build: Refactor normal to unicast

This completes the renaming of the normal IPCP to the unicast IPCP in
the sources, to get everything consistent with the documentation.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 0 insertions, 491 deletions

diff --git a/src/ipcpd/normal/fa.c b/src/ipcpd/normal/fa.c
deleted file mode 100644
index fbcbc6fa..00000000
--- a/src/ipcpd/normal/fa.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2019
- *
- * Flow allocator of the IPC Process
- *
- *    Dimitri Staessens <dimitri.staessens@ugent.be>
- *    Sander Vrijders   <sander.vrijders@ugent.be>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., http://www.fsf.org/about/contact/.
- */
-
-#if defined(__linux__) || defined(__CYGWIN__)
-#define _DEFAULT_SOURCE
-#else
-#define _POSIX_C_SOURCE 200112L
-#endif
-
-#include "config.h"
-
-#define FA               "flow-allocator"
-#define OUROBOROS_PREFIX FA
-
-#include <ouroboros/logs.h>
-#include <ouroboros/fqueue.h>
-#include <ouroboros/errno.h>
-#include <ouroboros/dev.h>
-#include <ouroboros/ipcp-dev.h>
-
-#include "dir.h"
-#include "fa.h"
-#include "psched.h"
-#include "ipcp.h"
-#include "dt.h"
-
-#include <pthread.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define TIMEOUT 10000 /* nanoseconds */
-
-#define FLOW_REQ   0
-#define FLOW_REPLY 1
-
-struct fa_msg {
-        uint64_t s_addr;
-        uint32_t r_eid;
-        uint32_t s_eid;
-        uint8_t  code;
-        int8_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 cmd {
-        struct list_head     next;
-        struct shm_du_buff * sdb;
-};
-
-struct {
-        pthread_rwlock_t flows_lock;
-        int              r_eid[PROG_MAX_FLOWS];
-        uint64_t         r_addr[PROG_MAX_FLOWS];
-        int              fd;
-
-        struct list_head cmds;
-        pthread_cond_t   cond;
-        pthread_mutex_t  mtx;
-        pthread_t        worker;
-
-        struct psched *  psched;
-} fa;
-
-static void packet_handler(int                  fd,
-                           qoscube_t            qc,
-                           struct shm_du_buff * sdb)
-{
-        pthread_rwlock_rdlock(&fa.flows_lock);
-
-        if (dt_write_packet(fa.r_addr[fd], qc, fa.r_eid[fd], sdb)) {
-                pthread_rwlock_unlock(&fa.flows_lock);
-                ipcp_sdb_release(sdb);
-                log_warn("Failed to forward packet.");
-                return;
-        }
-
-        pthread_rwlock_unlock(&fa.flows_lock);
-}
-
-static void destroy_conn(int fd)
-{
-        fa.r_eid[fd]   = -1;
-        fa.r_addr[fd] = INVALID_ADDR;
-}
-
-static void fa_post_packet(void *               comp,
-                           struct shm_du_buff * sdb)
-{
-        struct cmd * cmd;
-
-        assert(comp == &fa);
-
-        (void) comp;
-
-        cmd = malloc(sizeof(*cmd));
-        if (cmd == NULL) {
-                log_err("Command failed. Out of memory.");
-                ipcp_sdb_release(sdb);
-                return;
-        }
-
-        cmd->sdb = sdb;
-
-        pthread_mutex_lock(&fa.mtx);
-
-        list_add(&cmd->next, &fa.cmds);
-
-        pthread_cond_signal(&fa.cond);
-
-        pthread_mutex_unlock(&fa.mtx);
-}
-
-static void * fa_handle_packet(void * o)
-{
-        struct timespec ts  = {0, TIMEOUT * 1000};
-
-        (void) o;
-
-        while (true) {
-                struct timespec abstime;
-                int             fd;
-                uint8_t *       buf;
-                struct fa_msg * msg;
-                qosspec_t       qs;
-                struct cmd *    cmd;
-
-                pthread_mutex_lock(&fa.mtx);
-
-                pthread_cleanup_push((void (*)(void *)) pthread_mutex_unlock,
-                                     &fa.mtx);
-
-                while (list_is_empty(&fa.cmds))
-                        pthread_cond_wait(&fa.cond, &fa.mtx);
-
-                cmd = list_last_entry(&fa.cmds, struct cmd, next);
-                list_del(&cmd->next);
-
-                pthread_cleanup_pop(true);
-
-                buf = malloc(sizeof(*msg) + ipcp_dir_hash_len());
-                if (buf == NULL) {
-                        log_err("Failed to allocate memory.");
-                        ipcp_sdb_release(cmd->sdb);
-                        free(cmd);
-                        continue;
-                }
-
-                msg = (struct fa_msg *) buf;
-
-                /* Depending on the message call the function in ipcp-dev.h */
-
-                assert(sizeof(*msg) + ipcp_dir_hash_len() >=
-                       (unsigned long int) (shm_du_buff_tail(cmd->sdb) -
-                                            shm_du_buff_head(cmd->sdb)));
-
-                memcpy(msg, shm_du_buff_head(cmd->sdb),
-                       shm_du_buff_tail(cmd->sdb) - shm_du_buff_head(cmd->sdb));
-
-                ipcp_sdb_release(cmd->sdb);
-
-                free(cmd);
-
-                switch (msg->code) {
-                case FLOW_REQ:
-                        clock_gettime(PTHREAD_COND_CLOCK, &abstime);
-
-                        pthread_mutex_lock(&ipcpi.alloc_lock);
-
-                        while (ipcpi.alloc_id != -1 &&
-                               ipcp_get_state() == IPCP_OPERATIONAL) {
-                                ts_add(&abstime, &ts, &abstime);
-                                pthread_cond_timedwait(&ipcpi.alloc_cond,
-                                                       &ipcpi.alloc_lock,
-                                                       &abstime);
-                        }
-
-                        if (ipcp_get_state() != IPCP_OPERATIONAL) {
-                                pthread_mutex_unlock(&ipcpi.alloc_lock);
-                                log_dbg("Won't allocate over non-operational"
-                                        "IPCP.");
-                                free(msg);
-                                continue;
-                        }
-
-                        assert(ipcpi.alloc_id == -1);
-
-                        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);
-
-                        fd = ipcp_flow_req_arr((uint8_t *) (msg + 1),
-                                               ipcp_dir_hash_len(),
-                                               qs);
-                        if (fd < 0) {
-                                pthread_mutex_unlock(&ipcpi.alloc_lock);
-                                log_err("Failed to get fd for flow.");
-                                free(msg);
-                                continue;
-                        }
-
-                        pthread_rwlock_wrlock(&fa.flows_lock);
-
-                        fa.r_eid[fd]  = ntoh32(msg->s_eid);
-                        fa.r_addr[fd] = ntoh64(msg->s_addr);
-
-                        pthread_rwlock_unlock(&fa.flows_lock);
-
-                        ipcpi.alloc_id = fd;
-                        pthread_cond_broadcast(&ipcpi.alloc_cond);
-
-                        pthread_mutex_unlock(&ipcpi.alloc_lock);
-
-                        break;
-                case FLOW_REPLY:
-                        pthread_rwlock_wrlock(&fa.flows_lock);
-
-                        fa.r_eid[ntoh32(msg->r_eid)] = ntoh32(msg->s_eid);
-
-                        ipcp_flow_alloc_reply(ntoh32(msg->r_eid),
-                                              msg->response);
-
-                        if (msg->response < 0)
-                                destroy_conn(ntoh32(msg->r_eid));
-                        else
-                                psched_add(fa.psched, ntoh32(msg->r_eid));
-
-                        pthread_rwlock_unlock(&fa.flows_lock);
-
-                        break;
-                default:
-                        log_err("Got an unknown flow allocation message.");
-                        break;
-                }
-
-                free(msg);
-        }
-}
-
-int fa_init(void)
-{
-        int i;
-
-        for (i = 0; i < PROG_MAX_FLOWS; ++i)
-                destroy_conn(i);
-
-        if (pthread_rwlock_init(&fa.flows_lock, NULL))
-                goto fail_rwlock;
-
-        if (pthread_mutex_init(&fa.mtx, NULL))
-                goto fail_mtx;
-
-        if (pthread_cond_init(&fa.cond, NULL))
-                goto fail_cond;
-
-        list_head_init(&fa.cmds);
-
-        fa.fd = dt_reg_comp(&fa, &fa_post_packet, FA);
-
-        return 0;
-
- fail_cond:
-        pthread_mutex_destroy(&fa.mtx);
- fail_mtx:
-        pthread_rwlock_destroy(&fa.flows_lock);
- fail_rwlock:
-        log_err("Failed to initialize flow allocator.");
-        return -1;
-}
-
-void fa_fini(void)
-{
-        pthread_cond_destroy(&fa.cond);;
-        pthread_mutex_destroy(&fa.mtx);
-        pthread_rwlock_destroy(&fa.flows_lock);
-}
-
-int fa_start(void)
-{
-        struct sched_param  par;
-        int                 pol;
-        int                 max;
-
-        fa.psched = psched_create(packet_handler);
-        if (fa.psched == NULL) {
-                log_err("Failed to start packet scheduler.");
-                goto fail_psched;
-        }
-
-        if (pthread_create(&fa.worker, NULL, fa_handle_packet, NULL)) {
-                log_err("Failed to create worker thread.");
-                goto fail_thread;
-        }
-
-        if (pthread_getschedparam(fa.worker, &pol, &par)) {
-                log_err("Failed to get worker thread scheduling parameters.");
-                goto fail_sched;
-        }
-
-        max = sched_get_priority_max(pol);
-        if (max < 0) {
-                log_err("Failed to get max priority for scheduler.");
-                goto fail_sched;
-        }
-
-        par.sched_priority = max;
-
-        if (pthread_setschedparam(fa.worker, pol, &par)) {
-                log_err("Failed to set scheduler priority to maximum.");
-                goto fail_sched;
-        }
-
-        return 0;
-
- fail_sched:
-        pthread_cancel(fa.worker);
-        pthread_join(fa.worker, NULL);
- fail_thread:
-        psched_destroy(fa.psched);
- fail_psched:
-        log_err("Failed to start flow allocator.");
-        return -1;
-}
-
-void fa_stop(void)
-{
-        pthread_cancel(fa.worker);
-        pthread_join(fa.worker, NULL);
-
-        psched_destroy(fa.psched);
-}
-
-int fa_alloc(int             fd,
-             const uint8_t * dst,
-             qosspec_t       qs)
-{
-        struct fa_msg *      msg;
-        uint64_t             addr;
-        struct shm_du_buff * sdb;
-        qoscube_t            qc;
-
-        addr = dir_query(dst);
-        if (addr == 0)
-                return -1;
-
-        if (ipcp_sdb_reserve(&sdb, sizeof(*msg) + ipcp_dir_hash_len()))
-                return -1;
-
-        msg               = (struct fa_msg *) shm_du_buff_head(sdb);
-        msg->code         = FLOW_REQ;
-        msg->s_eid        = hton32(fd);
-        msg->s_addr       = hton64(ipcpi.dt_addr);
-        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());
-
-        qc = qos_spec_to_cube(qs);
-
-        if (dt_write_packet(addr, qc, fa.fd, sdb)) {
-                ipcp_sdb_release(sdb);
-                return -1;
-        }
-
-        pthread_rwlock_wrlock(&fa.flows_lock);
-
-        assert(fa.r_eid[fd] == -1);
-        fa.r_addr[fd] = addr;
-
-        pthread_rwlock_unlock(&fa.flows_lock);
-
-        return 0;
-}
-
-int fa_alloc_resp(int fd,
-                  int response)
-{
-        struct timespec      ts = {0, TIMEOUT * 1000};
-        struct timespec      abstime;
-        struct fa_msg *      msg;
-        struct shm_du_buff * sdb;
-        qoscube_t            qc;
-
-        clock_gettime(PTHREAD_COND_CLOCK, &abstime);
-
-        pthread_mutex_lock(&ipcpi.alloc_lock);
-
-        while (ipcpi.alloc_id != fd && ipcp_get_state() == IPCP_OPERATIONAL) {
-                ts_add(&abstime, &ts, &abstime);
-                pthread_cond_timedwait(&ipcpi.alloc_cond,
-                                       &ipcpi.alloc_lock,
-                                       &abstime);
-        }
-
-        if (ipcp_get_state() != IPCP_OPERATIONAL) {
-                pthread_mutex_unlock(&ipcpi.alloc_lock);
-                return -1;
-        }
-
-        ipcpi.alloc_id = -1;
-        pthread_cond_broadcast(&ipcpi.alloc_cond);
-
-        pthread_mutex_unlock(&ipcpi.alloc_lock);
-
-        if (ipcp_sdb_reserve(&sdb, sizeof(*msg) + ipcp_dir_hash_len())) {
-                destroy_conn(fd);
-                return -1;
-        }
-
-        pthread_rwlock_wrlock(&fa.flows_lock);
-
-        msg           = (struct fa_msg *) shm_du_buff_head(sdb);
-        msg->code     = FLOW_REPLY;
-        msg->r_eid    = hton32(fa.r_eid[fd]);
-        msg->s_eid    = hton32(fd);
-        msg->response = response;
-
-        if (response < 0) {
-                destroy_conn(fd);
-                ipcp_sdb_release(sdb);
-        } else {
-                psched_add(fa.psched, fd);
-        }
-
-        ipcp_flow_get_qoscube(fd, &qc);
-
-        assert(qc >= 0 && qc < QOS_CUBE_MAX);
-
-        if (dt_write_packet(fa.r_addr[fd], qc, fa.fd, sdb)) {
-                destroy_conn(fd);
-                pthread_rwlock_unlock(&fa.flows_lock);
-                ipcp_sdb_release(sdb);
-                return -1;
-        }
-
-        pthread_rwlock_unlock(&fa.flows_lock);
-
-        return 0;
-}
-
-int fa_dealloc(int fd)
-{
-        if (ipcp_flow_fini(fd) < 0)
-                return 0;
-
-        pthread_rwlock_wrlock(&fa.flows_lock);
-
-        psched_del(fa.psched, fd);
-
-        destroy_conn(fd);
-
-        pthread_rwlock_unlock(&fa.flows_lock);
-
-        flow_dealloc(fd);
-
-        return 0;
-}