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ieee1394: eth1394: coding style
Adjust white space and line wraps. Remove unnecessary parentheses and braces, unused macros, and some of the more redundant comments. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter
parent
09d7a96f5a
commit
efbeccf174
@ -1,5 +1,5 @@
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/*
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* eth1394.c -- Ethernet driver for Linux IEEE-1394 Subsystem
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* eth1394.c -- IPv4 driver for Linux IEEE-1394 Subsystem
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*
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* Copyright (C) 2001-2003 Ben Collins <bcollins@debian.org>
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* 2000 Bonin Franck <boninf@free.fr>
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@ -22,10 +22,9 @@
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* This driver intends to support RFC 2734, which describes a method for
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* transporting IPv4 datagrams over IEEE-1394 serial busses. This driver
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* will ultimately support that method, but currently falls short in
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* several areas.
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/*
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* This driver intends to support RFC 2734, which describes a method for
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* transporting IPv4 datagrams over IEEE-1394 serial busses.
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*
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* TODO:
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* RFC 2734 related:
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@ -40,7 +39,6 @@
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* - Consider garbage collecting old partial datagrams after X amount of time
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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@ -84,10 +82,6 @@
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#define ETH1394_PRINT(level, dev_name, fmt, args...) \
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printk(level "%s: %s: " fmt, driver_name, dev_name, ## args)
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#define DEBUG(fmt, args...) \
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printk(KERN_ERR "%s:%s[%d]: " fmt "\n", driver_name, __FUNCTION__, __LINE__, ## args)
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#define TRACE() printk(KERN_ERR "%s:%s[%d] ---- TRACE\n", driver_name, __FUNCTION__, __LINE__)
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struct fragment_info {
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struct list_head list;
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int offset;
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@ -121,16 +115,14 @@ struct eth1394_node_ref {
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};
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struct eth1394_node_info {
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u16 maxpayload; /* Max payload */
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u8 sspd; /* Max speed */
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u16 maxpayload; /* max payload */
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u8 sspd; /* max speed */
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u64 fifo; /* FIFO address */
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struct pdg_list pdg; /* partial RX datagram lists */
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int dgl; /* Outgoing datagram label */
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int dgl; /* outgoing datagram label */
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};
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/* Our ieee1394 highlevel driver */
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#define ETH1394_DRIVER_NAME "eth1394"
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static const char driver_name[] = ETH1394_DRIVER_NAME;
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static const char driver_name[] = "eth1394";
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static struct kmem_cache *packet_task_cache;
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@ -144,9 +136,6 @@ static const int hdr_type_len[] = {
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sizeof(struct eth1394_sf_hdr)
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};
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/* Change this to IEEE1394_SPEED_S100 to make testing easier */
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#define ETH1394_SPEED_DEF IEEE1394_SPEED_MAX
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/* For now, this needs to be 1500, so that XP works with us */
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#define ETH1394_DATA_LEN ETH_DATA_LEN
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@ -159,7 +148,8 @@ MODULE_AUTHOR("Ben Collins (bcollins@debian.org)");
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MODULE_DESCRIPTION("IEEE 1394 IPv4 Driver (IPv4-over-1394 as per RFC 2734)");
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MODULE_LICENSE("GPL");
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/* The max_partial_datagrams parameter is the maximum number of fragmented
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/*
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* The max_partial_datagrams parameter is the maximum number of fragmented
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* datagrams per node that eth1394 will keep in memory. Providing an upper
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* bound allows us to limit the amount of memory that partial datagrams
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* consume in the event that some partial datagrams are never completed.
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@ -182,7 +172,6 @@ static void ether1394_header_cache_update(struct hh_cache *hh,
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unsigned char *haddr);
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static int ether1394_mac_addr(struct net_device *dev, void *p);
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static void purge_partial_datagram(struct list_head *old);
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static int ether1394_tx(struct sk_buff *skb, struct net_device *dev);
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static void ether1394_iso(struct hpsb_iso *iso);
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@ -207,13 +196,17 @@ static struct hpsb_highlevel eth1394_highlevel = {
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.host_reset = ether1394_host_reset,
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};
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static int ether1394_recv_init(struct net_device *dev)
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{
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struct eth1394_priv *priv = netdev_priv(dev);
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unsigned int iso_buf_size;
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/* FIXME: rawiso limits us to PAGE_SIZE */
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iso_buf_size = min((unsigned int)PAGE_SIZE,
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2 * (1U << (priv->host->csr.max_rec + 1)));
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priv->iso = hpsb_iso_recv_init(priv->host,
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ETHER1394_ISO_BUF_SIZE,
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ETHER1394_GASP_BUFFERS * iso_buf_size,
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ETHER1394_GASP_BUFFERS,
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priv->broadcast_channel,
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HPSB_ISO_DMA_PACKET_PER_BUFFER,
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@ -239,14 +232,11 @@ static int ether1394_open(struct net_device *dev)
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struct eth1394_priv *priv = netdev_priv(dev);
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int ret;
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/* Something bad happened, don't even try */
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if (priv->bc_state == ETHER1394_BC_ERROR) {
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/* we'll try again */
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ret = ether1394_recv_init(dev);
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if (ret)
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return ret;
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}
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netif_start_queue(dev);
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return 0;
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}
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@ -264,39 +254,44 @@ static struct net_device_stats *ether1394_stats (struct net_device *dev)
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return &(((struct eth1394_priv *)netdev_priv(dev))->stats);
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}
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/* What to do if we timeout. I think a host reset is probably in order, so
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* that's what we do. Should we increment the stat counters too? */
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/* FIXME: What to do if we timeout? I think a host reset is probably in order,
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* so that's what we do. Should we increment the stat counters too? */
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static void ether1394_tx_timeout(struct net_device *dev)
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{
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struct hpsb_host *host =
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((struct eth1394_priv *)netdev_priv(dev))->host;
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ETH1394_PRINT(KERN_ERR, dev->name, "Timeout, resetting host %s\n",
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((struct eth1394_priv *)netdev_priv(dev))->host->driver->name);
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highlevel_host_reset (((struct eth1394_priv *)netdev_priv(dev))->host);
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host->driver->name);
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highlevel_host_reset(host);
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netif_wake_queue(dev);
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}
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static int ether1394_change_mtu(struct net_device *dev, int new_mtu)
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{
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struct eth1394_priv *priv = netdev_priv(dev);
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int max_rec =
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((struct eth1394_priv *)netdev_priv(dev))->host->csr.max_rec;
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if ((new_mtu < 68) ||
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(new_mtu > min(ETH1394_DATA_LEN,
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(int)((1 << (priv->host->csr.max_rec + 1)) -
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(sizeof(union eth1394_hdr) +
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ETHER1394_GASP_OVERHEAD)))))
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if (new_mtu < 68 ||
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new_mtu > ETH1394_DATA_LEN ||
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new_mtu > (1 << (max_rec + 1)) - sizeof(union eth1394_hdr) -
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ETHER1394_GASP_OVERHEAD)
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return -EINVAL;
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dev->mtu = new_mtu;
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return 0;
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}
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static void purge_partial_datagram(struct list_head *old)
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{
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struct partial_datagram *pd = list_entry(old, struct partial_datagram, list);
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struct partial_datagram *pd;
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struct list_head *lh, *n;
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struct fragment_info *fi;
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pd = list_entry(old, struct partial_datagram, list);
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list_for_each_safe(lh, n, &pd->frag_info) {
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struct fragment_info *fi = list_entry(lh, struct fragment_info, list);
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fi = list_entry(lh, struct fragment_info, list);
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list_del(lh);
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kfree(fi);
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}
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@ -337,10 +332,10 @@ static struct eth1394_node_ref *eth1394_find_node_nodeid(struct list_head *inl,
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nodeid_t nodeid)
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{
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struct eth1394_node_ref *node;
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list_for_each_entry(node, inl, list) {
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list_for_each_entry(node, inl, list)
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if (node->ud->ne->nodeid == nodeid)
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return node;
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}
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return NULL;
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}
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@ -403,8 +398,9 @@ static int eth1394_remove(struct device *dev)
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priv = netdev_priv(hi->dev);
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old_node = eth1394_find_node(&priv->ip_node_list, ud);
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if (!old_node)
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return 0;
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if (old_node) {
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list_del(&old_node->list);
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kfree(old_node);
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@ -413,14 +409,12 @@ static int eth1394_remove(struct device *dev)
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spin_lock_irqsave(&node_info->pdg.lock, flags);
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/* The partial datagram list should be empty, but we'll just
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* make sure anyway... */
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list_for_each_safe(lh, n, &node_info->pdg.list) {
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list_for_each_safe(lh, n, &node_info->pdg.list)
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purge_partial_datagram(lh);
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}
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spin_unlock_irqrestore(&node_info->pdg.lock, flags);
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kfree(node_info);
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ud->device.driver_data = NULL;
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}
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return 0;
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}
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@ -438,8 +432,9 @@ static int eth1394_update(struct unit_directory *ud)
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priv = netdev_priv(hi->dev);
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node = eth1394_find_node(&priv->ip_node_list, ud);
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if (node)
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return 0;
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if (!node) {
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node = kmalloc(sizeof(*node),
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in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
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if (!node)
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@ -461,12 +456,9 @@ static int eth1394_update(struct unit_directory *ud)
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priv = netdev_priv(hi->dev);
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list_add_tail(&node->list, &priv->ip_node_list);
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}
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return 0;
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}
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static struct ieee1394_device_id eth1394_id_table[] = {
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{
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.match_flags = (IEEE1394_MATCH_SPECIFIER_ID |
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@ -480,7 +472,7 @@ static struct ieee1394_device_id eth1394_id_table[] = {
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MODULE_DEVICE_TABLE(ieee1394, eth1394_id_table);
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static struct hpsb_protocol_driver eth1394_proto_driver = {
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.name = ETH1394_DRIVER_NAME,
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.name = driver_name,
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.id_table = eth1394_id_table,
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.update = eth1394_update,
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.driver = {
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@ -489,7 +481,6 @@ static struct hpsb_protocol_driver eth1394_proto_driver = {
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},
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};
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static void ether1394_reset_priv(struct net_device *dev, int set_mtu)
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{
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unsigned long flags;
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@ -497,7 +488,6 @@ static void ether1394_reset_priv (struct net_device *dev, int set_mtu)
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struct eth1394_priv *priv = netdev_priv(dev);
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struct hpsb_host *host = priv->host;
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u64 guid = get_unaligned((u64 *)&(host->csr.rom->bus_info_data[3]));
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u16 maxpayload = 1 << (host->csr.max_rec + 1);
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int max_speed = IEEE1394_SPEED_MAX;
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spin_lock_irqsave(&priv->lock, flags);
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@ -511,12 +501,13 @@ static void ether1394_reset_priv (struct net_device *dev, int set_mtu)
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max_speed = host->speed[i];
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priv->bc_sspd = max_speed;
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/* We'll use our maxpayload as the default mtu */
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/* We'll use our maximum payload as the default MTU */
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if (set_mtu) {
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int max_payload = 1 << (host->csr.max_rec + 1);
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dev->mtu = min(ETH1394_DATA_LEN,
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(int)(maxpayload -
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(sizeof(union eth1394_hdr) +
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ETHER1394_GASP_OVERHEAD)));
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(int)(max_payload - sizeof(union eth1394_hdr) -
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ETHER1394_GASP_OVERHEAD));
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/* Set our hardware address while we're at it */
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memcpy(dev->dev_addr, &guid, sizeof(u64));
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@ -664,7 +655,7 @@ static void ether1394_remove_host (struct hpsb_host *host)
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free_netdev(hi->dev);
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}
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/* A reset has just arisen */
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/* A bus reset happened */
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static void ether1394_host_reset(struct hpsb_host *host)
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{
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struct eth1394_host_info *hi;
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@ -682,20 +673,19 @@ static void ether1394_host_reset (struct hpsb_host *host)
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return;
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dev = hi->dev;
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priv = (struct eth1394_priv *)netdev_priv(dev);
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priv = netdev_priv(dev);
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/* Reset our private host data, but not our mtu */
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/* Reset our private host data, but not our MTU */
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netif_stop_queue(dev);
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ether1394_reset_priv(dev, 0);
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list_for_each_entry(node, &priv->ip_node_list, list) {
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node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
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node_info = node->ud->device.driver_data;
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spin_lock_irqsave(&node_info->pdg.lock, flags);
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list_for_each_safe(lh, n, &node_info->pdg.list) {
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list_for_each_safe(lh, n, &node_info->pdg.list)
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purge_partial_datagram(lh);
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}
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INIT_LIST_HEAD(&(node_info->pdg.list));
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node_info->pdg.sz = 0;
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@ -711,7 +701,6 @@ static void ether1394_host_reset (struct hpsb_host *host)
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******************************************/
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/* These functions have been adapted from net/ethernet/eth.c */
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/* Create a fake MAC header for an arbitrary protocol layer.
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* saddr=NULL means use device source address
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* daddr=NULL means leave destination address (eg unresolved arp). */
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@ -719,13 +708,14 @@ static int ether1394_header(struct sk_buff *skb, struct net_device *dev,
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unsigned short type, void *daddr, void *saddr,
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unsigned len)
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{
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struct eth1394hdr *eth = (struct eth1394hdr *)skb_push(skb, ETH1394_HLEN);
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struct eth1394hdr *eth =
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(struct eth1394hdr *)skb_push(skb, ETH1394_HLEN);
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eth->h_proto = htons(type);
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if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
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memset(eth->h_dest, 0, dev->addr_len);
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return(dev->hard_header_len);
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return dev->hard_header_len;
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}
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if (daddr) {
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@ -734,10 +724,8 @@ static int ether1394_header(struct sk_buff *skb, struct net_device *dev,
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}
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return -dev->hard_header_len;
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}
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/* Rebuild the faked MAC header. This is called after an ARP
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* (or in future other address resolution) has completed on this
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* sk_buff. We now let ARP fill in the other fields.
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@ -769,17 +757,17 @@ static int ether1394_rebuild_header(struct sk_buff *skb)
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static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr)
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{
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struct net_device *dev = skb->dev;
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memcpy(haddr, dev->dev_addr, ETH1394_ALEN);
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return ETH1394_ALEN;
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}
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static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh)
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{
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unsigned short type = hh->hh_type;
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struct eth1394hdr *eth = (struct eth1394hdr*)(((u8*)hh->hh_data) +
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(16 - ETH1394_HLEN));
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struct net_device *dev = neigh->dev;
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struct eth1394hdr *eth =
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(struct eth1394hdr *)((u8 *)hh->hh_data + 16 - ETH1394_HLEN);
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if (type == htons(ETH_P_802_3))
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return -1;
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@ -796,7 +784,7 @@ static void ether1394_header_cache_update(struct hh_cache *hh,
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struct net_device *dev,
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unsigned char * haddr)
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{
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memcpy(((u8*)hh->hh_data) + (16 - ETH1394_HLEN), haddr, dev->addr_len);
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memcpy((u8 *)hh->hh_data + 16 - ETH1394_HLEN, haddr, dev->addr_len);
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}
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static int ether1394_mac_addr(struct net_device *dev, void *p)
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@ -809,8 +797,6 @@ static int ether1394_mac_addr(struct net_device *dev, void *p)
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return -EINVAL;
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}
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/******************************************
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* Datagram reception code
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******************************************/
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@ -858,12 +844,11 @@ static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev,
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u64 dest_hw;
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unsigned short ret = 0;
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/* Setup our hw addresses. We use these to build the
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* ethernet header. */
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/* Setup our hw addresses. We use these to build the ethernet header. */
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if (destid == (LOCAL_BUS | ALL_NODES))
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dest_hw = ~0ULL; /* broadcast */
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else
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dest_hw = cpu_to_be64((((u64)priv->host->csr.guid_hi) << 32) |
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dest_hw = cpu_to_be64((u64)priv->host->csr.guid_hi << 32 |
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priv->host->csr.guid_lo);
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/* If this is an ARP packet, convert it. First, we want to make
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@ -888,16 +873,17 @@ static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev,
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if (sspd > 5 || sspd < 0)
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sspd = 0;
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maxpayload = min(eth1394_speedto_maxpayload[sspd], (u16)(1 << (max_rec + 1)));
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maxpayload = min(eth1394_speedto_maxpayload[sspd],
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(u16)(1 << (max_rec + 1)));
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|
||||
guid = get_unaligned(&arp1394->s_uniq_id);
|
||||
node = eth1394_find_node_guid(&priv->ip_node_list,
|
||||
be64_to_cpu(guid));
|
||||
if (!node) {
|
||||
if (!node)
|
||||
return 0;
|
||||
}
|
||||
|
||||
node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
|
||||
node_info =
|
||||
(struct eth1394_node_info *)node->ud->device.driver_data;
|
||||
|
||||
/* Update our speed/payload/fifo_offset table */
|
||||
node_info->maxpayload = maxpayload;
|
||||
@ -949,10 +935,10 @@ static struct list_head *find_partial_datagram(struct list_head *pdgl, int dgl)
|
||||
{
|
||||
struct partial_datagram *pd;
|
||||
|
||||
list_for_each_entry(pd, pdgl, list) {
|
||||
list_for_each_entry(pd, pdgl, list)
|
||||
if (pd->dgl == dgl)
|
||||
return &pd->list;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -964,34 +950,34 @@ static int new_fragment(struct list_head *frag_info, int offset, int len)
|
||||
|
||||
list_for_each(lh, frag_info) {
|
||||
fi = list_entry(lh, struct fragment_info, list);
|
||||
if ((fi->offset + fi->len) == offset) {
|
||||
if (fi->offset + fi->len == offset) {
|
||||
/* The new fragment can be tacked on to the end */
|
||||
fi->len += len;
|
||||
/* Did the new fragment plug a hole? */
|
||||
fi2 = list_entry(lh->next, struct fragment_info, list);
|
||||
if ((fi->offset + fi->len) == fi2->offset) {
|
||||
if (fi->offset + fi->len == fi2->offset) {
|
||||
/* glue fragments together */
|
||||
fi->len += fi2->len;
|
||||
list_del(lh->next);
|
||||
kfree(fi2);
|
||||
}
|
||||
return 0;
|
||||
} else if ((offset + len) == fi->offset) {
|
||||
} else if (offset + len == fi->offset) {
|
||||
/* The new fragment can be tacked on to the beginning */
|
||||
fi->offset = offset;
|
||||
fi->len += len;
|
||||
/* Did the new fragment plug a hole? */
|
||||
fi2 = list_entry(lh->prev, struct fragment_info, list);
|
||||
if ((fi2->offset + fi2->len) == fi->offset) {
|
||||
if (fi2->offset + fi2->len == fi->offset) {
|
||||
/* glue fragments together */
|
||||
fi2->len += fi->len;
|
||||
list_del(lh);
|
||||
kfree(fi);
|
||||
}
|
||||
return 0;
|
||||
} else if (offset > (fi->offset + fi->len)) {
|
||||
} else if (offset > fi->offset + fi->len) {
|
||||
break;
|
||||
} else if ((offset + len) < fi->offset) {
|
||||
} else if (offset + len < fi->offset) {
|
||||
lh = lh->prev;
|
||||
break;
|
||||
}
|
||||
@ -1005,7 +991,6 @@ static int new_fragment(struct list_head *frag_info, int offset, int len)
|
||||
new->len = len;
|
||||
|
||||
list_add(&new->list, lh);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1044,25 +1029,23 @@ static int new_partial_datagram(struct net_device *dev, struct list_head *pdgl,
|
||||
memcpy(new->pbuf + frag_off, frag_buf, frag_len);
|
||||
|
||||
list_add(&new->list, pdgl);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int update_partial_datagram(struct list_head *pdgl, struct list_head *lh,
|
||||
char *frag_buf, int frag_off, int frag_len)
|
||||
{
|
||||
struct partial_datagram *pd = list_entry(lh, struct partial_datagram, list);
|
||||
struct partial_datagram *pd =
|
||||
list_entry(lh, struct partial_datagram, list);
|
||||
|
||||
if (new_fragment(&pd->frag_info, frag_off, frag_len) < 0) {
|
||||
if (new_fragment(&pd->frag_info, frag_off, frag_len) < 0)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
memcpy(pd->pbuf + frag_off, frag_buf, frag_len);
|
||||
|
||||
/* Move list entry to beginnig of list so that oldest partial
|
||||
* datagrams percolate to the end of the list */
|
||||
list_move(lh, pdgl);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1126,7 +1109,8 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
|
||||
return -1;
|
||||
}
|
||||
skb_reserve(skb, (dev->hard_header_len + 15) & ~15);
|
||||
memcpy(skb_put(skb, len - hdr_len), buf + hdr_len, len - hdr_len);
|
||||
memcpy(skb_put(skb, len - hdr_len), buf + hdr_len,
|
||||
len - hdr_len);
|
||||
ether_type = hdr->uf.ether_type;
|
||||
} else {
|
||||
/* A datagram fragment has been received, now the fun begins. */
|
||||
@ -1211,9 +1195,8 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
|
||||
|
||||
pd = list_entry(lh, struct partial_datagram, list);
|
||||
|
||||
if (hdr->common.lf == ETH1394_HDR_LF_FF) {
|
||||
if (hdr->common.lf == ETH1394_HDR_LF_FF)
|
||||
pd->ether_type = ether_type;
|
||||
}
|
||||
|
||||
if (is_datagram_complete(lh, dg_size)) {
|
||||
ether_type = pd->ether_type;
|
||||
@ -1240,8 +1223,8 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
|
||||
skb->protocol = ether1394_parse_encap(skb, dev, srcid, destid,
|
||||
ether_type);
|
||||
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
|
||||
if (!skb->protocol) {
|
||||
priv->stats.rx_errors++;
|
||||
priv->stats.rx_dropped++;
|
||||
@ -1319,14 +1302,14 @@ static void ether1394_iso(struct hpsb_iso *iso)
|
||||
buf = (char *)data + 8;
|
||||
len = info->len - 8;
|
||||
|
||||
specifier_id = (((be32_to_cpu(data[0]) & 0xffff) << 8) |
|
||||
((be32_to_cpu(data[1]) & 0xff000000) >> 24));
|
||||
specifier_id = (be32_to_cpu(data[0]) & 0xffff) << 8 |
|
||||
(be32_to_cpu(data[1]) & 0xff000000) >> 24;
|
||||
source_id = be32_to_cpu(data[0]) >> 16;
|
||||
|
||||
priv = netdev_priv(dev);
|
||||
|
||||
if (info->channel != (iso->host->csr.broadcast_channel & 0x3f) ||
|
||||
specifier_id != ETHER1394_GASP_SPECIFIER_ID) {
|
||||
if (info->channel != (iso->host->csr.broadcast_channel & 0x3f)
|
||||
|| specifier_id != ETHER1394_GASP_SPECIFIER_ID) {
|
||||
/* This packet is not for us */
|
||||
continue;
|
||||
}
|
||||
@ -1358,21 +1341,16 @@ static void ether1394_arp_to_1394arp(struct sk_buff *skb,
|
||||
struct net_device *dev)
|
||||
{
|
||||
struct eth1394_priv *priv = netdev_priv(dev);
|
||||
|
||||
struct arphdr *arp = (struct arphdr *)skb->data;
|
||||
unsigned char *arp_ptr = (unsigned char *)(arp + 1);
|
||||
struct eth1394_arp *arp1394 = (struct eth1394_arp *)skb->data;
|
||||
|
||||
/* Believe it or not, all that need to happen is sender IP get moved
|
||||
* and set hw_addr_len, max_rec, sspd, fifo_hi and fifo_lo. */
|
||||
arp1394->hw_addr_len = 16;
|
||||
arp1394->sip = *(u32*)(arp_ptr + ETH1394_ALEN);
|
||||
arp1394->max_rec = priv->host->csr.max_rec;
|
||||
arp1394->sspd = priv->host->csr.lnk_spd;
|
||||
arp1394->fifo_hi = htons(priv->local_fifo >> 32);
|
||||
arp1394->fifo_lo = htonl(priv->local_fifo & ~0x0);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
/* We need to encapsulate the standard header with our own. We use the
|
||||
@ -1382,7 +1360,8 @@ static unsigned int ether1394_encapsulate_prep(unsigned int max_payload,
|
||||
union eth1394_hdr *hdr,
|
||||
u16 dg_size, u16 dgl)
|
||||
{
|
||||
unsigned int adj_max_payload = max_payload - hdr_type_len[ETH1394_HDR_LF_UF];
|
||||
unsigned int adj_max_payload =
|
||||
max_payload - hdr_type_len[ETH1394_HDR_LF_UF];
|
||||
|
||||
/* Does it all fit in one packet? */
|
||||
if (dg_size <= adj_max_payload) {
|
||||
@ -1395,7 +1374,7 @@ static unsigned int ether1394_encapsulate_prep(unsigned int max_payload,
|
||||
hdr->ff.dgl = dgl;
|
||||
adj_max_payload = max_payload - hdr_type_len[ETH1394_HDR_LF_FF];
|
||||
}
|
||||
return((dg_size + (adj_max_payload - 1)) / adj_max_payload);
|
||||
return (dg_size + adj_max_payload - 1) / adj_max_payload;
|
||||
}
|
||||
|
||||
static unsigned int ether1394_encapsulate(struct sk_buff *skb,
|
||||
@ -1436,7 +1415,6 @@ static unsigned int ether1394_encapsulate(struct sk_buff *skb,
|
||||
bufhdr->words.word3 = htons(hdr->words.word3);
|
||||
bufhdr->words.word4 = 0;
|
||||
}
|
||||
|
||||
return min(max_payload, skb->len);
|
||||
}
|
||||
|
||||
@ -1461,7 +1439,7 @@ static int ether1394_prep_write_packet(struct hpsb_packet *p,
|
||||
p->data = NULL;
|
||||
|
||||
p->tcode = TCODE_WRITEB;
|
||||
p->header[1] = (host->node_id << 16) | (addr >> 32);
|
||||
p->header[1] = host->node_id << 16 | addr >> 32;
|
||||
p->header[2] = addr & 0xffffffff;
|
||||
|
||||
p->header_size = 16;
|
||||
@ -1472,12 +1450,12 @@ static int ether1394_prep_write_packet(struct hpsb_packet *p,
|
||||
"to node " NODE_BUS_FMT "\n", NODE_BUS_ARGS(host, node));
|
||||
return -1;
|
||||
}
|
||||
p->header[0] = (p->node_id << 16) | (p->tlabel << 10)
|
||||
| (1 << 8) | (TCODE_WRITEB << 4);
|
||||
p->header[0] =
|
||||
p->node_id << 16 | p->tlabel << 10 | 1 << 8 | TCODE_WRITEB << 4;
|
||||
|
||||
p->header[3] = tx_len << 16;
|
||||
p->data_size = (tx_len + 3) & ~3;
|
||||
p->data = (quadlet_t*)data;
|
||||
p->data = data;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1489,14 +1467,13 @@ static void ether1394_prep_gasp_packet(struct hpsb_packet *p,
|
||||
p->header_size = 4;
|
||||
p->tcode = TCODE_STREAM_DATA;
|
||||
|
||||
p->header[0] = (length << 16) | (3 << 14)
|
||||
| ((priv->broadcast_channel) << 8)
|
||||
| (TCODE_STREAM_DATA << 4);
|
||||
p->header[0] = length << 16 | 3 << 14 | priv->broadcast_channel << 8 |
|
||||
TCODE_STREAM_DATA << 4;
|
||||
p->data_size = length;
|
||||
p->data = ((quadlet_t*)skb->data) - 2;
|
||||
p->data[0] = cpu_to_be32((priv->host->node_id << 16) |
|
||||
p->data = (quadlet_t *)skb->data - 2;
|
||||
p->data[0] = cpu_to_be32(priv->host->node_id << 16 |
|
||||
ETHER1394_GASP_SPECIFIER_ID_HI);
|
||||
p->data[1] = cpu_to_be32((ETHER1394_GASP_SPECIFIER_ID_LO << 24) |
|
||||
p->data[1] = cpu_to_be32(ETHER1394_GASP_SPECIFIER_ID_LO << 24 |
|
||||
ETHER1394_GASP_VERSION);
|
||||
|
||||
/* Setting the node id to ALL_NODES (not LOCAL_BUS | ALL_NODES)
|
||||
@ -1525,7 +1502,7 @@ static int ether1394_send_packet(struct packet_task *ptask, unsigned int tx_len)
|
||||
return -1;
|
||||
|
||||
if (ptask->tx_type == ETH1394_GASP) {
|
||||
int length = tx_len + (2 * sizeof(quadlet_t));
|
||||
int length = tx_len + 2 * sizeof(quadlet_t);
|
||||
|
||||
ether1394_prep_gasp_packet(packet, priv, ptask->skb, length);
|
||||
} else if (ether1394_prep_write_packet(packet, priv->host,
|
||||
@ -1548,13 +1525,11 @@ static int ether1394_send_packet(struct packet_task *ptask, unsigned int tx_len)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Task function to be run when a datagram transmission is completed */
|
||||
static void ether1394_dg_complete(struct packet_task *ptask, int fail)
|
||||
{
|
||||
struct sk_buff *skb = ptask->skb;
|
||||
struct net_device *dev = skb->dev;
|
||||
struct eth1394_priv *priv = netdev_priv(dev);
|
||||
struct eth1394_priv *priv = netdev_priv(skb->dev);
|
||||
unsigned long flags;
|
||||
|
||||
/* Statistics */
|
||||
@ -1572,7 +1547,6 @@ static void ether1394_dg_complete(struct packet_task *ptask, int fail)
|
||||
kmem_cache_free(packet_task_cache, ptask);
|
||||
}
|
||||
|
||||
|
||||
/* Callback for when a packet has been sent and the status of that packet is
|
||||
* known */
|
||||
static void ether1394_complete_cb(void *__ptask)
|
||||
@ -1600,8 +1574,6 @@ static void ether1394_complete_cb(void *__ptask)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Transmit a packet (called by kernel) */
|
||||
static int ether1394_tx(struct sk_buff *skb, struct net_device *dev)
|
||||
{
|
||||
@ -1637,7 +1609,8 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
|
||||
}
|
||||
#endif
|
||||
|
||||
if ((skb = skb_share_check (skb, kmflags)) == NULL) {
|
||||
skb = skb_share_check(skb, kmflags);
|
||||
if (!skb) {
|
||||
ret = -ENOMEM;
|
||||
goto fail;
|
||||
}
|
||||
@ -1658,7 +1631,7 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
|
||||
tx_type = ETH1394_GASP;
|
||||
dest_node = LOCAL_BUS | ALL_NODES;
|
||||
max_payload = priv->bc_maxpayload - ETHER1394_GASP_OVERHEAD;
|
||||
BUG_ON(max_payload < (512 - ETHER1394_GASP_OVERHEAD));
|
||||
BUG_ON(max_payload < 512 - ETHER1394_GASP_OVERHEAD);
|
||||
dgl = priv->bc_dgl;
|
||||
if (max_payload < dg_size + hdr_type_len[ETH1394_HDR_LF_UF])
|
||||
priv->bc_dgl++;
|
||||
@ -1671,7 +1644,8 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
|
||||
ret = -EAGAIN;
|
||||
goto fail;
|
||||
}
|
||||
node_info = (struct eth1394_node_info*)node->ud->device.driver_data;
|
||||
node_info =
|
||||
(struct eth1394_node_info *)node->ud->device.driver_data;
|
||||
if (node_info->fifo == CSR1212_INVALID_ADDR_SPACE) {
|
||||
ret = -EAGAIN;
|
||||
goto fail;
|
||||
@ -1679,7 +1653,7 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
|
||||
|
||||
dest_node = node->ud->ne->nodeid;
|
||||
max_payload = node_info->maxpayload;
|
||||
BUG_ON(max_payload < (512 - ETHER1394_GASP_OVERHEAD));
|
||||
BUG_ON(max_payload < 512 - ETHER1394_GASP_OVERHEAD);
|
||||
|
||||
dgl = node_info->dgl;
|
||||
if (max_payload < dg_size + hdr_type_len[ETH1394_HDR_LF_UF])
|
||||
@ -1712,9 +1686,8 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev)
|
||||
|
||||
ptask->tx_type = tx_type;
|
||||
ptask->max_payload = max_payload;
|
||||
ptask->outstanding_pkts = ether1394_encapsulate_prep(max_payload, proto,
|
||||
&ptask->hdr, dg_size,
|
||||
dgl);
|
||||
ptask->outstanding_pkts = ether1394_encapsulate_prep(max_payload,
|
||||
proto, &ptask->hdr, dg_size, dgl);
|
||||
|
||||
/* Add the encapsulation header to the fragment */
|
||||
tx_len = ether1394_encapsulate(skb, max_payload, &ptask->hdr);
|
||||
@ -1742,11 +1715,11 @@ fail:
|
||||
return 0; /* returning non-zero causes serious problems */
|
||||
}
|
||||
|
||||
static void ether1394_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
|
||||
static void ether1394_get_drvinfo(struct net_device *dev,
|
||||
struct ethtool_drvinfo *info)
|
||||
{
|
||||
strcpy(info->driver, driver_name);
|
||||
/* FIXME XXX provide sane businfo */
|
||||
strcpy (info->bus_info, "ieee1394");
|
||||
strcpy(info->bus_info, "ieee1394"); /* FIXME provide more detail? */
|
||||
}
|
||||
|
||||
static struct ethtool_ops ethtool_ops = {
|
||||
@ -1755,12 +1728,11 @@ static struct ethtool_ops ethtool_ops = {
|
||||
|
||||
static int __init ether1394_init_module (void)
|
||||
{
|
||||
packet_task_cache = kmem_cache_create("packet_task", sizeof(struct packet_task),
|
||||
packet_task_cache = kmem_cache_create("packet_task",
|
||||
sizeof(struct packet_task),
|
||||
0, 0, NULL, NULL);
|
||||
|
||||
/* Register ourselves as a highlevel driver */
|
||||
hpsb_register_highlevel(ð1394_highlevel);
|
||||
|
||||
return hpsb_register_protocol(ð1394_proto_driver);
|
||||
}
|
||||
|
||||
|
||||
@ -25,6 +25,8 @@
|
||||
#define __ETH1394_H
|
||||
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/skbuff.h>
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#include "ieee1394.h"
|
||||
#include "ieee1394_types.h"
|
||||
@ -35,22 +37,15 @@
|
||||
|
||||
/* GASP identifier numbers for IPv4 over IEEE 1394 */
|
||||
#define ETHER1394_GASP_SPECIFIER_ID 0x00005E
|
||||
#define ETHER1394_GASP_SPECIFIER_ID_HI ((ETHER1394_GASP_SPECIFIER_ID >> 8) & 0xffff)
|
||||
#define ETHER1394_GASP_SPECIFIER_ID_LO (ETHER1394_GASP_SPECIFIER_ID & 0xff)
|
||||
#define ETHER1394_GASP_SPECIFIER_ID_HI ((0x00005E >> 8) & 0xffff)
|
||||
#define ETHER1394_GASP_SPECIFIER_ID_LO (0x00005E & 0xff)
|
||||
#define ETHER1394_GASP_VERSION 1
|
||||
|
||||
#define ETHER1394_GASP_OVERHEAD (2 * sizeof(quadlet_t)) /* GASP header overhead */
|
||||
#define ETHER1394_GASP_OVERHEAD (2 * sizeof(quadlet_t)) /* for GASP header */
|
||||
|
||||
#define ETHER1394_GASP_BUFFERS 16
|
||||
|
||||
/* rawiso buffer size - due to a limitation in rawiso, we must limit each
|
||||
* GASP buffer to be less than PAGE_SIZE. */
|
||||
#define ETHER1394_ISO_BUF_SIZE ETHER1394_GASP_BUFFERS * \
|
||||
min((unsigned int)PAGE_SIZE, \
|
||||
2 * (1U << (priv->host->csr.max_rec + 1)))
|
||||
|
||||
/* Node set == 64 */
|
||||
#define NODE_SET (ALL_NODES + 1)
|
||||
#define NODE_SET (ALL_NODES + 1) /* Node set == 64 */
|
||||
|
||||
enum eth1394_bc_states { ETHER1394_BC_ERROR,
|
||||
ETHER1394_BC_RUNNING,
|
||||
@ -86,19 +81,14 @@ struct eth1394hdr {
|
||||
unsigned short h_proto; /* packet type ID field */
|
||||
} __attribute__((packed));
|
||||
|
||||
#ifdef __KERNEL__
|
||||
#include <linux/skbuff.h>
|
||||
|
||||
static inline struct eth1394hdr *eth1394_hdr(const struct sk_buff *skb)
|
||||
{
|
||||
return (struct eth1394hdr *)skb_mac_header(skb);
|
||||
}
|
||||
#endif
|
||||
|
||||
typedef enum {ETH1394_GASP, ETH1394_WRREQ} eth1394_tx_type;
|
||||
|
||||
/* IP1394 headers */
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
/* Unfragmented */
|
||||
#if defined __BIG_ENDIAN_BITFIELD
|
||||
|
||||
Loading…
Reference in New Issue
Block a user