diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/generic-2.6/patches-2.6.23/200-sched_esfq.patch | 436 |
1 files changed, 219 insertions, 217 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.23/200-sched_esfq.patch b/target/linux/generic-2.6/patches-2.6.23/200-sched_esfq.patch index 4e626c5888..b68fafef7b 100644 --- a/target/linux/generic-2.6/patches-2.6.23/200-sched_esfq.patch +++ b/target/linux/generic-2.6/patches-2.6.23/200-sched_esfq.patch @@ -1,13 +1,12 @@ -Index: linux-2.6.23-rc6/include/linux/pkt_sched.h -=================================================================== ---- linux-2.6.23-rc6.orig/include/linux/pkt_sched.h 2007-09-21 16:23:53.000000000 +0800 -+++ linux-2.6.23-rc6/include/linux/pkt_sched.h 2007-09-21 16:24:04.000000000 +0800 -@@ -155,8 +155,40 @@ +diff -Naur linux-2.6.21.5.orig/include/linux/pkt_sched.h linux-2.6.21.5/include/linux/pkt_sched.h +--- linux-2.6.21.5.orig/include/linux/pkt_sched.h 2007-06-11 11:37:06.000000000 -0700 ++++ linux-2.6.21.5/include/linux/pkt_sched.h 2007-06-22 22:53:46.000000000 -0700 +@@ -146,8 +146,37 @@ * * The only reason for this is efficiency, it is possible * to change these parameters in compile time. -+ * -+ * If you need to play with these values use esfq instead. ++ * ++ * If you need to play with these values, use esfq instead. */ +/* ESFQ section */ @@ -19,15 +18,12 @@ Index: linux-2.6.23-rc6/include/linux/pkt_sched.h + TCA_SFQ_HASH_DST, + TCA_SFQ_HASH_SRC, + TCA_SFQ_HASH_FWMARK, -+ /* direct */ -+ TCA_SFQ_HASH_DSTDIR, -+ TCA_SFQ_HASH_SRCDIR, -+ TCA_SFQ_HASH_FWMARKDIR, + /* conntrack */ + TCA_SFQ_HASH_CTORIGDST, + TCA_SFQ_HASH_CTORIGSRC, + TCA_SFQ_HASH_CTREPLDST, + TCA_SFQ_HASH_CTREPLSRC, ++ TCA_SFQ_HASH_CTNATCHG, +}; + +struct tc_esfq_qopt @@ -43,11 +39,10 @@ Index: linux-2.6.23-rc6/include/linux/pkt_sched.h /* RED section */ enum -Index: linux-2.6.23-rc6/net/sched/Kconfig -=================================================================== ---- linux-2.6.23-rc6.orig/net/sched/Kconfig 2007-09-21 16:23:53.000000000 +0800 -+++ linux-2.6.23-rc6/net/sched/Kconfig 2007-09-21 16:24:04.000000000 +0800 -@@ -144,6 +144,26 @@ +diff -Naur linux-2.6.21.5.orig/net/sched/Kconfig linux-2.6.21.5/net/sched/Kconfig +--- linux-2.6.21.5.orig/net/sched/Kconfig 2007-06-11 11:37:06.000000000 -0700 ++++ linux-2.6.21.5/net/sched/Kconfig 2007-06-23 14:11:02.000000000 -0700 +@@ -189,6 +189,37 @@ To compile this code as a module, choose M here: the module will be called sch_sfq. @@ -67,18 +62,28 @@ Index: linux-2.6.23-rc6/net/sched/Kconfig + flows. The original SFQ discipline hashes by connection; ESFQ add + several other hashing methods, such as by src IP or by dst IP, which + can be more fair to users in some networking situations. -+ ++ + To compile this code as a module, choose M here: the + module will be called sch_esfq. + ++config NET_SCH_ESFQ_NFCT ++ bool "Connection Tracking Hash Types" ++ depends on NET_SCH_ESFQ && NF_CONNTRACK ++ ---help--- ++ Say Y here to enable support for hashing based on netfilter connection ++ tracking information. This is useful for a router that is also using ++ NAT to connect privately-addressed hosts to the Internet. If you want ++ to provide fair distribution of upstream bandwidth, ESFQ must use ++ connection tracking information, since all outgoing packets will share ++ the same source address. ++ config NET_SCH_TEQL tristate "True Link Equalizer (TEQL)" ---help--- -Index: linux-2.6.23-rc6/net/sched/Makefile -=================================================================== ---- linux-2.6.23-rc6.orig/net/sched/Makefile 2007-09-21 16:23:53.000000000 +0800 -+++ linux-2.6.23-rc6/net/sched/Makefile 2007-09-21 16:24:04.000000000 +0800 -@@ -22,6 +22,7 @@ +diff -Naur linux-2.6.21.5.orig/net/sched/Makefile linux-2.6.21.5/net/sched/Makefile +--- linux-2.6.21.5.orig/net/sched/Makefile 2007-06-11 11:37:06.000000000 -0700 ++++ linux-2.6.21.5/net/sched/Makefile 2007-06-22 22:53:46.000000000 -0700 +@@ -23,6 +23,7 @@ obj-$(CONFIG_NET_SCH_INGRESS) += sch_ingress.o obj-$(CONFIG_NET_SCH_DSMARK) += sch_dsmark.o obj-$(CONFIG_NET_SCH_SFQ) += sch_sfq.o @@ -86,11 +91,10 @@ Index: linux-2.6.23-rc6/net/sched/Makefile obj-$(CONFIG_NET_SCH_TBF) += sch_tbf.o obj-$(CONFIG_NET_SCH_TEQL) += sch_teql.o obj-$(CONFIG_NET_SCH_PRIO) += sch_prio.o -Index: linux-2.6.23-rc6/net/sched/sch_esfq.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.23-rc6/net/sched/sch_esfq.c 2007-09-21 16:24:04.000000000 +0800 -@@ -0,0 +1,704 @@ +diff -Naur linux-2.6.21.5.orig/net/sched/sch_esfq.c linux-2.6.21.5/net/sched/sch_esfq.c +--- linux-2.6.21.5.orig/net/sched/sch_esfq.c 1969-12-31 16:00:00.000000000 -0800 ++++ linux-2.6.21.5/net/sched/sch_esfq.c 2007-06-23 19:18:00.000000000 -0700 +@@ -0,0 +1,702 @@ +/* + * net/sched/sch_esfq.c Extended Stochastic Fairness Queueing discipline. + * @@ -111,9 +115,9 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + * Corey Hickey, <bugfood-c@fatooh.org> + * Maintenance of the Linux 2.6 port. + * Added fwmark hash (thanks to Robert Kurjata). -+ * Added direct hashing for src, dst, and fwmark. + * Added usage of jhash. -+ * ++ * Added conntrack support. ++ * Added ctnatchg hash (thanks to Ben Pfountz). + */ + +#include <linux/module.h> @@ -143,30 +147,26 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c +#include <net/sock.h> +#include <net/pkt_sched.h> +#include <linux/jhash.h> -+ -+#ifdef CONFIG_NF_CONNTRACK_ENABLED +#include <net/netfilter/nf_conntrack.h> -+#endif + +/* Stochastic Fairness Queuing algorithm. + For more comments look at sch_sfq.c. + The difference is that you can change limit, depth, + hash table size and choose alternate hash types. -+ ++ + classic: same as in sch_sfq.c + dst: destination IP address + src: source IP address -+ fwmark: netfilter mark value -+ dst_direct: -+ src_direct: -+ fwmark_direct: direct hashing of the above sources ++ fwmark: netfilter mark value + ctorigdst: original destination IP address + ctorigsrc: original source IP address + ctrepldst: reply destination IP address -+ ctreplsrc: reply source IP -+ ++ ctreplsrc: reply source IP ++ +*/ + ++#define ESFQ_HEAD 0 ++#define ESFQ_TAIL 1 + +/* This type should contain at least SFQ_DEPTH*2 values */ +typedef unsigned int esfq_index; @@ -198,9 +198,6 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + unsigned short *hash; /* Hash value indexed by slots */ + struct sk_buff_head *qs; /* Slot queue */ + struct esfq_head *dep; /* Linked list of slots, indexed by depth */ -+ unsigned dyn_min; /* For dynamic divisor adjustment; minimum value seen */ -+ unsigned dyn_max; /* maximum value seen */ -+ unsigned dyn_range; /* saved range */ +}; + +/* This contains the info we will hash. */ @@ -216,31 +213,6 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + u32 mark; /* netfilter mark (fwmark) */ +}; + -+/* Hash input values directly into the "nearest" slot, taking into account the -+ * range of input values seen. This is most useful when the hash table is at -+ * least as large as the range of possible values. -+ * Note: this functionality was added before the change to using jhash, and may -+ * no longer be useful. */ -+static __inline__ unsigned esfq_hash_direct(struct esfq_sched_data *q, u32 h) -+{ -+ /* adjust minimum and maximum */ -+ if (h < q->dyn_min || h > q->dyn_max) { -+ q->dyn_min = h < q->dyn_min ? h : q->dyn_min; -+ q->dyn_max = h > q->dyn_max ? h : q->dyn_max; -+ -+ /* find new range */ -+ if ((q->dyn_range = q->dyn_max - q->dyn_min) >= q->hash_divisor) -+ printk(KERN_WARNING "ESFQ: (direct hash) Input range %u is larger than hash " -+ "table. See ESFQ README for details.\n", q->dyn_range); -+ } -+ -+ /* hash input values into slot numbers */ -+ if (q->dyn_min == q->dyn_max) -+ return 0; /* only one value seen; avoid division by 0 */ -+ else -+ return (h - q->dyn_min) * (q->hash_divisor - 1) / q->dyn_range; -+} -+ +static __inline__ unsigned esfq_jhash_1word(struct esfq_sched_data *q,u32 a) +{ + return jhash_1word(a, q->perturbation) & (q->hash_divisor-1); @@ -256,19 +228,18 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + return jhash_3words(a, b, c, q->perturbation) & (q->hash_divisor-1); +} + -+ +static unsigned esfq_hash(struct esfq_sched_data *q, struct sk_buff *skb) +{ + struct esfq_packet_info info; -+#ifdef CONFIG_NF_CONNTRACK_ENABLED ++#ifdef CONFIG_NET_SCH_ESFQ_NFCT + enum ip_conntrack_info ctinfo; + struct nf_conn *ct = nf_ct_get(skb, &ctinfo); +#endif -+ ++ + switch (skb->protocol) { + case __constant_htons(ETH_P_IP): + { -+ struct iphdr *iph = ip_hdr(skb); ++ struct iphdr *iph = skb->nh.iph; + info.dst = iph->daddr; + info.src = iph->saddr; + if (!(iph->frag_off&htons(IP_MF|IP_OFFSET)) && @@ -284,7 +255,7 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + } + case __constant_htons(ETH_P_IPV6): + { -+ struct ipv6hdr *iph = ipv6_hdr(skb); ++ struct ipv6hdr *iph = skb->nh.ipv6h; + /* Hash ipv6 addresses into a u32. This isn't ideal, + * but the code is simple. */ + info.dst = jhash2(iph->daddr.s6_addr32, 4, q->perturbation); @@ -307,7 +278,7 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + + info.mark = skb->mark; + -+#ifdef CONFIG_NF_CONNTRACK_ENABLED ++#ifdef CONFIG_NET_SCH_ESFQ_NFCT + /* defaults if there is no conntrack info */ + info.ctorigsrc = info.src; + info.ctorigdst = info.dst; @@ -332,23 +303,16 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + } +#endif + -+ switch(q->hash_kind) -+ { ++ switch(q->hash_kind) { + case TCA_SFQ_HASH_CLASSIC: + return esfq_jhash_3words(q, info.dst, info.src, info.proto); + case TCA_SFQ_HASH_DST: + return esfq_jhash_1word(q, info.dst); -+ case TCA_SFQ_HASH_DSTDIR: -+ return esfq_hash_direct(q, ntohl(info.dst)); + case TCA_SFQ_HASH_SRC: + return esfq_jhash_1word(q, info.src); -+ case TCA_SFQ_HASH_SRCDIR: -+ return esfq_hash_direct(q, ntohl(info.src)); + case TCA_SFQ_HASH_FWMARK: + return esfq_jhash_1word(q, info.mark); -+ case TCA_SFQ_HASH_FWMARKDIR: -+ return esfq_hash_direct(q, info.mark); -+#ifdef CONFIG_NF_CONNTRACK_ENABLED ++#ifdef CONFIG_NET_SCH_ESFQ_NFCT + case TCA_SFQ_HASH_CTORIGDST: + return esfq_jhash_1word(q, info.ctorigdst); + case TCA_SFQ_HASH_CTORIGSRC: @@ -357,6 +321,12 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + return esfq_jhash_1word(q, info.ctrepldst); + case TCA_SFQ_HASH_CTREPLSRC: + return esfq_jhash_1word(q, info.ctreplsrc); ++ case TCA_SFQ_HASH_CTNATCHG: ++ { ++ if (info.ctorigdst == info.ctreplsrc) ++ return esfq_jhash_1word(q, info.ctorigsrc); ++ return esfq_jhash_1word(q, info.ctreplsrc); ++ } +#endif + default: + if (net_ratelimit()) @@ -451,10 +421,8 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + return 0; +} + -+static int -+esfq_enqueue(struct sk_buff *skb, struct Qdisc* sch) ++static void esfq_q_enqueue(struct sk_buff *skb, struct esfq_sched_data *q, unsigned int end) +{ -+ struct esfq_sched_data *q = qdisc_priv(sch); + unsigned hash = esfq_hash(q, skb); + unsigned depth = q->depth; + esfq_index x; @@ -464,8 +432,12 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + q->ht[hash] = x = q->dep[depth].next; + q->hash[x] = hash; + } -+ sch->qstats.backlog += skb->len; -+ __skb_queue_tail(&q->qs[x], skb); ++ ++ if (end == ESFQ_TAIL) ++ __skb_queue_tail(&q->qs[x], skb); ++ else ++ __skb_queue_head(&q->qs[x], skb); ++ + esfq_inc(q, x); + if (q->qs[x].qlen == 1) { /* The flow is new */ + if (q->tail == depth) { /* It is the first flow */ @@ -478,43 +450,30 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + q->tail = x; + } + } ++} ++ ++static int esfq_enqueue(struct sk_buff *skb, struct Qdisc* sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ esfq_q_enqueue(skb, q, ESFQ_TAIL); ++ sch->qstats.backlog += skb->len; + if (++sch->q.qlen < q->limit-1) { + sch->bstats.bytes += skb->len; + sch->bstats.packets++; + return 0; + } + ++ sch->qstats.drops++; + esfq_drop(sch); + return NET_XMIT_CN; +} + -+static int -+esfq_requeue(struct sk_buff *skb, struct Qdisc* sch) ++ ++static int esfq_requeue(struct sk_buff *skb, struct Qdisc* sch) +{ + struct esfq_sched_data *q = qdisc_priv(sch); -+ unsigned hash = esfq_hash(q, skb); -+ unsigned depth = q->depth; -+ esfq_index x; -+ -+ x = q->ht[hash]; -+ if (x == depth) { -+ q->ht[hash] = x = q->dep[depth].next; -+ q->hash[x] = hash; -+ } ++ esfq_q_enqueue(skb, q, ESFQ_HEAD); + sch->qstats.backlog += skb->len; -+ __skb_queue_head(&q->qs[x], skb); -+ esfq_inc(q, x); -+ if (q->qs[x].qlen == 1) { /* The flow is new */ -+ if (q->tail == depth) { /* It is the first flow */ -+ q->tail = x; -+ q->next[x] = x; -+ q->allot[x] = q->quantum; -+ } else { -+ q->next[x] = q->next[q->tail]; -+ q->next[q->tail] = x; -+ q->tail = x; -+ } -+ } + if (++sch->q.qlen < q->limit - 1) { + sch->qstats.requeues++; + return 0; @@ -525,13 +484,8 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + return NET_XMIT_CN; +} + -+ -+ -+ -+static struct sk_buff * -+esfq_dequeue(struct Qdisc* sch) ++static struct sk_buff *esfq_q_dequeue(struct esfq_sched_data *q) +{ -+ struct esfq_sched_data *q = qdisc_priv(sch); + struct sk_buff *skb; + unsigned depth = q->depth; + esfq_index a, old_a; @@ -539,15 +493,13 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + /* No active slots */ + if (q->tail == depth) + return NULL; -+ ++ + a = old_a = q->next[q->tail]; -+ ++ + /* Grab packet */ + skb = __skb_dequeue(&q->qs[a]); + esfq_dec(q, a); -+ sch->q.qlen--; -+ sch->qstats.backlog -= skb->len; -+ ++ + /* Is the slot empty? */ + if (q->qs[a].qlen == 0) { + q->ht[q->hash[a]] = depth; @@ -563,12 +515,48 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + a = q->next[a]; + q->allot[a] += q->quantum; + } ++ ++ return skb; ++} ++ ++static struct sk_buff *esfq_dequeue(struct Qdisc* sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ struct sk_buff *skb; + ++ skb = esfq_q_dequeue(q); ++ if (skb == NULL) ++ return NULL; ++ sch->q.qlen--; ++ sch->qstats.backlog -= skb->len; + return skb; +} + -+static void -+esfq_reset(struct Qdisc* sch) ++static void esfq_q_destroy(struct esfq_sched_data *q) ++{ ++ del_timer(&q->perturb_timer); ++ if(q->ht) ++ kfree(q->ht); ++ if(q->dep) ++ kfree(q->dep); ++ if(q->next) ++ kfree(q->next); ++ if(q->allot) ++ kfree(q->allot); ++ if(q->hash) ++ kfree(q->hash); ++ if(q->qs) ++ kfree(q->qs); ++} ++ ++static void esfq_destroy(struct Qdisc *sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ esfq_q_destroy(q); ++} ++ ++ ++static void esfq_reset(struct Qdisc* sch) +{ + struct sk_buff *skb; + @@ -589,104 +577,80 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + } +} + -+static int esfq_change(struct Qdisc *sch, struct rtattr *opt) ++static unsigned int esfq_check_hash(unsigned int kind) +{ -+ struct esfq_sched_data *q = qdisc_priv(sch); -+ struct tc_esfq_qopt *ctl = RTA_DATA(opt); -+ int old_perturb = q->perturb_period; -+ -+ if (opt->rta_len < RTA_LENGTH(sizeof(*ctl))) -+ return -EINVAL; -+ -+ sch_tree_lock(sch); -+ q->quantum = ctl->quantum ? : psched_mtu(sch->dev); -+ q->perturb_period = ctl->perturb_period*HZ; -+// q->hash_divisor = ctl->divisor; -+// q->tail = q->limit = q->depth = ctl->flows; -+ -+ if (ctl->limit) -+ q->limit = min_t(u32, ctl->limit, q->depth); -+ -+ if (ctl->hash_kind) { -+ q->hash_kind = ctl->hash_kind; -+ if (q->hash_kind != TCA_SFQ_HASH_CLASSIC) -+ q->perturb_period = 0; ++ switch (kind) { ++ case TCA_SFQ_HASH_CTORIGDST: ++ case TCA_SFQ_HASH_CTORIGSRC: ++ case TCA_SFQ_HASH_CTREPLDST: ++ case TCA_SFQ_HASH_CTREPLSRC: ++ case TCA_SFQ_HASH_CTNATCHG: ++#ifndef CONFIG_NET_SCH_ESFQ_NFCT ++ { ++ if (net_ratelimit()) ++ printk(KERN_WARNING "ESFQ: Conntrack hash types disabled in kernel config. Falling back to classic.\n"); ++ return TCA_SFQ_HASH_CLASSIC; ++ } ++#endif ++ case TCA_SFQ_HASH_CLASSIC: ++ case TCA_SFQ_HASH_DST: ++ case TCA_SFQ_HASH_SRC: ++ case TCA_SFQ_HASH_FWMARK: ++ return kind; ++ default: ++ { ++ if (net_ratelimit()) ++ printk(KERN_WARNING "ESFQ: Unknown hash type. Falling back to classic.\n"); ++ return TCA_SFQ_HASH_CLASSIC; + } -+ -+ // is sch_tree_lock enough to do this ? -+ while (sch->q.qlen >= q->limit-1) -+ esfq_drop(sch); -+ -+ if (old_perturb) -+ del_timer(&q->perturb_timer); -+ if (q->perturb_period) { -+ q->perturb_timer.expires = jiffies + q->perturb_period; -+ add_timer(&q->perturb_timer); -+ } else { -+ q->perturbation = 0; + } -+ sch_tree_unlock(sch); -+ return 0; +} -+ -+static int esfq_init(struct Qdisc *sch, struct rtattr *opt) ++ ++static int esfq_q_init(struct esfq_sched_data *q, struct rtattr *opt) +{ -+ struct esfq_sched_data *q = qdisc_priv(sch); -+ struct tc_esfq_qopt *ctl; ++ struct tc_esfq_qopt *ctl = RTA_DATA(opt); + esfq_index p = ~0U/2; + int i; -+ ++ + if (opt && opt->rta_len < RTA_LENGTH(sizeof(*ctl))) + return -EINVAL; + -+ init_timer(&q->perturb_timer); -+ q->perturb_timer.data = (unsigned long)sch; -+ q->perturb_timer.function = esfq_perturbation; + q->perturbation = 0; + q->hash_kind = TCA_SFQ_HASH_CLASSIC; + q->max_depth = 0; -+ q->dyn_min = ~0U; /* maximum value for this type */ -+ q->dyn_max = 0; /* dyn_min/dyn_max will be set properly upon first packet */ + if (opt == NULL) { -+ q->quantum = psched_mtu(sch->dev); + q->perturb_period = 0; + q->hash_divisor = 1024; + q->tail = q->limit = q->depth = 128; -+ ++ + } else { -+ ctl = RTA_DATA(opt); -+ q->quantum = ctl->quantum ? : psched_mtu(sch->dev); ++ struct tc_esfq_qopt *ctl = RTA_DATA(opt); ++ if (ctl->quantum) ++ q->quantum = ctl->quantum; + q->perturb_period = ctl->perturb_period*HZ; + q->hash_divisor = ctl->divisor ? : 1024; + q->tail = q->limit = q->depth = ctl->flows ? : 128; -+ ++ + if ( q->depth > p - 1 ) + return -EINVAL; -+ ++ + if (ctl->limit) + q->limit = min_t(u32, ctl->limit, q->depth); -+ ++ + if (ctl->hash_kind) { -+ q->hash_kind = ctl->hash_kind; -+ } -+ -+ if (q->perturb_period) { -+ q->perturb_timer.expires = jiffies + q->perturb_period; -+ add_timer(&q->perturb_timer); ++ q->hash_kind = esfq_check_hash(ctl->hash_kind); + } + } -+ ++ + q->ht = kmalloc(q->hash_divisor*sizeof(esfq_index), GFP_KERNEL); + if (!q->ht) + goto err_case; -+ + q->dep = kmalloc((1+q->depth*2)*sizeof(struct esfq_head), GFP_KERNEL); + if (!q->dep) + goto err_case; + q->next = kmalloc(q->depth*sizeof(esfq_index), GFP_KERNEL); + if (!q->next) + goto err_case; -+ + q->allot = kmalloc(q->depth*sizeof(short), GFP_KERNEL); + if (!q->allot) + goto err_case; @@ -696,7 +660,7 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + q->qs = kmalloc(q->depth*sizeof(struct sk_buff_head), GFP_KERNEL); + if (!q->qs) + goto err_case; -+ ++ + for (i=0; i< q->hash_divisor; i++) + q->ht[i] = q->depth; + for (i=0; i<q->depth; i++) { @@ -704,49 +668,87 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + q->dep[i+q->depth].next = i+q->depth; + q->dep[i+q->depth].prev = i+q->depth; + } -+ ++ + for (i=0; i<q->depth; i++) + esfq_link(q, i); + return 0; +err_case: -+ del_timer(&q->perturb_timer); -+ if (q->ht) -+ kfree(q->ht); -+ if (q->dep) -+ kfree(q->dep); -+ if (q->next) -+ kfree(q->next); -+ if (q->allot) -+ kfree(q->allot); -+ if (q->hash) -+ kfree(q->hash); -+ if (q->qs) -+ kfree(q->qs); ++ esfq_q_destroy(q); + return -ENOBUFS; +} + -+static void esfq_destroy(struct Qdisc *sch) ++static int esfq_init(struct Qdisc *sch, struct rtattr *opt) +{ + struct esfq_sched_data *q = qdisc_priv(sch); -+ del_timer(&q->perturb_timer); -+ if(q->ht) -+ kfree(q->ht); -+ if(q->dep) -+ kfree(q->dep); -+ if(q->next) -+ kfree(q->next); -+ if(q->allot) -+ kfree(q->allot); -+ if(q->hash) -+ kfree(q->hash); -+ if(q->qs) -+ kfree(q->qs); ++ int err; ++ ++ q->quantum = psched_mtu(sch->dev); /* default */ ++ if ((err = esfq_q_init(q, opt))) ++ return err; ++ ++ init_timer(&q->perturb_timer); ++ q->perturb_timer.data = (unsigned long)sch; ++ q->perturb_timer.function = esfq_perturbation; ++ if (q->perturb_period) { ++ q->perturb_timer.expires = jiffies + q->perturb_period; ++ add_timer(&q->perturb_timer); ++ } ++ ++ return 0; ++} ++ ++static int esfq_change(struct Qdisc *sch, struct rtattr *opt) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ struct esfq_sched_data new; ++ struct sk_buff *skb; ++ int err; ++ ++ /* set up new queue */ ++ memset(&new, 0, sizeof(struct esfq_sched_data)); ++ new.quantum = psched_mtu(sch->dev); /* default */ ++ if ((err = esfq_q_init(&new, opt))) ++ return err; ++ ++ /* copy all packets from the old queue to the new queue */ ++ sch_tree_lock(sch); ++ while ((skb = esfq_q_dequeue(q)) != NULL) ++ esfq_q_enqueue(skb, &new, ESFQ_TAIL); ++ ++ /* clean up the old queue */ ++ esfq_q_destroy(q); ++ ++ /* copy elements of the new queue into the old queue */ ++ q->perturb_period = new.perturb_period; ++ q->quantum = new.quantum; ++ q->limit = new.limit; ++ q->depth = new.depth; ++ q->hash_divisor = new.hash_divisor; ++ q->hash_kind = new.hash_kind; ++ q->tail = new.tail; ++ q->max_depth = new.max_depth; ++ q->ht = new.ht; ++ q->dep = new.dep; ++ q->next = new.next; ++ q->allot = new.allot; ++ q->hash = new.hash; ++ q->qs = new.qs; ++ ++ /* finish up */ ++ if (q->perturb_period) { ++ q->perturb_timer.expires = jiffies + q->perturb_period; ++ add_timer(&q->perturb_timer); ++ } else { ++ q->perturbation = 0; ++ } ++ sch_tree_unlock(sch); ++ return 0; +} + +static int esfq_dump(struct Qdisc *sch, struct sk_buff *skb) +{ + struct esfq_sched_data *q = qdisc_priv(sch); -+ unsigned char *b = skb->tail; ++ unsigned char *b = skb->tail; + struct tc_esfq_qopt opt; + + opt.quantum = q->quantum; @@ -779,7 +781,7 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c + .init = esfq_init, + .reset = esfq_reset, + .destroy = esfq_destroy, -+ .change = NULL, /* esfq_change - needs more work */ ++ .change = esfq_change, + .dump = esfq_dump, + .owner = THIS_MODULE, +}; @@ -788,7 +790,7 @@ Index: linux-2.6.23-rc6/net/sched/sch_esfq.c +{ + return register_qdisc(&esfq_qdisc_ops); +} -+static void __exit esfq_module_exit(void) ++static void __exit esfq_module_exit(void) +{ + unregister_qdisc(&esfq_qdisc_ops); +} |