diff options
Diffstat (limited to 'net/sched/sch_sfq.c')
| -rw-r--r-- | net/sched/sch_sfq.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 60d47180f04..1af2f73906d 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -237,10 +237,12 @@ static inline void sfq_link(struct sfq_sched_data *q, sfq_index x) } #define sfq_unlink(q, x, n, p) \ - n = q->slots[x].dep.next; \ - p = q->slots[x].dep.prev; \ - sfq_dep_head(q, p)->next = n; \ - sfq_dep_head(q, n)->prev = p + do { \ + n = q->slots[x].dep.next; \ + p = q->slots[x].dep.prev; \ + sfq_dep_head(q, p)->next = n; \ + sfq_dep_head(q, n)->prev = p; \ + } while (0) static inline void sfq_dec(struct sfq_sched_data *q, sfq_index x) @@ -469,11 +471,15 @@ enqueue: if (slot->qlen == 1) { /* The flow is new */ if (q->tail == NULL) { /* It is the first flow */ slot->next = x; - q->tail = slot; } else { slot->next = q->tail->next; q->tail->next = x; } + /* We put this flow at the end of our flow list. + * This might sound unfair for a new flow to wait after old ones, + * but we could endup servicing new flows only, and freeze old ones. + */ + q->tail = slot; /* We could use a bigger initial quantum for new flows */ slot->allot = q->scaled_quantum; } @@ -623,7 +629,7 @@ static void sfq_perturbation(unsigned long arg) spinlock_t *root_lock = qdisc_lock(qdisc_root_sleeping(sch)); spin_lock(root_lock); - q->perturbation = net_random(); + q->perturbation = prandom_u32(); if (!q->filter_list && q->tail) sfq_rehash(sch); spin_unlock(root_lock); @@ -692,7 +698,7 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt) del_timer(&q->perturb_timer); if (q->perturb_period) { mod_timer(&q->perturb_timer, jiffies + q->perturb_period); - q->perturbation = net_random(); + q->perturbation = prandom_u32(); } sch_tree_unlock(sch); kfree(p); @@ -710,12 +716,7 @@ static void *sfq_alloc(size_t sz) static void sfq_free(void *addr) { - if (addr) { - if (is_vmalloc_addr(addr)) - vfree(addr); - else - kfree(addr); - } + kvfree(addr); } static void sfq_destroy(struct Qdisc *sch) @@ -753,7 +754,7 @@ static int sfq_init(struct Qdisc *sch, struct nlattr *opt) q->quantum = psched_mtu(qdisc_dev(sch)); q->scaled_quantum = SFQ_ALLOT_SIZE(q->quantum); q->perturb_period = 0; - q->perturbation = net_random(); + q->perturbation = prandom_u32(); if (opt) { int err = sfq_change(sch, opt); @@ -808,7 +809,8 @@ static int sfq_dump(struct Qdisc *sch, struct sk_buff *skb) memcpy(&opt.stats, &q->stats, sizeof(opt.stats)); opt.flags = q->flags; - NLA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt); + if (nla_put(skb, TCA_OPTIONS, sizeof(opt), &opt)) + goto nla_put_failure; return skb->len; |