-/*
+/*
* dvb_net.c
*
* Copyright (C) 2001 Convergence integrated media GmbH
* Copyright (C) 2003, 2004 gcs - Global Communication & Services GmbH.
* and Department of Scientific Computing
* Paris Lodron University of Salzburg.
- * Hilmar Linder <hlinder@cosy.sbg.ac.at>
- * and Wolfram Stering <wstering@cosy.sbg.ac.at>
+ * Hilmar Linder <hlinder@cosy.sbg.ac.at>
+ * and Wolfram Stering <wstering@cosy.sbg.ac.at>
*
* ULE Decaps according to draft-ietf-ipdvb-ule-03.txt.
*
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
struct dvb_net_priv {
int in_use;
- struct net_device_stats stats;
+ struct net_device_stats stats;
u16 pid;
struct dvb_net *host;
- struct dmx_demux *demux;
+ struct dmx_demux *demux;
struct dmx_section_feed *secfeed;
struct dmx_section_filter *secfilter;
struct dmx_ts_feed *tsfeed;
/**
- * Determine the packet's protocol ID. The rule here is that we
+ * Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
{
struct ethhdr *eth;
unsigned char *rawp;
-
+
skb->mac.raw=skb->data;
skb_pull(skb,dev->hard_header_len);
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,8)
#else
eth = eth_hdr(skb);
#endif
-
+
if (*eth->h_dest & 1) {
if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0)
skb->pkt_type=PACKET_BROADCAST;
else
skb->pkt_type=PACKET_MULTICAST;
}
-
+
if (ntohs(eth->h_proto) >= 1536)
return eth->h_proto;
-
+
rawp = skb->data;
-
+
/**
* This is a magic hack to spot IPX packets. Older Novell breaks
* the protocol design and runs IPX over 802.3 without an 802.2 LLC
*/
if (*(unsigned short *)rawp == 0xFFFF)
return htons(ETH_P_802_3);
-
+
/**
* Real 802.2 LLC
*/
#define ULE_TEST 0
#define ULE_BRIDGED 1
-int ule_test_sndu( struct dvb_net_priv *p )
+static int ule_test_sndu( struct dvb_net_priv *p )
{
return -1;
}
-int ule_bridged_sndu( struct dvb_net_priv *p )
+static int ule_bridged_sndu( struct dvb_net_priv *p )
{
/* BRIDGE SNDU handling sucks in draft-ietf-ipdvb-ule-03.txt.
* This has to be the last extension header, otherwise it won't work.
/** Handle ULE extension headers.
* Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding.
* Returns: >= 0: nr. of bytes consumed by next extension header
- * -1: Mandatory extension header that is not recognized or TEST SNDU; discard.
+ * -1: Mandatory extension header that is not recognized or TEST SNDU; discard.
*/
static int handle_one_ule_extension( struct dvb_net_priv *p )
{
*/
static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len )
{
- struct dvb_net_priv *priv = (struct dvb_net_priv *)dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
unsigned long skipped = 0L;
u8 *ts, *ts_end, *from_where = NULL, ts_remain = 0, how_much = 0, new_ts = 1;
struct ethhdr *ethh = NULL;
if (ule_dump) {
hexdump( ule_where, TS_SZ );
ule_dump = 0;
- }
+ }
ule_where += TS_SZ;
#endif
ule_crc = iov_crc32(ule_crc, iov, 3);
expected_crc = *((u8 *)priv->ule_skb->tail - 4) << 24 |
- *((u8 *)priv->ule_skb->tail - 3) << 16 |
- *((u8 *)priv->ule_skb->tail - 2) << 8 |
- *((u8 *)priv->ule_skb->tail - 1);
+ *((u8 *)priv->ule_skb->tail - 3) << 16 |
+ *((u8 *)priv->ule_skb->tail - 2) << 8 |
+ *((u8 *)priv->ule_skb->tail - 1);
if (ule_crc != expected_crc) {
printk(KERN_WARNING "%lu: CRC32 check FAILED: %#lx / %#lx, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n",
priv->ts_count, ule_crc, expected_crc, priv->ule_sndu_len, priv->ule_sndu_type, ts_remain, ts_remain > 2 ? *(unsigned short *)from_where : 0);
const u8 *buffer2, size_t buffer2_len,
struct dmx_ts_feed *feed, enum dmx_success success)
{
- struct net_device *dev = (struct net_device *)feed->priv;
+ struct net_device *dev = feed->priv;
if (buffer2 != 0)
printk(KERN_WARNING "buffer2 not 0: %p.\n", buffer2);
u8 *eth;
struct sk_buff *skb;
struct net_device_stats *stats = &(((struct dvb_net_priv *) dev->priv)->stats);
+ int snap = 0;
/* note: pkt_len includes a 32bit checksum */
if (pkt_len < 16) {
return;
}
if (pkt[5] & 0x02) {
- //FIXME: handle LLC/SNAP
- stats->rx_dropped++;
- return;
+ /* handle LLC/SNAP, see rfc-1042 */
+ if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) {
+ stats->rx_dropped++;
+ return;
+ }
+ snap = 8;
}
if (pkt[7]) {
/* FIXME: assemble datagram from multiple sections */
}
/* we have 14 byte ethernet header (ip header follows);
- * 12 byte MPE header; 4 byte checksum; + 2 byte alignment
+ * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP
*/
- if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2))) {
+ if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) {
//printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
stats->rx_dropped++;
return;
skb->dev = dev;
/* copy L3 payload */
- eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14);
- memcpy(eth + 14, pkt + 12, pkt_len - 12 - 4);
+ eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap);
+ memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap);
/* create ethernet header: */
eth[0]=pkt[0x0b];
eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0;
- eth[12] = 0x08; /* ETH_P_IP */
- eth[13] = 0x00;
+ if (snap) {
+ eth[12] = pkt[18];
+ eth[13] = pkt[19];
+ } else {
+ /* protocol numbers are from rfc-1700 or
+ * http://www.iana.org/assignments/ethernet-numbers
+ */
+ if (pkt[12] >> 4 == 6) { /* version field from IP header */
+ eth[12] = 0x86; /* IPv6 */
+ eth[13] = 0xdd;
+ } else {
+ eth[12] = 0x08; /* IPv4 */
+ eth[13] = 0x00;
+ }
+ }
skb->protocol = dvb_net_eth_type_trans(skb, dev);
-
+
stats->rx_packets++;
stats->rx_bytes+=skb->len;
netif_rx(skb);
}
-
+
static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len,
const u8 *buffer2, size_t buffer2_len,
struct dmx_section_filter *filter,
enum dmx_success success)
{
- struct net_device *dev=(struct net_device *) filter->priv;
+ struct net_device *dev = filter->priv;
/**
* we rely on the DVB API definition where exactly one complete
struct dmx_section_filter **secfilter,
u8 *mac, u8 *mac_mask)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
int ret;
*secfilter=NULL;
static int dvb_net_feed_start(struct net_device *dev)
{
int ret, i;
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
struct dmx_demux *demux = priv->demux;
unsigned char *mac = (unsigned char *) dev->dev_addr;
-
+
dprintk("%s: rx_mode %i\n", __FUNCTION__, priv->rx_mode);
if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0])
printk("%s: BUG %d\n", __FUNCTION__, __LINE__);
priv->tsfeed = NULL;
if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) {
- dprintk("%s: alloc secfeed\n", __FUNCTION__);
- ret=demux->allocate_section_feed(demux, &priv->secfeed,
+ dprintk("%s: alloc secfeed\n", __FUNCTION__);
+ ret=demux->allocate_section_feed(demux, &priv->secfeed,
dvb_net_sec_callback);
- if (ret<0) {
- printk("%s: could not allocate section feed\n", dev->name);
- return ret;
- }
+ if (ret<0) {
+ printk("%s: could not allocate section feed\n", dev->name);
+ return ret;
+ }
- ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 0, 1);
+ ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 0, 1);
- if (ret<0) {
- printk("%s: could not set section feed\n", dev->name);
- priv->demux->release_section_feed(priv->demux, priv->secfeed);
- priv->secfeed=NULL;
- return ret;
- }
+ if (ret<0) {
+ printk("%s: could not set section feed\n", dev->name);
+ priv->demux->release_section_feed(priv->demux, priv->secfeed);
+ priv->secfeed=NULL;
+ return ret;
+ }
- if (priv->rx_mode != RX_MODE_PROMISC) {
- dprintk("%s: set secfilter\n", __FUNCTION__);
+ if (priv->rx_mode != RX_MODE_PROMISC) {
+ dprintk("%s: set secfilter\n", __FUNCTION__);
dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal);
- }
+ }
- switch (priv->rx_mode) {
- case RX_MODE_MULTI:
- for (i = 0; i < priv->multi_num; i++) {
- dprintk("%s: set multi_secfilter[%d]\n", __FUNCTION__, i);
+ switch (priv->rx_mode) {
+ case RX_MODE_MULTI:
+ for (i = 0; i < priv->multi_num; i++) {
+ dprintk("%s: set multi_secfilter[%d]\n", __FUNCTION__, i);
dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i],
- priv->multi_macs[i], mask_normal);
- }
- break;
- case RX_MODE_ALL_MULTI:
- priv->multi_num=1;
- dprintk("%s: set multi_secfilter[0]\n", __FUNCTION__);
+ priv->multi_macs[i], mask_normal);
+ }
+ break;
+ case RX_MODE_ALL_MULTI:
+ priv->multi_num=1;
+ dprintk("%s: set multi_secfilter[0]\n", __FUNCTION__);
dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0],
- mac_allmulti, mask_allmulti);
- break;
- case RX_MODE_PROMISC:
- priv->multi_num=0;
- dprintk("%s: set secfilter\n", __FUNCTION__);
+ mac_allmulti, mask_allmulti);
+ break;
+ case RX_MODE_PROMISC:
+ priv->multi_num=0;
+ dprintk("%s: set secfilter\n", __FUNCTION__);
dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc);
- break;
- }
-
- dprintk("%s: start filtering\n", __FUNCTION__);
- priv->secfeed->start_filtering(priv->secfeed);
+ break;
+ }
+
+ dprintk("%s: start filtering\n", __FUNCTION__);
+ priv->secfeed->start_filtering(priv->secfeed);
} else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) {
struct timespec timeout = { 0, 30000000 }; // 30 msec
static int dvb_net_feed_stop(struct net_device *dev)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
int i;
dprintk("%s\n", __FUNCTION__);
if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) {
- if (priv->secfeed) {
- if (priv->secfeed->is_filtering) {
- dprintk("%s: stop secfeed\n", __FUNCTION__);
- priv->secfeed->stop_filtering(priv->secfeed);
- }
+ if (priv->secfeed) {
+ if (priv->secfeed->is_filtering) {
+ dprintk("%s: stop secfeed\n", __FUNCTION__);
+ priv->secfeed->stop_filtering(priv->secfeed);
+ }
- if (priv->secfilter) {
- dprintk("%s: release secfilter\n", __FUNCTION__);
- priv->secfeed->release_filter(priv->secfeed,
- priv->secfilter);
- priv->secfilter=NULL;
- }
+ if (priv->secfilter) {
+ dprintk("%s: release secfilter\n", __FUNCTION__);
+ priv->secfeed->release_filter(priv->secfeed,
+ priv->secfilter);
+ priv->secfilter=NULL;
+ }
- for (i=0; i<priv->multi_num; i++) {
- if (priv->multi_secfilter[i]) {
+
for (i=0; i<priv->multi_num; i++) {
+ if (priv->multi_secfilter[i]) {
dprintk("%s: release multi_filter[%d]\n",
__FUNCTION__, i);
- priv->secfeed->release_filter(priv->secfeed,
- priv->multi_secfilter[i]);
- priv->multi_secfilter[i]=NULL;
- }
- }
+ priv->secfeed->release_filter(priv->secfeed,
+ priv->multi_secfilter[i]);
+ priv->multi_secfilter[i] = NULL;
+ }
+ }
- priv->demux->release_section_feed(priv->demux, priv->secfeed);
- priv->secfeed=NULL;
- } else
- printk("%s: no feed to stop\n", dev->name);
+ priv->demux->release_section_feed(priv->demux, priv->secfeed);
+ priv->secfeed = NULL;
+ } else
+ printk("%s: no feed to stop\n", dev->name);
} else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) {
if (priv->tsfeed) {
if (priv->tsfeed->is_filtering) {
static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
if (priv->multi_num == DVB_NET_MULTICAST_MAX)
return -ENOMEM;
static void wq_set_multicast_list (void *data)
{
struct net_device *dev = data;
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
dvb_net_feed_stop(dev);
priv->rx_mode = RX_MODE_UNI;
-
- if(dev->flags & IFF_PROMISC) {
+
+ if (dev->flags & IFF_PROMISC) {
dprintk("%s: promiscuous mode\n", dev->name);
priv->rx_mode = RX_MODE_PROMISC;
} else if ((dev->flags & IFF_ALLMULTI)) {
priv->rx_mode = RX_MODE_MULTI;
priv->multi_num = 0;
- for (mci = 0, mc=dev->mc_list;
+ for (mci = 0, mc=dev->mc_list;
mci < dev->mc_count;
mc = mc->next, mci++) {
dvb_set_mc_filter(dev, mc);
}
}
- dvb_net_feed_start(dev);
- }
+ dvb_net_feed_start(dev);
+}
static void dvb_net_set_multicast_list (struct net_device *dev)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
schedule_work(&priv->set_multicast_list_wq);
}
static int dvb_net_set_mac (struct net_device *dev, void *p)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
struct sockaddr *addr=p;
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
static int dvb_net_open(struct net_device *dev)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
priv->in_use++;
dvb_net_feed_start(dev);
static int dvb_net_stop(struct net_device *dev)
{
- struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv;
+ struct dvb_net_priv *priv = dev->priv;
priv->in_use--;
return dvb_net_feed_stop(dev);
return &((struct dvb_net_priv*) dev->priv)->stats;
}
-
static void dvb_net_setup(struct net_device *dev)
{
ether_setup(dev);
dev->mtu = 4096;
dev->mc_count = 0;
dev->hard_header_cache = NULL;
-
dev->flags |= IFF_NOARP;
}
static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype)
{
- struct net_device *net;
+ struct net_device *net;
struct dvb_net_priv *priv;
int result;
int if_num;
-
+
if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE)
return -EINVAL;
if ((if_num = get_if(dvbnet)) < 0)
net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup);
if (!net)
return -ENOMEM;
-
+
if (dvbnet->dvbdev->id)
snprintf(net->name, IFNAMSIZ, "dvb%d%u%d",
dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num);
snprintf(net->name, IFNAMSIZ, "dvb%d_%d",
dvbnet->dvbdev->adapter->num, if_num);
- net->addr_len = 6;
+ net->addr_len = 6;
memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6);
dvbnet->device[if_num] = net;
-
+
priv = net->priv;
- priv->demux = dvbnet->demux;
- priv->pid = pid;
+ priv->demux = dvbnet->demux;
+ priv->pid = pid;
priv->rx_mode = RX_MODE_UNI;
priv->need_pusi = 1;
priv->tscc = 0;
INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list, net);
INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed, net);
- net->base_addr = pid;
-
+ net->base_addr = pid;
+
if ((result = register_netdev(net)) < 0) {
dvbnet->device[if_num] = NULL;
free_netdev(net);
}
printk("dvb_net: created network interface %s\n", net->name);
- return if_num;
+ return if_num;
}
-
static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned int num)
{
struct net_device *net = dvbnet->device[num];
dvb_net_stop(net);
flush_scheduled_work();
printk("dvb_net: removed network interface %s\n", net->name);
- unregister_netdev(net);
+ unregister_netdev(net);
dvbnet->state[num]=0;
dvbnet->device[num] = NULL;
free_netdev(net);
return 0;
}
-
static int dvb_net_do_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *parg)
{
- struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
- struct dvb_net *dvbnet = (struct dvb_net *) dvbdev->priv;
+ struct dvb_device *dvbdev = file->private_data;
+ struct dvb_net *dvbnet = dvbdev->priv;
if (((file->f_flags&O_ACCMODE)==O_RDONLY))
return -EPERM;
-
+
switch (cmd) {
case NET_ADD_IF:
{
- struct dvb_net_if *dvbnetif=(struct dvb_net_if *)parg;
+ struct dvb_net_if *dvbnetif = parg;
int result;
-
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
{
struct net_device *netdev;
struct dvb_net_priv *priv_data;
- struct dvb_net_if *dvbnetif=(struct dvb_net_if *)parg;
+ struct dvb_net_if *dvbnetif = parg;
if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX ||
!dvbnet->state[dvbnetif->if_num])
return -EINVAL;
netdev = dvbnet->device[dvbnetif->if_num];
- priv_data=(struct dvb_net_priv*)netdev->priv;
+
+ priv_data = netdev->priv;
dvbnetif->pid=priv_data->pid;
dvbnetif->feedtype=priv_data->feedtype;
break;
/* binary compatiblity cruft */
case __NET_ADD_IF_OLD:
{
- struct __dvb_net_if_old *dvbnetif=(struct __dvb_net_if_old *)parg;
+ struct __dvb_net_if_old *dvbnetif = parg;
int result;
if (!capable(CAP_SYS_ADMIN))
{
struct net_device *netdev;
struct dvb_net_priv *priv_data;
- struct __dvb_net_if_old *dvbnetif=(struct __dvb_net_if_old *)parg;
+ struct __dvb_net_if_old *dvbnetif = parg;
if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX ||
!dvbnet->state[dvbnetif->if_num])
- return -EINVAL;
+ return -EINVAL;
netdev = dvbnet->device[dvbnetif->if_num];
- priv_data=(struct dvb_net_priv*)netdev->priv;
+
+ priv_data = netdev->priv;
dvbnetif->pid=priv_data->pid;
break;
}
struct dmx_demux *dmx)
{
int i;
-
+
dvbnet->demux = dmx;
for (i=0; i<DVB_NET_DEVICES_MAX; i++)
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