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authorDimitri Staessens <dimitri.staessens@intec.ugent.be>2016-02-26 14:35:50 +0100
committerDimitri Staessens <dimitri.staessens@intec.ugent.be>2016-02-26 14:35:50 +0100
commit62eba345ce0ab3fb58e6998261da20bbc2f5cc3a (patch)
tree4b301ea4d996ad573aa47f2ab30545f0f6a76f86 /src/ipcpd/pci.c
parent7fe7ee2b190128cadee38664c59a595fac1fd3b1 (diff)
downloadouroboros-62eba345ce0ab3fb58e6998261da20bbc2f5cc3a.tar.gz
ouroboros-62eba345ce0ab3fb58e6998261da20bbc2f5cc3a.zip
ipcp: PCI structure
ipcpd/dt_const.h: ipcp-internal datastructures for dtp and dip constants ipcpd/pci.h : header for pci structure ipcpd/pci.c : pci structure ipcpd : updated makefile commit not fully tested yet
Diffstat (limited to 'src/ipcpd/pci.c')
-rw-r--r--src/ipcpd/pci.c143
1 files changed, 96 insertions, 47 deletions
diff --git a/src/ipcpd/pci.c b/src/ipcpd/pci.c
index 1987957a..1fd263d3 100644
--- a/src/ipcpd/pci.c
+++ b/src/ipcpd/pci.c
@@ -21,78 +21,127 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include "pci.h"
+#include <malloc.h>
+#include <errno.h>
+
+#define head_size(a, b) a.addr_size * 2 + \
+ a.cep_id_size * 2 + \
+ a.pdu_length_size + \
+ a.seqno_size + \
+ a.qos_id_size + \
+ b.ttl_size
+#define tail_size(b) b.chk_size
+
+
struct pci {
- uint8_t * src_addr;
+ /* head */
uint8_t * dst_addr;
+ uint8_t * src_addr;
+ uint8_t * dst_cep_id;
+ uint8_t * src_cep_id;
uint8_t * pdu_length;
+ uint8_t * ttl; uint8_t * seqno;
uint8_t * qos_id;
- uint8_t * seqnr;
- uint8_t * pad_h;
- uint8_t * pad_t;
- uint8_t head_sz;
- uint8_t tail_sz;
+ uint8_t * chk;
+
+ du_buff_t * dub;
+
+ struct ipcp_dtp_const dtpc;
+ struct ipcp_dup_const dupc;
};
-pci_t * pci_create(struct dtp_const * dtc)
+pci_t * pci_create(du_buff_t * dub,
+ const struct ipcp_dtp_const dtpc,
+ const struct ipcp_dup_const dupc)
{
- int i = 0;
- if (dtc == NULL)
+ if (dub == NULL) {
+ LOG_DBGF("Bogus input. Bugging out.");
return NULL;
+ }
- struct pci * p = malloc(sizeof pci);
+ struct pci * p = malloc(sizeof *p);
if (p == NULL)
- return NULL:
+ return NULL;
+
+ p->dub = dub;
+/*
+ p->dtpc = malloc( sizeof *(p->dtpc));
+ if (p->dtpc == NULL)
+ return NULL;
+
+ p->dupc = malloc( sizeof *(p->dupc));
+ if (p->dupc == NULL)
+ return NULL;
+*/
+ p->dtpc = dtpc;
+ p->dupc = dupc;
- p->src_addr =NULL;
p->dst_addr = NULL;
+ p->src_addr =NULL;
+ p->dst_cep_id = NULL;
+ p->src_cep_id = NULL;
p->pdu_length = NULL;
+ p->ttl = NULL;
+ p->seqno = NULL;
p->qos_id = NULL;
- p->seqnr = NULL;
- p->pad_h = NULL;
- p->pad_t = NULL;
-
- head_sz = 0;
- tail_sz = 0;
+ p->chk = NULL;
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)
+void pci_destroy(pci_t * pci)
{
- 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);
+ free (pci);
+}
- LOG_MISSING();
+int pci_init(pci_t * pci)
+{
+ if (pci == NULL) {
+ LOG_DBGF("Bogus input. Bugging out.");
+ return -EINVAL;
+ }
+
+ uint8_t * pci_head = du_buff_head_alloc(pci->dub,
+ head_size(pci->dtpc,pci->dupc));
+ uint8_t * pci_tail = du_buff_tail_alloc(pci->dub, tail_size(pci->dupc));
+
+ if (pci_head == NULL) {
+ LOG_DBG("Failed to allocate space for PCI at head.");
+ return -ENOBUFS;
+ }
+
+ if (pci_tail == NULL) {
+ LOG_DBG("Failed to allocate space for PCI at tail.");
+ return -ENOBUFS;
+ }
+
+ pci->dst_addr = pci_head;
+ pci->src_addr = (pci_head += pci->dtpc.addr_size);
+ pci->dst_cep_id = (pci_head += pci->dtpc.addr_size);
+ pci->src_cep_id = (pci_head += pci->dtpc.cep_id_size);
+ pci->pdu_length = (pci_head += pci->dtpc.cep_id_size);
+ pci->ttl = (pci_head += pci->dtpc.pdu_length_size);
+ pci->seqno = (pci_head += pci->dupc.ttl_size);
+ pci->qos_id = (pci_head += pci->dtpc.seqno_size);
+
+ pci->chk = (pci_tail);
+
+ return 0;
}
-void pci_destroy(pci_t * pci)
+void pci_release(pci_t * pci)
{
- free (pci);
+ if (pci == NULL)
+ return;
+
+ if (pci->dub == NULL)
+ return;
+
+ du_buff_head_release(pci->dub, head_size(pci->dtpc, pci->dupc));
+ du_buff_tail_release(pci->dub, tail_size(pci->dupc));
}