mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
![Kees Cook](/assets/img/avatar_default.png)
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2520 lines
70 KiB
C
2520 lines
70 KiB
C
/*
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* Kernel CAPI interface for the Gigaset driver
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*
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* Copyright (c) 2009 by Tilman Schmidt <tilman@imap.cc>.
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*
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* =====================================================================
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*/
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#include "gigaset.h"
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/ratelimit.h>
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#include <linux/isdn/capilli.h>
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#include <linux/isdn/capicmd.h>
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#include <linux/isdn/capiutil.h>
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#include <linux/export.h>
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/* missing from kernelcapi.h */
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#define CapiNcpiNotSupportedByProtocol 0x0001
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#define CapiFlagsNotSupportedByProtocol 0x0002
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#define CapiAlertAlreadySent 0x0003
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#define CapiFacilitySpecificFunctionNotSupported 0x3011
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/* missing from capicmd.h */
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#define CAPI_CONNECT_IND_BASELEN (CAPI_MSG_BASELEN + 4 + 2 + 8 * 1)
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#define CAPI_CONNECT_ACTIVE_IND_BASELEN (CAPI_MSG_BASELEN + 4 + 3 * 1)
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#define CAPI_CONNECT_B3_IND_BASELEN (CAPI_MSG_BASELEN + 4 + 1)
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#define CAPI_CONNECT_B3_ACTIVE_IND_BASELEN (CAPI_MSG_BASELEN + 4 + 1)
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#define CAPI_DATA_B3_REQ_LEN64 (CAPI_MSG_BASELEN + 4 + 4 + 2 + 2 + 2 + 8)
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#define CAPI_DATA_B3_CONF_LEN (CAPI_MSG_BASELEN + 4 + 2 + 2)
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#define CAPI_DISCONNECT_IND_LEN (CAPI_MSG_BASELEN + 4 + 2)
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#define CAPI_DISCONNECT_B3_IND_BASELEN (CAPI_MSG_BASELEN + 4 + 2 + 1)
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#define CAPI_FACILITY_CONF_BASELEN (CAPI_MSG_BASELEN + 4 + 2 + 2 + 1)
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/* most _CONF messages contain only Controller/PLCI/NCCI and Info parameters */
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#define CAPI_STDCONF_LEN (CAPI_MSG_BASELEN + 4 + 2)
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#define CAPI_FACILITY_HANDSET 0x0000
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#define CAPI_FACILITY_DTMF 0x0001
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#define CAPI_FACILITY_V42BIS 0x0002
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#define CAPI_FACILITY_SUPPSVC 0x0003
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#define CAPI_FACILITY_WAKEUP 0x0004
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#define CAPI_FACILITY_LI 0x0005
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#define CAPI_SUPPSVC_GETSUPPORTED 0x0000
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#define CAPI_SUPPSVC_LISTEN 0x0001
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/* missing from capiutil.h */
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#define CAPIMSG_PLCI_PART(m) CAPIMSG_U8(m, 9)
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#define CAPIMSG_NCCI_PART(m) CAPIMSG_U16(m, 10)
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#define CAPIMSG_HANDLE_REQ(m) CAPIMSG_U16(m, 18) /* DATA_B3_REQ/_IND only! */
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#define CAPIMSG_FLAGS(m) CAPIMSG_U16(m, 20)
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#define CAPIMSG_SETCONTROLLER(m, contr) capimsg_setu8(m, 8, contr)
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#define CAPIMSG_SETPLCI_PART(m, plci) capimsg_setu8(m, 9, plci)
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#define CAPIMSG_SETNCCI_PART(m, ncci) capimsg_setu16(m, 10, ncci)
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#define CAPIMSG_SETFLAGS(m, flags) capimsg_setu16(m, 20, flags)
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/* parameters with differing location in DATA_B3_CONF/_RESP: */
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#define CAPIMSG_SETHANDLE_CONF(m, handle) capimsg_setu16(m, 12, handle)
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#define CAPIMSG_SETINFO_CONF(m, info) capimsg_setu16(m, 14, info)
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/* Flags (DATA_B3_REQ/_IND) */
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#define CAPI_FLAGS_DELIVERY_CONFIRMATION 0x04
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#define CAPI_FLAGS_RESERVED (~0x1f)
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/* buffer sizes */
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#define MAX_BC_OCTETS 11
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#define MAX_HLC_OCTETS 3
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#define MAX_NUMBER_DIGITS 20
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#define MAX_FMT_IE_LEN 20
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/* values for bcs->apconnstate */
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#define APCONN_NONE 0 /* inactive/listening */
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#define APCONN_SETUP 1 /* connecting */
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#define APCONN_ACTIVE 2 /* B channel up */
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/* registered application data structure */
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struct gigaset_capi_appl {
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struct list_head ctrlist;
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struct gigaset_capi_appl *bcnext;
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u16 id;
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struct capi_register_params rp;
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u16 nextMessageNumber;
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u32 listenInfoMask;
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u32 listenCIPmask;
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};
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/* CAPI specific controller data structure */
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struct gigaset_capi_ctr {
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struct capi_ctr ctr;
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struct list_head appls;
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struct sk_buff_head sendqueue;
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atomic_t sendqlen;
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/* two _cmsg structures possibly used concurrently: */
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_cmsg hcmsg; /* for message composition triggered from hardware */
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_cmsg acmsg; /* for dissection of messages sent from application */
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u8 bc_buf[MAX_BC_OCTETS + 1];
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u8 hlc_buf[MAX_HLC_OCTETS + 1];
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u8 cgpty_buf[MAX_NUMBER_DIGITS + 3];
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u8 cdpty_buf[MAX_NUMBER_DIGITS + 2];
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};
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/* CIP Value table (from CAPI 2.0 standard, ch. 6.1) */
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static struct {
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u8 *bc;
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u8 *hlc;
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} cip2bchlc[] = {
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[1] = { "8090A3", NULL }, /* Speech (A-law) */
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[2] = { "8890", NULL }, /* Unrestricted digital information */
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[3] = { "8990", NULL }, /* Restricted digital information */
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[4] = { "9090A3", NULL }, /* 3,1 kHz audio (A-law) */
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[5] = { "9190", NULL }, /* 7 kHz audio */
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[6] = { "9890", NULL }, /* Video */
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[7] = { "88C0C6E6", NULL }, /* Packet mode */
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[8] = { "8890218F", NULL }, /* 56 kbit/s rate adaptation */
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[9] = { "9190A5", NULL }, /* Unrestricted digital information
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* with tones/announcements */
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[16] = { "8090A3", "9181" }, /* Telephony */
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[17] = { "9090A3", "9184" }, /* Group 2/3 facsimile */
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[18] = { "8890", "91A1" }, /* Group 4 facsimile Class 1 */
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[19] = { "8890", "91A4" }, /* Teletex service basic and mixed mode
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* and Group 4 facsimile service
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* Classes II and III */
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[20] = { "8890", "91A8" }, /* Teletex service basic and
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* processable mode */
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[21] = { "8890", "91B1" }, /* Teletex service basic mode */
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[22] = { "8890", "91B2" }, /* International interworking for
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* Videotex */
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[23] = { "8890", "91B5" }, /* Telex */
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[24] = { "8890", "91B8" }, /* Message Handling Systems
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* in accordance with X.400 */
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[25] = { "8890", "91C1" }, /* OSI application
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* in accordance with X.200 */
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[26] = { "9190A5", "9181" }, /* 7 kHz telephony */
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[27] = { "9190A5", "916001" }, /* Video telephony, first connection */
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[28] = { "8890", "916002" }, /* Video telephony, second connection */
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};
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/*
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* helper functions
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* ================
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*/
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/*
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* emit unsupported parameter warning
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*/
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static inline void ignore_cstruct_param(struct cardstate *cs, _cstruct param,
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char *msgname, char *paramname)
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{
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if (param && *param)
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dev_warn(cs->dev, "%s: ignoring unsupported parameter: %s\n",
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msgname, paramname);
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}
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/*
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* convert an IE from Gigaset hex string to ETSI binary representation
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* including length byte
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* return value: result length, -1 on error
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*/
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static int encode_ie(char *in, u8 *out, int maxlen)
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{
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int l = 0;
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while (*in) {
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if (!isxdigit(in[0]) || !isxdigit(in[1]) || l >= maxlen)
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return -1;
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out[++l] = (hex_to_bin(in[0]) << 4) + hex_to_bin(in[1]);
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in += 2;
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}
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out[0] = l;
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return l;
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}
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/*
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* convert an IE from ETSI binary representation including length byte
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* to Gigaset hex string
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*/
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static void decode_ie(u8 *in, char *out)
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{
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int i = *in;
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while (i-- > 0) {
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/* ToDo: conversion to upper case necessary? */
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*out++ = toupper(hex_asc_hi(*++in));
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*out++ = toupper(hex_asc_lo(*in));
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}
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}
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/*
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* retrieve application data structure for an application ID
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*/
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static inline struct gigaset_capi_appl *
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get_appl(struct gigaset_capi_ctr *iif, u16 appl)
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{
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struct gigaset_capi_appl *ap;
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list_for_each_entry(ap, &iif->appls, ctrlist)
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if (ap->id == appl)
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return ap;
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return NULL;
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}
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/*
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* dump CAPI message to kernel messages for debugging
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*/
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static inline void dump_cmsg(enum debuglevel level, const char *tag, _cmsg *p)
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{
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#ifdef CONFIG_GIGASET_DEBUG
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/* dump at most 20 messages in 20 secs */
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static DEFINE_RATELIMIT_STATE(msg_dump_ratelimit, 20 * HZ, 20);
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_cdebbuf *cdb;
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if (!(gigaset_debuglevel & level))
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return;
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if (!___ratelimit(&msg_dump_ratelimit, tag))
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return;
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cdb = capi_cmsg2str(p);
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if (cdb) {
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gig_dbg(level, "%s: [%d] %s", tag, p->ApplId, cdb->buf);
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cdebbuf_free(cdb);
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} else {
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gig_dbg(level, "%s: [%d] %s", tag, p->ApplId,
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capi_cmd2str(p->Command, p->Subcommand));
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}
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#endif
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}
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static inline void dump_rawmsg(enum debuglevel level, const char *tag,
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unsigned char *data)
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{
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#ifdef CONFIG_GIGASET_DEBUG
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char *dbgline;
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int i, l;
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if (!(gigaset_debuglevel & level))
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return;
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l = CAPIMSG_LEN(data);
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if (l < 12) {
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gig_dbg(level, "%s: ??? LEN=%04d", tag, l);
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return;
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}
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gig_dbg(level, "%s: 0x%02x:0x%02x: ID=%03d #0x%04x LEN=%04d NCCI=0x%x",
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tag, CAPIMSG_COMMAND(data), CAPIMSG_SUBCOMMAND(data),
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CAPIMSG_APPID(data), CAPIMSG_MSGID(data), l,
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CAPIMSG_CONTROL(data));
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l -= 12;
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if (l <= 0)
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return;
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if (l > 64)
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l = 64; /* arbitrary limit */
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dbgline = kmalloc_array(3, l, GFP_ATOMIC);
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if (!dbgline)
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return;
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for (i = 0; i < l; i++) {
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dbgline[3 * i] = hex_asc_hi(data[12 + i]);
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dbgline[3 * i + 1] = hex_asc_lo(data[12 + i]);
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dbgline[3 * i + 2] = ' ';
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}
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dbgline[3 * l - 1] = '\0';
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gig_dbg(level, " %s", dbgline);
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kfree(dbgline);
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if (CAPIMSG_COMMAND(data) == CAPI_DATA_B3 &&
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(CAPIMSG_SUBCOMMAND(data) == CAPI_REQ ||
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CAPIMSG_SUBCOMMAND(data) == CAPI_IND)) {
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l = CAPIMSG_DATALEN(data);
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gig_dbg(level, " DataLength=%d", l);
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if (l <= 0 || !(gigaset_debuglevel & DEBUG_LLDATA))
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return;
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if (l > 64)
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l = 64; /* arbitrary limit */
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dbgline = kmalloc_array(3, l, GFP_ATOMIC);
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if (!dbgline)
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return;
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data += CAPIMSG_LEN(data);
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for (i = 0; i < l; i++) {
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dbgline[3 * i] = hex_asc_hi(data[i]);
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dbgline[3 * i + 1] = hex_asc_lo(data[i]);
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dbgline[3 * i + 2] = ' ';
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}
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dbgline[3 * l - 1] = '\0';
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gig_dbg(level, " %s", dbgline);
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kfree(dbgline);
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}
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#endif
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}
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/*
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* format CAPI IE as string
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*/
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#ifdef CONFIG_GIGASET_DEBUG
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static const char *format_ie(const char *ie)
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{
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static char result[3 * MAX_FMT_IE_LEN];
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int len, count;
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char *pout = result;
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if (!ie)
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return "NULL";
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count = len = ie[0];
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if (count > MAX_FMT_IE_LEN)
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count = MAX_FMT_IE_LEN - 1;
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while (count--) {
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*pout++ = hex_asc_hi(*++ie);
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*pout++ = hex_asc_lo(*ie);
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*pout++ = ' ';
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}
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if (len > MAX_FMT_IE_LEN) {
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*pout++ = '.';
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*pout++ = '.';
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*pout++ = '.';
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}
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*--pout = 0;
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return result;
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}
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#endif
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/*
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* emit DATA_B3_CONF message
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*/
|
|
static void send_data_b3_conf(struct cardstate *cs, struct capi_ctr *ctr,
|
|
u16 appl, u16 msgid, int channel,
|
|
u16 handle, u16 info)
|
|
{
|
|
struct sk_buff *cskb;
|
|
u8 *msg;
|
|
|
|
cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC);
|
|
if (!cskb) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
/* frequent message, avoid _cmsg overhead */
|
|
msg = __skb_put(cskb, CAPI_DATA_B3_CONF_LEN);
|
|
CAPIMSG_SETLEN(msg, CAPI_DATA_B3_CONF_LEN);
|
|
CAPIMSG_SETAPPID(msg, appl);
|
|
CAPIMSG_SETCOMMAND(msg, CAPI_DATA_B3);
|
|
CAPIMSG_SETSUBCOMMAND(msg, CAPI_CONF);
|
|
CAPIMSG_SETMSGID(msg, msgid);
|
|
CAPIMSG_SETCONTROLLER(msg, ctr->cnr);
|
|
CAPIMSG_SETPLCI_PART(msg, channel);
|
|
CAPIMSG_SETNCCI_PART(msg, 1);
|
|
CAPIMSG_SETHANDLE_CONF(msg, handle);
|
|
CAPIMSG_SETINFO_CONF(msg, info);
|
|
|
|
/* emit message */
|
|
dump_rawmsg(DEBUG_MCMD, __func__, msg);
|
|
capi_ctr_handle_message(ctr, appl, cskb);
|
|
}
|
|
|
|
|
|
/*
|
|
* driver interface functions
|
|
* ==========================
|
|
*/
|
|
|
|
/**
|
|
* gigaset_skb_sent() - acknowledge transmission of outgoing skb
|
|
* @bcs: B channel descriptor structure.
|
|
* @skb: sent data.
|
|
*
|
|
* Called by hardware module {bas,ser,usb}_gigaset when the data in a
|
|
* skb has been successfully sent, for signalling completion to the LL.
|
|
*/
|
|
void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct gigaset_capi_appl *ap = bcs->ap;
|
|
unsigned char *req = skb_mac_header(dskb);
|
|
u16 flags;
|
|
|
|
/* update statistics */
|
|
++bcs->trans_up;
|
|
|
|
if (!ap) {
|
|
gig_dbg(DEBUG_MCMD, "%s: application gone", __func__);
|
|
return;
|
|
}
|
|
|
|
/* don't send further B3 messages if disconnected */
|
|
if (bcs->apconnstate < APCONN_ACTIVE) {
|
|
gig_dbg(DEBUG_MCMD, "%s: disconnected", __func__);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* send DATA_B3_CONF if "delivery confirmation" bit was set in request;
|
|
* otherwise it has already been sent by do_data_b3_req()
|
|
*/
|
|
flags = CAPIMSG_FLAGS(req);
|
|
if (flags & CAPI_FLAGS_DELIVERY_CONFIRMATION)
|
|
send_data_b3_conf(cs, &iif->ctr, ap->id, CAPIMSG_MSGID(req),
|
|
bcs->channel + 1, CAPIMSG_HANDLE_REQ(req),
|
|
(flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION) ?
|
|
CapiFlagsNotSupportedByProtocol :
|
|
CAPI_NOERROR);
|
|
}
|
|
EXPORT_SYMBOL_GPL(gigaset_skb_sent);
|
|
|
|
/**
|
|
* gigaset_skb_rcvd() - pass received skb to LL
|
|
* @bcs: B channel descriptor structure.
|
|
* @skb: received data.
|
|
*
|
|
* Called by hardware module {bas,ser,usb}_gigaset when user data has
|
|
* been successfully received, for passing to the LL.
|
|
* Warning: skb must not be accessed anymore!
|
|
*/
|
|
void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct gigaset_capi_appl *ap = bcs->ap;
|
|
int len = skb->len;
|
|
|
|
/* update statistics */
|
|
bcs->trans_down++;
|
|
|
|
if (!ap) {
|
|
gig_dbg(DEBUG_MCMD, "%s: application gone", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
|
|
/* don't send further B3 messages if disconnected */
|
|
if (bcs->apconnstate < APCONN_ACTIVE) {
|
|
gig_dbg(DEBUG_MCMD, "%s: disconnected", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* prepend DATA_B3_IND message to payload
|
|
* Parameters: NCCI = 1, all others 0/unused
|
|
* frequent message, avoid _cmsg overhead
|
|
*/
|
|
skb_push(skb, CAPI_DATA_B3_REQ_LEN);
|
|
CAPIMSG_SETLEN(skb->data, CAPI_DATA_B3_REQ_LEN);
|
|
CAPIMSG_SETAPPID(skb->data, ap->id);
|
|
CAPIMSG_SETCOMMAND(skb->data, CAPI_DATA_B3);
|
|
CAPIMSG_SETSUBCOMMAND(skb->data, CAPI_IND);
|
|
CAPIMSG_SETMSGID(skb->data, ap->nextMessageNumber++);
|
|
CAPIMSG_SETCONTROLLER(skb->data, iif->ctr.cnr);
|
|
CAPIMSG_SETPLCI_PART(skb->data, bcs->channel + 1);
|
|
CAPIMSG_SETNCCI_PART(skb->data, 1);
|
|
/* Data parameter not used */
|
|
CAPIMSG_SETDATALEN(skb->data, len);
|
|
/* Data handle parameter not used */
|
|
CAPIMSG_SETFLAGS(skb->data, 0);
|
|
/* Data64 parameter not present */
|
|
|
|
/* emit message */
|
|
dump_rawmsg(DEBUG_MCMD, __func__, skb->data);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
EXPORT_SYMBOL_GPL(gigaset_skb_rcvd);
|
|
|
|
/**
|
|
* gigaset_isdn_rcv_err() - signal receive error
|
|
* @bcs: B channel descriptor structure.
|
|
*
|
|
* Called by hardware module {bas,ser,usb}_gigaset when a receive error
|
|
* has occurred, for signalling to the LL.
|
|
*/
|
|
void gigaset_isdn_rcv_err(struct bc_state *bcs)
|
|
{
|
|
/* if currently ignoring packets, just count down */
|
|
if (bcs->ignore) {
|
|
bcs->ignore--;
|
|
return;
|
|
}
|
|
|
|
/* update statistics */
|
|
bcs->corrupted++;
|
|
|
|
/* ToDo: signal error -> LL */
|
|
}
|
|
EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err);
|
|
|
|
/**
|
|
* gigaset_isdn_icall() - signal incoming call
|
|
* @at_state: connection state structure.
|
|
*
|
|
* Called by main module at tasklet level to notify the LL that an incoming
|
|
* call has been received. @at_state contains the parameters of the call.
|
|
*
|
|
* Return value: call disposition (ICALL_*)
|
|
*/
|
|
int gigaset_isdn_icall(struct at_state_t *at_state)
|
|
{
|
|
struct cardstate *cs = at_state->cs;
|
|
struct bc_state *bcs = at_state->bcs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct gigaset_capi_appl *ap;
|
|
u32 actCIPmask;
|
|
struct sk_buff *skb;
|
|
unsigned int msgsize;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
/*
|
|
* ToDo: signal calls without a free B channel, too
|
|
* (requires a u8 handle for the at_state structure that can
|
|
* be stored in the PLCI and used in the CONNECT_RESP message
|
|
* handler to retrieve it)
|
|
*/
|
|
if (!bcs)
|
|
return ICALL_IGNORE;
|
|
|
|
/* prepare CONNECT_IND message, using B channel number as PLCI */
|
|
capi_cmsg_header(&iif->hcmsg, 0, CAPI_CONNECT, CAPI_IND, 0,
|
|
iif->ctr.cnr | ((bcs->channel + 1) << 8));
|
|
|
|
/* minimum size, all structs empty */
|
|
msgsize = CAPI_CONNECT_IND_BASELEN;
|
|
|
|
/* Bearer Capability (mandatory) */
|
|
if (at_state->str_var[STR_ZBC]) {
|
|
/* pass on BC from Gigaset */
|
|
if (encode_ie(at_state->str_var[STR_ZBC], iif->bc_buf,
|
|
MAX_BC_OCTETS) < 0) {
|
|
dev_warn(cs->dev, "RING ignored - bad BC %s\n",
|
|
at_state->str_var[STR_ZBC]);
|
|
return ICALL_IGNORE;
|
|
}
|
|
|
|
/* look up corresponding CIP value */
|
|
iif->hcmsg.CIPValue = 0; /* default if nothing found */
|
|
for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++)
|
|
if (cip2bchlc[i].bc != NULL &&
|
|
cip2bchlc[i].hlc == NULL &&
|
|
!strcmp(cip2bchlc[i].bc,
|
|
at_state->str_var[STR_ZBC])) {
|
|
iif->hcmsg.CIPValue = i;
|
|
break;
|
|
}
|
|
} else {
|
|
/* no BC (internal call): assume CIP 1 (speech, A-law) */
|
|
iif->hcmsg.CIPValue = 1;
|
|
encode_ie(cip2bchlc[1].bc, iif->bc_buf, MAX_BC_OCTETS);
|
|
}
|
|
iif->hcmsg.BC = iif->bc_buf;
|
|
msgsize += iif->hcmsg.BC[0];
|
|
|
|
/* High Layer Compatibility (optional) */
|
|
if (at_state->str_var[STR_ZHLC]) {
|
|
/* pass on HLC from Gigaset */
|
|
if (encode_ie(at_state->str_var[STR_ZHLC], iif->hlc_buf,
|
|
MAX_HLC_OCTETS) < 0) {
|
|
dev_warn(cs->dev, "RING ignored - bad HLC %s\n",
|
|
at_state->str_var[STR_ZHLC]);
|
|
return ICALL_IGNORE;
|
|
}
|
|
iif->hcmsg.HLC = iif->hlc_buf;
|
|
msgsize += iif->hcmsg.HLC[0];
|
|
|
|
/* look up corresponding CIP value */
|
|
/* keep BC based CIP value if none found */
|
|
if (at_state->str_var[STR_ZBC])
|
|
for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++)
|
|
if (cip2bchlc[i].hlc != NULL &&
|
|
!strcmp(cip2bchlc[i].hlc,
|
|
at_state->str_var[STR_ZHLC]) &&
|
|
!strcmp(cip2bchlc[i].bc,
|
|
at_state->str_var[STR_ZBC])) {
|
|
iif->hcmsg.CIPValue = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Called Party Number (optional) */
|
|
if (at_state->str_var[STR_ZCPN]) {
|
|
i = strlen(at_state->str_var[STR_ZCPN]);
|
|
if (i > MAX_NUMBER_DIGITS) {
|
|
dev_warn(cs->dev, "RING ignored - bad number %s\n",
|
|
at_state->str_var[STR_ZBC]);
|
|
return ICALL_IGNORE;
|
|
}
|
|
iif->cdpty_buf[0] = i + 1;
|
|
iif->cdpty_buf[1] = 0x80; /* type / numbering plan unknown */
|
|
memcpy(iif->cdpty_buf + 2, at_state->str_var[STR_ZCPN], i);
|
|
iif->hcmsg.CalledPartyNumber = iif->cdpty_buf;
|
|
msgsize += iif->hcmsg.CalledPartyNumber[0];
|
|
}
|
|
|
|
/* Calling Party Number (optional) */
|
|
if (at_state->str_var[STR_NMBR]) {
|
|
i = strlen(at_state->str_var[STR_NMBR]);
|
|
if (i > MAX_NUMBER_DIGITS) {
|
|
dev_warn(cs->dev, "RING ignored - bad number %s\n",
|
|
at_state->str_var[STR_ZBC]);
|
|
return ICALL_IGNORE;
|
|
}
|
|
iif->cgpty_buf[0] = i + 2;
|
|
iif->cgpty_buf[1] = 0x00; /* type / numbering plan unknown */
|
|
iif->cgpty_buf[2] = 0x80; /* pres. allowed, not screened */
|
|
memcpy(iif->cgpty_buf + 3, at_state->str_var[STR_NMBR], i);
|
|
iif->hcmsg.CallingPartyNumber = iif->cgpty_buf;
|
|
msgsize += iif->hcmsg.CallingPartyNumber[0];
|
|
}
|
|
|
|
/* remaining parameters (not supported, always left NULL):
|
|
* - CalledPartySubaddress
|
|
* - CallingPartySubaddress
|
|
* - AdditionalInfo
|
|
* - BChannelinformation
|
|
* - Keypadfacility
|
|
* - Useruserdata
|
|
* - Facilitydataarray
|
|
*/
|
|
|
|
gig_dbg(DEBUG_CMD, "icall: PLCI %x CIP %d BC %s",
|
|
iif->hcmsg.adr.adrPLCI, iif->hcmsg.CIPValue,
|
|
format_ie(iif->hcmsg.BC));
|
|
gig_dbg(DEBUG_CMD, "icall: HLC %s",
|
|
format_ie(iif->hcmsg.HLC));
|
|
gig_dbg(DEBUG_CMD, "icall: CgPty %s",
|
|
format_ie(iif->hcmsg.CallingPartyNumber));
|
|
gig_dbg(DEBUG_CMD, "icall: CdPty %s",
|
|
format_ie(iif->hcmsg.CalledPartyNumber));
|
|
|
|
/* scan application list for matching listeners */
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
if (bcs->ap != NULL || bcs->apconnstate != APCONN_NONE) {
|
|
dev_warn(cs->dev, "%s: channel not properly cleared (%p/%d)\n",
|
|
__func__, bcs->ap, bcs->apconnstate);
|
|
bcs->ap = NULL;
|
|
bcs->apconnstate = APCONN_NONE;
|
|
}
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
actCIPmask = 1 | (1 << iif->hcmsg.CIPValue);
|
|
list_for_each_entry(ap, &iif->appls, ctrlist)
|
|
if (actCIPmask & ap->listenCIPmask) {
|
|
/* build CONNECT_IND message for this application */
|
|
iif->hcmsg.ApplId = ap->id;
|
|
iif->hcmsg.Messagenumber = ap->nextMessageNumber++;
|
|
|
|
skb = alloc_skb(msgsize, GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_err(cs->dev, "%s: out of memory\n",
|
|
__func__);
|
|
break;
|
|
}
|
|
if (capi_cmsg2message(&iif->hcmsg,
|
|
__skb_put(skb, msgsize))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n",
|
|
__func__);
|
|
dev_kfree_skb_any(skb);
|
|
break;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
|
|
|
|
/* add to listeners on this B channel, update state */
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
ap->bcnext = bcs->ap;
|
|
bcs->ap = ap;
|
|
bcs->chstate |= CHS_NOTIFY_LL;
|
|
bcs->apconnstate = APCONN_SETUP;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
|
|
/* emit message */
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/*
|
|
* Return "accept" if any listeners.
|
|
* Gigaset will send ALERTING.
|
|
* There doesn't seem to be a way to avoid this.
|
|
*/
|
|
return bcs->ap ? ICALL_ACCEPT : ICALL_IGNORE;
|
|
}
|
|
|
|
/*
|
|
* send a DISCONNECT_IND message to an application
|
|
* does not sleep, clobbers the controller's hcmsg structure
|
|
*/
|
|
static void send_disconnect_ind(struct bc_state *bcs,
|
|
struct gigaset_capi_appl *ap, u16 reason)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct sk_buff *skb;
|
|
|
|
if (bcs->apconnstate == APCONN_NONE)
|
|
return;
|
|
|
|
capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT, CAPI_IND,
|
|
ap->nextMessageNumber++,
|
|
iif->ctr.cnr | ((bcs->channel + 1) << 8));
|
|
iif->hcmsg.Reason = reason;
|
|
skb = alloc_skb(CAPI_DISCONNECT_IND_LEN, GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
if (capi_cmsg2message(&iif->hcmsg,
|
|
__skb_put(skb, CAPI_DISCONNECT_IND_LEN))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/*
|
|
* send a DISCONNECT_B3_IND message to an application
|
|
* Parameters: NCCI = 1, NCPI empty, Reason_B3 = 0
|
|
* does not sleep, clobbers the controller's hcmsg structure
|
|
*/
|
|
static void send_disconnect_b3_ind(struct bc_state *bcs,
|
|
struct gigaset_capi_appl *ap)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct sk_buff *skb;
|
|
|
|
/* nothing to do if no logical connection active */
|
|
if (bcs->apconnstate < APCONN_ACTIVE)
|
|
return;
|
|
bcs->apconnstate = APCONN_SETUP;
|
|
|
|
capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
|
|
ap->nextMessageNumber++,
|
|
iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16));
|
|
skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
if (capi_cmsg2message(&iif->hcmsg,
|
|
__skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/**
|
|
* gigaset_isdn_connD() - signal D channel connect
|
|
* @bcs: B channel descriptor structure.
|
|
*
|
|
* Called by main module at tasklet level to notify the LL that the D channel
|
|
* connection has been established.
|
|
*/
|
|
void gigaset_isdn_connD(struct bc_state *bcs)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct gigaset_capi_appl *ap;
|
|
struct sk_buff *skb;
|
|
unsigned int msgsize;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
ap = bcs->ap;
|
|
if (!ap) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
gig_dbg(DEBUG_CMD, "%s: application gone", __func__);
|
|
return;
|
|
}
|
|
if (bcs->apconnstate == APCONN_NONE) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
dev_warn(cs->dev, "%s: application %u not connected\n",
|
|
__func__, ap->id);
|
|
return;
|
|
}
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
while (ap->bcnext) {
|
|
/* this should never happen */
|
|
dev_warn(cs->dev, "%s: dropping extra application %u\n",
|
|
__func__, ap->bcnext->id);
|
|
send_disconnect_ind(bcs, ap->bcnext,
|
|
CapiCallGivenToOtherApplication);
|
|
ap->bcnext = ap->bcnext->bcnext;
|
|
}
|
|
|
|
/* prepare CONNECT_ACTIVE_IND message
|
|
* Note: LLC not supported by device
|
|
*/
|
|
capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_CONNECT_ACTIVE, CAPI_IND,
|
|
ap->nextMessageNumber++,
|
|
iif->ctr.cnr | ((bcs->channel + 1) << 8));
|
|
|
|
/* minimum size, all structs empty */
|
|
msgsize = CAPI_CONNECT_ACTIVE_IND_BASELEN;
|
|
|
|
/* ToDo: set parameter: Connected number
|
|
* (requires ev-layer state machine extension to collect
|
|
* ZCON device reply)
|
|
*/
|
|
|
|
/* build and emit CONNECT_ACTIVE_IND message */
|
|
skb = alloc_skb(msgsize, GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
if (capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/**
|
|
* gigaset_isdn_hupD() - signal D channel hangup
|
|
* @bcs: B channel descriptor structure.
|
|
*
|
|
* Called by main module at tasklet level to notify the LL that the D channel
|
|
* connection has been shut down.
|
|
*/
|
|
void gigaset_isdn_hupD(struct bc_state *bcs)
|
|
{
|
|
struct gigaset_capi_appl *ap;
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* ToDo: pass on reason code reported by device
|
|
* (requires ev-layer state machine extension to collect
|
|
* ZCAU device reply)
|
|
*/
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
while (bcs->ap != NULL) {
|
|
ap = bcs->ap;
|
|
bcs->ap = ap->bcnext;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
send_disconnect_b3_ind(bcs, ap);
|
|
send_disconnect_ind(bcs, ap, 0);
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
}
|
|
bcs->apconnstate = APCONN_NONE;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
}
|
|
|
|
/**
|
|
* gigaset_isdn_connB() - signal B channel connect
|
|
* @bcs: B channel descriptor structure.
|
|
*
|
|
* Called by main module at tasklet level to notify the LL that the B channel
|
|
* connection has been established.
|
|
*/
|
|
void gigaset_isdn_connB(struct bc_state *bcs)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
struct gigaset_capi_appl *ap;
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
unsigned int msgsize;
|
|
u8 command;
|
|
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
ap = bcs->ap;
|
|
if (!ap) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
gig_dbg(DEBUG_CMD, "%s: application gone", __func__);
|
|
return;
|
|
}
|
|
if (!bcs->apconnstate) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
dev_warn(cs->dev, "%s: application %u not connected\n",
|
|
__func__, ap->id);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* emit CONNECT_B3_ACTIVE_IND if we already got CONNECT_B3_REQ;
|
|
* otherwise we have to emit CONNECT_B3_IND first, and follow up with
|
|
* CONNECT_B3_ACTIVE_IND in reply to CONNECT_B3_RESP
|
|
* Parameters in both cases always: NCCI = 1, NCPI empty
|
|
*/
|
|
if (bcs->apconnstate >= APCONN_ACTIVE) {
|
|
command = CAPI_CONNECT_B3_ACTIVE;
|
|
msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN;
|
|
} else {
|
|
command = CAPI_CONNECT_B3;
|
|
msgsize = CAPI_CONNECT_B3_IND_BASELEN;
|
|
}
|
|
bcs->apconnstate = APCONN_ACTIVE;
|
|
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
|
|
while (ap->bcnext) {
|
|
/* this should never happen */
|
|
dev_warn(cs->dev, "%s: dropping extra application %u\n",
|
|
__func__, ap->bcnext->id);
|
|
send_disconnect_ind(bcs, ap->bcnext,
|
|
CapiCallGivenToOtherApplication);
|
|
ap->bcnext = ap->bcnext->bcnext;
|
|
}
|
|
|
|
capi_cmsg_header(&iif->hcmsg, ap->id, command, CAPI_IND,
|
|
ap->nextMessageNumber++,
|
|
iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16));
|
|
skb = alloc_skb(msgsize, GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
if (capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/**
|
|
* gigaset_isdn_hupB() - signal B channel hangup
|
|
* @bcs: B channel descriptor structure.
|
|
*
|
|
* Called by main module to notify the LL that the B channel connection has
|
|
* been shut down.
|
|
*/
|
|
void gigaset_isdn_hupB(struct bc_state *bcs)
|
|
{
|
|
struct gigaset_capi_appl *ap = bcs->ap;
|
|
|
|
/* ToDo: assure order of DISCONNECT_B3_IND and DISCONNECT_IND ? */
|
|
|
|
if (!ap) {
|
|
gig_dbg(DEBUG_CMD, "%s: application gone", __func__);
|
|
return;
|
|
}
|
|
|
|
send_disconnect_b3_ind(bcs, ap);
|
|
}
|
|
|
|
/**
|
|
* gigaset_isdn_start() - signal device availability
|
|
* @cs: device descriptor structure.
|
|
*
|
|
* Called by main module to notify the LL that the device is available for
|
|
* use.
|
|
*/
|
|
void gigaset_isdn_start(struct cardstate *cs)
|
|
{
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
|
|
/* fill profile data: manufacturer name */
|
|
strcpy(iif->ctr.manu, "Siemens");
|
|
/* CAPI and device version */
|
|
iif->ctr.version.majorversion = 2; /* CAPI 2.0 */
|
|
iif->ctr.version.minorversion = 0;
|
|
/* ToDo: check/assert cs->gotfwver? */
|
|
iif->ctr.version.majormanuversion = cs->fwver[0];
|
|
iif->ctr.version.minormanuversion = cs->fwver[1];
|
|
/* number of B channels supported */
|
|
iif->ctr.profile.nbchannel = cs->channels;
|
|
/* global options: internal controller, supplementary services */
|
|
iif->ctr.profile.goptions = 0x11;
|
|
/* B1 protocols: 64 kbit/s HDLC or transparent */
|
|
iif->ctr.profile.support1 = 0x03;
|
|
/* B2 protocols: transparent only */
|
|
/* ToDo: X.75 SLP ? */
|
|
iif->ctr.profile.support2 = 0x02;
|
|
/* B3 protocols: transparent only */
|
|
iif->ctr.profile.support3 = 0x01;
|
|
/* no serial number */
|
|
strcpy(iif->ctr.serial, "0");
|
|
capi_ctr_ready(&iif->ctr);
|
|
}
|
|
|
|
/**
|
|
* gigaset_isdn_stop() - signal device unavailability
|
|
* @cs: device descriptor structure.
|
|
*
|
|
* Called by main module to notify the LL that the device is no longer
|
|
* available for use.
|
|
*/
|
|
void gigaset_isdn_stop(struct cardstate *cs)
|
|
{
|
|
struct gigaset_capi_ctr *iif = cs->iif;
|
|
capi_ctr_down(&iif->ctr);
|
|
}
|
|
|
|
/*
|
|
* kernel CAPI callback methods
|
|
* ============================
|
|
*/
|
|
|
|
/*
|
|
* register CAPI application
|
|
*/
|
|
static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl,
|
|
capi_register_params *rp)
|
|
{
|
|
struct gigaset_capi_ctr *iif
|
|
= container_of(ctr, struct gigaset_capi_ctr, ctr);
|
|
struct cardstate *cs = ctr->driverdata;
|
|
struct gigaset_capi_appl *ap;
|
|
|
|
gig_dbg(DEBUG_CMD, "%s [%u] l3cnt=%u blkcnt=%u blklen=%u",
|
|
__func__, appl, rp->level3cnt, rp->datablkcnt, rp->datablklen);
|
|
|
|
list_for_each_entry(ap, &iif->appls, ctrlist)
|
|
if (ap->id == appl) {
|
|
dev_notice(cs->dev,
|
|
"application %u already registered\n", appl);
|
|
return;
|
|
}
|
|
|
|
ap = kzalloc(sizeof(*ap), GFP_KERNEL);
|
|
if (!ap) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
ap->id = appl;
|
|
ap->rp = *rp;
|
|
|
|
list_add(&ap->ctrlist, &iif->appls);
|
|
dev_info(cs->dev, "application %u registered\n", ap->id);
|
|
}
|
|
|
|
/*
|
|
* remove CAPI application from channel
|
|
* helper function to keep indentation levels down and stay in 80 columns
|
|
*/
|
|
|
|
static inline void remove_appl_from_channel(struct bc_state *bcs,
|
|
struct gigaset_capi_appl *ap)
|
|
{
|
|
struct cardstate *cs = bcs->cs;
|
|
struct gigaset_capi_appl *bcap;
|
|
unsigned long flags;
|
|
int prevconnstate;
|
|
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
bcap = bcs->ap;
|
|
if (bcap == NULL) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
return;
|
|
}
|
|
|
|
/* check first application on channel */
|
|
if (bcap == ap) {
|
|
bcs->ap = ap->bcnext;
|
|
if (bcs->ap != NULL) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
return;
|
|
}
|
|
|
|
/* none left, clear channel state */
|
|
prevconnstate = bcs->apconnstate;
|
|
bcs->apconnstate = APCONN_NONE;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
|
|
if (prevconnstate == APCONN_ACTIVE) {
|
|
dev_notice(cs->dev, "%s: hanging up channel %u\n",
|
|
__func__, bcs->channel);
|
|
gigaset_add_event(cs, &bcs->at_state,
|
|
EV_HUP, NULL, 0, NULL);
|
|
gigaset_schedule_event(cs);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* check remaining list */
|
|
do {
|
|
if (bcap->bcnext == ap) {
|
|
bcap->bcnext = bcap->bcnext->bcnext;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
return;
|
|
}
|
|
bcap = bcap->bcnext;
|
|
} while (bcap != NULL);
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
}
|
|
|
|
/*
|
|
* release CAPI application
|
|
*/
|
|
static void gigaset_release_appl(struct capi_ctr *ctr, u16 appl)
|
|
{
|
|
struct gigaset_capi_ctr *iif
|
|
= container_of(ctr, struct gigaset_capi_ctr, ctr);
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
struct gigaset_capi_appl *ap, *tmp;
|
|
unsigned ch;
|
|
|
|
gig_dbg(DEBUG_CMD, "%s [%u]", __func__, appl);
|
|
|
|
list_for_each_entry_safe(ap, tmp, &iif->appls, ctrlist)
|
|
if (ap->id == appl) {
|
|
/* remove from any channels */
|
|
for (ch = 0; ch < cs->channels; ch++)
|
|
remove_appl_from_channel(&cs->bcs[ch], ap);
|
|
|
|
/* remove from registration list */
|
|
list_del(&ap->ctrlist);
|
|
kfree(ap);
|
|
dev_info(cs->dev, "application %u released\n", appl);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* =====================================================================
|
|
* outgoing CAPI message handler
|
|
* =====================================================================
|
|
*/
|
|
|
|
/*
|
|
* helper function: emit reply message with given Info value
|
|
*/
|
|
static void send_conf(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb,
|
|
u16 info)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
|
|
/*
|
|
* _CONF replies always only have NCCI and Info parameters
|
|
* so they'll fit into the _REQ message skb
|
|
*/
|
|
capi_cmsg_answer(&iif->acmsg);
|
|
iif->acmsg.Info = info;
|
|
if (capi_cmsg2message(&iif->acmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
__skb_trim(skb, CAPI_STDCONF_LEN);
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/*
|
|
* process FACILITY_REQ message
|
|
*/
|
|
static void do_facility_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct sk_buff *cskb;
|
|
u8 *pparam;
|
|
unsigned int msgsize = CAPI_FACILITY_CONF_BASELEN;
|
|
u16 function, info;
|
|
static u8 confparam[10]; /* max. 9 octets + length byte */
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
|
|
/*
|
|
* Facility Request Parameter is not decoded by capi_message2cmsg()
|
|
* encoding depends on Facility Selector
|
|
*/
|
|
switch (cmsg->FacilitySelector) {
|
|
case CAPI_FACILITY_DTMF: /* ToDo */
|
|
info = CapiFacilityNotSupported;
|
|
confparam[0] = 2; /* length */
|
|
/* DTMF information: Unknown DTMF request */
|
|
capimsg_setu16(confparam, 1, 2);
|
|
break;
|
|
|
|
case CAPI_FACILITY_V42BIS: /* not supported */
|
|
info = CapiFacilityNotSupported;
|
|
confparam[0] = 2; /* length */
|
|
/* V.42 bis information: not available */
|
|
capimsg_setu16(confparam, 1, 1);
|
|
break;
|
|
|
|
case CAPI_FACILITY_SUPPSVC:
|
|
/* decode Function parameter */
|
|
pparam = cmsg->FacilityRequestParameter;
|
|
if (pparam == NULL || pparam[0] < 2) {
|
|
dev_notice(cs->dev, "%s: %s missing\n", "FACILITY_REQ",
|
|
"Facility Request Parameter");
|
|
send_conf(iif, ap, skb, CapiIllMessageParmCoding);
|
|
return;
|
|
}
|
|
function = CAPIMSG_U16(pparam, 1);
|
|
switch (function) {
|
|
case CAPI_SUPPSVC_GETSUPPORTED:
|
|
info = CapiSuccess;
|
|
/* Supplementary Service specific parameter */
|
|
confparam[3] = 6; /* length */
|
|
/* Supplementary services info: Success */
|
|
capimsg_setu16(confparam, 4, CapiSuccess);
|
|
/* Supported Services: none */
|
|
capimsg_setu32(confparam, 6, 0);
|
|
break;
|
|
case CAPI_SUPPSVC_LISTEN:
|
|
if (pparam[0] < 7 || pparam[3] < 4) {
|
|
dev_notice(cs->dev, "%s: %s missing\n",
|
|
"FACILITY_REQ", "Notification Mask");
|
|
send_conf(iif, ap, skb,
|
|
CapiIllMessageParmCoding);
|
|
return;
|
|
}
|
|
if (CAPIMSG_U32(pparam, 4) != 0) {
|
|
dev_notice(cs->dev,
|
|
"%s: unsupported supplementary service notification mask 0x%x\n",
|
|
"FACILITY_REQ", CAPIMSG_U32(pparam, 4));
|
|
info = CapiFacilitySpecificFunctionNotSupported;
|
|
confparam[3] = 2; /* length */
|
|
capimsg_setu16(confparam, 4,
|
|
CapiSupplementaryServiceNotSupported);
|
|
break;
|
|
}
|
|
info = CapiSuccess;
|
|
confparam[3] = 2; /* length */
|
|
capimsg_setu16(confparam, 4, CapiSuccess);
|
|
break;
|
|
|
|
/* ToDo: add supported services */
|
|
|
|
default:
|
|
dev_notice(cs->dev,
|
|
"%s: unsupported supplementary service function 0x%04x\n",
|
|
"FACILITY_REQ", function);
|
|
info = CapiFacilitySpecificFunctionNotSupported;
|
|
/* Supplementary Service specific parameter */
|
|
confparam[3] = 2; /* length */
|
|
/* Supplementary services info: not supported */
|
|
capimsg_setu16(confparam, 4,
|
|
CapiSupplementaryServiceNotSupported);
|
|
}
|
|
|
|
/* Facility confirmation parameter */
|
|
confparam[0] = confparam[3] + 3; /* total length */
|
|
/* Function: copy from _REQ message */
|
|
capimsg_setu16(confparam, 1, function);
|
|
/* Supplementary Service specific parameter already set above */
|
|
break;
|
|
|
|
case CAPI_FACILITY_WAKEUP: /* ToDo */
|
|
info = CapiFacilityNotSupported;
|
|
confparam[0] = 2; /* length */
|
|
/* Number of accepted awake request parameters: 0 */
|
|
capimsg_setu16(confparam, 1, 0);
|
|
break;
|
|
|
|
default:
|
|
info = CapiFacilityNotSupported;
|
|
confparam[0] = 0; /* empty struct */
|
|
}
|
|
|
|
/* send FACILITY_CONF with given Info and confirmation parameter */
|
|
dev_kfree_skb_any(skb);
|
|
capi_cmsg_answer(cmsg);
|
|
cmsg->Info = info;
|
|
cmsg->FacilityConfirmationParameter = confparam;
|
|
msgsize += confparam[0]; /* length */
|
|
cskb = alloc_skb(msgsize, GFP_ATOMIC);
|
|
if (!cskb) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
return;
|
|
}
|
|
if (capi_cmsg2message(cmsg, __skb_put(cskb, msgsize))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(cskb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
|
|
}
|
|
|
|
|
|
/*
|
|
* process LISTEN_REQ message
|
|
* just store the masks in the application data structure
|
|
*/
|
|
static void do_listen_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
|
|
|
|
/* store listening parameters */
|
|
ap->listenInfoMask = iif->acmsg.InfoMask;
|
|
ap->listenCIPmask = iif->acmsg.CIPmask;
|
|
send_conf(iif, ap, skb, CapiSuccess);
|
|
}
|
|
|
|
/*
|
|
* process ALERT_REQ message
|
|
* nothing to do, Gigaset always alerts anyway
|
|
*/
|
|
static void do_alert_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
|
|
send_conf(iif, ap, skb, CapiAlertAlreadySent);
|
|
}
|
|
|
|
/*
|
|
* process CONNECT_REQ message
|
|
* allocate a B channel, prepare dial commands, queue a DIAL event,
|
|
* emit CONNECT_CONF reply
|
|
*/
|
|
static void do_connect_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct bc_state *bcs;
|
|
char **commands;
|
|
char *s;
|
|
u8 *pp;
|
|
unsigned long flags;
|
|
int i, l, lbc, lhlc;
|
|
u16 info;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
|
|
/* get free B channel & construct PLCI */
|
|
bcs = gigaset_get_free_channel(cs);
|
|
if (!bcs) {
|
|
dev_notice(cs->dev, "%s: no B channel available\n",
|
|
"CONNECT_REQ");
|
|
send_conf(iif, ap, skb, CapiNoPlciAvailable);
|
|
return;
|
|
}
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
if (bcs->ap != NULL || bcs->apconnstate != APCONN_NONE)
|
|
dev_warn(cs->dev, "%s: channel not properly cleared (%p/%d)\n",
|
|
__func__, bcs->ap, bcs->apconnstate);
|
|
ap->bcnext = NULL;
|
|
bcs->ap = ap;
|
|
bcs->apconnstate = APCONN_SETUP;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
|
|
bcs->rx_bufsize = ap->rp.datablklen;
|
|
dev_kfree_skb(bcs->rx_skb);
|
|
gigaset_new_rx_skb(bcs);
|
|
cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8;
|
|
|
|
/* build command table */
|
|
commands = kcalloc(AT_NUM, sizeof(*commands), GFP_KERNEL);
|
|
if (!commands)
|
|
goto oom;
|
|
|
|
/* encode parameter: Called party number */
|
|
pp = cmsg->CalledPartyNumber;
|
|
if (pp == NULL || *pp == 0) {
|
|
dev_notice(cs->dev, "%s: %s missing\n",
|
|
"CONNECT_REQ", "Called party number");
|
|
info = CapiIllMessageParmCoding;
|
|
goto error;
|
|
}
|
|
l = *pp++;
|
|
/* check type of number/numbering plan byte */
|
|
switch (*pp) {
|
|
case 0x80: /* unknown type / unknown numbering plan */
|
|
case 0x81: /* unknown type / ISDN/Telephony numbering plan */
|
|
break;
|
|
default: /* others: warn about potential misinterpretation */
|
|
dev_notice(cs->dev, "%s: %s type/plan 0x%02x unsupported\n",
|
|
"CONNECT_REQ", "Called party number", *pp);
|
|
}
|
|
pp++;
|
|
l--;
|
|
/* translate "**" internal call prefix to CTP value */
|
|
if (l >= 2 && pp[0] == '*' && pp[1] == '*') {
|
|
s = "^SCTP=0\r";
|
|
pp += 2;
|
|
l -= 2;
|
|
} else {
|
|
s = "^SCTP=1\r";
|
|
}
|
|
commands[AT_TYPE] = kstrdup(s, GFP_KERNEL);
|
|
if (!commands[AT_TYPE])
|
|
goto oom;
|
|
commands[AT_DIAL] = kmalloc(l + 3, GFP_KERNEL);
|
|
if (!commands[AT_DIAL])
|
|
goto oom;
|
|
snprintf(commands[AT_DIAL], l + 3, "D%.*s\r", l, pp);
|
|
|
|
/* encode parameter: Calling party number */
|
|
pp = cmsg->CallingPartyNumber;
|
|
if (pp != NULL && *pp > 0) {
|
|
l = *pp++;
|
|
|
|
/* check type of number/numbering plan byte */
|
|
/* ToDo: allow for/handle Ext=1? */
|
|
switch (*pp) {
|
|
case 0x00: /* unknown type / unknown numbering plan */
|
|
case 0x01: /* unknown type / ISDN/Telephony num. plan */
|
|
break;
|
|
default:
|
|
dev_notice(cs->dev,
|
|
"%s: %s type/plan 0x%02x unsupported\n",
|
|
"CONNECT_REQ", "Calling party number", *pp);
|
|
}
|
|
pp++;
|
|
l--;
|
|
|
|
/* check presentation indicator */
|
|
if (!l) {
|
|
dev_notice(cs->dev, "%s: %s IE truncated\n",
|
|
"CONNECT_REQ", "Calling party number");
|
|
info = CapiIllMessageParmCoding;
|
|
goto error;
|
|
}
|
|
switch (*pp & 0xfc) { /* ignore Screening indicator */
|
|
case 0x80: /* Presentation allowed */
|
|
s = "^SCLIP=1\r";
|
|
break;
|
|
case 0xa0: /* Presentation restricted */
|
|
s = "^SCLIP=0\r";
|
|
break;
|
|
default:
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"CONNECT_REQ",
|
|
"Presentation/Screening indicator",
|
|
*pp);
|
|
s = "^SCLIP=1\r";
|
|
}
|
|
commands[AT_CLIP] = kstrdup(s, GFP_KERNEL);
|
|
if (!commands[AT_CLIP])
|
|
goto oom;
|
|
pp++;
|
|
l--;
|
|
|
|
if (l) {
|
|
/* number */
|
|
commands[AT_MSN] = kmalloc(l + 8, GFP_KERNEL);
|
|
if (!commands[AT_MSN])
|
|
goto oom;
|
|
snprintf(commands[AT_MSN], l + 8, "^SMSN=%*s\r", l, pp);
|
|
}
|
|
}
|
|
|
|
/* check parameter: CIP Value */
|
|
if (cmsg->CIPValue >= ARRAY_SIZE(cip2bchlc) ||
|
|
(cmsg->CIPValue > 0 && cip2bchlc[cmsg->CIPValue].bc == NULL)) {
|
|
dev_notice(cs->dev, "%s: unknown CIP value %d\n",
|
|
"CONNECT_REQ", cmsg->CIPValue);
|
|
info = CapiCipValueUnknown;
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* check/encode parameters: BC & HLC
|
|
* must be encoded together as device doesn't accept HLC separately
|
|
* explicit parameters override values derived from CIP
|
|
*/
|
|
|
|
/* determine lengths */
|
|
if (cmsg->BC && cmsg->BC[0]) /* BC specified explicitly */
|
|
lbc = 2 * cmsg->BC[0];
|
|
else if (cip2bchlc[cmsg->CIPValue].bc) /* BC derived from CIP */
|
|
lbc = strlen(cip2bchlc[cmsg->CIPValue].bc);
|
|
else /* no BC */
|
|
lbc = 0;
|
|
if (cmsg->HLC && cmsg->HLC[0]) /* HLC specified explicitly */
|
|
lhlc = 2 * cmsg->HLC[0];
|
|
else if (cip2bchlc[cmsg->CIPValue].hlc) /* HLC derived from CIP */
|
|
lhlc = strlen(cip2bchlc[cmsg->CIPValue].hlc);
|
|
else /* no HLC */
|
|
lhlc = 0;
|
|
|
|
if (lbc) {
|
|
/* have BC: allocate and assemble command string */
|
|
l = lbc + 7; /* "^SBC=" + value + "\r" + null byte */
|
|
if (lhlc)
|
|
l += lhlc + 7; /* ";^SHLC=" + value */
|
|
commands[AT_BC] = kmalloc(l, GFP_KERNEL);
|
|
if (!commands[AT_BC])
|
|
goto oom;
|
|
strcpy(commands[AT_BC], "^SBC=");
|
|
if (cmsg->BC && cmsg->BC[0]) /* BC specified explicitly */
|
|
decode_ie(cmsg->BC, commands[AT_BC] + 5);
|
|
else /* BC derived from CIP */
|
|
strcpy(commands[AT_BC] + 5,
|
|
cip2bchlc[cmsg->CIPValue].bc);
|
|
if (lhlc) {
|
|
strcpy(commands[AT_BC] + lbc + 5, ";^SHLC=");
|
|
if (cmsg->HLC && cmsg->HLC[0])
|
|
/* HLC specified explicitly */
|
|
decode_ie(cmsg->HLC,
|
|
commands[AT_BC] + lbc + 12);
|
|
else /* HLC derived from CIP */
|
|
strcpy(commands[AT_BC] + lbc + 12,
|
|
cip2bchlc[cmsg->CIPValue].hlc);
|
|
}
|
|
strcpy(commands[AT_BC] + l - 2, "\r");
|
|
} else {
|
|
/* no BC */
|
|
if (lhlc) {
|
|
dev_notice(cs->dev, "%s: cannot set HLC without BC\n",
|
|
"CONNECT_REQ");
|
|
info = CapiIllMessageParmCoding; /* ? */
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
/* check/encode parameter: B Protocol */
|
|
if (cmsg->BProtocol == CAPI_DEFAULT) {
|
|
bcs->proto2 = L2_HDLC;
|
|
dev_warn(cs->dev,
|
|
"B2 Protocol X.75 SLP unsupported, using Transparent\n");
|
|
} else {
|
|
switch (cmsg->B1protocol) {
|
|
case 0:
|
|
bcs->proto2 = L2_HDLC;
|
|
break;
|
|
case 1:
|
|
bcs->proto2 = L2_VOICE;
|
|
break;
|
|
default:
|
|
dev_warn(cs->dev,
|
|
"B1 Protocol %u unsupported, using Transparent\n",
|
|
cmsg->B1protocol);
|
|
bcs->proto2 = L2_VOICE;
|
|
}
|
|
if (cmsg->B2protocol != 1)
|
|
dev_warn(cs->dev,
|
|
"B2 Protocol %u unsupported, using Transparent\n",
|
|
cmsg->B2protocol);
|
|
if (cmsg->B3protocol != 0)
|
|
dev_warn(cs->dev,
|
|
"B3 Protocol %u unsupported, using Transparent\n",
|
|
cmsg->B3protocol);
|
|
ignore_cstruct_param(cs, cmsg->B1configuration,
|
|
"CONNECT_REQ", "B1 Configuration");
|
|
ignore_cstruct_param(cs, cmsg->B2configuration,
|
|
"CONNECT_REQ", "B2 Configuration");
|
|
ignore_cstruct_param(cs, cmsg->B3configuration,
|
|
"CONNECT_REQ", "B3 Configuration");
|
|
}
|
|
commands[AT_PROTO] = kmalloc(9, GFP_KERNEL);
|
|
if (!commands[AT_PROTO])
|
|
goto oom;
|
|
snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
|
|
|
|
/* ToDo: check/encode remaining parameters */
|
|
ignore_cstruct_param(cs, cmsg->CalledPartySubaddress,
|
|
"CONNECT_REQ", "Called pty subaddr");
|
|
ignore_cstruct_param(cs, cmsg->CallingPartySubaddress,
|
|
"CONNECT_REQ", "Calling pty subaddr");
|
|
ignore_cstruct_param(cs, cmsg->LLC,
|
|
"CONNECT_REQ", "LLC");
|
|
if (cmsg->AdditionalInfo != CAPI_DEFAULT) {
|
|
ignore_cstruct_param(cs, cmsg->BChannelinformation,
|
|
"CONNECT_REQ", "B Channel Information");
|
|
ignore_cstruct_param(cs, cmsg->Keypadfacility,
|
|
"CONNECT_REQ", "Keypad Facility");
|
|
ignore_cstruct_param(cs, cmsg->Useruserdata,
|
|
"CONNECT_REQ", "User-User Data");
|
|
ignore_cstruct_param(cs, cmsg->Facilitydataarray,
|
|
"CONNECT_REQ", "Facility Data Array");
|
|
}
|
|
|
|
/* encode parameter: B channel to use */
|
|
commands[AT_ISO] = kmalloc(9, GFP_KERNEL);
|
|
if (!commands[AT_ISO])
|
|
goto oom;
|
|
snprintf(commands[AT_ISO], 9, "^SISO=%u\r",
|
|
(unsigned) bcs->channel + 1);
|
|
|
|
/* queue & schedule EV_DIAL event */
|
|
if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands,
|
|
bcs->at_state.seq_index, NULL)) {
|
|
info = CAPI_MSGOSRESOURCEERR;
|
|
goto error;
|
|
}
|
|
gigaset_schedule_event(cs);
|
|
send_conf(iif, ap, skb, CapiSuccess);
|
|
return;
|
|
|
|
oom:
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
info = CAPI_MSGOSRESOURCEERR;
|
|
error:
|
|
if (commands)
|
|
for (i = 0; i < AT_NUM; i++)
|
|
kfree(commands[i]);
|
|
kfree(commands);
|
|
gigaset_free_channel(bcs);
|
|
send_conf(iif, ap, skb, info);
|
|
}
|
|
|
|
/*
|
|
* process CONNECT_RESP message
|
|
* checks protocol parameters and queues an ACCEPT or HUP event
|
|
*/
|
|
static void do_connect_resp(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct bc_state *bcs;
|
|
struct gigaset_capi_appl *oap;
|
|
unsigned long flags;
|
|
int channel;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
dev_kfree_skb_any(skb);
|
|
|
|
/* extract and check channel number from PLCI */
|
|
channel = (cmsg->adr.adrPLCI >> 8) & 0xff;
|
|
if (!channel || channel > cs->channels) {
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"CONNECT_RESP", "PLCI", cmsg->adr.adrPLCI);
|
|
return;
|
|
}
|
|
bcs = cs->bcs + channel - 1;
|
|
|
|
switch (cmsg->Reject) {
|
|
case 0: /* Accept */
|
|
/* drop all competing applications, keep only this one */
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
while (bcs->ap != NULL) {
|
|
oap = bcs->ap;
|
|
bcs->ap = oap->bcnext;
|
|
if (oap != ap) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
send_disconnect_ind(bcs, oap,
|
|
CapiCallGivenToOtherApplication);
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
}
|
|
}
|
|
ap->bcnext = NULL;
|
|
bcs->ap = ap;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
|
|
bcs->rx_bufsize = ap->rp.datablklen;
|
|
dev_kfree_skb(bcs->rx_skb);
|
|
gigaset_new_rx_skb(bcs);
|
|
bcs->chstate |= CHS_NOTIFY_LL;
|
|
|
|
/* check/encode B channel protocol */
|
|
if (cmsg->BProtocol == CAPI_DEFAULT) {
|
|
bcs->proto2 = L2_HDLC;
|
|
dev_warn(cs->dev,
|
|
"B2 Protocol X.75 SLP unsupported, using Transparent\n");
|
|
} else {
|
|
switch (cmsg->B1protocol) {
|
|
case 0:
|
|
bcs->proto2 = L2_HDLC;
|
|
break;
|
|
case 1:
|
|
bcs->proto2 = L2_VOICE;
|
|
break;
|
|
default:
|
|
dev_warn(cs->dev,
|
|
"B1 Protocol %u unsupported, using Transparent\n",
|
|
cmsg->B1protocol);
|
|
bcs->proto2 = L2_VOICE;
|
|
}
|
|
if (cmsg->B2protocol != 1)
|
|
dev_warn(cs->dev,
|
|
"B2 Protocol %u unsupported, using Transparent\n",
|
|
cmsg->B2protocol);
|
|
if (cmsg->B3protocol != 0)
|
|
dev_warn(cs->dev,
|
|
"B3 Protocol %u unsupported, using Transparent\n",
|
|
cmsg->B3protocol);
|
|
ignore_cstruct_param(cs, cmsg->B1configuration,
|
|
"CONNECT_RESP", "B1 Configuration");
|
|
ignore_cstruct_param(cs, cmsg->B2configuration,
|
|
"CONNECT_RESP", "B2 Configuration");
|
|
ignore_cstruct_param(cs, cmsg->B3configuration,
|
|
"CONNECT_RESP", "B3 Configuration");
|
|
}
|
|
|
|
/* ToDo: check/encode remaining parameters */
|
|
ignore_cstruct_param(cs, cmsg->ConnectedNumber,
|
|
"CONNECT_RESP", "Connected Number");
|
|
ignore_cstruct_param(cs, cmsg->ConnectedSubaddress,
|
|
"CONNECT_RESP", "Connected Subaddress");
|
|
ignore_cstruct_param(cs, cmsg->LLC,
|
|
"CONNECT_RESP", "LLC");
|
|
if (cmsg->AdditionalInfo != CAPI_DEFAULT) {
|
|
ignore_cstruct_param(cs, cmsg->BChannelinformation,
|
|
"CONNECT_RESP", "BChannel Information");
|
|
ignore_cstruct_param(cs, cmsg->Keypadfacility,
|
|
"CONNECT_RESP", "Keypad Facility");
|
|
ignore_cstruct_param(cs, cmsg->Useruserdata,
|
|
"CONNECT_RESP", "User-User Data");
|
|
ignore_cstruct_param(cs, cmsg->Facilitydataarray,
|
|
"CONNECT_RESP", "Facility Data Array");
|
|
}
|
|
|
|
/* Accept call */
|
|
if (!gigaset_add_event(cs, &cs->bcs[channel - 1].at_state,
|
|
EV_ACCEPT, NULL, 0, NULL))
|
|
return;
|
|
gigaset_schedule_event(cs);
|
|
return;
|
|
|
|
case 1: /* Ignore */
|
|
/* send DISCONNECT_IND to this application */
|
|
send_disconnect_ind(bcs, ap, 0);
|
|
|
|
/* remove it from the list of listening apps */
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
if (bcs->ap == ap) {
|
|
bcs->ap = ap->bcnext;
|
|
if (bcs->ap == NULL) {
|
|
/* last one: stop ev-layer hupD notifications */
|
|
bcs->apconnstate = APCONN_NONE;
|
|
bcs->chstate &= ~CHS_NOTIFY_LL;
|
|
}
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
return;
|
|
}
|
|
for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) {
|
|
if (oap->bcnext == ap) {
|
|
oap->bcnext = oap->bcnext->bcnext;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
return;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
dev_err(cs->dev, "%s: application %u not found\n",
|
|
__func__, ap->id);
|
|
return;
|
|
|
|
default: /* Reject */
|
|
/* drop all competing applications, keep only this one */
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
while (bcs->ap != NULL) {
|
|
oap = bcs->ap;
|
|
bcs->ap = oap->bcnext;
|
|
if (oap != ap) {
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
send_disconnect_ind(bcs, oap,
|
|
CapiCallGivenToOtherApplication);
|
|
spin_lock_irqsave(&bcs->aplock, flags);
|
|
}
|
|
}
|
|
ap->bcnext = NULL;
|
|
bcs->ap = ap;
|
|
spin_unlock_irqrestore(&bcs->aplock, flags);
|
|
|
|
/* reject call - will trigger DISCONNECT_IND for this app */
|
|
dev_info(cs->dev, "%s: Reject=%x\n",
|
|
"CONNECT_RESP", cmsg->Reject);
|
|
if (!gigaset_add_event(cs, &cs->bcs[channel - 1].at_state,
|
|
EV_HUP, NULL, 0, NULL))
|
|
return;
|
|
gigaset_schedule_event(cs);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* process CONNECT_B3_REQ message
|
|
* build NCCI and emit CONNECT_B3_CONF reply
|
|
*/
|
|
static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct bc_state *bcs;
|
|
int channel;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
|
|
/* extract and check channel number from PLCI */
|
|
channel = (cmsg->adr.adrPLCI >> 8) & 0xff;
|
|
if (!channel || channel > cs->channels) {
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"CONNECT_B3_REQ", "PLCI", cmsg->adr.adrPLCI);
|
|
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
|
|
return;
|
|
}
|
|
bcs = &cs->bcs[channel - 1];
|
|
|
|
/* mark logical connection active */
|
|
bcs->apconnstate = APCONN_ACTIVE;
|
|
|
|
/* build NCCI: always 1 (one B3 connection only) */
|
|
cmsg->adr.adrNCCI |= 1 << 16;
|
|
|
|
/* NCPI parameter: not applicable for B3 Transparent */
|
|
ignore_cstruct_param(cs, cmsg->NCPI, "CONNECT_B3_REQ", "NCPI");
|
|
send_conf(iif, ap, skb,
|
|
(cmsg->NCPI && cmsg->NCPI[0]) ?
|
|
CapiNcpiNotSupportedByProtocol : CapiSuccess);
|
|
}
|
|
|
|
/*
|
|
* process CONNECT_B3_RESP message
|
|
* Depending on the Reject parameter, either emit CONNECT_B3_ACTIVE_IND
|
|
* or queue EV_HUP and emit DISCONNECT_B3_IND.
|
|
* The emitted message is always shorter than the received one,
|
|
* allowing to reuse the skb.
|
|
*/
|
|
static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct bc_state *bcs;
|
|
int channel;
|
|
unsigned int msgsize;
|
|
u8 command;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
|
|
/* extract and check channel number and NCCI */
|
|
channel = (cmsg->adr.adrNCCI >> 8) & 0xff;
|
|
if (!channel || channel > cs->channels ||
|
|
((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) {
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"CONNECT_B3_RESP", "NCCI", cmsg->adr.adrNCCI);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
bcs = &cs->bcs[channel - 1];
|
|
|
|
if (cmsg->Reject) {
|
|
/* Reject: clear B3 connect received flag */
|
|
bcs->apconnstate = APCONN_SETUP;
|
|
|
|
/* trigger hangup, causing eventual DISCONNECT_IND */
|
|
if (!gigaset_add_event(cs, &bcs->at_state,
|
|
EV_HUP, NULL, 0, NULL)) {
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
gigaset_schedule_event(cs);
|
|
|
|
/* emit DISCONNECT_B3_IND */
|
|
command = CAPI_DISCONNECT_B3;
|
|
msgsize = CAPI_DISCONNECT_B3_IND_BASELEN;
|
|
} else {
|
|
/*
|
|
* Accept: emit CONNECT_B3_ACTIVE_IND immediately, as
|
|
* we only send CONNECT_B3_IND if the B channel is up
|
|
*/
|
|
command = CAPI_CONNECT_B3_ACTIVE;
|
|
msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN;
|
|
}
|
|
capi_cmsg_header(cmsg, ap->id, command, CAPI_IND,
|
|
ap->nextMessageNumber++, cmsg->adr.adrNCCI);
|
|
__skb_trim(skb, msgsize);
|
|
if (capi_cmsg2message(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
|
|
}
|
|
|
|
/*
|
|
* process DISCONNECT_REQ message
|
|
* schedule EV_HUP and emit DISCONNECT_B3_IND if necessary,
|
|
* emit DISCONNECT_CONF reply
|
|
*/
|
|
static void do_disconnect_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct bc_state *bcs;
|
|
_cmsg *b3cmsg;
|
|
struct sk_buff *b3skb;
|
|
int channel;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
|
|
/* extract and check channel number from PLCI */
|
|
channel = (cmsg->adr.adrPLCI >> 8) & 0xff;
|
|
if (!channel || channel > cs->channels) {
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"DISCONNECT_REQ", "PLCI", cmsg->adr.adrPLCI);
|
|
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
|
|
return;
|
|
}
|
|
bcs = cs->bcs + channel - 1;
|
|
|
|
/* ToDo: process parameter: Additional info */
|
|
if (cmsg->AdditionalInfo != CAPI_DEFAULT) {
|
|
ignore_cstruct_param(cs, cmsg->BChannelinformation,
|
|
"DISCONNECT_REQ", "B Channel Information");
|
|
ignore_cstruct_param(cs, cmsg->Keypadfacility,
|
|
"DISCONNECT_REQ", "Keypad Facility");
|
|
ignore_cstruct_param(cs, cmsg->Useruserdata,
|
|
"DISCONNECT_REQ", "User-User Data");
|
|
ignore_cstruct_param(cs, cmsg->Facilitydataarray,
|
|
"DISCONNECT_REQ", "Facility Data Array");
|
|
}
|
|
|
|
/* skip if DISCONNECT_IND already sent */
|
|
if (!bcs->apconnstate)
|
|
return;
|
|
|
|
/* check for active logical connection */
|
|
if (bcs->apconnstate >= APCONN_ACTIVE) {
|
|
/* clear it */
|
|
bcs->apconnstate = APCONN_SETUP;
|
|
|
|
/*
|
|
* emit DISCONNECT_B3_IND with cause 0x3301
|
|
* use separate cmsg structure, as the content of iif->acmsg
|
|
* is still needed for creating the _CONF message
|
|
*/
|
|
b3cmsg = kmalloc(sizeof(*b3cmsg), GFP_KERNEL);
|
|
if (!b3cmsg) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
|
|
return;
|
|
}
|
|
capi_cmsg_header(b3cmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
|
|
ap->nextMessageNumber++,
|
|
cmsg->adr.adrPLCI | (1 << 16));
|
|
b3cmsg->Reason_B3 = CapiProtocolErrorLayer1;
|
|
b3skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_KERNEL);
|
|
if (b3skb == NULL) {
|
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
|
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
|
|
kfree(b3cmsg);
|
|
return;
|
|
}
|
|
if (capi_cmsg2message(b3cmsg,
|
|
__skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN))) {
|
|
dev_err(cs->dev, "%s: message parser failure\n",
|
|
__func__);
|
|
kfree(b3cmsg);
|
|
dev_kfree_skb_any(b3skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, b3cmsg);
|
|
kfree(b3cmsg);
|
|
capi_ctr_handle_message(&iif->ctr, ap->id, b3skb);
|
|
}
|
|
|
|
/* trigger hangup, causing eventual DISCONNECT_IND */
|
|
if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) {
|
|
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
|
|
return;
|
|
}
|
|
gigaset_schedule_event(cs);
|
|
|
|
/* emit reply */
|
|
send_conf(iif, ap, skb, CapiSuccess);
|
|
}
|
|
|
|
/*
|
|
* process DISCONNECT_B3_REQ message
|
|
* schedule EV_HUP and emit DISCONNECT_B3_CONF reply
|
|
*/
|
|
static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
_cmsg *cmsg = &iif->acmsg;
|
|
struct bc_state *bcs;
|
|
int channel;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(cmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, cmsg);
|
|
|
|
/* extract and check channel number and NCCI */
|
|
channel = (cmsg->adr.adrNCCI >> 8) & 0xff;
|
|
if (!channel || channel > cs->channels ||
|
|
((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) {
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"DISCONNECT_B3_REQ", "NCCI", cmsg->adr.adrNCCI);
|
|
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
|
|
return;
|
|
}
|
|
bcs = &cs->bcs[channel - 1];
|
|
|
|
/* reject if logical connection not active */
|
|
if (bcs->apconnstate < APCONN_ACTIVE) {
|
|
send_conf(iif, ap, skb,
|
|
CapiMessageNotSupportedInCurrentState);
|
|
return;
|
|
}
|
|
|
|
/* trigger hangup, causing eventual DISCONNECT_B3_IND */
|
|
if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) {
|
|
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
|
|
return;
|
|
}
|
|
gigaset_schedule_event(cs);
|
|
|
|
/* NCPI parameter: not applicable for B3 Transparent */
|
|
ignore_cstruct_param(cs, cmsg->NCPI,
|
|
"DISCONNECT_B3_REQ", "NCPI");
|
|
send_conf(iif, ap, skb,
|
|
(cmsg->NCPI && cmsg->NCPI[0]) ?
|
|
CapiNcpiNotSupportedByProtocol : CapiSuccess);
|
|
}
|
|
|
|
/*
|
|
* process DATA_B3_REQ message
|
|
*/
|
|
static void do_data_b3_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
struct bc_state *bcs;
|
|
int channel = CAPIMSG_PLCI_PART(skb->data);
|
|
u16 ncci = CAPIMSG_NCCI_PART(skb->data);
|
|
u16 msglen = CAPIMSG_LEN(skb->data);
|
|
u16 datalen = CAPIMSG_DATALEN(skb->data);
|
|
u16 flags = CAPIMSG_FLAGS(skb->data);
|
|
u16 msgid = CAPIMSG_MSGID(skb->data);
|
|
u16 handle = CAPIMSG_HANDLE_REQ(skb->data);
|
|
|
|
/* frequent message, avoid _cmsg overhead */
|
|
dump_rawmsg(DEBUG_MCMD, __func__, skb->data);
|
|
|
|
/* check parameters */
|
|
if (channel == 0 || channel > cs->channels || ncci != 1) {
|
|
dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
|
|
"DATA_B3_REQ", "NCCI", CAPIMSG_NCCI(skb->data));
|
|
send_conf(iif, ap, skb, CapiIllContrPlciNcci);
|
|
return;
|
|
}
|
|
bcs = &cs->bcs[channel - 1];
|
|
if (msglen != CAPI_DATA_B3_REQ_LEN && msglen != CAPI_DATA_B3_REQ_LEN64)
|
|
dev_notice(cs->dev, "%s: unexpected length %d\n",
|
|
"DATA_B3_REQ", msglen);
|
|
if (msglen + datalen != skb->len)
|
|
dev_notice(cs->dev, "%s: length mismatch (%d+%d!=%d)\n",
|
|
"DATA_B3_REQ", msglen, datalen, skb->len);
|
|
if (msglen + datalen > skb->len) {
|
|
/* message too short for announced data length */
|
|
send_conf(iif, ap, skb, CapiIllMessageParmCoding); /* ? */
|
|
return;
|
|
}
|
|
if (flags & CAPI_FLAGS_RESERVED) {
|
|
dev_notice(cs->dev, "%s: reserved flags set (%x)\n",
|
|
"DATA_B3_REQ", flags);
|
|
send_conf(iif, ap, skb, CapiIllMessageParmCoding);
|
|
return;
|
|
}
|
|
|
|
/* reject if logical connection not active */
|
|
if (bcs->apconnstate < APCONN_ACTIVE) {
|
|
send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
|
|
return;
|
|
}
|
|
|
|
/* pull CAPI message into link layer header */
|
|
skb_reset_mac_header(skb);
|
|
skb->mac_len = msglen;
|
|
skb_pull(skb, msglen);
|
|
|
|
/* pass to device-specific module */
|
|
if (cs->ops->send_skb(bcs, skb) < 0) {
|
|
send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* DATA_B3_CONF will be sent by gigaset_skb_sent() only if "delivery
|
|
* confirmation" bit is set; otherwise we have to send it now
|
|
*/
|
|
if (!(flags & CAPI_FLAGS_DELIVERY_CONFIRMATION))
|
|
send_data_b3_conf(cs, &iif->ctr, ap->id, msgid, channel, handle,
|
|
flags ? CapiFlagsNotSupportedByProtocol
|
|
: CAPI_NOERROR);
|
|
}
|
|
|
|
/*
|
|
* process RESET_B3_REQ message
|
|
* just always reply "not supported by current protocol"
|
|
*/
|
|
static void do_reset_b3_req(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
|
|
send_conf(iif, ap, skb,
|
|
CapiResetProcedureNotSupportedByCurrentProtocol);
|
|
}
|
|
|
|
/*
|
|
* unsupported CAPI message handler
|
|
*/
|
|
static void do_unsupported(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
|
|
send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
|
|
}
|
|
|
|
/*
|
|
* CAPI message handler: no-op
|
|
*/
|
|
static void do_nothing(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct cardstate *cs = iif->ctr.driverdata;
|
|
|
|
/* decode message */
|
|
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
|
|
dev_err(cs->dev, "%s: message parser failure\n", __func__);
|
|
dev_kfree_skb_any(skb);
|
|
return;
|
|
}
|
|
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
static void do_data_b3_resp(struct gigaset_capi_ctr *iif,
|
|
struct gigaset_capi_appl *ap,
|
|
struct sk_buff *skb)
|
|
{
|
|
dump_rawmsg(DEBUG_MCMD, __func__, skb->data);
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
/* table of outgoing CAPI message handlers with lookup function */
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typedef void (*capi_send_handler_t)(struct gigaset_capi_ctr *,
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struct gigaset_capi_appl *,
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struct sk_buff *);
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static struct {
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u16 cmd;
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capi_send_handler_t handler;
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} capi_send_handler_table[] = {
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/* most frequent messages first for faster lookup */
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{ CAPI_DATA_B3_REQ, do_data_b3_req },
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{ CAPI_DATA_B3_RESP, do_data_b3_resp },
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{ CAPI_ALERT_REQ, do_alert_req },
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{ CAPI_CONNECT_ACTIVE_RESP, do_nothing },
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{ CAPI_CONNECT_B3_ACTIVE_RESP, do_nothing },
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{ CAPI_CONNECT_B3_REQ, do_connect_b3_req },
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{ CAPI_CONNECT_B3_RESP, do_connect_b3_resp },
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{ CAPI_CONNECT_B3_T90_ACTIVE_RESP, do_nothing },
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{ CAPI_CONNECT_REQ, do_connect_req },
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{ CAPI_CONNECT_RESP, do_connect_resp },
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{ CAPI_DISCONNECT_B3_REQ, do_disconnect_b3_req },
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{ CAPI_DISCONNECT_B3_RESP, do_nothing },
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{ CAPI_DISCONNECT_REQ, do_disconnect_req },
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{ CAPI_DISCONNECT_RESP, do_nothing },
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{ CAPI_FACILITY_REQ, do_facility_req },
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{ CAPI_FACILITY_RESP, do_nothing },
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{ CAPI_LISTEN_REQ, do_listen_req },
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{ CAPI_SELECT_B_PROTOCOL_REQ, do_unsupported },
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{ CAPI_RESET_B3_REQ, do_reset_b3_req },
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{ CAPI_RESET_B3_RESP, do_nothing },
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/*
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* ToDo: support overlap sending (requires ev-layer state
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* machine extension to generate additional ATD commands)
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*/
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{ CAPI_INFO_REQ, do_unsupported },
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{ CAPI_INFO_RESP, do_nothing },
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/*
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* ToDo: what's the proper response for these?
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*/
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{ CAPI_MANUFACTURER_REQ, do_nothing },
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{ CAPI_MANUFACTURER_RESP, do_nothing },
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};
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/* look up handler */
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static inline capi_send_handler_t lookup_capi_send_handler(const u16 cmd)
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{
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size_t i;
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for (i = 0; i < ARRAY_SIZE(capi_send_handler_table); i++)
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if (capi_send_handler_table[i].cmd == cmd)
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return capi_send_handler_table[i].handler;
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return NULL;
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}
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/**
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* gigaset_send_message() - accept a CAPI message from an application
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* @ctr: controller descriptor structure.
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* @skb: CAPI message.
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*
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* Return value: CAPI error code
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* Note: capidrv (and probably others, too) only uses the return value to
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* decide whether it has to free the skb (only if result != CAPI_NOERROR (0))
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*/
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static u16 gigaset_send_message(struct capi_ctr *ctr, struct sk_buff *skb)
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{
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struct gigaset_capi_ctr *iif
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= container_of(ctr, struct gigaset_capi_ctr, ctr);
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struct cardstate *cs = ctr->driverdata;
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struct gigaset_capi_appl *ap;
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capi_send_handler_t handler;
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/* can only handle linear sk_buffs */
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if (skb_linearize(skb) < 0) {
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dev_warn(cs->dev, "%s: skb_linearize failed\n", __func__);
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return CAPI_MSGOSRESOURCEERR;
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}
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/* retrieve application data structure */
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ap = get_appl(iif, CAPIMSG_APPID(skb->data));
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if (!ap) {
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dev_notice(cs->dev, "%s: application %u not registered\n",
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__func__, CAPIMSG_APPID(skb->data));
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return CAPI_ILLAPPNR;
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}
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/* look up command */
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handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data));
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if (!handler) {
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/* unknown/unsupported message type */
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if (printk_ratelimit())
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dev_notice(cs->dev, "%s: unsupported message %u\n",
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__func__, CAPIMSG_CMD(skb->data));
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return CAPI_ILLCMDORSUBCMDORMSGTOSMALL;
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}
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/* serialize */
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if (atomic_add_return(1, &iif->sendqlen) > 1) {
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/* queue behind other messages */
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skb_queue_tail(&iif->sendqueue, skb);
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return CAPI_NOERROR;
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}
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/* process message */
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handler(iif, ap, skb);
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/* process other messages arrived in the meantime */
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while (atomic_sub_return(1, &iif->sendqlen) > 0) {
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skb = skb_dequeue(&iif->sendqueue);
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if (!skb) {
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/* should never happen */
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dev_err(cs->dev, "%s: send queue empty\n", __func__);
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continue;
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}
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ap = get_appl(iif, CAPIMSG_APPID(skb->data));
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if (!ap) {
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/* could that happen? */
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dev_warn(cs->dev, "%s: application %u vanished\n",
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__func__, CAPIMSG_APPID(skb->data));
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continue;
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}
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handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data));
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if (!handler) {
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/* should never happen */
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dev_err(cs->dev, "%s: handler %x vanished\n",
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__func__, CAPIMSG_CMD(skb->data));
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continue;
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}
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handler(iif, ap, skb);
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}
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return CAPI_NOERROR;
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}
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/**
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* gigaset_procinfo() - build single line description for controller
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* @ctr: controller descriptor structure.
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*
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* Return value: pointer to generated string (null terminated)
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*/
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static char *gigaset_procinfo(struct capi_ctr *ctr)
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{
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return ctr->name; /* ToDo: more? */
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}
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static int gigaset_proc_show(struct seq_file *m, void *v)
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{
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struct capi_ctr *ctr = m->private;
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struct cardstate *cs = ctr->driverdata;
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char *s;
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int i;
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seq_printf(m, "%-16s %s\n", "name", ctr->name);
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seq_printf(m, "%-16s %s %s\n", "dev",
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dev_driver_string(cs->dev), dev_name(cs->dev));
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seq_printf(m, "%-16s %d\n", "id", cs->myid);
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if (cs->gotfwver)
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seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware",
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cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]);
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seq_printf(m, "%-16s %d\n", "channels", cs->channels);
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seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no");
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switch (cs->mode) {
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case M_UNKNOWN:
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s = "unknown";
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break;
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case M_CONFIG:
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s = "config";
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break;
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case M_UNIMODEM:
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s = "Unimodem";
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break;
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case M_CID:
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s = "CID";
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break;
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default:
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s = "??";
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}
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seq_printf(m, "%-16s %s\n", "mode", s);
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switch (cs->mstate) {
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case MS_UNINITIALIZED:
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s = "uninitialized";
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break;
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case MS_INIT:
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s = "init";
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break;
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case MS_LOCKED:
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s = "locked";
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break;
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case MS_SHUTDOWN:
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s = "shutdown";
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break;
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case MS_RECOVER:
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s = "recover";
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break;
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case MS_READY:
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s = "ready";
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break;
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default:
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s = "??";
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}
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seq_printf(m, "%-16s %s\n", "mstate", s);
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seq_printf(m, "%-16s %s\n", "running", cs->running ? "yes" : "no");
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seq_printf(m, "%-16s %s\n", "connected", cs->connected ? "yes" : "no");
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seq_printf(m, "%-16s %s\n", "isdn_up", cs->isdn_up ? "yes" : "no");
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seq_printf(m, "%-16s %s\n", "cidmode", cs->cidmode ? "yes" : "no");
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for (i = 0; i < cs->channels; i++) {
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seq_printf(m, "[%d]%-13s %d\n", i, "corrupted",
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cs->bcs[i].corrupted);
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seq_printf(m, "[%d]%-13s %d\n", i, "trans_down",
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cs->bcs[i].trans_down);
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seq_printf(m, "[%d]%-13s %d\n", i, "trans_up",
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cs->bcs[i].trans_up);
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seq_printf(m, "[%d]%-13s %d\n", i, "chstate",
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cs->bcs[i].chstate);
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switch (cs->bcs[i].proto2) {
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case L2_BITSYNC:
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s = "bitsync";
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break;
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case L2_HDLC:
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s = "HDLC";
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break;
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case L2_VOICE:
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s = "voice";
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break;
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default:
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s = "??";
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}
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seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s);
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}
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return 0;
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}
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/**
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* gigaset_isdn_regdev() - register device to LL
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* @cs: device descriptor structure.
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* @isdnid: device name.
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*
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* Return value: 0 on success, error code < 0 on failure
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*/
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int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
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{
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struct gigaset_capi_ctr *iif;
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int rc;
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iif = kzalloc(sizeof(*iif), GFP_KERNEL);
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if (!iif) {
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pr_err("%s: out of memory\n", __func__);
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return -ENOMEM;
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}
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/* prepare controller structure */
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iif->ctr.owner = THIS_MODULE;
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iif->ctr.driverdata = cs;
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strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name) - 1);
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iif->ctr.driver_name = "gigaset";
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iif->ctr.load_firmware = NULL;
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iif->ctr.reset_ctr = NULL;
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iif->ctr.register_appl = gigaset_register_appl;
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iif->ctr.release_appl = gigaset_release_appl;
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iif->ctr.send_message = gigaset_send_message;
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iif->ctr.procinfo = gigaset_procinfo;
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iif->ctr.proc_show = gigaset_proc_show,
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INIT_LIST_HEAD(&iif->appls);
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skb_queue_head_init(&iif->sendqueue);
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atomic_set(&iif->sendqlen, 0);
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/* register controller with CAPI */
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rc = attach_capi_ctr(&iif->ctr);
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if (rc) {
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pr_err("attach_capi_ctr failed (%d)\n", rc);
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kfree(iif);
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return rc;
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}
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cs->iif = iif;
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cs->hw_hdr_len = CAPI_DATA_B3_REQ_LEN;
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return 0;
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}
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/**
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* gigaset_isdn_unregdev() - unregister device from LL
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* @cs: device descriptor structure.
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*/
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void gigaset_isdn_unregdev(struct cardstate *cs)
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{
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struct gigaset_capi_ctr *iif = cs->iif;
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detach_capi_ctr(&iif->ctr);
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kfree(iif);
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cs->iif = NULL;
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}
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static struct capi_driver capi_driver_gigaset = {
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.name = "gigaset",
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.revision = "1.0",
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};
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/**
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* gigaset_isdn_regdrv() - register driver to LL
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*/
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void gigaset_isdn_regdrv(void)
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{
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pr_info("Kernel CAPI interface\n");
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register_capi_driver(&capi_driver_gigaset);
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}
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/**
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* gigaset_isdn_unregdrv() - unregister driver from LL
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*/
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void gigaset_isdn_unregdrv(void)
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{
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unregister_capi_driver(&capi_driver_gigaset);
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}
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