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 <t...@toke.dk>
Signed-off-by: Dave Taht <dave.t...@gmail.com>
---
tc/q_cake.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tc/q_cake.c b/tc/q_cake.c
index f1e232a..727d673 100644
--- a/tc/q_cake.c
+++ b/tc/q_cake.c
@@ -79,6 +79,7 @@ static void explain(void)
" 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"
@@ -108,6 +109,7 @@ static int cake_parse_opt(struct qdisc_util *qu, int argc,
char **argv,
int nat = -1;
int atm = -1;
int mpu = 0;
+ int split_gso = -1;
while (argc > 0) {
if (strcmp(*argv, "bandwidth") == 0) {
@@ -155,6 +157,10 @@ static int cake_parse_opt(struct qdisc_util *qu, int argc,
char **argv,
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) {
@@ -374,6 +380,9 @@ static int cake_parse_opt(struct qdisc_util *qu, int argc,
char **argv,
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)
--
2.7.4
