From efbeccf174bac803421a5f35076a17af47c9ce00 Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Mon, 2 Apr 2007 02:12:32 +0200 Subject: [PATCH] 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 --- drivers/ieee1394/eth1394.c | 426 +++++++++++++++++-------------------- drivers/ieee1394/eth1394.h | 24 +-- 2 files changed, 206 insertions(+), 244 deletions(-) diff --git a/drivers/ieee1394/eth1394.c b/drivers/ieee1394/eth1394.c index f7b47b981f..ce146b32f5 100644 --- a/drivers/ieee1394/eth1394.c +++ b/drivers/ieee1394/eth1394.c @@ -1,5 +1,5 @@ /* - * eth1394.c -- Ethernet driver for Linux IEEE-1394 Subsystem + * eth1394.c -- IPv4 driver for Linux IEEE-1394 Subsystem * * Copyright (C) 2001-2003 Ben Collins * 2000 Bonin Franck @@ -22,10 +22,9 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* This driver intends to support RFC 2734, which describes a method for - * transporting IPv4 datagrams over IEEE-1394 serial busses. This driver - * will ultimately support that method, but currently falls short in - * several areas. +/* + * This driver intends to support RFC 2734, which describes a method for + * transporting IPv4 datagrams over IEEE-1394 serial busses. * * TODO: * RFC 2734 related: @@ -40,7 +39,6 @@ * - Consider garbage collecting old partial datagrams after X amount of time */ - #include #include @@ -84,10 +82,6 @@ #define ETH1394_PRINT(level, dev_name, fmt, args...) \ printk(level "%s: %s: " fmt, driver_name, dev_name, ## args) -#define DEBUG(fmt, args...) \ - printk(KERN_ERR "%s:%s[%d]: " fmt "\n", driver_name, __FUNCTION__, __LINE__, ## args) -#define TRACE() printk(KERN_ERR "%s:%s[%d] ---- TRACE\n", driver_name, __FUNCTION__, __LINE__) - struct fragment_info { struct list_head list; int offset; @@ -105,9 +99,9 @@ struct partial_datagram { }; struct pdg_list { - struct list_head list; /* partial datagram list per node */ - unsigned int sz; /* partial datagram list size per node */ - spinlock_t lock; /* partial datagram lock */ + struct list_head list; /* partial datagram list per node */ + unsigned int sz; /* partial datagram list size per node */ + spinlock_t lock; /* partial datagram lock */ }; struct eth1394_host_info { @@ -121,16 +115,14 @@ struct eth1394_node_ref { }; struct eth1394_node_info { - u16 maxpayload; /* Max payload */ - u8 sspd; /* Max speed */ - u64 fifo; /* FIFO address */ - struct pdg_list pdg; /* partial RX datagram lists */ - int dgl; /* Outgoing datagram label */ + u16 maxpayload; /* max payload */ + u8 sspd; /* max speed */ + u64 fifo; /* FIFO address */ + struct pdg_list pdg; /* partial RX datagram lists */ + int dgl; /* outgoing datagram label */ }; -/* Our ieee1394 highlevel driver */ -#define ETH1394_DRIVER_NAME "eth1394" -static const char driver_name[] = ETH1394_DRIVER_NAME; +static const char driver_name[] = "eth1394"; static struct kmem_cache *packet_task_cache; @@ -138,15 +130,12 @@ static struct hpsb_highlevel eth1394_highlevel; /* Use common.lf to determine header len */ static const int hdr_type_len[] = { - sizeof (struct eth1394_uf_hdr), - sizeof (struct eth1394_ff_hdr), - sizeof (struct eth1394_sf_hdr), - sizeof (struct eth1394_sf_hdr) + sizeof(struct eth1394_uf_hdr), + sizeof(struct eth1394_ff_hdr), + sizeof(struct eth1394_sf_hdr), + sizeof(struct eth1394_sf_hdr) }; -/* Change this to IEEE1394_SPEED_S100 to make testing easier */ -#define ETH1394_SPEED_DEF IEEE1394_SPEED_MAX - /* For now, this needs to be 1500, so that XP works with us */ #define ETH1394_DATA_LEN ETH_DATA_LEN @@ -159,7 +148,8 @@ MODULE_AUTHOR("Ben Collins (bcollins@debian.org)"); MODULE_DESCRIPTION("IEEE 1394 IPv4 Driver (IPv4-over-1394 as per RFC 2734)"); MODULE_LICENSE("GPL"); -/* The max_partial_datagrams parameter is the maximum number of fragmented +/* + * The max_partial_datagrams parameter is the maximum number of fragmented * datagrams per node that eth1394 will keep in memory. Providing an upper * bound allows us to limit the amount of memory that partial datagrams * consume in the event that some partial datagrams are never completed. @@ -179,10 +169,9 @@ static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr); static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh); static void ether1394_header_cache_update(struct hh_cache *hh, struct net_device *dev, - unsigned char * haddr); + unsigned char *haddr); static int ether1394_mac_addr(struct net_device *dev, void *p); -static void purge_partial_datagram(struct list_head *old); static int ether1394_tx(struct sk_buff *skb, struct net_device *dev); static void ether1394_iso(struct hpsb_iso *iso); @@ -190,9 +179,9 @@ static struct ethtool_ops ethtool_ops; static int ether1394_write(struct hpsb_host *host, int srcid, int destid, quadlet_t *data, u64 addr, size_t len, u16 flags); -static void ether1394_add_host (struct hpsb_host *host); -static void ether1394_remove_host (struct hpsb_host *host); -static void ether1394_host_reset (struct hpsb_host *host); +static void ether1394_add_host(struct hpsb_host *host); +static void ether1394_remove_host(struct hpsb_host *host); +static void ether1394_host_reset(struct hpsb_host *host); /* Function for incoming 1394 packets */ static struct hpsb_address_ops addr_ops = { @@ -207,13 +196,17 @@ static struct hpsb_highlevel eth1394_highlevel = { .host_reset = ether1394_host_reset, }; - static int ether1394_recv_init(struct net_device *dev) { struct eth1394_priv *priv = netdev_priv(dev); + unsigned int iso_buf_size; + + /* FIXME: rawiso limits us to PAGE_SIZE */ + iso_buf_size = min((unsigned int)PAGE_SIZE, + 2 * (1U << (priv->host->csr.max_rec + 1))); priv->iso = hpsb_iso_recv_init(priv->host, - ETHER1394_ISO_BUF_SIZE, + ETHER1394_GASP_BUFFERS * iso_buf_size, ETHER1394_GASP_BUFFERS, priv->broadcast_channel, HPSB_ISO_DMA_PACKET_PER_BUFFER, @@ -239,64 +232,66 @@ static int ether1394_open(struct net_device *dev) struct eth1394_priv *priv = netdev_priv(dev); int ret; - /* Something bad happened, don't even try */ if (priv->bc_state == ETHER1394_BC_ERROR) { - /* we'll try again */ ret = ether1394_recv_init(dev); if (ret) return ret; } - - netif_start_queue (dev); + netif_start_queue(dev); return 0; } /* This is called after an "ifdown" */ -static int ether1394_stop (struct net_device *dev) +static int ether1394_stop(struct net_device *dev) { - netif_stop_queue (dev); + netif_stop_queue(dev); return 0; } /* Return statistics to the caller */ -static struct net_device_stats *ether1394_stats (struct net_device *dev) +static struct net_device_stats *ether1394_stats(struct net_device *dev) { return &(((struct eth1394_priv *)netdev_priv(dev))->stats); } -/* What to do if we timeout. I think a host reset is probably in order, so - * that's what we do. Should we increment the stat counters too? */ -static void ether1394_tx_timeout (struct net_device *dev) +/* FIXME: What to do if we timeout? I think a host reset is probably in order, + * so that's what we do. Should we increment the stat counters too? */ +static void ether1394_tx_timeout(struct net_device *dev) { - ETH1394_PRINT (KERN_ERR, dev->name, "Timeout, resetting host %s\n", - ((struct eth1394_priv *)netdev_priv(dev))->host->driver->name); - - highlevel_host_reset (((struct eth1394_priv *)netdev_priv(dev))->host); + struct hpsb_host *host = + ((struct eth1394_priv *)netdev_priv(dev))->host; - netif_wake_queue (dev); + ETH1394_PRINT(KERN_ERR, dev->name, "Timeout, resetting host %s\n", + host->driver->name); + highlevel_host_reset(host); + netif_wake_queue(dev); } static int ether1394_change_mtu(struct net_device *dev, int new_mtu) { - struct eth1394_priv *priv = netdev_priv(dev); + int max_rec = + ((struct eth1394_priv *)netdev_priv(dev))->host->csr.max_rec; - if ((new_mtu < 68) || - (new_mtu > min(ETH1394_DATA_LEN, - (int)((1 << (priv->host->csr.max_rec + 1)) - - (sizeof(union eth1394_hdr) + - ETHER1394_GASP_OVERHEAD))))) + if (new_mtu < 68 || + new_mtu > ETH1394_DATA_LEN || + new_mtu > (1 << (max_rec + 1)) - sizeof(union eth1394_hdr) - + ETHER1394_GASP_OVERHEAD) return -EINVAL; + dev->mtu = new_mtu; return 0; } static void purge_partial_datagram(struct list_head *old) { - struct partial_datagram *pd = list_entry(old, struct partial_datagram, list); + struct partial_datagram *pd; struct list_head *lh, *n; + struct fragment_info *fi; + + pd = list_entry(old, struct partial_datagram, list); list_for_each_safe(lh, n, &pd->frag_info) { - struct fragment_info *fi = list_entry(lh, struct fragment_info, list); + fi = list_entry(lh, struct fragment_info, list); list_del(lh); kfree(fi); } @@ -337,10 +332,10 @@ static struct eth1394_node_ref *eth1394_find_node_nodeid(struct list_head *inl, nodeid_t nodeid) { struct eth1394_node_ref *node; - list_for_each_entry(node, inl, list) { + + list_for_each_entry(node, inl, list) if (node->ud->ne->nodeid == nodeid) return node; - } return NULL; } @@ -403,24 +398,23 @@ static int eth1394_remove(struct device *dev) priv = netdev_priv(hi->dev); old_node = eth1394_find_node(&priv->ip_node_list, ud); + if (!old_node) + return 0; - if (old_node) { - list_del(&old_node->list); - kfree(old_node); + list_del(&old_node->list); + kfree(old_node); - node_info = (struct eth1394_node_info*)ud->device.driver_data; + node_info = (struct eth1394_node_info*)ud->device.driver_data; - spin_lock_irqsave(&node_info->pdg.lock, flags); - /* The partial datagram list should be empty, but we'll just - * make sure anyway... */ - list_for_each_safe(lh, n, &node_info->pdg.list) { - purge_partial_datagram(lh); - } - spin_unlock_irqrestore(&node_info->pdg.lock, flags); + spin_lock_irqsave(&node_info->pdg.lock, flags); + /* The partial datagram list should be empty, but we'll just + * make sure anyway... */ + list_for_each_safe(lh, n, &node_info->pdg.list) + purge_partial_datagram(lh); + spin_unlock_irqrestore(&node_info->pdg.lock, flags); - kfree(node_info); - ud->device.driver_data = NULL; - } + kfree(node_info); + ud->device.driver_data = NULL; return 0; } @@ -438,35 +432,33 @@ static int eth1394_update(struct unit_directory *ud) priv = netdev_priv(hi->dev); node = eth1394_find_node(&priv->ip_node_list, ud); + if (node) + return 0; - if (!node) { - node = kmalloc(sizeof(*node), - in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); - if (!node) - return -ENOMEM; - - node_info = kmalloc(sizeof(*node_info), - in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); - if (!node_info) { - kfree(node); - return -ENOMEM; - } + node = kmalloc(sizeof(*node), + in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); + if (!node) + return -ENOMEM; - spin_lock_init(&node_info->pdg.lock); - INIT_LIST_HEAD(&node_info->pdg.list); - node_info->pdg.sz = 0; + node_info = kmalloc(sizeof(*node_info), + in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); + if (!node_info) { + kfree(node); + return -ENOMEM; + } - ud->device.driver_data = node_info; - node->ud = ud; + spin_lock_init(&node_info->pdg.lock); + INIT_LIST_HEAD(&node_info->pdg.list); + node_info->pdg.sz = 0; - priv = netdev_priv(hi->dev); - list_add_tail(&node->list, &priv->ip_node_list); - } + ud->device.driver_data = node_info; + node->ud = ud; + priv = netdev_priv(hi->dev); + list_add_tail(&node->list, &priv->ip_node_list); return 0; } - static struct ieee1394_device_id eth1394_id_table[] = { { .match_flags = (IEEE1394_MATCH_SPECIFIER_ID | @@ -480,7 +472,7 @@ static struct ieee1394_device_id eth1394_id_table[] = { MODULE_DEVICE_TABLE(ieee1394, eth1394_id_table); static struct hpsb_protocol_driver eth1394_proto_driver = { - .name = ETH1394_DRIVER_NAME, + .name = driver_name, .id_table = eth1394_id_table, .update = eth1394_update, .driver = { @@ -489,18 +481,16 @@ static struct hpsb_protocol_driver eth1394_proto_driver = { }, }; - -static void ether1394_reset_priv (struct net_device *dev, int set_mtu) +static void ether1394_reset_priv(struct net_device *dev, int set_mtu) { unsigned long flags; int i; struct eth1394_priv *priv = netdev_priv(dev); struct hpsb_host *host = priv->host; - u64 guid = get_unaligned((u64*)&(host->csr.rom->bus_info_data[3])); - u16 maxpayload = 1 << (host->csr.max_rec + 1); + u64 guid = get_unaligned((u64 *)&(host->csr.rom->bus_info_data[3])); int max_speed = IEEE1394_SPEED_MAX; - spin_lock_irqsave (&priv->lock, flags); + spin_lock_irqsave(&priv->lock, flags); memset(priv->ud_list, 0, sizeof(struct node_entry*) * ALL_NODES); priv->bc_maxpayload = 512; @@ -511,23 +501,24 @@ static void ether1394_reset_priv (struct net_device *dev, int set_mtu) max_speed = host->speed[i]; priv->bc_sspd = max_speed; - /* We'll use our maxpayload as the default mtu */ + /* We'll use our maximum payload as the default MTU */ if (set_mtu) { + int max_payload = 1 << (host->csr.max_rec + 1); + dev->mtu = min(ETH1394_DATA_LEN, - (int)(maxpayload - - (sizeof(union eth1394_hdr) + - ETHER1394_GASP_OVERHEAD))); + (int)(max_payload - sizeof(union eth1394_hdr) - + ETHER1394_GASP_OVERHEAD)); /* Set our hardware address while we're at it */ memcpy(dev->dev_addr, &guid, sizeof(u64)); memset(dev->broadcast, 0xff, sizeof(u64)); } - spin_unlock_irqrestore (&priv->lock, flags); + spin_unlock_irqrestore(&priv->lock, flags); } /* This function is called right before register_netdev */ -static void ether1394_init_dev (struct net_device *dev) +static void ether1394_init_dev(struct net_device *dev) { /* Our functions */ dev->open = ether1394_open; @@ -553,7 +544,7 @@ static void ether1394_init_dev (struct net_device *dev) dev->hard_header_len = ETH1394_HLEN; dev->type = ARPHRD_IEEE1394; - ether1394_reset_priv (dev, 1); + ether1394_reset_priv(dev, 1); } /* @@ -561,7 +552,7 @@ static void ether1394_init_dev (struct net_device *dev) * when the module is installed. This is where we add all of our ethernet * devices. One for each host. */ -static void ether1394_add_host (struct hpsb_host *host) +static void ether1394_add_host(struct hpsb_host *host) { struct eth1394_host_info *hi = NULL; struct net_device *dev = NULL; @@ -593,7 +584,7 @@ static void ether1394_add_host (struct hpsb_host *host) "etherdevice for IEEE 1394 device %s-%d\n", host->driver->name, host->id); goto out; - } + } SET_MODULE_OWNER(dev); #if 0 @@ -616,7 +607,7 @@ static void ether1394_add_host (struct hpsb_host *host) "hostinfo for IEEE 1394 device %s-%d\n", host->driver->name, host->id); goto out; - } + } ether1394_init_dev(dev); @@ -647,7 +638,7 @@ out: } /* Remove a card from our list */ -static void ether1394_remove_host (struct hpsb_host *host) +static void ether1394_remove_host(struct hpsb_host *host) { struct eth1394_host_info *hi; struct eth1394_priv *priv; @@ -664,8 +655,8 @@ static void ether1394_remove_host (struct hpsb_host *host) free_netdev(hi->dev); } -/* A reset has just arisen */ -static void ether1394_host_reset (struct hpsb_host *host) +/* A bus reset happened */ +static void ether1394_host_reset(struct hpsb_host *host) { struct eth1394_host_info *hi; struct eth1394_priv *priv; @@ -682,20 +673,19 @@ static void ether1394_host_reset (struct hpsb_host *host) return; dev = hi->dev; - priv = (struct eth1394_priv *)netdev_priv(dev); + priv = netdev_priv(dev); - /* Reset our private host data, but not our mtu */ - netif_stop_queue (dev); - ether1394_reset_priv (dev, 0); + /* Reset our private host data, but not our MTU */ + netif_stop_queue(dev); + ether1394_reset_priv(dev, 0); list_for_each_entry(node, &priv->ip_node_list, list) { - node_info = (struct eth1394_node_info*)node->ud->device.driver_data; + node_info = node->ud->device.driver_data; spin_lock_irqsave(&node_info->pdg.lock, flags); - list_for_each_safe(lh, n, &node_info->pdg.list) { + list_for_each_safe(lh, n, &node_info->pdg.list) purge_partial_datagram(lh); - } INIT_LIST_HEAD(&(node_info->pdg.list)); node_info->pdg.sz = 0; @@ -703,7 +693,7 @@ static void ether1394_host_reset (struct hpsb_host *host) spin_unlock_irqrestore(&node_info->pdg.lock, flags); } - netif_wake_queue (dev); + netif_wake_queue(dev); } /****************************************** @@ -711,7 +701,6 @@ static void ether1394_host_reset (struct hpsb_host *host) ******************************************/ /* These functions have been adapted from net/ethernet/eth.c */ - /* Create a fake MAC header for an arbitrary protocol layer. * saddr=NULL means use device source address * daddr=NULL means leave destination address (eg unresolved arp). */ @@ -719,25 +708,24 @@ static int ether1394_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len) { - struct eth1394hdr *eth = (struct eth1394hdr *)skb_push(skb, ETH1394_HLEN); + struct eth1394hdr *eth = + (struct eth1394hdr *)skb_push(skb, ETH1394_HLEN); eth->h_proto = htons(type); - if (dev->flags & (IFF_LOOPBACK|IFF_NOARP)) { + if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) { memset(eth->h_dest, 0, dev->addr_len); - return(dev->hard_header_len); + return dev->hard_header_len; } if (daddr) { - memcpy(eth->h_dest,daddr,dev->addr_len); + memcpy(eth->h_dest, daddr, dev->addr_len); return dev->hard_header_len; } return -dev->hard_header_len; - } - /* Rebuild the faked MAC header. This is called after an ARP * (or in future other address resolution) has completed on this * sk_buff. We now let ARP fill in the other fields. @@ -754,7 +742,7 @@ static int ether1394_rebuild_header(struct sk_buff *skb) #ifdef CONFIG_INET case __constant_htons(ETH_P_IP): - return arp_find((unsigned char*)ð->h_dest, skb); + return arp_find((unsigned char *)ð->h_dest, skb); #endif default: ETH1394_PRINT(KERN_DEBUG, dev->name, @@ -769,17 +757,17 @@ static int ether1394_rebuild_header(struct sk_buff *skb) static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr) { struct net_device *dev = skb->dev; + memcpy(haddr, dev->dev_addr, ETH1394_ALEN); return ETH1394_ALEN; } - static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh) { unsigned short type = hh->hh_type; - struct eth1394hdr *eth = (struct eth1394hdr*)(((u8*)hh->hh_data) + - (16 - ETH1394_HLEN)); struct net_device *dev = neigh->dev; + struct eth1394hdr *eth = + (struct eth1394hdr *)((u8 *)hh->hh_data + 16 - ETH1394_HLEN); if (type == htons(ETH_P_802_3)) return -1; @@ -796,7 +784,7 @@ static void ether1394_header_cache_update(struct hh_cache *hh, struct net_device *dev, unsigned char * haddr) { - memcpy(((u8*)hh->hh_data) + (16 - ETH1394_HLEN), haddr, dev->addr_len); + memcpy((u8 *)hh->hh_data + 16 - ETH1394_HLEN, haddr, dev->addr_len); } static int ether1394_mac_addr(struct net_device *dev, void *p) @@ -807,9 +795,7 @@ static int ether1394_mac_addr(struct net_device *dev, void *p) /* Not going to allow setting the MAC address, we really need to use * the real one supplied by the hardware */ return -EINVAL; - } - - +} /****************************************** * Datagram reception code @@ -822,11 +808,11 @@ static u16 ether1394_type_trans(struct sk_buff *skb, struct net_device *dev) unsigned char *rawp; skb_reset_mac_header(skb); - skb_pull (skb, ETH1394_HLEN); + skb_pull(skb, ETH1394_HLEN); eth = eth1394_hdr(skb); if (*eth->h_dest & 1) { - if (memcmp(eth->h_dest, dev->broadcast, dev->addr_len)==0) + if (memcmp(eth->h_dest, dev->broadcast, dev->addr_len) == 0) skb->pkt_type = PACKET_BROADCAST; #if 0 else @@ -835,17 +821,17 @@ static u16 ether1394_type_trans(struct sk_buff *skb, struct net_device *dev) } else { if (memcmp(eth->h_dest, dev->dev_addr, dev->addr_len)) skb->pkt_type = PACKET_OTHERHOST; - } + } - if (ntohs (eth->h_proto) >= 1536) + if (ntohs(eth->h_proto) >= 1536) return eth->h_proto; rawp = skb->data; - if (*(unsigned short *)rawp == 0xFFFF) - return htons (ETH_P_802_3); + if (*(unsigned short *)rawp == 0xFFFF) + return htons(ETH_P_802_3); - return htons (ETH_P_802_2); + return htons(ETH_P_802_2); } /* Parse an encapsulated IP1394 header into an ethernet frame packet. @@ -858,23 +844,22 @@ static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev, u64 dest_hw; unsigned short ret = 0; - /* Setup our hw addresses. We use these to build the - * ethernet header. */ + /* Setup our hw addresses. We use these to build the ethernet header. */ if (destid == (LOCAL_BUS | ALL_NODES)) dest_hw = ~0ULL; /* broadcast */ else - dest_hw = cpu_to_be64((((u64)priv->host->csr.guid_hi) << 32) | + dest_hw = cpu_to_be64((u64)priv->host->csr.guid_hi << 32 | priv->host->csr.guid_lo); /* If this is an ARP packet, convert it. First, we want to make * use of some of the fields, since they tell us a little bit * about the sending machine. */ if (ether_type == htons(ETH_P_ARP)) { - struct eth1394_arp *arp1394 = (struct eth1394_arp*)skb->data; + struct eth1394_arp *arp1394 = (struct eth1394_arp *)skb->data; struct arphdr *arp = (struct arphdr *)skb->data; unsigned char *arp_ptr = (unsigned char *)(arp + 1); u64 fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32 | - ntohl(arp1394->fifo_lo); + ntohl(arp1394->fifo_lo); u8 max_rec = min(priv->host->csr.max_rec, (u8)(arp1394->max_rec)); int sspd = arp1394->sspd; @@ -888,16 +873,17 @@ static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev, if (sspd > 5 || sspd < 0) sspd = 0; - maxpayload = min(eth1394_speedto_maxpayload[sspd], (u16)(1 << (max_rec + 1))); + maxpayload = min(eth1394_speedto_maxpayload[sspd], + (u16)(1 << (max_rec + 1))); 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; @@ -916,7 +902,7 @@ static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev, arp->ar_hln = 8; arp_ptr += arp->ar_hln; /* skip over sender unique id */ - *(u32*)arp_ptr = arp1394->sip; /* move sender IP addr */ + *(u32 *)arp_ptr = arp1394->sip; /* move sender IP addr */ arp_ptr += arp->ar_pln; /* skip over sender IP addr */ if (arp->ar_op == htons(ARPOP_REQUEST)) @@ -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; } @@ -1107,7 +1090,7 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid, priv->ud_list[NODEID_TO_NODE(srcid)] = ud; } - node_info = (struct eth1394_node_info*)ud->device.driver_data; + node_info = (struct eth1394_node_info *)ud->device.driver_data; /* First, did we receive a fragmented or unfragmented datagram? */ hdr->words.word1 = ntohs(hdr->words.word1); @@ -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++; @@ -1313,20 +1296,20 @@ static void ether1394_iso(struct hpsb_iso *iso) for (i = 0; i < nready; i++) { struct hpsb_iso_packet_info *info = &iso->infos[(iso->first_packet + i) % iso->buf_packets]; - data = (quadlet_t*) (iso->data_buf.kvirt + info->offset); + data = (quadlet_t *)(iso->data_buf.kvirt + info->offset); /* skip over GASP header */ 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; + arp1394->fifo_hi = htons(priv->local_fifo >> 32); + arp1394->fifo_lo = htonl(priv->local_fifo & ~0x0); } /* 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, @@ -1407,7 +1386,7 @@ static unsigned int ether1394_encapsulate(struct sk_buff *skb, int hdrsz = hdr_type_len[ftype]; unsigned int adj_max_payload = max_payload - hdrsz; - switch(ftype) { + switch (ftype) { case ETH1394_HDR_LF_UF: bufhdr = (union eth1394_hdr *)skb_push(skb, hdrsz); bufhdr->words.word1 = htons(hdr->words.word1); @@ -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); } @@ -1455,13 +1433,13 @@ static struct hpsb_packet *ether1394_alloc_common_packet(struct hpsb_host *host) static int ether1394_prep_write_packet(struct hpsb_packet *p, struct hpsb_host *host, nodeid_t node, - u64 addr, void * data, int tx_len) + u64 addr, void *data, int tx_len) { p->node_id = node; 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) @@ -1600,10 +1574,8 @@ 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) +static int ether1394_tx(struct sk_buff *skb, struct net_device *dev) { gfp_t kmflags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; struct eth1394hdr *eth; @@ -1637,13 +1609,14 @@ 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; } /* Get rid of the fake eth1394 header, but save a pointer */ - eth = (struct eth1394hdr*)skb->data; + eth = (struct eth1394hdr *)skb->data; skb_pull(skb, ETH1394_HLEN); proto = eth->h_proto; @@ -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]) @@ -1689,7 +1663,7 @@ static int ether1394_tx (struct sk_buff *skb, struct net_device *dev) /* If this is an ARP packet, convert it */ if (proto == htons(ETH_P_ARP)) - ether1394_arp_to_1394arp (skb, dev); + ether1394_arp_to_1394arp(skb, dev); ptask->hdr.words.word1 = 0; ptask->hdr.words.word2 = 0; @@ -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); @@ -1731,10 +1704,10 @@ fail: if (skb != NULL) dev_kfree_skb(skb); - spin_lock_irqsave (&priv->lock, flags); + spin_lock_irqsave(&priv->lock, flags); priv->stats.tx_dropped++; priv->stats.tx_errors++; - spin_unlock_irqrestore (&priv->lock, flags); + spin_unlock_irqrestore(&priv->lock, flags); if (netif_queue_stopped(dev)) netif_wake_queue(dev); @@ -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->driver, driver_name); + 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); } diff --git a/drivers/ieee1394/eth1394.h b/drivers/ieee1394/eth1394.h index 2a88ee4663..a3439ee7cb 100644 --- a/drivers/ieee1394/eth1394.h +++ b/drivers/ieee1394/eth1394.h @@ -25,6 +25,8 @@ #define __ETH1394_H #include +#include +#include #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 +#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 - 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 /* Unfragmented */ #if defined __BIG_ENDIAN_BITFIELD -- 2.39.5