Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 2 | * eth1394.c -- IPv4 driver for Linux IEEE-1394 Subsystem |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2001-2003 Ben Collins <bcollins@debian.org> |
| 5 | * 2000 Bonin Franck <boninf@free.fr> |
| 6 | * 2003 Steve Kinneberg <kinnebergsteve@acmsystems.com> |
| 7 | * |
| 8 | * Mainly based on work by Emanuel Pirker and Andreas E. Bombe |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software Foundation, |
| 22 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | */ |
| 24 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 25 | /* |
| 26 | * This driver intends to support RFC 2734, which describes a method for |
| 27 | * transporting IPv4 datagrams over IEEE-1394 serial busses. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | * |
| 29 | * TODO: |
| 30 | * RFC 2734 related: |
| 31 | * - Add MCAP. Limited Multicast exists only to 224.0.0.1 and 224.0.0.2. |
| 32 | * |
| 33 | * Non-RFC 2734 related: |
| 34 | * - Handle fragmented skb's coming from the networking layer. |
| 35 | * - Move generic GASP reception to core 1394 code |
| 36 | * - Convert kmalloc/kfree for link fragments to use kmem_cache_* instead |
| 37 | * - Stability improvements |
| 38 | * - Performance enhancements |
| 39 | * - Consider garbage collecting old partial datagrams after X amount of time |
| 40 | */ |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/module.h> |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/kernel.h> |
| 45 | #include <linux/slab.h> |
| 46 | #include <linux/errno.h> |
| 47 | #include <linux/types.h> |
| 48 | #include <linux/delay.h> |
| 49 | #include <linux/init.h> |
| 50 | |
| 51 | #include <linux/netdevice.h> |
| 52 | #include <linux/inetdevice.h> |
| 53 | #include <linux/etherdevice.h> |
| 54 | #include <linux/if_arp.h> |
| 55 | #include <linux/if_ether.h> |
| 56 | #include <linux/ip.h> |
| 57 | #include <linux/in.h> |
| 58 | #include <linux/tcp.h> |
| 59 | #include <linux/skbuff.h> |
| 60 | #include <linux/bitops.h> |
| 61 | #include <linux/ethtool.h> |
| 62 | #include <asm/uaccess.h> |
| 63 | #include <asm/delay.h> |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 64 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #include <net/arp.h> |
| 66 | |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 67 | #include "config_roms.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #include "csr1212.h" |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 69 | #include "eth1394.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #include "highlevel.h" |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 71 | #include "ieee1394.h" |
| 72 | #include "ieee1394_core.h" |
| 73 | #include "ieee1394_hotplug.h" |
| 74 | #include "ieee1394_transactions.h" |
| 75 | #include "ieee1394_types.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #include "iso.h" |
| 77 | #include "nodemgr.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | #define ETH1394_PRINT_G(level, fmt, args...) \ |
| 80 | printk(level "%s: " fmt, driver_name, ## args) |
| 81 | |
| 82 | #define ETH1394_PRINT(level, dev_name, fmt, args...) \ |
| 83 | printk(level "%s: %s: " fmt, driver_name, dev_name, ## args) |
| 84 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | struct fragment_info { |
| 86 | struct list_head list; |
| 87 | int offset; |
| 88 | int len; |
| 89 | }; |
| 90 | |
| 91 | struct partial_datagram { |
| 92 | struct list_head list; |
| 93 | u16 dgl; |
| 94 | u16 dg_size; |
| 95 | u16 ether_type; |
| 96 | struct sk_buff *skb; |
| 97 | char *pbuf; |
| 98 | struct list_head frag_info; |
| 99 | }; |
| 100 | |
| 101 | struct pdg_list { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 102 | struct list_head list; /* partial datagram list per node */ |
| 103 | unsigned int sz; /* partial datagram list size per node */ |
| 104 | spinlock_t lock; /* partial datagram lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | }; |
| 106 | |
| 107 | struct eth1394_host_info { |
| 108 | struct hpsb_host *host; |
| 109 | struct net_device *dev; |
| 110 | }; |
| 111 | |
| 112 | struct eth1394_node_ref { |
| 113 | struct unit_directory *ud; |
| 114 | struct list_head list; |
| 115 | }; |
| 116 | |
| 117 | struct eth1394_node_info { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 118 | u16 maxpayload; /* max payload */ |
| 119 | u8 sspd; /* max speed */ |
| 120 | u64 fifo; /* FIFO address */ |
| 121 | struct pdg_list pdg; /* partial RX datagram lists */ |
| 122 | int dgl; /* outgoing datagram label */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | }; |
| 124 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 125 | static const char driver_name[] = "eth1394"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 127 | static struct kmem_cache *packet_task_cache; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | static struct hpsb_highlevel eth1394_highlevel; |
| 130 | |
| 131 | /* Use common.lf to determine header len */ |
| 132 | static const int hdr_type_len[] = { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 133 | sizeof(struct eth1394_uf_hdr), |
| 134 | sizeof(struct eth1394_ff_hdr), |
| 135 | sizeof(struct eth1394_sf_hdr), |
| 136 | sizeof(struct eth1394_sf_hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | }; |
| 138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | static const u16 eth1394_speedto_maxpayload[] = { |
| 140 | /* S100, S200, S400, S800, S1600, S3200 */ |
| 141 | 512, 1024, 2048, 4096, 4096, 4096 |
| 142 | }; |
| 143 | |
| 144 | MODULE_AUTHOR("Ben Collins (bcollins@debian.org)"); |
| 145 | MODULE_DESCRIPTION("IEEE 1394 IPv4 Driver (IPv4-over-1394 as per RFC 2734)"); |
| 146 | MODULE_LICENSE("GPL"); |
| 147 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 148 | /* |
| 149 | * The max_partial_datagrams parameter is the maximum number of fragmented |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | * datagrams per node that eth1394 will keep in memory. Providing an upper |
| 151 | * bound allows us to limit the amount of memory that partial datagrams |
| 152 | * consume in the event that some partial datagrams are never completed. |
| 153 | */ |
| 154 | static int max_partial_datagrams = 25; |
| 155 | module_param(max_partial_datagrams, int, S_IRUGO | S_IWUSR); |
| 156 | MODULE_PARM_DESC(max_partial_datagrams, |
| 157 | "Maximum number of partially received fragmented datagrams " |
| 158 | "(default = 25)."); |
| 159 | |
| 160 | |
| 161 | static int ether1394_header(struct sk_buff *skb, struct net_device *dev, |
| 162 | unsigned short type, void *daddr, void *saddr, |
| 163 | unsigned len); |
| 164 | static int ether1394_rebuild_header(struct sk_buff *skb); |
| 165 | static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr); |
| 166 | static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh); |
| 167 | static void ether1394_header_cache_update(struct hh_cache *hh, |
| 168 | struct net_device *dev, |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 169 | unsigned char *haddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | static int ether1394_mac_addr(struct net_device *dev, void *p); |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | static int ether1394_tx(struct sk_buff *skb, struct net_device *dev); |
| 173 | static void ether1394_iso(struct hpsb_iso *iso); |
| 174 | |
| 175 | static struct ethtool_ops ethtool_ops; |
| 176 | |
| 177 | static int ether1394_write(struct hpsb_host *host, int srcid, int destid, |
| 178 | quadlet_t *data, u64 addr, size_t len, u16 flags); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 179 | static void ether1394_add_host(struct hpsb_host *host); |
| 180 | static void ether1394_remove_host(struct hpsb_host *host); |
| 181 | static void ether1394_host_reset(struct hpsb_host *host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | /* Function for incoming 1394 packets */ |
| 184 | static struct hpsb_address_ops addr_ops = { |
| 185 | .write = ether1394_write, |
| 186 | }; |
| 187 | |
| 188 | /* Ieee1394 highlevel driver functions */ |
| 189 | static struct hpsb_highlevel eth1394_highlevel = { |
| 190 | .name = driver_name, |
| 191 | .add_host = ether1394_add_host, |
| 192 | .remove_host = ether1394_remove_host, |
| 193 | .host_reset = ether1394_host_reset, |
| 194 | }; |
| 195 | |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 196 | static int ether1394_recv_init(struct eth1394_priv *priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 198 | unsigned int iso_buf_size; |
| 199 | |
| 200 | /* FIXME: rawiso limits us to PAGE_SIZE */ |
| 201 | iso_buf_size = min((unsigned int)PAGE_SIZE, |
| 202 | 2 * (1U << (priv->host->csr.max_rec + 1))); |
Jean Delvare | 09d7a96 | 2007-04-01 10:06:33 +0200 | [diff] [blame] | 203 | |
| 204 | priv->iso = hpsb_iso_recv_init(priv->host, |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 205 | ETHER1394_GASP_BUFFERS * iso_buf_size, |
Jean Delvare | 09d7a96 | 2007-04-01 10:06:33 +0200 | [diff] [blame] | 206 | ETHER1394_GASP_BUFFERS, |
| 207 | priv->broadcast_channel, |
| 208 | HPSB_ISO_DMA_PACKET_PER_BUFFER, |
| 209 | 1, ether1394_iso); |
| 210 | if (priv->iso == NULL) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 211 | ETH1394_PRINT_G(KERN_ERR, "Failed to allocate IR context\n"); |
Jean Delvare | 09d7a96 | 2007-04-01 10:06:33 +0200 | [diff] [blame] | 212 | priv->bc_state = ETHER1394_BC_ERROR; |
| 213 | return -EAGAIN; |
| 214 | } |
| 215 | |
| 216 | if (hpsb_iso_recv_start(priv->iso, -1, (1 << 3), -1) < 0) |
| 217 | priv->bc_state = ETHER1394_BC_STOPPED; |
| 218 | else |
| 219 | priv->bc_state = ETHER1394_BC_RUNNING; |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | /* This is called after an "ifup" */ |
| 224 | static int ether1394_open(struct net_device *dev) |
| 225 | { |
| 226 | struct eth1394_priv *priv = netdev_priv(dev); |
| 227 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | if (priv->bc_state == ETHER1394_BC_ERROR) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 230 | ret = ether1394_recv_init(priv); |
Jean Delvare | 09d7a96 | 2007-04-01 10:06:33 +0200 | [diff] [blame] | 231 | if (ret) |
| 232 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 234 | netif_start_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | /* This is called after an "ifdown" */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 239 | static int ether1394_stop(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 241 | netif_stop_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | return 0; |
| 243 | } |
| 244 | |
| 245 | /* Return statistics to the caller */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 246 | static struct net_device_stats *ether1394_stats(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | { |
| 248 | return &(((struct eth1394_priv *)netdev_priv(dev))->stats); |
| 249 | } |
| 250 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 251 | /* FIXME: What to do if we timeout? I think a host reset is probably in order, |
| 252 | * so that's what we do. Should we increment the stat counters too? */ |
| 253 | static void ether1394_tx_timeout(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 255 | struct hpsb_host *host = |
| 256 | ((struct eth1394_priv *)netdev_priv(dev))->host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
Stefan Richter | 246a5fd | 2007-04-02 02:16:40 +0200 | [diff] [blame] | 258 | ETH1394_PRINT(KERN_ERR, dev->name, "Timeout, resetting host\n"); |
| 259 | ether1394_host_reset(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
| 261 | |
Stefan Richter | 17bab40 | 2007-04-03 23:55:40 +0200 | [diff] [blame^] | 262 | static inline int ether1394_max_mtu(struct hpsb_host* host) |
| 263 | { |
| 264 | return (1 << (host->csr.max_rec + 1)) |
| 265 | - sizeof(union eth1394_hdr) - ETHER1394_GASP_OVERHEAD; |
| 266 | } |
| 267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | static int ether1394_change_mtu(struct net_device *dev, int new_mtu) |
| 269 | { |
Stefan Richter | 17bab40 | 2007-04-03 23:55:40 +0200 | [diff] [blame^] | 270 | int max_mtu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Stefan Richter | 17bab40 | 2007-04-03 23:55:40 +0200 | [diff] [blame^] | 272 | if (new_mtu < 68) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | return -EINVAL; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 274 | |
Stefan Richter | 17bab40 | 2007-04-03 23:55:40 +0200 | [diff] [blame^] | 275 | max_mtu = ether1394_max_mtu( |
| 276 | ((struct eth1394_priv *)netdev_priv(dev))->host); |
| 277 | if (new_mtu > max_mtu) { |
| 278 | ETH1394_PRINT(KERN_INFO, dev->name, |
| 279 | "Local node constrains MTU to %d\n", max_mtu); |
| 280 | return -ERANGE; |
| 281 | } |
| 282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | dev->mtu = new_mtu; |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static void purge_partial_datagram(struct list_head *old) |
| 288 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 289 | struct partial_datagram *pd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | struct list_head *lh, *n; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 291 | struct fragment_info *fi; |
| 292 | |
| 293 | pd = list_entry(old, struct partial_datagram, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
| 295 | list_for_each_safe(lh, n, &pd->frag_info) { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 296 | fi = list_entry(lh, struct fragment_info, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | list_del(lh); |
| 298 | kfree(fi); |
| 299 | } |
| 300 | list_del(old); |
| 301 | kfree_skb(pd->skb); |
| 302 | kfree(pd); |
| 303 | } |
| 304 | |
| 305 | /****************************************** |
| 306 | * 1394 bus activity functions |
| 307 | ******************************************/ |
| 308 | |
| 309 | static struct eth1394_node_ref *eth1394_find_node(struct list_head *inl, |
| 310 | struct unit_directory *ud) |
| 311 | { |
| 312 | struct eth1394_node_ref *node; |
| 313 | |
| 314 | list_for_each_entry(node, inl, list) |
| 315 | if (node->ud == ud) |
| 316 | return node; |
| 317 | |
| 318 | return NULL; |
| 319 | } |
| 320 | |
| 321 | static struct eth1394_node_ref *eth1394_find_node_guid(struct list_head *inl, |
| 322 | u64 guid) |
| 323 | { |
| 324 | struct eth1394_node_ref *node; |
| 325 | |
| 326 | list_for_each_entry(node, inl, list) |
| 327 | if (node->ud->ne->guid == guid) |
| 328 | return node; |
| 329 | |
| 330 | return NULL; |
| 331 | } |
| 332 | |
| 333 | static struct eth1394_node_ref *eth1394_find_node_nodeid(struct list_head *inl, |
| 334 | nodeid_t nodeid) |
| 335 | { |
| 336 | struct eth1394_node_ref *node; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 337 | |
| 338 | list_for_each_entry(node, inl, list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | if (node->ud->ne->nodeid == nodeid) |
| 340 | return node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
| 342 | return NULL; |
| 343 | } |
| 344 | |
Stefan Richter | d06c1dd | 2007-04-02 02:14:45 +0200 | [diff] [blame] | 345 | static int eth1394_new_node(struct eth1394_host_info *hi, |
| 346 | struct unit_directory *ud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | struct eth1394_priv *priv; |
| 349 | struct eth1394_node_ref *new_node; |
| 350 | struct eth1394_node_info *node_info; |
| 351 | |
Stefan Richter | 5e7abcc | 2007-04-02 02:13:51 +0200 | [diff] [blame] | 352 | new_node = kmalloc(sizeof(*new_node), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | if (!new_node) |
| 354 | return -ENOMEM; |
| 355 | |
Stefan Richter | 5e7abcc | 2007-04-02 02:13:51 +0200 | [diff] [blame] | 356 | node_info = kmalloc(sizeof(*node_info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | if (!node_info) { |
| 358 | kfree(new_node); |
| 359 | return -ENOMEM; |
| 360 | } |
| 361 | |
| 362 | spin_lock_init(&node_info->pdg.lock); |
| 363 | INIT_LIST_HEAD(&node_info->pdg.list); |
| 364 | node_info->pdg.sz = 0; |
Ben Collins | 6737231 | 2006-06-12 18:15:31 -0400 | [diff] [blame] | 365 | node_info->fifo = CSR1212_INVALID_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | ud->device.driver_data = node_info; |
| 368 | new_node->ud = ud; |
| 369 | |
| 370 | priv = netdev_priv(hi->dev); |
| 371 | list_add_tail(&new_node->list, &priv->ip_node_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | return 0; |
| 373 | } |
| 374 | |
Stefan Richter | d06c1dd | 2007-04-02 02:14:45 +0200 | [diff] [blame] | 375 | static int eth1394_probe(struct device *dev) |
| 376 | { |
| 377 | struct unit_directory *ud; |
| 378 | struct eth1394_host_info *hi; |
| 379 | |
| 380 | ud = container_of(dev, struct unit_directory, device); |
| 381 | hi = hpsb_get_hostinfo(ð1394_highlevel, ud->ne->host); |
| 382 | if (!hi) |
| 383 | return -ENOENT; |
| 384 | |
| 385 | return eth1394_new_node(hi, ud); |
| 386 | } |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | static int eth1394_remove(struct device *dev) |
| 389 | { |
| 390 | struct unit_directory *ud; |
| 391 | struct eth1394_host_info *hi; |
| 392 | struct eth1394_priv *priv; |
| 393 | struct eth1394_node_ref *old_node; |
| 394 | struct eth1394_node_info *node_info; |
| 395 | struct list_head *lh, *n; |
| 396 | unsigned long flags; |
| 397 | |
| 398 | ud = container_of(dev, struct unit_directory, device); |
| 399 | hi = hpsb_get_hostinfo(ð1394_highlevel, ud->ne->host); |
| 400 | if (!hi) |
| 401 | return -ENOENT; |
| 402 | |
| 403 | priv = netdev_priv(hi->dev); |
| 404 | |
| 405 | old_node = eth1394_find_node(&priv->ip_node_list, ud); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 406 | if (!old_node) |
| 407 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 409 | list_del(&old_node->list); |
| 410 | kfree(old_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 412 | node_info = (struct eth1394_node_info*)ud->device.driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 414 | spin_lock_irqsave(&node_info->pdg.lock, flags); |
| 415 | /* The partial datagram list should be empty, but we'll just |
| 416 | * make sure anyway... */ |
| 417 | list_for_each_safe(lh, n, &node_info->pdg.list) |
| 418 | purge_partial_datagram(lh); |
| 419 | spin_unlock_irqrestore(&node_info->pdg.lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 421 | kfree(node_info); |
| 422 | ud->device.driver_data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | static int eth1394_update(struct unit_directory *ud) |
| 427 | { |
| 428 | struct eth1394_host_info *hi; |
| 429 | struct eth1394_priv *priv; |
| 430 | struct eth1394_node_ref *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | hi = hpsb_get_hostinfo(ð1394_highlevel, ud->ne->host); |
| 433 | if (!hi) |
| 434 | return -ENOENT; |
| 435 | |
| 436 | priv = netdev_priv(hi->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | node = eth1394_find_node(&priv->ip_node_list, ud); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 438 | if (node) |
| 439 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
Stefan Richter | d06c1dd | 2007-04-02 02:14:45 +0200 | [diff] [blame] | 441 | return eth1394_new_node(hi, ud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | } |
| 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | static struct ieee1394_device_id eth1394_id_table[] = { |
| 445 | { |
| 446 | .match_flags = (IEEE1394_MATCH_SPECIFIER_ID | |
| 447 | IEEE1394_MATCH_VERSION), |
| 448 | .specifier_id = ETHER1394_GASP_SPECIFIER_ID, |
| 449 | .version = ETHER1394_GASP_VERSION, |
| 450 | }, |
| 451 | {} |
| 452 | }; |
| 453 | |
| 454 | MODULE_DEVICE_TABLE(ieee1394, eth1394_id_table); |
| 455 | |
| 456 | static struct hpsb_protocol_driver eth1394_proto_driver = { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 457 | .name = driver_name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | .id_table = eth1394_id_table, |
| 459 | .update = eth1394_update, |
| 460 | .driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | .probe = eth1394_probe, |
| 462 | .remove = eth1394_remove, |
| 463 | }, |
| 464 | }; |
| 465 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 466 | static void ether1394_reset_priv(struct net_device *dev, int set_mtu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | { |
| 468 | unsigned long flags; |
| 469 | int i; |
| 470 | struct eth1394_priv *priv = netdev_priv(dev); |
| 471 | struct hpsb_host *host = priv->host; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 472 | u64 guid = get_unaligned((u64 *)&(host->csr.rom->bus_info_data[3])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | int max_speed = IEEE1394_SPEED_MAX; |
| 474 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 475 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Stefan Richter | 027611b | 2007-04-02 02:15:21 +0200 | [diff] [blame] | 477 | memset(priv->ud_list, 0, sizeof(priv->ud_list)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | priv->bc_maxpayload = 512; |
| 479 | |
| 480 | /* Determine speed limit */ |
| 481 | for (i = 0; i < host->node_count; i++) |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 482 | if (max_speed > host->speed[i]) |
| 483 | max_speed = host->speed[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | priv->bc_sspd = max_speed; |
| 485 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | if (set_mtu) { |
Stefan Richter | 17bab40 | 2007-04-03 23:55:40 +0200 | [diff] [blame^] | 487 | /* Use the RFC 2734 default 1500 octets or the maximum payload |
| 488 | * as initial MTU */ |
| 489 | dev->mtu = min(1500, ether1394_max_mtu(host)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | |
| 491 | /* Set our hardware address while we're at it */ |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 492 | memcpy(dev->dev_addr, &guid, sizeof(u64)); |
| 493 | memset(dev->broadcast, 0xff, sizeof(u64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 496 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | /* This function is called right before register_netdev */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 500 | static void ether1394_init_dev(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | { |
| 502 | /* Our functions */ |
| 503 | dev->open = ether1394_open; |
| 504 | dev->stop = ether1394_stop; |
| 505 | dev->hard_start_xmit = ether1394_tx; |
| 506 | dev->get_stats = ether1394_stats; |
| 507 | dev->tx_timeout = ether1394_tx_timeout; |
| 508 | dev->change_mtu = ether1394_change_mtu; |
| 509 | |
| 510 | dev->hard_header = ether1394_header; |
| 511 | dev->rebuild_header = ether1394_rebuild_header; |
| 512 | dev->hard_header_cache = ether1394_header_cache; |
| 513 | dev->header_cache_update= ether1394_header_cache_update; |
| 514 | dev->hard_header_parse = ether1394_header_parse; |
| 515 | dev->set_mac_address = ether1394_mac_addr; |
| 516 | SET_ETHTOOL_OPS(dev, ðtool_ops); |
| 517 | |
| 518 | /* Some constants */ |
| 519 | dev->watchdog_timeo = ETHER1394_TIMEOUT; |
| 520 | dev->flags = IFF_BROADCAST | IFF_MULTICAST; |
| 521 | dev->features = NETIF_F_HIGHDMA; |
| 522 | dev->addr_len = ETH1394_ALEN; |
| 523 | dev->hard_header_len = ETH1394_HLEN; |
| 524 | dev->type = ARPHRD_IEEE1394; |
| 525 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 526 | ether1394_reset_priv(dev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | /* |
| 530 | * This function is called every time a card is found. It is generally called |
| 531 | * when the module is installed. This is where we add all of our ethernet |
| 532 | * devices. One for each host. |
| 533 | */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 534 | static void ether1394_add_host(struct hpsb_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | { |
| 536 | struct eth1394_host_info *hi = NULL; |
| 537 | struct net_device *dev = NULL; |
| 538 | struct eth1394_priv *priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | u64 fifo_addr; |
| 540 | |
Stefan Richter | 70093cf | 2007-03-27 01:36:50 +0200 | [diff] [blame] | 541 | if (hpsb_config_rom_ip1394_add(host) != 0) { |
| 542 | ETH1394_PRINT_G(KERN_ERR, "Can't add IP-over-1394 ROM entry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | return; |
Stefan Richter | 70093cf | 2007-03-27 01:36:50 +0200 | [diff] [blame] | 544 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | |
Ben Collins | 6737231 | 2006-06-12 18:15:31 -0400 | [diff] [blame] | 546 | fifo_addr = hpsb_allocate_and_register_addrspace( |
| 547 | ð1394_highlevel, host, &addr_ops, |
| 548 | ETHER1394_REGION_ADDR_LEN, ETHER1394_REGION_ADDR_LEN, |
| 549 | CSR1212_INVALID_ADDR_SPACE, CSR1212_INVALID_ADDR_SPACE); |
Stefan Richter | 157188c | 2007-02-10 23:56:38 +0100 | [diff] [blame] | 550 | if (fifo_addr == CSR1212_INVALID_ADDR_SPACE) { |
| 551 | ETH1394_PRINT_G(KERN_ERR, "Cannot register CSR space\n"); |
Stefan Richter | 70093cf | 2007-03-27 01:36:50 +0200 | [diff] [blame] | 552 | hpsb_config_rom_ip1394_remove(host); |
Stefan Richter | 157188c | 2007-02-10 23:56:38 +0100 | [diff] [blame] | 553 | return; |
| 554 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | /* We should really have our own alloc_hpsbdev() function in |
| 557 | * net_init.c instead of calling the one for ethernet then hijacking |
| 558 | * it for ourselves. That way we'd be a real networking device. */ |
| 559 | dev = alloc_etherdev(sizeof (struct eth1394_priv)); |
| 560 | |
| 561 | if (dev == NULL) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 562 | ETH1394_PRINT_G(KERN_ERR, "Out of memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | goto out; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 564 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
| 566 | SET_MODULE_OWNER(dev); |
Stefan Richter | 7a9eeb2 | 2007-03-20 22:43:22 +0100 | [diff] [blame] | 567 | #if 0 |
| 568 | /* FIXME - Is this the correct parent device anyway? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | SET_NETDEV_DEV(dev, &host->device); |
Stefan Richter | 7a9eeb2 | 2007-03-20 22:43:22 +0100 | [diff] [blame] | 570 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
| 572 | priv = netdev_priv(dev); |
| 573 | |
| 574 | INIT_LIST_HEAD(&priv->ip_node_list); |
| 575 | |
| 576 | spin_lock_init(&priv->lock); |
| 577 | priv->host = host; |
| 578 | priv->local_fifo = fifo_addr; |
| 579 | |
| 580 | hi = hpsb_create_hostinfo(ð1394_highlevel, host, sizeof(*hi)); |
| 581 | |
| 582 | if (hi == NULL) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 583 | ETH1394_PRINT_G(KERN_ERR, "Out of memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | goto out; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 585 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | |
| 587 | ether1394_init_dev(dev); |
| 588 | |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 589 | if (register_netdev(dev)) { |
| 590 | ETH1394_PRINT_G(KERN_ERR, "Cannot register the driver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | goto out; |
| 592 | } |
| 593 | |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 594 | ETH1394_PRINT(KERN_INFO, dev->name, "IPv4 over IEEE 1394 (fw-host%d)\n", |
| 595 | host->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
| 597 | hi->host = host; |
| 598 | hi->dev = dev; |
| 599 | |
| 600 | /* Ignore validity in hopes that it will be set in the future. It'll |
| 601 | * be checked when the eth device is opened. */ |
| 602 | priv->broadcast_channel = host->csr.broadcast_channel & 0x3f; |
| 603 | |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 604 | ether1394_recv_init(priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | out: |
Stefan Richter | 157188c | 2007-02-10 23:56:38 +0100 | [diff] [blame] | 607 | if (dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | free_netdev(dev); |
| 609 | if (hi) |
| 610 | hpsb_destroy_hostinfo(ð1394_highlevel, host); |
Stefan Richter | 157188c | 2007-02-10 23:56:38 +0100 | [diff] [blame] | 611 | hpsb_unregister_addrspace(ð1394_highlevel, host, fifo_addr); |
Stefan Richter | 70093cf | 2007-03-27 01:36:50 +0200 | [diff] [blame] | 612 | hpsb_config_rom_ip1394_remove(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | /* Remove a card from our list */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 616 | static void ether1394_remove_host(struct hpsb_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | { |
| 618 | struct eth1394_host_info *hi; |
Stefan Richter | 2cd556a | 2007-02-10 23:57:57 +0100 | [diff] [blame] | 619 | struct eth1394_priv *priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
| 621 | hi = hpsb_get_hostinfo(ð1394_highlevel, host); |
Stefan Richter | 2cd556a | 2007-02-10 23:57:57 +0100 | [diff] [blame] | 622 | if (!hi) |
| 623 | return; |
| 624 | priv = netdev_priv(hi->dev); |
| 625 | hpsb_unregister_addrspace(ð1394_highlevel, host, priv->local_fifo); |
Stefan Richter | 70093cf | 2007-03-27 01:36:50 +0200 | [diff] [blame] | 626 | hpsb_config_rom_ip1394_remove(host); |
Stefan Richter | 2cd556a | 2007-02-10 23:57:57 +0100 | [diff] [blame] | 627 | if (priv->iso) |
| 628 | hpsb_iso_shutdown(priv->iso); |
| 629 | unregister_netdev(hi->dev); |
| 630 | free_netdev(hi->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | } |
| 632 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 633 | /* A bus reset happened */ |
| 634 | static void ether1394_host_reset(struct hpsb_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | { |
| 636 | struct eth1394_host_info *hi; |
| 637 | struct eth1394_priv *priv; |
| 638 | struct net_device *dev; |
| 639 | struct list_head *lh, *n; |
| 640 | struct eth1394_node_ref *node; |
| 641 | struct eth1394_node_info *node_info; |
| 642 | unsigned long flags; |
| 643 | |
| 644 | hi = hpsb_get_hostinfo(ð1394_highlevel, host); |
| 645 | |
| 646 | /* This can happen for hosts that we don't use */ |
Stefan Richter | 2cd556a | 2007-02-10 23:57:57 +0100 | [diff] [blame] | 647 | if (!hi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | return; |
| 649 | |
| 650 | dev = hi->dev; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 651 | priv = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 653 | /* Reset our private host data, but not our MTU */ |
| 654 | netif_stop_queue(dev); |
| 655 | ether1394_reset_priv(dev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | list_for_each_entry(node, &priv->ip_node_list, list) { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 658 | node_info = node->ud->device.driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
| 660 | spin_lock_irqsave(&node_info->pdg.lock, flags); |
| 661 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 662 | list_for_each_safe(lh, n, &node_info->pdg.list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | purge_partial_datagram(lh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | |
| 665 | INIT_LIST_HEAD(&(node_info->pdg.list)); |
| 666 | node_info->pdg.sz = 0; |
| 667 | |
| 668 | spin_unlock_irqrestore(&node_info->pdg.lock, flags); |
| 669 | } |
| 670 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 671 | netif_wake_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | /****************************************** |
| 675 | * HW Header net device functions |
| 676 | ******************************************/ |
| 677 | /* These functions have been adapted from net/ethernet/eth.c */ |
| 678 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | /* Create a fake MAC header for an arbitrary protocol layer. |
| 680 | * saddr=NULL means use device source address |
| 681 | * daddr=NULL means leave destination address (eg unresolved arp). */ |
| 682 | static int ether1394_header(struct sk_buff *skb, struct net_device *dev, |
| 683 | unsigned short type, void *daddr, void *saddr, |
| 684 | unsigned len) |
| 685 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 686 | struct eth1394hdr *eth = |
| 687 | (struct eth1394hdr *)skb_push(skb, ETH1394_HLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
| 689 | eth->h_proto = htons(type); |
| 690 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 691 | if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | memset(eth->h_dest, 0, dev->addr_len); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 693 | return dev->hard_header_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | } |
| 695 | |
| 696 | if (daddr) { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 697 | memcpy(eth->h_dest, daddr, dev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | return dev->hard_header_len; |
| 699 | } |
| 700 | |
| 701 | return -dev->hard_header_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } |
| 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | /* Rebuild the faked MAC header. This is called after an ARP |
| 705 | * (or in future other address resolution) has completed on this |
| 706 | * sk_buff. We now let ARP fill in the other fields. |
| 707 | * |
| 708 | * This routine CANNOT use cached dst->neigh! |
| 709 | * Really, it is used only when dst->neigh is wrong. |
| 710 | */ |
| 711 | static int ether1394_rebuild_header(struct sk_buff *skb) |
| 712 | { |
| 713 | struct eth1394hdr *eth = (struct eth1394hdr *)skb->data; |
| 714 | struct net_device *dev = skb->dev; |
| 715 | |
| 716 | switch (eth->h_proto) { |
| 717 | |
| 718 | #ifdef CONFIG_INET |
| 719 | case __constant_htons(ETH_P_IP): |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 720 | return arp_find((unsigned char *)ð->h_dest, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | #endif |
| 722 | default: |
| 723 | ETH1394_PRINT(KERN_DEBUG, dev->name, |
| 724 | "unable to resolve type %04x addresses.\n", |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 725 | ntohs(eth->h_proto)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | break; |
| 727 | } |
| 728 | |
| 729 | return 0; |
| 730 | } |
| 731 | |
| 732 | static int ether1394_header_parse(struct sk_buff *skb, unsigned char *haddr) |
| 733 | { |
| 734 | struct net_device *dev = skb->dev; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | memcpy(haddr, dev->dev_addr, ETH1394_ALEN); |
| 737 | return ETH1394_ALEN; |
| 738 | } |
| 739 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | static int ether1394_header_cache(struct neighbour *neigh, struct hh_cache *hh) |
| 741 | { |
| 742 | unsigned short type = hh->hh_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | struct net_device *dev = neigh->dev; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 744 | struct eth1394hdr *eth = |
| 745 | (struct eth1394hdr *)((u8 *)hh->hh_data + 16 - ETH1394_HLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 747 | if (type == htons(ETH_P_802_3)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
| 750 | eth->h_proto = type; |
| 751 | memcpy(eth->h_dest, neigh->ha, dev->addr_len); |
| 752 | |
| 753 | hh->hh_len = ETH1394_HLEN; |
| 754 | return 0; |
| 755 | } |
| 756 | |
| 757 | /* Called by Address Resolution module to notify changes in address. */ |
| 758 | static void ether1394_header_cache_update(struct hh_cache *hh, |
| 759 | struct net_device *dev, |
| 760 | unsigned char * haddr) |
| 761 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 762 | memcpy((u8 *)hh->hh_data + 16 - ETH1394_HLEN, haddr, dev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | static int ether1394_mac_addr(struct net_device *dev, void *p) |
| 766 | { |
| 767 | if (netif_running(dev)) |
| 768 | return -EBUSY; |
| 769 | |
| 770 | /* Not going to allow setting the MAC address, we really need to use |
| 771 | * the real one supplied by the hardware */ |
| 772 | return -EINVAL; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 773 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
| 775 | /****************************************** |
| 776 | * Datagram reception code |
| 777 | ******************************************/ |
| 778 | |
| 779 | /* Copied from net/ethernet/eth.c */ |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 780 | static u16 ether1394_type_trans(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | { |
| 782 | struct eth1394hdr *eth; |
| 783 | unsigned char *rawp; |
| 784 | |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 785 | skb_reset_mac_header(skb); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 786 | skb_pull(skb, ETH1394_HLEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | eth = eth1394_hdr(skb); |
| 788 | |
| 789 | if (*eth->h_dest & 1) { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 790 | if (memcmp(eth->h_dest, dev->broadcast, dev->addr_len) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | skb->pkt_type = PACKET_BROADCAST; |
| 792 | #if 0 |
| 793 | else |
| 794 | skb->pkt_type = PACKET_MULTICAST; |
| 795 | #endif |
| 796 | } else { |
| 797 | if (memcmp(eth->h_dest, dev->dev_addr, dev->addr_len)) |
| 798 | skb->pkt_type = PACKET_OTHERHOST; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 799 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 801 | if (ntohs(eth->h_proto) >= 1536) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | return eth->h_proto; |
| 803 | |
| 804 | rawp = skb->data; |
| 805 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 806 | if (*(unsigned short *)rawp == 0xFFFF) |
| 807 | return htons(ETH_P_802_3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 809 | return htons(ETH_P_802_2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | /* Parse an encapsulated IP1394 header into an ethernet frame packet. |
| 813 | * We also perform ARP translation here, if need be. */ |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 814 | static u16 ether1394_parse_encap(struct sk_buff *skb, struct net_device *dev, |
| 815 | nodeid_t srcid, nodeid_t destid, |
| 816 | u16 ether_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | { |
| 818 | struct eth1394_priv *priv = netdev_priv(dev); |
| 819 | u64 dest_hw; |
| 820 | unsigned short ret = 0; |
| 821 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 822 | /* Setup our hw addresses. We use these to build the ethernet header. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | if (destid == (LOCAL_BUS | ALL_NODES)) |
| 824 | dest_hw = ~0ULL; /* broadcast */ |
| 825 | else |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 826 | dest_hw = cpu_to_be64((u64)priv->host->csr.guid_hi << 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | priv->host->csr.guid_lo); |
| 828 | |
| 829 | /* If this is an ARP packet, convert it. First, we want to make |
| 830 | * use of some of the fields, since they tell us a little bit |
| 831 | * about the sending machine. */ |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 832 | if (ether_type == htons(ETH_P_ARP)) { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 833 | struct eth1394_arp *arp1394 = (struct eth1394_arp *)skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | struct arphdr *arp = (struct arphdr *)skb->data; |
| 835 | unsigned char *arp_ptr = (unsigned char *)(arp + 1); |
| 836 | u64 fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 837 | ntohl(arp1394->fifo_lo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | u8 max_rec = min(priv->host->csr.max_rec, |
| 839 | (u8)(arp1394->max_rec)); |
| 840 | int sspd = arp1394->sspd; |
| 841 | u16 maxpayload; |
| 842 | struct eth1394_node_ref *node; |
| 843 | struct eth1394_node_info *node_info; |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 844 | __be64 guid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | |
| 846 | /* Sanity check. MacOSX seems to be sending us 131 in this |
| 847 | * field (atleast on my Panther G5). Not sure why. */ |
| 848 | if (sspd > 5 || sspd < 0) |
| 849 | sspd = 0; |
| 850 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 851 | maxpayload = min(eth1394_speedto_maxpayload[sspd], |
| 852 | (u16)(1 << (max_rec + 1))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 854 | guid = get_unaligned(&arp1394->s_uniq_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | node = eth1394_find_node_guid(&priv->ip_node_list, |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 856 | be64_to_cpu(guid)); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 857 | if (!node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 860 | node_info = |
| 861 | (struct eth1394_node_info *)node->ud->device.driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | |
| 863 | /* Update our speed/payload/fifo_offset table */ |
| 864 | node_info->maxpayload = maxpayload; |
| 865 | node_info->sspd = sspd; |
| 866 | node_info->fifo = fifo_addr; |
| 867 | |
| 868 | /* Now that we're done with the 1394 specific stuff, we'll |
| 869 | * need to alter some of the data. Believe it or not, all |
| 870 | * that needs to be done is sender_IP_address needs to be |
| 871 | * moved, the destination hardware address get stuffed |
| 872 | * in and the hardware address length set to 8. |
| 873 | * |
| 874 | * IMPORTANT: The code below overwrites 1394 specific data |
| 875 | * needed above so keep the munging of the data for the |
| 876 | * higher level IP stack last. */ |
| 877 | |
| 878 | arp->ar_hln = 8; |
| 879 | arp_ptr += arp->ar_hln; /* skip over sender unique id */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 880 | *(u32 *)arp_ptr = arp1394->sip; /* move sender IP addr */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | arp_ptr += arp->ar_pln; /* skip over sender IP addr */ |
| 882 | |
Ben Collins | 02f4213 | 2006-06-12 18:15:11 -0400 | [diff] [blame] | 883 | if (arp->ar_op == htons(ARPOP_REQUEST)) |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 884 | memset(arp_ptr, 0, sizeof(u64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | else |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 886 | memcpy(arp_ptr, dev->dev_addr, sizeof(u64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | } |
| 888 | |
| 889 | /* Now add the ethernet header. */ |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 890 | if (dev->hard_header(skb, dev, ntohs(ether_type), &dest_hw, NULL, |
| 891 | skb->len) >= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | ret = ether1394_type_trans(skb, dev); |
| 893 | |
| 894 | return ret; |
| 895 | } |
| 896 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 897 | static int fragment_overlap(struct list_head *frag_list, int offset, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | { |
| 899 | struct fragment_info *fi; |
| 900 | |
| 901 | list_for_each_entry(fi, frag_list, list) { |
| 902 | if ( ! ((offset > (fi->offset + fi->len - 1)) || |
| 903 | ((offset + len - 1) < fi->offset))) |
| 904 | return 1; |
| 905 | } |
| 906 | return 0; |
| 907 | } |
| 908 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 909 | static struct list_head *find_partial_datagram(struct list_head *pdgl, int dgl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | { |
| 911 | struct partial_datagram *pd; |
| 912 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 913 | list_for_each_entry(pd, pdgl, list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | if (pd->dgl == dgl) |
| 915 | return &pd->list; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 916 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | return NULL; |
| 918 | } |
| 919 | |
| 920 | /* Assumes that new fragment does not overlap any existing fragments */ |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 921 | static int new_fragment(struct list_head *frag_info, int offset, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | { |
| 923 | struct list_head *lh; |
| 924 | struct fragment_info *fi, *fi2, *new; |
| 925 | |
| 926 | list_for_each(lh, frag_info) { |
| 927 | fi = list_entry(lh, struct fragment_info, list); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 928 | if (fi->offset + fi->len == offset) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | /* The new fragment can be tacked on to the end */ |
| 930 | fi->len += len; |
| 931 | /* Did the new fragment plug a hole? */ |
| 932 | fi2 = list_entry(lh->next, struct fragment_info, list); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 933 | if (fi->offset + fi->len == fi2->offset) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | /* glue fragments together */ |
| 935 | fi->len += fi2->len; |
| 936 | list_del(lh->next); |
| 937 | kfree(fi2); |
| 938 | } |
| 939 | return 0; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 940 | } else if (offset + len == fi->offset) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | /* The new fragment can be tacked on to the beginning */ |
| 942 | fi->offset = offset; |
| 943 | fi->len += len; |
| 944 | /* Did the new fragment plug a hole? */ |
| 945 | fi2 = list_entry(lh->prev, struct fragment_info, list); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 946 | if (fi2->offset + fi2->len == fi->offset) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | /* glue fragments together */ |
| 948 | fi2->len += fi->len; |
| 949 | list_del(lh); |
| 950 | kfree(fi); |
| 951 | } |
| 952 | return 0; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 953 | } else if (offset > fi->offset + fi->len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | break; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 955 | } else if (offset + len < fi->offset) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | lh = lh->prev; |
| 957 | break; |
| 958 | } |
| 959 | } |
| 960 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 961 | new = kmalloc(sizeof(*new), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | if (!new) |
| 963 | return -ENOMEM; |
| 964 | |
| 965 | new->offset = offset; |
| 966 | new->len = len; |
| 967 | |
| 968 | list_add(&new->list, lh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | return 0; |
| 970 | } |
| 971 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 972 | static int new_partial_datagram(struct net_device *dev, struct list_head *pdgl, |
| 973 | int dgl, int dg_size, char *frag_buf, |
| 974 | int frag_off, int frag_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | { |
| 976 | struct partial_datagram *new; |
| 977 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 978 | new = kmalloc(sizeof(*new), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | if (!new) |
| 980 | return -ENOMEM; |
| 981 | |
| 982 | INIT_LIST_HEAD(&new->frag_info); |
| 983 | |
| 984 | if (new_fragment(&new->frag_info, frag_off, frag_len) < 0) { |
| 985 | kfree(new); |
| 986 | return -ENOMEM; |
| 987 | } |
| 988 | |
| 989 | new->dgl = dgl; |
| 990 | new->dg_size = dg_size; |
| 991 | |
| 992 | new->skb = dev_alloc_skb(dg_size + dev->hard_header_len + 15); |
| 993 | if (!new->skb) { |
| 994 | struct fragment_info *fi = list_entry(new->frag_info.next, |
| 995 | struct fragment_info, |
| 996 | list); |
| 997 | kfree(fi); |
| 998 | kfree(new); |
| 999 | return -ENOMEM; |
| 1000 | } |
| 1001 | |
| 1002 | skb_reserve(new->skb, (dev->hard_header_len + 15) & ~15); |
| 1003 | new->pbuf = skb_put(new->skb, dg_size); |
| 1004 | memcpy(new->pbuf + frag_off, frag_buf, frag_len); |
| 1005 | |
| 1006 | list_add(&new->list, pdgl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | return 0; |
| 1008 | } |
| 1009 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1010 | static int update_partial_datagram(struct list_head *pdgl, struct list_head *lh, |
| 1011 | char *frag_buf, int frag_off, int frag_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1013 | struct partial_datagram *pd = |
| 1014 | list_entry(lh, struct partial_datagram, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1016 | if (new_fragment(&pd->frag_info, frag_off, frag_len) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
| 1019 | memcpy(pd->pbuf + frag_off, frag_buf, frag_len); |
| 1020 | |
| 1021 | /* Move list entry to beginnig of list so that oldest partial |
| 1022 | * datagrams percolate to the end of the list */ |
Akinobu Mita | 179e091 | 2006-06-26 00:24:41 -0700 | [diff] [blame] | 1023 | list_move(lh, pdgl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | return 0; |
| 1025 | } |
| 1026 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1027 | static int is_datagram_complete(struct list_head *lh, int dg_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | { |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1029 | struct partial_datagram *pd; |
| 1030 | struct fragment_info *fi; |
| 1031 | |
| 1032 | pd = list_entry(lh, struct partial_datagram, list); |
| 1033 | fi = list_entry(pd->frag_info.next, struct fragment_info, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | |
| 1035 | return (fi->len == dg_size); |
| 1036 | } |
| 1037 | |
| 1038 | /* Packet reception. We convert the IP1394 encapsulation header to an |
| 1039 | * ethernet header, and fill it with some of our other fields. This is |
| 1040 | * an incoming packet from the 1394 bus. */ |
| 1041 | static int ether1394_data_handler(struct net_device *dev, int srcid, int destid, |
| 1042 | char *buf, int len) |
| 1043 | { |
| 1044 | struct sk_buff *skb; |
| 1045 | unsigned long flags; |
| 1046 | struct eth1394_priv *priv = netdev_priv(dev); |
| 1047 | union eth1394_hdr *hdr = (union eth1394_hdr *)buf; |
| 1048 | u16 ether_type = 0; /* initialized to clear warning */ |
| 1049 | int hdr_len; |
| 1050 | struct unit_directory *ud = priv->ud_list[NODEID_TO_NODE(srcid)]; |
| 1051 | struct eth1394_node_info *node_info; |
| 1052 | |
| 1053 | if (!ud) { |
| 1054 | struct eth1394_node_ref *node; |
| 1055 | node = eth1394_find_node_nodeid(&priv->ip_node_list, srcid); |
| 1056 | if (!node) { |
| 1057 | HPSB_PRINT(KERN_ERR, "ether1394 rx: sender nodeid " |
| 1058 | "lookup failure: " NODE_BUS_FMT, |
| 1059 | NODE_BUS_ARGS(priv->host, srcid)); |
| 1060 | priv->stats.rx_dropped++; |
| 1061 | return -1; |
| 1062 | } |
| 1063 | ud = node->ud; |
| 1064 | |
| 1065 | priv->ud_list[NODEID_TO_NODE(srcid)] = ud; |
| 1066 | } |
| 1067 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1068 | node_info = (struct eth1394_node_info *)ud->device.driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | |
| 1070 | /* First, did we receive a fragmented or unfragmented datagram? */ |
| 1071 | hdr->words.word1 = ntohs(hdr->words.word1); |
| 1072 | |
| 1073 | hdr_len = hdr_type_len[hdr->common.lf]; |
| 1074 | |
| 1075 | if (hdr->common.lf == ETH1394_HDR_LF_UF) { |
| 1076 | /* An unfragmented datagram has been received by the ieee1394 |
| 1077 | * bus. Build an skbuff around it so we can pass it to the |
| 1078 | * high level network layer. */ |
| 1079 | |
| 1080 | skb = dev_alloc_skb(len + dev->hard_header_len + 15); |
| 1081 | if (!skb) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 1082 | ETH1394_PRINT_G(KERN_ERR, "Out of memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | priv->stats.rx_dropped++; |
| 1084 | return -1; |
| 1085 | } |
| 1086 | skb_reserve(skb, (dev->hard_header_len + 15) & ~15); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1087 | memcpy(skb_put(skb, len - hdr_len), buf + hdr_len, |
| 1088 | len - hdr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | ether_type = hdr->uf.ether_type; |
| 1090 | } else { |
| 1091 | /* A datagram fragment has been received, now the fun begins. */ |
| 1092 | |
| 1093 | struct list_head *pdgl, *lh; |
| 1094 | struct partial_datagram *pd; |
| 1095 | int fg_off; |
| 1096 | int fg_len = len - hdr_len; |
| 1097 | int dg_size; |
| 1098 | int dgl; |
| 1099 | int retval; |
| 1100 | struct pdg_list *pdg = &(node_info->pdg); |
| 1101 | |
| 1102 | hdr->words.word3 = ntohs(hdr->words.word3); |
| 1103 | /* The 4th header word is reserved so no need to do ntohs() */ |
| 1104 | |
| 1105 | if (hdr->common.lf == ETH1394_HDR_LF_FF) { |
| 1106 | ether_type = hdr->ff.ether_type; |
| 1107 | dgl = hdr->ff.dgl; |
| 1108 | dg_size = hdr->ff.dg_size + 1; |
| 1109 | fg_off = 0; |
| 1110 | } else { |
| 1111 | hdr->words.word2 = ntohs(hdr->words.word2); |
| 1112 | dgl = hdr->sf.dgl; |
| 1113 | dg_size = hdr->sf.dg_size + 1; |
| 1114 | fg_off = hdr->sf.fg_off; |
| 1115 | } |
| 1116 | spin_lock_irqsave(&pdg->lock, flags); |
| 1117 | |
| 1118 | pdgl = &(pdg->list); |
| 1119 | lh = find_partial_datagram(pdgl, dgl); |
| 1120 | |
| 1121 | if (lh == NULL) { |
| 1122 | while (pdg->sz >= max_partial_datagrams) { |
| 1123 | /* remove the oldest */ |
| 1124 | purge_partial_datagram(pdgl->prev); |
| 1125 | pdg->sz--; |
| 1126 | } |
| 1127 | |
| 1128 | retval = new_partial_datagram(dev, pdgl, dgl, dg_size, |
| 1129 | buf + hdr_len, fg_off, |
| 1130 | fg_len); |
| 1131 | if (retval < 0) { |
| 1132 | spin_unlock_irqrestore(&pdg->lock, flags); |
| 1133 | goto bad_proto; |
| 1134 | } |
| 1135 | pdg->sz++; |
| 1136 | lh = find_partial_datagram(pdgl, dgl); |
| 1137 | } else { |
| 1138 | struct partial_datagram *pd; |
| 1139 | |
| 1140 | pd = list_entry(lh, struct partial_datagram, list); |
| 1141 | |
| 1142 | if (fragment_overlap(&pd->frag_info, fg_off, fg_len)) { |
| 1143 | /* Overlapping fragments, obliterate old |
| 1144 | * datagram and start new one. */ |
| 1145 | purge_partial_datagram(lh); |
| 1146 | retval = new_partial_datagram(dev, pdgl, dgl, |
| 1147 | dg_size, |
| 1148 | buf + hdr_len, |
| 1149 | fg_off, fg_len); |
| 1150 | if (retval < 0) { |
| 1151 | pdg->sz--; |
| 1152 | spin_unlock_irqrestore(&pdg->lock, flags); |
| 1153 | goto bad_proto; |
| 1154 | } |
| 1155 | } else { |
| 1156 | retval = update_partial_datagram(pdgl, lh, |
| 1157 | buf + hdr_len, |
| 1158 | fg_off, fg_len); |
| 1159 | if (retval < 0) { |
| 1160 | /* Couldn't save off fragment anyway |
| 1161 | * so might as well obliterate the |
| 1162 | * datagram now. */ |
| 1163 | purge_partial_datagram(lh); |
| 1164 | pdg->sz--; |
| 1165 | spin_unlock_irqrestore(&pdg->lock, flags); |
| 1166 | goto bad_proto; |
| 1167 | } |
| 1168 | } /* fragment overlap */ |
| 1169 | } /* new datagram or add to existing one */ |
| 1170 | |
| 1171 | pd = list_entry(lh, struct partial_datagram, list); |
| 1172 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1173 | if (hdr->common.lf == ETH1394_HDR_LF_FF) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | pd->ether_type = ether_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | |
| 1176 | if (is_datagram_complete(lh, dg_size)) { |
| 1177 | ether_type = pd->ether_type; |
| 1178 | pdg->sz--; |
| 1179 | skb = skb_get(pd->skb); |
| 1180 | purge_partial_datagram(lh); |
| 1181 | spin_unlock_irqrestore(&pdg->lock, flags); |
| 1182 | } else { |
| 1183 | /* Datagram is not complete, we're done for the |
| 1184 | * moment. */ |
| 1185 | spin_unlock_irqrestore(&pdg->lock, flags); |
| 1186 | return 0; |
| 1187 | } |
| 1188 | } /* unframgented datagram or fragmented one */ |
| 1189 | |
| 1190 | /* Write metadata, and then pass to the receive level */ |
| 1191 | skb->dev = dev; |
| 1192 | skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */ |
| 1193 | |
| 1194 | /* Parse the encapsulation header. This actually does the job of |
| 1195 | * converting to an ethernet frame header, aswell as arp |
| 1196 | * conversion if needed. ARP conversion is easier in this |
| 1197 | * direction, since we are using ethernet as our backend. */ |
| 1198 | skb->protocol = ether1394_parse_encap(skb, dev, srcid, destid, |
| 1199 | ether_type); |
| 1200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | spin_lock_irqsave(&priv->lock, flags); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | if (!skb->protocol) { |
| 1204 | priv->stats.rx_errors++; |
| 1205 | priv->stats.rx_dropped++; |
| 1206 | dev_kfree_skb_any(skb); |
| 1207 | goto bad_proto; |
| 1208 | } |
| 1209 | |
| 1210 | if (netif_rx(skb) == NET_RX_DROP) { |
| 1211 | priv->stats.rx_errors++; |
| 1212 | priv->stats.rx_dropped++; |
| 1213 | goto bad_proto; |
| 1214 | } |
| 1215 | |
| 1216 | /* Statistics */ |
| 1217 | priv->stats.rx_packets++; |
| 1218 | priv->stats.rx_bytes += skb->len; |
| 1219 | |
| 1220 | bad_proto: |
| 1221 | if (netif_queue_stopped(dev)) |
| 1222 | netif_wake_queue(dev); |
| 1223 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1224 | |
| 1225 | dev->last_rx = jiffies; |
| 1226 | |
| 1227 | return 0; |
| 1228 | } |
| 1229 | |
| 1230 | static int ether1394_write(struct hpsb_host *host, int srcid, int destid, |
| 1231 | quadlet_t *data, u64 addr, size_t len, u16 flags) |
| 1232 | { |
| 1233 | struct eth1394_host_info *hi; |
| 1234 | |
| 1235 | hi = hpsb_get_hostinfo(ð1394_highlevel, host); |
| 1236 | if (hi == NULL) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 1237 | ETH1394_PRINT_G(KERN_ERR, "No net device at fw-host%d\n", |
| 1238 | host->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | return RCODE_ADDRESS_ERROR; |
| 1240 | } |
| 1241 | |
| 1242 | if (ether1394_data_handler(hi->dev, srcid, destid, (char*)data, len)) |
| 1243 | return RCODE_ADDRESS_ERROR; |
| 1244 | else |
| 1245 | return RCODE_COMPLETE; |
| 1246 | } |
| 1247 | |
| 1248 | static void ether1394_iso(struct hpsb_iso *iso) |
| 1249 | { |
| 1250 | quadlet_t *data; |
| 1251 | char *buf; |
| 1252 | struct eth1394_host_info *hi; |
| 1253 | struct net_device *dev; |
| 1254 | struct eth1394_priv *priv; |
| 1255 | unsigned int len; |
| 1256 | u32 specifier_id; |
| 1257 | u16 source_id; |
| 1258 | int i; |
| 1259 | int nready; |
| 1260 | |
| 1261 | hi = hpsb_get_hostinfo(ð1394_highlevel, iso->host); |
| 1262 | if (hi == NULL) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 1263 | ETH1394_PRINT_G(KERN_ERR, "No net device at fw-host%d\n", |
| 1264 | iso->host->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | return; |
| 1266 | } |
| 1267 | |
| 1268 | dev = hi->dev; |
| 1269 | |
| 1270 | nready = hpsb_iso_n_ready(iso); |
| 1271 | for (i = 0; i < nready; i++) { |
| 1272 | struct hpsb_iso_packet_info *info = |
| 1273 | &iso->infos[(iso->first_packet + i) % iso->buf_packets]; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1274 | data = (quadlet_t *)(iso->data_buf.kvirt + info->offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | |
| 1276 | /* skip over GASP header */ |
| 1277 | buf = (char *)data + 8; |
| 1278 | len = info->len - 8; |
| 1279 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1280 | specifier_id = (be32_to_cpu(data[0]) & 0xffff) << 8 | |
| 1281 | (be32_to_cpu(data[1]) & 0xff000000) >> 24; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | source_id = be32_to_cpu(data[0]) >> 16; |
| 1283 | |
| 1284 | priv = netdev_priv(dev); |
| 1285 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1286 | if (info->channel != (iso->host->csr.broadcast_channel & 0x3f) |
| 1287 | || specifier_id != ETHER1394_GASP_SPECIFIER_ID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | /* This packet is not for us */ |
| 1289 | continue; |
| 1290 | } |
| 1291 | ether1394_data_handler(dev, source_id, LOCAL_BUS | ALL_NODES, |
| 1292 | buf, len); |
| 1293 | } |
| 1294 | |
| 1295 | hpsb_iso_recv_release_packets(iso, i); |
| 1296 | |
| 1297 | dev->last_rx = jiffies; |
| 1298 | } |
| 1299 | |
| 1300 | /****************************************** |
| 1301 | * Datagram transmission code |
| 1302 | ******************************************/ |
| 1303 | |
| 1304 | /* Convert a standard ARP packet to 1394 ARP. The first 8 bytes (the entire |
| 1305 | * arphdr) is the same format as the ip1394 header, so they overlap. The rest |
| 1306 | * needs to be munged a bit. The remainder of the arphdr is formatted based |
| 1307 | * on hwaddr len and ipaddr len. We know what they'll be, so it's easy to |
| 1308 | * judge. |
| 1309 | * |
| 1310 | * Now that the EUI is used for the hardware address all we need to do to make |
| 1311 | * this work for 1394 is to insert 2 quadlets that contain max_rec size, |
| 1312 | * speed, and unicast FIFO address information between the sender_unique_id |
| 1313 | * and the IP addresses. |
| 1314 | */ |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1315 | static void ether1394_arp_to_1394arp(struct sk_buff *skb, |
| 1316 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | { |
| 1318 | struct eth1394_priv *priv = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | struct arphdr *arp = (struct arphdr *)skb->data; |
| 1320 | unsigned char *arp_ptr = (unsigned char *)(arp + 1); |
| 1321 | struct eth1394_arp *arp1394 = (struct eth1394_arp *)skb->data; |
| 1322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | arp1394->hw_addr_len = 16; |
| 1324 | arp1394->sip = *(u32*)(arp_ptr + ETH1394_ALEN); |
| 1325 | arp1394->max_rec = priv->host->csr.max_rec; |
| 1326 | arp1394->sspd = priv->host->csr.lnk_spd; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1327 | arp1394->fifo_hi = htons(priv->local_fifo >> 32); |
| 1328 | arp1394->fifo_lo = htonl(priv->local_fifo & ~0x0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | } |
| 1330 | |
| 1331 | /* We need to encapsulate the standard header with our own. We use the |
| 1332 | * ethernet header's proto for our own. */ |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1333 | static unsigned int ether1394_encapsulate_prep(unsigned int max_payload, |
| 1334 | __be16 proto, |
| 1335 | union eth1394_hdr *hdr, |
| 1336 | u16 dg_size, u16 dgl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1338 | unsigned int adj_max_payload = |
| 1339 | max_payload - hdr_type_len[ETH1394_HDR_LF_UF]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | |
| 1341 | /* Does it all fit in one packet? */ |
| 1342 | if (dg_size <= adj_max_payload) { |
| 1343 | hdr->uf.lf = ETH1394_HDR_LF_UF; |
| 1344 | hdr->uf.ether_type = proto; |
| 1345 | } else { |
| 1346 | hdr->ff.lf = ETH1394_HDR_LF_FF; |
| 1347 | hdr->ff.ether_type = proto; |
| 1348 | hdr->ff.dg_size = dg_size - 1; |
| 1349 | hdr->ff.dgl = dgl; |
| 1350 | adj_max_payload = max_payload - hdr_type_len[ETH1394_HDR_LF_FF]; |
| 1351 | } |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1352 | return (dg_size + adj_max_payload - 1) / adj_max_payload; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | } |
| 1354 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1355 | static unsigned int ether1394_encapsulate(struct sk_buff *skb, |
| 1356 | unsigned int max_payload, |
| 1357 | union eth1394_hdr *hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | { |
| 1359 | union eth1394_hdr *bufhdr; |
| 1360 | int ftype = hdr->common.lf; |
| 1361 | int hdrsz = hdr_type_len[ftype]; |
| 1362 | unsigned int adj_max_payload = max_payload - hdrsz; |
| 1363 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1364 | switch (ftype) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | case ETH1394_HDR_LF_UF: |
| 1366 | bufhdr = (union eth1394_hdr *)skb_push(skb, hdrsz); |
| 1367 | bufhdr->words.word1 = htons(hdr->words.word1); |
| 1368 | bufhdr->words.word2 = hdr->words.word2; |
| 1369 | break; |
| 1370 | |
| 1371 | case ETH1394_HDR_LF_FF: |
| 1372 | bufhdr = (union eth1394_hdr *)skb_push(skb, hdrsz); |
| 1373 | bufhdr->words.word1 = htons(hdr->words.word1); |
| 1374 | bufhdr->words.word2 = hdr->words.word2; |
| 1375 | bufhdr->words.word3 = htons(hdr->words.word3); |
| 1376 | bufhdr->words.word4 = 0; |
| 1377 | |
| 1378 | /* Set frag type here for future interior fragments */ |
| 1379 | hdr->common.lf = ETH1394_HDR_LF_IF; |
| 1380 | hdr->sf.fg_off = 0; |
| 1381 | break; |
| 1382 | |
| 1383 | default: |
| 1384 | hdr->sf.fg_off += adj_max_payload; |
| 1385 | bufhdr = (union eth1394_hdr *)skb_pull(skb, adj_max_payload); |
| 1386 | if (max_payload >= skb->len) |
| 1387 | hdr->common.lf = ETH1394_HDR_LF_LF; |
| 1388 | bufhdr->words.word1 = htons(hdr->words.word1); |
| 1389 | bufhdr->words.word2 = htons(hdr->words.word2); |
| 1390 | bufhdr->words.word3 = htons(hdr->words.word3); |
| 1391 | bufhdr->words.word4 = 0; |
| 1392 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | return min(max_payload, skb->len); |
| 1394 | } |
| 1395 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1396 | static struct hpsb_packet *ether1394_alloc_common_packet(struct hpsb_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | { |
| 1398 | struct hpsb_packet *p; |
| 1399 | |
| 1400 | p = hpsb_alloc_packet(0); |
| 1401 | if (p) { |
| 1402 | p->host = host; |
| 1403 | p->generation = get_hpsb_generation(host); |
| 1404 | p->type = hpsb_async; |
| 1405 | } |
| 1406 | return p; |
| 1407 | } |
| 1408 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1409 | static int ether1394_prep_write_packet(struct hpsb_packet *p, |
| 1410 | struct hpsb_host *host, nodeid_t node, |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1411 | u64 addr, void *data, int tx_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | { |
| 1413 | p->node_id = node; |
| 1414 | p->data = NULL; |
| 1415 | |
| 1416 | p->tcode = TCODE_WRITEB; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1417 | p->header[1] = host->node_id << 16 | addr >> 32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | p->header[2] = addr & 0xffffffff; |
| 1419 | |
| 1420 | p->header_size = 16; |
| 1421 | p->expect_response = 1; |
| 1422 | |
| 1423 | if (hpsb_get_tlabel(p)) { |
Stefan Richter | 5009d26 | 2007-04-02 02:15:53 +0200 | [diff] [blame] | 1424 | ETH1394_PRINT_G(KERN_ERR, "Out of tlabels\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | return -1; |
| 1426 | } |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1427 | p->header[0] = |
| 1428 | p->node_id << 16 | p->tlabel << 10 | 1 << 8 | TCODE_WRITEB << 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | |
| 1430 | p->header[3] = tx_len << 16; |
| 1431 | p->data_size = (tx_len + 3) & ~3; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1432 | p->data = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | |
| 1434 | return 0; |
| 1435 | } |
| 1436 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1437 | static void ether1394_prep_gasp_packet(struct hpsb_packet *p, |
| 1438 | struct eth1394_priv *priv, |
| 1439 | struct sk_buff *skb, int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | { |
| 1441 | p->header_size = 4; |
| 1442 | p->tcode = TCODE_STREAM_DATA; |
| 1443 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1444 | p->header[0] = length << 16 | 3 << 14 | priv->broadcast_channel << 8 | |
| 1445 | TCODE_STREAM_DATA << 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | p->data_size = length; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1447 | p->data = (quadlet_t *)skb->data - 2; |
| 1448 | p->data[0] = cpu_to_be32(priv->host->node_id << 16 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | ETHER1394_GASP_SPECIFIER_ID_HI); |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1450 | p->data[1] = cpu_to_be32(ETHER1394_GASP_SPECIFIER_ID_LO << 24 | |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 1451 | ETHER1394_GASP_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | |
| 1453 | /* Setting the node id to ALL_NODES (not LOCAL_BUS | ALL_NODES) |
| 1454 | * prevents hpsb_send_packet() from setting the speed to an arbitrary |
| 1455 | * value based on packet->node_id if packet->node_id is not set. */ |
| 1456 | p->node_id = ALL_NODES; |
| 1457 | p->speed_code = priv->bc_sspd; |
| 1458 | } |
| 1459 | |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1460 | static void ether1394_free_packet(struct hpsb_packet *packet) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | { |
| 1462 | if (packet->tcode != TCODE_STREAM_DATA) |
| 1463 | hpsb_free_tlabel(packet); |
| 1464 | hpsb_free_packet(packet); |
| 1465 | } |
| 1466 | |
| 1467 | static void ether1394_complete_cb(void *__ptask); |
| 1468 | |
| 1469 | static int ether1394_send_packet(struct packet_task *ptask, unsigned int tx_len) |
| 1470 | { |
| 1471 | struct eth1394_priv *priv = ptask->priv; |
| 1472 | struct hpsb_packet *packet = NULL; |
| 1473 | |
| 1474 | packet = ether1394_alloc_common_packet(priv->host); |
| 1475 | if (!packet) |
| 1476 | return -1; |
| 1477 | |
| 1478 | if (ptask->tx_type == ETH1394_GASP) { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1479 | int length = tx_len + 2 * sizeof(quadlet_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | |
| 1481 | ether1394_prep_gasp_packet(packet, priv, ptask->skb, length); |
| 1482 | } else if (ether1394_prep_write_packet(packet, priv->host, |
| 1483 | ptask->dest_node, |
| 1484 | ptask->addr, ptask->skb->data, |
| 1485 | tx_len)) { |
| 1486 | hpsb_free_packet(packet); |
| 1487 | return -1; |
| 1488 | } |
| 1489 | |
| 1490 | ptask->packet = packet; |
| 1491 | hpsb_set_packet_complete_task(ptask->packet, ether1394_complete_cb, |
| 1492 | ptask); |
| 1493 | |
| 1494 | if (hpsb_send_packet(packet) < 0) { |
| 1495 | ether1394_free_packet(packet); |
| 1496 | return -1; |
| 1497 | } |
| 1498 | |
| 1499 | return 0; |
| 1500 | } |
| 1501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | /* Task function to be run when a datagram transmission is completed */ |
Stefan Richter | e00f04a | 2007-03-18 12:23:11 +0100 | [diff] [blame] | 1503 | static void ether1394_dg_complete(struct packet_task *ptask, int fail) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | { |
| 1505 | struct sk_buff *skb = ptask->skb; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1506 | struct eth1394_priv *priv = netdev_priv(skb->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | unsigned long flags; |
| 1508 | |
| 1509 | /* Statistics */ |
| 1510 | spin_lock_irqsave(&priv->lock, flags); |
| 1511 | if (fail) { |
| 1512 | priv->stats.tx_dropped++; |
| 1513 | priv->stats.tx_errors++; |
| 1514 | } else { |
| 1515 | priv->stats.tx_bytes += skb->len; |
| 1516 | priv->stats.tx_packets++; |
| 1517 | } |
| 1518 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1519 | |
| 1520 | dev_kfree_skb_any(skb); |
| 1521 | kmem_cache_free(packet_task_cache, ptask); |
| 1522 | } |
| 1523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | /* Callback for when a packet has been sent and the status of that packet is |
| 1525 | * known */ |
| 1526 | static void ether1394_complete_cb(void *__ptask) |
| 1527 | { |
| 1528 | struct packet_task *ptask = (struct packet_task *)__ptask; |
| 1529 | struct hpsb_packet *packet = ptask->packet; |
| 1530 | int fail = 0; |
| 1531 | |
| 1532 | if (packet->tcode != TCODE_STREAM_DATA) |
| 1533 | fail = hpsb_packet_success(packet); |
| 1534 | |
| 1535 | ether1394_free_packet(packet); |
| 1536 | |
| 1537 | ptask->outstanding_pkts--; |
| 1538 | if (ptask->outstanding_pkts > 0 && !fail) { |
| 1539 | int tx_len; |
| 1540 | |
| 1541 | /* Add the encapsulation header to the fragment */ |
| 1542 | tx_len = ether1394_encapsulate(ptask->skb, ptask->max_payload, |
| 1543 | &ptask->hdr); |
| 1544 | if (ether1394_send_packet(ptask, tx_len)) |
| 1545 | ether1394_dg_complete(ptask, 1); |
| 1546 | } else { |
| 1547 | ether1394_dg_complete(ptask, fail); |
| 1548 | } |
| 1549 | } |
| 1550 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | /* Transmit a packet (called by kernel) */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1552 | static int ether1394_tx(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | { |
Al Viro | b4e3ca1 | 2005-10-21 03:22:34 -0400 | [diff] [blame] | 1554 | gfp_t kmflags = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | struct eth1394hdr *eth; |
| 1556 | struct eth1394_priv *priv = netdev_priv(dev); |
Ben Collins | 02f4213 | 2006-06-12 18:15:11 -0400 | [diff] [blame] | 1557 | __be16 proto; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | unsigned long flags; |
| 1559 | nodeid_t dest_node; |
| 1560 | eth1394_tx_type tx_type; |
| 1561 | int ret = 0; |
| 1562 | unsigned int tx_len; |
| 1563 | unsigned int max_payload; |
| 1564 | u16 dg_size; |
| 1565 | u16 dgl; |
| 1566 | struct packet_task *ptask; |
| 1567 | struct eth1394_node_ref *node; |
| 1568 | struct eth1394_node_info *node_info = NULL; |
| 1569 | |
| 1570 | ptask = kmem_cache_alloc(packet_task_cache, kmflags); |
| 1571 | if (ptask == NULL) { |
| 1572 | ret = -ENOMEM; |
| 1573 | goto fail; |
| 1574 | } |
| 1575 | |
| 1576 | /* XXX Ignore this for now. Noticed that when MacOSX is the IRM, |
| 1577 | * it does not set our validity bit. We need to compensate for |
| 1578 | * that somewhere else, but not in eth1394. */ |
| 1579 | #if 0 |
| 1580 | if ((priv->host->csr.broadcast_channel & 0xc0000000) != 0xc0000000) { |
| 1581 | ret = -EAGAIN; |
| 1582 | goto fail; |
| 1583 | } |
| 1584 | #endif |
| 1585 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1586 | skb = skb_share_check(skb, kmflags); |
| 1587 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | ret = -ENOMEM; |
| 1589 | goto fail; |
| 1590 | } |
| 1591 | |
| 1592 | /* Get rid of the fake eth1394 header, but save a pointer */ |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1593 | eth = (struct eth1394hdr *)skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | skb_pull(skb, ETH1394_HLEN); |
| 1595 | |
| 1596 | proto = eth->h_proto; |
| 1597 | dg_size = skb->len; |
| 1598 | |
| 1599 | /* Set the transmission type for the packet. ARP packets and IP |
| 1600 | * broadcast packets are sent via GASP. */ |
| 1601 | if (memcmp(eth->h_dest, dev->broadcast, ETH1394_ALEN) == 0 || |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 1602 | proto == htons(ETH_P_ARP) || |
| 1603 | (proto == htons(ETH_P_IP) && |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1604 | IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | tx_type = ETH1394_GASP; |
| 1606 | dest_node = LOCAL_BUS | ALL_NODES; |
| 1607 | max_payload = priv->bc_maxpayload - ETHER1394_GASP_OVERHEAD; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1608 | BUG_ON(max_payload < 512 - ETHER1394_GASP_OVERHEAD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | dgl = priv->bc_dgl; |
| 1610 | if (max_payload < dg_size + hdr_type_len[ETH1394_HDR_LF_UF]) |
| 1611 | priv->bc_dgl++; |
| 1612 | } else { |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 1613 | __be64 guid = get_unaligned((u64 *)eth->h_dest); |
| 1614 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | node = eth1394_find_node_guid(&priv->ip_node_list, |
David S. Miller | c20e394 | 2006-10-29 16:14:55 -0800 | [diff] [blame] | 1616 | be64_to_cpu(guid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | if (!node) { |
| 1618 | ret = -EAGAIN; |
| 1619 | goto fail; |
| 1620 | } |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1621 | node_info = |
| 1622 | (struct eth1394_node_info *)node->ud->device.driver_data; |
Ben Collins | 6737231 | 2006-06-12 18:15:31 -0400 | [diff] [blame] | 1623 | if (node_info->fifo == CSR1212_INVALID_ADDR_SPACE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | ret = -EAGAIN; |
| 1625 | goto fail; |
| 1626 | } |
| 1627 | |
| 1628 | dest_node = node->ud->ne->nodeid; |
| 1629 | max_payload = node_info->maxpayload; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1630 | BUG_ON(max_payload < 512 - ETHER1394_GASP_OVERHEAD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | |
| 1632 | dgl = node_info->dgl; |
| 1633 | if (max_payload < dg_size + hdr_type_len[ETH1394_HDR_LF_UF]) |
| 1634 | node_info->dgl++; |
| 1635 | tx_type = ETH1394_WRREQ; |
| 1636 | } |
| 1637 | |
| 1638 | /* If this is an ARP packet, convert it */ |
Ben Collins | 7136b80 | 2006-06-12 18:16:25 -0400 | [diff] [blame] | 1639 | if (proto == htons(ETH_P_ARP)) |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1640 | ether1394_arp_to_1394arp(skb, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | |
| 1642 | ptask->hdr.words.word1 = 0; |
| 1643 | ptask->hdr.words.word2 = 0; |
| 1644 | ptask->hdr.words.word3 = 0; |
| 1645 | ptask->hdr.words.word4 = 0; |
| 1646 | ptask->skb = skb; |
| 1647 | ptask->priv = priv; |
| 1648 | ptask->tx_type = tx_type; |
| 1649 | |
| 1650 | if (tx_type != ETH1394_GASP) { |
| 1651 | u64 addr; |
| 1652 | |
| 1653 | spin_lock_irqsave(&priv->lock, flags); |
| 1654 | addr = node_info->fifo; |
| 1655 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1656 | |
| 1657 | ptask->addr = addr; |
| 1658 | ptask->dest_node = dest_node; |
| 1659 | } |
| 1660 | |
| 1661 | ptask->tx_type = tx_type; |
| 1662 | ptask->max_payload = max_payload; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1663 | ptask->outstanding_pkts = ether1394_encapsulate_prep(max_payload, |
| 1664 | proto, &ptask->hdr, dg_size, dgl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | |
| 1666 | /* Add the encapsulation header to the fragment */ |
| 1667 | tx_len = ether1394_encapsulate(skb, max_payload, &ptask->hdr); |
| 1668 | dev->trans_start = jiffies; |
| 1669 | if (ether1394_send_packet(ptask, tx_len)) |
| 1670 | goto fail; |
| 1671 | |
| 1672 | netif_wake_queue(dev); |
| 1673 | return 0; |
| 1674 | fail: |
| 1675 | if (ptask) |
| 1676 | kmem_cache_free(packet_task_cache, ptask); |
| 1677 | |
| 1678 | if (skb != NULL) |
| 1679 | dev_kfree_skb(skb); |
| 1680 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1681 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | priv->stats.tx_dropped++; |
| 1683 | priv->stats.tx_errors++; |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1684 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | |
| 1686 | if (netif_queue_stopped(dev)) |
| 1687 | netif_wake_queue(dev); |
| 1688 | |
| 1689 | return 0; /* returning non-zero causes serious problems */ |
| 1690 | } |
| 1691 | |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1692 | static void ether1394_get_drvinfo(struct net_device *dev, |
| 1693 | struct ethtool_drvinfo *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1695 | strcpy(info->driver, driver_name); |
| 1696 | strcpy(info->bus_info, "ieee1394"); /* FIXME provide more detail? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | } |
| 1698 | |
| 1699 | static struct ethtool_ops ethtool_ops = { |
| 1700 | .get_drvinfo = ether1394_get_drvinfo |
| 1701 | }; |
| 1702 | |
| 1703 | static int __init ether1394_init_module (void) |
| 1704 | { |
Stefan Richter | efbeccf | 2007-04-02 02:12:32 +0200 | [diff] [blame] | 1705 | packet_task_cache = kmem_cache_create("packet_task", |
| 1706 | sizeof(struct packet_task), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | 0, 0, NULL, NULL); |
| 1708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | hpsb_register_highlevel(ð1394_highlevel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | return hpsb_register_protocol(ð1394_proto_driver); |
| 1711 | } |
| 1712 | |
| 1713 | static void __exit ether1394_exit_module (void) |
| 1714 | { |
| 1715 | hpsb_unregister_protocol(ð1394_proto_driver); |
| 1716 | hpsb_unregister_highlevel(ð1394_highlevel); |
| 1717 | kmem_cache_destroy(packet_task_cache); |
| 1718 | } |
| 1719 | |
| 1720 | module_init(ether1394_init_module); |
| 1721 | module_exit(ether1394_exit_module); |