ipcpd: Add support for raptor FPGA device

This adds the initial raptor support from the master thesis entitled
(dutch) "Implementatie van de Recursive Internet Architecture op een
FPGA platform".

Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>

1 files changed, 1129 insertions, 0 deletions

diff --git a/src/ipcpd/raptor/main.c b/src/ipcpd/raptor/main.c
new file mode 100644
index 00000000..be66bd9a
--- /dev/null
+++ b/src/ipcpd/raptor/main.c
@@ -0,0 +1,1129 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * IPC process using the Raptor FPGA.
+ *
+ *    Alexander D'hoore <dhoore.alexander@gmail.com>
+ *    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/.
+ */
+
+#define _DEFAULT_SOURCE
+
+#define OUROBOROS_PREFIX "ipcpd/raptor"
+
+#include <ouroboros/config.h>
+#include <ouroboros/hash.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/list.h>
+#include <ouroboros/utils.h>
+#include <ouroboros/bitmap.h>
+#include <ouroboros/dev.h>
+#include <ouroboros/local-dev.h>
+#include <ouroboros/ipcp-dev.h>
+#include <ouroboros/fqueue.h>
+#include <ouroboros/logs.h>
+#include <ouroboros/time_utils.h>
+
+#include "ipcp.h"
+#include "raptor_messages.pb-c.h"
+
+#include <net/if.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+#include <malloc.h>
+
+#ifdef __linux__
+#include <linux/if_packet.h>
+#include <linux/if_ether.h>
+#endif
+
+#include <poll.h>
+#include <sys/mman.h>
+
+typedef RaptorMsg raptor_msg_t;
+
+#define THIS_TYPE IPCP_RAPTOR
+#define MGMT_SAP 0x01
+#define MAC_SIZE 6
+#define MAX_SAPS 64
+
+#define EVENT_WAIT_TIMEOUT 100 /* us */
+#define NAME_QUERY_TIMEOUT 2000 /* ms */
+#define MGMT_TIMEOUT 100 /* ms */
+
+#define IOCTL_SEND 0xAD420000
+#define IOCTL_RECV 0xAD430000
+#define IOCTL_SEND_DONE 0xAD440000
+#define IOCTL_RECV_DONE 0xAD450000
+#define IOCTL_RECV_NEED 0xAD460000
+
+#define RAPTOR_PAGE ((1 << 12) - 200) /* 4kB - 200 */
+
+#define RAPTOR_PAGE_MASK (~0xFFF)
+
+#define RAPTOR_BATCH 100
+
+#define RAPTOR_HEADER 3
+
+struct ef {
+        int8_t  sap;
+        int8_t  r_sap;
+        uint8_t r_addr[MAC_SIZE];
+};
+
+struct mgmt_frame {
+        struct list_head next;
+        uint8_t          r_addr[MAC_SIZE];
+        uint8_t          buf[RAPTOR_PAGE];
+        size_t           len;
+};
+
+struct {
+        int                ioctl_fd;
+
+        struct bmp *       saps;
+        flow_set_t *       np1_flows;
+        fqueue_t *         fq;
+        int *              ef_to_fd;
+        struct ef *        fd_to_ef;
+        pthread_rwlock_t   flows_lock;
+
+        pthread_t          send_thread;
+        pthread_t          recv_thread;
+        pthread_t          send_done_thread;
+        pthread_t          recv_done_thread;
+
+        /* Handle mgmt frames in a different thread */
+        pthread_t          mgmt_handler;
+        pthread_mutex_t    mgmt_lock;
+        pthread_cond_t     mgmt_cond;
+        struct list_head   mgmt_frames;
+
+} raptor_data;
+
+static int raptor_data_init(void)
+{
+        int                i;
+        int                ret = -1;
+        pthread_condattr_t cattr;
+
+        log_info("%s", __FUNCTION__);
+
+        raptor_data.fd_to_ef = malloc(sizeof(struct ef) * IRMD_MAX_FLOWS);
+        if (raptor_data.fd_to_ef == NULL)
+                return -ENOMEM;
+
+        raptor_data.ef_to_fd = malloc(sizeof(struct ef) * MAX_SAPS);
+        if (raptor_data.ef_to_fd == NULL) {
+                ret = -ENOMEM;
+                goto free_fd_to_ef;
+        }
+
+        raptor_data.saps = bmp_create(MAX_SAPS, 2);
+        if (raptor_data.saps == NULL) {
+                ret = -ENOMEM;
+                goto free_ef_to_fd;
+        }
+
+        raptor_data.np1_flows = flow_set_create();
+        if (raptor_data.np1_flows == NULL) {
+                ret = -ENOMEM;
+                goto bmp_destroy;
+        }
+
+        raptor_data.fq = fqueue_create();
+        if (raptor_data.fq == NULL) {
+                ret = -ENOMEM;
+                goto flow_set_destroy;
+        }
+
+        for (i = 0; i < MAX_SAPS; ++i)
+                raptor_data.ef_to_fd[i] = -1;
+
+        for (i = 0; i < IRMD_MAX_FLOWS; ++i) {
+                raptor_data.fd_to_ef[i].sap   = -1;
+                raptor_data.fd_to_ef[i].r_sap = -1;
+                memset(&raptor_data.fd_to_ef[i].r_addr, 0, MAC_SIZE);
+        }
+
+        if (pthread_rwlock_init(&raptor_data.flows_lock, NULL))
+                goto fqueue_destroy;
+
+        if (pthread_mutex_init(&raptor_data.mgmt_lock, NULL))
+                goto flow_lock_destroy;
+
+        if (pthread_condattr_init(&cattr))
+                goto mgmt_lock_destroy;;
+
+#ifndef __APPLE__
+        pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+
+        if (pthread_cond_init(&raptor_data.mgmt_cond, &cattr))
+                goto mgmt_lock_destroy;
+
+        list_head_init(&raptor_data.mgmt_frames);
+
+        return 0;
+
+ mgmt_lock_destroy:
+        pthread_mutex_destroy(&raptor_data.mgmt_lock);
+ flow_lock_destroy:
+        pthread_rwlock_destroy(&raptor_data.flows_lock);
+ fqueue_destroy:
+        fqueue_destroy(raptor_data.fq);
+ flow_set_destroy:
+        flow_set_destroy(raptor_data.np1_flows);
+ bmp_destroy:
+        bmp_destroy(raptor_data.saps);
+ free_ef_to_fd:
+        free(raptor_data.ef_to_fd);
+ free_fd_to_ef:
+        free(raptor_data.fd_to_ef);
+
+        return ret;
+}
+
+void raptor_data_fini(void)
+{
+        log_info("%s", __FUNCTION__);
+
+        close(raptor_data.ioctl_fd);
+        pthread_cond_destroy(&raptor_data.mgmt_cond);
+        pthread_mutex_destroy(&raptor_data.mgmt_lock);
+        pthread_rwlock_destroy(&raptor_data.flows_lock);
+        fqueue_destroy(raptor_data.fq);
+        flow_set_destroy(raptor_data.np1_flows);
+        bmp_destroy(raptor_data.saps);
+        free(raptor_data.fd_to_ef);
+        free(raptor_data.ef_to_fd);
+}
+
+static int raptor_ipcp_send_frame(struct shm_du_buff * sdb,
+                                  uint8_t              dsap)
+{
+        /* length (16b) + dsap (8b) */
+
+        uint8_t * frame;
+        size_t frame_len;
+        uint8_t * payload;
+        size_t len;
+
+        payload = shm_du_buff_head(sdb);
+        len = shm_du_buff_tail(sdb) - shm_du_buff_head(sdb);
+
+        if (payload == NULL) {
+                log_err("Payload was NULL.");
+                return -1;
+        }
+
+        frame_len = RAPTOR_HEADER + len;
+
+        if (frame_len >= RAPTOR_PAGE) {
+                log_err("Payload too large.");
+                return -1;
+        }
+
+        frame = memalign(1 << 12, 1 << 12);
+
+        if (frame == NULL) {
+                log_err("frame == NULL");
+                return -1;
+        }
+
+        if ((uint64_t)frame & 0xFFF) {
+                log_err("page offset not zero");
+                return -1;
+        }
+
+        frame[0] = (frame_len & 0x00FF) >> 0;
+        frame[1] = (frame_len & 0xFF00) >> 8;
+        frame[2] = dsap;
+
+        memcpy(&frame[RAPTOR_HEADER], payload, len);
+
+        ipcp_sdb_release(sdb);
+
+        if (ioctl(raptor_data.ioctl_fd, IOCTL_SEND | 1, &frame) != 1) {
+                log_err("Ioctl send failed.");
+                free(frame);
+                return -1;
+        }
+        return 0;
+}
+
+static int raptor_ipcp_send_mgmt_frame(raptor_msg_t * msg,
+                                        const uint8_t *      dst_addr)
+{
+        size_t    len;
+        uint8_t * buf;
+        struct shm_du_buff * sdb;
+
+        (void)dst_addr;
+
+        log_info("%s", __FUNCTION__);
+
+        len = raptor_msg__get_packed_size(msg);
+        if (len == 0)
+                return -1;
+
+        if (ipcp_sdb_reserve(&sdb, len) < 0) {
+                log_err("failed to reserve sdb for management frame.");
+                return -1;
+        }
+
+        buf = shm_du_buff_head(sdb);
+
+        raptor_msg__pack(msg, buf);
+
+        if (raptor_ipcp_send_frame(sdb, MGMT_SAP)) {
+                log_err("Failed to send management frame.");
+                return -1;
+        }
+        return 0;
+}
+
+static int raptor_ipcp_sap_alloc(const uint8_t * dst_addr,
+                                  uint8_t         ssap,
+                                  const uint8_t * hash,
+                                  qoscube_t       cube)
+{
+        raptor_msg_t msg = RAPTOR_MSG__INIT;
+
+        log_info("%s", __FUNCTION__);
+
+        msg.code        = RAPTOR_MSG_CODE__FLOW_REQ;
+        msg.has_ssap    = true;
+        msg.ssap        = ssap;
+        msg.has_hash    = true;
+        msg.hash.len    = ipcp_dir_hash_len();
+        msg.hash.data   = (uint8_t *) hash;
+        msg.has_qoscube = true;
+        msg.qoscube     = cube;
+
+        return raptor_ipcp_send_mgmt_frame(&msg, dst_addr);
+}
+
+static int raptor_ipcp_sap_alloc_resp(uint8_t * dst_addr,
+                                       uint8_t   ssap,
+                                       uint8_t   dsap,
+                                       int       response)
+{
+        raptor_msg_t msg = RAPTOR_MSG__INIT;
+
+        log_info("%s", __FUNCTION__);
+
+        msg.code         = RAPTOR_MSG_CODE__FLOW_REPLY;
+        msg.has_ssap     = true;
+        msg.ssap         = ssap;
+        msg.has_dsap     = true;
+        msg.dsap         = dsap;
+        msg.has_response = true;
+        msg.response     = response;
+
+        return raptor_ipcp_send_mgmt_frame(&msg, dst_addr);
+}
+
+static int raptor_ipcp_sap_req(uint8_t         r_sap,
+                                uint8_t *       r_addr,
+                                const uint8_t * dst,
+                                qoscube_t       cube)
+{
+        struct timespec ts = {0, EVENT_WAIT_TIMEOUT * 1000};
+        struct timespec abstime;
+        int             fd;
+
+        log_info("%s", __FUNCTION__);
+
+        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) {
+                log_dbg("Won't allocate over non-operational IPCP.");
+                pthread_mutex_unlock(&ipcpi.alloc_lock);
+                return -1;
+        }
+
+        /* reply to IRM, called under lock to prevent race */
+        fd = ipcp_flow_req_arr(getpid(), dst, ipcp_dir_hash_len(), cube);
+        if (fd < 0) {
+                pthread_mutex_unlock(&ipcpi.alloc_lock);
+                log_err("Could not get new flow from IRMd.");
+                return -1;
+        }
+
+        pthread_rwlock_wrlock(&raptor_data.flows_lock);
+
+        raptor_data.fd_to_ef[fd].r_sap = r_sap;
+        memcpy(raptor_data.fd_to_ef[fd].r_addr, r_addr, MAC_SIZE);
+
+        ipcpi.alloc_id = fd;
+        pthread_cond_broadcast(&ipcpi.alloc_cond);
+
+        pthread_rwlock_unlock(&raptor_data.flows_lock);
+        pthread_mutex_unlock(&ipcpi.alloc_lock);
+
+        log_dbg("New flow request, fd %d, remote SAP %d.", fd, r_sap);
+
+        return 0;
+}
+
+static int raptor_ipcp_sap_alloc_reply(uint8_t   ssap,
+                                        uint8_t * r_addr,
+                                        int       dsap,
+                                        int       response)
+{
+        int ret = 0;
+        int fd = -1;
+
+        log_info("%s", __FUNCTION__);
+
+        pthread_rwlock_wrlock(&raptor_data.flows_lock);
+
+        fd = raptor_data.ef_to_fd[dsap];
+        if (fd < 0) {
+                pthread_rwlock_unlock(& raptor_data.flows_lock);
+                log_err("No flow found with that SAP.");
+                return -1; /* -EFLOWNOTFOUND */
+        }
+
+        if (response) {
+                bmp_release(raptor_data.saps, raptor_data.fd_to_ef[fd].sap);
+        } else {
+                raptor_data.fd_to_ef[fd].r_sap = ssap;
+                memcpy(raptor_data.fd_to_ef[fd].r_addr, r_addr, MAC_SIZE);
+        }
+
+        pthread_rwlock_unlock(&raptor_data.flows_lock);
+
+        log_dbg("Flow reply, fd %d, SSAP %d, DSAP %d.", fd, ssap, dsap);
+
+        if ((ret = ipcp_flow_alloc_reply(fd, response)) < 0)
+                return -1;
+
+        return ret;
+
+}
+
+static int raptor_ipcp_name_query_req(const uint8_t * hash,
+                                       uint8_t *       r_addr)
+{
+        raptor_msg_t msg = RAPTOR_MSG__INIT;
+
+        log_info("%s", __FUNCTION__);
+
+        if (shim_data_reg_has(ipcpi.shim_data, hash)) {
+                msg.code      = RAPTOR_MSG_CODE__NAME_QUERY_REPLY;
+                msg.has_hash  = true;
+                msg.hash.len  = ipcp_dir_hash_len();
+                msg.hash.data = (uint8_t *) hash;
+
+                raptor_ipcp_send_mgmt_frame(&msg, r_addr);
+        }
+
+        return 0;
+}
+
+static int raptor_ipcp_name_query_reply(const uint8_t * hash,
+                                         uint8_t *       r_addr)
+{
+        uint64_t           address = 0;
+        struct list_head * pos;
+
+        log_info("%s", __FUNCTION__);
+
+        memcpy(&address, r_addr, MAC_SIZE);
+
+        shim_data_dir_add_entry(ipcpi.shim_data, hash, address);
+
+        pthread_mutex_lock(&ipcpi.shim_data->dir_queries_lock);
+        list_for_each(pos, &ipcpi.shim_data->dir_queries) {
+                struct dir_query * e =
+                        list_entry(pos, struct dir_query, next);
+                if (memcmp(e->hash, hash, ipcp_dir_hash_len()) == 0) {
+                        shim_data_dir_query_respond(e);
+                }
+        }
+        pthread_mutex_unlock(&ipcpi.shim_data->dir_queries_lock);
+
+        return 0;
+}
+
+static int raptor_ipcp_mgmt_frame(const uint8_t * buf,
+                                   size_t          len,
+                                   uint8_t *       r_addr)
+{
+        raptor_msg_t * msg;
+
+        log_info("%s", __FUNCTION__);
+
+        msg = raptor_msg__unpack(NULL, len, buf);
+        if (msg == NULL) {
+                log_err("Failed to unpack.");
+                return -1;
+        }
+
+        switch (msg->code) {
+        case RAPTOR_MSG_CODE__FLOW_REQ:
+                if (shim_data_reg_has(ipcpi.shim_data, msg->hash.data)) {
+                        raptor_ipcp_sap_req(msg->ssap,
+                                             r_addr,
+                                             msg->hash.data,
+                                             msg->qoscube);
+                }
+                break;
+        case RAPTOR_MSG_CODE__FLOW_REPLY:
+                raptor_ipcp_sap_alloc_reply(msg->ssap,
+                                             r_addr,
+                                             msg->dsap,
+                                             msg->response);
+                break;
+        case RAPTOR_MSG_CODE__NAME_QUERY_REQ:
+                raptor_ipcp_name_query_req(msg->hash.data, r_addr);
+                break;
+        case RAPTOR_MSG_CODE__NAME_QUERY_REPLY:
+                raptor_ipcp_name_query_reply(msg->hash.data, r_addr);
+                break;
+        default:
+                log_err("Unknown message received %d.", msg->code);
+                raptor_msg__free_unpacked(msg, NULL);
+                return -1;
+        }
+
+        raptor_msg__free_unpacked(msg, NULL);
+        return 0;
+}
+
+static void * raptor_ipcp_mgmt_handler(void * o)
+{
+        int                 ret;
+        struct timespec     timeout = {(MGMT_TIMEOUT / 1000),
+                                       (MGMT_TIMEOUT % 1000) * MILLION};
+        struct timespec     abstime;
+        struct mgmt_frame * frame;
+
+        (void) o;
+
+        log_info("%s", __FUNCTION__);
+
+        log_info("Mgmt handler started.");
+
+        while (true) {
+                ret = 0;
+
+                if (ipcp_get_state() != IPCP_OPERATIONAL)
+                        break;
+
+                clock_gettime(PTHREAD_COND_CLOCK, &abstime);
+                ts_add(&abstime, &timeout, &abstime);
+
+                pthread_mutex_lock(&raptor_data.mgmt_lock);
+
+                while (list_is_empty(&raptor_data.mgmt_frames) &&
+                       ret != -ETIMEDOUT)
+                        ret = -pthread_cond_timedwait(&raptor_data.mgmt_cond,
+                                                      &raptor_data.mgmt_lock,
+                                                      &abstime);
+
+                if (ret == -ETIMEDOUT) {
+                        pthread_mutex_unlock(&raptor_data.mgmt_lock);
+                        continue;
+                }
+
+                frame = list_first_entry((&raptor_data.mgmt_frames),
+                                         struct mgmt_frame, next);
+                if (frame == NULL) {
+                        pthread_mutex_unlock(&raptor_data.mgmt_lock);
+                        continue;
+                }
+
+                list_del(&frame->next);
+                pthread_mutex_unlock(&raptor_data.mgmt_lock);
+
+                raptor_ipcp_mgmt_frame(frame->buf, frame->len, frame->r_addr);
+                free(frame);
+        }
+
+        log_info("Mgmt handler stopped.");
+        return NULL;
+}
+
+static void raptor_ipcp_recv_frame(uint8_t* frame)
+{
+        uint8_t dsap;
+        uint8_t* payload;
+        size_t frame_len;
+        size_t length;
+        int fd;
+        struct mgmt_frame * mgmt_frame;
+        struct shm_du_buff * sdb;
+        size_t idx;
+
+        sdb = (struct shm_du_buff*)((uint64_t)frame & RAPTOR_PAGE_MASK);
+        idx = shm_du_buff_get_idx(sdb);
+
+        frame_len = frame[0] | (frame[1] << 8);
+
+        if (frame_len < RAPTOR_HEADER) {
+                log_err("Received packet smaller than header alone.");
+                ipcp_sdb_release(sdb);
+                return;
+        }
+        if (frame_len >= RAPTOR_PAGE) {
+                log_err("Received packet too large.");
+                ipcp_sdb_release(sdb);
+                return;
+        }
+
+        dsap = frame[2];
+        payload = &frame[RAPTOR_HEADER];
+        length = frame_len - RAPTOR_HEADER;
+
+        shm_du_buff_head_release(sdb, RAPTOR_HEADER);
+        shm_du_buff_tail_release(sdb, RAPTOR_PAGE - frame_len);
+
+        if (dsap == MGMT_SAP) {
+                pthread_mutex_lock(&raptor_data.mgmt_lock);
+
+                mgmt_frame = malloc(sizeof(*mgmt_frame));
+                if (mgmt_frame == NULL) {
+                        pthread_mutex_unlock(&raptor_data.mgmt_lock);
+                        ipcp_sdb_release(sdb);
+                        return;
+                }
+
+                memcpy(mgmt_frame->buf, payload, length);
+                memset(mgmt_frame->r_addr, 0, MAC_SIZE);
+                mgmt_frame->len = length;
+                list_add(&mgmt_frame->next, &raptor_data.mgmt_frames);
+                pthread_cond_signal(&raptor_data.mgmt_cond);
+                pthread_mutex_unlock(&raptor_data.mgmt_lock);
+
+                ipcp_sdb_release(sdb);
+        } else {
+                pthread_rwlock_rdlock(&raptor_data.flows_lock);
+
+                fd = raptor_data.ef_to_fd[dsap];
+                if (fd < 0) {
+                        pthread_rwlock_unlock(&raptor_data.flows_lock);
+                        ipcp_sdb_release(sdb);
+                        return;
+                }
+
+                pthread_rwlock_unlock(&raptor_data.flows_lock);
+
+                local_flow_write(fd, idx);
+        }
+}
+
+static void * raptor_ipcp_recv_done_thread(void * o)
+{
+        uint8_t * frames[RAPTOR_BATCH];
+        int count;
+        int i;
+
+        (void)o;
+
+        log_info("Recv_done thread started.");
+
+        while (true) {
+                if (ipcp_get_state() != IPCP_OPERATIONAL)
+                        break;
+
+                count = ioctl(raptor_data.ioctl_fd, IOCTL_RECV_DONE | RAPTOR_BATCH, frames);
+
+                if (count <= 0)
+                        continue;
+
+                for (i = 0; i < count; i++)
+                        raptor_ipcp_recv_frame(frames[i]);
+        }
+
+        log_info("Recv_done thread stopped.");
+        return NULL;
+}
+
+static void * raptor_ipcp_send_thread(void * o)
+{
+        struct timespec      timeout = {0, EVENT_WAIT_TIMEOUT * 1000};
+        int                  fd;
+        struct shm_du_buff * sdb;
+        uint8_t              dsap;
+
+        (void) o;
+
+        log_info("Send thread started.");
+
+        while (flow_event_wait(raptor_data.np1_flows,
+                               raptor_data.fq,
+                               &timeout)) {
+
+                if (ipcp_get_state() != IPCP_OPERATIONAL)
+                        break;
+
+                pthread_rwlock_rdlock(&raptor_data.flows_lock);
+                while ((fd = fqueue_next(raptor_data.fq)) >= 0) {
+                        if (ipcp_flow_read(fd, &sdb)) {
+                                log_err("Bad read from fd %d.", fd);
+                                continue;
+                        }
+
+                        dsap = raptor_data.fd_to_ef[fd].r_sap;
+
+                        raptor_ipcp_send_frame(sdb, dsap);
+                }
+                pthread_rwlock_unlock(&raptor_data.flows_lock);
+        }
+
+        log_info("Send thread stopped.");
+        return NULL;
+}
+
+static void * raptor_ipcp_send_done_thread(void * o)
+{
+        uint8_t * frames[RAPTOR_BATCH];
+        int count;
+        int i;
+
+        (void)o;
+
+        log_info("Send_done thread started.");
+
+        while (true) {
+                if (ipcp_get_state() != IPCP_OPERATIONAL)
+                        break;
+
+                count = ioctl(raptor_data.ioctl_fd, IOCTL_SEND_DONE | RAPTOR_BATCH, frames);
+
+                if (count <= 0)
+                        continue;
+
+                for (i = 0; i < count; i++) {
+                        free(frames[i]);
+                }
+        }
+
+        log_info("Send_done thread stopped.");
+        return NULL;
+}
+
+static void * raptor_ipcp_recv_thread(void * o)
+{
+        struct shm_du_buff * sdb;
+        uint8_t * frames[RAPTOR_BATCH];
+        uint8_t ** head;
+        int needed = 0;
+        int count;
+        int i;
+
+        (void)o;
+
+        log_info("Recv thread started.");
+
+        while (true) {
+                if (ipcp_get_state() != IPCP_OPERATIONAL)
+                        break;
+
+                needed = ioctl(raptor_data.ioctl_fd, IOCTL_RECV_NEED | RAPTOR_BATCH, NULL);
+
+                if (needed <= 0)
+                        continue;
+
+                for (i = 0; i < needed; i++) {
+                        if (ipcp_sdb_reserve(&sdb, RAPTOR_PAGE) < 0) {
+                                log_err("Recv thread: reserve sdb failed. Stopping thread.");
+                                return NULL;
+                        }
+
+                        if ((uint64_t)sdb & (~RAPTOR_PAGE_MASK)) {
+                                log_err("Recv thread: sdb not at offset 0 in page. Stopping thread.");
+                                return NULL;
+                        }
+
+                        frames[i] = shm_du_buff_head(sdb);
+
+                        if ((uint64_t)frames[i] & 0x7) {
+                                log_err("Recv thread: frame not 64bit aligned. Stopping thread.");
+                                return NULL;
+                        }
+                }
+
+                head = frames;
+
+                do {
+                        count = ioctl(raptor_data.ioctl_fd, IOCTL_RECV | needed, head);
+
+                        if (count <= 0)
+                                continue;
+
+                        assert(count <= needed);
+
+                        needed -= count;
+                        head += count;
+
+                } while (needed > 0 && ipcp_get_state() == IPCP_OPERATIONAL);
+        }
+
+        log_info("Recv thread stopped.");
+        return NULL;
+}
+
+static int raptor_ipcp_bootstrap(const struct ipcp_config * conf)
+{
+        assert(conf);
+        assert(conf->type == THIS_TYPE);
+
+        log_info("%s", __FUNCTION__);
+
+        raptor_data.ioctl_fd = open("/dev/raptor", 0);
+
+        if (raptor_data.ioctl_fd < 0) {
+                log_err("Failed to open /dev/raptor.");
+                return -1;
+        }
+
+        ipcp_set_state(IPCP_OPERATIONAL);
+
+        pthread_create(&raptor_data.mgmt_handler,
+                       NULL,
+                       raptor_ipcp_mgmt_handler,
+                       NULL);
+
+        pthread_create(&raptor_data.send_thread,
+                       NULL,
+                       raptor_ipcp_send_thread,
+                       NULL);
+
+        pthread_create(&raptor_data.recv_thread,
+                       NULL,
+                       raptor_ipcp_recv_thread,
+                       NULL);
+
+        pthread_create(&raptor_data.send_done_thread,
+                       NULL,
+                       raptor_ipcp_send_done_thread,
+                       NULL);
+
+        pthread_create(&raptor_data.recv_done_thread,
+                       NULL,
+                       raptor_ipcp_recv_done_thread,
+                       NULL);
+
+        log_dbg("Bootstrapped raptor IPCP with api %d.", getpid());
+
+        return 0;
+}
+
+static int raptor_ipcp_reg(const uint8_t * hash)
+{
+        uint8_t * hash_dup;
+
+        log_info("%s", __FUNCTION__);
+
+        hash_dup = ipcp_hash_dup(hash);
+        if (hash_dup == NULL) {
+                log_err("Failed to duplicate hash.");
+                return -ENOMEM;
+        }
+
+        if (shim_data_reg_add_entry(ipcpi.shim_data, hash_dup)) {
+                log_err("Failed to add " HASH_FMT " to local registry.",
+                        HASH_VAL(hash));
+                free(hash_dup);
+                return -1;
+        }
+
+        log_dbg("Registered " HASH_FMT ".", HASH_VAL(hash));
+
+        return 0;
+}
+
+static int raptor_ipcp_unreg(const uint8_t * hash)
+{
+        log_info("%s", __FUNCTION__);
+
+        shim_data_reg_del_entry(ipcpi.shim_data, hash);
+
+        return 0;
+}
+
+static int raptor_ipcp_query(const uint8_t * hash)
+{
+        uint8_t            r_addr[MAC_SIZE];
+        struct timespec    timeout = {(NAME_QUERY_TIMEOUT / 1000),
+                                      (NAME_QUERY_TIMEOUT % 1000) * MILLION};
+        raptor_msg_t msg = RAPTOR_MSG__INIT;
+        struct dir_query * query;
+        int                ret;
+
+        log_info("%s", __FUNCTION__);
+
+        if (shim_data_dir_has(ipcpi.shim_data, hash))
+                return 0;
+
+        msg.code      = RAPTOR_MSG_CODE__NAME_QUERY_REQ;
+        msg.has_hash  = true;
+        msg.hash.len  = ipcp_dir_hash_len();
+        msg.hash.data = (uint8_t *) hash;
+
+        memset(r_addr, 0xff, MAC_SIZE);
+
+        query = shim_data_dir_query_create(hash);
+        if (query == NULL)
+                return -1;
+
+        pthread_mutex_lock(&ipcpi.shim_data->dir_queries_lock);
+        list_add(&query->next, &ipcpi.shim_data->dir_queries);
+        pthread_mutex_unlock(&ipcpi.shim_data->dir_queries_lock);
+
+        raptor_ipcp_send_mgmt_frame(&msg, r_addr);
+
+        ret = shim_data_dir_query_wait(query, &timeout);
+
+        pthread_mutex_lock(&ipcpi.shim_data->dir_queries_lock);
+        list_del(&query->next);
+        shim_data_dir_query_destroy(query);
+        pthread_mutex_unlock(&ipcpi.shim_data->dir_queries_lock);
+
+        return ret;
+}
+
+static int raptor_ipcp_flow_alloc(int             fd,
+                                   const uint8_t * hash,
+                                   qoscube_t       cube)
+{
+        uint8_t  ssap = 0;
+        uint8_t  r_addr[MAC_SIZE];
+        uint64_t addr = 0;
+
+        log_info("%s", __FUNCTION__);
+
+        log_dbg("Allocating flow to " HASH_FMT ".", HASH_VAL(hash));
+
+        assert(hash);
+
+        if (cube != QOS_CUBE_BE) {
+                log_dbg("Unsupported QoS requested.");
+                return -1;
+        }
+
+        if (!shim_data_dir_has(ipcpi.shim_data, hash)) {
+                log_err("Destination unreachable.");
+                return -1;
+        }
+        addr = shim_data_dir_get_addr(ipcpi.shim_data, hash);
+
+        pthread_rwlock_wrlock(&raptor_data.flows_lock);
+
+        ssap =  bmp_allocate(raptor_data.saps);
+        if (!bmp_is_id_valid(raptor_data.saps, ssap)) {
+                pthread_rwlock_unlock(&raptor_data.flows_lock);
+                return -1;
+        }
+
+        raptor_data.fd_to_ef[fd].sap = ssap;
+        raptor_data.ef_to_fd[ssap]   = fd;
+
+        pthread_rwlock_unlock(&raptor_data.flows_lock);
+
+        memcpy(r_addr, &addr, MAC_SIZE);
+
+        if (raptor_ipcp_sap_alloc(r_addr, ssap, hash, cube) < 0) {
+                pthread_rwlock_wrlock(&raptor_data.flows_lock);
+                bmp_release(raptor_data.saps, raptor_data.fd_to_ef[fd].sap);
+                raptor_data.fd_to_ef[fd].sap = -1;
+                raptor_data.ef_to_fd[ssap]   = -1;
+                pthread_rwlock_unlock(&raptor_data.flows_lock);
+                return -1;
+        }
+
+        flow_set_add(raptor_data.np1_flows, fd);
+
+        log_dbg("Pending flow with fd %d on SAP %d.", fd, ssap);
+
+        return 0;
+}
+
+static int raptor_ipcp_flow_alloc_resp(int fd,
+                                        int response)
+{
+        struct timespec ts    = {0, EVENT_WAIT_TIMEOUT * 1000};
+        struct timespec abstime;
+        uint8_t         ssap  = 0;
+        uint8_t         r_sap = 0;
+        uint8_t         r_addr[MAC_SIZE];
+
+        log_info("%s", __FUNCTION__);
+
+        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);
+
+        pthread_rwlock_wrlock(&raptor_data.flows_lock);
+
+        ssap = bmp_allocate(raptor_data.saps);
+        if (!bmp_is_id_valid(raptor_data.saps, ssap)) {
+                pthread_rwlock_unlock(&raptor_data.flows_lock);
+                return -1;
+        }
+
+        raptor_data.fd_to_ef[fd].sap = ssap;
+        memcpy(r_addr, raptor_data.fd_to_ef[fd].r_addr, MAC_SIZE);
+        r_sap = raptor_data.fd_to_ef[fd].r_sap;
+        raptor_data.ef_to_fd[ssap] = fd;
+
+        pthread_rwlock_unlock(&raptor_data.flows_lock);
+
+        if (raptor_ipcp_sap_alloc_resp(r_addr, ssap, r_sap, response) < 0) {
+                pthread_rwlock_wrlock(&raptor_data.flows_lock);
+                bmp_release(raptor_data.saps, raptor_data.fd_to_ef[fd].sap);
+                pthread_rwlock_unlock(&raptor_data.flows_lock);
+                return -1;
+        }
+
+        flow_set_add(raptor_data.np1_flows, fd);
+
+        log_dbg("Accepted flow, fd %d, SAP %d.", fd, (uint8_t)ssap);
+
+        return 0;
+}
+
+static int raptor_ipcp_flow_dealloc(int fd)
+{
+        uint8_t sap;
+        uint8_t addr[MAC_SIZE];
+
+        log_info("%s", __FUNCTION__);
+
+        ipcp_flow_fini(fd);
+
+        pthread_rwlock_wrlock(&raptor_data.flows_lock);
+
+        flow_set_del(raptor_data.np1_flows, fd);
+
+        sap = raptor_data.fd_to_ef[fd].sap;
+        memcpy(addr, raptor_data.fd_to_ef[fd].r_addr, MAC_SIZE);
+        bmp_release(raptor_data.saps, sap);
+        raptor_data.fd_to_ef[fd].sap = -1;
+        raptor_data.fd_to_ef[fd].r_sap = -1;
+        memset(&raptor_data.fd_to_ef[fd].r_addr, 0, MAC_SIZE);
+
+        raptor_data.ef_to_fd[sap] = -1;
+
+        pthread_rwlock_unlock(&raptor_data.flows_lock);
+
+        flow_dealloc(fd);
+
+        log_dbg("Flow with fd %d deallocated.", fd);
+
+        return 0;
+}
+
+static struct ipcp_ops raptor_ops = {
+        .ipcp_bootstrap       = raptor_ipcp_bootstrap,
+        .ipcp_enroll          = NULL,
+        .ipcp_reg             = raptor_ipcp_reg,
+        .ipcp_unreg           = raptor_ipcp_unreg,
+        .ipcp_query           = raptor_ipcp_query,
+        .ipcp_flow_alloc      = raptor_ipcp_flow_alloc,
+        .ipcp_flow_alloc_resp = raptor_ipcp_flow_alloc_resp,
+        .ipcp_flow_dealloc    = raptor_ipcp_flow_dealloc
+};
+
+int main(int    argc,
+         char * argv[])
+{
+        if (ipcp_init(argc, argv, THIS_TYPE, &raptor_ops) < 0) {
+                ipcp_create_r(getpid(), -1);
+                exit(EXIT_FAILURE);
+        }
+
+        if (raptor_data_init() < 0) {
+                log_err("Failed to init shim-eth-llc data.");
+                ipcp_create_r(getpid(), -1);
+                ipcp_fini();
+                exit(EXIT_FAILURE);
+        }
+
+        if (ipcp_boot() < 0) {
+                log_err("Failed to boot IPCP.");
+                ipcp_create_r(getpid(), -1);
+                raptor_data_fini();
+                ipcp_fini();
+                exit(EXIT_FAILURE);
+        }
+
+        if (ipcp_create_r(getpid(), 0)) {
+                log_err("Failed to notify IRMd we are initialized.");
+                ipcp_set_state(IPCP_NULL);
+                ipcp_shutdown();
+                raptor_data_fini();
+                ipcp_fini();
+                exit(EXIT_FAILURE);
+        }
+
+        log_info("Raptor created.");
+
+        ipcp_shutdown();
+
+        if (ipcp_get_state() == IPCP_SHUTDOWN) {
+                pthread_join(raptor_data.send_thread, NULL);
+                pthread_join(raptor_data.recv_thread, NULL);
+                pthread_join(raptor_data.send_done_thread, NULL);
+                pthread_join(raptor_data.recv_done_thread, NULL);
+                pthread_join(raptor_data.mgmt_handler, NULL);
+        }
+
+        raptor_data_fini();
+
+        ipcp_fini();
+
+        exit(EXIT_SUCCESS);
+}