This patch makes sch_cake's gso/gro splitting configurable
from userspace.
To disable breaking apart superpackets in sch_cake:
tc qdisc replace dev whatever root cake no-split-gso
to enable:
tc qdisc replace dev whatever root cake split-gso
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Dave Taht <dave.taht@gmail.com>
[pulled from netdev list - no API/ABI change]
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
PKG_NAME:=iproute2
PKG_VERSION:=4.17.0
PKG_NAME:=iproute2
PKG_VERSION:=4.17.0
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=@KERNEL/linux/utils/net/iproute2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=@KERNEL/linux/utils/net/iproute2
TCMODULES += e_bpf.o
--- /dev/null
+++ b/tc/q_cake.c
TCMODULES += e_bpf.o
--- /dev/null
+++ b/tc/q_cake.c
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+
+/*
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+
+/*
+" dual-srchost | dual-dsthost | triple-isolate* ]\n"
+" [ nat | nonat* ]\n"
+" [ wash | nowash* ]\n"
+" dual-srchost | dual-dsthost | triple-isolate* ]\n"
+" [ nat | nonat* ]\n"
+" [ wash | nowash* ]\n"
++" [ split-gso* | no-split-gso ]\n"
+" [ ack-filter | ack-filter-aggressive | no-ack-filter* ]\n"
+" [ memlimit LIMIT ]\n"
+" [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ]\n"
+" [ ack-filter | ack-filter-aggressive | no-ack-filter* ]\n"
+" [ memlimit LIMIT ]\n"
+" [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ]\n"
+ int nat = -1;
+ int atm = -1;
+ int mpu = 0;
+ int nat = -1;
+ int atm = -1;
+ int mpu = 0;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "bandwidth") == 0) {
+
+ while (argc > 0) {
+ if (strcmp(*argv, "bandwidth") == 0) {
+ wash = 0;
+ } else if (strcmp(*argv, "wash") == 0) {
+ wash = 1;
+ wash = 0;
+ } else if (strcmp(*argv, "wash") == 0) {
+ wash = 1;
++ } else if (strcmp(*argv, "split-gso") == 0) {
++ split_gso = 1;
++ } else if (strcmp(*argv, "no-split-gso") == 0) {
++ split_gso = 0;
+ } else if (strcmp(*argv, "flowblind") == 0) {
+ flowmode = CAKE_FLOW_NONE;
+ } else if (strcmp(*argv, "srchost") == 0) {
+ } else if (strcmp(*argv, "flowblind") == 0) {
+ flowmode = CAKE_FLOW_NONE;
+ } else if (strcmp(*argv, "srchost") == 0) {
+ addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
+ if (wash != -1)
+ addattr_l(n, 1024, TCA_CAKE_WASH, &wash, sizeof(wash));
+ addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
+ if (wash != -1)
+ addattr_l(n, 1024, TCA_CAKE_WASH, &wash, sizeof(wash));
++ if (split_gso != -1)
++ addattr_l(n, 1024, TCA_CAKE_SPLIT_GSO, &split_gso,
++ sizeof(split_gso));
+ if (ingress != -1)
+ addattr_l(n, 1024, TCA_CAKE_INGRESS, &ingress, sizeof(ingress));
+ if (ack_filter != -1)
+ if (ingress != -1)
+ addattr_l(n, 1024, TCA_CAKE_INGRESS, &ingress, sizeof(ingress));
+ if (ack_filter != -1)