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[PKT_SCHED] SFQ: whitespace cleanup 

Add whitespace around operators, and add a few blank lines to improve
readability.

Signed-off-by: Stephen Hemminger <stephen.hemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2008-01-20 17:20:56 -08:00 committed by David S. Miller
parent d46f8dd87d
commit 6f9e98f7a9
1 changed files with 25 additions and 17 deletions
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42
net/sched/sch_sfq.c
View File

@ -122,7 +122,7 @@ static unsigned sfq_hash(struct sfq_sched_data *q, struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
h = iph->daddr;
h2 = iph->saddr^iph->protocol;
h2 = iph->saddr ^ iph->protocol;
if (!(iph->frag_off&htons(IP_MF|IP_OFFSET)) &&
(iph->protocol == IPPROTO_TCP ||
iph->protocol == IPPROTO_UDP ||
@ -137,7 +137,7 @@ static unsigned sfq_hash(struct sfq_sched_data *q, struct sk_buff *skb)
{
struct ipv6hdr *iph = ipv6_hdr(skb);
h = iph->daddr.s6_addr32[3];
h2 = iph->saddr.s6_addr32[3]^iph->nexthdr;
h2 = iph->saddr.s6_addr32[3] ^ iph->nexthdr;
if (iph->nexthdr == IPPROTO_TCP ||
iph->nexthdr == IPPROTO_UDP ||
iph->nexthdr == IPPROTO_UDPLITE ||
@ -148,9 +148,10 @@ static unsigned sfq_hash(struct sfq_sched_data *q, struct sk_buff *skb)
break;
}
default:
h = (u32)(unsigned long)skb->dst^skb->protocol;
h2 = (u32)(unsigned long)skb->sk;
h = (unsigned long)skb->dst ^ skb->protocol;
h2 = (unsigned long)skb->sk;
}
return sfq_fold_hash(q, h, h2);
}
@ -208,7 +209,7 @@ static unsigned int sfq_drop(struct Qdisc *sch)
drop a packet from it */
if (d > 1) {
sfq_index x = q->dep[d+SFQ_DEPTH].next;
sfq_index x = q->dep[d + SFQ_DEPTH].next;
skb = q->qs[x].prev;
len = skb->len;
__skb_unlink(skb, &q->qs[x]);
@ -241,7 +242,7 @@ static unsigned int sfq_drop(struct Qdisc *sch)
}
static int
sfq_enqueue(struct sk_buff *skb, struct Qdisc* sch)
sfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
struct sfq_sched_data *q = qdisc_priv(sch);
unsigned hash = sfq_hash(q, skb);
@ -252,6 +253,7 @@ sfq_enqueue(struct sk_buff *skb, struct Qdisc* sch)
q->ht[hash] = x = q->dep[SFQ_DEPTH].next;
q->hash[x] = hash;
}
/* If selected queue has length q->limit, this means that
* all another queues are empty and that we do simple tail drop,
* i.e. drop _this_ packet.
@ -284,7 +286,7 @@ sfq_enqueue(struct sk_buff *skb, struct Qdisc* sch)
}
static int
sfq_requeue(struct sk_buff *skb, struct Qdisc* sch)
sfq_requeue(struct sk_buff *skb, struct Qdisc *sch)
{
struct sfq_sched_data *q = qdisc_priv(sch);
unsigned hash = sfq_hash(q, skb);
@ -295,6 +297,7 @@ sfq_requeue(struct sk_buff *skb, struct Qdisc* sch)
q->ht[hash] = x = q->dep[SFQ_DEPTH].next;
q->hash[x] = hash;
}
sch->qstats.backlog += skb->len;
__skb_queue_head(&q->qs[x], skb);
/* If selected queue has length q->limit+1, this means that
@ -310,6 +313,7 @@ sfq_requeue(struct sk_buff *skb, struct Qdisc* sch)
kfree_skb(skb);
return NET_XMIT_CN;
}
sfq_inc(q, x);
if (q->qs[x].qlen == 1) { /* The flow is new */
if (q->tail == SFQ_DEPTH) { /* It is the first flow */
@ -322,6 +326,7 @@ sfq_requeue(struct sk_buff *skb, struct Qdisc* sch)
q->tail = x;
}
}
if (++sch->q.qlen <= q->limit) {
sch->qstats.requeues++;
return 0;
@ -336,7 +341,7 @@ sfq_requeue(struct sk_buff *skb, struct Qdisc* sch)
static struct sk_buff *
sfq_dequeue(struct Qdisc* sch)
sfq_dequeue(struct Qdisc *sch)
{
struct sfq_sched_data *q = qdisc_priv(sch);
struct sk_buff *skb;
@ -373,7 +378,7 @@ sfq_dequeue(struct Qdisc* sch)
}
static void
sfq_reset(struct Qdisc* sch)
sfq_reset(struct Qdisc *sch)
{
struct sk_buff *skb;
@ -383,7 +388,7 @@ sfq_reset(struct Qdisc* sch)
static void sfq_perturbation(unsigned long arg)
{
struct Qdisc *sch = (struct Qdisc*)arg;
struct Qdisc *sch = (struct Qdisc *)arg;
struct sfq_sched_data *q = qdisc_priv(sch);
q->perturbation = net_random();
@ -403,7 +408,7 @@ static int sfq_change(struct Qdisc *sch, struct rtattr *opt)
sch_tree_lock(sch);
q->quantum = ctl->quantum ? : psched_mtu(sch->dev);
q->perturb_period = ctl->perturb_period*HZ;
q->perturb_period = ctl->perturb_period * HZ;
if (ctl->limit)
q->limit = min_t(u32, ctl->limit, SFQ_DEPTH - 1);
@ -430,13 +435,15 @@ static int sfq_init(struct Qdisc *sch, struct rtattr *opt)
q->perturb_timer.data = (unsigned long)sch;;
init_timer_deferrable(&q->perturb_timer);
for (i=0; i<SFQ_HASH_DIVISOR; i++)
for (i = 0; i < SFQ_HASH_DIVISOR; i++)
q->ht[i] = SFQ_DEPTH;
for (i=0; i<SFQ_DEPTH; i++) {
for (i = 0; i < SFQ_DEPTH; i++) {
skb_queue_head_init(&q->qs[i]);
q->dep[i+SFQ_DEPTH].next = i+SFQ_DEPTH;
q->dep[i+SFQ_DEPTH].prev = i+SFQ_DEPTH;
q->dep[i + SFQ_DEPTH].next = i + SFQ_DEPTH;
q->dep[i + SFQ_DEPTH].prev = i + SFQ_DEPTH;
}
q->limit = SFQ_DEPTH - 1;
q->max_depth = 0;
q->tail = SFQ_DEPTH;
@ -449,7 +456,8 @@ static int sfq_init(struct Qdisc *sch, struct rtattr *opt)
if (err)
return err;
}
for (i=0; i<SFQ_DEPTH; i++)
for (i = 0; i < SFQ_DEPTH; i++)
sfq_link(q, i);
return 0;
}
@ -467,7 +475,7 @@ static int sfq_dump(struct Qdisc *sch, struct sk_buff *skb)
struct tc_sfq_qopt opt;
opt.quantum = q->quantum;
opt.perturb_period = q->perturb_period/HZ;
opt.perturb_period = q->perturb_period / HZ;
opt.limit = q->limit;
opt.divisor = SFQ_HASH_DIVISOR;