[PKT_SCHED] sch_atm: style cleanup

ATM scheduler clean house:
  * get rid of printk and qdisc_priv() wrapper
  * split some assignment in if() statements
  * whitespace and line breaks.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 65 insertions, 74 deletions

diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index d870a4115d9a..734be9d37d46 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -16,18 +16,6 @@
 
 extern struct socket *sockfd_lookup(int fd, int *err);  /* @@@ fix this */
 
-#if 0 /* control */
-#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
-#else
-#define DPRINTK(format,args...)
-#endif
-
-#if 0 /* data */
-#define D2PRINTK(format,args...) printk(KERN_DEBUG format,##args)
-#else
-#define D2PRINTK(format,args...)
-#endif
-
 /*
  * The ATM queuing discipline provides a framework for invoking classifiers
  * (aka "filters"), which in turn select classes of this queuing discipline.
@@ -49,7 +37,6 @@ extern struct socket *sockfd_lookup(int fd, int *err);	/* @@@ fix this */
  *  - should lock the flow while there is data in the queue (?)
  */
 
-#define PRIV(sch) qdisc_priv(sch)
 #define VCC2FLOW(vcc) ((struct atm_flow_data *) ((vcc)->user_back))
 
 struct atm_flow_data {
@@ -57,7 +44,7 @@ struct atm_flow_data {
         struct tcf_proto        *filter_list;
         struct atm_vcc          *vcc;   /* VCC; NULL if VCC is closed */
         void                    (*old_pop)(struct atm_vcc *vcc,
-                                           struct sk_buff * skb); /* chaining */
+                                           struct sk_buff *skb); /* chaining */
         struct atm_qdisc_data   *parent;        /* parent qdisc */
         struct socket           *sock;          /* for closing */
         u32                     classid;        /* x:y type ID */
@@ -84,17 +71,17 @@ static int find_flow(struct atm_qdisc_data *qdisc, struct atm_flow_data *flow)
 {
         struct atm_flow_data *walk;
 
-        DPRINTK("find_flow(qdisc %p,flow %p)\n", qdisc, flow);
+        pr_debug("find_flow(qdisc %p,flow %p)\n", qdisc, flow);
         for (walk = qdisc->flows; walk; walk = walk->next)
                 if (walk == flow)
                         return 1;
-        DPRINTK("find_flow: not found\n");
+        pr_debug("find_flow: not found\n");
         return 0;
 }
 
 static inline struct atm_flow_data *lookup_flow(struct Qdisc *sch, u32 classid)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow;
 
         for (flow = p->flows; flow; flow = flow->next)
@@ -106,10 +93,10 @@ static inline struct atm_flow_data *lookup_flow(struct Qdisc *sch, u32 classid)
 static int atm_tc_graft(struct Qdisc *sch, unsigned long arg,
                         struct Qdisc *new, struct Qdisc **old)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow = (struct atm_flow_data *)arg;
 
-        DPRINTK("atm_tc_graft(sch %p,[qdisc %p],flow %p,new %p,old %p)\n",
+        pr_debug("atm_tc_graft(sch %p,[qdisc %p],flow %p,new %p,old %p)\n",
                 sch, p, flow, new, old);
         if (!find_flow(p, flow))
                 return -EINVAL;
@@ -125,20 +112,20 @@ static struct Qdisc *atm_tc_leaf(struct Qdisc *sch, unsigned long cl)
 {
         struct atm_flow_data *flow = (struct atm_flow_data *)cl;
 
-        DPRINTK("atm_tc_leaf(sch %p,flow %p)\n", sch, flow);
+        pr_debug("atm_tc_leaf(sch %p,flow %p)\n", sch, flow);
         return flow ? flow->q : NULL;
 }
 
 static unsigned long atm_tc_get(struct Qdisc *sch, u32 classid)
 {
-        struct atm_qdisc_data *p __maybe_unused = PRIV(sch);
+        struct atm_qdisc_data *p __maybe_unused = qdisc_priv(sch);
         struct atm_flow_data *flow;
 
-        DPRINTK("atm_tc_get(sch %p,[qdisc %p],classid %x)\n", sch, p, classid);
+        pr_debug("atm_tc_get(sch %p,[qdisc %p],classid %x)\n", sch, p, classid);
         flow = lookup_flow(sch, classid);
         if (flow)
                 flow->ref++;
-        DPRINTK("atm_tc_get: flow %p\n", flow);
+        pr_debug("atm_tc_get: flow %p\n", flow);
         return (unsigned long)flow;
 }
 
@@ -155,14 +142,14 @@ static unsigned long atm_tc_bind_filter(struct Qdisc *sch,
  */
 static void atm_tc_put(struct Qdisc *sch, unsigned long cl)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow = (struct atm_flow_data *)cl;
         struct atm_flow_data **prev;
 
-        DPRINTK("atm_tc_put(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
+        pr_debug("atm_tc_put(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
         if (--flow->ref)
                 return;
-        DPRINTK("atm_tc_put: destroying\n");
+        pr_debug("atm_tc_put: destroying\n");
         for (prev = &p->flows; *prev; prev = &(*prev)->next)
                 if (*prev == flow)
                         break;
@@ -171,11 +158,11 @@ static void atm_tc_put(struct Qdisc *sch, unsigned long cl)
                 return;
         }
         *prev = flow->next;
-        DPRINTK("atm_tc_put: qdisc %p\n", flow->q);
+        pr_debug("atm_tc_put: qdisc %p\n", flow->q);
         qdisc_destroy(flow->q);
         tcf_destroy_chain(flow->filter_list);
         if (flow->sock) {
-                DPRINTK("atm_tc_put: f_count %d\n",
+                pr_debug("atm_tc_put: f_count %d\n",
                         file_count(flow->sock->file));
                 flow->vcc->pop = flow->old_pop;
                 sockfd_put(flow->sock);
@@ -194,7 +181,7 @@ static void sch_atm_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 {
         struct atm_qdisc_data *p = VCC2FLOW(vcc)->parent;
 
-        D2PRINTK("sch_atm_pop(vcc %p,skb %p,[qdisc %p])\n", vcc, skb, p);
+        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);
 }
@@ -211,7 +198,7 @@ static const u8 llc_oui_ip[] = {
 static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
                          struct rtattr **tca, unsigned long *arg)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        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 rtattr *opt = tca[TCA_OPTIONS - 1];
@@ -220,7 +207,7 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
         int fd, error, hdr_len;
         void *hdr;
 
-        DPRINTK("atm_tc_change(sch %p,[qdisc %p],classid %x,parent %x,"
+        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.
@@ -241,7 +228,7 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
         if (!tb[TCA_ATM_FD - 1] || RTA_PAYLOAD(tb[TCA_ATM_FD - 1]) < sizeof(fd))
                 return -EINVAL;
         fd = *(int *)RTA_DATA(tb[TCA_ATM_FD - 1]);
-        DPRINTK("atm_tc_change: fd %d\n", fd);
+        pr_debug("atm_tc_change: fd %d\n", fd);
         if (tb[TCA_ATM_HDR - 1]) {
                 hdr_len = RTA_PAYLOAD(tb[TCA_ATM_HDR - 1]);
                 hdr = RTA_DATA(tb[TCA_ATM_HDR - 1]);
@@ -259,11 +246,12 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
                 if (!excess)
                         return -ENOENT;
         }
-        DPRINTK("atm_tc_change: type %d, payload %d, hdr_len %d\n",
-                opt->rta_type, RTA_PAYLOAD(opt), hdr_len);
-        if (!(sock = sockfd_lookup(fd, &error)))
+        pr_debug("atm_tc_change: type %d, payload %lu, hdr_len %d\n",
+                 opt->rta_type, RTA_PAYLOAD(opt), hdr_len);
+        sock = sockfd_lookup(fd, &error);
+        if (!sock)
                 return error;   /* f_count++ */
-        DPRINTK("atm_tc_change: f_count %d\n", file_count(sock->file));
+        pr_debug("atm_tc_change: f_count %d\n", file_count(sock->file));
         if (sock->ops->family != PF_ATMSVC && sock->ops->family != PF_ATMPVC) {
                 error = -EPROTOTYPE;
                 goto err_out;
@@ -272,7 +260,7 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
            on vcc->send */
         if (classid) {
                 if (TC_H_MAJ(classid ^ sch->handle)) {
-                        DPRINTK("atm_tc_change: classid mismatch\n");
+                        pr_debug("atm_tc_change: classid mismatch\n");
                         error = -EINVAL;
                         goto err_out;
                 }
@@ -286,26 +274,28 @@ static int atm_tc_change(struct Qdisc *sch, u32 classid, u32 parent,
 
                 for (i = 1; i < 0x8000; i++) {
                         classid = TC_H_MAKE(sch->handle, 0x8000 | i);
-                        if (!(cl = atm_tc_get(sch, classid)))
+                        cl = atm_tc_get(sch, classid);
+                        if (!cl)
                                 break;
                         atm_tc_put(sch, cl);
                 }
         }
-        DPRINTK("atm_tc_change: new id %x\n", classid);
+        pr_debug("atm_tc_change: new id %x\n", classid);
         flow = kzalloc(sizeof(struct atm_flow_data) + hdr_len, GFP_KERNEL);
-        DPRINTK("atm_tc_change: flow %p\n", flow);
+        pr_debug("atm_tc_change: flow %p\n", flow);
         if (!flow) {
                 error = -ENOBUFS;
                 goto err_out;
         }
         flow->filter_list = NULL;
-        if (!(flow->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid)))
+        flow->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid);
+        if (!flow->q)
                 flow->q = &noop_qdisc;
-        DPRINTK("atm_tc_change: qdisc %p\n", flow->q);
+        pr_debug("atm_tc_change: qdisc %p\n", flow->q);
         flow->sock = sock;
         flow->vcc = ATM_SD(sock);       /* speedup */
         flow->vcc->user_back = flow;
-        DPRINTK("atm_tc_change: vcc %p\n", flow->vcc);
+        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;
@@ -330,11 +320,11 @@ err_out:
 
 static int atm_tc_delete(struct Qdisc *sch, unsigned long arg)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow = (struct atm_flow_data *)arg;
 
-        DPRINTK("atm_tc_delete(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
-        if (!find_flow(PRIV(sch), flow))
+        pr_debug("atm_tc_delete(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
+        if (!find_flow(qdisc_priv(sch), flow))
                 return -EINVAL;
         if (flow->filter_list || flow == &p->link)
                 return -EBUSY;
@@ -354,10 +344,10 @@ static int atm_tc_delete(struct Qdisc *sch, unsigned long arg)
 
 static void atm_tc_walk(struct Qdisc *sch, struct qdisc_walker *walker)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow;
 
-        DPRINTK("atm_tc_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
+        pr_debug("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) {
@@ -372,10 +362,10 @@ 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)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         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);
+        pr_debug("atm_tc_find_tcf(sch %p,[qdisc %p],flow %p)\n", sch, p, flow);
         return flow ? &flow->filter_list : &p->link.filter_list;
 }
 
@@ -383,13 +373,13 @@ static struct tcf_proto **atm_tc_find_tcf(struct Qdisc *sch, unsigned long cl)
 
 static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         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);
+        pr_debug("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)))
@@ -430,7 +420,8 @@ static int atm_tc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 #endif
         }
 
-        if ((ret = flow->q->enqueue(skb, flow->q)) != 0) {
+        ret = flow->q->enqueue(skb, flow->q);
+        if (ret != 0) {
 drop: __maybe_unused
                 sch->qstats.drops++;
                 if (flow)
@@ -468,11 +459,11 @@ drop: __maybe_unused
 static void sch_atm_dequeue(unsigned long data)
 {
         struct Qdisc *sch = (struct Qdisc *)data;
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow;
         struct sk_buff *skb;
 
-        D2PRINTK("sch_atm_dequeue(sch %p,[qdisc %p])\n", sch, p);
+        pr_debug("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
@@ -483,7 +474,7 @@ static void sch_atm_dequeue(unsigned long data)
                                 (void)flow->q->ops->requeue(skb, flow->q);
                                 break;
                         }
-                        D2PRINTK("atm_tc_dequeue: sending on class %p\n", flow);
+                        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) {
@@ -495,7 +486,7 @@ static void sch_atm_dequeue(unsigned long data)
                                         continue;
                                 skb = new;
                         }
-                        D2PRINTK("sch_atm_dequeue: ip %p, data %p\n",
+                        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,
@@ -509,10 +500,10 @@ static void sch_atm_dequeue(unsigned long data)
 
 static struct sk_buff *atm_tc_dequeue(struct Qdisc *sch)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct sk_buff *skb;
 
-        D2PRINTK("atm_tc_dequeue(sch %p,[qdisc %p])\n", sch, p);
+        pr_debug("atm_tc_dequeue(sch %p,[qdisc %p])\n", sch, p);
         tasklet_schedule(&p->task);
         skb = p->link.q->dequeue(p->link.q);
         if (skb)
@@ -522,10 +513,10 @@ static struct sk_buff *atm_tc_dequeue(struct Qdisc *sch)
 
 static int atm_tc_requeue(struct sk_buff *skb, struct Qdisc *sch)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         int ret;
 
-        D2PRINTK("atm_tc_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
+        pr_debug("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++;
@@ -539,11 +530,11 @@ static int atm_tc_requeue(struct sk_buff *skb, struct Qdisc *sch)
 
 static unsigned int atm_tc_drop(struct Qdisc *sch)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow;
         unsigned int len;
 
-        DPRINTK("atm_tc_drop(sch %p,[qdisc %p])\n", sch, p);
+        pr_debug("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;
@@ -552,14 +543,14 @@ static unsigned int atm_tc_drop(struct Qdisc *sch)
 
 static int atm_tc_init(struct Qdisc *sch, struct rtattr *opt)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
 
-        DPRINTK("atm_tc_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt);
+        pr_debug("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,
-                                            sch->handle)))
+        p->link.q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, sch->handle);
+        if (!p->link.q)
                 p->link.q = &noop_qdisc;
-        DPRINTK("atm_tc_init: link (%p) qdisc %p\n", &p->link, p->link.q);
+        pr_debug("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;
@@ -572,10 +563,10 @@ static int atm_tc_init(struct Qdisc *sch, struct rtattr *opt)
 
 static void atm_tc_reset(struct Qdisc *sch)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow;
 
-        DPRINTK("atm_tc_reset(sch %p,[qdisc %p])\n", sch, p);
+        pr_debug("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;
@@ -583,10 +574,10 @@ static void atm_tc_reset(struct Qdisc *sch)
 
 static void atm_tc_destroy(struct Qdisc *sch)
 {
-        struct atm_qdisc_data *p = PRIV(sch);
+        struct atm_qdisc_data *p = qdisc_priv(sch);
         struct atm_flow_data *flow;
 
-        DPRINTK("atm_tc_destroy(sch %p,[qdisc %p])\n", sch, p);
+        pr_debug("atm_tc_destroy(sch %p,[qdisc %p])\n", sch, p);
         /* races ? */
         while ((flow = p->flows)) {
                 tcf_destroy_chain(flow->filter_list);
@@ -608,12 +599,12 @@ static void atm_tc_destroy(struct Qdisc *sch)
 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_qdisc_data *p = qdisc_priv(sch);
         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",
+        pr_debug("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;