
|
if (ppp_comm_enable(card) == CMD_OK) {
|
|
wanpipe_set_state(card, WAN_CONNECTING);
|
|
init_ppp_tx_rx_buff(card);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*============================================================
|
|
* ppp_poll
|
|
*
|
|
* Rationale:
|
|
* We cannot manipulate the routing tables, or
|
|
* ip addresses withing the interrupt. Therefore
|
|
* we must perform such actons outside an interrupt
|
|
* at a later time.
|
|
*
|
|
* Description:
|
|
* PPP polling routine, responsible for
|
|
* shutting down interfaces upon disconnect
|
|
* and adding/removing routes.
|
|
*
|
|
* Usage:
|
|
* This function is executed for each ppp
|
|
* interface through a tq_schedule bottom half.
|
|
*
|
|
* trigger_ppp_poll() function is used to kick
|
|
* the ppp_poll routine.
|
|
*/
|
|
static void ppp_poll(struct net_device *dev)
|
|
{
|
|
ppp_private_area_t *ppp_priv_area;
|
|
sdla_t *card;
|
|
u8 check_gateway=0;
|
|
ppp_flags_t *flags;
|
|
|
|
if (!dev || (ppp_priv_area = dev->priv) == NULL)
|
|
return;
|
|
|
|
card = ppp_priv_area->card;
|
|
flags = card->flags;
|
|
|
|
/* Shutdown is in progress, stop what you are
|
|
* doing and get out */
|
|
if (test_bit(PERI_CRIT,&card->wandev.critical)){
|
|
clear_bit(POLL_CRIT,&card->wandev.critical);
|
|
return;
|
|
}
|
|
|
|
/* if_open() function has triggered the polling routine
|
|
* to determine the configured IP addresses. Once the
|
|
* addresses are found, trigger the chdlc configuration */
|
|
if (test_bit(0,&ppp_priv_area->config_ppp)){
|
|
|
|
ppp_priv_area->ip_local_tmp = get_ip_address(dev,WAN_LOCAL_IP);
|
|
ppp_priv_area->ip_remote_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
|
|
|
|
if (ppp_priv_area->ip_local_tmp == ppp_priv_area->ip_remote_tmp &&
|
|
card->u.p.ip_mode == WANOPT_PPP_HOST){
|
|
|
|
if (++ppp_priv_area->ip_error > MAX_IP_ERRORS){
|
|
printk(KERN_INFO "\n%s: --- WARNING ---\n",
|
|
card->devname);
|
|
printk(KERN_INFO "%s: The local IP address is the same as the\n",
|
|
card->devname);
|
|
printk(KERN_INFO "%s: Point-to-Point IP address.\n",
|
|
card->devname);
|
|
printk(KERN_INFO "%s: --- WARNING ---\n\n",
|
|
card->devname);
|
|
}else{
|
|
clear_bit(POLL_CRIT,&card->wandev.critical);
|
|
ppp_priv_area->poll_delay_timer.expires = jiffies+HZ;
|
|
add_timer(&ppp_priv_area->poll_delay_timer);
|
|
return;
|
|
}
|
|
}
|
|
|
|
ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
|
|
flags->imask |= PPP_INTR_TIMER;
|
|
ppp_priv_area->ip_error=0;
|
|
|
|
clear_bit(0,&ppp_priv_area->config_ppp);
|
|
clear_bit(POLL_CRIT,&card->wandev.critical);
|
|
return;
|
|
}
|
|
|
|
/* Dynamic interface implementation, as well as dynamic
|
|
* routing. */
|
|
|
|
switch (card->wandev.state) {
|
|
|
|
case WAN_DISCONNECTED:
|
|
|
|
/* If the dynamic interface configuration is on, and interface
|
|
* is up, then bring down the netowrk interface */
|
|
|
|
if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) &&
|
|
!test_bit(DEV_DOWN,&ppp_priv_area->interface_down) &&
|
|
card->wandev.dev->flags & IFF_UP){
|
|
|
|
printk(KERN_INFO "%s: Interface %s down.\n",
|
|
card->devname,card->wandev.dev->name);
|
|
change_dev_flags(card->wandev.dev,
|
|
(card->wandev.dev->flags&~IFF_UP));
|
|
set_bit(DEV_DOWN,&ppp_priv_area->interface_down);
|
|
}else{
|
|
/* We need to check if the local IP address is
|
|
* zero. If it is, we shouldn't try to remove it.
|
|
* For some reason the kernel crashes badly if
|
|
* we try to remove the route twice */
|
|
|
|
if (card->wandev.dev->flags & IFF_UP &&
|
|
get_ip_address(card->wandev.dev,WAN_LOCAL_IP) &&
|
|
card->u.p.ip_mode == WANOPT_PPP_PEER){
|
|
|
|
remove_route(card);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case WAN_CONNECTED:
|
|
|
|
/* In SMP machine this code can execute before the interface
|
|
* comes up. In this case, we must make sure that we do not
|
|
* try to bring up the interface before dev_open() is finished */
|
|
|
|
|
|
/* DEV_DOWN will be set only when we bring down the interface
|
|
* for the very first time. This way we know that it was us
|
|
* that brought the interface down */
|
|
|
|
if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) &&
|
|
test_bit(DEV_DOWN, &ppp_priv_area->interface_down) &&
|
|
!(card->wandev.dev->flags & IFF_UP)){
|
|
|
|
printk(KERN_INFO "%s: Interface %s up.\n",
|
|
card->devname,card->wandev.dev->name);
|
|
|
|
change_dev_flags(card->wandev.dev,(card->wandev.dev->flags|IFF_UP));
|
|
clear_bit(DEV_DOWN,&ppp_priv_area->interface_down);
|
|
check_gateway=1;
|
|
}
|
|
|
|
if ((card->u.p.ip_mode == WANOPT_PPP_PEER) &&
|
|
test_bit(1,&Read_connection_info)) {
|
|
|
|
process_route(card);
|
|
clear_bit(1,&Read_connection_info);
|
|
check_gateway=1;
|
|
}
|
|
|
|
if (ppp_priv_area->gateway && check_gateway)
|
|
add_gateway(card,dev);
|
|
|
|
break;
|
|
}
|
|
clear_bit(POLL_CRIT,&card->wandev.critical);
|
|
return;
|
|
}
|
|
|
|
/*============================================================
|
|
* trigger_ppp_poll
|
|
*
|
|
* Description:
|
|
* Add a ppp_poll() task into a tq_scheduler bh handler
|
|
* for a specific interface. This will kick
|
|
* the ppp_poll() routine at a later time.
|
|
*
|
|
* Usage:
|
|
* Interrupts use this to defer a taks to
|
|
* a polling routine.
|
|
*
|
|
*/
|
|
|
|
static void trigger_ppp_poll(struct net_device *dev)
|
|
{
|
|
ppp_private_area_t *ppp_priv_area;
|
|
if ((ppp_priv_area=dev->priv) != NULL){
|
|
|
|
sdla_t *card = ppp_priv_area->card;
|
|
|
|
if (test_bit(PERI_CRIT,&card->wandev.critical)){
|
|
return;
|
|
}
|
|
|
|
if (test_and_set_bit(POLL_CRIT,&card->wandev.critical)){
|
|
return;
|
|
}
|
|
|
|
schedule_work(&ppp_priv_area->poll_work);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void ppp_poll_delay (unsigned long dev_ptr)
|
|
{
|
|
struct net_device *dev = (struct net_device *)dev_ptr;
|
|
trigger_ppp_poll(dev);
|
|
}
|
|
|
|
/*============================================================
|
|
* detect_and_fix_tx_bug
|
|
*
|
|
* Description:
|
|
* On connect, if the board tx buffer ptr is not the same
|
|
* as the driver tx buffer ptr, we found a firmware bug.
|
|
* Report the bug to the above layer. To fix the
|
|
* error restart communications again.
|
|
*
|
|
* Usage:
|
|
*
|
|
*/
|
|
|
|
static int detect_and_fix_tx_bug (sdla_t *card)
|
|
{
|
|
if (((unsigned long)card->u.p.txbuf_base&0xFFF) != ((*card->u.p.txbuf_next)&0xFFF)){
|
|
NEX_PRINTK(KERN_INFO "Major Error, Fix the bug\n");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/****** End *****************************************************************/
|
|
|