@@ -26,8 +26,7 @@ define KernelPackage/sched-cake-oot
URL:=https://github.com/dtaht/sch_cake
FILES:=$(PKG_BUILD_DIR)/sch_cake.ko
AUTOLOAD:=$(call AutoLoad,75,sch_cake)
- DEPENDS:=+kmod-sched-core
- PROVIDES:=kmod-sched-cake
+ DEPENDS:=@LINUX_4_14 +kmod-sched-core
endef
include $(INCLUDE_DIR)/kernel-defaults.mk
@@ -746,7 +746,7 @@ $(eval $(call KernelPackage,mppe))
SCHED_MODULES = $(patsubst $(LINUX_DIR)/net/sched/%.ko,%,$(wildcard $(LINUX_DIR)/net/sched/*.ko))
SCHED_MODULES_CORE = sch_ingress sch_fq_codel sch_hfsc sch_htb sch_tbf cls_basic cls_fw cls_route cls_flow cls_tcindex cls_u32 em_u32 act_mirred act_skbedit cls_matchall
-SCHED_MODULES_FILTER = $(SCHED_MODULES_CORE) act_connmark act_ctinfo sch_netem sch_mqprio em_ipset cls_bpf cls_flower act_bpf act_vlan
+SCHED_MODULES_FILTER = $(SCHED_MODULES_CORE) act_connmark act_ctinfo sch_cake sch_netem sch_mqprio em_ipset cls_bpf cls_flower act_bpf act_vlan
SCHED_MODULES_EXTRA = $(filter-out $(SCHED_MODULES_FILTER),$(SCHED_MODULES))
SCHED_FILES = $(patsubst %,$(LINUX_DIR)/net/sched/%.ko,$(filter $(SCHED_MODULES_CORE),$(SCHED_MODULES)))
SCHED_FILES_EXTRA = $(patsubst %,$(LINUX_DIR)/net/sched/%.ko,$(SCHED_MODULES_EXTRA))
@@ -785,6 +785,21 @@ endef
$(eval $(call KernelPackage,sched-core))
+define KernelPackage/sched-cake
+ SUBMENU:=$(NETWORK_SUPPORT_MENU)
+ TITLE:=Cake fq_codel/blue derived shaper
+ DEPENDS:=@!LINUX_4_14 +kmod-sched-core
+ KCONFIG:=CONFIG_NET_SCH_CAKE
+ FILES:=$(LINUX_DIR)/net/sched/sch_cake.ko
+ AUTOLOAD:=$(call AutoProbe,sch_cake)
+endef
+
+define KernelPackage/sched-cake/description
+ Common Applications Kept Enhanced fq_codel/blue derived shaper
+endef
+
+$(eval $(call KernelPackage,sched-cake))
+
define KernelPackage/sched-flower
SUBMENU:=$(NETWORK_SUPPORT_MENU)
TITLE:=Flower traffic classifier
new file mode 100644
@@ -0,0 +1,217 @@
+From 712639929912c5eefb09facccb48d55b3f72c9f8 Mon Sep 17 00:00:00 2001
+From: George Amanakis <gamanakis@gmail.com>
+Date: Fri, 1 Mar 2019 16:04:05 +0100
+Subject: [PATCH] sch_cake: Make the dual modes fairer
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+CAKE host fairness does not work well with TCP flows in dual-srchost and
+dual-dsthost setup. The reason is that ACKs generated by TCP flows are
+classified as sparse flows, and affect flow isolation from other hosts. Fix
+this by calculating host_load based only on the bulk flows a host
+generates. In a hash collision the host_bulk_flow_count values must be
+decremented on the old hosts and incremented on the new ones *if* the queue
+is in the bulk set.
+
+Reported-by: Pete Heist <peteheist@gmail.com>
+Signed-off-by: George Amanakis <gamanakis@gmail.com>
+Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+---
+ net/sched/sch_cake.c | 92 ++++++++++++++++++++++++++++++--------------
+ 1 file changed, 63 insertions(+), 29 deletions(-)
+
+--- a/net/sched/sch_cake.c
++++ b/net/sched/sch_cake.c
+@@ -138,8 +138,8 @@ struct cake_flow {
+ struct cake_host {
+ u32 srchost_tag;
+ u32 dsthost_tag;
+- u16 srchost_refcnt;
+- u16 dsthost_refcnt;
++ u16 srchost_bulk_flow_count;
++ u16 dsthost_bulk_flow_count;
+ };
+
+ struct cake_heap_entry {
+@@ -746,8 +746,10 @@ skip_hash:
+ * queue, accept the collision, update the host tags.
+ */
+ q->way_collisions++;
+- q->hosts[q->flows[reduced_hash].srchost].srchost_refcnt--;
+- q->hosts[q->flows[reduced_hash].dsthost].dsthost_refcnt--;
++ if (q->flows[outer_hash + k].set == CAKE_SET_BULK) {
++ q->hosts[q->flows[reduced_hash].srchost].srchost_bulk_flow_count--;
++ q->hosts[q->flows[reduced_hash].dsthost].dsthost_bulk_flow_count--;
++ }
+ allocate_src = cake_dsrc(flow_mode);
+ allocate_dst = cake_ddst(flow_mode);
+ found:
+@@ -767,13 +769,14 @@ found:
+ }
+ for (i = 0; i < CAKE_SET_WAYS;
+ i++, k = (k + 1) % CAKE_SET_WAYS) {
+- if (!q->hosts[outer_hash + k].srchost_refcnt)
++ if (!q->hosts[outer_hash + k].srchost_bulk_flow_count)
+ break;
+ }
+ q->hosts[outer_hash + k].srchost_tag = srchost_hash;
+ found_src:
+ srchost_idx = outer_hash + k;
+- q->hosts[srchost_idx].srchost_refcnt++;
++ if (q->flows[reduced_hash].set == CAKE_SET_BULK)
++ q->hosts[srchost_idx].srchost_bulk_flow_count++;
+ q->flows[reduced_hash].srchost = srchost_idx;
+ }
+
+@@ -789,13 +792,14 @@ found_src:
+ }
+ for (i = 0; i < CAKE_SET_WAYS;
+ i++, k = (k + 1) % CAKE_SET_WAYS) {
+- if (!q->hosts[outer_hash + k].dsthost_refcnt)
++ if (!q->hosts[outer_hash + k].dsthost_bulk_flow_count)
+ break;
+ }
+ q->hosts[outer_hash + k].dsthost_tag = dsthost_hash;
+ found_dst:
+ dsthost_idx = outer_hash + k;
+- q->hosts[dsthost_idx].dsthost_refcnt++;
++ if (q->flows[reduced_hash].set == CAKE_SET_BULK)
++ q->hosts[dsthost_idx].dsthost_bulk_flow_count++;
+ q->flows[reduced_hash].dsthost = dsthost_idx;
+ }
+ }
+@@ -1793,20 +1797,30 @@ static s32 cake_enqueue(struct sk_buff *
+ b->sparse_flow_count++;
+
+ if (cake_dsrc(q->flow_mode))
+- host_load = max(host_load, srchost->srchost_refcnt);
++ host_load = max(host_load, srchost->srchost_bulk_flow_count);
+
+ if (cake_ddst(q->flow_mode))
+- host_load = max(host_load, dsthost->dsthost_refcnt);
++ host_load = max(host_load, dsthost->dsthost_bulk_flow_count);
+
+ flow->deficit = (b->flow_quantum *
+ quantum_div[host_load]) >> 16;
+ } else if (flow->set == CAKE_SET_SPARSE_WAIT) {
++ struct cake_host *srchost = &b->hosts[flow->srchost];
++ struct cake_host *dsthost = &b->hosts[flow->dsthost];
++
+ /* this flow was empty, accounted as a sparse flow, but actually
+ * in the bulk rotation.
+ */
+ flow->set = CAKE_SET_BULK;
+ b->sparse_flow_count--;
+ b->bulk_flow_count++;
++
++ if (cake_dsrc(q->flow_mode))
++ srchost->srchost_bulk_flow_count++;
++
++ if (cake_ddst(q->flow_mode))
++ dsthost->dsthost_bulk_flow_count++;
++
+ }
+
+ if (q->buffer_used > q->buffer_max_used)
+@@ -1974,23 +1988,8 @@ retry:
+ dsthost = &b->hosts[flow->dsthost];
+ host_load = 1;
+
+- if (cake_dsrc(q->flow_mode))
+- host_load = max(host_load, srchost->srchost_refcnt);
+-
+- if (cake_ddst(q->flow_mode))
+- host_load = max(host_load, dsthost->dsthost_refcnt);
+-
+- WARN_ON(host_load > CAKE_QUEUES);
+-
+ /* flow isolation (DRR++) */
+ if (flow->deficit <= 0) {
+- /* The shifted prandom_u32() is a way to apply dithering to
+- * avoid accumulating roundoff errors
+- */
+- flow->deficit += (b->flow_quantum * quantum_div[host_load] +
+- (prandom_u32() >> 16)) >> 16;
+- list_move_tail(&flow->flowchain, &b->old_flows);
+-
+ /* Keep all flows with deficits out of the sparse and decaying
+ * rotations. No non-empty flow can go into the decaying
+ * rotation, so they can't get deficits
+@@ -1999,6 +1998,13 @@ retry:
+ if (flow->head) {
+ b->sparse_flow_count--;
+ b->bulk_flow_count++;
++
++ if (cake_dsrc(q->flow_mode))
++ srchost->srchost_bulk_flow_count++;
++
++ if (cake_ddst(q->flow_mode))
++ dsthost->dsthost_bulk_flow_count++;
++
+ flow->set = CAKE_SET_BULK;
+ } else {
+ /* we've moved it to the bulk rotation for
+@@ -2008,6 +2014,22 @@ retry:
+ flow->set = CAKE_SET_SPARSE_WAIT;
+ }
+ }
++
++ if (cake_dsrc(q->flow_mode))
++ host_load = max(host_load, srchost->srchost_bulk_flow_count);
++
++ if (cake_ddst(q->flow_mode))
++ host_load = max(host_load, dsthost->dsthost_bulk_flow_count);
++
++ WARN_ON(host_load > CAKE_QUEUES);
++
++ /* The shifted prandom_u32() is a way to apply dithering to
++ * avoid accumulating roundoff errors
++ */
++ flow->deficit += (b->flow_quantum * quantum_div[host_load] +
++ (prandom_u32() >> 16)) >> 16;
++ list_move_tail(&flow->flowchain, &b->old_flows);
++
+ goto retry;
+ }
+
+@@ -2028,6 +2050,13 @@ retry:
+ &b->decaying_flows);
+ if (flow->set == CAKE_SET_BULK) {
+ b->bulk_flow_count--;
++
++ if (cake_dsrc(q->flow_mode))
++ srchost->srchost_bulk_flow_count--;
++
++ if (cake_ddst(q->flow_mode))
++ dsthost->dsthost_bulk_flow_count--;
++
+ b->decaying_flow_count++;
+ } else if (flow->set == CAKE_SET_SPARSE ||
+ flow->set == CAKE_SET_SPARSE_WAIT) {
+@@ -2041,14 +2070,19 @@ retry:
+ if (flow->set == CAKE_SET_SPARSE ||
+ flow->set == CAKE_SET_SPARSE_WAIT)
+ b->sparse_flow_count--;
+- else if (flow->set == CAKE_SET_BULK)
++ else if (flow->set == CAKE_SET_BULK) {
+ b->bulk_flow_count--;
+- else
++
++ if (cake_dsrc(q->flow_mode))
++ srchost->srchost_bulk_flow_count--;
++
++ if (cake_ddst(q->flow_mode))
++ dsthost->dsthost_bulk_flow_count--;
++
++ } else
+ b->decaying_flow_count--;
+
+ flow->set = CAKE_SET_NONE;
+- srchost->srchost_refcnt--;
+- dsthost->dsthost_refcnt--;
+ }
+ goto begin;
+ }
new file mode 100644
@@ -0,0 +1,118 @@
+From 0b5c7efdfc6e389ec6840579fe90bdb6f42b08dc Mon Sep 17 00:00:00 2001
+From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+Date: Fri, 1 Mar 2019 16:04:05 +0100
+Subject: [PATCH] sch_cake: Permit use of connmarks as tin classifiers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add flag 'FWMARK' to enable use of firewall connmarks as tin selector.
+The connmark (skbuff->mark) needs to be in the range 1->tin_cnt ie.
+for diffserv3 the mark needs to be 1->3.
+
+Background
+
+Typically CAKE uses DSCP as the basis for tin selection. DSCP values
+are relatively easily changed as part of the egress path, usually with
+iptables & the mangle table, ingress is more challenging. CAKE is often
+used on the WAN interface of a residential gateway where passthrough of
+DSCP from the ISP is either missing or set to unhelpful values thus use
+of ingress DSCP values for tin selection isn't helpful in that
+environment.
+
+An approach to solving the ingress tin selection problem is to use
+CAKE's understanding of tc filters. Naive tc filters could match on
+source/destination port numbers and force tin selection that way, but
+multiple filters don't scale particularly well as each filter must be
+traversed whether it matches or not. e.g. a simple example to map 3
+firewall marks to tins:
+
+MAJOR=$( tc qdisc show dev $DEV | head -1 | awk '{print $3}' )
+tc filter add dev $DEV parent $MAJOR protocol all handle 0x01 fw action skbedit priority ${MAJOR}1
+tc filter add dev $DEV parent $MAJOR protocol all handle 0x02 fw action skbedit priority ${MAJOR}2
+tc filter add dev $DEV parent $MAJOR protocol all handle 0x03 fw action skbedit priority ${MAJOR}3
+
+Another option is to use eBPF cls_act with tc filters e.g.
+
+MAJOR=$( tc qdisc show dev $DEV | head -1 | awk '{print $3}' )
+tc filter add dev $DEV parent $MAJOR bpf da obj my-bpf-fwmark-to-class.o
+
+This has the disadvantages of a) needing someone to write & maintain
+the bpf program, b) a bpf toolchain to compile it and c) needing to
+hardcode the major number in the bpf program so it matches the cake
+instance (or forcing the cake instance to a particular major number)
+since the major number cannot be passed to the bpf program via tc
+command line.
+
+As already hinted at by the previous examples, it would be helpful
+to associate tins with something that survives the Internet path and
+ideally allows tin selection on both egress and ingress. Netfilter's
+conntrack permits setting an identifying mark on a connection which
+can also be restored to an ingress packet with tc action connmark e.g.
+
+tc filter add dev eth0 parent ffff: protocol all prio 10 u32 \
+ match u32 0 0 flowid 1:1 action connmark action mirred egress redirect dev ifb1
+
+Since tc's connmark action has restored any connmark into skb->mark,
+any of the previous solutions are based upon it and in one form or
+another copy that mark to the skb->priority field where again CAKE
+picks this up.
+
+This change cuts out at least one of the (less intuitive &
+non-scalable) middlemen and permit direct access to skb->mark.
+
+Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ include/uapi/linux/pkt_sched.h | 1 +
+ net/sched/sch_cake.c | 34 +++++++++++++++++++++++++++-------
+ 2 files changed, 28 insertions(+), 7 deletions(-)
+
+--- a/include/uapi/linux/pkt_sched.h
++++ b/include/uapi/linux/pkt_sched.h
+@@ -991,6 +991,7 @@ enum {
+ TCA_CAKE_INGRESS,
+ TCA_CAKE_ACK_FILTER,
+ TCA_CAKE_SPLIT_GSO,
++ TCA_CAKE_FWMARK,
+ __TCA_CAKE_MAX
+ };
+ #define TCA_CAKE_MAX (__TCA_CAKE_MAX - 1)
+--- a/net/sched/sch_cake.c
++++ b/net/sched/sch_cake.c
+@@ -258,7 +258,8 @@ enum {
+ CAKE_FLAG_AUTORATE_INGRESS = BIT(1),
+ CAKE_FLAG_INGRESS = BIT(2),
+ CAKE_FLAG_WASH = BIT(3),
+- CAKE_FLAG_SPLIT_GSO = BIT(4)
++ CAKE_FLAG_SPLIT_GSO = BIT(4),
++ CAKE_FLAG_FWMARK = BIT(5)
+ };
+
+ /* COBALT operates the Codel and BLUE algorithms in parallel, in order to
+@@ -2623,6 +2624,13 @@ static int cake_change(struct Qdisc *sch
+ q->rate_flags &= ~CAKE_FLAG_SPLIT_GSO;
+ }
+
++ if (tb[TCA_CAKE_FWMARK]) {
++ if (!!nla_get_u32(tb[TCA_CAKE_FWMARK]))
++ q->rate_flags |= CAKE_FLAG_FWMARK;
++ else
++ q->rate_flags &= ~CAKE_FLAG_FWMARK;
++ }
++
+ if (q->tins) {
+ sch_tree_lock(sch);
+ cake_reconfigure(sch);
+@@ -2782,6 +2790,10 @@ static int cake_dump(struct Qdisc *sch,
+ !!(q->rate_flags & CAKE_FLAG_SPLIT_GSO)))
+ goto nla_put_failure;
+
++ if (nla_put_u32(skb, TCA_CAKE_FWMARK,
++ !!(q->rate_flags & CAKE_FLAG_FWMARK)))
++ goto nla_put_failure;
++
+ return nla_nest_end(skb, opts);
+
+ nla_put_failure:
new file mode 100644
@@ -0,0 +1,102 @@
+From eab2fc822af38f31fd5f4e731b5d10b94904d919 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com>
+Date: Thu, 14 Mar 2019 23:08:22 +0100
+Subject: [PATCH] sch_cake: Interpret fwmark parameter as a bitmask
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We initially interpreted the fwmark parameter as a flag that simply turned
+on the feature, using the whole skb->mark field as the index into the CAKE
+tin_order array. However, it is quite common for different applications to
+use different parts of the mask field for their own purposes, each using a
+different mask.
+
+Support this use of subsets of the mark by interpreting the TCA_CAKE_FWMARK
+parameter as a bitmask to apply to the fwmark field when reading it. The
+result will be right-shifted by the number of unset lower bits of the mask
+before looking up the tin.
+
+In the original commit message we also failed to credit Felix Resch with
+originally suggesting the fwmark feature back in 2017; so the Suggested-By
+in this commit covers the whole fwmark feature.
+
+Fixes: 0b5c7efdfc6e ("sch_cake: Permit use of connmarks as tin classifiers")
+Suggested-by: Felix Resch <fuller@beif.de>
+Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+---
+ net/sched/sch_cake.c | 25 ++++++++++++-------------
+ 1 file changed, 12 insertions(+), 13 deletions(-)
+
+--- a/net/sched/sch_cake.c
++++ b/net/sched/sch_cake.c
+@@ -211,6 +211,9 @@ struct cake_sched_data {
+ u8 ack_filter;
+ u8 atm_mode;
+
++ u32 fwmark_mask;
++ u16 fwmark_shft;
++
+ /* time_next = time_this + ((len * rate_ns) >> rate_shft) */
+ u16 rate_shft;
+ ktime_t time_next_packet;
+@@ -258,8 +261,7 @@ enum {
+ CAKE_FLAG_AUTORATE_INGRESS = BIT(1),
+ CAKE_FLAG_INGRESS = BIT(2),
+ CAKE_FLAG_WASH = BIT(3),
+- CAKE_FLAG_SPLIT_GSO = BIT(4),
+- CAKE_FLAG_FWMARK = BIT(5)
++ CAKE_FLAG_SPLIT_GSO = BIT(4)
+ };
+
+ /* COBALT operates the Codel and BLUE algorithms in parallel, in order to
+@@ -1554,7 +1556,7 @@ static struct cake_tin_data *cake_select
+ struct sk_buff *skb)
+ {
+ struct cake_sched_data *q = qdisc_priv(sch);
+- u32 tin;
++ u32 tin, mark;
+ u8 dscp;
+
+ /* Tin selection: Default to diffserv-based selection, allow overriding
+@@ -1562,6 +1564,7 @@ static struct cake_tin_data *cake_select
+ */
+ dscp = cake_handle_diffserv(skb,
+ q->rate_flags & CAKE_FLAG_WASH);
++ mark = (skb->mark & q->fwmark_mask) >> q->fwmark_shft;
+
+ if (q->tin_mode == CAKE_DIFFSERV_BESTEFFORT)
+ tin = 0;
+@@ -2178,6 +2181,7 @@ static const struct nla_policy cake_poli
+ [TCA_CAKE_MPU] = { .type = NLA_U32 },
+ [TCA_CAKE_INGRESS] = { .type = NLA_U32 },
+ [TCA_CAKE_ACK_FILTER] = { .type = NLA_U32 },
++ [TCA_CAKE_FWMARK] = { .type = NLA_U32 },
+ };
+
+ static void cake_set_rate(struct cake_tin_data *b, u64 rate, u32 mtu,
+@@ -2625,10 +2629,8 @@ static int cake_change(struct Qdisc *sch
+ }
+
+ if (tb[TCA_CAKE_FWMARK]) {
+- if (!!nla_get_u32(tb[TCA_CAKE_FWMARK]))
+- q->rate_flags |= CAKE_FLAG_FWMARK;
+- else
+- q->rate_flags &= ~CAKE_FLAG_FWMARK;
++ q->fwmark_mask = nla_get_u32(tb[TCA_CAKE_FWMARK]);
++ q->fwmark_shft = q->fwmark_mask ? __ffs(q->fwmark_mask) : 0;
+ }
+
+ if (q->tins) {
+@@ -2790,8 +2792,7 @@ static int cake_dump(struct Qdisc *sch,
+ !!(q->rate_flags & CAKE_FLAG_SPLIT_GSO)))
+ goto nla_put_failure;
+
+- if (nla_put_u32(skb, TCA_CAKE_FWMARK,
+- !!(q->rate_flags & CAKE_FLAG_FWMARK)))
++ if (nla_put_u32(skb, TCA_CAKE_FWMARK, q->fwmark_mask))
+ goto nla_put_failure;
+
+ return nla_nest_end(skb, opts);
new file mode 100644
@@ -0,0 +1,158 @@
+From d7e1738f0a0b0573ac93cf570ba3df9dee61b68e Mon Sep 17 00:00:00 2001
+From: Kevin 'ldir' Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+Date: Wed, 18 Dec 2019 14:05:13 +0000
+Subject: [PATCH 2/2] sch_cake: drop unused variable tin_quantum_prio
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Turns out tin_quantum_prio isn't used anymore and is a leftover from a
+previous implementation of diffserv tins. Since the variable isn't used
+in any calculations it can be eliminated.
+
+Drop variable and places where it was set. Rename remaining variable
+and consolidate naming of intermediate variables that set it.
+
+Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ net/sched/sch_cake.c | 59 ++++++++++++++------------------------------
+ 1 file changed, 18 insertions(+), 41 deletions(-)
+
+--- a/net/sched/sch_cake.c
++++ b/net/sched/sch_cake.c
+@@ -173,8 +173,7 @@ struct cake_tin_data {
+ u64 tin_rate_bps;
+ u16 tin_rate_shft;
+
+- u16 tin_quantum_prio;
+- u16 tin_quantum_band;
++ u16 tin_quantum;
+ s32 tin_deficit;
+ u32 tin_backlog;
+ u32 tin_dropped;
+@@ -1916,7 +1915,7 @@ begin:
+ while (b->tin_deficit < 0 ||
+ !(b->sparse_flow_count + b->bulk_flow_count)) {
+ if (b->tin_deficit <= 0)
+- b->tin_deficit += b->tin_quantum_band;
++ b->tin_deficit += b->tin_quantum;
+ if (b->sparse_flow_count + b->bulk_flow_count)
+ empty = false;
+
+@@ -2237,8 +2236,7 @@ static int cake_config_besteffort(struct
+
+ cake_set_rate(b, rate, mtu,
+ us_to_ns(q->target), us_to_ns(q->interval));
+- b->tin_quantum_band = 65535;
+- b->tin_quantum_prio = 65535;
++ b->tin_quantum = 65535;
+
+ return 0;
+ }
+@@ -2249,8 +2247,7 @@ static int cake_config_precedence(struct
+ struct cake_sched_data *q = qdisc_priv(sch);
+ u32 mtu = psched_mtu(qdisc_dev(sch));
+ u64 rate = q->rate_bps;
+- u32 quantum1 = 256;
+- u32 quantum2 = 256;
++ u32 quantum = 256;
+ u32 i;
+
+ q->tin_cnt = 8;
+@@ -2263,18 +2260,14 @@ static int cake_config_precedence(struct
+ cake_set_rate(b, rate, mtu, us_to_ns(q->target),
+ us_to_ns(q->interval));
+
+- b->tin_quantum_prio = max_t(u16, 1U, quantum1);
+- b->tin_quantum_band = max_t(u16, 1U, quantum2);
++ b->tin_quantum = max_t(u16, 1U, quantum);
+
+ /* calculate next class's parameters */
+ rate *= 7;
+ rate >>= 3;
+
+- quantum1 *= 3;
+- quantum1 >>= 1;
+-
+- quantum2 *= 7;
+- quantum2 >>= 3;
++ quantum *= 7;
++ quantum >>= 3;
+ }
+
+ return 0;
+@@ -2343,8 +2336,7 @@ static int cake_config_diffserv8(struct
+ struct cake_sched_data *q = qdisc_priv(sch);
+ u32 mtu = psched_mtu(qdisc_dev(sch));
+ u64 rate = q->rate_bps;
+- u32 quantum1 = 256;
+- u32 quantum2 = 256;
++ u32 quantum = 256;
+ u32 i;
+
+ q->tin_cnt = 8;
+@@ -2360,18 +2352,14 @@ static int cake_config_diffserv8(struct
+ cake_set_rate(b, rate, mtu, us_to_ns(q->target),
+ us_to_ns(q->interval));
+
+- b->tin_quantum_prio = max_t(u16, 1U, quantum1);
+- b->tin_quantum_band = max_t(u16, 1U, quantum2);
++ b->tin_quantum = max_t(u16, 1U, quantum);
+
+ /* calculate next class's parameters */
+ rate *= 7;
+ rate >>= 3;
+
+- quantum1 *= 3;
+- quantum1 >>= 1;
+-
+- quantum2 *= 7;
+- quantum2 >>= 3;
++ quantum *= 7;
++ quantum >>= 3;
+ }
+
+ return 0;
+@@ -2410,17 +2398,11 @@ static int cake_config_diffserv4(struct
+ cake_set_rate(&q->tins[3], rate >> 2, mtu,
+ us_to_ns(q->target), us_to_ns(q->interval));
+
+- /* priority weights */
+- q->tins[0].tin_quantum_prio = quantum;
+- q->tins[1].tin_quantum_prio = quantum >> 4;
+- q->tins[2].tin_quantum_prio = quantum << 2;
+- q->tins[3].tin_quantum_prio = quantum << 4;
+-
+ /* bandwidth-sharing weights */
+- q->tins[0].tin_quantum_band = quantum;
+- q->tins[1].tin_quantum_band = quantum >> 4;
+- q->tins[2].tin_quantum_band = quantum >> 1;
+- q->tins[3].tin_quantum_band = quantum >> 2;
++ q->tins[0].tin_quantum = quantum;
++ q->tins[1].tin_quantum = quantum >> 4;
++ q->tins[2].tin_quantum = quantum >> 1;
++ q->tins[3].tin_quantum = quantum >> 2;
+
+ return 0;
+ }
+@@ -2451,15 +2433,10 @@ static int cake_config_diffserv3(struct
+ cake_set_rate(&q->tins[2], rate >> 2, mtu,
+ us_to_ns(q->target), us_to_ns(q->interval));
+
+- /* priority weights */
+- q->tins[0].tin_quantum_prio = quantum;
+- q->tins[1].tin_quantum_prio = quantum >> 4;
+- q->tins[2].tin_quantum_prio = quantum << 4;
+-
+ /* bandwidth-sharing weights */
+- q->tins[0].tin_quantum_band = quantum;
+- q->tins[1].tin_quantum_band = quantum >> 4;
+- q->tins[2].tin_quantum_band = quantum >> 2;
++ q->tins[0].tin_quantum = quantum;
++ q->tins[1].tin_quantum = quantum >> 4;
++ q->tins[2].tin_quantum = quantum >> 2;
+
+ return 0;
+ }
new file mode 100644
@@ -0,0 +1,30 @@
+From b3c424eb6a1a3c485de64619418a471dee6ce849 Mon Sep 17 00:00:00 2001
+From: Victorien Molle <victorien.molle@wifirst.fr>
+Date: Mon, 2 Dec 2019 15:11:38 +0100
+Subject: [PATCH] sch_cake: Add missing NLA policy entry TCA_CAKE_SPLIT_GSO
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This field has never been checked since introduction in mainline kernel
+
+Signed-off-by: Victorien Molle <victorien.molle@wifirst.fr>
+Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
+Fixes: 2db6dc2662ba "sch_cake: Make gso-splitting configurable from userspace"
+Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
+---
+ net/sched/sch_cake.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/net/sched/sch_cake.c
++++ b/net/sched/sch_cake.c
+@@ -2180,6 +2180,7 @@ static const struct nla_policy cake_poli
+ [TCA_CAKE_MPU] = { .type = NLA_U32 },
+ [TCA_CAKE_INGRESS] = { .type = NLA_U32 },
+ [TCA_CAKE_ACK_FILTER] = { .type = NLA_U32 },
++ [TCA_CAKE_SPLIT_GSO] = { .type = NLA_U32 },
+ [TCA_CAKE_FWMARK] = { .type = NLA_U32 },
+ };
+
Use in tree version of cake for kernels 4.19+ and backport features from later kernel versions to 4.19. Unfortunately PROVIDES dependency handling produces bogus circular dependency warnings so whilst this package and kmod-sched-cake-oot should be able to PROVIDE kmod-sched-cake this doesn't work. Instead, remove the PROVIDES option and modify package sqm-scripts to depend on the correct module independently. Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> --- package/kernel/kmod-sched-cake-oot/Makefile | 3 +- package/kernel/linux/modules/netsupport.mk | 17 +- ...-sch_cake-Make-the-dual-modes-fairer.patch | 217 ++++++++++++++++++ ...-use-of-connmarks-as-tin-classifiers.patch | 118 ++++++++++ ...erpret-fwmark-parameter-as-a-bitmask.patch | 102 ++++++++ ...rop-unused-variable-tin_quantum_prio.patch | 158 +++++++++++++ ...sing-NLA-policy-entry-TCA_CAKE_SPLIT.patch | 30 +++ 7 files changed, 642 insertions(+), 3 deletions(-) create mode 100644 target/linux/generic/backport-4.19/392-v5.1-sch_cake-Make-the-dual-modes-fairer.patch create mode 100644 target/linux/generic/backport-4.19/393-v5.1-sch_cake-Permit-use-of-connmarks-as-tin-classifiers.patch create mode 100644 target/linux/generic/backport-4.19/394-v5.1-sch_cake-Interpret-fwmark-parameter-as-a-bitmask.patch create mode 100644 target/linux/generic/backport-4.19/395-v5.4-sch_cake-drop-unused-variable-tin_quantum_prio.patch create mode 100644 target/linux/generic/backport-4.19/396-v5.4-sch_cake-Add-missing-NLA-policy-entry-TCA_CAKE_SPLIT.patch