diff options
Diffstat (limited to 'drivers/isdn/mISDN/l1oip_core.c')
| -rw-r--r-- | drivers/isdn/mISDN/l1oip_core.c | 581 |
1 files changed, 290 insertions, 291 deletions
diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c index 04f115a9c43e..0f88acf1185f 100644 --- a/drivers/isdn/mISDN/l1oip_core.c +++ b/drivers/isdn/mISDN/l1oip_core.c @@ -24,63 +24,63 @@ /* module parameters: * type: - Value 1 = BRI - Value 2 = PRI - Value 3 = BRI (multi channel frame, not supported yet) - Value 4 = PRI (multi channel frame, not supported yet) - A multi channel frame reduces overhead to a single frame for all - b-channels, but increases delay. - (NOTE: Multi channel frames are not implemented yet.) + Value 1 = BRI + Value 2 = PRI + Value 3 = BRI (multi channel frame, not supported yet) + Value 4 = PRI (multi channel frame, not supported yet) + A multi channel frame reduces overhead to a single frame for all + b-channels, but increases delay. + (NOTE: Multi channel frames are not implemented yet.) * codec: - Value 0 = transparent (default) - Value 1 = transfer ALAW - Value 2 = transfer ULAW - Value 3 = transfer generic 4 bit compression. + Value 0 = transparent (default) + Value 1 = transfer ALAW + Value 2 = transfer ULAW + Value 3 = transfer generic 4 bit compression. * ulaw: - 0 = we use a-Law (default) - 1 = we use u-Law + 0 = we use a-Law (default) + 1 = we use u-Law * limit: - limitation of B-channels to control bandwidth (1...126) - BRI: 1 or 2 - PRI: 1-30, 31-126 (126, because dchannel ist not counted here) - Also limited ressources are used for stack, resulting in less channels. - It is possible to have more channels than 30 in PRI mode, this must - be supported by the application. + limitation of B-channels to control bandwidth (1...126) + BRI: 1 or 2 + PRI: 1-30, 31-126 (126, because dchannel ist not counted here) + Also limited ressources are used for stack, resulting in less channels. + It is possible to have more channels than 30 in PRI mode, this must + be supported by the application. * ip: - byte representation of remote ip address (127.0.0.1 -> 127,0,0,1) - If not given or four 0, no remote address is set. - For multiple interfaces, concat ip addresses. (127,0,0,1,127,0,0,1) + byte representation of remote ip address (127.0.0.1 -> 127,0,0,1) + If not given or four 0, no remote address is set. + For multiple interfaces, concat ip addresses. (127,0,0,1,127,0,0,1) * port: - port number (local interface) - If not given or 0, port 931 is used for fist instance, 932 for next... - For multiple interfaces, different ports must be given. + port number (local interface) + If not given or 0, port 931 is used for fist instance, 932 for next... + For multiple interfaces, different ports must be given. * remoteport: - port number (remote interface) - If not given or 0, remote port equals local port - For multiple interfaces on equal sites, different ports must be given. + port number (remote interface) + If not given or 0, remote port equals local port + For multiple interfaces on equal sites, different ports must be given. * ondemand: - 0 = fixed (always transmit packets, even when remote side timed out) - 1 = on demand (only transmit packets, when remote side is detected) - the default is 0 - NOTE: ID must also be set for on demand. + 0 = fixed (always transmit packets, even when remote side timed out) + 1 = on demand (only transmit packets, when remote side is detected) + the default is 0 + NOTE: ID must also be set for on demand. * id: - optional value to identify frames. This value must be equal on both - peers and should be random. If omitted or 0, no ID is transmitted. + optional value to identify frames. This value must be equal on both + peers and should be random. If omitted or 0, no ID is transmitted. * debug: - NOTE: only one debug value must be given for all cards - enable debugging (see l1oip.h for debug options) + NOTE: only one debug value must be given for all cards + enable debugging (see l1oip.h for debug options) -Special mISDN controls: + Special mISDN controls: op = MISDN_CTRL_SETPEER* p1 = bytes 0-3 : remote IP address in network order (left element first) @@ -91,133 +91,133 @@ Special mISDN controls: op = MISDN_CTRL_UNSETPEER* * Use l1oipctrl for comfortable setting or removing ip address. - (Layer 1 Over IP CTRL) + (Layer 1 Over IP CTRL) -L1oIP-Protocol --------------- + L1oIP-Protocol + -------------- -Frame Header: + Frame Header: 7 6 5 4 3 2 1 0 -+---------------+ -|Ver|T|I|Coding | -+---------------+ -| ID byte 3 * | -+---------------+ -| ID byte 2 * | -+---------------+ -| ID byte 1 * | -+---------------+ -| ID byte 0 * | -+---------------+ -|M| Channel | -+---------------+ -| Length * | -+---------------+ -| Time Base MSB | -+---------------+ -| Time Base LSB | -+---------------+ -| Data.... | - -... - -| | -+---------------+ -|M| Channel | -+---------------+ -| Length * | -+---------------+ -| Time Base MSB | -+---------------+ -| Time Base LSB | -+---------------+ -| Data.... | - -... - - -* Only included in some cases. - -- Ver = Version -If version is missmatch, the frame must be ignored. - -- T = Type of interface -Must be 0 for S0 or 1 for E1. - -- I = Id present -If bit is set, four ID bytes are included in frame. - -- ID = Connection ID -Additional ID to prevent Denial of Service attacs. Also it prevents hijacking -connections with dynamic IP. The ID should be random and must not be 0. - -- Coding = Type of codec -Must be 0 for no transcoding. Also for D-channel and other HDLC frames. + +---------------+ + |Ver|T|I|Coding | + +---------------+ + | ID byte 3 * | + +---------------+ + | ID byte 2 * | + +---------------+ + | ID byte 1 * | + +---------------+ + | ID byte 0 * | + +---------------+ + |M| Channel | + +---------------+ + | Length * | + +---------------+ + | Time Base MSB | + +---------------+ + | Time Base LSB | + +---------------+ + | Data.... | + + ... + + | | + +---------------+ + |M| Channel | + +---------------+ + | Length * | + +---------------+ + | Time Base MSB | + +---------------+ + | Time Base LSB | + +---------------+ + | Data.... | + + ... + + + * Only included in some cases. + + - Ver = Version + If version is missmatch, the frame must be ignored. + + - T = Type of interface + Must be 0 for S0 or 1 for E1. + + - I = Id present + If bit is set, four ID bytes are included in frame. + + - ID = Connection ID + Additional ID to prevent Denial of Service attacs. Also it prevents hijacking + connections with dynamic IP. The ID should be random and must not be 0. + + - Coding = Type of codec + Must be 0 for no transcoding. Also for D-channel and other HDLC frames. 1 and 2 are reserved for explicitly use of a-LAW or u-LAW codec. 3 is used for generic table compressor. -- M = More channels to come. If this flag is 1, the following byte contains -the length of the channel data. After the data block, the next channel will -be defined. The flag for the last channel block (or if only one channel is -transmitted), must be 0 and no length is given. + - M = More channels to come. If this flag is 1, the following byte contains + the length of the channel data. After the data block, the next channel will + be defined. The flag for the last channel block (or if only one channel is + transmitted), must be 0 and no length is given. -- Channel = Channel number -0 reserved -1-3 channel data for S0 (3 is D-channel) -1-31 channel data for E1 (16 is D-channel) -32-127 channel data for extended E1 (16 is D-channel) + - Channel = Channel number + 0 reserved + 1-3 channel data for S0 (3 is D-channel) + 1-31 channel data for E1 (16 is D-channel) + 32-127 channel data for extended E1 (16 is D-channel) -- The length is used if the M-flag is 1. It is used to find the next channel -inside frame. -NOTE: A value of 0 equals 256 bytes of data. + - The length is used if the M-flag is 1. It is used to find the next channel + inside frame. + NOTE: A value of 0 equals 256 bytes of data. -> For larger data blocks, a single frame must be used. -> For larger streams, a single frame or multiple blocks with same channel ID - must be used. + must be used. -- Time Base = Timestamp of first sample in frame -The "Time Base" is used to rearange packets and to detect packet loss. -The 16 bits are sent in network order (MSB first) and count 1/8000 th of a -second. This causes a wrap around each 8,192 seconds. There is no requirement -for the initial "Time Base", but 0 should be used for the first packet. -In case of HDLC data, this timestamp counts the packet or byte number. + - Time Base = Timestamp of first sample in frame + The "Time Base" is used to rearange packets and to detect packet loss. + The 16 bits are sent in network order (MSB first) and count 1/8000 th of a + second. This causes a wrap around each 8,192 seconds. There is no requirement + for the initial "Time Base", but 0 should be used for the first packet. + In case of HDLC data, this timestamp counts the packet or byte number. -Two Timers: + Two Timers: -After initialisation, a timer of 15 seconds is started. Whenever a packet is -transmitted, the timer is reset to 15 seconds again. If the timer expires, an -empty packet is transmitted. This keep the connection alive. + After initialisation, a timer of 15 seconds is started. Whenever a packet is + transmitted, the timer is reset to 15 seconds again. If the timer expires, an + empty packet is transmitted. This keep the connection alive. -When a valid packet is received, a timer 65 seconds is started. The interface -become ACTIVE. If the timer expires, the interface becomes INACTIVE. + When a valid packet is received, a timer 65 seconds is started. The interface + become ACTIVE. If the timer expires, the interface becomes INACTIVE. -Dynamic IP handling: + Dynamic IP handling: -To allow dynamic IP, the ID must be non 0. In this case, any packet with the -correct port number and ID will be accepted. If the remote side changes its IP -the new IP is used for all transmitted packets until it changes again. + To allow dynamic IP, the ID must be non 0. In this case, any packet with the + correct port number and ID will be accepted. If the remote side changes its IP + the new IP is used for all transmitted packets until it changes again. -On Demand: + On Demand: -If the ondemand parameter is given, the remote IP is set to 0 on timeout. -This will stop keepalive traffic to remote. If the remote is online again, -traffic will continue to the remote address. This is useful for road warriors. -This feature only works with ID set, otherwhise it is highly unsecure. + If the ondemand parameter is given, the remote IP is set to 0 on timeout. + This will stop keepalive traffic to remote. If the remote is online again, + traffic will continue to the remote address. This is useful for road warriors. + This feature only works with ID set, otherwhise it is highly unsecure. -Socket and Thread ------------------ + Socket and Thread + ----------------- -The complete socket opening and closing is done by a thread. -When the thread opened a socket, the hc->socket descriptor is set. Whenever a -packet shall be sent to the socket, the hc->socket must be checked wheter not -NULL. To prevent change in socket descriptor, the hc->socket_lock must be used. -To change the socket, a recall of l1oip_socket_open() will safely kill the -socket process and create a new one. + The complete socket opening and closing is done by a thread. + When the thread opened a socket, the hc->socket descriptor is set. Whenever a + packet shall be sent to the socket, the hc->socket must be checked wheter not + NULL. To prevent change in socket descriptor, the hc->socket_lock must be used. + To change the socket, a recall of l1oip_socket_open() will safely kill the + socket process and create a new one. */ @@ -247,7 +247,7 @@ static struct list_head l1oip_ilist; #define MAX_CARDS 16 static u_int type[MAX_CARDS]; static u_int codec[MAX_CARDS]; -static u_int ip[MAX_CARDS*4]; +static u_int ip[MAX_CARDS * 4]; static u_int port[MAX_CARDS]; static u_int remoteport[MAX_CARDS]; static u_int ondemand[MAX_CARDS]; @@ -274,26 +274,26 @@ module_param(debug, uint, S_IRUGO | S_IWUSR); */ static int l1oip_socket_send(struct l1oip *hc, u8 localcodec, u8 channel, u32 chanmask, - u16 timebase, u8 *buf, int len) + u16 timebase, u8 *buf, int len) { u8 *p; int multi = 0; - u8 frame[len+32]; + u8 frame[len + 32]; struct socket *socket = NULL; if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: sending data to socket (len = %d)\n", - __func__, len); + __func__, len); p = frame; /* restart timer */ - if ((int)(hc->keep_tl.expires-jiffies) < 5*HZ) { + if ((int)(hc->keep_tl.expires-jiffies) < 5 * HZ) { del_timer(&hc->keep_tl); - hc->keep_tl.expires = jiffies + L1OIP_KEEPALIVE*HZ; + hc->keep_tl.expires = jiffies + L1OIP_KEEPALIVE * HZ; add_timer(&hc->keep_tl); } else - hc->keep_tl.expires = jiffies + L1OIP_KEEPALIVE*HZ; + hc->keep_tl.expires = jiffies + L1OIP_KEEPALIVE * HZ; if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: resetting timer\n", __func__); @@ -302,25 +302,25 @@ l1oip_socket_send(struct l1oip *hc, u8 localcodec, u8 channel, u32 chanmask, if (!hc->sin_remote.sin_addr.s_addr || !hc->sin_remote.sin_port) { if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: dropping frame, because remote " - "IP is not set.\n", __func__); + "IP is not set.\n", __func__); return len; } /* assemble frame */ - *p++ = (L1OIP_VERSION<<6) /* version and coding */ - | (hc->pri ? 0x20 : 0x00) /* type */ - | (hc->id ? 0x10 : 0x00) /* id */ - | localcodec; + *p++ = (L1OIP_VERSION << 6) /* version and coding */ + | (hc->pri ? 0x20 : 0x00) /* type */ + | (hc->id ? 0x10 : 0x00) /* id */ + | localcodec; if (hc->id) { - *p++ = hc->id>>24; /* id */ - *p++ = hc->id>>16; - *p++ = hc->id>>8; + *p++ = hc->id >> 24; /* id */ + *p++ = hc->id >> 16; + *p++ = hc->id >> 8; *p++ = hc->id; } *p++ = (multi == 1) ? 0x80 : 0x00 + channel; /* m-flag, channel */ if (multi == 1) *p++ = len; /* length */ - *p++ = timebase>>8; /* time base */ + *p++ = timebase >> 8; /* time base */ *p++ = timebase; if (buf && len) { /* add data to frame */ @@ -330,7 +330,7 @@ l1oip_socket_send(struct l1oip *hc, u8 localcodec, u8 channel, u32 chanmask, l1oip_alaw_to_ulaw(buf, len, p); else if (localcodec == 3) len = l1oip_law_to_4bit(buf, len, p, - &hc->chan[channel].codecstate); + &hc->chan[channel].codecstate); else memcpy(p, buf, len); } @@ -349,7 +349,7 @@ l1oip_socket_send(struct l1oip *hc, u8 localcodec, u8 channel, u32 chanmask, /* send packet */ if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: sending packet to socket (len " - "= %d)\n", __func__, len); + "= %d)\n", __func__, len); hc->sendiov.iov_base = frame; hc->sendiov.iov_len = len; len = kernel_sendmsg(socket, &hc->sendmsg, &hc->sendiov, 1, len); @@ -365,7 +365,7 @@ l1oip_socket_send(struct l1oip *hc, u8 localcodec, u8 channel, u32 chanmask, */ static void l1oip_socket_recv(struct l1oip *hc, u8 remotecodec, u8 channel, u16 timebase, - u8 *buf, int len) + u8 *buf, int len) { struct sk_buff *nskb; struct bchannel *bch; @@ -376,34 +376,34 @@ l1oip_socket_recv(struct l1oip *hc, u8 remotecodec, u8 channel, u16 timebase, if (len == 0) { if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: received empty keepalive data, " - "ignoring\n", __func__); + "ignoring\n", __func__); return; } if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: received data, sending to mISDN (%d)\n", - __func__, len); + __func__, len); if (channel < 1 || channel > 127) { printk(KERN_WARNING "%s: packet error - channel %d out of " - "range\n", __func__, channel); + "range\n", __func__, channel); return; } dch = hc->chan[channel].dch; bch = hc->chan[channel].bch; if (!dch && !bch) { printk(KERN_WARNING "%s: packet error - channel %d not in " - "stack\n", __func__, channel); + "stack\n", __func__, channel); return; } /* prepare message */ - nskb = mI_alloc_skb((remotecodec == 3) ? (len<<1) : len, GFP_ATOMIC); + nskb = mI_alloc_skb((remotecodec == 3) ? (len << 1) : len, GFP_ATOMIC); if (!nskb) { printk(KERN_ERR "%s: No mem for skb.\n", __func__); return; } - p = skb_put(nskb, (remotecodec == 3) ? (len<<1) : len); + p = skb_put(nskb, (remotecodec == 3) ? (len << 1) : len); if (remotecodec == 1 && ulaw) l1oip_alaw_to_ulaw(buf, len, p); @@ -428,7 +428,7 @@ l1oip_socket_recv(struct l1oip *hc, u8 remotecodec, u8 channel, u16 timebase, rx_counter = (rx_counter & 0xffff0000) | timebase; else - rx_counter = ((rx_counter & 0xffff0000)+0x10000) + rx_counter = ((rx_counter & 0xffff0000) + 0x10000) | timebase; } else { /* time has changed backwards */ @@ -436,7 +436,7 @@ l1oip_socket_recv(struct l1oip *hc, u8 remotecodec, u8 channel, u16 timebase, rx_counter = (rx_counter & 0xffff0000) | timebase; else - rx_counter = ((rx_counter & 0xffff0000)-0x10000) + rx_counter = ((rx_counter & 0xffff0000) - 0x10000) | timebase; } hc->chan[channel].rx_counter = rx_counter; @@ -476,42 +476,42 @@ l1oip_socket_parse(struct l1oip *hc, struct sockaddr_in *sin, u8 *buf, int len) if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: received frame, parsing... (%d)\n", - __func__, len); + __func__, len); /* check length */ - if (len < 1+1+2) { + if (len < 1 + 1 + 2) { printk(KERN_WARNING "%s: packet error - length %d below " - "4 bytes\n", __func__, len); + "4 bytes\n", __func__, len); return; } /* check version */ - if (((*buf)>>6) != L1OIP_VERSION) { + if (((*buf) >> 6) != L1OIP_VERSION) { printk(KERN_WARNING "%s: packet error - unknown version %d\n", - __func__, buf[0]>>6); + __func__, buf[0]>>6); return; } /* check type */ - if (((*buf)&0x20) && !hc->pri) { + if (((*buf) & 0x20) && !hc->pri) { printk(KERN_WARNING "%s: packet error - received E1 packet " - "on S0 interface\n", __func__); + "on S0 interface\n", __func__); return; } - if (!((*buf)&0x20) && hc->pri) { + if (!((*buf) & 0x20) && hc->pri) { printk(KERN_WARNING "%s: packet error - received S0 packet " - "on E1 interface\n", __func__); + "on E1 interface\n", __func__); return; } /* get id flag */ - packet_id = (*buf>>4)&1; + packet_id = (*buf >> 4) & 1; /* check coding */ remotecodec = (*buf) & 0x0f; if (remotecodec > 3) { printk(KERN_WARNING "%s: packet error - remotecodec %d " - "unsupported\n", __func__, remotecodec); + "unsupported\n", __func__, remotecodec); return; } buf++; @@ -521,12 +521,12 @@ l1oip_socket_parse(struct l1oip *hc, struct sockaddr_in *sin, u8 *buf, int len) if (packet_id) { if (!hc->id) { printk(KERN_WARNING "%s: packet error - packet has id " - "0x%x, but we have not\n", __func__, packet_id); + "0x%x, but we have not\n", __func__, packet_id); return; } if (len < 4) { printk(KERN_WARNING "%s: packet error - packet too " - "short for ID value\n", __func__); + "short for ID value\n", __func__); return; } packet_id = (*buf++) << 24; @@ -537,14 +537,14 @@ l1oip_socket_parse(struct l1oip *hc, struct sockaddr_in *sin, u8 *buf, int len) if (packet_id != hc->id) { printk(KERN_WARNING "%s: packet error - ID mismatch, " - "got 0x%x, we 0x%x\n", - __func__, packet_id, hc->id); + "got 0x%x, we 0x%x\n", + __func__, packet_id, hc->id); return; } } else { if (hc->id) { printk(KERN_WARNING "%s: packet error - packet has no " - "ID, but we have\n", __func__); + "ID, but we have\n", __func__); return; } } @@ -552,13 +552,13 @@ l1oip_socket_parse(struct l1oip *hc, struct sockaddr_in *sin, u8 *buf, int len) multiframe: if (len < 1) { printk(KERN_WARNING "%s: packet error - packet too short, " - "channel expected at position %d.\n", - __func__, len-len_start+1); + "channel expected at position %d.\n", + __func__, len-len_start + 1); return; } /* get channel and multiframe flag */ - channel = *buf&0x7f; + channel = *buf & 0x7f; m = *buf >> 7; buf++; len--; @@ -567,8 +567,8 @@ multiframe: if (m) { if (len < 1) { printk(KERN_WARNING "%s: packet error - packet too " - "short, length expected at position %d.\n", - __func__, len_start-len-1); + "short, length expected at position %d.\n", + __func__, len_start - len - 1); return; } @@ -576,26 +576,26 @@ multiframe: len--; if (mlen == 0) mlen = 256; - if (len < mlen+3) { + if (len < mlen + 3) { printk(KERN_WARNING "%s: packet error - length %d at " - "position %d exceeds total length %d.\n", - __func__, mlen, len_start-len-1, len_start); + "position %d exceeds total length %d.\n", + __func__, mlen, len_start-len - 1, len_start); return; } - if (len == mlen+3) { + if (len == mlen + 3) { printk(KERN_WARNING "%s: packet error - length %d at " - "position %d will not allow additional " - "packet.\n", - __func__, mlen, len_start-len+1); + "position %d will not allow additional " + "packet.\n", + __func__, mlen, len_start-len + 1); return; } } else - mlen = len-2; /* single frame, subtract timebase */ + mlen = len - 2; /* single frame, subtract timebase */ if (len < 2) { printk(KERN_WARNING "%s: packet error - packet too short, time " - "base expected at position %d.\n", - __func__, len-len_start+1); + "base expected at position %d.\n", + __func__, len-len_start + 1); return; } @@ -606,12 +606,12 @@ multiframe: /* if inactive, we send up a PH_ACTIVATE and activate */ if (!test_bit(FLG_ACTIVE, &dch->Flags)) { - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: interface become active due to " - "received packet\n", __func__); + "received packet\n", __func__); test_and_set_bit(FLG_ACTIVE, &dch->Flags); _queue_data(&dch->dev.D, PH_ACTIVATE_IND, MISDN_ID_ANY, 0, - NULL, GFP_ATOMIC); + NULL, GFP_ATOMIC); } /* distribute packet */ @@ -624,24 +624,24 @@ multiframe: goto multiframe; /* restart timer */ - if ((int)(hc->timeout_tl.expires-jiffies) < 5*HZ || !hc->timeout_on) { + if ((int)(hc->timeout_tl.expires-jiffies) < 5 * HZ || !hc->timeout_on) { hc->timeout_on = 1; del_timer(&hc->timeout_tl); - hc->timeout_tl.expires = jiffies + L1OIP_TIMEOUT*HZ; + hc->timeout_tl.expires = jiffies + L1OIP_TIMEOUT * HZ; add_timer(&hc->timeout_tl); } else /* only adjust timer */ - hc->timeout_tl.expires = jiffies + L1OIP_TIMEOUT*HZ; + hc->timeout_tl.expires = jiffies + L1OIP_TIMEOUT * HZ; /* if ip or source port changes */ if ((hc->sin_remote.sin_addr.s_addr != sin->sin_addr.s_addr) - || (hc->sin_remote.sin_port != sin->sin_port)) { + || (hc->sin_remote.sin_port != sin->sin_port)) { if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: remote address changes from " - "0x%08x to 0x%08x (port %d to %d)\n", __func__, - ntohl(hc->sin_remote.sin_addr.s_addr), - ntohl(sin->sin_addr.s_addr), - ntohs(hc->sin_remote.sin_port), - ntohs(sin->sin_port)); + "0x%08x to 0x%08x (port %d to %d)\n", __func__, + ntohl(hc->sin_remote.sin_addr.s_addr), + ntohl(sin->sin_addr.s_addr), + ntohs(hc->sin_remote.sin_port), + ntohs(sin->sin_port)); hc->sin_remote.sin_addr.s_addr = sin->sin_addr.s_addr; hc->sin_remote.sin_port = sin->sin_port; } @@ -694,9 +694,9 @@ l1oip_socket_thread(void *data) /* bind to incomming port */ if (socket->ops->bind(socket, (struct sockaddr *)&hc->sin_local, - sizeof(hc->sin_local))) { + sizeof(hc->sin_local))) { printk(KERN_ERR "%s: Failed to bind socket to port %d.\n", - __func__, hc->localport); + __func__, hc->localport); ret = -EINVAL; goto fail; } @@ -728,7 +728,7 @@ l1oip_socket_thread(void *data) /* read loop */ if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: socket created and open\n", - __func__); + __func__); while (!signal_pending(current)) { struct kvec iov = { .iov_base = recvbuf, @@ -741,7 +741,7 @@ l1oip_socket_thread(void *data) } else { if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_WARNING - "%s: broken pipe on socket\n", __func__); + "%s: broken pipe on socket\n", __func__); } } @@ -750,7 +750,7 @@ l1oip_socket_thread(void *data) /* if hc->socket is NULL, it is in use until it is given back */ while (!hc->socket) { spin_unlock(&hc->socket_lock); - schedule_timeout(HZ/10); + schedule_timeout(HZ / 10); spin_lock(&hc->socket_lock); } hc->socket = NULL; @@ -758,7 +758,7 @@ l1oip_socket_thread(void *data) if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: socket thread terminating\n", - __func__); + __func__); fail: /* free recvbuf */ @@ -774,7 +774,7 @@ fail: if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: socket thread terminated\n", - __func__); + __func__); return ret; } @@ -787,19 +787,19 @@ l1oip_socket_close(struct l1oip *hc) if (hc->socket_thread) { if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: socket thread exists, " - "killing...\n", __func__); + "killing...\n", __func__); send_sig(SIGTERM, hc->socket_thread, 0); wait_for_completion(&hc->socket_complete); } /* if active, we send up a PH_DEACTIVATE and deactivate */ if (test_bit(FLG_ACTIVE, &dch->Flags)) { - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: interface become deactivated " - "due to timeout\n", __func__); + "due to timeout\n", __func__); test_and_clear_bit(FLG_ACTIVE, &dch->Flags); _queue_data(&dch->dev.D, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0, - NULL, GFP_ATOMIC); + NULL, GFP_ATOMIC); } } @@ -813,11 +813,11 @@ l1oip_socket_open(struct l1oip *hc) /* create receive process */ hc->socket_thread = kthread_run(l1oip_socket_thread, hc, "l1oip_%s", - hc->name); + hc->name); if (IS_ERR(hc->socket_thread)) { int err = PTR_ERR(hc->socket_thread); printk(KERN_ERR "%s: Failed (%d) to create socket process.\n", - __func__, err); + __func__, err); hc->socket_thread = NULL; sock_release(hc->socket); return err; @@ -834,9 +834,9 @@ l1oip_send_bh(struct work_struct *work) { struct l1oip *hc = container_of(work, struct l1oip, workq); - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: keepalive timer expired, sending empty " - "frame on dchannel\n", __func__); + "frame on dchannel\n", __func__); /* send an empty l1oip frame at D-channel */ l1oip_socket_send(hc, 0, hc->d_idx, 0, 0, NULL, 0); @@ -862,25 +862,25 @@ l1oip_timeout(void *data) if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: timeout timer expired, turn layer one " - "down.\n", __func__); + "down.\n", __func__); hc->timeout_on = 0; /* state that timer must be initialized next time */ /* if timeout, we send up a PH_DEACTIVATE and deactivate */ if (test_bit(FLG_ACTIVE, &dch->Flags)) { - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: interface become deactivated " - "due to timeout\n", __func__); + "due to timeout\n", __func__); test_and_clear_bit(FLG_ACTIVE, &dch->Flags); _queue_data(&dch->dev.D, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0, - NULL, GFP_ATOMIC); + NULL, GFP_ATOMIC); } /* if we have ondemand set, we remove ip address */ if (hc->ondemand) { if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: on demand causes ip address to " - "be removed\n", __func__); + "be removed\n", __func__); hc->sin_remote.sin_addr.s_addr = 0; } } @@ -904,12 +904,12 @@ handle_dmsg(struct mISDNchannel *ch, struct sk_buff *skb) case PH_DATA_REQ: if (skb->len < 1) { printk(KERN_WARNING "%s: skb too small\n", - __func__); + __func__); break; } if (skb->len > MAX_DFRAME_LEN_L1 || skb->len > L1OIP_MAX_LEN) { printk(KERN_WARNING "%s: skb too large\n", - __func__); + __func__); break; } /* send frame */ @@ -918,7 +918,7 @@ handle_dmsg(struct mISDNchannel *ch, struct sk_buff *skb) while (l) { ll = (l < L1OIP_MAX_PERFRAME) ? l : L1OIP_MAX_PERFRAME; l1oip_socket_send(hc, 0, dch->slot, 0, - hc->chan[dch->slot].tx_counter++, p, ll); + hc->chan[dch->slot].tx_counter++, p, ll); p += ll; l -= ll; } @@ -926,9 +926,9 @@ handle_dmsg(struct mISDNchannel *ch, struct sk_buff *skb) queue_ch_frame(ch, PH_DATA_CNF, hh->id, skb); return 0; case PH_ACTIVATE_REQ: - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: PH_ACTIVATE channel %d (1..%d)\n" - , __func__, dch->slot, hc->b_num+1); + , __func__, dch->slot, hc->b_num + 1); skb_trim(skb, 0); if (test_bit(FLG_ACTIVE, &dch->Flags)) queue_ch_frame(ch, PH_ACTIVATE_IND, hh->id, skb); @@ -936,10 +936,10 @@ handle_dmsg(struct mISDNchannel *ch, struct sk_buff *skb) queue_ch_frame(ch, PH_DEACTIVATE_IND, hh->id, skb); return 0; case PH_DEACTIVATE_REQ: - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: PH_DEACTIVATE channel %d " - "(1..%d)\n", __func__, dch->slot, - hc->b_num+1); + "(1..%d)\n", __func__, dch->slot, + hc->b_num + 1); skb_trim(skb, 0); if (test_bit(FLG_ACTIVE, &dch->Flags)) queue_ch_frame(ch, PH_ACTIVATE_IND, hh->id, skb); @@ -971,26 +971,26 @@ channel_dctrl(struct dchannel *dch, struct mISDN_ctrl_req *cq) hc->remoteport = hc->localport; if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: got new ip address from user " - "space.\n", __func__); + "space.\n", __func__); l1oip_socket_open(hc); break; case MISDN_CTRL_UNSETPEER: if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: removing ip address.\n", - __func__); + __func__); hc->remoteip = 0; l1oip_socket_open(hc); break; case MISDN_CTRL_GETPEER: if (debug & DEBUG_L1OIP_SOCKET) printk(KERN_DEBUG "%s: getting ip address.\n", - __func__); + __func__); cq->p1 = hc->remoteip; cq->p2 = hc->remoteport | (hc->localport << 16); break; default: printk(KERN_WARNING "%s: unknown Op %x\n", - __func__, cq->op); + __func__, cq->op); ret = -EINVAL; break; } @@ -1002,21 +1002,21 @@ open_dchannel(struct l1oip *hc, struct dchannel *dch, struct channel_req *rq) { if (debug & DEBUG_HW_OPEN) printk(KERN_DEBUG "%s: dev(%d) open from %p\n", __func__, - dch->dev.id, __builtin_return_address(0)); + dch->dev.id, __builtin_return_address(0)); if (rq->protocol == ISDN_P_NONE) return -EINVAL; if ((dch->dev.D.protocol != ISDN_P_NONE) && (dch->dev.D.protocol != rq->protocol)) { if (debug & DEBUG_HW_OPEN) printk(KERN_WARNING "%s: change protocol %x to %x\n", - __func__, dch->dev.D.protocol, rq->protocol); + __func__, dch->dev.D.protocol, rq->protocol); } if (dch->dev.D.protocol != rq->protocol) dch->dev.D.protocol = rq->protocol; if (test_bit(FLG_ACTIVE, &dch->Flags)) { _queue_data(&dch->dev.D, PH_ACTIVATE_IND, MISDN_ID_ANY, - 0, NULL, GFP_KERNEL); + 0, NULL, GFP_KERNEL); } rq->ch = &dch->dev.D; if (!try_module_get(THIS_MODULE)) @@ -1038,7 +1038,7 @@ open_bchannel(struct l1oip *hc, struct dchannel *dch, struct channel_req *rq) bch = hc->chan[ch].bch; if (!bch) { printk(KERN_ERR "%s:internal error ch %d has no bch\n", - __func__, ch); + __func__, ch); return -EINVAL; } if (test_and_set_bit(FLG_OPEN, &bch->Flags)) @@ -1061,7 +1061,7 @@ l1oip_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) if (dch->debug & DEBUG_HW) printk(KERN_DEBUG "%s: cmd:%x %p\n", - __func__, cmd, arg); + __func__, cmd, arg); switch (cmd) { case OPEN_CHANNEL: rq = arg; @@ -1089,8 +1089,8 @@ l1oip_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) case CLOSE_CHANNEL: if (debug & DEBUG_HW_OPEN) printk(KERN_DEBUG "%s: dev(%d) close from %p\n", - __func__, dch->dev.id, - __builtin_return_address(0)); + __func__, dch->dev.id, + __builtin_return_address(0)); module_put(THIS_MODULE); break; case CONTROL_CHANNEL: @@ -1099,7 +1099,7 @@ l1oip_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) default: if (dch->debug & DEBUG_HW) printk(KERN_DEBUG "%s: unknown command %x\n", - __func__, cmd); + __func__, cmd); err = -EINVAL; } return err; @@ -1119,12 +1119,12 @@ handle_bmsg(struct mISDNchannel *ch, struct sk_buff *skb) case PH_DATA_REQ: if (skb->len <= 0) { printk(KERN_WARNING "%s: skb too small\n", - __func__); + __func__); break; } if (skb->len > MAX_DFRAME_LEN_L1 || skb->len > L1OIP_MAX_LEN) { printk(KERN_WARNING "%s: skb too large\n", - __func__); + __func__); break; } /* check for AIS / ulaw-silence */ @@ -1132,7 +1132,7 @@ handle_bmsg(struct mISDNchannel *ch, struct sk_buff *skb) if (!memchr_inv(skb->data, 0xff, l)) { if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: got AIS, not sending, " - "but counting\n", __func__); + "but counting\n", __func__); hc->chan[bch->slot].tx_counter += l; skb_trim(skb, 0); queue_ch_frame(ch, PH_DATA_CNF, hh->id, skb); @@ -1143,7 +1143,7 @@ handle_bmsg(struct mISDNchannel *ch, struct sk_buff *skb) if (!memchr_inv(skb->data, 0x2a, l)) { if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: got silence, not sending" - ", but counting\n", __func__); + ", but counting\n", __func__); hc->chan[bch->slot].tx_counter += l; skb_trim(skb, 0); queue_ch_frame(ch, PH_DATA_CNF, hh->id, skb); @@ -1156,7 +1156,7 @@ handle_bmsg(struct mISDNchannel *ch, struct sk_buff *skb) while (l) { ll = (l < L1OIP_MAX_PERFRAME) ? l : L1OIP_MAX_PERFRAME; l1oip_socket_send(hc, hc->codec, bch->slot, 0, - hc->chan[bch->slot].tx_counter, p, ll); + hc->chan[bch->slot].tx_counter, p, ll); hc->chan[bch->slot].tx_counter += ll; p += ll; l -= ll; @@ -1165,19 +1165,19 @@ handle_bmsg(struct mISDNchannel *ch, struct sk_buff *skb) queue_ch_frame(ch, PH_DATA_CNF, hh->id, skb); return 0; case PH_ACTIVATE_REQ: - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: PH_ACTIVATE channel %d (1..%d)\n" - , __func__, bch->slot, hc->b_num+1); + , __func__, bch->slot, hc->b_num + 1); hc->chan[bch->slot].codecstate = 0; test_and_set_bit(FLG_ACTIVE, &bch->Flags); skb_trim(skb, 0); queue_ch_frame(ch, PH_ACTIVATE_IND, hh->id, skb); return 0; case PH_DEACTIVATE_REQ: - if (debug & (DEBUG_L1OIP_MSG|DEBUG_L1OIP_SOCKET)) + if (debug & (DEBUG_L1OIP_MSG | DEBUG_L1OIP_SOCKET)) printk(KERN_DEBUG "%s: PH_DEACTIVATE channel %d " - "(1..%d)\n", __func__, bch->slot, - hc->b_num+1); + "(1..%d)\n", __func__, bch->slot, + hc->b_num + 1); test_and_clear_bit(FLG_ACTIVE, &bch->Flags); skb_trim(skb, 0); queue_ch_frame(ch, PH_DEACTIVATE_IND, hh->id, skb); @@ -1202,14 +1202,14 @@ channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) case MISDN_CTRL_HW_FEATURES: /* fill features structure */ if (debug & DEBUG_L1OIP_MSG) printk(KERN_DEBUG "%s: HW_FEATURE request\n", - __func__); + __func__); /* create confirm */ features->unclocked = 1; features->unordered = 1; break; default: printk(KERN_WARNING "%s: unknown Op %x\n", - __func__, cq->op); + __func__, cq->op); ret = -EINVAL; break; } @@ -1224,7 +1224,7 @@ l1oip_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg) if (bch->debug & DEBUG_HW) printk(KERN_DEBUG "%s: cmd:%x %p\n", - __func__, cmd, arg); + __func__, cmd, arg); switch (cmd) { case CLOSE_CHANNEL: test_and_clear_bit(FLG_OPEN, &bch->Flags); @@ -1239,7 +1239,7 @@ l1oip_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg) break; default: printk(KERN_WARNING "%s: unknown prim(%x)\n", - __func__, cmd); + __func__, cmd); } return err; } @@ -1330,18 +1330,18 @@ init_card(struct l1oip *hc, int pri, int bundle) break; default: printk(KERN_ERR "Codec(%d) not supported.\n", - codec[l1oip_cnt]); + codec[l1oip_cnt]); return -EINVAL; } hc->codec = codec[l1oip_cnt]; if (debug & DEBUG_L1OIP_INIT) printk(KERN_DEBUG "%s: using codec %d\n", - __func__, hc->codec); + __func__, hc->codec); if (id[l1oip_cnt] == 0) { printk(KERN_WARNING "Warning: No 'id' value given or " - "0, this is highly unsecure. Please use 32 " - "bit randmom number 0x...\n"); + "0, this is highly unsecure. Please use 32 " + "bit randmom number 0x...\n"); } hc->id = id[l1oip_cnt]; if (debug & DEBUG_L1OIP_INIT) @@ -1350,7 +1350,7 @@ init_card(struct l1oip *hc, int pri, int bundle) hc->ondemand = ondemand[l1oip_cnt]; if (hc->ondemand && !hc->id) { printk(KERN_ERR "%s: ondemand option only allowed in " - "conjunction with non 0 ID\n", __func__); + "conjunction with non 0 ID\n", __func__); return -EINVAL; } @@ -1358,37 +1358,37 @@ init_card(struct l1oip *hc, int pri, int bundle) hc->b_num = limit[l1oip_cnt]; if (!pri && hc->b_num > 2) { printk(KERN_ERR "Maximum limit for BRI interface is 2 " - "channels.\n"); + "channels.\n"); return -EINVAL; } if (pri && hc->b_num > 126) { printk(KERN_ERR "Maximum limit for PRI interface is 126 " - "channels.\n"); + "channels.\n"); return -EINVAL; } if (pri && hc->b_num > 30) { printk(KERN_WARNING "Maximum limit for BRI interface is 30 " - "channels.\n"); + "channels.\n"); printk(KERN_WARNING "Your selection of %d channels must be " - "supported by application.\n", hc->limit); + "supported by application.\n", hc->limit); } - hc->remoteip = ip[l1oip_cnt<<2] << 24 - | ip[(l1oip_cnt<<2)+1] << 16 - | ip[(l1oip_cnt<<2)+2] << 8 - | ip[(l1oip_cnt<<2)+3]; - hc->localport = port[l1oip_cnt]?:(L1OIP_DEFAULTPORT+l1oip_cnt); + hc->remoteip = ip[l1oip_cnt << 2] << 24 + | ip[(l1oip_cnt << 2) + 1] << 16 + | ip[(l1oip_cnt << 2) + 2] << 8 + | ip[(l1oip_cnt << 2) + 3]; + hc->localport = port[l1oip_cnt]?:(L1OIP_DEFAULTPORT + l1oip_cnt); if (remoteport[l1oip_cnt]) hc->remoteport = remoteport[l1oip_cnt]; else hc->remoteport = hc->localport; if (debug & DEBUG_L1OIP_INIT) printk(KERN_DEBUG "%s: using local port %d remote ip " - "%d.%d.%d.%d port %d ondemand %d\n", __func__, - hc->localport, hc->remoteip >> 24, - (hc->remoteip >> 16) & 0xff, - (hc->remoteip >> 8) & 0xff, hc->remoteip & 0xff, - hc->remoteport, hc->ondemand); + "%d.%d.%d.%d port %d ondemand %d\n", __func__, + hc->localport, hc->remoteip >> 24, + (hc->remoteip >> 16) & 0xff, + (hc->remoteip >> 8) & 0xff, hc->remoteip & 0xff, + hc->remoteport, hc->ondemand); dch = kzalloc(sizeof(struct dchannel), GFP_KERNEL); if (!dch) @@ -1401,7 +1401,7 @@ init_card(struct l1oip *hc, int pri, int bundle) else dch->dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0); dch->dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | - (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); + (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); dch->dev.D.send = handle_dmsg; dch->dev.D.ctrl = l1oip_dctrl; dch->dev.nrbchan = hc->b_num; @@ -1414,7 +1414,7 @@ init_card(struct l1oip *hc, int pri, int bundle) bch = kzalloc(sizeof(struct bchannel), GFP_KERNEL); if (!bch) { printk(KERN_ERR "%s: no memory for bchannel\n", - __func__); + __func__); return -ENOMEM; } bch->nr = i + ch; @@ -1437,7 +1437,7 @@ init_card(struct l1oip *hc, int pri, int bundle) if (debug & DEBUG_L1OIP_INIT) printk(KERN_DEBUG "%s: Setting up network card(%d)\n", - __func__, l1oip_cnt + 1); + __func__, l1oip_cnt + 1); ret = l1oip_socket_open(hc); if (ret) return ret; @@ -1445,7 +1445,7 @@ init_card(struct l1oip *hc, int pri, int bundle) hc->keep_tl.function = (void *)l1oip_keepalive; hc->keep_tl.data = (ulong)hc; init_timer(&hc->keep_tl); - hc->keep_tl.expires = jiffies + 2*HZ; /* two seconds first time */ + hc->keep_tl.expires = jiffies + 2 * HZ; /* two seconds first time */ add_timer(&hc->keep_tl); hc->timeout_tl.function = (void *)l1oip_timeout; @@ -1464,7 +1464,7 @@ l1oip_init(void) int ret; printk(KERN_INFO "mISDN: Layer-1-over-IP driver Rev. %s\n", - l1oip_revision); + l1oip_revision); INIT_LIST_HEAD(&l1oip_ilist); spin_lock_init(&l1oip_lock); @@ -1493,16 +1493,16 @@ l1oip_init(void) break; default: printk(KERN_ERR "Card type(%d) not supported.\n", - type[l1oip_cnt] & 0xff); + type[l1oip_cnt] & 0xff); l1oip_cleanup(); return -EINVAL; } if (debug & DEBUG_L1OIP_INIT) printk(KERN_DEBUG "%s: interface %d is %s with %s.\n", - __func__, l1oip_cnt, pri ? "PRI" : "BRI", - bundle ? "bundled IP packet for all B-channels" : - "separate IP packets for every B-channel"); + __func__, l1oip_cnt, pri ? "PRI" : "BRI", + bundle ? "bundled IP packet for all B-channels" : + "separate IP packets for every B-channel"); hc = kzalloc(sizeof(struct l1oip), GFP_ATOMIC); if (!hc) { @@ -1530,4 +1530,3 @@ l1oip_init(void) module_init(l1oip_init); module_exit(l1oip_cleanup); - |