[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/net/802/Kconfig b/ap/os/linux/linux-3.4.x/net/802/Kconfig
new file mode 100644
index 0000000..be33d27
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/Kconfig
@@ -0,0 +1,7 @@
+config STP
+ tristate
+ select LLC
+
+config GARP
+ tristate
+ select STP
diff --git a/ap/os/linux/linux-3.4.x/net/802/Makefile b/ap/os/linux/linux-3.4.x/net/802/Makefile
new file mode 100644
index 0000000..7893d67
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/Makefile
@@ -0,0 +1,14 @@
+#
+# Makefile for the Linux 802.x protocol layers.
+#
+
+# Check the p8022 selections against net/core/Makefile.
+obj-$(CONFIG_LLC) += p8022.o psnap.o
+obj-$(CONFIG_TR) += p8022.o psnap.o tr.o
+obj-$(CONFIG_NET_FC) += fc.o
+obj-$(CONFIG_FDDI) += fddi.o
+obj-$(CONFIG_HIPPI) += hippi.o
+obj-$(CONFIG_IPX) += p8022.o psnap.o p8023.o
+obj-$(CONFIG_ATALK) += p8022.o psnap.o
+obj-$(CONFIG_STP) += stp.o
+obj-$(CONFIG_GARP) += garp.o
diff --git a/ap/os/linux/linux-3.4.x/net/802/fc.c b/ap/os/linux/linux-3.4.x/net/802/fc.c
new file mode 100644
index 0000000..b324e31
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/fc.c
@@ -0,0 +1,131 @@
+/*
+ * NET3: Fibre Channel device handling subroutines
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Vineet Abraham <vma@iol.unh.edu>
+ * v 1.0 03/22/99
+ */
+
+#include <asm/uaccess.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/fcdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+#include <linux/net.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/export.h>
+#include <net/arp.h>
+
+/*
+ * Put the headers on a Fibre Channel packet.
+ */
+
+static int fc_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len)
+{
+ struct fch_hdr *fch;
+ int hdr_len;
+
+ /*
+ * Add the 802.2 SNAP header if IP as the IPv4 code calls
+ * dev->hard_header directly.
+ */
+ if (type == ETH_P_IP || type == ETH_P_ARP)
+ {
+ struct fcllc *fcllc;
+
+ hdr_len = sizeof(struct fch_hdr) + sizeof(struct fcllc);
+ fch = (struct fch_hdr *)skb_push(skb, hdr_len);
+ fcllc = (struct fcllc *)(fch+1);
+ fcllc->dsap = fcllc->ssap = EXTENDED_SAP;
+ fcllc->llc = UI_CMD;
+ fcllc->protid[0] = fcllc->protid[1] = fcllc->protid[2] = 0x00;
+ fcllc->ethertype = htons(type);
+ }
+ else
+ {
+ hdr_len = sizeof(struct fch_hdr);
+ fch = (struct fch_hdr *)skb_push(skb, hdr_len);
+ }
+
+ if(saddr)
+ memcpy(fch->saddr,saddr,dev->addr_len);
+ else
+ memcpy(fch->saddr,dev->dev_addr,dev->addr_len);
+
+ if(daddr)
+ {
+ memcpy(fch->daddr,daddr,dev->addr_len);
+ return hdr_len;
+ }
+ return -hdr_len;
+}
+
+/*
+ * A neighbour discovery of some species (eg arp) has completed. We
+ * can now send the packet.
+ */
+
+static int fc_rebuild_header(struct sk_buff *skb)
+{
+#ifdef CONFIG_INET
+ struct fch_hdr *fch=(struct fch_hdr *)skb->data;
+ struct fcllc *fcllc=(struct fcllc *)(skb->data+sizeof(struct fch_hdr));
+ if(fcllc->ethertype != htons(ETH_P_IP)) {
+ printk("fc_rebuild_header: Don't know how to resolve type %04X addresses ?\n", ntohs(fcllc->ethertype));
+ return 0;
+ }
+ return arp_find(fch->daddr, skb);
+#else
+ return 0;
+#endif
+}
+
+static const struct header_ops fc_header_ops = {
+ .create = fc_header,
+ .rebuild = fc_rebuild_header,
+};
+
+static void fc_setup(struct net_device *dev)
+{
+ dev->header_ops = &fc_header_ops;
+ dev->type = ARPHRD_IEEE802;
+ dev->hard_header_len = FC_HLEN;
+ dev->mtu = 2024;
+ dev->addr_len = FC_ALEN;
+ dev->tx_queue_len = 100; /* Long queues on fc */
+ dev->flags = IFF_BROADCAST;
+
+ memset(dev->broadcast, 0xFF, FC_ALEN);
+}
+
+/**
+ * alloc_fcdev - Register fibre channel device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ * for this fibre channel device
+ *
+ * Fill in the fields of the device structure with fibre channel-generic values.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+struct net_device *alloc_fcdev(int sizeof_priv)
+{
+ return alloc_netdev(sizeof_priv, "fc%d", fc_setup);
+}
+EXPORT_SYMBOL(alloc_fcdev);
diff --git a/ap/os/linux/linux-3.4.x/net/802/fddi.c b/ap/os/linux/linux-3.4.x/net/802/fddi.c
new file mode 100644
index 0000000..5ab25cd
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/fddi.c
@@ -0,0 +1,214 @@
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * FDDI-type device handling.
+ *
+ * Version: @(#)fddi.c 1.0.0 08/12/96
+ *
+ * Authors: Lawrence V. Stefani, <stefani@lkg.dec.com>
+ *
+ * fddi.c is based on previous eth.c and tr.c work by
+ * Ross Biro
+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ * Mark Evans, <evansmp@uhura.aston.ac.uk>
+ * Florian La Roche, <rzsfl@rz.uni-sb.de>
+ * Alan Cox, <gw4pts@gw4pts.ampr.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Changes
+ * Alan Cox : New arp/rebuild header
+ * Maciej W. Rozycki : IPv6 support
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/fddidevice.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <net/arp.h>
+#include <net/sock.h>
+
+/*
+ * Create the FDDI MAC header for an arbitrary protocol layer
+ *
+ * saddr=NULL means use device source address
+ * daddr=NULL means leave destination address (eg unresolved arp)
+ */
+
+static int fddi_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len)
+{
+ int hl = FDDI_K_SNAP_HLEN;
+ struct fddihdr *fddi;
+
+ if(type != ETH_P_IP && type != ETH_P_IPV6 && type != ETH_P_ARP)
+ hl=FDDI_K_8022_HLEN-3;
+ fddi = (struct fddihdr *)skb_push(skb, hl);
+ fddi->fc = FDDI_FC_K_ASYNC_LLC_DEF;
+ if(type == ETH_P_IP || type == ETH_P_IPV6 || type == ETH_P_ARP)
+ {
+ fddi->hdr.llc_snap.dsap = FDDI_EXTENDED_SAP;
+ fddi->hdr.llc_snap.ssap = FDDI_EXTENDED_SAP;
+ fddi->hdr.llc_snap.ctrl = FDDI_UI_CMD;
+ fddi->hdr.llc_snap.oui[0] = 0x00;
+ fddi->hdr.llc_snap.oui[1] = 0x00;
+ fddi->hdr.llc_snap.oui[2] = 0x00;
+ fddi->hdr.llc_snap.ethertype = htons(type);
+ }
+
+ /* Set the source and destination hardware addresses */
+
+ if (saddr != NULL)
+ memcpy(fddi->saddr, saddr, dev->addr_len);
+ else
+ memcpy(fddi->saddr, dev->dev_addr, dev->addr_len);
+
+ if (daddr != NULL)
+ {
+ memcpy(fddi->daddr, daddr, dev->addr_len);
+ return hl;
+ }
+
+ return -hl;
+}
+
+
+/*
+ * Rebuild the FDDI MAC header. This is called after an ARP
+ * (or in future other address resolution) has completed on
+ * this sk_buff. We now let ARP fill in the other fields.
+ */
+
+static int fddi_rebuild_header(struct sk_buff *skb)
+{
+ struct fddihdr *fddi = (struct fddihdr *)skb->data;
+
+#ifdef CONFIG_INET
+ if (fddi->hdr.llc_snap.ethertype == htons(ETH_P_IP))
+ /* Try to get ARP to resolve the header and fill destination address */
+ return arp_find(fddi->daddr, skb);
+ else
+#endif
+ {
+ printk("%s: Don't know how to resolve type %04X addresses.\n",
+ skb->dev->name, ntohs(fddi->hdr.llc_snap.ethertype));
+ return 0;
+ }
+}
+
+
+/*
+ * Determine the packet's protocol ID and fill in skb fields.
+ * This routine is called before an incoming packet is passed
+ * up. It's used to fill in specific skb fields and to set
+ * the proper pointer to the start of packet data (skb->data).
+ */
+
+__be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+ struct fddihdr *fddi = (struct fddihdr *)skb->data;
+ __be16 type;
+
+ /*
+ * Set mac.raw field to point to FC byte, set data field to point
+ * to start of packet data. Assume 802.2 SNAP frames for now.
+ */
+
+ skb->dev = dev;
+ skb_reset_mac_header(skb); /* point to frame control (FC) */
+
+ if(fddi->hdr.llc_8022_1.dsap==0xe0)
+ {
+ skb_pull(skb, FDDI_K_8022_HLEN-3);
+ type = htons(ETH_P_802_2);
+ }
+ else
+ {
+ skb_pull(skb, FDDI_K_SNAP_HLEN); /* adjust for 21 byte header */
+ type=fddi->hdr.llc_snap.ethertype;
+ }
+
+ /* Set packet type based on destination address and flag settings */
+
+ if (*fddi->daddr & 0x01)
+ {
+ if (memcmp(fddi->daddr, dev->broadcast, FDDI_K_ALEN) == 0)
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_MULTICAST;
+ }
+
+ else if (dev->flags & IFF_PROMISC)
+ {
+ if (memcmp(fddi->daddr, dev->dev_addr, FDDI_K_ALEN))
+ skb->pkt_type = PACKET_OTHERHOST;
+ }
+
+ /* Assume 802.2 SNAP frames, for now */
+
+ return type;
+}
+
+EXPORT_SYMBOL(fddi_type_trans);
+
+int fddi_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if ((new_mtu < FDDI_K_SNAP_HLEN) || (new_mtu > FDDI_K_SNAP_DLEN))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+EXPORT_SYMBOL(fddi_change_mtu);
+
+static const struct header_ops fddi_header_ops = {
+ .create = fddi_header,
+ .rebuild = fddi_rebuild_header,
+};
+
+
+static void fddi_setup(struct net_device *dev)
+{
+ dev->header_ops = &fddi_header_ops;
+ dev->type = ARPHRD_FDDI;
+ dev->hard_header_len = FDDI_K_SNAP_HLEN+3; /* Assume 802.2 SNAP hdr len + 3 pad bytes */
+ dev->mtu = FDDI_K_SNAP_DLEN; /* Assume max payload of 802.2 SNAP frame */
+ dev->addr_len = FDDI_K_ALEN;
+ dev->tx_queue_len = 100; /* Long queues on FDDI */
+ dev->flags = IFF_BROADCAST | IFF_MULTICAST;
+
+ memset(dev->broadcast, 0xFF, FDDI_K_ALEN);
+}
+
+/**
+ * alloc_fddidev - Register FDDI device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ * for this FDDI device
+ *
+ * Fill in the fields of the device structure with FDDI-generic values.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+struct net_device *alloc_fddidev(int sizeof_priv)
+{
+ return alloc_netdev(sizeof_priv, "fddi%d", fddi_setup);
+}
+EXPORT_SYMBOL(alloc_fddidev);
+
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/net/802/garp.c b/ap/os/linux/linux-3.4.x/net/802/garp.c
new file mode 100644
index 0000000..a5c2248
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/garp.c
@@ -0,0 +1,634 @@
+/*
+ * IEEE 802.1D Generic Attribute Registration Protocol (GARP)
+ *
+ * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/llc.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <net/llc.h>
+#include <net/llc_pdu.h>
+#include <net/garp.h>
+#include <asm/unaligned.h>
+
+static unsigned int garp_join_time __read_mostly = 200;
+module_param(garp_join_time, uint, 0644);
+MODULE_PARM_DESC(garp_join_time, "Join time in ms (default 200ms)");
+MODULE_LICENSE("GPL");
+
+static const struct garp_state_trans {
+ u8 state;
+ u8 action;
+} garp_applicant_state_table[GARP_APPLICANT_MAX + 1][GARP_EVENT_MAX + 1] = {
+ [GARP_APPLICANT_VA] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_AA,
+ .action = GARP_ACTION_S_JOIN_IN },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_AA },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_LA },
+ },
+ [GARP_APPLICANT_AA] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_QA,
+ .action = GARP_ACTION_S_JOIN_IN },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_QA },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_LA },
+ },
+ [GARP_APPLICANT_QA] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_QA },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_LA },
+ },
+ [GARP_APPLICANT_LA] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_VO,
+ .action = GARP_ACTION_S_LEAVE_EMPTY },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_LA },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_LA },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_LA },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_VA },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_INVALID },
+ },
+ [GARP_APPLICANT_VP] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_AA,
+ .action = GARP_ACTION_S_JOIN_IN },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_AP },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_VO },
+ },
+ [GARP_APPLICANT_AP] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_QA,
+ .action = GARP_ACTION_S_JOIN_IN },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_QP },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_AO },
+ },
+ [GARP_APPLICANT_QP] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_QP },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_QO },
+ },
+ [GARP_APPLICANT_VO] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_AO },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_VP },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_INVALID },
+ },
+ [GARP_APPLICANT_AO] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_QO },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_AP },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_INVALID },
+ },
+ [GARP_APPLICANT_QO] = {
+ [GARP_EVENT_TRANSMIT_PDU] = { .state = GARP_APPLICANT_INVALID },
+ [GARP_EVENT_R_JOIN_IN] = { .state = GARP_APPLICANT_QO },
+ [GARP_EVENT_R_JOIN_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_LEAVE_IN] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_R_LEAVE_EMPTY] = { .state = GARP_APPLICANT_VO },
+ [GARP_EVENT_REQ_JOIN] = { .state = GARP_APPLICANT_QP },
+ [GARP_EVENT_REQ_LEAVE] = { .state = GARP_APPLICANT_INVALID },
+ },
+};
+
+static int garp_attr_cmp(const struct garp_attr *attr,
+ const void *data, u8 len, u8 type)
+{
+ if (attr->type != type)
+ return attr->type - type;
+ if (attr->dlen != len)
+ return attr->dlen - len;
+ return memcmp(attr->data, data, len);
+}
+
+static struct garp_attr *garp_attr_lookup(const struct garp_applicant *app,
+ const void *data, u8 len, u8 type)
+{
+ struct rb_node *parent = app->gid.rb_node;
+ struct garp_attr *attr;
+ int d;
+
+ while (parent) {
+ attr = rb_entry(parent, struct garp_attr, node);
+ d = garp_attr_cmp(attr, data, len, type);
+ if (d < 0)
+ parent = parent->rb_left;
+ else if (d > 0)
+ parent = parent->rb_right;
+ else
+ return attr;
+ }
+ return NULL;
+}
+
+static struct garp_attr *garp_attr_create(struct garp_applicant *app,
+ const void *data, u8 len, u8 type)
+{
+ struct rb_node *parent = NULL, **p = &app->gid.rb_node;
+ struct garp_attr *attr;
+ int d;
+
+ while (*p) {
+ parent = *p;
+ attr = rb_entry(parent, struct garp_attr, node);
+ d = garp_attr_cmp(attr, data, len, type);
+ if (d < 0)
+ p = &parent->rb_left;
+ else if (d > 0)
+ p = &parent->rb_right;
+ else {
+ /* The attribute already exists; re-use it. */
+ return attr;
+ }
+ }
+ attr = kmalloc(sizeof(*attr) + len, GFP_ATOMIC);
+ if (!attr)
+ return attr;
+ attr->state = GARP_APPLICANT_VO;
+ attr->type = type;
+ attr->dlen = len;
+ memcpy(attr->data, data, len);
+
+ rb_link_node(&attr->node, parent, p);
+ rb_insert_color(&attr->node, &app->gid);
+ return attr;
+}
+
+static void garp_attr_destroy(struct garp_applicant *app, struct garp_attr *attr)
+{
+ rb_erase(&attr->node, &app->gid);
+ kfree(attr);
+}
+
+static int garp_pdu_init(struct garp_applicant *app)
+{
+ struct sk_buff *skb;
+ struct garp_pdu_hdr *gp;
+
+#define LLC_RESERVE sizeof(struct llc_pdu_un)
+ skb = alloc_skb(app->dev->mtu + LL_RESERVED_SPACE(app->dev),
+ GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ skb->dev = app->dev;
+ skb->protocol = htons(ETH_P_802_2);
+ skb_reserve(skb, LL_RESERVED_SPACE(app->dev) + LLC_RESERVE);
+
+ gp = (struct garp_pdu_hdr *)__skb_put(skb, sizeof(*gp));
+ put_unaligned(htons(GARP_PROTOCOL_ID), &gp->protocol);
+
+ app->pdu = skb;
+ return 0;
+}
+
+static int garp_pdu_append_end_mark(struct garp_applicant *app)
+{
+ if (skb_tailroom(app->pdu) < sizeof(u8))
+ return -1;
+ *(u8 *)__skb_put(app->pdu, sizeof(u8)) = GARP_END_MARK;
+ return 0;
+}
+
+static void garp_pdu_queue(struct garp_applicant *app)
+{
+ if (!app->pdu)
+ return;
+
+ garp_pdu_append_end_mark(app);
+ garp_pdu_append_end_mark(app);
+
+ llc_pdu_header_init(app->pdu, LLC_PDU_TYPE_U, LLC_SAP_BSPAN,
+ LLC_SAP_BSPAN, LLC_PDU_CMD);
+ llc_pdu_init_as_ui_cmd(app->pdu);
+ llc_mac_hdr_init(app->pdu, app->dev->dev_addr,
+ app->app->proto.group_address);
+
+ skb_queue_tail(&app->queue, app->pdu);
+ app->pdu = NULL;
+}
+
+static void garp_queue_xmit(struct garp_applicant *app)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&app->queue)))
+ dev_queue_xmit(skb);
+}
+
+static int garp_pdu_append_msg(struct garp_applicant *app, u8 attrtype)
+{
+ struct garp_msg_hdr *gm;
+
+ if (skb_tailroom(app->pdu) < sizeof(*gm))
+ return -1;
+ gm = (struct garp_msg_hdr *)__skb_put(app->pdu, sizeof(*gm));
+ gm->attrtype = attrtype;
+ garp_cb(app->pdu)->cur_type = attrtype;
+ return 0;
+}
+
+static int garp_pdu_append_attr(struct garp_applicant *app,
+ const struct garp_attr *attr,
+ enum garp_attr_event event)
+{
+ struct garp_attr_hdr *ga;
+ unsigned int len;
+ int err;
+again:
+ if (!app->pdu) {
+ err = garp_pdu_init(app);
+ if (err < 0)
+ return err;
+ }
+
+ if (garp_cb(app->pdu)->cur_type != attr->type) {
+ if (garp_cb(app->pdu)->cur_type &&
+ garp_pdu_append_end_mark(app) < 0)
+ goto queue;
+ if (garp_pdu_append_msg(app, attr->type) < 0)
+ goto queue;
+ }
+
+ len = sizeof(*ga) + attr->dlen;
+ if (skb_tailroom(app->pdu) < len)
+ goto queue;
+ ga = (struct garp_attr_hdr *)__skb_put(app->pdu, len);
+ ga->len = len;
+ ga->event = event;
+ memcpy(ga->data, attr->data, attr->dlen);
+ return 0;
+
+queue:
+ garp_pdu_queue(app);
+ goto again;
+}
+
+static void garp_attr_event(struct garp_applicant *app,
+ struct garp_attr *attr, enum garp_event event)
+{
+ enum garp_applicant_state state;
+
+ state = garp_applicant_state_table[attr->state][event].state;
+ if (state == GARP_APPLICANT_INVALID)
+ return;
+
+ switch (garp_applicant_state_table[attr->state][event].action) {
+ case GARP_ACTION_NONE:
+ break;
+ case GARP_ACTION_S_JOIN_IN:
+ /* When appending the attribute fails, don't update state in
+ * order to retry on next TRANSMIT_PDU event. */
+ if (garp_pdu_append_attr(app, attr, GARP_JOIN_IN) < 0)
+ return;
+ break;
+ case GARP_ACTION_S_LEAVE_EMPTY:
+ garp_pdu_append_attr(app, attr, GARP_LEAVE_EMPTY);
+ /* As a pure applicant, sending a leave message implies that
+ * the attribute was unregistered and can be destroyed. */
+ garp_attr_destroy(app, attr);
+ return;
+ default:
+ WARN_ON(1);
+ }
+
+ attr->state = state;
+}
+
+int garp_request_join(const struct net_device *dev,
+ const struct garp_application *appl,
+ const void *data, u8 len, u8 type)
+{
+ struct garp_port *port = rtnl_dereference(dev->garp_port);
+ struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]);
+ struct garp_attr *attr;
+
+ spin_lock_bh(&app->lock);
+ attr = garp_attr_create(app, data, len, type);
+ if (!attr) {
+ spin_unlock_bh(&app->lock);
+ return -ENOMEM;
+ }
+ garp_attr_event(app, attr, GARP_EVENT_REQ_JOIN);
+ spin_unlock_bh(&app->lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(garp_request_join);
+
+void garp_request_leave(const struct net_device *dev,
+ const struct garp_application *appl,
+ const void *data, u8 len, u8 type)
+{
+ struct garp_port *port = rtnl_dereference(dev->garp_port);
+ struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]);
+ struct garp_attr *attr;
+
+ spin_lock_bh(&app->lock);
+ attr = garp_attr_lookup(app, data, len, type);
+ if (!attr) {
+ spin_unlock_bh(&app->lock);
+ return;
+ }
+ garp_attr_event(app, attr, GARP_EVENT_REQ_LEAVE);
+ spin_unlock_bh(&app->lock);
+}
+EXPORT_SYMBOL_GPL(garp_request_leave);
+
+static void garp_gid_event(struct garp_applicant *app, enum garp_event event)
+{
+ struct rb_node *node, *next;
+ struct garp_attr *attr;
+
+ for (node = rb_first(&app->gid);
+ next = node ? rb_next(node) : NULL, node != NULL;
+ node = next) {
+ attr = rb_entry(node, struct garp_attr, node);
+ garp_attr_event(app, attr, event);
+ }
+}
+
+static void garp_join_timer_arm(struct garp_applicant *app)
+{
+ unsigned long delay;
+
+ delay = (u64)msecs_to_jiffies(garp_join_time) * net_random() >> 32;
+ mod_timer(&app->join_timer, jiffies + delay);
+}
+
+static void garp_join_timer(unsigned long data)
+{
+ struct garp_applicant *app = (struct garp_applicant *)data;
+
+ spin_lock(&app->lock);
+ garp_gid_event(app, GARP_EVENT_TRANSMIT_PDU);
+ garp_pdu_queue(app);
+ spin_unlock(&app->lock);
+
+ garp_queue_xmit(app);
+ garp_join_timer_arm(app);
+}
+
+static int garp_pdu_parse_end_mark(struct sk_buff *skb)
+{
+ if (!pskb_may_pull(skb, sizeof(u8)))
+ return -1;
+ if (*skb->data == GARP_END_MARK) {
+ skb_pull(skb, sizeof(u8));
+ return -1;
+ }
+ return 0;
+}
+
+static int garp_pdu_parse_attr(struct garp_applicant *app, struct sk_buff *skb,
+ u8 attrtype)
+{
+ const struct garp_attr_hdr *ga;
+ struct garp_attr *attr;
+ enum garp_event event;
+ unsigned int dlen;
+
+ if (!pskb_may_pull(skb, sizeof(*ga)))
+ return -1;
+ ga = (struct garp_attr_hdr *)skb->data;
+ if (ga->len < sizeof(*ga))
+ return -1;
+
+ if (!pskb_may_pull(skb, ga->len))
+ return -1;
+ skb_pull(skb, ga->len);
+ dlen = sizeof(*ga) - ga->len;
+
+ if (attrtype > app->app->maxattr)
+ return 0;
+
+ switch (ga->event) {
+ case GARP_LEAVE_ALL:
+ if (dlen != 0)
+ return -1;
+ garp_gid_event(app, GARP_EVENT_R_LEAVE_EMPTY);
+ return 0;
+ case GARP_JOIN_EMPTY:
+ event = GARP_EVENT_R_JOIN_EMPTY;
+ break;
+ case GARP_JOIN_IN:
+ event = GARP_EVENT_R_JOIN_IN;
+ break;
+ case GARP_LEAVE_EMPTY:
+ event = GARP_EVENT_R_LEAVE_EMPTY;
+ break;
+ case GARP_EMPTY:
+ event = GARP_EVENT_R_EMPTY;
+ break;
+ default:
+ return 0;
+ }
+
+ if (dlen == 0)
+ return -1;
+ attr = garp_attr_lookup(app, ga->data, dlen, attrtype);
+ if (attr == NULL)
+ return 0;
+ garp_attr_event(app, attr, event);
+ return 0;
+}
+
+static int garp_pdu_parse_msg(struct garp_applicant *app, struct sk_buff *skb)
+{
+ const struct garp_msg_hdr *gm;
+
+ if (!pskb_may_pull(skb, sizeof(*gm)))
+ return -1;
+ gm = (struct garp_msg_hdr *)skb->data;
+ if (gm->attrtype == 0)
+ return -1;
+ skb_pull(skb, sizeof(*gm));
+
+ while (skb->len > 0) {
+ if (garp_pdu_parse_attr(app, skb, gm->attrtype) < 0)
+ return -1;
+ if (garp_pdu_parse_end_mark(skb) < 0)
+ break;
+ }
+ return 0;
+}
+
+static void garp_pdu_rcv(const struct stp_proto *proto, struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct garp_application *appl = proto->data;
+ struct garp_port *port;
+ struct garp_applicant *app;
+ const struct garp_pdu_hdr *gp;
+
+ port = rcu_dereference(dev->garp_port);
+ if (!port)
+ goto err;
+ app = rcu_dereference(port->applicants[appl->type]);
+ if (!app)
+ goto err;
+
+ if (!pskb_may_pull(skb, sizeof(*gp)))
+ goto err;
+ gp = (struct garp_pdu_hdr *)skb->data;
+ if (get_unaligned(&gp->protocol) != htons(GARP_PROTOCOL_ID))
+ goto err;
+ skb_pull(skb, sizeof(*gp));
+
+ spin_lock(&app->lock);
+ while (skb->len > 0) {
+ if (garp_pdu_parse_msg(app, skb) < 0)
+ break;
+ if (garp_pdu_parse_end_mark(skb) < 0)
+ break;
+ }
+ spin_unlock(&app->lock);
+err:
+ kfree_skb(skb);
+}
+
+static int garp_init_port(struct net_device *dev)
+{
+ struct garp_port *port;
+
+ port = kzalloc(sizeof(*port), GFP_KERNEL);
+ if (!port)
+ return -ENOMEM;
+ rcu_assign_pointer(dev->garp_port, port);
+ return 0;
+}
+
+static void garp_release_port(struct net_device *dev)
+{
+ struct garp_port *port = rtnl_dereference(dev->garp_port);
+ unsigned int i;
+
+ for (i = 0; i <= GARP_APPLICATION_MAX; i++) {
+ if (rtnl_dereference(port->applicants[i]))
+ return;
+ }
+ RCU_INIT_POINTER(dev->garp_port, NULL);
+ kfree_rcu(port, rcu);
+}
+
+int garp_init_applicant(struct net_device *dev, struct garp_application *appl)
+{
+ struct garp_applicant *app;
+ int err;
+
+ ASSERT_RTNL();
+
+ if (!rtnl_dereference(dev->garp_port)) {
+ err = garp_init_port(dev);
+ if (err < 0)
+ goto err1;
+ }
+
+ err = -ENOMEM;
+ app = kzalloc(sizeof(*app), GFP_KERNEL);
+ if (!app)
+ goto err2;
+
+ err = dev_mc_add(dev, appl->proto.group_address);
+ if (err < 0)
+ goto err3;
+
+ app->dev = dev;
+ app->app = appl;
+ app->gid = RB_ROOT;
+ spin_lock_init(&app->lock);
+ skb_queue_head_init(&app->queue);
+ rcu_assign_pointer(dev->garp_port->applicants[appl->type], app);
+ setup_timer(&app->join_timer, garp_join_timer, (unsigned long)app);
+ garp_join_timer_arm(app);
+ return 0;
+
+err3:
+ kfree(app);
+err2:
+ garp_release_port(dev);
+err1:
+ return err;
+}
+EXPORT_SYMBOL_GPL(garp_init_applicant);
+
+void garp_uninit_applicant(struct net_device *dev, struct garp_application *appl)
+{
+ struct garp_port *port = rtnl_dereference(dev->garp_port);
+ struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]);
+
+ ASSERT_RTNL();
+
+ RCU_INIT_POINTER(port->applicants[appl->type], NULL);
+
+ /* Delete timer and generate a final TRANSMIT_PDU event to flush out
+ * all pending messages before the applicant is gone. */
+ del_timer_sync(&app->join_timer);
+ garp_gid_event(app, GARP_EVENT_TRANSMIT_PDU);
+ garp_pdu_queue(app);
+ garp_queue_xmit(app);
+
+ dev_mc_del(dev, appl->proto.group_address);
+ kfree_rcu(app, rcu);
+ garp_release_port(dev);
+}
+EXPORT_SYMBOL_GPL(garp_uninit_applicant);
+
+int garp_register_application(struct garp_application *appl)
+{
+ appl->proto.rcv = garp_pdu_rcv;
+ appl->proto.data = appl;
+ return stp_proto_register(&appl->proto);
+}
+EXPORT_SYMBOL_GPL(garp_register_application);
+
+void garp_unregister_application(struct garp_application *appl)
+{
+ stp_proto_unregister(&appl->proto);
+}
+EXPORT_SYMBOL_GPL(garp_unregister_application);
diff --git a/ap/os/linux/linux-3.4.x/net/802/hippi.c b/ap/os/linux/linux-3.4.x/net/802/hippi.c
new file mode 100644
index 0000000..056794e
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/hippi.c
@@ -0,0 +1,234 @@
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * HIPPI-type device handling.
+ *
+ * Version: @(#)hippi.c 1.0.0 05/29/97
+ *
+ * Authors: Ross Biro
+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ * Mark Evans, <evansmp@uhura.aston.ac.uk>
+ * Florian La Roche, <rzsfl@rz.uni-sb.de>
+ * Alan Cox, <gw4pts@gw4pts.ampr.org>
+ * Jes Sorensen, <Jes.Sorensen@cern.ch>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/hippidevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <net/arp.h>
+#include <net/sock.h>
+#include <asm/uaccess.h>
+
+/*
+ * Create the HIPPI MAC header for an arbitrary protocol layer
+ *
+ * saddr=NULL means use device source address
+ * daddr=NULL means leave destination address (eg unresolved arp)
+ */
+
+static int hippi_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len)
+{
+ struct hippi_hdr *hip = (struct hippi_hdr *)skb_push(skb, HIPPI_HLEN);
+ struct hippi_cb *hcb = (struct hippi_cb *) skb->cb;
+
+ if (!len){
+ len = skb->len - HIPPI_HLEN;
+ printk("hippi_header(): length not supplied\n");
+ }
+
+ /*
+ * Due to the stupidity of the little endian byte-order we
+ * have to set the fp field this way.
+ */
+ hip->fp.fixed = htonl(0x04800018);
+ hip->fp.d2_size = htonl(len + 8);
+ hip->le.fc = 0;
+ hip->le.double_wide = 0; /* only HIPPI 800 for the time being */
+ hip->le.message_type = 0; /* Data PDU */
+
+ hip->le.dest_addr_type = 2; /* 12 bit SC address */
+ hip->le.src_addr_type = 2; /* 12 bit SC address */
+
+ memcpy(hip->le.src_switch_addr, dev->dev_addr + 3, 3);
+ memset(&hip->le.reserved, 0, 16);
+
+ hip->snap.dsap = HIPPI_EXTENDED_SAP;
+ hip->snap.ssap = HIPPI_EXTENDED_SAP;
+ hip->snap.ctrl = HIPPI_UI_CMD;
+ hip->snap.oui[0] = 0x00;
+ hip->snap.oui[1] = 0x00;
+ hip->snap.oui[2] = 0x00;
+ hip->snap.ethertype = htons(type);
+
+ if (daddr)
+ {
+ memcpy(hip->le.dest_switch_addr, daddr + 3, 3);
+ memcpy(&hcb->ifield, daddr + 2, 4);
+ return HIPPI_HLEN;
+ }
+ hcb->ifield = 0;
+ return -((int)HIPPI_HLEN);
+}
+
+
+/*
+ * Rebuild the HIPPI MAC header. This is called after an ARP has
+ * completed on this sk_buff. We now let ARP fill in the other fields.
+ */
+
+static int hippi_rebuild_header(struct sk_buff *skb)
+{
+ struct hippi_hdr *hip = (struct hippi_hdr *)skb->data;
+
+ /*
+ * Only IP is currently supported
+ */
+
+ if(hip->snap.ethertype != htons(ETH_P_IP))
+ {
+ printk(KERN_DEBUG "%s: unable to resolve type %X addresses.\n",skb->dev->name,ntohs(hip->snap.ethertype));
+ return 0;
+ }
+
+ /*
+ * We don't support dynamic ARP on HIPPI, but we use the ARP
+ * static ARP tables to hold the I-FIELDs.
+ */
+ return arp_find(hip->le.daddr, skb);
+}
+
+
+/*
+ * Determine the packet's protocol ID.
+ */
+
+__be16 hippi_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+ struct hippi_hdr *hip;
+
+ /*
+ * This is actually wrong ... question is if we really should
+ * set the raw address here.
+ */
+ skb->dev = dev;
+ skb_reset_mac_header(skb);
+ hip = (struct hippi_hdr *)skb_mac_header(skb);
+ skb_pull(skb, HIPPI_HLEN);
+
+ /*
+ * No fancy promisc stuff here now.
+ */
+
+ return hip->snap.ethertype;
+}
+
+EXPORT_SYMBOL(hippi_type_trans);
+
+int hippi_change_mtu(struct net_device *dev, int new_mtu)
+{
+ /*
+ * HIPPI's got these nice large MTUs.
+ */
+ if ((new_mtu < 68) || (new_mtu > 65280))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+EXPORT_SYMBOL(hippi_change_mtu);
+
+/*
+ * For HIPPI we will actually use the lower 4 bytes of the hardware
+ * address as the I-FIELD rather than the actual hardware address.
+ */
+int hippi_mac_addr(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+ if (netif_running(dev))
+ return -EBUSY;
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ return 0;
+}
+EXPORT_SYMBOL(hippi_mac_addr);
+
+int hippi_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
+{
+ /* Never send broadcast/multicast ARP messages */
+ p->mcast_probes = 0;
+
+ /* In IPv6 unicast probes are valid even on NBMA,
+ * because they are encapsulated in normal IPv6 protocol.
+ * Should be a generic flag.
+ */
+ if (p->tbl->family != AF_INET6)
+ p->ucast_probes = 0;
+ return 0;
+}
+EXPORT_SYMBOL(hippi_neigh_setup_dev);
+
+static const struct header_ops hippi_header_ops = {
+ .create = hippi_header,
+ .rebuild = hippi_rebuild_header,
+};
+
+
+static void hippi_setup(struct net_device *dev)
+{
+ dev->header_ops = &hippi_header_ops;
+
+ /*
+ * We don't support HIPPI `ARP' for the time being, and probably
+ * never will unless someone else implements it. However we
+ * still need a fake ARPHRD to make ifconfig and friends play ball.
+ */
+ dev->type = ARPHRD_HIPPI;
+ dev->hard_header_len = HIPPI_HLEN;
+ dev->mtu = 65280;
+ dev->addr_len = HIPPI_ALEN;
+ dev->tx_queue_len = 25 /* 5 */;
+ memset(dev->broadcast, 0xFF, HIPPI_ALEN);
+
+
+ /*
+ * HIPPI doesn't support broadcast+multicast and we only use
+ * static ARP tables. ARP is disabled by hippi_neigh_setup_dev.
+ */
+ dev->flags = 0;
+}
+
+/**
+ * alloc_hippi_dev - Register HIPPI device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ * for this HIPPI device
+ *
+ * Fill in the fields of the device structure with HIPPI-generic values.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+
+struct net_device *alloc_hippi_dev(int sizeof_priv)
+{
+ return alloc_netdev(sizeof_priv, "hip%d", hippi_setup);
+}
+
+EXPORT_SYMBOL(alloc_hippi_dev);
diff --git a/ap/os/linux/linux-3.4.x/net/802/p8022.c b/ap/os/linux/linux-3.4.x/net/802/p8022.c
new file mode 100644
index 0000000..7f353c4
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/p8022.c
@@ -0,0 +1,67 @@
+/*
+ * NET3: Support for 802.2 demultiplexing off Ethernet (Token ring
+ * is kept separate see p8022tr.c)
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Demultiplex 802.2 encoded protocols. We match the entry by the
+ * SSAP/DSAP pair and then deliver to the registered datalink that
+ * matches. The control byte is ignored and handling of such items
+ * is up to the routine passed the frame.
+ *
+ * Unlike the 802.3 datalink we have a list of 802.2 entries as
+ * there are multiple protocols to demux. The list is currently
+ * short (3 or 4 entries at most). The current demux assumes this.
+ */
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <net/datalink.h>
+#include <linux/mm.h>
+#include <linux/in.h>
+#include <linux/init.h>
+#include <net/llc.h>
+#include <net/p8022.h>
+
+static int p8022_request(struct datalink_proto *dl, struct sk_buff *skb,
+ unsigned char *dest)
+{
+ llc_build_and_send_ui_pkt(dl->sap, skb, dest, dl->sap->laddr.lsap);
+ return 0;
+}
+
+struct datalink_proto *register_8022_client(unsigned char type,
+ int (*func)(struct sk_buff *skb,
+ struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev))
+{
+ struct datalink_proto *proto;
+
+ proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
+ if (proto) {
+ proto->type[0] = type;
+ proto->header_length = 3;
+ proto->request = p8022_request;
+ proto->sap = llc_sap_open(type, func);
+ if (!proto->sap) {
+ kfree(proto);
+ proto = NULL;
+ }
+ }
+ return proto;
+}
+
+void unregister_8022_client(struct datalink_proto *proto)
+{
+ llc_sap_put(proto->sap);
+ kfree(proto);
+}
+
+EXPORT_SYMBOL(register_8022_client);
+EXPORT_SYMBOL(unregister_8022_client);
+
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/net/802/p8023.c b/ap/os/linux/linux-3.4.x/net/802/p8023.c
new file mode 100644
index 0000000..1256a40
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/p8023.c
@@ -0,0 +1,64 @@
+/*
+ * NET3: 802.3 data link hooks used for IPX 802.3
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * 802.3 isn't really a protocol data link layer. Some old IPX stuff
+ * uses it however. Note that there is only one 802.3 protocol layer
+ * in the system. We don't currently support different protocols
+ * running raw 802.3 on different devices. Thankfully nobody else
+ * has done anything like the old IPX.
+ */
+
+#include <linux/in.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+
+#include <net/datalink.h>
+#include <net/p8022.h>
+
+/*
+ * Place an 802.3 header on a packet. The driver will do the mac
+ * addresses, we just need to give it the buffer length.
+ */
+static int p8023_request(struct datalink_proto *dl,
+ struct sk_buff *skb, unsigned char *dest_node)
+{
+ struct net_device *dev = skb->dev;
+
+ dev_hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
+ return dev_queue_xmit(skb);
+}
+
+/*
+ * Create an 802.3 client. Note there can be only one 802.3 client
+ */
+struct datalink_proto *make_8023_client(void)
+{
+ struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
+
+ if (proto) {
+ proto->header_length = 0;
+ proto->request = p8023_request;
+ }
+ return proto;
+}
+
+/*
+ * Destroy the 802.3 client.
+ */
+void destroy_8023_client(struct datalink_proto *dl)
+{
+ kfree(dl);
+}
+
+EXPORT_SYMBOL(destroy_8023_client);
+EXPORT_SYMBOL(make_8023_client);
+
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/net/802/psnap.c b/ap/os/linux/linux-3.4.x/net/802/psnap.c
new file mode 100644
index 0000000..db6baf7
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/psnap.c
@@ -0,0 +1,167 @@
+/*
+ * SNAP data link layer. Derived from 802.2
+ *
+ * Alan Cox <alan@lxorguk.ukuu.org.uk>,
+ * from the 802.2 layer by Greg Page.
+ * Merged in additions from Greg Page's psnap.c.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <net/datalink.h>
+#include <net/llc.h>
+#include <net/psnap.h>
+#include <linux/mm.h>
+#include <linux/in.h>
+#include <linux/init.h>
+#include <linux/rculist.h>
+
+static LIST_HEAD(snap_list);
+static DEFINE_SPINLOCK(snap_lock);
+static struct llc_sap *snap_sap;
+
+/*
+ * Find a snap client by matching the 5 bytes.
+ */
+static struct datalink_proto *find_snap_client(const unsigned char *desc)
+{
+ struct datalink_proto *proto = NULL, *p;
+
+ list_for_each_entry_rcu(p, &snap_list, node) {
+ if (!memcmp(p->type, desc, 5)) {
+ proto = p;
+ break;
+ }
+ }
+ return proto;
+}
+
+/*
+ * A SNAP packet has arrived
+ */
+static int snap_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev)
+{
+ int rc = 1;
+ struct datalink_proto *proto;
+ static struct packet_type snap_packet_type = {
+ .type = cpu_to_be16(ETH_P_SNAP),
+ };
+
+ if (unlikely(!pskb_may_pull(skb, 5)))
+ goto drop;
+
+ rcu_read_lock();
+ proto = find_snap_client(skb_transport_header(skb));
+ if (proto) {
+ /* Pass the frame on. */
+ skb->transport_header += 5;
+ skb_pull_rcsum(skb, 5);
+ rc = proto->rcvfunc(skb, dev, &snap_packet_type, orig_dev);
+ }
+ rcu_read_unlock();
+
+ if (unlikely(!proto))
+ goto drop;
+
+out:
+ return rc;
+
+drop:
+ kfree_skb(skb);
+ goto out;
+}
+
+/*
+ * Put a SNAP header on a frame and pass to 802.2
+ */
+static int snap_request(struct datalink_proto *dl,
+ struct sk_buff *skb, u8 *dest)
+{
+ memcpy(skb_push(skb, 5), dl->type, 5);
+ llc_build_and_send_ui_pkt(snap_sap, skb, dest, snap_sap->laddr.lsap);
+ return 0;
+}
+
+/*
+ * Set up the SNAP layer
+ */
+EXPORT_SYMBOL(register_snap_client);
+EXPORT_SYMBOL(unregister_snap_client);
+
+static const char snap_err_msg[] __initconst =
+ KERN_CRIT "SNAP - unable to register with 802.2\n";
+
+static int __init snap_init(void)
+{
+ snap_sap = llc_sap_open(0xAA, snap_rcv);
+ if (!snap_sap) {
+ printk(snap_err_msg);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+module_init(snap_init);
+
+static void __exit snap_exit(void)
+{
+ llc_sap_put(snap_sap);
+}
+
+module_exit(snap_exit);
+
+
+/*
+ * Register SNAP clients. We don't yet use this for IP.
+ */
+struct datalink_proto *register_snap_client(const unsigned char *desc,
+ int (*rcvfunc)(struct sk_buff *,
+ struct net_device *,
+ struct packet_type *,
+ struct net_device *))
+{
+ struct datalink_proto *proto = NULL;
+
+ spin_lock_bh(&snap_lock);
+
+ if (find_snap_client(desc))
+ goto out;
+
+ proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
+ if (proto) {
+ memcpy(proto->type, desc, 5);
+ proto->rcvfunc = rcvfunc;
+ proto->header_length = 5 + 3; /* snap + 802.2 */
+ proto->request = snap_request;
+ list_add_rcu(&proto->node, &snap_list);
+ }
+out:
+ spin_unlock_bh(&snap_lock);
+
+ return proto;
+}
+
+/*
+ * Unregister SNAP clients. Protocols no longer want to play with us ...
+ */
+void unregister_snap_client(struct datalink_proto *proto)
+{
+ spin_lock_bh(&snap_lock);
+ list_del_rcu(&proto->node);
+ spin_unlock_bh(&snap_lock);
+
+ synchronize_net();
+
+ kfree(proto);
+}
+
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/net/802/stp.c b/ap/os/linux/linux-3.4.x/net/802/stp.c
new file mode 100644
index 0000000..15540b7
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/stp.c
@@ -0,0 +1,104 @@
+/*
+ * STP SAP demux
+ *
+ * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+#include <linux/mutex.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/llc.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <net/llc.h>
+#include <net/llc_pdu.h>
+#include <net/stp.h>
+
+/* 01:80:c2:00:00:20 - 01:80:c2:00:00:2F */
+#define GARP_ADDR_MIN 0x20
+#define GARP_ADDR_MAX 0x2F
+#define GARP_ADDR_RANGE (GARP_ADDR_MAX - GARP_ADDR_MIN)
+
+static const struct stp_proto __rcu *garp_protos[GARP_ADDR_RANGE + 1] __read_mostly;
+static const struct stp_proto __rcu *stp_proto __read_mostly;
+
+static struct llc_sap *sap __read_mostly;
+static unsigned int sap_registered;
+static DEFINE_MUTEX(stp_proto_mutex);
+
+/* Called under rcu_read_lock from LLC */
+static int stp_pdu_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev)
+{
+ const struct ethhdr *eh = eth_hdr(skb);
+ const struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
+ const struct stp_proto *proto;
+
+ if (pdu->ssap != LLC_SAP_BSPAN ||
+ pdu->dsap != LLC_SAP_BSPAN ||
+ pdu->ctrl_1 != LLC_PDU_TYPE_U)
+ goto err;
+
+ if (eh->h_dest[5] >= GARP_ADDR_MIN && eh->h_dest[5] <= GARP_ADDR_MAX) {
+ proto = rcu_dereference(garp_protos[eh->h_dest[5] -
+ GARP_ADDR_MIN]);
+ if (proto &&
+ compare_ether_addr(eh->h_dest, proto->group_address))
+ goto err;
+ } else
+ proto = rcu_dereference(stp_proto);
+
+ if (!proto)
+ goto err;
+
+ proto->rcv(proto, skb, dev);
+ return 0;
+
+err:
+ kfree_skb(skb);
+ return 0;
+}
+
+int stp_proto_register(const struct stp_proto *proto)
+{
+ int err = 0;
+
+ mutex_lock(&stp_proto_mutex);
+ if (sap_registered++ == 0) {
+ sap = llc_sap_open(LLC_SAP_BSPAN, stp_pdu_rcv);
+ if (!sap) {
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+ if (is_zero_ether_addr(proto->group_address))
+ rcu_assign_pointer(stp_proto, proto);
+ else
+ rcu_assign_pointer(garp_protos[proto->group_address[5] -
+ GARP_ADDR_MIN], proto);
+out:
+ mutex_unlock(&stp_proto_mutex);
+ return err;
+}
+EXPORT_SYMBOL_GPL(stp_proto_register);
+
+void stp_proto_unregister(const struct stp_proto *proto)
+{
+ mutex_lock(&stp_proto_mutex);
+ if (is_zero_ether_addr(proto->group_address))
+ RCU_INIT_POINTER(stp_proto, NULL);
+ else
+ RCU_INIT_POINTER(garp_protos[proto->group_address[5] -
+ GARP_ADDR_MIN], NULL);
+ synchronize_rcu();
+
+ if (--sap_registered == 0)
+ llc_sap_put(sap);
+ mutex_unlock(&stp_proto_mutex);
+}
+EXPORT_SYMBOL_GPL(stp_proto_unregister);
+
+MODULE_LICENSE("GPL");
diff --git a/ap/os/linux/linux-3.4.x/net/802/tr.c b/ap/os/linux/linux-3.4.x/net/802/tr.c
new file mode 100644
index 0000000..b9a3a14
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/802/tr.c
@@ -0,0 +1,676 @@
+/*
+ * NET3: Token ring device handling subroutines
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Fixes: 3 Feb 97 Paul Norton <pnorton@cts.com> Minor routing fixes.
+ * Added rif table to /proc/net/tr_rif and rif timeout to
+ * /proc/sys/net/token-ring/rif_timeout.
+ * 22 Jun 98 Paul Norton <p.norton@computer.org> Rearranged
+ * tr_header and tr_type_trans to handle passing IPX SNAP and
+ * 802.2 through the correct layers. Eliminated tr_reformat.
+ *
+ */
+
+#include <asm/uaccess.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/trdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+#include <linux/net.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <linux/sysctl.h>
+#include <linux/slab.h>
+#include <net/arp.h>
+#include <net/net_namespace.h>
+
+static void tr_add_rif_info(struct trh_hdr *trh, struct net_device *dev);
+static void rif_check_expire(unsigned long dummy);
+
+#define TR_SR_DEBUG 0
+
+/*
+ * Each RIF entry we learn is kept this way
+ */
+
+struct rif_cache {
+ unsigned char addr[TR_ALEN];
+ int iface;
+ __be16 rcf;
+ __be16 rseg[8];
+ struct rif_cache *next;
+ unsigned long last_used;
+ unsigned char local_ring;
+};
+
+#define RIF_TABLE_SIZE 32
+
+/*
+ * We hash the RIF cache 32 ways. We do after all have to look it
+ * up a lot.
+ */
+
+static struct rif_cache *rif_table[RIF_TABLE_SIZE];
+
+static DEFINE_SPINLOCK(rif_lock);
+
+
+/*
+ * Garbage disposal timer.
+ */
+
+static struct timer_list rif_timer;
+
+static int sysctl_tr_rif_timeout = 60*10*HZ;
+
+static inline unsigned long rif_hash(const unsigned char *addr)
+{
+ unsigned long x;
+
+ x = addr[0];
+ x = (x << 2) ^ addr[1];
+ x = (x << 2) ^ addr[2];
+ x = (x << 2) ^ addr[3];
+ x = (x << 2) ^ addr[4];
+ x = (x << 2) ^ addr[5];
+
+ x ^= x >> 8;
+
+ return x & (RIF_TABLE_SIZE - 1);
+}
+
+/*
+ * Put the headers on a token ring packet. Token ring source routing
+ * makes this a little more exciting than on ethernet.
+ */
+
+static int tr_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len)
+{
+ struct trh_hdr *trh;
+ int hdr_len;
+
+ /*
+ * Add the 802.2 SNAP header if IP as the IPv4/IPv6 code calls
+ * dev->hard_header directly.
+ */
+ if (type == ETH_P_IP || type == ETH_P_IPV6 || type == ETH_P_ARP)
+ {
+ struct trllc *trllc;
+
+ hdr_len = sizeof(struct trh_hdr) + sizeof(struct trllc);
+ trh = (struct trh_hdr *)skb_push(skb, hdr_len);
+ trllc = (struct trllc *)(trh+1);
+ trllc->dsap = trllc->ssap = EXTENDED_SAP;
+ trllc->llc = UI_CMD;
+ trllc->protid[0] = trllc->protid[1] = trllc->protid[2] = 0x00;
+ trllc->ethertype = htons(type);
+ }
+ else
+ {
+ hdr_len = sizeof(struct trh_hdr);
+ trh = (struct trh_hdr *)skb_push(skb, hdr_len);
+ }
+
+ trh->ac=AC;
+ trh->fc=LLC_FRAME;
+
+ if(saddr)
+ memcpy(trh->saddr,saddr,dev->addr_len);
+ else
+ memcpy(trh->saddr,dev->dev_addr,dev->addr_len);
+
+ /*
+ * Build the destination and then source route the frame
+ */
+
+ if(daddr)
+ {
+ memcpy(trh->daddr,daddr,dev->addr_len);
+ tr_source_route(skb, trh, dev);
+ return hdr_len;
+ }
+
+ return -hdr_len;
+}
+
+/*
+ * A neighbour discovery of some species (eg arp) has completed. We
+ * can now send the packet.
+ */
+
+static int tr_rebuild_header(struct sk_buff *skb)
+{
+ struct trh_hdr *trh=(struct trh_hdr *)skb->data;
+ struct trllc *trllc=(struct trllc *)(skb->data+sizeof(struct trh_hdr));
+ struct net_device *dev = skb->dev;
+
+ /*
+ * FIXME: We don't yet support IPv6 over token rings
+ */
+
+ if(trllc->ethertype != htons(ETH_P_IP)) {
+ printk("tr_rebuild_header: Don't know how to resolve type %04X addresses ?\n", ntohs(trllc->ethertype));
+ return 0;
+ }
+
+#ifdef CONFIG_INET
+ if(arp_find(trh->daddr, skb)) {
+ return 1;
+ }
+ else
+#endif
+ {
+ tr_source_route(skb,trh,dev);
+ return 0;
+ }
+}
+
+/*
+ * Some of this is a bit hackish. We intercept RIF information
+ * used for source routing. We also grab IP directly and don't feed
+ * it via SNAP.
+ */
+
+__be16 tr_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+
+ struct trh_hdr *trh;
+ struct trllc *trllc;
+ unsigned riflen=0;
+
+ skb->dev = dev;
+ skb_reset_mac_header(skb);
+ trh = tr_hdr(skb);
+
+ if(trh->saddr[0] & TR_RII)
+ riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
+
+ trllc = (struct trllc *)(skb->data+sizeof(struct trh_hdr)-TR_MAXRIFLEN+riflen);
+
+ skb_pull(skb,sizeof(struct trh_hdr)-TR_MAXRIFLEN+riflen);
+
+ if(*trh->daddr & 0x80)
+ {
+ if(!memcmp(trh->daddr,dev->broadcast,TR_ALEN))
+ skb->pkt_type=PACKET_BROADCAST;
+ else
+ skb->pkt_type=PACKET_MULTICAST;
+ }
+ else if ( (trh->daddr[0] & 0x01) && (trh->daddr[1] & 0x00) && (trh->daddr[2] & 0x5E))
+ {
+ skb->pkt_type=PACKET_MULTICAST;
+ }
+ else if(dev->flags & IFF_PROMISC)
+ {
+ if(memcmp(trh->daddr, dev->dev_addr, TR_ALEN))
+ skb->pkt_type=PACKET_OTHERHOST;
+ }
+
+ if ((skb->pkt_type != PACKET_BROADCAST) &&
+ (skb->pkt_type != PACKET_MULTICAST))
+ tr_add_rif_info(trh,dev) ;
+
+ /*
+ * Strip the SNAP header from ARP packets since we don't
+ * pass them through to the 802.2/SNAP layers.
+ */
+
+ if (trllc->dsap == EXTENDED_SAP &&
+ (trllc->ethertype == htons(ETH_P_IP) ||
+ trllc->ethertype == htons(ETH_P_IPV6) ||
+ trllc->ethertype == htons(ETH_P_ARP)))
+ {
+ skb_pull(skb, sizeof(struct trllc));
+ return trllc->ethertype;
+ }
+
+ return htons(ETH_P_TR_802_2);
+}
+
+/*
+ * We try to do source routing...
+ */
+
+void tr_source_route(struct sk_buff *skb,struct trh_hdr *trh,
+ struct net_device *dev)
+{
+ int slack;
+ unsigned int hash;
+ struct rif_cache *entry;
+ unsigned char *olddata;
+ unsigned long flags;
+ static const unsigned char mcast_func_addr[]
+ = {0xC0,0x00,0x00,0x04,0x00,0x00};
+
+ spin_lock_irqsave(&rif_lock, flags);
+
+ /*
+ * Broadcasts are single route as stated in RFC 1042
+ */
+ if( (!memcmp(&(trh->daddr[0]),&(dev->broadcast[0]),TR_ALEN)) ||
+ (!memcmp(&(trh->daddr[0]),&(mcast_func_addr[0]), TR_ALEN)) )
+ {
+ trh->rcf=htons((((sizeof(trh->rcf)) << 8) & TR_RCF_LEN_MASK)
+ | TR_RCF_FRAME2K | TR_RCF_LIMITED_BROADCAST);
+ trh->saddr[0]|=TR_RII;
+ }
+ else
+ {
+ hash = rif_hash(trh->daddr);
+ /*
+ * Walk the hash table and look for an entry
+ */
+ for(entry=rif_table[hash];entry && memcmp(&(entry->addr[0]),&(trh->daddr[0]),TR_ALEN);entry=entry->next);
+
+ /*
+ * If we found an entry we can route the frame.
+ */
+ if(entry)
+ {
+#if TR_SR_DEBUG
+printk("source routing for %pM\n", trh->daddr);
+#endif
+ if(!entry->local_ring && (ntohs(entry->rcf) & TR_RCF_LEN_MASK) >> 8)
+ {
+ trh->rcf=entry->rcf;
+ memcpy(&trh->rseg[0],&entry->rseg[0],8*sizeof(unsigned short));
+ trh->rcf^=htons(TR_RCF_DIR_BIT);
+ trh->rcf&=htons(0x1fff); /* Issam Chehab <ichehab@madge1.demon.co.uk> */
+
+ trh->saddr[0]|=TR_RII;
+#if TR_SR_DEBUG
+ printk("entry found with rcf %04x\n", entry->rcf);
+ }
+ else
+ {
+ printk("entry found but without rcf length, local=%02x\n", entry->local_ring);
+#endif
+ }
+ entry->last_used=jiffies;
+ }
+ else
+ {
+ /*
+ * Without the information we simply have to shout
+ * on the wire. The replies should rapidly clean this
+ * situation up.
+ */
+ trh->rcf=htons((((sizeof(trh->rcf)) << 8) & TR_RCF_LEN_MASK)
+ | TR_RCF_FRAME2K | TR_RCF_LIMITED_BROADCAST);
+ trh->saddr[0]|=TR_RII;
+#if TR_SR_DEBUG
+ printk("no entry in rif table found - broadcasting frame\n");
+#endif
+ }
+ }
+
+ /* Compress the RIF here so we don't have to do it in the driver(s) */
+ if (!(trh->saddr[0] & 0x80))
+ slack = 18;
+ else
+ slack = 18 - ((ntohs(trh->rcf) & TR_RCF_LEN_MASK)>>8);
+ olddata = skb->data;
+ spin_unlock_irqrestore(&rif_lock, flags);
+
+ skb_pull(skb, slack);
+ memmove(skb->data, olddata, sizeof(struct trh_hdr) - slack);
+}
+
+/*
+ * We have learned some new RIF information for our source
+ * routing.
+ */
+
+static void tr_add_rif_info(struct trh_hdr *trh, struct net_device *dev)
+{
+ unsigned int hash, rii_p = 0;
+ unsigned long flags;
+ struct rif_cache *entry;
+ unsigned char saddr0;
+
+ spin_lock_irqsave(&rif_lock, flags);
+ saddr0 = trh->saddr[0];
+
+ /*
+ * Firstly see if the entry exists
+ */
+
+ if(trh->saddr[0] & TR_RII)
+ {
+ trh->saddr[0]&=0x7f;
+ if (((ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8) > 2)
+ {
+ rii_p = 1;
+ }
+ }
+
+ hash = rif_hash(trh->saddr);
+ for(entry=rif_table[hash];entry && memcmp(&(entry->addr[0]),&(trh->saddr[0]),TR_ALEN);entry=entry->next);
+
+ if(entry==NULL)
+ {
+#if TR_SR_DEBUG
+ printk("adding rif_entry: addr:%pM rcf:%04X\n",
+ trh->saddr, ntohs(trh->rcf));
+#endif
+ /*
+ * Allocate our new entry. A failure to allocate loses
+ * use the information. This is harmless.
+ *
+ * FIXME: We ought to keep some kind of cache size
+ * limiting and adjust the timers to suit.
+ */
+ entry=kmalloc(sizeof(struct rif_cache),GFP_ATOMIC);
+
+ if(!entry)
+ {
+ printk(KERN_DEBUG "tr.c: Couldn't malloc rif cache entry !\n");
+ spin_unlock_irqrestore(&rif_lock, flags);
+ return;
+ }
+
+ memcpy(&(entry->addr[0]),&(trh->saddr[0]),TR_ALEN);
+ entry->iface = dev->ifindex;
+ entry->next=rif_table[hash];
+ entry->last_used=jiffies;
+ rif_table[hash]=entry;
+
+ if (rii_p)
+ {
+ entry->rcf = trh->rcf & htons((unsigned short)~TR_RCF_BROADCAST_MASK);
+ memcpy(&(entry->rseg[0]),&(trh->rseg[0]),8*sizeof(unsigned short));
+ entry->local_ring = 0;
+ }
+ else
+ {
+ entry->local_ring = 1;
+ }
+ }
+ else /* Y. Tahara added */
+ {
+ /*
+ * Update existing entries
+ */
+ if (!entry->local_ring)
+ if (entry->rcf != (trh->rcf & htons((unsigned short)~TR_RCF_BROADCAST_MASK)) &&
+ !(trh->rcf & htons(TR_RCF_BROADCAST_MASK)))
+ {
+#if TR_SR_DEBUG
+printk("updating rif_entry: addr:%pM rcf:%04X\n",
+ trh->saddr, ntohs(trh->rcf));
+#endif
+ entry->rcf = trh->rcf & htons((unsigned short)~TR_RCF_BROADCAST_MASK);
+ memcpy(&(entry->rseg[0]),&(trh->rseg[0]),8*sizeof(unsigned short));
+ }
+ entry->last_used=jiffies;
+ }
+ trh->saddr[0]=saddr0; /* put the routing indicator back for tcpdump */
+ spin_unlock_irqrestore(&rif_lock, flags);
+}
+
+/*
+ * Scan the cache with a timer and see what we need to throw out.
+ */
+
+static void rif_check_expire(unsigned long dummy)
+{
+ int i;
+ unsigned long flags, next_interval = jiffies + sysctl_tr_rif_timeout/2;
+
+ spin_lock_irqsave(&rif_lock, flags);
+
+ for(i =0; i < RIF_TABLE_SIZE; i++) {
+ struct rif_cache *entry, **pentry;
+
+ pentry = rif_table+i;
+ while((entry=*pentry) != NULL) {
+ unsigned long expires
+ = entry->last_used + sysctl_tr_rif_timeout;
+
+ if (time_before_eq(expires, jiffies)) {
+ *pentry = entry->next;
+ kfree(entry);
+ } else {
+ pentry = &entry->next;
+
+ if (time_before(expires, next_interval))
+ next_interval = expires;
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&rif_lock, flags);
+
+ mod_timer(&rif_timer, next_interval);
+
+}
+
+/*
+ * Generate the /proc/net information for the token ring RIF
+ * routing.
+ */
+
+#ifdef CONFIG_PROC_FS
+
+static struct rif_cache *rif_get_idx(loff_t pos)
+{
+ int i;
+ struct rif_cache *entry;
+ loff_t off = 0;
+
+ for(i = 0; i < RIF_TABLE_SIZE; i++)
+ for(entry = rif_table[i]; entry; entry = entry->next) {
+ if (off == pos)
+ return entry;
+ ++off;
+ }
+
+ return NULL;
+}
+
+static void *rif_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(&rif_lock)
+{
+ spin_lock_irq(&rif_lock);
+
+ return *pos ? rif_get_idx(*pos - 1) : SEQ_START_TOKEN;
+}
+
+static void *rif_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ int i;
+ struct rif_cache *ent = v;
+
+ ++*pos;
+
+ if (v == SEQ_START_TOKEN) {
+ i = -1;
+ goto scan;
+ }
+
+ if (ent->next)
+ return ent->next;
+
+ i = rif_hash(ent->addr);
+ scan:
+ while (++i < RIF_TABLE_SIZE) {
+ if ((ent = rif_table[i]) != NULL)
+ return ent;
+ }
+ return NULL;
+}
+
+static void rif_seq_stop(struct seq_file *seq, void *v)
+ __releases(&rif_lock)
+{
+ spin_unlock_irq(&rif_lock);
+}
+
+static int rif_seq_show(struct seq_file *seq, void *v)
+{
+ int j, rcf_len, segment, brdgnmb;
+ struct rif_cache *entry = v;
+
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq,
+ "if TR address TTL rcf routing segments\n");
+ else {
+ struct net_device *dev = dev_get_by_index(&init_net, entry->iface);
+ long ttl = (long) (entry->last_used + sysctl_tr_rif_timeout)
+ - (long) jiffies;
+
+ seq_printf(seq, "%s %pM %7li ",
+ dev?dev->name:"?",
+ entry->addr,
+ ttl/HZ);
+
+ if (entry->local_ring)
+ seq_puts(seq, "local\n");
+ else {
+
+ seq_printf(seq, "%04X", ntohs(entry->rcf));
+ rcf_len = ((ntohs(entry->rcf) & TR_RCF_LEN_MASK)>>8)-2;
+ if (rcf_len)
+ rcf_len >>= 1;
+ for(j = 1; j < rcf_len; j++) {
+ if(j==1) {
+ segment=ntohs(entry->rseg[j-1])>>4;
+ seq_printf(seq," %03X",segment);
+ }
+
+ segment=ntohs(entry->rseg[j])>>4;
+ brdgnmb=ntohs(entry->rseg[j-1])&0x00f;
+ seq_printf(seq,"-%01X-%03X",brdgnmb,segment);
+ }
+ seq_putc(seq, '\n');
+ }
+
+ if (dev)
+ dev_put(dev);
+ }
+ return 0;
+}
+
+
+static const struct seq_operations rif_seq_ops = {
+ .start = rif_seq_start,
+ .next = rif_seq_next,
+ .stop = rif_seq_stop,
+ .show = rif_seq_show,
+};
+
+static int rif_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &rif_seq_ops);
+}
+
+static const struct file_operations rif_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = rif_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+#endif
+
+static const struct header_ops tr_header_ops = {
+ .create = tr_header,
+ .rebuild= tr_rebuild_header,
+};
+
+static void tr_setup(struct net_device *dev)
+{
+ /*
+ * Configure and register
+ */
+
+ dev->header_ops = &tr_header_ops;
+
+ dev->type = ARPHRD_IEEE802_TR;
+ dev->hard_header_len = TR_HLEN;
+ dev->mtu = 2000;
+ dev->addr_len = TR_ALEN;
+ dev->tx_queue_len = 100; /* Long queues on tr */
+
+ memset(dev->broadcast,0xFF, TR_ALEN);
+
+ /* New-style flags. */
+ dev->flags = IFF_BROADCAST | IFF_MULTICAST ;
+}
+
+/**
+ * alloc_trdev - Register token ring device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ * for this token ring device
+ *
+ * Fill in the fields of the device structure with token ring-generic values.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+struct net_device *alloc_trdev(int sizeof_priv)
+{
+ return alloc_netdev(sizeof_priv, "tr%d", tr_setup);
+}
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table tr_table[] = {
+ {
+ .procname = "rif_timeout",
+ .data = &sysctl_tr_rif_timeout,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ { },
+};
+
+static __initdata struct ctl_path tr_path[] = {
+ { .procname = "net", },
+ { .procname = "token-ring", },
+ { }
+};
+#endif
+
+/*
+ * Called during bootup. We don't actually have to initialise
+ * too much for this.
+ */
+
+static int __init rif_init(void)
+{
+ rif_timer.expires = jiffies + sysctl_tr_rif_timeout;
+ setup_timer(&rif_timer, rif_check_expire, 0);
+ add_timer(&rif_timer);
+#ifdef CONFIG_SYSCTL
+ register_sysctl_paths(tr_path, tr_table);
+#endif
+ proc_net_fops_create(&init_net, "tr_rif", S_IRUGO, &rif_seq_fops);
+ return 0;
+}
+
+module_init(rif_init);
+
+EXPORT_SYMBOL(tr_type_trans);
+EXPORT_SYMBOL(alloc_trdev);
+
+MODULE_LICENSE("GPL");