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authorSander Vrijders <sander.vrijders@ugent.be>2017-04-27 19:13:29 +0200
committerSander Vrijders <sander.vrijders@ugent.be>2017-04-28 13:08:17 +0200
commit9177b0f3f72203cb6e18ee59c98b531a698d7f19 (patch)
tree524e72cf30f94613df32f06d5ec7bb9041fd11dc /src/ipcpd/normal/frct_pci.c
parent1f8f2ebe3bb385593755b69bd264ff5f831a22ae (diff)
downloadouroboros-9177b0f3f72203cb6e18ee59c98b531a698d7f19.tar.gz
ouroboros-9177b0f3f72203cb6e18ee59c98b531a698d7f19.zip
ipcpd: normal: Split connection establishment
Connection establishment was done at the same time as flow allocation. This splits it more cleanly, and allows to re-use the DT AE for other purposes.
Diffstat (limited to 'src/ipcpd/normal/frct_pci.c')
-rw-r--r--src/ipcpd/normal/frct_pci.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/ipcpd/normal/frct_pci.c b/src/ipcpd/normal/frct_pci.c
new file mode 100644
index 00000000..a13df2f4
--- /dev/null
+++ b/src/ipcpd/normal/frct_pci.c
@@ -0,0 +1,102 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Protocol Control Information for FRCT
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <ouroboros/config.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/rib.h>
+
+#include "dt_const.h"
+#include "frct_pci.h"
+#include "ribconfig.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+struct {
+ struct dt_const dtc;
+ size_t head_size;
+
+ /* offsets */
+ size_t seqno_o;
+} frct_pci_info;
+
+int frct_pci_init(void)
+{
+ /* read dt constants from the RIB */
+ if (rib_read(BOOT_PATH "/dt/const/cep_id_size",
+ &frct_pci_info.dtc.cep_id_size,
+ sizeof(frct_pci_info.dtc.cep_id_size)) < 0 ||
+ rib_read(BOOT_PATH "/dt/const/seqno_size",
+ &frct_pci_info.dtc.seqno_size,
+ sizeof(frct_pci_info.dtc.seqno_size)) < 0)
+ return -1;
+
+ frct_pci_info.seqno_o = frct_pci_info.dtc.cep_id_size;
+
+ frct_pci_info.head_size = frct_pci_info.seqno_o +
+ frct_pci_info.dtc.seqno_size;
+
+ return 0;
+}
+
+void frct_pci_fini(void) {
+ return;
+}
+
+int frct_pci_ser(struct shm_du_buff * sdb,
+ struct frct_pci * frct_pci)
+{
+ uint8_t * head;
+
+ assert(sdb);
+ assert(frct_pci);
+
+ head = shm_du_buff_head_alloc(sdb, frct_pci_info.head_size);
+ if (head == NULL)
+ return -EPERM;
+
+ /* FIXME: Add check and operations for Big Endian machines */
+ memcpy(head, &frct_pci->dst_cep_id, frct_pci_info.dtc.cep_id_size);
+ memcpy(head + frct_pci_info.seqno_o, &frct_pci->seqno,
+ frct_pci_info.dtc.seqno_size);
+
+ return 0;
+}
+
+void frct_pci_des(struct shm_du_buff * sdb,
+ struct frct_pci * frct_pci)
+{
+ uint8_t * head;
+
+ assert(sdb);
+ assert(frct_pci);
+
+ head = shm_du_buff_head(sdb);
+
+ /* FIXME: Add check and operations for Big Endian machines */
+ memcpy(&frct_pci->dst_cep_id, head, frct_pci_info.dtc.cep_id_size);
+ memcpy(&frct_pci->seqno, head + frct_pci_info.seqno_o,
+ frct_pci_info.dtc.seqno_size);
+
+ shm_du_buff_head_release(sdb, frct_pci_info.head_size);
+}