firewire net, ipv6: IPv6 over Firewire (RFC3146) support.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki / 吉藤英明
David S. Miller
parent
6752c8db8e
commit
cb6bf35502
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@ -47,9 +47,9 @@ config FIREWIRE_NET
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tristate "IP networking over 1394"
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depends on FIREWIRE && INET
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help
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This enables IPv4 over IEEE 1394, providing IP connectivity with
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other implementations of RFC 2734 as found on several operating
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systems. Multicast support is currently limited.
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This enables IPv4/IPv6 over IEEE 1394, providing IP connectivity
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with other implementations of RFC 2734/3146 as found on several
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operating systems. Multicast support is currently limited.
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To compile this driver as a module, say M here: The module will be
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called firewire-net.
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@ -1,5 +1,6 @@
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/*
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* IPv4 over IEEE 1394, per RFC 2734
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* IPv6 over IEEE 1394, per RFC 3146
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*
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* Copyright (C) 2009 Jay Fenlason <fenlason@redhat.com>
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*
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@ -46,6 +47,7 @@
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#define IANA_SPECIFIER_ID 0x00005eU
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#define RFC2734_SW_VERSION 0x000001U
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#define RFC3146_SW_VERSION 0x000002U
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#define IEEE1394_GASP_HDR_SIZE 8
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@ -505,6 +507,9 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
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switch (ether_type) {
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case ETH_P_ARP:
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case ETH_P_IP:
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#if IS_ENABLED(CONFIG_IPV6)
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case ETH_P_IPV6:
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#endif
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break;
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default:
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goto err;
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@ -768,7 +773,12 @@ static void fwnet_receive_broadcast(struct fw_iso_context *context,
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ver = be32_to_cpu(buf_ptr[1]) & 0xffffff;
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source_node_id = be32_to_cpu(buf_ptr[0]) >> 16;
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if (specifier_id == IANA_SPECIFIER_ID && ver == RFC2734_SW_VERSION) {
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if (specifier_id == IANA_SPECIFIER_ID &&
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(ver == RFC2734_SW_VERSION
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#if IS_ENABLED(CONFIG_IPV6)
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|| ver == RFC3146_SW_VERSION
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#endif
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)) {
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buf_ptr += 2;
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length -= IEEE1394_GASP_HDR_SIZE;
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fwnet_incoming_packet(dev, buf_ptr, length, source_node_id,
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@ -971,16 +981,27 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
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u8 *p;
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int generation;
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int node_id;
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unsigned int sw_version;
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/* ptask->generation may not have been set yet */
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generation = dev->card->generation;
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smp_rmb();
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node_id = dev->card->node_id;
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switch (ptask->skb->protocol) {
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default:
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sw_version = RFC2734_SW_VERSION;
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break;
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#if IS_ENABLED(CONFIG_IPV6)
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case htons(ETH_P_IPV6):
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sw_version = RFC3146_SW_VERSION;
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#endif
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}
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p = skb_push(ptask->skb, IEEE1394_GASP_HDR_SIZE);
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put_unaligned_be32(node_id << 16 | IANA_SPECIFIER_ID >> 8, p);
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put_unaligned_be32((IANA_SPECIFIER_ID & 0xff) << 24
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| RFC2734_SW_VERSION, &p[4]);
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| sw_version, &p[4]);
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/* We should not transmit if broadcast_channel.valid == 0. */
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fw_send_request(dev->card, &ptask->transaction,
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@ -1248,6 +1269,9 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
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switch (proto) {
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case htons(ETH_P_ARP):
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case htons(ETH_P_IP):
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#if IS_ENABLED(CONFIG_IPV6)
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case htons(ETH_P_IPV6):
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#endif
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break;
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default:
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goto fail;
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@ -1490,7 +1514,7 @@ static int fwnet_probe(struct device *_dev)
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goto out;
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list_add_tail(&dev->dev_link, &fwnet_device_list);
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dev_notice(&net->dev, "IPv4 over IEEE 1394 on card %s\n",
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dev_notice(&net->dev, "IP over IEEE 1394 on card %s\n",
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dev_name(card->device));
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have_dev:
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ret = fwnet_add_peer(dev, unit, device);
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@ -1579,6 +1603,14 @@ static const struct ieee1394_device_id fwnet_id_table[] = {
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.specifier_id = IANA_SPECIFIER_ID,
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.version = RFC2734_SW_VERSION,
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},
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#if IS_ENABLED(CONFIG_IPV6)
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{
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.match_flags = IEEE1394_MATCH_SPECIFIER_ID |
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IEEE1394_MATCH_VERSION,
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.specifier_id = IANA_SPECIFIER_ID,
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.version = RFC3146_SW_VERSION,
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},
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#endif
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{ }
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};
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@ -1616,6 +1648,30 @@ static struct fw_descriptor rfc2374_unit_directory = {
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.data = rfc2374_unit_directory_data
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};
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#if IS_ENABLED(CONFIG_IPV6)
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static const u32 rfc3146_unit_directory_data[] = {
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0x00040000, /* directory_length */
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0x1200005e, /* unit_specifier_id: IANA */
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0x81000003, /* textual descriptor offset */
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0x13000002, /* unit_sw_version: RFC 3146 */
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0x81000005, /* textual descriptor offset */
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0x00030000, /* descriptor_length */
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0x00000000, /* text */
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0x00000000, /* minimal ASCII, en */
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0x49414e41, /* I A N A */
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0x00030000, /* descriptor_length */
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0x00000000, /* text */
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0x00000000, /* minimal ASCII, en */
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0x49507636, /* I P v 6 */
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};
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static struct fw_descriptor rfc3146_unit_directory = {
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.length = ARRAY_SIZE(rfc3146_unit_directory_data),
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.key = (CSR_DIRECTORY | CSR_UNIT) << 24,
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.data = rfc3146_unit_directory_data
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};
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#endif
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static int __init fwnet_init(void)
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{
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int err;
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@ -1624,11 +1680,17 @@ static int __init fwnet_init(void)
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if (err)
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return err;
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#if IS_ENABLED(CONFIG_IPV6)
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err = fw_core_add_descriptor(&rfc3146_unit_directory);
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if (err)
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goto out;
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#endif
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fwnet_packet_task_cache = kmem_cache_create("packet_task",
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sizeof(struct fwnet_packet_task), 0, 0, NULL);
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if (!fwnet_packet_task_cache) {
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err = -ENOMEM;
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goto out;
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goto out2;
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}
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err = driver_register(&fwnet_driver.driver);
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@ -1636,7 +1698,11 @@ static int __init fwnet_init(void)
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return 0;
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kmem_cache_destroy(fwnet_packet_task_cache);
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out2:
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#if IS_ENABLED(CONFIG_IPV6)
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fw_core_remove_descriptor(&rfc3146_unit_directory);
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out:
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#endif
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fw_core_remove_descriptor(&rfc2374_unit_directory);
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return err;
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@ -1647,11 +1713,14 @@ static void __exit fwnet_cleanup(void)
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{
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driver_unregister(&fwnet_driver.driver);
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kmem_cache_destroy(fwnet_packet_task_cache);
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#if IS_ENABLED(CONFIG_IPV6)
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fw_core_remove_descriptor(&rfc3146_unit_directory);
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#endif
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fw_core_remove_descriptor(&rfc2374_unit_directory);
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}
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module_exit(fwnet_cleanup);
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MODULE_AUTHOR("Jay Fenlason <fenlason@redhat.com>");
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MODULE_DESCRIPTION("IPv4 over IEEE1394 as per RFC 2734");
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MODULE_DESCRIPTION("IP over IEEE1394 as per RFC 2734/3146");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(ieee1394, fwnet_id_table);
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@ -70,6 +70,7 @@
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#include <net/snmp.h>
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#include <net/af_ieee802154.h>
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#include <net/firewire.h>
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#include <net/ipv6.h>
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#include <net/protocol.h>
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#include <net/ndisc.h>
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@ -1738,6 +1739,20 @@ static int addrconf_ifid_eui64(u8 *eui, struct net_device *dev)
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return 0;
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}
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static int addrconf_ifid_ieee1394(u8 *eui, struct net_device *dev)
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{
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union fwnet_hwaddr *ha;
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if (dev->addr_len != FWNET_ALEN)
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return -1;
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ha = (union fwnet_hwaddr *)dev->dev_addr;
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memcpy(eui, &ha->uc.uniq_id, sizeof(ha->uc.uniq_id));
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eui[0] ^= 2;
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return 0;
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}
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static int addrconf_ifid_arcnet(u8 *eui, struct net_device *dev)
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{
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/* XXX: inherit EUI-64 from other interface -- yoshfuji */
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@ -1802,6 +1817,8 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
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return addrconf_ifid_gre(eui, dev);
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case ARPHRD_IEEE802154:
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return addrconf_ifid_eui64(eui, dev);
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case ARPHRD_IEEE1394:
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return addrconf_ifid_ieee1394(eui, dev);
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}
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return -1;
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}
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@ -2643,7 +2660,8 @@ static void addrconf_dev_config(struct net_device *dev)
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(dev->type != ARPHRD_FDDI) &&
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(dev->type != ARPHRD_ARCNET) &&
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(dev->type != ARPHRD_INFINIBAND) &&
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(dev->type != ARPHRD_IEEE802154)) {
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(dev->type != ARPHRD_IEEE802154) &&
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(dev->type != ARPHRD_IEEE1394)) {
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/* Alas, we support only Ethernet autoconfiguration. */
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return;
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}
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