[NET_SCHED]: sch_atm: Lindent
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
David S. Miller
parent
f13ec93fba
commit
b0188d4dbe
1 changed files with 231 additions and 235 deletions
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@ -2,7 +2,6 @@
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/* Written 1998-2000 by Werner Almesberger, EPFL ICA */
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/string.h>
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@ -15,7 +14,6 @@
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#include <net/netlink.h>
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#include <net/pkt_sched.h>
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extern struct socket *sockfd_lookup(int fd, int *err); /* @@@ fix this */
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#if 0 /* control */
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@ -30,7 +28,6 @@ extern struct socket *sockfd_lookup(int fd, int *err); /* @@@ fix this */
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#define D2PRINTK(format,args...)
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#endif
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/*
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* The ATM queuing discipline provides a framework for invoking classifiers
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* (aka "filters"), which in turn select classes of this queuing discipline.
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@ -52,16 +49,15 @@ extern struct socket *sockfd_lookup(int fd, int *err); /* @@@ fix this */
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* - should lock the flow while there is data in the queue (?)
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*/
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#define PRIV(sch) qdisc_priv(sch)
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#define VCC2FLOW(vcc) ((struct atm_flow_data *) ((vcc)->user_back))
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struct atm_flow_data {
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struct Qdisc *q; /* FIFO, TBF, etc. */
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struct tcf_proto *filter_list;
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struct atm_vcc *vcc; /* VCC; NULL if VCC is closed */
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void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* chaining */
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void (*old_pop)(struct atm_vcc *vcc,
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struct sk_buff * skb); /* chaining */
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struct atm_qdisc_data *parent; /* parent qdisc */
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struct socket *sock; /* for closing */
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u32 classid; /* x:y type ID */
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@ -82,76 +78,74 @@ struct atm_qdisc_data {
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struct tasklet_struct task; /* requeue tasklet */
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};
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/* ------------------------- Class/flow operations ------------------------- */
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static int find_flow(struct atm_qdisc_data *qdisc,struct atm_flow_data *flow)
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static int find_flow(struct atm_qdisc_data *qdisc, struct atm_flow_data *flow)
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{
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struct atm_flow_data *walk;
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DPRINTK("find_flow(qdisc %p,flow %p)\n",qdisc,flow);
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DPRINTK("find_flow(qdisc %p,flow %p)\n", qdisc, flow);
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for (walk = qdisc->flows; walk; walk = walk->next)
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if (walk == flow) return 1;
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if (walk == flow)
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return 1;
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DPRINTK("find_flow: not found\n");
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return 0;
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}
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static __inline__ struct atm_flow_data *lookup_flow(struct Qdisc *sch,
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u32 classid)
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static inline struct atm_flow_data *lookup_flow(struct Qdisc *sch, u32 classid)
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{
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struct atm_qdisc_data *p = PRIV(sch);
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struct atm_flow_data *flow;
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for (flow = p->flows; flow; flow = flow->next)
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if (flow->classid == classid) break;
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if (flow->classid == classid)
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break;
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return flow;
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}
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static int atm_tc_graft(struct Qdisc *sch,unsigned long arg,
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struct Qdisc *new,struct Qdisc **old)
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static int atm_tc_graft(struct Qdisc *sch, unsigned long arg,
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struct Qdisc *new, struct Qdisc **old)
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{
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struct atm_qdisc_data *p = PRIV(sch);
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struct atm_flow_data *flow = (struct atm_flow_data *) arg;
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struct atm_flow_data *flow = (struct atm_flow_data *)arg;
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DPRINTK("atm_tc_graft(sch %p,[qdisc %p],flow %p,new %p,old %p)\n",sch,
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p,flow,new,old);
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if (!find_flow(p,flow)) return -EINVAL;
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if (!new) new = &noop_qdisc;
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*old = xchg(&flow->q,new);
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if (*old) qdisc_reset(*old);
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DPRINTK("atm_tc_graft(sch %p,[qdisc %p],flow %p,new %p,old %p)\n",
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sch, p, flow, new, old);
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if (!find_flow(p, flow))
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return -EINVAL;
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if (!new)
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new = &noop_qdisc;
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*old = xchg(&flow->q, new);
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if (*old)
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qdisc_reset(*old);
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return 0;
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}
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static struct Qdisc *atm_tc_leaf(struct Qdisc *sch,unsigned long cl)
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static struct Qdisc *atm_tc_leaf(struct Qdisc *sch, unsigned long cl)
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{
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struct atm_flow_data *flow = (struct atm_flow_data *) cl;
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struct atm_flow_data *flow = (struct atm_flow_data *)cl;
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DPRINTK("atm_tc_leaf(sch %p,flow %p)\n",sch,flow);
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DPRINTK("atm_tc_leaf(sch %p,flow %p)\n", sch, flow);
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return flow ? flow->q : NULL;
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}
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static unsigned long atm_tc_get(struct Qdisc *sch,u32 classid)
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static unsigned long atm_tc_get(struct Qdisc *sch, u32 classid)
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{
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struct atm_qdisc_data *p __attribute__((unused)) = PRIV(sch);
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struct atm_qdisc_data *p __maybe_unused = PRIV(sch);
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struct atm_flow_data *flow;
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DPRINTK("atm_tc_get(sch %p,[qdisc %p],classid %x)\n",sch,p,classid);
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flow = lookup_flow(sch,classid);
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if (flow) flow->ref++;
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DPRINTK("atm_tc_get: flow %p\n",flow);
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return (unsigned long) flow;
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DPRINTK("atm_tc_get(sch %p,[qdisc %p],classid %x)\n", sch, p, classid);
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flow = lookup_flow(sch, classid);
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if (flow)
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flow->ref++;
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DPRINTK("atm_tc_get: flow %p\n", flow);
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return (unsigned long)flow;
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}
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static unsigned long atm_tc_bind_filter(struct Qdisc *sch,
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unsigned long parent, u32 classid)
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{
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return atm_tc_get(sch,classid);
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return atm_tc_get(sch, classid);
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}
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/*
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@ -159,24 +153,25 @@ static unsigned long atm_tc_bind_filter(struct Qdisc *sch,
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* requested (atm_tc_destroy, etc.). The assumption here is that we never drop
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* anything that still seems to be in use.
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*/
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static void atm_tc_put(struct Qdisc *sch, unsigned long cl)
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{
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struct atm_qdisc_data *p = PRIV(sch);
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struct atm_flow_data *flow = (struct atm_flow_data *) cl;
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struct atm_flow_data *flow = (struct atm_flow_data *)cl;
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struct atm_flow_data **prev;
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DPRINTK("atm_tc_put(sch %p,[qdisc %p],flow %p)\n",sch,p,flow);
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if (--flow->ref) return;
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DPRINTK("atm_tc_put(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
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if (--flow->ref)
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return;
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DPRINTK("atm_tc_put: destroying\n");
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for (prev = &p->flows; *prev; prev = &(*prev)->next)
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if (*prev == flow) break;
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if (*prev == flow)
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break;
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if (!*prev) {
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printk(KERN_CRIT "atm_tc_put: class %p not found\n",flow);
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printk(KERN_CRIT "atm_tc_put: class %p not found\n", flow);
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return;
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}
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*prev = flow->next;
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DPRINTK("atm_tc_put: qdisc %p\n",flow->q);
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DPRINTK("atm_tc_put: qdisc %p\n", flow->q);
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qdisc_destroy(flow->q);
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tcf_destroy_chain(flow->filter_list);
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if (flow->sock) {
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@ -185,21 +180,22 @@ static void atm_tc_put(struct Qdisc *sch, unsigned long cl)
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flow->vcc->pop = flow->old_pop;
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sockfd_put(flow->sock);
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}
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if (flow->excess) atm_tc_put(sch,(unsigned long) flow->excess);
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if (flow != &p->link) kfree(flow);
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if (flow->excess)
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atm_tc_put(sch, (unsigned long)flow->excess);
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if (flow != &p->link)
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kfree(flow);
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/*
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* If flow == &p->link, the qdisc no longer works at this point and
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* needs to be removed. (By the caller of atm_tc_put.)
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*/
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}
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static void sch_atm_pop(struct atm_vcc *vcc,struct sk_buff *skb)
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static void sch_atm_pop(struct atm_vcc *vcc, struct sk_buff *skb)
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{
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struct atm_qdisc_data *p = VCC2FLOW(vcc)->parent;
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D2PRINTK("sch_atm_pop(vcc %p,skb %p,[qdisc %p])\n",vcc,skb,p);
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VCC2FLOW(vcc)->old_pop(vcc,skb);
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D2PRINTK("sch_atm_pop(vcc %p,skb %p,[qdisc %p])\n", vcc, skb, p);
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VCC2FLOW(vcc)->old_pop(vcc, skb);
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tasklet_schedule(&p->task);
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}
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@ -209,22 +205,23 @@ static const u8 llc_oui_ip[] = {
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0x03, /* Ctrl: Unnumbered Information Command PDU */
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0x00, /* OUI: EtherType */
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0x00, 0x00,
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0x08, 0x00 }; /* Ethertype IP (0800) */
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0x08, 0x00
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}; /* Ethertype IP (0800) */
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static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
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struct rtattr **tca, unsigned long *arg)
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{
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struct atm_qdisc_data *p = PRIV(sch);
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struct atm_flow_data *flow = (struct atm_flow_data *) *arg;
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struct atm_flow_data *flow = (struct atm_flow_data *)*arg;
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struct atm_flow_data *excess = NULL;
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struct rtattr *opt = tca[TCA_OPTIONS-1];
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struct rtattr *opt = tca[TCA_OPTIONS - 1];
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struct rtattr *tb[TCA_ATM_MAX];
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struct socket *sock;
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int fd,error,hdr_len;
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int fd, error, hdr_len;
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void *hdr;
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DPRINTK("atm_tc_change(sch %p,[qdisc %p],classid %x,parent %x,"
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"flow %p,opt %p)\n",sch,p,classid,parent,flow,opt);
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"flow %p,opt %p)\n", sch, p, classid, parent, flow, opt);
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/*
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* The concept of parents doesn't apply for this qdisc.
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*/
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@ -237,33 +234,36 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
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* class needs to be removed and a new one added. (This may be changed
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* later.)
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*/
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if (flow) return -EBUSY;
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if (flow)
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return -EBUSY;
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if (opt == NULL || rtattr_parse_nested(tb, TCA_ATM_MAX, opt))
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return -EINVAL;
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if (!tb[TCA_ATM_FD-1] || RTA_PAYLOAD(tb[TCA_ATM_FD-1]) < sizeof(fd))
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if (!tb[TCA_ATM_FD - 1] || RTA_PAYLOAD(tb[TCA_ATM_FD - 1]) < sizeof(fd))
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return -EINVAL;
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fd = *(int *) RTA_DATA(tb[TCA_ATM_FD-1]);
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DPRINTK("atm_tc_change: fd %d\n",fd);
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if (tb[TCA_ATM_HDR-1]) {
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hdr_len = RTA_PAYLOAD(tb[TCA_ATM_HDR-1]);
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hdr = RTA_DATA(tb[TCA_ATM_HDR-1]);
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}
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else {
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fd = *(int *)RTA_DATA(tb[TCA_ATM_FD - 1]);
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DPRINTK("atm_tc_change: fd %d\n", fd);
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if (tb[TCA_ATM_HDR - 1]) {
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hdr_len = RTA_PAYLOAD(tb[TCA_ATM_HDR - 1]);
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hdr = RTA_DATA(tb[TCA_ATM_HDR - 1]);
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} else {
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hdr_len = RFC1483LLC_LEN;
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hdr = NULL; /* default LLC/SNAP for IP */
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}
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if (!tb[TCA_ATM_EXCESS-1]) excess = NULL;
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if (!tb[TCA_ATM_EXCESS - 1])
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excess = NULL;
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else {
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if (RTA_PAYLOAD(tb[TCA_ATM_EXCESS-1]) != sizeof(u32))
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if (RTA_PAYLOAD(tb[TCA_ATM_EXCESS - 1]) != sizeof(u32))
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return -EINVAL;
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excess = (struct atm_flow_data *) atm_tc_get(sch,
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*(u32 *) RTA_DATA(tb[TCA_ATM_EXCESS-1]));
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if (!excess) return -ENOENT;
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excess = (struct atm_flow_data *)
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atm_tc_get(sch, *(u32 *)RTA_DATA(tb[TCA_ATM_EXCESS - 1]));
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if (!excess)
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return -ENOENT;
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}
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DPRINTK("atm_tc_change: type %d, payload %d, hdr_len %d\n",
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opt->rta_type,RTA_PAYLOAD(opt),hdr_len);
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if (!(sock = sockfd_lookup(fd,&error))) return error; /* f_count++ */
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DPRINTK("atm_tc_change: f_count %d\n",file_count(sock->file));
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opt->rta_type, RTA_PAYLOAD(opt), hdr_len);
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if (!(sock = sockfd_lookup(fd, &error)))
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return error; /* f_count++ */
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DPRINTK("atm_tc_change: f_count %d\n", file_count(sock->file));
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if (sock->ops->family != PF_ATMSVC && sock->ops->family != PF_ATMPVC) {
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error = -EPROTOTYPE;
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goto err_out;
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@ -276,37 +276,37 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
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error = -EINVAL;
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goto err_out;
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}
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if (find_flow(p,flow)) {
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if (find_flow(p, flow)) {
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error = -EEXIST;
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goto err_out;
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}
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}
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else {
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} else {
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int i;
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unsigned long cl;
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for (i = 1; i < 0x8000; i++) {
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classid = TC_H_MAKE(sch->handle,0x8000 | i);
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if (!(cl = atm_tc_get(sch,classid))) break;
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atm_tc_put(sch,cl);
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classid = TC_H_MAKE(sch->handle, 0x8000 | i);
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if (!(cl = atm_tc_get(sch, classid)))
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break;
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atm_tc_put(sch, cl);
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}
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}
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DPRINTK("atm_tc_change: new id %x\n",classid);
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flow = kmalloc(sizeof(struct atm_flow_data)+hdr_len,GFP_KERNEL);
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DPRINTK("atm_tc_change: flow %p\n",flow);
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DPRINTK("atm_tc_change: new id %x\n", classid);
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flow = kmalloc(sizeof(struct atm_flow_data) + hdr_len, GFP_KERNEL);
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DPRINTK("atm_tc_change: flow %p\n", flow);
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if (!flow) {
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error = -ENOBUFS;
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goto err_out;
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}
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memset(flow,0,sizeof(*flow));
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memset(flow, 0, sizeof(*flow));
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flow->filter_list = NULL;
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if (!(flow->q = qdisc_create_dflt(sch->dev,&pfifo_qdisc_ops,classid)))
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if (!(flow->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid)))
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flow->q = &noop_qdisc;
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DPRINTK("atm_tc_change: qdisc %p\n",flow->q);
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DPRINTK("atm_tc_change: qdisc %p\n", flow->q);
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flow->sock = sock;
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flow->vcc = ATM_SD(sock); /* speedup */
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flow->vcc->user_back = flow;
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DPRINTK("atm_tc_change: vcc %p\n",flow->vcc);
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DPRINTK("atm_tc_change: vcc %p\n", flow->vcc);
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flow->old_pop = flow->vcc->pop;
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flow->parent = p;
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flow->vcc->pop = sch_atm_pop;
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@ -317,50 +317,53 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
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p->link.next = flow;
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flow->hdr_len = hdr_len;
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if (hdr)
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memcpy(flow->hdr,hdr,hdr_len);
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memcpy(flow->hdr, hdr, hdr_len);
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else
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memcpy(flow->hdr,llc_oui_ip,sizeof(llc_oui_ip));
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*arg = (unsigned long) flow;
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memcpy(flow->hdr, llc_oui_ip, sizeof(llc_oui_ip));
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*arg = (unsigned long)flow;
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return 0;
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err_out:
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if (excess) atm_tc_put(sch,(unsigned long) excess);
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if (excess)
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atm_tc_put(sch, (unsigned long)excess);
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sockfd_put(sock);
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return error;
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}
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static int atm_tc_delete(struct Qdisc *sch,unsigned long arg)
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static int atm_tc_delete(struct Qdisc *sch, unsigned long arg)
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{
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struct atm_qdisc_data *p = PRIV(sch);
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struct atm_flow_data *flow = (struct atm_flow_data *) arg;
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struct atm_flow_data *flow = (struct atm_flow_data *)arg;
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DPRINTK("atm_tc_delete(sch %p,[qdisc %p],flow %p)\n",sch,p,flow);
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if (!find_flow(PRIV(sch),flow)) return -EINVAL;
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if (flow->filter_list || flow == &p->link) return -EBUSY;
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DPRINTK("atm_tc_delete(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
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if (!find_flow(PRIV(sch), flow))
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return -EINVAL;
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if (flow->filter_list || flow == &p->link)
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return -EBUSY;
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/*
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* Reference count must be 2: one for "keepalive" (set at class
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* creation), and one for the reference held when calling delete.
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*/
|
||||
if (flow->ref < 2) {
|
||||
printk(KERN_ERR "atm_tc_delete: flow->ref == %d\n",flow->ref);
|
||||
printk(KERN_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);
|
||||
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)
|
||||
static void atm_tc_walk(struct Qdisc *sch, struct qdisc_walker *walker)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct atm_flow_data *flow;
|
||||
|
||||
DPRINTK("atm_tc_walk(sch %p,[qdisc %p],walker %p)\n",sch,p,walker);
|
||||
if (walker->stop) return;
|
||||
DPRINTK("atm_tc_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
|
||||
if (walker->stop)
|
||||
return;
|
||||
for (flow = p->flows; flow; flow = flow->next) {
|
||||
if (walker->count >= walker->skip)
|
||||
if (walker->fn(sch,(unsigned long) flow,walker) < 0) {
|
||||
if (walker->fn(sch, (unsigned long)flow, walker) < 0) {
|
||||
walker->stop = 1;
|
||||
break;
|
||||
}
|
||||
|
|
@ -368,56 +371,56 @@ static void atm_tc_walk(struct Qdisc *sch,struct qdisc_walker *walker)
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
static struct tcf_proto **atm_tc_find_tcf(struct Qdisc *sch,unsigned long cl)
|
||||
static struct tcf_proto **atm_tc_find_tcf(struct Qdisc *sch, unsigned long cl)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct atm_flow_data *flow = (struct atm_flow_data *) cl;
|
||||
struct atm_flow_data *flow = (struct atm_flow_data *)cl;
|
||||
|
||||
DPRINTK("atm_tc_find_tcf(sch %p,[qdisc %p],flow %p)\n",sch,p,flow);
|
||||
DPRINTK("atm_tc_find_tcf(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
|
||||
return flow ? &flow->filter_list : &p->link.filter_list;
|
||||
}
|
||||
|
||||
|
||||
/* --------------------------- Qdisc operations ---------------------------- */
|
||||
|
||||
|
||||
static int atm_tc_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
||||
static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct atm_flow_data *flow = NULL ; /* @@@ */
|
||||
struct atm_flow_data *flow = NULL; /* @@@ */
|
||||
struct tcf_result res;
|
||||
int result;
|
||||
int ret = NET_XMIT_POLICED;
|
||||
|
||||
D2PRINTK("atm_tc_enqueue(skb %p,sch %p,[qdisc %p])\n",skb,sch,p);
|
||||
D2PRINTK("atm_tc_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
|
||||
result = TC_POLICE_OK; /* be nice to gcc */
|
||||
if (TC_H_MAJ(skb->priority) != sch->handle ||
|
||||
!(flow = (struct atm_flow_data *) atm_tc_get(sch,skb->priority)))
|
||||
!(flow = (struct atm_flow_data *)atm_tc_get(sch, skb->priority)))
|
||||
for (flow = p->flows; flow; flow = flow->next)
|
||||
if (flow->filter_list) {
|
||||
result = tc_classify(skb,flow->filter_list,
|
||||
result = tc_classify(skb, flow->filter_list,
|
||||
&res);
|
||||
if (result < 0) continue;
|
||||
flow = (struct atm_flow_data *) res.class;
|
||||
if (!flow) flow = lookup_flow(sch,res.classid);
|
||||
if (result < 0)
|
||||
continue;
|
||||
flow = (struct atm_flow_data *)res.class;
|
||||
if (!flow)
|
||||
flow = lookup_flow(sch, res.classid);
|
||||
break;
|
||||
}
|
||||
if (!flow) flow = &p->link;
|
||||
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 :-)*/
|
||||
/*@@@ looks good ... but it's not supposed to work :-) */
|
||||
#ifdef CONFIG_NET_CLS_POLICE
|
||||
switch (result) {
|
||||
case TC_POLICE_SHOT:
|
||||
kfree_skb(skb);
|
||||
break;
|
||||
case TC_POLICE_RECLASSIFY:
|
||||
if (flow->excess) flow = flow->excess;
|
||||
if (flow->excess)
|
||||
flow = flow->excess;
|
||||
else {
|
||||
ATM_SKB(skb)->atm_options |=
|
||||
ATM_ATMOPT_CLP;
|
||||
ATM_SKB(skb)->atm_options |= ATM_ATMOPT_CLP;
|
||||
break;
|
||||
}
|
||||
/* fall through */
|
||||
|
|
@ -432,9 +435,10 @@ static int atm_tc_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
|||
#ifdef CONFIG_NET_CLS_POLICE
|
||||
result == TC_POLICE_SHOT ||
|
||||
#endif
|
||||
(ret = flow->q->enqueue(skb,flow->q)) != 0) {
|
||||
(ret = flow->q->enqueue(skb, flow->q)) != 0) {
|
||||
sch->qstats.drops++;
|
||||
if (flow) flow->qstats.drops++;
|
||||
if (flow)
|
||||
flow->qstats.drops++;
|
||||
return ret;
|
||||
}
|
||||
sch->bstats.bytes += skb->len;
|
||||
|
|
@ -458,7 +462,6 @@ static int atm_tc_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
|||
return 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
|
||||
|
|
@ -466,69 +469,68 @@ static int atm_tc_enqueue(struct sk_buff *skb,struct Qdisc *sch)
|
|||
* non-ATM interfaces.
|
||||
*/
|
||||
|
||||
|
||||
static void sch_atm_dequeue(unsigned long data)
|
||||
{
|
||||
struct Qdisc *sch = (struct Qdisc *) data;
|
||||
struct Qdisc *sch = (struct Qdisc *)data;
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct atm_flow_data *flow;
|
||||
struct sk_buff *skb;
|
||||
|
||||
D2PRINTK("sch_atm_dequeue(sch %p,[qdisc %p])\n",sch,p);
|
||||
D2PRINTK("sch_atm_dequeue(sch %p,[qdisc %p])\n", sch, p);
|
||||
for (flow = p->link.next; flow; flow = flow->next)
|
||||
/*
|
||||
* If traffic is properly shaped, this won't generate nasty
|
||||
* little bursts. Otherwise, it may ... (but that's okay)
|
||||
*/
|
||||
while ((skb = flow->q->dequeue(flow->q))) {
|
||||
if (!atm_may_send(flow->vcc,skb->truesize)) {
|
||||
(void) flow->q->ops->requeue(skb,flow->q);
|
||||
if (!atm_may_send(flow->vcc, skb->truesize)) {
|
||||
(void)flow->q->ops->requeue(skb, flow->q);
|
||||
break;
|
||||
}
|
||||
D2PRINTK("atm_tc_dequeue: sending on class %p\n",flow);
|
||||
D2PRINTK("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);
|
||||
new = skb_realloc_headroom(skb, flow->hdr_len);
|
||||
dev_kfree_skb(skb);
|
||||
if (!new) continue;
|
||||
if (!new)
|
||||
continue;
|
||||
skb = new;
|
||||
}
|
||||
D2PRINTK("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,
|
||||
memcpy(skb_push(skb, flow->hdr_len), flow->hdr,
|
||||
flow->hdr_len);
|
||||
atomic_add(skb->truesize,
|
||||
&sk_atm(flow->vcc)->sk_wmem_alloc);
|
||||
/* atm.atm_options are already set by atm_tc_enqueue */
|
||||
(void) flow->vcc->send(flow->vcc,skb);
|
||||
flow->vcc->send(flow->vcc, skb);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static struct sk_buff *atm_tc_dequeue(struct Qdisc *sch)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct sk_buff *skb;
|
||||
|
||||
D2PRINTK("atm_tc_dequeue(sch %p,[qdisc %p])\n",sch,p);
|
||||
D2PRINTK("atm_tc_dequeue(sch %p,[qdisc %p])\n", sch, p);
|
||||
tasklet_schedule(&p->task);
|
||||
skb = p->link.q->dequeue(p->link.q);
|
||||
if (skb) sch->q.qlen--;
|
||||
if (skb)
|
||||
sch->q.qlen--;
|
||||
return skb;
|
||||
}
|
||||
|
||||
|
||||
static int atm_tc_requeue(struct sk_buff *skb,struct Qdisc *sch)
|
||||
static int atm_tc_requeue(struct sk_buff *skb, struct Qdisc *sch)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
int ret;
|
||||
|
||||
D2PRINTK("atm_tc_requeue(skb %p,sch %p,[qdisc %p])\n",skb,sch,p);
|
||||
ret = p->link.q->ops->requeue(skb,p->link.q);
|
||||
D2PRINTK("atm_tc_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
|
||||
ret = p->link.q->ops->requeue(skb, p->link.q);
|
||||
if (!ret) {
|
||||
sch->q.qlen++;
|
||||
sch->qstats.requeues++;
|
||||
|
|
@ -539,70 +541,67 @@ static int atm_tc_requeue(struct sk_buff *skb,struct Qdisc *sch)
|
|||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static unsigned int atm_tc_drop(struct Qdisc *sch)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct atm_flow_data *flow;
|
||||
unsigned int len;
|
||||
|
||||
DPRINTK("atm_tc_drop(sch %p,[qdisc %p])\n",sch,p);
|
||||
DPRINTK("atm_tc_drop(sch %p,[qdisc %p])\n", sch, p);
|
||||
for (flow = p->flows; flow; flow = flow->next)
|
||||
if (flow->q->ops->drop && (len = flow->q->ops->drop(flow->q)))
|
||||
return len;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int atm_tc_init(struct Qdisc *sch,struct rtattr *opt)
|
||||
static int atm_tc_init(struct Qdisc *sch, struct rtattr *opt)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
|
||||
DPRINTK("atm_tc_init(sch %p,[qdisc %p],opt %p)\n",sch,p,opt);
|
||||
DPRINTK("atm_tc_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
|
||||
p->flows = &p->link;
|
||||
if(!(p->link.q = qdisc_create_dflt(sch->dev,&pfifo_qdisc_ops,
|
||||
if (!(p->link.q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
|
||||
sch->handle)))
|
||||
p->link.q = &noop_qdisc;
|
||||
DPRINTK("atm_tc_init: link (%p) qdisc %p\n",&p->link,p->link.q);
|
||||
DPRINTK("atm_tc_init: link (%p) qdisc %p\n", &p->link, p->link.q);
|
||||
p->link.filter_list = NULL;
|
||||
p->link.vcc = NULL;
|
||||
p->link.sock = NULL;
|
||||
p->link.classid = sch->handle;
|
||||
p->link.ref = 1;
|
||||
p->link.next = NULL;
|
||||
tasklet_init(&p->task,sch_atm_dequeue,(unsigned long) sch);
|
||||
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 = PRIV(sch);
|
||||
struct atm_flow_data *flow;
|
||||
|
||||
DPRINTK("atm_tc_reset(sch %p,[qdisc %p])\n",sch,p);
|
||||
for (flow = p->flows; flow; flow = flow->next) qdisc_reset(flow->q);
|
||||
DPRINTK("atm_tc_reset(sch %p,[qdisc %p])\n", sch, p);
|
||||
for (flow = p->flows; flow; flow = flow->next)
|
||||
qdisc_reset(flow->q);
|
||||
sch->q.qlen = 0;
|
||||
}
|
||||
|
||||
|
||||
static void atm_tc_destroy(struct Qdisc *sch)
|
||||
{
|
||||
struct atm_qdisc_data *p = PRIV(sch);
|
||||
struct atm_flow_data *flow;
|
||||
|
||||
DPRINTK("atm_tc_destroy(sch %p,[qdisc %p])\n",sch,p);
|
||||
DPRINTK("atm_tc_destroy(sch %p,[qdisc %p])\n", sch, p);
|
||||
/* races ? */
|
||||
while ((flow = p->flows)) {
|
||||
tcf_destroy_chain(flow->filter_list);
|
||||
flow->filter_list = NULL;
|
||||
if (flow->ref > 1)
|
||||
printk(KERN_ERR "atm_destroy: %p->ref = %d\n",flow,
|
||||
printk(KERN_ERR "atm_destroy: %p->ref = %d\n", flow,
|
||||
flow->ref);
|
||||
atm_tc_put(sch,(unsigned long) flow);
|
||||
atm_tc_put(sch, (unsigned long)flow);
|
||||
if (p->flows == flow) {
|
||||
printk(KERN_ERR "atm_destroy: putting flow %p didn't "
|
||||
"kill it\n",flow);
|
||||
"kill it\n", flow);
|
||||
p->flows = flow->next; /* brute force */
|
||||
break;
|
||||
}
|
||||
|
|
@ -610,23 +609,23 @@ static void atm_tc_destroy(struct Qdisc *sch)
|
|||
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 = PRIV(sch);
|
||||
struct atm_flow_data *flow = (struct atm_flow_data *) cl;
|
||||
struct atm_flow_data *flow = (struct atm_flow_data *)cl;
|
||||
unsigned char *b = skb_tail_pointer(skb);
|
||||
struct rtattr *rta;
|
||||
|
||||
DPRINTK("atm_tc_dump_class(sch %p,[qdisc %p],flow %p,skb %p,tcm %p)\n",
|
||||
sch,p,flow,skb,tcm);
|
||||
if (!find_flow(p,flow)) return -EINVAL;
|
||||
sch, p, flow, skb, tcm);
|
||||
if (!find_flow(p, flow))
|
||||
return -EINVAL;
|
||||
tcm->tcm_handle = flow->classid;
|
||||
tcm->tcm_info = flow->q->handle;
|
||||
rta = (struct rtattr *) b;
|
||||
RTA_PUT(skb,TCA_OPTIONS,0,NULL);
|
||||
RTA_PUT(skb,TCA_ATM_HDR,flow->hdr_len,flow->hdr);
|
||||
rta = (struct rtattr *)b;
|
||||
RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
|
||||
RTA_PUT(skb, TCA_ATM_HDR, flow->hdr_len, flow->hdr);
|
||||
if (flow->vcc) {
|
||||
struct sockaddr_atmpvc pvc;
|
||||
int state;
|
||||
|
|
@ -635,16 +634,16 @@ static int atm_tc_dump_class(struct Qdisc *sch, unsigned long cl,
|
|||
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;
|
||||
RTA_PUT(skb,TCA_ATM_ADDR,sizeof(pvc),&pvc);
|
||||
RTA_PUT(skb, TCA_ATM_ADDR, sizeof(pvc), &pvc);
|
||||
state = ATM_VF2VS(flow->vcc->flags);
|
||||
RTA_PUT(skb,TCA_ATM_STATE,sizeof(state),&state);
|
||||
RTA_PUT(skb, TCA_ATM_STATE, sizeof(state), &state);
|
||||
}
|
||||
if (flow->excess)
|
||||
RTA_PUT(skb,TCA_ATM_EXCESS,sizeof(u32),&flow->classid);
|
||||
RTA_PUT(skb, TCA_ATM_EXCESS, sizeof(u32), &flow->classid);
|
||||
else {
|
||||
static u32 zero;
|
||||
|
||||
RTA_PUT(skb,TCA_ATM_EXCESS,sizeof(zero),&zero);
|
||||
RTA_PUT(skb, TCA_ATM_EXCESS, sizeof(zero), &zero);
|
||||
}
|
||||
rta->rta_len = skb_tail_pointer(skb) - b;
|
||||
return skb->len;
|
||||
|
|
@ -657,7 +656,7 @@ 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;
|
||||
struct atm_flow_data *flow = (struct atm_flow_data *)arg;
|
||||
|
||||
flow->qstats.qlen = flow->q->q.qlen;
|
||||
|
||||
|
|
@ -689,7 +688,6 @@ static struct Qdisc_class_ops atm_class_ops = {
|
|||
};
|
||||
|
||||
static struct Qdisc_ops atm_qdisc_ops = {
|
||||
.next = NULL,
|
||||
.cl_ops = &atm_class_ops,
|
||||
.id = "atm",
|
||||
.priv_size = sizeof(struct atm_qdisc_data),
|
||||
|
|
@ -700,12 +698,10 @@ static struct Qdisc_ops atm_qdisc_ops = {
|
|||
.init = atm_tc_init,
|
||||
.reset = atm_tc_reset,
|
||||
.destroy = atm_tc_destroy,
|
||||
.change = NULL,
|
||||
.dump = atm_tc_dump,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
||||
static int __init atm_init(void)
|
||||
{
|
||||
return register_qdisc(&atm_qdisc_ops);
|
||||
|
|
|
|||
Loading…
Reference in a new issue