[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/net/sched/sch_atm.c b/src/kernel/linux/v4.14/net/sched/sch_atm.c
new file mode 100644
index 0000000..9198c99
--- /dev/null
+++ b/src/kernel/linux/v4.14/net/sched/sch_atm.c
@@ -0,0 +1,698 @@
+/* net/sched/sch_atm.c - ATM VC selection "queueing discipline" */
+
+/* Written 1998-2000 by Werner Almesberger, EPFL ICA */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/atmdev.h>
+#include <linux/atmclip.h>
+#include <linux/rtnetlink.h>
+#include <linux/file.h> /* for fput */
+#include <net/netlink.h>
+#include <net/pkt_sched.h>
+#include <net/pkt_cls.h>
+
+/*
+ * The ATM queuing discipline provides a framework for invoking classifiers
+ * (aka "filters"), which in turn select classes of this queuing discipline.
+ * Each class maps the flow(s) it is handling to a given VC. Multiple classes
+ * may share the same VC.
+ *
+ * When creating a class, VCs are specified by passing the number of the open
+ * socket descriptor by which the calling process references the VC. The kernel
+ * keeps the VC open at least until all classes using it are removed.
+ *
+ * In this file, most functions are named atm_tc_* to avoid confusion with all
+ * the atm_* in net/atm. This naming convention differs from what's used in the
+ * rest of net/sched.
+ *
+ * Known bugs:
+ * - sometimes messes up the IP stack
+ * - any manipulations besides the few operations described in the README, are
+ * untested and likely to crash the system
+ * - should lock the flow while there is data in the queue (?)
+ */
+
+#define VCC2FLOW(vcc) ((struct atm_flow_data *) ((vcc)->user_back))
+
+struct atm_flow_data {
+ struct Qdisc_class_common common;
+ struct Qdisc *q; /* FIFO, TBF, etc. */
+ struct tcf_proto __rcu *filter_list;
+ struct tcf_block *block;
+ struct atm_vcc *vcc; /* VCC; NULL if VCC is closed */
+ void (*old_pop)(struct atm_vcc *vcc,
+ struct sk_buff *skb); /* chaining */
+ struct atm_qdisc_data *parent; /* parent qdisc */
+ struct socket *sock; /* for closing */
+ int ref; /* reference count */
+ struct gnet_stats_basic_packed bstats;
+ struct gnet_stats_queue qstats;
+ struct list_head list;
+ struct atm_flow_data *excess; /* flow for excess traffic;
+ NULL to set CLP instead */
+ int hdr_len;
+ unsigned char hdr[0]; /* header data; MUST BE LAST */
+};
+
+struct atm_qdisc_data {
+ struct atm_flow_data link; /* unclassified skbs go here */
+ struct list_head flows; /* NB: "link" is also on this
+ list */
+ struct tasklet_struct task; /* dequeue tasklet */
+};
+
+/* ------------------------- Class/flow operations ------------------------- */
+
+static inline struct atm_flow_data *lookup_flow(struct Qdisc *sch, u32 classid)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+
+ list_for_each_entry(flow, &p->flows, list) {
+ if (flow->common.classid == classid)
+ return flow;
+ }
+ return NULL;
+}
+
+static int atm_tc_graft(struct Qdisc *sch, unsigned long arg,
+ struct Qdisc *new, struct Qdisc **old)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow = (struct atm_flow_data *)arg;
+
+ pr_debug("atm_tc_graft(sch %p,[qdisc %p],flow %p,new %p,old %p)\n",
+ sch, p, flow, new, old);
+ if (list_empty(&flow->list))
+ return -EINVAL;
+ if (!new)
+ new = &noop_qdisc;
+ *old = flow->q;
+ flow->q = new;
+ if (*old)
+ qdisc_reset(*old);
+ return 0;
+}
+
+static struct Qdisc *atm_tc_leaf(struct Qdisc *sch, unsigned long cl)
+{
+ struct atm_flow_data *flow = (struct atm_flow_data *)cl;
+
+ pr_debug("atm_tc_leaf(sch %p,flow %p)\n", sch, flow);
+ return flow ? flow->q : NULL;
+}
+
+static unsigned long atm_tc_find(struct Qdisc *sch, u32 classid)
+{
+ struct atm_qdisc_data *p __maybe_unused = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+
+ pr_debug("%s(sch %p,[qdisc %p],classid %x)\n", __func__, sch, p, classid);
+ flow = lookup_flow(sch, classid);
+ pr_debug("%s: flow %p\n", __func__, flow);
+ return (unsigned long)flow;
+}
+
+static unsigned long atm_tc_bind_filter(struct Qdisc *sch,
+ unsigned long parent, u32 classid)
+{
+ struct atm_qdisc_data *p __maybe_unused = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+
+ pr_debug("%s(sch %p,[qdisc %p],classid %x)\n", __func__, sch, p, classid);
+ flow = lookup_flow(sch, classid);
+ if (flow)
+ flow->ref++;
+ pr_debug("%s: flow %p\n", __func__, flow);
+ return (unsigned long)flow;
+}
+
+/*
+ * atm_tc_put handles all destructions, including the ones that are explicitly
+ * requested (atm_tc_destroy, etc.). The assumption here is that we never drop
+ * anything that still seems to be in use.
+ */
+static void atm_tc_put(struct Qdisc *sch, unsigned long cl)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow = (struct atm_flow_data *)cl;
+
+ pr_debug("atm_tc_put(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
+ if (--flow->ref)
+ return;
+ pr_debug("atm_tc_put: destroying\n");
+ list_del_init(&flow->list);
+ pr_debug("atm_tc_put: qdisc %p\n", flow->q);
+ qdisc_destroy(flow->q);
+ tcf_block_put(flow->block);
+ if (flow->sock) {
+ pr_debug("atm_tc_put: f_count %ld\n",
+ file_count(flow->sock->file));
+ flow->vcc->pop = flow->old_pop;
+ sockfd_put(flow->sock);
+ }
+ if (flow->excess)
+ atm_tc_put(sch, (unsigned long)flow->excess);
+ if (flow != &p->link)
+ kfree(flow);
+ /*
+ * If flow == &p->link, the qdisc no longer works at this point and
+ * needs to be removed. (By the caller of atm_tc_put.)
+ */
+}
+
+static void sch_atm_pop(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct atm_qdisc_data *p = VCC2FLOW(vcc)->parent;
+
+ pr_debug("sch_atm_pop(vcc %p,skb %p,[qdisc %p])\n", vcc, skb, p);
+ VCC2FLOW(vcc)->old_pop(vcc, skb);
+ tasklet_schedule(&p->task);
+}
+
+static const u8 llc_oui_ip[] = {
+ 0xaa, /* DSAP: non-ISO */
+ 0xaa, /* SSAP: non-ISO */
+ 0x03, /* Ctrl: Unnumbered Information Command PDU */
+ 0x00, /* OUI: EtherType */
+ 0x00, 0x00,
+ 0x08, 0x00
+}; /* Ethertype IP (0800) */
+
+static const struct nla_policy atm_policy[TCA_ATM_MAX + 1] = {
+ [TCA_ATM_FD] = { .type = NLA_U32 },
+ [TCA_ATM_EXCESS] = { .type = NLA_U32 },
+};
+
+static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
+ struct nlattr **tca, unsigned long *arg)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow = (struct atm_flow_data *)*arg;
+ struct atm_flow_data *excess = NULL;
+ struct nlattr *opt = tca[TCA_OPTIONS];
+ struct nlattr *tb[TCA_ATM_MAX + 1];
+ struct socket *sock;
+ int fd, error, hdr_len;
+ void *hdr;
+
+ pr_debug("atm_tc_change(sch %p,[qdisc %p],classid %x,parent %x,"
+ "flow %p,opt %p)\n", sch, p, classid, parent, flow, opt);
+ /*
+ * The concept of parents doesn't apply for this qdisc.
+ */
+ if (parent && parent != TC_H_ROOT && parent != sch->handle)
+ return -EINVAL;
+ /*
+ * ATM classes cannot be changed. In order to change properties of the
+ * ATM connection, that socket needs to be modified directly (via the
+ * native ATM API. In order to send a flow to a different VC, the old
+ * class needs to be removed and a new one added. (This may be changed
+ * later.)
+ */
+ if (flow)
+ return -EBUSY;
+ if (opt == NULL)
+ return -EINVAL;
+
+ error = nla_parse_nested(tb, TCA_ATM_MAX, opt, atm_policy, NULL);
+ if (error < 0)
+ return error;
+
+ if (!tb[TCA_ATM_FD])
+ return -EINVAL;
+ fd = nla_get_u32(tb[TCA_ATM_FD]);
+ pr_debug("atm_tc_change: fd %d\n", fd);
+ if (tb[TCA_ATM_HDR]) {
+ hdr_len = nla_len(tb[TCA_ATM_HDR]);
+ hdr = nla_data(tb[TCA_ATM_HDR]);
+ } else {
+ hdr_len = RFC1483LLC_LEN;
+ hdr = NULL; /* default LLC/SNAP for IP */
+ }
+ if (!tb[TCA_ATM_EXCESS])
+ excess = NULL;
+ else {
+ excess = (struct atm_flow_data *)
+ atm_tc_find(sch, nla_get_u32(tb[TCA_ATM_EXCESS]));
+ if (!excess)
+ return -ENOENT;
+ }
+ pr_debug("atm_tc_change: type %d, payload %d, hdr_len %d\n",
+ opt->nla_type, nla_len(opt), hdr_len);
+ sock = sockfd_lookup(fd, &error);
+ if (!sock)
+ return error; /* f_count++ */
+ pr_debug("atm_tc_change: f_count %ld\n", file_count(sock->file));
+ if (sock->ops->family != PF_ATMSVC && sock->ops->family != PF_ATMPVC) {
+ error = -EPROTOTYPE;
+ goto err_out;
+ }
+ /* @@@ should check if the socket is really operational or we'll crash
+ on vcc->send */
+ if (classid) {
+ if (TC_H_MAJ(classid ^ sch->handle)) {
+ pr_debug("atm_tc_change: classid mismatch\n");
+ error = -EINVAL;
+ goto err_out;
+ }
+ } else {
+ int i;
+ unsigned long cl;
+
+ for (i = 1; i < 0x8000; i++) {
+ classid = TC_H_MAKE(sch->handle, 0x8000 | i);
+ cl = atm_tc_find(sch, classid);
+ if (!cl)
+ break;
+ }
+ }
+ pr_debug("atm_tc_change: new id %x\n", classid);
+ flow = kzalloc(sizeof(struct atm_flow_data) + hdr_len, GFP_KERNEL);
+ pr_debug("atm_tc_change: flow %p\n", flow);
+ if (!flow) {
+ error = -ENOBUFS;
+ goto err_out;
+ }
+
+ error = tcf_block_get(&flow->block, &flow->filter_list);
+ if (error) {
+ kfree(flow);
+ goto err_out;
+ }
+
+ flow->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, classid);
+ if (!flow->q)
+ flow->q = &noop_qdisc;
+ pr_debug("atm_tc_change: qdisc %p\n", flow->q);
+ flow->sock = sock;
+ flow->vcc = ATM_SD(sock); /* speedup */
+ flow->vcc->user_back = flow;
+ pr_debug("atm_tc_change: vcc %p\n", flow->vcc);
+ flow->old_pop = flow->vcc->pop;
+ flow->parent = p;
+ flow->vcc->pop = sch_atm_pop;
+ flow->common.classid = classid;
+ flow->ref = 1;
+ flow->excess = excess;
+ list_add(&flow->list, &p->link.list);
+ flow->hdr_len = hdr_len;
+ if (hdr)
+ memcpy(flow->hdr, hdr, hdr_len);
+ else
+ memcpy(flow->hdr, llc_oui_ip, sizeof(llc_oui_ip));
+ *arg = (unsigned long)flow;
+ return 0;
+err_out:
+ sockfd_put(sock);
+ return error;
+}
+
+static int atm_tc_delete(struct Qdisc *sch, unsigned long arg)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow = (struct atm_flow_data *)arg;
+
+ pr_debug("atm_tc_delete(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
+ if (list_empty(&flow->list))
+ return -EINVAL;
+ if (rcu_access_pointer(flow->filter_list) || flow == &p->link)
+ return -EBUSY;
+ /*
+ * Reference count must be 2: one for "keepalive" (set at class
+ * creation), and one for the reference held when calling delete.
+ */
+ if (flow->ref < 2) {
+ pr_err("atm_tc_delete: flow->ref == %d\n", flow->ref);
+ return -EINVAL;
+ }
+ if (flow->ref > 2)
+ return -EBUSY; /* catch references via excess, etc. */
+ atm_tc_put(sch, arg);
+ return 0;
+}
+
+static void atm_tc_walk(struct Qdisc *sch, struct qdisc_walker *walker)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+
+ pr_debug("atm_tc_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
+ if (walker->stop)
+ return;
+ list_for_each_entry(flow, &p->flows, list) {
+ if (walker->count >= walker->skip &&
+ walker->fn(sch, (unsigned long)flow, walker) < 0) {
+ walker->stop = 1;
+ break;
+ }
+ walker->count++;
+ }
+}
+
+static struct tcf_block *atm_tc_tcf_block(struct Qdisc *sch, unsigned long cl)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow = (struct atm_flow_data *)cl;
+
+ pr_debug("atm_tc_find_tcf(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
+ return flow ? flow->block : p->link.block;
+}
+
+/* --------------------------- Qdisc operations ---------------------------- */
+
+static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch,
+ struct sk_buff **to_free)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+ struct tcf_result res;
+ int result;
+ int ret = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
+
+ pr_debug("atm_tc_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
+ result = TC_ACT_OK; /* be nice to gcc */
+ flow = NULL;
+ if (TC_H_MAJ(skb->priority) != sch->handle ||
+ !(flow = (struct atm_flow_data *)atm_tc_find(sch, skb->priority))) {
+ struct tcf_proto *fl;
+
+ list_for_each_entry(flow, &p->flows, list) {
+ fl = rcu_dereference_bh(flow->filter_list);
+ if (fl) {
+ result = tcf_classify(skb, fl, &res, true);
+ if (result < 0)
+ continue;
+ flow = (struct atm_flow_data *)res.class;
+ if (!flow)
+ flow = lookup_flow(sch, res.classid);
+ goto done;
+ }
+ }
+ flow = NULL;
+done:
+ ;
+ }
+ if (!flow) {
+ flow = &p->link;
+ } else {
+ if (flow->vcc)
+ ATM_SKB(skb)->atm_options = flow->vcc->atm_options;
+ /*@@@ looks good ... but it's not supposed to work :-) */
+#ifdef CONFIG_NET_CLS_ACT
+ switch (result) {
+ case TC_ACT_QUEUED:
+ case TC_ACT_STOLEN:
+ case TC_ACT_TRAP:
+ __qdisc_drop(skb, to_free);
+ return NET_XMIT_SUCCESS | __NET_XMIT_STOLEN;
+ case TC_ACT_SHOT:
+ __qdisc_drop(skb, to_free);
+ goto drop;
+ case TC_ACT_RECLASSIFY:
+ if (flow->excess)
+ flow = flow->excess;
+ else
+ ATM_SKB(skb)->atm_options |= ATM_ATMOPT_CLP;
+ break;
+ }
+#endif
+ }
+
+ ret = qdisc_enqueue(skb, flow->q, to_free);
+ if (ret != NET_XMIT_SUCCESS) {
+drop: __maybe_unused
+ if (net_xmit_drop_count(ret)) {
+ qdisc_qstats_drop(sch);
+ if (flow)
+ flow->qstats.drops++;
+ }
+ return ret;
+ }
+ /*
+ * Okay, this may seem weird. We pretend we've dropped the packet if
+ * it goes via ATM. The reason for this is that the outer qdisc
+ * expects to be able to q->dequeue the packet later on if we return
+ * success at this place. Also, sch->q.qdisc needs to reflect whether
+ * there is a packet egligible for dequeuing or not. Note that the
+ * statistics of the outer qdisc are necessarily wrong because of all
+ * this. There's currently no correct solution for this.
+ */
+ if (flow == &p->link) {
+ sch->q.qlen++;
+ return NET_XMIT_SUCCESS;
+ }
+ tasklet_schedule(&p->task);
+ return NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
+}
+
+/*
+ * Dequeue packets and send them over ATM. Note that we quite deliberately
+ * avoid checking net_device's flow control here, simply because sch_atm
+ * uses its own channels, which have nothing to do with any CLIP/LANE/or
+ * non-ATM interfaces.
+ */
+
+static void sch_atm_dequeue(unsigned long data)
+{
+ struct Qdisc *sch = (struct Qdisc *)data;
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+ struct sk_buff *skb;
+
+ pr_debug("sch_atm_dequeue(sch %p,[qdisc %p])\n", sch, p);
+ list_for_each_entry(flow, &p->flows, list) {
+ if (flow == &p->link)
+ continue;
+ /*
+ * If traffic is properly shaped, this won't generate nasty
+ * little bursts. Otherwise, it may ... (but that's okay)
+ */
+ while ((skb = flow->q->ops->peek(flow->q))) {
+ if (!atm_may_send(flow->vcc, skb->truesize))
+ break;
+
+ skb = qdisc_dequeue_peeked(flow->q);
+ if (unlikely(!skb))
+ break;
+
+ qdisc_bstats_update(sch, skb);
+ bstats_update(&flow->bstats, skb);
+ pr_debug("atm_tc_dequeue: sending on class %p\n", flow);
+ /* remove any LL header somebody else has attached */
+ skb_pull(skb, skb_network_offset(skb));
+ if (skb_headroom(skb) < flow->hdr_len) {
+ struct sk_buff *new;
+
+ new = skb_realloc_headroom(skb, flow->hdr_len);
+ dev_kfree_skb(skb);
+ if (!new)
+ continue;
+ skb = new;
+ }
+ pr_debug("sch_atm_dequeue: ip %p, data %p\n",
+ skb_network_header(skb), skb->data);
+ ATM_SKB(skb)->vcc = flow->vcc;
+ memcpy(skb_push(skb, flow->hdr_len), flow->hdr,
+ flow->hdr_len);
+ refcount_add(skb->truesize,
+ &sk_atm(flow->vcc)->sk_wmem_alloc);
+ /* atm.atm_options are already set by atm_tc_enqueue */
+ flow->vcc->send(flow->vcc, skb);
+ }
+ }
+}
+
+static struct sk_buff *atm_tc_dequeue(struct Qdisc *sch)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct sk_buff *skb;
+
+ pr_debug("atm_tc_dequeue(sch %p,[qdisc %p])\n", sch, p);
+ tasklet_schedule(&p->task);
+ skb = qdisc_dequeue_peeked(p->link.q);
+ if (skb)
+ sch->q.qlen--;
+ return skb;
+}
+
+static struct sk_buff *atm_tc_peek(struct Qdisc *sch)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+
+ pr_debug("atm_tc_peek(sch %p,[qdisc %p])\n", sch, p);
+
+ return p->link.q->ops->peek(p->link.q);
+}
+
+static int atm_tc_init(struct Qdisc *sch, struct nlattr *opt)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ int err;
+
+ pr_debug("atm_tc_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
+ INIT_LIST_HEAD(&p->flows);
+ INIT_LIST_HEAD(&p->link.list);
+ list_add(&p->link.list, &p->flows);
+ p->link.q = qdisc_create_dflt(sch->dev_queue,
+ &pfifo_qdisc_ops, sch->handle);
+ if (!p->link.q)
+ p->link.q = &noop_qdisc;
+ pr_debug("atm_tc_init: link (%p) qdisc %p\n", &p->link, p->link.q);
+ p->link.vcc = NULL;
+ p->link.sock = NULL;
+ p->link.common.classid = sch->handle;
+ p->link.ref = 1;
+
+ err = tcf_block_get(&p->link.block, &p->link.filter_list);
+ if (err)
+ return err;
+
+ tasklet_init(&p->task, sch_atm_dequeue, (unsigned long)sch);
+ return 0;
+}
+
+static void atm_tc_reset(struct Qdisc *sch)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow;
+
+ pr_debug("atm_tc_reset(sch %p,[qdisc %p])\n", sch, p);
+ list_for_each_entry(flow, &p->flows, list)
+ qdisc_reset(flow->q);
+ sch->q.qlen = 0;
+}
+
+static void atm_tc_destroy(struct Qdisc *sch)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow, *tmp;
+
+ pr_debug("atm_tc_destroy(sch %p,[qdisc %p])\n", sch, p);
+ list_for_each_entry(flow, &p->flows, list) {
+ tcf_block_put(flow->block);
+ flow->block = NULL;
+ }
+
+ list_for_each_entry_safe(flow, tmp, &p->flows, list) {
+ if (flow->ref > 1)
+ pr_err("atm_destroy: %p->ref = %d\n", flow, flow->ref);
+ atm_tc_put(sch, (unsigned long)flow);
+ }
+ tasklet_kill(&p->task);
+}
+
+static int atm_tc_dump_class(struct Qdisc *sch, unsigned long cl,
+ struct sk_buff *skb, struct tcmsg *tcm)
+{
+ struct atm_qdisc_data *p = qdisc_priv(sch);
+ struct atm_flow_data *flow = (struct atm_flow_data *)cl;
+ struct nlattr *nest;
+
+ pr_debug("atm_tc_dump_class(sch %p,[qdisc %p],flow %p,skb %p,tcm %p)\n",
+ sch, p, flow, skb, tcm);
+ if (list_empty(&flow->list))
+ return -EINVAL;
+ tcm->tcm_handle = flow->common.classid;
+ tcm->tcm_info = flow->q->handle;
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
+
+ if (nla_put(skb, TCA_ATM_HDR, flow->hdr_len, flow->hdr))
+ goto nla_put_failure;
+ if (flow->vcc) {
+ struct sockaddr_atmpvc pvc;
+ int state;
+
+ memset(&pvc, 0, sizeof(pvc));
+ pvc.sap_family = AF_ATMPVC;
+ pvc.sap_addr.itf = flow->vcc->dev ? flow->vcc->dev->number : -1;
+ pvc.sap_addr.vpi = flow->vcc->vpi;
+ pvc.sap_addr.vci = flow->vcc->vci;
+ if (nla_put(skb, TCA_ATM_ADDR, sizeof(pvc), &pvc))
+ goto nla_put_failure;
+ state = ATM_VF2VS(flow->vcc->flags);
+ if (nla_put_u32(skb, TCA_ATM_STATE, state))
+ goto nla_put_failure;
+ }
+ if (flow->excess) {
+ if (nla_put_u32(skb, TCA_ATM_EXCESS, flow->common.classid))
+ goto nla_put_failure;
+ } else {
+ if (nla_put_u32(skb, TCA_ATM_EXCESS, 0))
+ goto nla_put_failure;
+ }
+ return nla_nest_end(skb, nest);
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -1;
+}
+static int
+atm_tc_dump_class_stats(struct Qdisc *sch, unsigned long arg,
+ struct gnet_dump *d)
+{
+ struct atm_flow_data *flow = (struct atm_flow_data *)arg;
+
+ if (gnet_stats_copy_basic(qdisc_root_sleeping_running(sch),
+ d, NULL, &flow->bstats) < 0 ||
+ gnet_stats_copy_queue(d, NULL, &flow->qstats, flow->q->q.qlen) < 0)
+ return -1;
+
+ return 0;
+}
+
+static int atm_tc_dump(struct Qdisc *sch, struct sk_buff *skb)
+{
+ return 0;
+}
+
+static const struct Qdisc_class_ops atm_class_ops = {
+ .graft = atm_tc_graft,
+ .leaf = atm_tc_leaf,
+ .find = atm_tc_find,
+ .change = atm_tc_change,
+ .delete = atm_tc_delete,
+ .walk = atm_tc_walk,
+ .tcf_block = atm_tc_tcf_block,
+ .bind_tcf = atm_tc_bind_filter,
+ .unbind_tcf = atm_tc_put,
+ .dump = atm_tc_dump_class,
+ .dump_stats = atm_tc_dump_class_stats,
+};
+
+static struct Qdisc_ops atm_qdisc_ops __read_mostly = {
+ .cl_ops = &atm_class_ops,
+ .id = "atm",
+ .priv_size = sizeof(struct atm_qdisc_data),
+ .enqueue = atm_tc_enqueue,
+ .dequeue = atm_tc_dequeue,
+ .peek = atm_tc_peek,
+ .init = atm_tc_init,
+ .reset = atm_tc_reset,
+ .destroy = atm_tc_destroy,
+ .dump = atm_tc_dump,
+ .owner = THIS_MODULE,
+};
+
+static int __init atm_init(void)
+{
+ return register_qdisc(&atm_qdisc_ops);
+}
+
+static void __exit atm_exit(void)
+{
+ unregister_qdisc(&atm_qdisc_ops);
+}
+
+module_init(atm_init)
+module_exit(atm_exit)
+MODULE_LICENSE("GPL");