diff options
Diffstat (limited to 'v4l/kernel-2.6.tmp/dvb_net.c')
| -rw-r--r-- | v4l/kernel-2.6.tmp/dvb_net.c | 1576 |
1 files changed, 0 insertions, 1576 deletions
diff --git a/v4l/kernel-2.6.tmp/dvb_net.c b/v4l/kernel-2.6.tmp/dvb_net.c deleted file mode 100644 index 9fff57c..0000000 --- a/v4l/kernel-2.6.tmp/dvb_net.c +++ /dev/null @@ -1,1576 +0,0 @@ -/* - * dvb_net.c - * - * Copyright (C) 2001 Convergence integrated media GmbH - * Ralph Metzler <ralph@convergence.de> - * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de> - * - * ULE Decapsulation code: - * 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> - * - * ULE Decaps according to RFC 4326. - * - * 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 - */ - -/* - * ULE ChangeLog: - * Feb 2004: hl/ws v1: Implementing draft-fair-ipdvb-ule-01.txt - * - * Dec 2004: hl/ws v2: Implementing draft-ietf-ipdvb-ule-03.txt: - * ULE Extension header handling. - * Bugreports by Moritz Vieth and Hanno Tersteegen, - * Fraunhofer Institute for Open Communication Systems - * Competence Center for Advanced Satellite Communications. - * Bugfixes and robustness improvements. - * Filtering on dest MAC addresses, if present (D-Bit = 0) - * ULE_DEBUG compile-time option. - * Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by - * Christian Praehauser <cpraehaus@cosy.sbg.ac.at>, - * Paris Lodron University of Salzburg. - */ - -/* - * FIXME / TODO (dvb_net.c): - * - * Unloading does not work for 2.6.9 kernels: a refcount doesn't go to zero. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/dvb/net.h> -#include <linux/uio.h> -#include <asm/uaccess.h> -#include <linux/crc32.h> -#include "compat.h" -#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,15) -#include <linux/mutex.h> -#endif - -#include "dvb_demux.h" -#include "dvb_net.h" - -static int dvb_net_debug; -module_param(dvb_net_debug, int, 0444); -MODULE_PARM_DESC(dvb_net_debug, "enable debug messages"); - -#define dprintk(x...) do { if (dvb_net_debug) printk(x); } while (0) - - -static inline __u32 iov_crc32( __u32 c, struct kvec *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; -} - - -#define DVB_NET_MULTICAST_MAX 10 - -#undef ULE_DEBUG - -#ifdef ULE_DEBUG - -#define MAC_ADDR_PRINTFMT "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x" -#define MAX_ADDR_PRINTFMT_ARGS(macap) (macap)[0],(macap)[1],(macap)[2],(macap)[3],(macap)[4],(macap)[5] - -#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 ); - } -} - -#endif - -struct dvb_net_priv { - int in_use; - struct net_device_stats stats; - u16 pid; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20) - struct net_device *net; -#endif - 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; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ - int need_pusi; /* Set to 1, if synchronization on PUSI required. */ - unsigned char tscc; /* TS continuity counter after sync on PUSI. */ - struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ - unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ - unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ - unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ - unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ - unsigned char ule_dbit; /* Whether the DestMAC address present - * or not (bit is set). */ - unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ - int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ - unsigned long ts_count; /* Current ts cell counter. */ -#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,15) - struct mutex mutex; -#else - struct semaphore mutex; -#endif -}; - - -/** - * 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 <kju@debian.org> - */ -static unsigned short dvb_net_eth_type_trans(struct sk_buff *skb, - struct net_device *dev) -{ - struct ethhdr *eth; - unsigned char *rawp; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22) - skb->mac.raw=skb->data; -#else - skb_reset_mac_header(skb); -#endif - skb_pull(skb,dev->hard_header_len); - eth = eth_hdr(skb); - - 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_SC 0xC0 -#define TS_PUSI 0x40 -#define TS_AF_A 0x20 -#define TS_AF_D 0x10 - -/* ULE Extension Header handlers. */ - -#define ULE_TEST 0 -#define ULE_BRIDGED 1 - -#define ULE_OPTEXTHDR_PADDING 0 - -static int ule_test_sndu( struct dvb_net_priv *p ) -{ - return -1; -} - -static int ule_bridged_sndu( struct dvb_net_priv *p ) -{ - struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; - if(ntohs(hdr->h_proto) < 1536) { - int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); - /* A frame Type < 1536 for a bridged frame, introduces a LLC Length field. */ - if(framelen != ntohs(hdr->h_proto)) { - return -1; - } - } - /* Note: - * From RFC4326: - * "A bridged SNDU is a Mandatory Extension Header of Type 1. - * It must be the final (or only) extension header specified in the header chain of a SNDU." - * The 'ule_bridged' flag will cause the extension header processing loop to terminate. - */ - p->ule_bridged = 1; - return 0; -} - -static int ule_exthdr_padding(struct dvb_net_priv *p) -{ - return 0; -} - -/** 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. - */ -static int handle_one_ule_extension( struct dvb_net_priv *p ) -{ - /* Table of mandatory extension header handlers. The header type is the index. */ - static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = - { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; - - /* Table of optional extension header handlers. The header type is the index. */ - static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = - { [0] = ule_exthdr_padding, [1] = NULL, }; - - int ext_len = 0; - unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; - unsigned char htype = p->ule_sndu_type & 0x00FF; - - /* Discriminate mandatory and optional extension headers. */ - if (hlen == 0) { - /* Mandatory extension header */ - if (ule_mandatory_ext_handlers[htype]) { - ext_len = ule_mandatory_ext_handlers[htype]( p ); - if(ext_len >= 0) { - p->ule_next_hdr += ext_len; - if (!p->ule_bridged) { - p->ule_sndu_type = ntohs(*(unsigned short *)p->ule_next_hdr); - p->ule_next_hdr += 2; - } else { - p->ule_sndu_type = ntohs(*(unsigned short *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); - /* This assures the extension handling loop will terminate. */ - } - } - // else: extension handler failed or SNDU should be discarded - } else - ext_len = -1; /* SNDU has to be discarded. */ - } else { - /* Optional extension header. Calculate the length. */ - ext_len = hlen << 1; - /* Process the optional extension header according to its type. */ - if (ule_optional_ext_handlers[htype]) - (void)ule_optional_ext_handlers[htype]( p ); - p->ule_next_hdr += ext_len; - p->ule_sndu_type = ntohs( *(unsigned short *)(p->ule_next_hdr-2) ); - /* - * note: the length of the next header type is included in the - * length of THIS optional extension header - */ - } - - return ext_len; -} - -static int handle_ule_extensions( struct dvb_net_priv *p ) -{ - int total_ext_len = 0, l; - - p->ule_next_hdr = p->ule_skb->data; - do { - l = handle_one_ule_extension( p ); - if (l < 0) - return l; /* Stop extension header processing and discard SNDU. */ - total_ext_len += l; -#ifdef ULE_DEBUG - dprintk("handle_ule_extensions: ule_next_hdr=%p, ule_sndu_type=%i, " - "l=%i, total_ext_len=%i\n", p->ule_next_hdr, - (int) p->ule_sndu_type, l, total_ext_len); -#endif - - } while (p->ule_sndu_type < 1536); - - return total_ext_len; -} - - -/** Prepare for a new ULE SNDU: reset the decoder state. */ -static inline void reset_ule( struct dvb_net_priv *p ) -{ - p->ule_skb = NULL; - p->ule_next_hdr = 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_bridged = 0; -} - -/** - * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of - * TS cells of a single PID. - */ -static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) -{ - struct dvb_net_priv *priv = dev->priv; - unsigned long skipped = 0L; - const u8 *ts, *ts_end, *from_where = NULL; - u8 ts_remain = 0, how_much = 0, new_ts = 1; - struct ethhdr *ethh = NULL; - -#ifdef ULE_DEBUG - /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ - static unsigned char ule_hist[100*TS_SZ]; - static unsigned char *ule_where = ule_hist, ule_dump = 0; -#endif - - /* For all TS cells in current buffer. - * Appearently, we are called for every single TS cell. - */ - for (ts = buf, ts_end = buf + buf_len; ts < ts_end; /* no default incr. */ ) { - - if (new_ts) { - /* We are about to process a new TS cell. */ - -#ifdef ULE_DEBUG - if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; - memcpy( ule_where, ts, TS_SZ ); - if (ule_dump) { - hexdump( ule_where, TS_SZ ); - ule_dump = 0; - } - ule_where += TS_SZ; -#endif - - /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ - if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { - printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", - priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6); - - /* Drop partly decoded SNDU, reset state, resync on PUSI. */ - if (priv->ule_skb) { - dev_kfree_skb( priv->ule_skb ); - /* Prepare for next SNDU. */ - priv->stats.rx_errors++; - priv->stats.rx_frame_errors++; - } - reset_ule(priv); - priv->need_pusi = 1; - - /* Continue with next TS cell. */ - ts += TS_SZ; - priv->ts_count++; - 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. */ - /* Synchronize continuity counter. */ - priv->tscc = ts[3] & 0x0F; - /* There is a pointer field here. */ - if (ts[4] > ts_remain) { - printk(KERN_ERR "%lu: Invalid ULE packet " - "(pointer field %d)\n", priv->ts_count, ts[4]); - ts += TS_SZ; - priv->ts_count++; - continue; - } - /* Skip to destination of pointer field. */ - from_where = &ts[5] + ts[4]; - ts_remain -= 1 + ts[4]; - skipped = 0; - } else { - skipped++; - ts += TS_SZ; - priv->ts_count++; - continue; - } - } - - if (new_ts) { - /* Check continuity counter. */ - if ((ts[3] & 0x0F) == priv->tscc) - priv->tscc = (priv->tscc + 1) & 0x0F; - else { - /* TS discontinuity handling: */ - printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " - "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); - /* Drop partly decoded SNDU, reset state, resync on PUSI. */ - if (priv->ule_skb) { - dev_kfree_skb( priv->ule_skb ); - /* Prepare for next SNDU. */ - // reset_ule(priv); moved to below. - priv->stats.rx_errors++; - priv->stats.rx_frame_errors++; - } - reset_ule(priv); - /* skip to next PUSI. */ - 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 wrap). */ - if (ts[1] & TS_PUSI) { - if (! priv->need_pusi) { - if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) { - /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ - printk(KERN_WARNING "%lu: Invalid pointer " - "field: %u.\n", priv->ts_count, *from_where); - - /* Drop partly decoded SNDU, reset state, resync on PUSI. */ - if (priv->ule_skb) { - dev_kfree_skb( priv->ule_skb ); - ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; - ((struct dvb_net_priv *) dev->priv)->stats.rx_frame_errors++; - } - reset_ule(priv); - priv->need_pusi = 1; - continue; - } - /* 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) { - /* Current SNDU lacks more data than there could be available in the - * current TS cell. */ - priv->stats.rx_errors++; - priv->stats.rx_length_errors++; - printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " - "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", - priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); - dev_kfree_skb(priv->ule_skb); - /* Prepare for next SNDU. */ - reset_ule(priv); - /* Resync: go to where pointer field points to: start of next ULE SNDU. */ - from_where += ts[4]; - ts_remain -= ts[4]; - } - } - } - - /* Check if new payload needs to be started. */ - if (priv->ule_skb == NULL) { - /* Start a new payload with 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) { - /* Got at least two bytes, thus extrace the SNDU length. */ - 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; - - if (priv->ule_sndu_len < 5) { - printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " - "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); - priv->stats.rx_errors++; - priv->stats.rx_length_errors++; - priv->ule_sndu_len = 0; - priv->need_pusi = 1; - new_ts = 1; - ts += TS_SZ; - priv->ts_count++; - 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; - /* Continue w/ next TS. */ - case 0: - new_ts = 1; - ts += TS_SZ; - priv->ts_count++; - 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; - } - - /* Allocate the skb (decoder target buffer) with the correct size, as follows: - * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ - priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); - 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; - } - - /* This includes the CRC32 _and_ dest mac, if !dbit. */ - priv->ule_sndu_remain = priv->ule_sndu_len; - priv->ule_skb->dev = dev; - /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ - skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); - } - - /* Copy data into our current skb. */ - how_much = min(priv->ule_sndu_remain, (int)ts_remain); - 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; - - /* 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); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22) - const u8 *tail; -#endif - struct kvec iov[3] = { - { &ulen, sizeof ulen }, - { &utype, sizeof utype }, - { priv->ule_skb->data, priv->ule_skb->len - 4 } - }; - u32 ule_crc = ~0L, expected_crc; - if (priv->ule_dbit) { - /* Set D-bit for CRC32 verification, - * if it was set originally. */ - ulen |= 0x0080; - } - - ule_crc = iov_crc32(ule_crc, iov, 3); -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22) - 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); -#else - tail = skb_tail_pointer(priv->ule_skb); - expected_crc = *(tail - 4) << 24 | - *(tail - 3) << 16 | - *(tail - 2) << 8 | - *(tail - 1); -#endif - if (ule_crc != expected_crc) { - printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, 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); - -#ifdef ULE_DEBUG - hexdump( iov[0].iov_base, iov[0].iov_len ); - hexdump( iov[1].iov_base, iov[1].iov_len ); - hexdump( iov[2].iov_base, iov[2].iov_len ); - - if (ule_where == ule_hist) { - hexdump( &ule_hist[98*TS_SZ], TS_SZ ); - hexdump( &ule_hist[99*TS_SZ], TS_SZ ); - } else if (ule_where == &ule_hist[TS_SZ]) { - hexdump( &ule_hist[99*TS_SZ], TS_SZ ); - hexdump( ule_hist, TS_SZ ); - } else { - hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); - hexdump( ule_where - TS_SZ, TS_SZ ); - } - ule_dump = 1; -#endif - - priv->stats.rx_errors++; - priv->stats.rx_crc_errors++; - dev_kfree_skb(priv->ule_skb); - } else { - /* CRC32 verified OK. */ - u8 dest_addr[ETH_ALEN]; - static const u8 bc_addr[ETH_ALEN] = - { [ 0 ... ETH_ALEN-1] = 0xff }; - - /* CRC32 was OK. Remove it from skb. */ - priv->ule_skb->tail -= 4; - priv->ule_skb->len -= 4; - - if (!priv->ule_dbit) { - /* - * The destination MAC address is the - * next data in the skb. It comes - * before any extension headers. - * - * Check if the payload of this SNDU - * should be passed up the stack. - */ - register int drop = 0; - if (priv->rx_mode != RX_MODE_PROMISC) { - if (priv->ule_skb->data[0] & 0x01) { - /* multicast or broadcast */ - if (memcmp(priv->ule_skb->data, bc_addr, ETH_ALEN)) { - /* multicast */ - if (priv->rx_mode == RX_MODE_MULTI) { - int i; - for(i = 0; i < priv->multi_num && memcmp(priv->ule_skb->data, priv->multi_macs[i], ETH_ALEN); i++) - ; - if (i == priv->multi_num) - drop = 1; - } else if (priv->rx_mode != RX_MODE_ALL_MULTI) - drop = 1; /* no broadcast; */ - /* else: all multicast mode: accept all multicast packets */ - } - /* else: broadcast */ - } - else if (memcmp(priv->ule_skb->data, dev->dev_addr, ETH_ALEN)) - drop = 1; - /* else: destination address matches the MAC address of our receiver device */ - } - /* else: promiscious mode; pass everything up the stack */ - - if (drop) { -#ifdef ULE_DEBUG - dprintk("Dropping SNDU: MAC destination address does not match: dest addr: "MAC_ADDR_PRINTFMT", dev addr: "MAC_ADDR_PRINTFMT"\n", - MAX_ADDR_PRINTFMT_ARGS(priv->ule_skb->data), MAX_ADDR_PRINTFMT_ARGS(dev->dev_addr)); -#endif - dev_kfree_skb(priv->ule_skb); - goto sndu_done; - } - else - { -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22) - memcpy(dest_addr, priv->ule_skb->data, ETH_ALEN); -#else - skb_copy_from_linear_data(priv->ule_skb, - dest_addr, - ETH_ALEN); -#endif - skb_pull(priv->ule_skb, ETH_ALEN); - } - } - - /* Handle ULE Extension Headers. */ - if (priv->ule_sndu_type < 1536) { - /* There is an extension header. Handle it accordingly. */ - int l = handle_ule_extensions(priv); - if (l < 0) { - /* Mandatory extension header unknown or TEST SNDU. Drop it. */ - // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); - dev_kfree_skb(priv->ule_skb); - goto sndu_done; - } - skb_pull(priv->ule_skb, l); - } - - /* - * Construct/assure correct ethernet header. - * Note: in bridged mode (priv->ule_bridged != - * 0) we already have the (original) ethernet - * header at the start of the payload (after - * optional dest. address and any extension - * headers). - */ - - if (!priv->ule_bridged) { - skb_push(priv->ule_skb, ETH_HLEN); - ethh = (struct ethhdr *)priv->ule_skb->data; - if (!priv->ule_dbit) { - /* dest_addr buffer is only valid if priv->ule_dbit == 0 */ - memcpy(ethh->h_dest, dest_addr, ETH_ALEN); - memset(ethh->h_source, 0, ETH_ALEN); - } - else /* zeroize source and dest */ - memset( ethh, 0, ETH_ALEN*2 ); - - ethh->h_proto = htons(priv->ule_sndu_type); - } - /* else: skb is in correct state; nothing to do. */ - priv->ule_bridged = 0; - - /* 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 anyhow. */ - /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) - priv->ule_skb->pkt_type = PACKET_HOST; */ - priv->stats.rx_packets++; - priv->stats.rx_bytes += priv->ule_skb->len; - netif_rx(priv->ule_skb); - } - sndu_done: - /* 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; - priv->ts_count++; - 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 = feed->priv; - - if (buffer2 != 0) - printk(KERN_WARNING "buffer2 not 0: %p.\n", buffer2); - if (buffer1_len > 32768) - printk(KERN_WARNING "length > 32k: %zu.\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, - const u8 *pkt, int pkt_len) -{ - 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) { - 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 /* keep */ - 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) { - /* 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 */ - 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, 8 byte LLC/SNAP - */ - 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_reserve(skb, 2); /* longword align L3 header */ - skb->dev = dev; - - /* copy L3 payload */ - 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[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; - - 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 = filter->priv; - - /** - * we rely on the DVB API definition where exactly one complete - * section is delivered in buffer1 - */ - dvb_net_sec (dev, buffer1, buffer1_len); - return 0; -} - -static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) -{ - dev_kfree_skb(skb); - 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 = dev->priv; - int ret; - - *secfilter=NULL; - 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 = 0, i; - 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); - mutex_lock(&priv->mutex); - if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) - printk("%s: BUG %d\n", __FUNCTION__, __LINE__); - - priv->secfeed=NULL; - priv->secfilter=NULL; - priv->tsfeed = NULL; - - 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); - goto error; - } - - ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 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; - goto error; - } - - 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, 10000000 }; // 10 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); - goto error; - } - - /* Set netdevice pointer for ts decaps callback. */ - priv->tsfeed->priv = (void *)dev; - ret = priv->tsfeed->set(priv->tsfeed, - priv->pid, /* pid */ - TS_PACKET, /* type */ - DMX_TS_PES_OTHER, /* pes type */ - 32768, /* circular buffer size */ - timeout /* 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 = NULL; - goto error; - } - - dprintk("%s: start filtering\n", __FUNCTION__); - priv->tsfeed->start_filtering(priv->tsfeed); - } else - ret = -EINVAL; - -error: - mutex_unlock(&priv->mutex); - return ret; -} - -static int dvb_net_feed_stop(struct net_device *dev) -{ - struct dvb_net_priv *priv = dev->priv; - int i, ret = 0; - - dprintk("%s\n", __FUNCTION__); - mutex_lock(&priv->mutex); - 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=NULL; - } - - 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->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) { - dprintk("%s: stop tsfeed\n", __FUNCTION__); - priv->tsfeed->stop_filtering(priv->tsfeed); - } - priv->demux->release_ts_feed(priv->demux, priv->tsfeed); - priv->tsfeed = NULL; - } - else - printk("%s: no ts feed to stop\n", dev->name); - } else - ret = -EINVAL; - mutex_unlock(&priv->mutex); - return ret; -} - - -static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc) -{ - struct dvb_net_priv *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; -} - - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) -static void wq_set_multicast_list (void *data) -#else -static void wq_set_multicast_list (struct work_struct *work) -#endif -{ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) - struct net_device *dev = data; - struct dvb_net_priv *priv = dev->priv; -#else - struct dvb_net_priv *priv = - container_of(work, struct dvb_net_priv, set_multicast_list_wq); - struct net_device *dev = priv->net; -#endif - - dvb_net_feed_stop(dev); - priv->rx_mode = RX_MODE_UNI; -#ifdef OLD_XMIT_LOCK /* Kernels equal or lower than 2.6.17 */ - spin_lock_bh(&dev->xmit_lock); -#else -// netif_tx_lock_bh(dev); -#endif - - 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); - } - } - -#ifdef OLD_XMIT_LOCK /* Kernels equal or lower than 2.6.17 */ - spin_unlock_bh(&dev->xmit_lock); -#else -// netif_tx_unlock_bh(dev); -#endif - dvb_net_feed_start(dev); -} - - -static void dvb_net_set_multicast_list (struct net_device *dev) -{ - struct dvb_net_priv *priv = dev->priv; - schedule_work(&priv->set_multicast_list_wq); -} - - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) -static void wq_restart_net_feed (void *data) -#else -static void wq_restart_net_feed (struct work_struct *work) -#endif -{ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) - struct net_device *dev = data; -#else - struct dvb_net_priv *priv = - container_of(work, struct dvb_net_priv, restart_net_feed_wq); - struct net_device *dev = priv->net; -#endif - - 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 = 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 = 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 = 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; -} - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) -static const struct header_ops dvb_header_ops = { - .create = eth_header, - .parse = eth_header_parse, - .rebuild = eth_rebuild_header, -}; -#endif - -static void dvb_net_setup(struct net_device *dev) -{ - ether_setup(dev); - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) - dev->header_ops = &dvb_header_ops; -#else - dev->hard_header_cache = NULL; -#endif - 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_mac_address = dvb_net_set_mac; - dev->mtu = 4096; - dev->mc_count = 0; - - dev->flags |= IFF_NOARP; -} - -static int get_if(struct dvb_net *dvbnet) -{ - int i; - - for (i=0; i<DVB_NET_DEVICES_MAX; i++) - if (!dvbnet->state[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; - - if (dvbnet->dvbdev->id) - snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", - dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); - else - /* compatibility fix to keep dvb0_0 format */ - snprintf(net->name, IFNAMSIZ, "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; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20) - priv->net = net; -#endif - 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); - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) - INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list, net); - INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed, net); -#else - INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); - INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); -#endif - mutex_init(&priv->mutex); - - net->base_addr = pid; - - if ((result = register_netdev(net)) < 0) { - dvbnet->device[if_num] = NULL; - free_netdev(net); - return result; - } - printk("dvb_net: created network interface %s\n", net->name); - - return if_num; -} - -static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) -{ - struct net_device *net = dvbnet->device[num]; - struct dvb_net_priv *priv; - - if (!dvbnet->state[num]) - return -EINVAL; - priv = net->priv; - if (priv->in_use) - return -EBUSY; - - dvb_net_stop(net); - flush_scheduled_work(); - printk("dvb_net: removed network interface %s\n", net->name); - 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 = 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 = 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 = parg; - - if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || - !dvbnet->state[dvbnetif->if_num]) - return -EINVAL; - - netdev = dvbnet->device[dvbnetif->if_num]; - - priv_data = netdev->priv; - dvbnetif->pid=priv_data->pid; - dvbnetif->feedtype=priv_data->feedtype; - break; - } - case NET_REMOVE_IF: - { - int ret; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) - return -EINVAL; - ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); - if (!ret) - module_put(dvbdev->adapter->module); - return ret; - } - - /* binary compatiblity cruft */ - case __NET_ADD_IF_OLD: - { - struct __dvb_net_if_old *dvbnetif = 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 = parg; - - if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || - !dvbnet->state[dvbnetif->if_num]) - return -EINVAL; - - netdev = dvbnet->device[dvbnetif->if_num]; - - priv_data = 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 int dvb_net_close(struct inode *inode, struct file *file) -{ - struct dvb_device *dvbdev = file->private_data; - struct dvb_net *dvbnet = dvbdev->priv; - - dvb_generic_release(inode, file); - - if(dvbdev->users == 1 && dvbnet->exit == 1) { - fops_put(file->f_op); - file->f_op = NULL; - wake_up(&dvbdev->wait_queue); - } - return 0; -} - - -static struct file_operations dvb_net_fops = { - .owner = THIS_MODULE, - .ioctl = dvb_net_ioctl, - .open = dvb_generic_open, - .release = dvb_net_close, -}; - -static struct dvb_device dvbdev_net = { - .priv = NULL, - .users = 1, - .writers = 1, - .fops = &dvb_net_fops, -}; - - -void dvb_net_release (struct dvb_net *dvbnet) -{ - int i; - - dvbnet->exit = 1; - if (dvbnet->dvbdev->users < 1) - wait_event(dvbnet->dvbdev->wait_queue, - dvbnet->dvbdev->users==1); - - dvb_unregister_device(dvbnet->dvbdev); - - for (i=0; i<DVB_NET_DEVICES_MAX; i++) { - if (!dvbnet->state[i]) - continue; - dvb_net_remove_if(dvbnet, i); - } -} -EXPORT_SYMBOL(dvb_net_release); - - -int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, - struct dmx_demux *dmx) -{ - int i; - - dvbnet->demux = dmx; - - for (i=0; i<DVB_NET_DEVICES_MAX; i++) - dvbnet->state[i] = 0; - - dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net, - dvbnet, DVB_DEVICE_NET); - - return 0; -} -EXPORT_SYMBOL(dvb_net_init); |