kmod-sched-cake: switch to in-tree cake for 4.19+
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>
This commit is contained in:
Kevin Darbyshire-Bryant
parent
475738c9af
commit
b74386acc6
|
|
@ -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 +kmod-ipt-conntrack
|
||||
PROVIDES:=kmod-sched-cake
|
||||
DEPENDS:=@LINUX_4_14 +kmod-sched-core +kmod-ipt-conntrack
|
||||
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
|
||||
|
|
|
|||
|
|
@ -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;
|
||||
}
|
||||
|
|
@ -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:
|
||||
|
|
@ -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);
|
||||
|
|
@ -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;
|
||||
}
|
||||
|
|
@ -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 },
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user