/* 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)
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.
*/
#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];
*/
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__);
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 */
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);
}
/* 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);
*/
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;
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);
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 */
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;
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++;
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;
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;
}
}
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--;
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;
}
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;
}
/* 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 */
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;
}
/* 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;
}
/* 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,
} else {
if (debug & DEBUG_L1OIP_SOCKET)
printk(KERN_WARNING
- "%s: broken pipe on socket\n", __func__);
+ "%s: broken pipe on socket\n", __func__);
}
}
/* 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;
if (debug & DEBUG_L1OIP_SOCKET)
printk(KERN_DEBUG "%s: socket thread terminating\n",
- __func__);
+ __func__);
fail:
/* free recvbuf */
if (debug & DEBUG_L1OIP_SOCKET)
printk(KERN_DEBUG "%s: socket thread terminated\n",
- __func__);
+ __func__);
return ret;
}
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);
}
}
/* 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;
{
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);
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;
}
}
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 */
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;
}
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);
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);
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;
}
{
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))
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))
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;
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:
default:
if (dch->debug & DEBUG_HW)
printk(KERN_DEBUG "%s: unknown command %x\n",
- __func__, cmd);
+ __func__, cmd);
err = -EINVAL;
}
return err;
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 */
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);
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);
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;
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);
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;
}
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);
break;
default:
printk(KERN_WARNING "%s: unknown prim(%x)\n",
- __func__, cmd);
+ __func__, cmd);
}
return err;
}
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)
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;
}
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)
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;
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;
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;
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;
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);
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) {
module_init(l1oip_init);
module_exit(l1oip_cleanup);
-
projects / firefly-linux-kernel-4.4.55.git / blobdiff