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authorDimitri Staessens <dimitri.staessens@ugent.be>2018-06-07 23:35:14 +0200
committerSander Vrijders <sander.vrijders@ugent.be>2018-06-08 10:26:07 +0200
commitb74980761cdcd9a706760ae9a4efb3806ca9bee2 (patch)
tree7619284e1ceb8044c9e5bf1b8fcea6729aead825 /src/lib
parent7d51ff3e5a4e42f21c9e5e89e5ea8493b7737161 (diff)
downloadouroboros-b74980761cdcd9a706760ae9a4efb3806ca9bee2.tar.gz
ouroboros-b74980761cdcd9a706760ae9a4efb3806ca9bee2.zip
lib: Add a data qos cube
This adds a data qos cube that is reliable. Reliable qos can be selected by setting the loss parameter of the qosspec to 0. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
Diffstat (limited to 'src/lib')
-rw-r--r--src/lib/dev.c4
-rw-r--r--src/lib/frct.c9
-rw-r--r--src/lib/qos.c27
-rw-r--r--src/lib/qoscube.c6
4 files changed, 34 insertions, 12 deletions
diff --git a/src/lib/dev.c b/src/lib/dev.c
index ee82bbaa..8417d63b 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -536,7 +536,7 @@ int flow_accept(qosspec_t * qs,
assert(ai.flows[fd].frcti == NULL);
if (qc != QOS_CUBE_RAW) {
- ai.flows[fd].frcti = frcti_create(fd);
+ ai.flows[fd].frcti = frcti_create(fd, qc);
if (ai.flows[fd].frcti == NULL) {
flow_fini(fd);
pthread_rwlock_unlock(&ai.lock);
@@ -611,7 +611,7 @@ int flow_alloc(const char * dst,
assert(ai.flows[fd].frcti == NULL);
if (qc != QOS_CUBE_RAW) {
- ai.flows[fd].frcti = frcti_create(fd);
+ ai.flows[fd].frcti = frcti_create(fd, qc);
if (ai.flows[fd].frcti == NULL) {
flow_fini(fd);
pthread_rwlock_unlock(&ai.lock);
diff --git a/src/lib/frct.c b/src/lib/frct.c
index bcb031c3..00261272 100644
--- a/src/lib/frct.c
+++ b/src/lib/frct.c
@@ -105,7 +105,8 @@ static void frct_fini(void)
timerwheel_destroy(frct.tw);
}
-static struct frcti * frcti_create(int fd)
+static struct frcti * frcti_create(int fd,
+ qoscube_t qc)
{
struct frcti * frcti;
time_t delta_t;
@@ -133,6 +134,9 @@ static struct frcti * frcti_create(int fd)
delta_t = (frcti->mpl + frcti->a + frcti->r) / 1000;
+ if (qc == QOS_CUBE_DATA)
+ frcti->snd_cr.cflags |= FRCTFRTX;
+
frcti->snd_cr.conf = true;
frcti->snd_cr.inact = 3 * delta_t + 1;
frcti->snd_cr.act = now.tv_sec - (frcti->snd_cr.inact + 1);
@@ -317,6 +321,9 @@ static int __frcti_snd(struct frcti * frcti,
pci->seqno = hton32(snd_cr->seqno++);
if (!(snd_cr->cflags & FRCTFRTX))
snd_cr->lwe++;
+ else
+ /* TODO: update on ACK */
+ snd_cr->lwe++;
snd_cr->act = now.tv_sec;
snd_cr->conf = false;
diff --git a/src/lib/qos.c b/src/lib/qos.c
index f5fbf1fb..bee6ed71 100644
--- a/src/lib/qos.c
+++ b/src/lib/qos.c
@@ -25,19 +25,22 @@
#include <stdint.h>
#include <stddef.h>
+#include <string.h>
qosspec_t qos_raw = {
.delay = UINT32_MAX,
- .bandwidth = UINT64_MAX,
+ .bandwidth = 0,
.availability = 0,
+ .loss = 1,
.in_order = 0,
.maximum_interruption = UINT32_MAX
};
qosspec_t qos_best_effort = {
.delay = UINT32_MAX,
- .bandwidth = UINT64_MAX,
+ .bandwidth = 0,
.availability = 0,
+ .loss = 1,
.in_order = 1,
.maximum_interruption = UINT32_MAX
};
@@ -46,27 +49,35 @@ qosspec_t qos_video = {
.delay = 100,
.bandwidth = UINT64_MAX,
.availability = 3,
+ .loss = 1,
.in_order = 1,
.maximum_interruption = 100
};
qosspec_t qos_voice = {
- .delay = 10,
+ .delay = 50,
.bandwidth = 100000,
.availability = 5,
+ .loss = 1,
.in_order = 1,
.maximum_interruption = 50
};
+qosspec_t qos_data = {
+ .delay = 1000,
+ .bandwidth = 0,
+ .availability = 0,
+ .in_order = 1,
+ .loss = 0,
+ .maximum_interruption = 2000
+};
+
int qosspec_init(qosspec_t * qs)
{
if (qs == NULL)
return -EINVAL;
- qs->delay = UINT32_MAX;
- qs->bandwidth = UINT64_MAX;
- qs->availability = 0;
- qs->maximum_interruption = UINT32_MAX;
+ *qs = qos_best_effort;
return 0;
}
@@ -76,7 +87,7 @@ int qosspec_fini(qosspec_t * qs)
if (qs == NULL)
return -EINVAL;
- qs = NULL;
+ memset(qs, 0, sizeof(*qs));
return 0;
}
diff --git a/src/lib/qoscube.c b/src/lib/qoscube.c
index 12f7c277..5dfa35ad 100644
--- a/src/lib/qoscube.c
+++ b/src/lib/qoscube.c
@@ -27,7 +27,9 @@
qoscube_t qos_spec_to_cube(qosspec_t qs)
{
- if (qs.delay <= qos_voice.delay &&
+ if (qs.loss == 0)
+ return QOS_CUBE_DATA;
+ else if (qs.delay <= qos_voice.delay &&
qs.bandwidth <= qos_voice.bandwidth &&
qs.availability >= qos_voice.availability &&
qs.maximum_interruption <= qos_voice.maximum_interruption)
@@ -52,6 +54,8 @@ qosspec_t qos_cube_to_spec(qoscube_t qc)
return qos_video;
case QOS_CUBE_BE:
return qos_best_effort;
+ case QOS_CUBE_DATA:
+ return qos_data;
default:
return qos_raw;
}