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authorDimitri Staessens <dimitri.staessens@intec.ugent.be>2016-02-26 03:58:37 +0100
committerDimitri Staessens <dimitri.staessens@intec.ugent.be>2016-02-26 03:58:37 +0100
commit4424cf627d0bb45b65128ccfd8f2a7e5739b3917 (patch)
treeb5de29bebc7f5a21eb47aac063c22143d9572962
parent93e08315402c586a73fe3b9335e8d669ffc6511a (diff)
downloadouroboros-4424cf627d0bb45b65128ccfd8f2a7e5739b3917.tar.gz
ouroboros-4424cf627d0bb45b65128ccfd8f2a7e5739b3917.zip
ipcps: initial code for pci structure
-rw-r--r--src/ipcpd/pci.c98
-rw-r--r--src/ipcpd/pci.h45
2 files changed, 143 insertions, 0 deletions
diff --git a/src/ipcpd/pci.c b/src/ipcpd/pci.c
new file mode 100644
index 00000000..1987957a
--- /dev/null
+++ b/src/ipcpd/pci.c
@@ -0,0 +1,98 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Protocol Control Information
+ *
+ * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ * Sander Vrijders <sander.vrijders@intec.ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+
+struct pci {
+ uint8_t * src_addr;
+ uint8_t * dst_addr;
+ uint8_t * pdu_length;
+ uint8_t * qos_id;
+ uint8_t * seqnr;
+ uint8_t * pad_h;
+ uint8_t * pad_t;
+
+ uint8_t head_sz;
+ uint8_t tail_sz;
+
+};
+
+pci_t * pci_create(struct dtp_const * dtc)
+{
+ int i = 0;
+
+ if (dtc == NULL)
+ return NULL;
+
+ struct pci * p = malloc(sizeof pci);
+
+ if (p == NULL)
+ return NULL:
+
+ p->src_addr =NULL;
+ p->dst_addr = NULL;
+ p->pdu_length = NULL;
+ p->qos_id = NULL;
+ p->seqnr = NULL;
+ p->pad_h = NULL;
+ p->pad_t = NULL;
+
+ head_sz = 0;
+ tail_sz = 0;
+
+ return p;
+}
+
+/* policy... one could reorder the data fields
+ exercise left to the idiot that cares */
+int * pci_init(pci_t * pci,
+ d_buff_t * dub,
+ struct dtp_const * dtc,
+ struct dup_const * dupc)
+{
+ uint8_t * pci_head;
+ uint8_t * pci_tail;
+
+ /* nastiness ahead, all members are uint8_t's */
+ uint8_t * n = (uint8_t *) dtc;
+ for (i=0; i < sizeof *dtc; ++i)
+ n[i] & 0x80 ? tail_sz += n[i] & 0x80:
+ head_sz += n[i];
+ head_sz += n[0] & 0x80 ? n[0] : 0; /* dst_addr */
+
+ n = (uint8_t *) dupc;
+ for (i=0; i < sizeof *dupc; ++i)
+ n[i] & 0x80 ? tail_sz += n[i] & 0x80 :
+ head_sz += n[i];
+ tail_sz += n[0] & 0x80 ? n[0] : 0; /* dst_addr */
+
+ /* end of nastiness */
+
+ pci_head = du_buff_head_alloc(dub, head_sz);
+ pci_tail = du_buff_tail_alloc(dub, tail_sz);
+
+ LOG_MISSING();
+}
+
+void pci_destroy(pci_t * pci)
+{
+ free (pci);
+}
diff --git a/src/ipcpd/pci.h b/src/ipcpd/pci.h
new file mode 100644
index 00000000..936a1b1b
--- /dev/null
+++ b/src/ipcpd/pci.h
@@ -0,0 +1,45 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Protocol Control Information
+ *
+ * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
+ * Sander Vrijders <sander.vrijders@intec.ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+
+#ifndef OUROBOROS_IPCP_PCI_H
+#define OUROBOROS_IPCP_PCI_H
+#endif
+
+#include "ouroboros/common.h"
+#include "ouroboros/du_buff.h"
+
+struct pci;
+
+typedef struct pci pci_t;
+
+pci_t * pci_create(struct dtp_const * dtc);
+void pci_destroy(pci_t * pci);
+
+int pci_init(pci_t * pci,
+ du_buff_t * dub,
+ struct dtp_const * dtc,
+ struct dup_const * dupc);
+
+int pci_release(du_buff_t dub);
+
+#endif /* OUROBOROS_IPCP_PCI_H */