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authorSander Vrijders <sander.vrijders@intec.ugent.be>2016-10-08 19:42:51 +0200
committerSander Vrijders <sander.vrijders@intec.ugent.be>2016-10-11 16:15:33 +0200
commit69ef99bb2dc05337e8189acc42dc9122f4182ead (patch)
tree2808e55f80991cb9b59266c15726c982f3a4ca50 /src/ipcpd/normal/frct.c
parentdbf3ab8dfb2cbe8167c464e3cf6a9aa757bfff6a (diff)
downloadouroboros-69ef99bb2dc05337e8189acc42dc9122f4182ead.tar.gz
ouroboros-69ef99bb2dc05337e8189acc42dc9122f4182ead.zip
ipcpd: normal: First version of the fast path bootstrap
This is the first version of the fast path bootstrap in the normal IPCP. It sets up a connection with the other end, and creates the appropriate data structures. N+1 and N-1 SDUs are read and written and passed through the right components.
Diffstat (limited to 'src/ipcpd/normal/frct.c')
-rw-r--r--src/ipcpd/normal/frct.c300
1 files changed, 211 insertions, 89 deletions
diff --git a/src/ipcpd/normal/frct.c b/src/ipcpd/normal/frct.c
index 417815b7..abbde779 100644
--- a/src/ipcpd/normal/frct.c
+++ b/src/ipcpd/normal/frct.c
@@ -22,8 +22,6 @@
#define OUROBOROS_PREFIX "flow-rtx-control"
-#define IDS_SIZE 2048
-
#include <ouroboros/config.h>
#include <ouroboros/logs.h>
#include <ouroboros/bitmap.h>
@@ -34,7 +32,8 @@
#include <pthread.h>
#include "frct.h"
-
+#include "rmt.h"
+#include "fmgr.h"
enum conn_state {
CONN_PENDING = 0,
@@ -45,29 +44,29 @@ struct frct_i {
uint32_t cep_id;
uint32_t r_address;
uint32_t r_cep_id;
+ enum qos_cube cube;
+ uint64_t seqno;
enum conn_state state;
- struct list_head next;
};
-struct frct {
- struct dt_const * dtc;
+struct {
uint32_t address;
- struct list_head instances;
pthread_mutex_t instances_lock;
+ struct frct_i ** instances;
struct bmp * cep_ids;
pthread_mutex_t cep_ids_lock;
-} * frct = NULL;
+} frct;
static int next_cep_id()
{
int ret;
- pthread_mutex_lock(&frct->cep_ids_lock);
- ret = bmp_allocate(frct->cep_ids);
- pthread_mutex_unlock(&frct->cep_ids_lock);
+ pthread_mutex_lock(&frct.cep_ids_lock);
+ ret = bmp_allocate(frct.cep_ids);
+ pthread_mutex_unlock(&frct.cep_ids_lock);
return ret;
}
@@ -76,40 +75,34 @@ static int release_cep_id(int id)
{
int ret;
- pthread_mutex_lock(&frct->cep_ids_lock);
- ret = bmp_release(frct->cep_ids, id);
- pthread_mutex_unlock(&frct->cep_ids_lock);
+ pthread_mutex_lock(&frct.cep_ids_lock);
+ ret = bmp_release(frct.cep_ids, id);
+ pthread_mutex_unlock(&frct.cep_ids_lock);
return ret;
}
-int frct_init(struct dt_const * dtc, uint32_t address)
+int frct_init(uint32_t address)
{
- if (dtc == NULL)
- return -1;
+ int i;
+ frct.address = address;
- frct = malloc(sizeof(*frct));
- if (frct == NULL)
+ if (pthread_mutex_init(&frct.cep_ids_lock, NULL))
return -1;
- frct->dtc = dtc;
- frct->address = address;
-
- INIT_LIST_HEAD(&frct->instances);
-
- if (pthread_mutex_init(&frct->cep_ids_lock, NULL)) {
- free(frct);
+ if (pthread_mutex_init(&frct.instances_lock, NULL))
return -1;
- }
- if (pthread_mutex_init(&frct->instances_lock, NULL)) {
- free(frct);
+ frct.instances = malloc(sizeof(*(frct.instances)) * IRMD_MAX_FLOWS);
+ if (frct.instances == NULL)
return -1;
- }
- frct->cep_ids = bmp_create(IDS_SIZE, 0);
- if (frct->cep_ids == NULL) {
- free(frct);
+ for (i = 0; i < IRMD_MAX_FLOWS; i++)
+ frct.instances[i] = NULL;
+
+ frct.cep_ids = bmp_create(IRMD_MAX_FLOWS, (INVALID_CEP_ID + 1));
+ if (frct.cep_ids == NULL) {
+ free(frct.instances);
return -1;
}
@@ -118,117 +111,246 @@ int frct_init(struct dt_const * dtc, uint32_t address)
int frct_fini()
{
- pthread_mutex_lock(&frct->cep_ids_lock);
- bmp_destroy(frct->cep_ids);
- pthread_mutex_unlock(&frct->cep_ids_lock);
- free(frct);
+ pthread_mutex_lock(&frct.cep_ids_lock);
+ bmp_destroy(frct.cep_ids);
+ pthread_mutex_unlock(&frct.cep_ids_lock);
+
+ free(frct.instances);
return 0;
}
-struct dt_const * frct_dt_const()
+static struct frct_i * create_frct_i(uint32_t address,
+ cep_id_t r_cep_id)
{
- if (frct == NULL)
+ struct frct_i * instance;
+ cep_id_t id;
+
+ instance = malloc(sizeof(*instance));
+ if (instance == NULL)
return NULL;
- return frct->dtc;
-}
+ id = next_cep_id();
+ instance->r_address = address;
+ instance->cep_id = id;
+ instance->r_cep_id = r_cep_id;
+ instance->state = CONN_PENDING;
+ instance->seqno = 0;
-int frct_dt_flow(int fd,
- enum qos_cube qos)
-{
- LOG_MISSING;
+ frct.instances[id] = instance;
- return -1;
+ return instance;
}
-int frct_rmt_post()
+int frct_rmt_post_sdu(struct pci * pci,
+ struct shm_du_buff * sdb)
{
- LOG_MISSING;
+ struct frct_i * instance;
+ buffer_t buf;
+ cep_id_t id;
- return -1;
+ if (pci == NULL || sdb == NULL)
+ return -1;
+
+ if (pci->dst_cep_id == INVALID_CEP_ID) {
+ pthread_mutex_lock(&frct.instances_lock);
+ instance = create_frct_i(pci->src_addr,
+ pci->src_cep_id);
+ if (instance == NULL) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ return -1;
+ }
+ id = instance->cep_id;
+ instance->r_cep_id = pci->src_cep_id;
+ pthread_mutex_unlock(&frct.instances_lock);
+
+ buf.len = shm_du_buff_tail(sdb) - shm_du_buff_head(sdb);
+ buf.data = shm_du_buff_head(sdb);
+
+ if (fmgr_frct_post_buf(id, &buf)) {
+ LOG_ERR("Failed to hand buffer to FMGR.");
+ free(pci);
+ return -1;
+ }
+ } else {
+ /* FIXME: Known cep-ids are delivered to FMGR (minimal DTP) */
+ if (fmgr_frct_post_sdu(pci->dst_cep_id, sdb)) {
+ LOG_ERR("Failed to hand SDU to FMGR.");
+ free(pci);
+ return -1;
+ }
+ }
+
+ free(pci);
+
+ return 0;
}
/* Call under instances lock */
static void destroy_frct_i(struct frct_i * instance)
{
release_cep_id(instance->cep_id);
- list_del(&instance->next);
+ frct.instances[instance->cep_id] = NULL;
free(instance);
}
-struct frct_i * frct_i_create(uint32_t address,
- buffer_t * buf,
- enum qos_cube cube)
+cep_id_t frct_i_create(uint32_t address,
+ buffer_t * buf,
+ enum qos_cube cube)
{
struct frct_i * instance;
+ struct pci pci;
+ cep_id_t id;
- if (buf == NULL ||
- buf->data == NULL)
- return NULL;
+ if (buf == NULL || buf->data == NULL)
+ return INVALID_CEP_ID;
- instance = malloc(sizeof(*instance));
- if (instance == NULL)
- return NULL;
-
- pthread_mutex_lock(&frct->instances_lock);
-
- instance->r_address = address;
- instance->cep_id = next_cep_id();
- instance->state = CONN_PENDING;
+ pthread_mutex_lock(&frct.instances_lock);
+ instance = create_frct_i(address, INVALID_CEP_ID);
+ if (instance == NULL) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ return INVALID_CEP_ID;
+ }
+ id = instance->cep_id;
+ instance->cube = cube;
+ pthread_mutex_unlock(&frct.instances_lock);
+
+ pci.pdu_type = PDU_TYPE_MGMT;
+ pci.dst_addr = address;
+ pci.src_addr = frct.address;
+ pci.dst_cep_id = 0;
+ pci.src_cep_id = id;
+ pci.seqno = 0;
+ pci.qos_id = cube;
+
+ if (rmt_frct_write_buf(&pci, buf)) {
+ free(instance);
+ LOG_ERR("Failed to hand PDU to RMT.");
+ return INVALID_CEP_ID;
+ }
- INIT_LIST_HEAD(&instance->next);
- list_add(&instance->next, &frct->instances);
+ return id;
+}
- pthread_mutex_unlock(&frct->instances_lock);
+int frct_i_accept(cep_id_t id,
+ buffer_t * buf,
+ enum qos_cube cube)
+{
+ struct pci pci;
+ struct frct_i * instance;
- /* FIXME: Pack into FRCT header and hand SDU to RMT */
+ if (buf == NULL || buf->data == NULL)
+ return -1;
- return instance;
-}
+ pthread_mutex_lock(&frct.instances_lock);
-int frct_i_accept(struct frct_i * instance,
- buffer_t * buf)
-{
- if (instance == NULL || buf == NULL || buf->data == NULL)
+ instance = frct.instances[id];
+ if (instance == NULL) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ LOG_ERR("Invalid instance.");
return -1;
+ }
- pthread_mutex_lock(&frct->instances_lock);
if (instance->state != CONN_PENDING) {
- pthread_mutex_unlock(&frct->instances_lock);
+ pthread_mutex_unlock(&frct.instances_lock);
return -1;
}
instance->state = CONN_ESTABLISHED;
- instance->cep_id = next_cep_id();
+ instance->cube = cube;
+ instance->seqno = 0;
- pthread_mutex_unlock(&frct->instances_lock);
+ pci.pdu_type = PDU_TYPE_MGMT;
+ pci.dst_addr = instance->r_address;
+ pci.src_addr = frct.address;
+ pci.dst_cep_id = instance->r_cep_id;
+ pci.src_cep_id = instance->cep_id;
+ pci.seqno = 0;
+ pci.qos_id = cube;
- /* FIXME: Pack into FRCT header and hand SDU to RMT */
+ pthread_mutex_unlock(&frct.instances_lock);
+
+ if (rmt_frct_write_buf(&pci, buf))
+ return -1;
return 0;
}
-int frct_i_destroy(struct frct_i * instance,
- buffer_t * buf)
+int frct_i_destroy(cep_id_t id,
+ buffer_t * buf)
{
- if (instance == NULL)
- return -1;
+ struct pci pci;
+ struct frct_i * instance;
+
+ pthread_mutex_lock(&frct.instances_lock);
- pthread_mutex_lock(&frct->instances_lock);
+ instance = frct.instances[id];
+ if (instance == NULL) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ LOG_ERR("Invalid instance.");
+ return -1;
+ }
if (!(instance->state == CONN_PENDING ||
instance->state == CONN_ESTABLISHED)) {
- pthread_mutex_unlock(&frct->instances_lock);
+ pthread_mutex_unlock(&frct.instances_lock);
return -1;
}
+ pci.pdu_type = PDU_TYPE_MGMT;
+ pci.dst_addr = instance->r_address;
+ pci.src_addr = frct.address;
+ pci.dst_cep_id = instance->r_cep_id;
+ pci.src_cep_id = instance->cep_id;
+ pci.seqno = 0;
+ pci.qos_id = instance->cube;
+
destroy_frct_i(instance);
- pthread_mutex_unlock(&frct->instances_lock);
+ pthread_mutex_unlock(&frct.instances_lock);
+
+ if (buf != NULL && buf->data != NULL)
+ if (rmt_frct_write_buf(&pci, buf))
+ return -1;
+
+ return 0;
+}
- if (buf != NULL && buf->data != NULL) {
+int frct_i_write_sdu(cep_id_t id,
+ struct shm_du_buff * sdb)
+{
+ struct pci pci;
+ struct frct_i * instance;
+
+ if (sdb == NULL)
+ return -1;
- /* FIXME: Pack into FRCT header and hand SDU to RMT */
+ pthread_mutex_lock(&frct.instances_lock);
+
+ instance = frct.instances[id];
+ if (instance == NULL) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ LOG_ERR("Invalid instance.");
+ return -1;
+ }
+
+ if (instance->state != CONN_ESTABLISHED) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ LOG_ERR("Connection is not established.");
+ return -1;
+ }
+
+ pci.pdu_type = PDU_TYPE_DTP;
+ pci.dst_addr = instance->r_address;
+ pci.src_addr = frct.address;
+ pci.dst_cep_id = instance->r_cep_id;
+ pci.src_cep_id = instance->cep_id;
+ pci.seqno = (instance->seqno)++;
+ pci.qos_id = instance->cube;
+
+ if (rmt_frct_write_sdu(&pci, sdb)) {
+ pthread_mutex_unlock(&frct.instances_lock);
+ LOG_ERR("Failed to hand SDU to RMT.");
+ return -1;
}
return 0;