/* * dvb_net.c * * Copyright (C) 2001 Convergence integrated media GmbH * Ralph Metzler * Copyright (C) 2002 Ralph Metzler * * ULE Decapsulation code: * Copyright (C) 2003 gcs - Global Communication & Services GmbH. * and Institute for Computer Sciences * Salzburg University. * Hilmar Linder * and Wolfram Stering * * ULE Decaps according to draft-fair-ipdvb-ule-01.txt. * * This program is free software; you can redistribute it and/or * 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. * Or, point your browser to http://www.gnu.org/copyleft/gpl.html */ #include #include #include #include #include #include #include #include "dvb_demux.h" #include "dvb_net.h" #include "dvb_functions.h" static inline __u32 iov_crc32( __u32 c, struct iovec *iov, unsigned int cnt ) { unsigned int j; for (j = 0; j < cnt; j++) c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); return c; } #if 1 #define dprintk(x...) printk(x) #else #define dprintk(x...) #endif #define DVB_NET_MULTICAST_MAX 10 #define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) static void hexdump( const unsigned char *buf, unsigned short len ) { char str[80], octet[10]; int ofs, i, l; for (ofs = 0; ofs < len; ofs += 16) { sprintf( str, "%03d: ", ofs ); for (i = 0; i < 16; i++) { if ((i + ofs) < len) sprintf( octet, "%02x ", buf[ofs + i] ); else strcpy( octet, " " ); strcat( str, octet ); } strcat( str, " " ); l = strlen( str ); for (i = 0; (i < 16) && ((i + ofs) < len); i++) str[l++] = isprint( buf[ofs + i] ) ? buf[ofs + i] : '.'; str[l] = '\0'; printk( KERN_WARNING "%s\n", str ); } } struct dvb_net_priv { int in_use; struct net_device_stats stats; char name[6]; u16 pid; struct dvb_net *host; struct dmx_demux *demux; struct dmx_section_feed *secfeed; struct dmx_section_filter *secfilter; struct dmx_ts_feed *tsfeed; int multi_num; struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; int rx_mode; #define RX_MODE_UNI 0 #define RX_MODE_MULTI 1 #define RX_MODE_ALL_MULTI 2 #define RX_MODE_PROMISC 3 struct work_struct set_multicast_list_wq; struct work_struct restart_net_feed_wq; unsigned char feedtype; int need_pusi; unsigned char tscc; /* TS continuity counter after sync. */ struct sk_buff *ule_skb; unsigned short ule_sndu_len; unsigned short ule_sndu_type; unsigned char ule_sndu_type_1; unsigned char ule_dbit; /* whether the DestMAC address present * bit is set or not. */ unsigned char ule_ethhdr_complete; /* whether we have completed the Ethernet * header for the current ULE SNDU. */ int ule_sndu_remain; }; /** * 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. * * stolen from eth.c out of the linux kernel, hacked for dvb-device * by Michael Holzt */ static unsigned short dvb_net_eth_type_trans(struct sk_buff *skb, struct net_device *dev) { struct ethhdr *eth; unsigned char *rawp; skb->mac.raw=skb->data; skb_pull(skb,dev->hard_header_len); eth= skb->mac.ethernet; 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 * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This * won't work for fault tolerant netware but does for the rest. */ if (*(unsigned short *)rawp == 0xFFFF) return htons(ETH_P_802_3); /** * Real 802.2 LLC */ return htons(ETH_P_802_2); } #define TS_SZ 188 #define TS_SYNC 0x47 #define TS_TEI 0x80 #define TS_PUSI 0x40 #define TS_AF_A 0x20 #define TS_AF_D 0x10 #define ULE_TEST 0 #define ULE_BRIDGED 1 #define ULE_LLC 2 static inline void reset_ule( struct dvb_net_priv *p ) { p->ule_skb = NULL; p->ule_sndu_len = 0; p->ule_sndu_type = 0; p->ule_sndu_type_1 = 0; p->ule_sndu_remain = 0; p->ule_dbit = 0xFF; p->ule_ethhdr_complete = 0; } static const char eth_dest_addr[] = { 0x0b, 0x0a, 0x09, 0x08, 0x04, 0x03 }; 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; unsigned long skipped = 0L, skblen = 0L; u8 *ts, *ts_end, *from_where = NULL, ts_remain = 0, how_much = 0, new_ts = 1; struct ethhdr *ethh = NULL; unsigned int emergency_count = 0; if (dev == NULL) { printk( KERN_ERR "NO netdev struct!\n" ); return; } for (ts = (char *)buf, ts_end = (char *)buf + buf_len; ts < ts_end; ) { if (emergency_count++ > 200) { /* Huh?? */ hexdump(ts, TS_SZ); printk(KERN_WARNING "*** LOOP ALERT! ts %p ts_remain %u " "how_much %u, ule_skb %p, ule_len %u, ule_remain %u\n", ts, ts_remain, how_much, priv->ule_skb, priv->ule_sndu_len, priv->ule_sndu_remain); break; } if (new_ts) { if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI)) { printk(KERN_WARNING "Invalid TS cell: SYNC %#x, TEI %u.\n", ts[0], ts[1] & TS_TEI >> 7); continue; } ts_remain = 184; from_where = ts + 4; } /* Synchronize on PUSI, if required. */ if (priv->need_pusi) { if (ts[1] & TS_PUSI) { /* Find beginning of first ULE SNDU in current TS cell. * priv->need_pusi = 0; */ priv->tscc = ts[3] & 0x0F; /* There is a pointer field here. */ if (ts[4] > ts_remain) { printk(KERN_ERR "Invalid ULE packet " "(pointer field %d)\n", ts[4]); continue; } from_where = &ts[5] + ts[4]; ts_remain -= 1 + ts[4]; skipped = 0; } else { skipped++; continue; } } /* Check continuity counter. */ if (new_ts) { if ((ts[3] & 0x0F) == priv->tscc) priv->tscc = (priv->tscc + 1) & 0x0F; else { /* TS discontinuity handling: */ if (priv->ule_skb) { dev_kfree_skb( priv->ule_skb ); /* Prepare for next SNDU. */ reset_ule(priv); ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; ((struct dvb_net_priv *) dev->priv)->stats.rx_frame_errors++; } /* skip to next PUSI. */ printk(KERN_WARNING "TS discontinuity: got %#x, " "exptected %#x.\n", ts[3] & 0x0F, priv->tscc); priv->need_pusi = 1; continue; } /* If we still have an incomplete payload, but PUSI is * set, some TS cells are missing. * This is only possible here, if we missed exactly 16 TS * cells (continuity counter). */ if (ts[1] & TS_PUSI) { if (! priv->need_pusi) { /* printk(KERN_WARNING "Skipping pointer field %u.\n", *from_where); */ if (*from_where > 181) { printk(KERN_WARNING "*** Invalid pointer " "field: %u. Current TS cell " "follows:\n", *from_where); hexdump( ts, TS_SZ ); printk(KERN_WARNING "-------------------\n"); } /* Skip pointer field (we're processing a * packed payload). */ from_where += 1; ts_remain -= 1; } else priv->need_pusi = 0; if (priv->ule_sndu_remain > 183) { ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; ((struct dvb_net_priv *) dev->priv)->stats.rx_length_errors++; printk(KERN_WARNING "Expected %d more SNDU bytes, but " "got PUSI. Flushing incomplete payload.\n", priv->ule_sndu_remain); dev_kfree_skb(priv->ule_skb); /* Prepare for next SNDU. */ reset_ule(priv); } } } /* Check if new payload needs to be started. */ if (priv->ule_skb == NULL) { /* Start a new payload w/ skb. * Find ULE header. It is only guaranteed that the * length field (2 bytes) is contained in the current * TS. * Check ts_remain has to be >= 2 here. */ if (ts_remain < 2) { printk(KERN_WARNING "Invalid payload packing: only %d " "bytes left in TS. Resyncing.\n", ts_remain); priv->ule_sndu_len = 0; priv->need_pusi = 1; continue; } if (! priv->ule_sndu_len) { priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; if (priv->ule_sndu_len & 0x8000) { /* D-Bit is set: no dest mac present. */ priv->ule_sndu_len &= 0x7FFF; priv->ule_dbit = 1; } else priv->ule_dbit = 0; /* printk(KERN_WARNING "ULE D-Bit: %d, SNDU len %u.\n", priv->ule_dbit, priv->ule_sndu_len); */ if (priv->ule_sndu_len > 32763) { printk(KERN_WARNING "Invalid ULE SNDU length %u. " "Resyncing.\n", priv->ule_sndu_len); hexdump(ts, TS_SZ); priv->ule_sndu_len = 0; priv->need_pusi = 1; new_ts = 1; ts += TS_SZ; continue; } ts_remain -= 2; /* consume the 2 bytes SNDU length. */ from_where += 2; } /* * State of current TS: * ts_remain (remaining bytes in the current TS cell) * 0 ule_type is not available now, we need the next TS cell * 1 the first byte of the ule_type is present * >=2 full ULE header present, maybe some payload data as well. */ switch (ts_remain) { case 1: priv->ule_sndu_type = from_where[0] << 8; priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ /* ts_remain -= 1; from_where += 1; * here not necessary, because we continue. */ case 0: new_ts = 1; ts += TS_SZ; continue; default: /* complete ULE header is present in current TS. */ /* Extract ULE type field. */ if (priv->ule_sndu_type_1) { priv->ule_sndu_type |= from_where[0]; from_where += 1; /* points to payload start. */ ts_remain -= 1; } else { /* Complete type is present in new TS. */ priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; from_where += 2; /* points to payload start. */ ts_remain -= 2; } break; } if (priv->ule_sndu_type == ULE_TEST) { /* Test SNDU, discarded by the receiver. */ printk(KERN_WARNING "Discarding ULE Test SNDU (%d bytes). " "Resyncing.\n", priv->ule_sndu_len); priv->ule_sndu_len = 0; priv->need_pusi = 1; continue; } skblen = priv->ule_sndu_len; /* Including CRC32 */ if (priv->ule_sndu_type != ULE_BRIDGED) { skblen += ETH_HLEN; #if 1 if (! priv->ule_dbit) skblen -= ETH_ALEN; #endif } priv->ule_skb = dev_alloc_skb(skblen); if (priv->ule_skb == NULL) { printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); ((struct dvb_net_priv *)dev->priv)->stats.rx_dropped++; return; } #if 0 if (priv->ule_sndu_type != ULE_BRIDGED) { // skb_reserve(priv->ule_skb, 2); /* longword align L3 header */ // Create Ethernet header. ethh = (struct ethhdr *)skb_put( priv->ule_skb, ETH_HLEN ); memset( ethh->h_source, 0x00, ETH_ALEN ); if (priv->ule_dbit) { // Dest MAC address not present --> generate our own. memcpy( ethh->h_dest, eth_dest_addr, ETH_ALEN ); } else { // Dest MAC address could be split across two TS cells. // FIXME: implement. printk( KERN_WARNING "%s: got destination MAC " "address.\n", dev->name ); memcpy( ethh->h_dest, eth_dest_addr, ETH_ALEN ); } ethh->h_proto = htons(priv->ule_sndu_type == ULE_LLC ? priv->ule_sndu_len : priv->ule_sndu_type); } #endif /* this includes the CRC32 _and_ dest mac, if !dbit! */ priv->ule_sndu_remain = priv->ule_sndu_len; priv->ule_skb->dev = dev; } /* Copy data into our current skb. */ how_much = min(priv->ule_sndu_remain, (int)ts_remain); if ((priv->ule_ethhdr_complete < ETH_ALEN) && (priv->ule_sndu_type != ULE_BRIDGED)) { ethh = (struct ethhdr *)priv->ule_skb->data; if (! priv->ule_dbit) { if (how_much >= (ETH_ALEN - priv->ule_ethhdr_complete)) { /* copy dest mac address. */ memcpy(skb_put(priv->ule_skb, (ETH_ALEN - priv->ule_ethhdr_complete)), from_where, (ETH_ALEN - priv->ule_ethhdr_complete)); memset(ethh->h_source, 0x00, ETH_ALEN); ethh->h_proto = htons(priv->ule_sndu_type == ULE_LLC ? priv->ule_sndu_len : priv->ule_sndu_type); skb_put(priv->ule_skb, ETH_ALEN + 2); how_much -= (ETH_ALEN - priv->ule_ethhdr_complete); priv->ule_sndu_remain -= (ETH_ALEN - priv->ule_ethhdr_complete); ts_remain -= (ETH_ALEN - priv->ule_ethhdr_complete); from_where += (ETH_ALEN - priv->ule_ethhdr_complete); priv->ule_ethhdr_complete = ETH_ALEN; } } else { /* Generate whole Ethernet header. */ memcpy(ethh->h_dest, eth_dest_addr, ETH_ALEN); memset(ethh->h_source, 0x00, ETH_ALEN); ethh->h_proto = htons(priv->ule_sndu_type == ULE_LLC ? priv->ule_sndu_len : priv->ule_sndu_type); skb_put(priv->ule_skb, ETH_HLEN); priv->ule_ethhdr_complete = ETH_ALEN; } } /* printk(KERN_WARNING "Copying %u bytes, ule_sndu_remain = %u, " "ule_sndu_len = %u.\n", how_much, priv->ule_sndu_remain, priv->ule_sndu_len); */ memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); priv->ule_sndu_remain -= how_much; ts_remain -= how_much; from_where += how_much; if ((priv->ule_ethhdr_complete < ETH_ALEN) && (priv->ule_sndu_type != ULE_BRIDGED)) { priv->ule_ethhdr_complete += how_much; } /* Check for complete payload. */ if (priv->ule_sndu_remain <= 0) { /* Check CRC32, we've got it in our skb already. */ unsigned short ulen = htons(priv->ule_sndu_len); unsigned short utype = htons(priv->ule_sndu_type); struct iovec iov[4] = { { &ulen, sizeof ulen }, { &utype, sizeof utype }, { NULL, 0 }, { priv->ule_skb->data + ETH_HLEN, priv->ule_skb->len - ETH_HLEN - 4 } }; unsigned long ule_crc = ~0L, expected_crc; if (priv->ule_dbit) { /* Set D-bit for CRC32 verification, * if it was set originally. */ ulen |= 0x0080; } else { iov[2].iov_base = priv->ule_skb->data; iov[2].iov_len = ETH_ALEN; } ule_crc = iov_crc32(ule_crc, iov, 4); 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); if (ule_crc != expected_crc) { printk(KERN_WARNING "CRC32 check %s: %#lx / %#lx.\n", ule_crc != expected_crc ? "FAILED" : "OK", ule_crc, expected_crc); hexdump(priv->ule_skb->data + ETH_HLEN, priv->ule_skb->len - ETH_HLEN); ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; ((struct dvb_net_priv *) dev->priv)->stats.rx_crc_errors++; dev_kfree_skb(priv->ule_skb); } else { /* CRC32 was OK. Remove it from skb. */ priv->ule_skb->tail -= 4; priv->ule_skb->len -= 4; /* Stuff into kernel's protocol stack. */ priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); /* If D-bit is set (i.e. destination MAC address not present), * receive the packet anyhw. */ /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) */ priv->ule_skb->pkt_type = PACKET_HOST; ((struct dvb_net_priv *) dev->priv)->stats.rx_packets++; ((struct dvb_net_priv *) dev->priv)->stats.rx_bytes += priv->ule_skb->len; netif_rx(priv->ule_skb); } /* Prepare for next SNDU. */ reset_ule(priv); } /* More data in current TS (look at the bytes following the CRC32)? */ if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { /* Next ULE SNDU starts right there. */ new_ts = 0; priv->ule_skb = NULL; priv->ule_sndu_type_1 = 0; priv->ule_sndu_len = 0; // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", // *(from_where + 0), *(from_where + 1), // *(from_where + 2), *(from_where + 3)); // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); // hexdump(ts, 188); } else { new_ts = 1; ts += TS_SZ; if (priv->ule_skb == NULL) { priv->need_pusi = 1; priv->ule_sndu_type_1 = 0; priv->ule_sndu_len = 0; } } } /* for all available TS cells */ } static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, 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; if (buffer2 != 0) printk(KERN_WARNING "buffer2 not 0: %p.\n", buffer2); if (buffer1_len > 32768) printk(KERN_WARNING "length > 32k: %u.\n", buffer1_len); /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", buffer1_len, buffer1_len / TS_SZ, buffer1); */ dvb_net_ule(dev, buffer1, buffer1_len); return 0; } static void dvb_net_sec(struct net_device *dev, u8 *pkt, int pkt_len) { u8 *eth; struct sk_buff *skb; struct net_device_stats *stats = &(((struct dvb_net_priv *) dev->priv)->stats); /* note: pkt_len includes a 32bit checksum */ if (pkt_len < 16) { printk("%s: IP/MPE packet length = %d too small.\n", dev->name, pkt_len); stats->rx_errors++; stats->rx_length_errors++; return; } /* it seems some ISPs manage to screw up here, so we have to * relax the error checks... */ #if 0 if ((pkt[5] & 0xfd) != 0xc1) { /* drop scrambled or broken packets */ #else if ((pkt[5] & 0x3c) != 0x00) { /* drop scrambled */ #endif stats->rx_errors++; stats->rx_crc_errors++; return; } if (pkt[5] & 0x02) { //FIXME: handle LLC/SNAP stats->rx_dropped++; return; } if (pkt[7]) { /* FIXME: assemble datagram from multiple sections */ stats->rx_errors++; stats->rx_frame_errors++; return; } /* we have 14 byte ethernet header (ip header follows); * 12 byte MPE header; 4 byte checksum; + 2 byte alignment */ if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2))) { //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); stats->rx_dropped++; return; } skb_reserve(skb, 2); /* longword align L3 header */ 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); /* create ethernet header: */ eth[0]=pkt[0x0b]; eth[1]=pkt[0x0a]; eth[2]=pkt[0x09]; eth[3]=pkt[0x08]; eth[4]=pkt[0x04]; eth[5]=pkt[0x03]; eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; eth[12] = 0x08; /* ETH_P_IP */ 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; /** * we rely on the DVB API definition where exactly one complete * section is delivered in buffer1 */ dvb_net_sec (dev, (u8*) buffer1, buffer1_len); return 0; } static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) { return 0; } static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; static int dvb_net_filter_sec_set(struct net_device *dev, struct dmx_section_filter **secfilter, u8 *mac, u8 *mac_mask) { struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; int ret; *secfilter=0; ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); if (ret<0) { printk("%s: could not get filter\n", dev->name); return ret; } (*secfilter)->priv=(void *) dev; memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); (*secfilter)->filter_value[0]=0x3e; (*secfilter)->filter_value[3]=mac[5]; (*secfilter)->filter_value[4]=mac[4]; (*secfilter)->filter_value[8]=mac[3]; (*secfilter)->filter_value[9]=mac[2]; (*secfilter)->filter_value[10]=mac[1]; (*secfilter)->filter_value[11]=mac[0]; (*secfilter)->filter_mask[0] = 0xff; (*secfilter)->filter_mask[3] = mac_mask[5]; (*secfilter)->filter_mask[4] = mac_mask[4]; (*secfilter)->filter_mask[8] = mac_mask[3]; (*secfilter)->filter_mask[9] = mac_mask[2]; (*secfilter)->filter_mask[10] = mac_mask[1]; (*secfilter)->filter_mask[11]=mac_mask[0]; dprintk("%s: filter mac=%02x %02x %02x %02x %02x %02x\n", dev->name, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); dprintk("%s: filter mask=%02x %02x %02x %02x %02x %02x\n", dev->name, mac_mask[0], mac_mask[1], mac_mask[2], mac_mask[3], mac_mask[4], mac_mask[5]); return 0; } 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 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->secfeed || priv->secfilter || priv->multi_secfilter[0]) printk("%s: BUG %d\n", __FUNCTION__, __LINE__); priv->secfeed=0; priv->secfilter=0; priv->tsfeed = 0; if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { 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; } 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=0; return ret; } 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); 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__); 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__); dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); 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 /* we have payloads encapsulated in TS */ dprintk("%s: alloc tsfeed\n", __FUNCTION__); ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); if (ret < 0) { printk("%s: could not allocate ts feed\n", dev->name); return ret; } /* Set netdevice pointer for ts decaps callback. */ priv->tsfeed->priv = (void *)dev; ret = priv->tsfeed->set(priv->tsfeed, priv->pid, TS_PACKET, DMX_TS_PES_OTHER, 188 * 100, /* nr. of bytes delivered per callback */ 32768, /* circular buffer size */ 0, /* descramble */ timeout); if (ret < 0) { printk("%s: could not set ts feed\n", dev->name); priv->demux->release_ts_feed(priv->demux, priv->tsfeed); priv->tsfeed = 0; return ret; } dprintk("%s: start filtering\n", __FUNCTION__); priv->tsfeed->start_filtering(priv->tsfeed); } else return -EINVAL; return 0; } static int dvb_net_feed_stop(struct net_device *dev) { struct dvb_net_priv *priv = (struct dvb_net_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->secfilter) { dprintk("%s: release secfilter\n", __FUNCTION__); priv->secfeed->release_filter(priv->secfeed, priv->secfilter); priv->secfilter=0; } for (i=0; imulti_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]=0; } } priv->demux->release_section_feed(priv->demux, priv->secfeed); priv->secfeed=0; } 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) { dprintk("%s: stop tsfeed\n", __FUNCTION__); priv->tsfeed->stop_filtering(priv->tsfeed); } priv->demux->release_ts_feed(priv->demux, priv->tsfeed); priv->tsfeed = 0; } else printk("%s: no ts feed to stop\n", dev->name); } else return -EINVAL; return 0; } 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; if (priv->multi_num == DVB_NET_MULTICAST_MAX) return -ENOMEM; memcpy(priv->multi_macs[priv->multi_num], mc->dmi_addr, 6); priv->multi_num++; return 0; } static void wq_set_multicast_list (void *data) { struct net_device *dev = data; struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; dvb_net_feed_stop(dev); priv->rx_mode = RX_MODE_UNI; if(dev->flags & IFF_PROMISC) { dprintk("%s: promiscuous mode\n", dev->name); priv->rx_mode = RX_MODE_PROMISC; } else if ((dev->flags & IFF_ALLMULTI)) { dprintk("%s: allmulti mode\n", dev->name); priv->rx_mode = RX_MODE_ALL_MULTI; } else if (dev->mc_count) { int mci; struct dev_mc_list *mc; dprintk("%s: set_mc_list, %d entries\n", dev->name, dev->mc_count); priv->rx_mode = RX_MODE_MULTI; priv->multi_num = 0; 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); } static void dvb_net_set_multicast_list (struct net_device *dev) { struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; schedule_work(&priv->set_multicast_list_wq); } static int dvb_net_set_config(struct net_device *dev, struct ifmap *map) { if (netif_running(dev)) return -EBUSY; return 0; } static void wq_restart_net_feed (void *data) { struct net_device *dev = data; if (netif_running(dev)) { dvb_net_feed_stop(dev); dvb_net_feed_start(dev); } } static int dvb_net_set_mac (struct net_device *dev, void *p) { struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; struct sockaddr *addr=p; memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); if (netif_running(dev)) schedule_work(&priv->restart_net_feed_wq); return 0; } static int dvb_net_open(struct net_device *dev) { struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; priv->in_use++; dvb_net_feed_start(dev); return 0; } static int dvb_net_stop(struct net_device *dev) { struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; priv->in_use--; return dvb_net_feed_stop(dev); } static struct net_device_stats * dvb_net_get_stats(struct net_device *dev) { return &((struct dvb_net_priv*) dev->priv)->stats; } static void dvb_net_setup(struct net_device *dev) { ether_setup(dev); dev->open = dvb_net_open; dev->stop = dvb_net_stop; dev->hard_start_xmit = dvb_net_tx; dev->get_stats = dvb_net_get_stats; dev->set_multicast_list = dvb_net_set_multicast_list; dev->set_config = dvb_net_set_config; dev->set_mac_address = dvb_net_set_mac; dev->mtu = 4096; dev->mc_count = 0; dev->hard_header_cache = NULL; dev->flags |= IFF_NOARP; } static int get_if(struct dvb_net *dvbnet) { int i; for (i=0; istate[i]) break; if (i == DVB_NET_DEVICES_MAX) return -1; dvbnet->state[i]=1; return i; } static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) { 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) return -EINVAL; net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup); if (!net) return -ENOMEM; sprintf(net->name, "dvb%d_%d", dvbnet->dvbdev->adapter->num, if_num); 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->rx_mode = RX_MODE_UNI; priv->need_pusi = 1; priv->tscc = 0; priv->feedtype = feedtype; reset_ule(priv); 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; if ((result = register_netdev(net)) < 0) { dvbnet->device[if_num] = NULL; free_netdev(net); return result; } return if_num; } static int dvb_net_remove_if(struct dvb_net *dvbnet, int num) { struct net_device *net = dvbnet->device[num]; struct dvb_net_priv *priv = net->priv; if (!dvbnet->state[num]) return -EINVAL; if (priv->in_use) return -EBUSY; dvb_net_stop(net); flush_scheduled_work(); 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; 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; int result; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (!try_module_get(dvbdev->adapter->module)) return -EPERM; result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); if (result<0) { module_put(dvbdev->adapter->module); return result; } dvbnetif->if_num=result; break; } case NET_GET_IF: { struct net_device *netdev; struct dvb_net_priv *priv_data; struct dvb_net_if *dvbnetif=(struct dvb_net_if *)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; dvbnetif->pid=priv_data->pid; dvbnetif->feedtype=priv_data->feedtype; break; } case NET_REMOVE_IF: if (!capable(CAP_SYS_ADMIN)) return -EPERM; module_put(dvbdev->adapter->module); return dvb_net_remove_if(dvbnet, (int) (long) parg); /* binary compatiblity cruft */ case __NET_ADD_IF_OLD: { struct __dvb_net_if_old *dvbnetif=(struct __dvb_net_if_old *)parg; int result; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (!try_module_get(dvbdev->adapter->module)) return -EPERM; result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); if (result<0) { module_put(dvbdev->adapter->module); return result; } dvbnetif->if_num=result; break; } case __NET_GET_IF_OLD: { struct net_device *netdev; struct dvb_net_priv *priv_data; struct __dvb_net_if_old *dvbnetif=(struct __dvb_net_if_old *)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; dvbnetif->pid=priv_data->pid; break; } default: return -ENOTTY; } return 0; } static int dvb_net_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { return dvb_usercopy(inode, file, cmd, arg, dvb_net_do_ioctl); } static struct file_operations dvb_net_fops = { .owner = THIS_MODULE, .read = 0, .write = 0, .ioctl = dvb_net_ioctl, .open = dvb_generic_open, .release = dvb_generic_release, .poll = 0, }; static struct dvb_device dvbdev_net = { .priv = 0, .users = 1, .writers = 1, .fops = &dvb_net_fops, }; void dvb_net_release (struct dvb_net *dvbnet) { int i; dvb_unregister_device(dvbnet->dvbdev); for (i=0; istate[i]) continue; dvb_net_remove_if(dvbnet, i); } } int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, struct dmx_demux *dmx) { int i; dvbnet->demux = dmx; for (i=0; istate[i] = 0; dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net, dvbnet, DVB_DEVICE_NET); return 0; }