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authorDimitri Staessens <dimitri.staessens@ugent.be>2018-10-04 18:06:32 +0200
committerSander Vrijders <sander.vrijders@ugent.be>2018-10-05 09:07:47 +0200
commitb802b25ddfe6f1b6ecabe3ba70e3dac2e99e7a50 (patch)
tree94e787f0f0ca1f0254b3728b0156b2e3283d8518 /src/ipcpd/udp/main.c
parent937adca2a718b160b6d42bb8a3f28d96321fdb49 (diff)
downloadouroboros-b802b25ddfe6f1b6ecabe3ba70e3dac2e99e7a50.tar.gz
ouroboros-b802b25ddfe6f1b6ecabe3ba70e3dac2e99e7a50.zip
lib: Pass qosspec at flow allocation
The flow allocator now passes the full qos specification to the endpoint, instead of just a cube. This is a more flexible architecture, as it makes QoS cubes internal to the layers. Adds endianness transforms for the flow allocator protocol in the normal IPCP. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
Diffstat (limited to 'src/ipcpd/udp/main.c')
-rw-r--r--src/ipcpd/udp/main.c48
1 files changed, 33 insertions, 15 deletions
diff --git a/src/ipcpd/udp/main.c b/src/ipcpd/udp/main.c
index 6a350da0..96820662 100644
--- a/src/ipcpd/udp/main.c
+++ b/src/ipcpd/udp/main.c
@@ -73,8 +73,15 @@ struct mgmt_msg {
uint16_t src_udp_port;
uint16_t dst_udp_port;
uint8_t code;
- uint8_t qoscube;
uint8_t response;
+ /* QoS parameters from spec, aligned */
+ uint8_t availability;
+ uint8_t in_order;
+ uint32_t delay;
+ uint64_t bandwidth;
+ uint32_t loss;
+ uint32_t ber;
+ uint32_t max_gap;
} __attribute__((packed));
struct uf {
@@ -219,7 +226,7 @@ static int send_shim_udp_msg(uint8_t * buf,
static int ipcp_udp_port_alloc(uint32_t dst_ip_addr,
uint16_t src_udp_port,
const uint8_t * dst,
- qoscube_t cube)
+ qosspec_t qs)
{
uint8_t * buf;
struct mgmt_msg * msg;
@@ -235,7 +242,13 @@ static int ipcp_udp_port_alloc(uint32_t dst_ip_addr,
msg = (struct mgmt_msg *) buf;
msg->code = FLOW_REQ;
msg->src_udp_port = src_udp_port;
- msg->qoscube = cube;
+ msg->delay = hton32(qs.delay);
+ msg->bandwidth = hton64(qs.bandwidth);
+ msg->availability = qs.availability;
+ msg->loss = hton32(qs.loss);
+ msg->ber = hton32(qs.ber);
+ msg->in_order = qs.in_order;
+ msg->max_gap = hton32(qs.max_gap);
memcpy(msg + 1, dst, ipcp_dir_hash_len());
@@ -272,7 +285,7 @@ static int ipcp_udp_port_alloc_resp(uint32_t dst_ip_addr,
static int ipcp_udp_port_req(struct sockaddr_in * c_saddr,
const uint8_t * dst,
- qoscube_t cube)
+ qosspec_t qs)
{
struct timespec ts = {0, FD_UPDATE_TIMEOUT * 1000};
struct timespec abstime;
@@ -331,7 +344,7 @@ static int ipcp_udp_port_req(struct sockaddr_in * c_saddr,
}
/* reply to IRM */
- fd = ipcp_flow_req_arr(getpid(), dst, ipcp_dir_hash_len(), cube);
+ fd = ipcp_flow_req_arr(getpid(), dst, ipcp_dir_hash_len(), qs);
if (fd < 0) {
pthread_mutex_unlock(&ipcpi.alloc_lock);
log_err("Could not get new flow from IRMd.");
@@ -436,7 +449,7 @@ static void * ipcp_udp_listener(void * o)
while (true) {
struct mgmt_msg * msg = NULL;
-
+ qosspec_t qs;
memset(&buf, 0, SHIM_UDP_MSG_SIZE);
n = recvfrom(sfd, buf, SHIM_UDP_MSG_SIZE, 0,
(struct sockaddr *) &c_saddr,
@@ -455,9 +468,16 @@ static void * ipcp_udp_listener(void * o)
switch (msg->code) {
case FLOW_REQ:
c_saddr.sin_port = msg->src_udp_port;
+ qs.delay = ntoh32(msg->delay);
+ qs.bandwidth = ntoh64(msg->bandwidth);
+ qs.availability = msg->availability;
+ qs.loss = ntoh32(msg->loss);
+ qs.ber = ntoh32(msg->ber);
+ qs.in_order = msg->in_order;
+ qs.max_gap = ntoh32(msg->max_gap);
ipcp_udp_port_req(&c_saddr,
(uint8_t *) (msg + 1),
- msg->qoscube);
+ qs);
break;
case FLOW_REPLY:
ipcp_udp_port_alloc_reply(msg->src_udp_port,
@@ -555,7 +575,8 @@ static void * ipcp_udp_sdu_loop(void * o)
pthread_rwlock_unlock(&udp_data.flows_lock);
- pthread_cleanup_push((void (*)(void *)) ipcp_sdb_release,
+ pthread_cleanup_push((void (*)(void *))
+ ipcp_sdb_release,
(void *) sdb);
if (send(fd, shm_du_buff_head(sdb),
@@ -968,7 +989,7 @@ static int ipcp_udp_query(const uint8_t * hash)
static int ipcp_udp_flow_alloc(int fd,
const uint8_t * dst,
- qoscube_t cube)
+ qosspec_t qs)
{
struct sockaddr_in r_saddr; /* server address */
struct sockaddr_in f_saddr; /* flow */
@@ -978,12 +999,9 @@ static int ipcp_udp_flow_alloc(int fd,
log_dbg("Allocating flow to " HASH_FMT ".", HASH_VAL(dst));
- assert(dst);
+ (void) qs;
- if (cube > QOS_CUBE_DATA) {
- log_dbg("Unsupported QoS requested.");
- return -1;
- }
+ assert(dst);
skfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (skfd < 0)
@@ -1034,7 +1052,7 @@ static int ipcp_udp_flow_alloc(int fd,
pthread_rwlock_unlock(&udp_data.flows_lock);
- if (ipcp_udp_port_alloc(ip_addr, f_saddr.sin_port, dst, cube) < 0) {
+ if (ipcp_udp_port_alloc(ip_addr, f_saddr.sin_port, dst, qs) < 0) {
pthread_rwlock_wrlock(&udp_data.flows_lock);
udp_data.fd_to_uf[fd].udp = -1;