* 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 = netdev_priv(dev);
- 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;
- bool error = false;
+struct dvb_net_ule_handle {
+ struct net_device *dev;
+ struct dvb_net_priv *priv;
+ struct ethhdr *ethh;
+ const u8 *buf;
+ size_t buf_len;
+ unsigned long skipped;
+ const u8 *ts, *ts_end, *from_where;
+ u8 ts_remain, how_much, new_ts;
+ bool error;
#ifdef ULE_DEBUG
- /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */
+ /*
+ * 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;
#endif
+};
+
+static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len)
+{
+ struct dvb_net_ule_handle h = {
+ .dev = dev,
+ .buf = buf,
+ .buf_len = buf_len,
+ .skipped = 0L,
+ .ts = NULL,
+ .ts_end = NULL,
+ .from_where = NULL,
+ .ts_remain = 0,
+ .how_much = 0,
+ .new_ts = 1,
+ .ethh = NULL,
+ .error = false,
+#ifdef ULE_DEBUG
+ .ule_where = ule_hist,
+#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) {
+ for (h.ts = h.buf, h.ts_end = h.buf + h.buf_len; h.ts < h.ts_end; /* no incr. */ ) {
+ if (h.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;
+ if (h.ule_where >= &h.ule_hist[100*TS_SZ]) h.ule_where = h.ule_hist;
+ memcpy( h.ule_where, h.ts, TS_SZ );
+ if (h.ule_dump) {
+ hexdump( h.ule_where, TS_SZ );
+ h.ule_dump = 0;
}
- ule_where += TS_SZ;
+ h.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)) {
+ /* Check TS h.error conditions: sync_byte, transport_error_indicator, scrambling_control . */
+ if ((h.ts[0] != TS_SYNC) || (h.ts[1] & TS_TEI) || ((h.ts[3] & TS_SC) != 0)) {
pr_warn("%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n",
- priv->ts_count, ts[0],
- (ts[1] & TS_TEI) >> 7,
- (ts[3] & TS_SC) >> 6);
+ h.priv->ts_count, h.ts[0],
+ (h.ts[1] & TS_TEI) >> 7,
+ (h.ts[3] & TS_SC) >> 6);
/* Drop partly decoded SNDU, reset state, resync on PUSI. */
- if (priv->ule_skb) {
- dev_kfree_skb( priv->ule_skb );
+ if (h.priv->ule_skb) {
+ dev_kfree_skb( h.priv->ule_skb );
/* Prepare for next SNDU. */
- dev->stats.rx_errors++;
- dev->stats.rx_frame_errors++;
+ h.dev->stats.rx_errors++;
+ h.dev->stats.rx_frame_errors++;
}
- reset_ule(priv);
- priv->need_pusi = 1;
+ reset_ule(h.priv);
+ h.priv->need_pusi = 1;
/* Continue with next TS cell. */
- ts += TS_SZ;
- priv->ts_count++;
+ h.ts += TS_SZ;
+ h.priv->ts_count++;
continue;
}
- ts_remain = 184;
- from_where = ts + 4;
+ h.ts_remain = 184;
+ h.from_where = h.ts + 4;
}
/* Synchronize on PUSI, if required. */
- if (priv->need_pusi) {
- if (ts[1] & TS_PUSI) {
+ if (h.priv->need_pusi) {
+ if (h.ts[1] & TS_PUSI) {
/* Find beginning of first ULE SNDU in current TS cell. */
/* Synchronize continuity counter. */
- priv->tscc = ts[3] & 0x0F;
+ h.priv->tscc = h.ts[3] & 0x0F;
/* There is a pointer field here. */
- if (ts[4] > ts_remain) {
+ if (h.ts[4] > h.ts_remain) {
pr_err("%lu: Invalid ULE packet (pointer field %d)\n",
- priv->ts_count, ts[4]);
- ts += TS_SZ;
- priv->ts_count++;
+ h.priv->ts_count, h.ts[4]);
+ h.ts += TS_SZ;
+ h.priv->ts_count++;
continue;
}
/* Skip to destination of pointer field. */
- from_where = &ts[5] + ts[4];
- ts_remain -= 1 + ts[4];
- skipped = 0;
+ h.from_where = &h.ts[5] + h.ts[4];
+ h.ts_remain -= 1 + h.ts[4];
+ h.skipped = 0;
} else {
- skipped++;
- ts += TS_SZ;
- priv->ts_count++;
+ h.skipped++;
+ h.ts += TS_SZ;
+ h.priv->ts_count++;
continue;
}
}
- if (new_ts) {
+ if (h.new_ts) {
/* Check continuity counter. */
- if ((ts[3] & 0x0F) == priv->tscc)
- priv->tscc = (priv->tscc + 1) & 0x0F;
+ if ((h.ts[3] & 0x0F) == h.priv->tscc)
+ h.priv->tscc = (h.priv->tscc + 1) & 0x0F;
else {
/* TS discontinuity handling: */
pr_warn("%lu: TS discontinuity: got %#x, expected %#x.\n",
- priv->ts_count, ts[3] & 0x0F,
- priv->tscc);
+ h.priv->ts_count, h.ts[3] & 0x0F,
+ h.priv->tscc);
/* Drop partly decoded SNDU, reset state, resync on PUSI. */
- if (priv->ule_skb) {
- dev_kfree_skb( priv->ule_skb );
+ if (h.priv->ule_skb) {
+ dev_kfree_skb( h.priv->ule_skb );
/* Prepare for next SNDU. */
- // reset_ule(priv); moved to below.
- dev->stats.rx_errors++;
- dev->stats.rx_frame_errors++;
+ // reset_ule(h.priv); moved to below.
+ h.dev->stats.rx_errors++;
+ h.dev->stats.rx_frame_errors++;
}
- reset_ule(priv);
+ reset_ule(h.priv);
/* skip to next PUSI. */
- priv->need_pusi = 1;
+ h.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) {
+ if (h.ts[1] & TS_PUSI) {
+ if (! h.priv->need_pusi) {
+ if (!(*h.from_where < (h.ts_remain-1)) || *h.from_where != h.priv->ule_sndu_remain) {
/* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */
pr_warn("%lu: Invalid pointer field: %u.\n",
- priv->ts_count,
- *from_where);
+ h.priv->ts_count,
+ *h.from_where);
/* Drop partly decoded SNDU, reset state, resync on PUSI. */
- if (priv->ule_skb) {
- error = true;
- dev_kfree_skb(priv->ule_skb);
+ if (h.priv->ule_skb) {
+ h.error = true;
+ dev_kfree_skb(h.priv->ule_skb);
}
- if (error || priv->ule_sndu_remain) {
- dev->stats.rx_errors++;
- dev->stats.rx_frame_errors++;
- error = false;
+ if (h.error || h.priv->ule_sndu_remain) {
+ h.dev->stats.rx_errors++;
+ h.dev->stats.rx_frame_errors++;
+ h.error = false;
}
- reset_ule(priv);
- priv->need_pusi = 1;
+ reset_ule(h.priv);
+ h.priv->need_pusi = 1;
continue;
}
/* Skip pointer field (we're processing a
* packed payload). */
- from_where += 1;
- ts_remain -= 1;
+ h.from_where += 1;
+ h.ts_remain -= 1;
} else
- priv->need_pusi = 0;
+ h.priv->need_pusi = 0;
- if (priv->ule_sndu_remain > 183) {
+ if (h.priv->ule_sndu_remain > 183) {
/* Current SNDU lacks more data than there could be available in the
* current TS cell. */
- dev->stats.rx_errors++;
- dev->stats.rx_length_errors++;
- pr_warn("%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);
+ h.dev->stats.rx_errors++;
+ h.dev->stats.rx_length_errors++;
+ pr_warn("%lu: Expected %d more SNDU bytes, but got PUSI (pf %d, h.ts_remain %d). Flushing incomplete payload.\n",
+ h.priv->ts_count,
+ h.priv->ule_sndu_remain,
+ h.ts[4], h.ts_remain);
+ dev_kfree_skb(h.priv->ule_skb);
/* Prepare for next SNDU. */
- reset_ule(priv);
+ reset_ule(h.priv);
/* Resync: go to where pointer field points to: start of next ULE SNDU. */
- from_where += ts[4];
- ts_remain -= ts[4];
+ h.from_where += h.ts[4];
+ h.ts_remain -= h.ts[4];
}
}
}
/* Check if new payload needs to be started. */
- if (priv->ule_skb == NULL) {
+ if (h.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) {
+ * Check h.ts_remain has to be >= 2 here. */
+ if (h.ts_remain < 2) {
pr_warn("Invalid payload packing: only %d bytes left in TS. Resyncing.\n",
- ts_remain);
- priv->ule_sndu_len = 0;
- priv->need_pusi = 1;
- ts += TS_SZ;
+ h.ts_remain);
+ h.priv->ule_sndu_len = 0;
+ h.priv->need_pusi = 1;
+ h.ts += TS_SZ;
continue;
}
- if (! priv->ule_sndu_len) {
+ if (! h.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) {
+ h.priv->ule_sndu_len = h.from_where[0] << 8 | h.from_where[1];
+ if (h.priv->ule_sndu_len & 0x8000) {
/* D-Bit is set: no dest mac present. */
- priv->ule_sndu_len &= 0x7FFF;
- priv->ule_dbit = 1;
+ h.priv->ule_sndu_len &= 0x7FFF;
+ h.priv->ule_dbit = 1;
} else
- priv->ule_dbit = 0;
+ h.priv->ule_dbit = 0;
- if (priv->ule_sndu_len < 5) {
+ if (h.priv->ule_sndu_len < 5) {
pr_warn("%lu: Invalid ULE SNDU length %u. Resyncing.\n",
- priv->ts_count,
- priv->ule_sndu_len);
- dev->stats.rx_errors++;
- dev->stats.rx_length_errors++;
- priv->ule_sndu_len = 0;
- priv->need_pusi = 1;
- new_ts = 1;
- ts += TS_SZ;
- priv->ts_count++;
+ h.priv->ts_count,
+ h.priv->ule_sndu_len);
+ h.dev->stats.rx_errors++;
+ h.dev->stats.rx_length_errors++;
+ h.priv->ule_sndu_len = 0;
+ h.priv->need_pusi = 1;
+ h.new_ts = 1;
+ h.ts += TS_SZ;
+ h.priv->ts_count++;
continue;
}
- ts_remain -= 2; /* consume the 2 bytes SNDU length. */
- from_where += 2;
+ h.ts_remain -= 2; /* consume the 2 bytes SNDU length. */
+ h.from_where += 2;
}
- priv->ule_sndu_remain = priv->ule_sndu_len + 2;
+ h.priv->ule_sndu_remain = h.priv->ule_sndu_len + 2;
/*
* State of current TS:
- * ts_remain (remaining bytes in the current TS cell)
+ * h.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) {
+ switch (h.ts_remain) {
case 1:
- priv->ule_sndu_remain--;
- 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;
+ h.priv->ule_sndu_remain--;
+ h.priv->ule_sndu_type = h.from_where[0] << 8;
+ h.priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */
+ h.ts_remain -= 1; h.from_where += 1;
/* Continue w/ next TS. */
case 0:
- new_ts = 1;
- ts += TS_SZ;
- priv->ts_count++;
+ h.new_ts = 1;
+ h.ts += TS_SZ;
+ h.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_1 = 0;
- priv->ule_sndu_type |= from_where[0];
- from_where += 1; /* points to payload start. */
- ts_remain -= 1;
+ if (h.priv->ule_sndu_type_1) {
+ h.priv->ule_sndu_type_1 = 0;
+ h.priv->ule_sndu_type |= h.from_where[0];
+ h.from_where += 1; /* points to payload start. */
+ h.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;
+ h.priv->ule_sndu_type = h.from_where[0] << 8 | h.from_where[1];
+ h.from_where += 2; /* points to payload start. */
+ h.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) {
+ h.priv->ule_skb = dev_alloc_skb( h.priv->ule_sndu_len + ETH_HLEN + ETH_ALEN );
+ if (h.priv->ule_skb == NULL) {
pr_notice("%s: Memory squeeze, dropping packet.\n",
- dev->name);
- dev->stats.rx_dropped++;
+ h.dev->name);
+ h.dev->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;
+ h.priv->ule_sndu_remain = h.priv->ule_sndu_len;
+ h.priv->ule_skb->dev = h.dev;
/* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */
- skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN );
+ skb_reserve( h.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;
+ h.how_much = min(h.priv->ule_sndu_remain, (int)h.ts_remain);
+ memcpy(skb_put(h.priv->ule_skb, h.how_much), h.from_where, h.how_much);
+ h.priv->ule_sndu_remain -= h.how_much;
+ h.ts_remain -= h.how_much;
+ h.from_where += h.how_much;
/* Check for complete payload. */
- if (priv->ule_sndu_remain <= 0) {
+ if (h.priv->ule_sndu_remain <= 0) {
/* Check CRC32, we've got it in our skb already. */
- __be16 ulen = htons(priv->ule_sndu_len);
- __be16 utype = htons(priv->ule_sndu_type);
+ __be16 ulen = htons(h.priv->ule_sndu_len);
+ __be16 utype = htons(h.priv->ule_sndu_type);
const u8 *tail;
struct kvec iov[3] = {
{ &ulen, sizeof ulen },
{ &utype, sizeof utype },
- { priv->ule_skb->data, priv->ule_skb->len - 4 }
+ { h.priv->ule_skb->data, h.priv->ule_skb->len - 4 }
};
u32 ule_crc = ~0L, expected_crc;
- if (priv->ule_dbit) {
+ if (h.priv->ule_dbit) {
/* Set D-bit for CRC32 verification,
* if it was set originally. */
ulen |= htons(0x8000);
}
ule_crc = iov_crc32(ule_crc, iov, 3);
- tail = skb_tail_pointer(priv->ule_skb);
+ tail = skb_tail_pointer(h.priv->ule_skb);
expected_crc = *(tail - 4) << 24 |
*(tail - 3) << 16 |
*(tail - 2) << 8 |
*(tail - 1);
if (ule_crc != expected_crc) {
- pr_warn("%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);
+ pr_warn("%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, h.ts_remain %d, next 2: %x.\n",
+ h.priv->ts_count, ule_crc, expected_crc,
+ h.priv->ule_sndu_len, h.priv->ule_sndu_type,
+ h.ts_remain,
+ h.ts_remain > 2 ? *(unsigned short *)h.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 );
+ if (h.ule_where == h.ule_hist) {
+ hexdump( &h.ule_hist[98*TS_SZ], TS_SZ );
+ hexdump( &h.ule_hist[99*TS_SZ], TS_SZ );
+ } else if (h.ule_where == &h.ule_hist[TS_SZ]) {
+ hexdump( &h.ule_hist[99*TS_SZ], TS_SZ );
+ hexdump( h.ule_hist, TS_SZ );
} else {
- hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ );
- hexdump( ule_where - TS_SZ, TS_SZ );
+ hexdump( h.ule_where - TS_SZ - TS_SZ, TS_SZ );
+ hexdump( h.ule_where - TS_SZ, TS_SZ );
}
- ule_dump = 1;
+ h.ule_dump = 1;
#endif
- dev->stats.rx_errors++;
- dev->stats.rx_crc_errors++;
- dev_kfree_skb(priv->ule_skb);
+ h.dev->stats.rx_errors++;
+ h.dev->stats.rx_crc_errors++;
+ dev_kfree_skb(h.priv->ule_skb);
} else {
/* CRC32 verified OK. */
u8 dest_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;
+ h.priv->ule_skb->tail -= 4;
+ h.priv->ule_skb->len -= 4;
- if (!priv->ule_dbit) {
+ if (!h.priv->ule_dbit) {
/*
* The destination MAC address is the
* next data in the skb. It comes
* should be passed up the stack.
*/
register int drop = 0;
- if (priv->rx_mode != RX_MODE_PROMISC) {
- if (priv->ule_skb->data[0] & 0x01) {
+ if (h.priv->rx_mode != RX_MODE_PROMISC) {
+ if (h.priv->ule_skb->data[0] & 0x01) {
/* multicast or broadcast */
- if (!ether_addr_equal(priv->ule_skb->data, bc_addr)) {
+ if (!ether_addr_equal(h.priv->ule_skb->data, bc_addr)) {
/* multicast */
- if (priv->rx_mode == RX_MODE_MULTI) {
+ if (h.priv->rx_mode == RX_MODE_MULTI) {
int i;
- for(i = 0; i < priv->multi_num &&
- !ether_addr_equal(priv->ule_skb->data,
- priv->multi_macs[i]); i++)
+ for(i = 0; i < h.priv->multi_num &&
+ !ether_addr_equal(h.priv->ule_skb->data,
+ h.priv->multi_macs[i]); i++)
;
- if (i == priv->multi_num)
+ if (i == h.priv->multi_num)
drop = 1;
- } else if (priv->rx_mode != RX_MODE_ALL_MULTI)
+ } else if (h.priv->rx_mode != RX_MODE_ALL_MULTI)
drop = 1; /* no broadcast; */
/* else: all multicast mode: accept all multicast packets */
}
/* else: broadcast */
}
- else if (!ether_addr_equal(priv->ule_skb->data, dev->dev_addr))
+ else if (!ether_addr_equal(h.priv->ule_skb->data, h.dev->dev_addr))
drop = 1;
/* else: destination address matches the MAC address of our receiver device */
}
if (drop) {
#ifdef ULE_DEBUG
- netdev_dbg(dev, "Dropping SNDU: MAC destination address does not match: dest addr: %pM, dev addr: %pM\n",
- priv->ule_skb->data, dev->dev_addr);
+ netdev_dbg(h.dev, "Dropping SNDU: MAC destination address does not match: dest addr: %pM, h.dev addr: %pM\n",
+ h.priv->ule_skb->data, h.dev->dev_addr);
#endif
- dev_kfree_skb(priv->ule_skb);
+ dev_kfree_skb(h.priv->ule_skb);
goto sndu_done;
}
else
{
- skb_copy_from_linear_data(priv->ule_skb,
+ skb_copy_from_linear_data(h.priv->ule_skb,
dest_addr,
ETH_ALEN);
- skb_pull(priv->ule_skb, ETH_ALEN);
+ skb_pull(h.priv->ule_skb, ETH_ALEN);
}
}
/* Handle ULE Extension Headers. */
- if (priv->ule_sndu_type < ETH_P_802_3_MIN) {
+ if (h.priv->ule_sndu_type < ETH_P_802_3_MIN) {
/* There is an extension header. Handle it accordingly. */
- int l = handle_ule_extensions(priv);
+ int l = handle_ule_extensions(h.priv);
if (l < 0) {
/* Mandatory extension header unknown or TEST SNDU. Drop it. */
// pr_warn("Dropping SNDU, extension headers.\n" );
- dev_kfree_skb(priv->ule_skb);
+ dev_kfree_skb(h.priv->ule_skb);
goto sndu_done;
}
- skb_pull(priv->ule_skb, l);
+ skb_pull(h.priv->ule_skb, l);
}
/*
* Construct/assure correct ethernet header.
- * Note: in bridged mode (priv->ule_bridged !=
+ * Note: in bridged mode (h.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);
- eth_zero_addr(ethh->h_source);
+ if (!h.priv->ule_bridged) {
+ skb_push(h.priv->ule_skb, ETH_HLEN);
+ h.ethh = (struct ethhdr *)h.priv->ule_skb->data;
+ if (!h.priv->ule_dbit) {
+ /* dest_addr buffer is only valid if h.priv->ule_dbit == 0 */
+ memcpy(h.ethh->h_dest, dest_addr, ETH_ALEN);
+ eth_zero_addr(h.ethh->h_source);
}
else /* zeroize source and dest */
- memset( ethh, 0, ETH_ALEN*2 );
+ memset( h.ethh, 0, ETH_ALEN*2 );
- ethh->h_proto = htons(priv->ule_sndu_type);
+ h.ethh->h_proto = htons(h.priv->ule_sndu_type);
}
/* else: skb is in correct state; nothing to do. */
- priv->ule_bridged = 0;
+ h.priv->ule_bridged = 0;
/* Stuff into kernel's protocol stack. */
- priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev);
+ h.priv->ule_skb->protocol = dvb_net_eth_type_trans(h.priv->ule_skb, h.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; */
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += priv->ule_skb->len;
- netif_rx(priv->ule_skb);
+ /* if (h.priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST)
+ h.priv->ule_skb->pkt_type = PACKET_HOST; */
+ h.dev->stats.rx_packets++;
+ h.dev->stats.rx_bytes += h.priv->ule_skb->len;
+ netif_rx(h.priv->ule_skb);
}
sndu_done:
/* Prepare for next SNDU. */
- reset_ule(priv);
+ reset_ule(h.priv);
}
/* More data in current TS (look at the bytes following the CRC32)? */
- if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) {
+ if (h.ts_remain >= 2 && *((unsigned short *)h.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;
+ h.new_ts = 0;
+ h.priv->ule_skb = NULL;
+ h.priv->ule_sndu_type_1 = 0;
+ h.priv->ule_sndu_len = 0;
// pr_warn("More data in current TS: [%#x %#x %#x %#x]\n",
- // *(from_where + 0), *(from_where + 1),
- // *(from_where + 2), *(from_where + 3));
- // pr_warn("ts @ %p, stopped @ %p:\n", ts, from_where + 0);
- // hexdump(ts, 188);
+ // *(h.from_where + 0), *(h.from_where + 1),
+ // *(h.from_where + 2), *(h.from_where + 3));
+ // pr_warn("h.ts @ %p, stopped @ %p:\n", h.ts, h.from_where + 0);
+ // hexdump(h.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;
+ h.new_ts = 1;
+ h.ts += TS_SZ;
+ h.priv->ts_count++;
+ if (h.priv->ule_skb == NULL) {
+ h.priv->need_pusi = 1;
+ h.priv->ule_sndu_type_1 = 0;
+ h.priv->ule_sndu_len = 0;
}
}
} /* for all available TS cells */
projects / linux-beck.git / commitdiff