lib: Use packed struct for FRCT header access

This replaces the variable FRCT header with a packed struct, which
significantly simplifies the implementation. The shm_du_buff calls to
release the head/tail are updated to return a pointer to the original
head or the new tail (in symmetry to the alloc calls, which return a
pointer to the new head and old tail), so that it immediately points
to the structure that is needed.

The frct_pci sources are removed and frct is now fully in the frct.c
source file.

Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>

1 files changed, 0 insertions, 67 deletions

diff --git a/src/lib/frct_pci.h b/src/lib/frct_pci.h
deleted file mode 100644
index fbbfd354..00000000
--- a/src/lib/frct_pci.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * Protocol Control Information of FRCT
- *
- *    Dimitri Staessens <[email protected]>
- *    Sander Vrijders   <[email protected]>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., http://www.fsf.org/about/contact/.
- */
-
-#ifndef OUROBOROS_LIB_FRCT_PCI_H
-#define OUROBOROS_LIB_FRCT_PCI_H
-
-#include <ouroboros/shm_du_buff.h>
-
-#include <stdint.h>
-#include <stdbool.h>
-
-struct frct_pci {
-        /* Present in every PDU. */
-        uint8_t  type;
-        uint8_t  flags;
-        uint64_t seqno;
-
-        /* Present in config PDU. */
-        uint16_t cflags;
-
-        /* Present in flow control PDU. */
-        uint64_t lwe;
-        uint64_t rwe;
-};
-
-enum pdu_types {
-        PDU_TYPE_DATA        = 0x01,
-        PDU_TYPE_ACK         = 0x02,
-        PDU_TYPE_FC          = 0x04,
-        PDU_TYPE_ACK_AND_FC  = (PDU_TYPE_ACK | PDU_TYPE_FC),
-        PDU_TYPE_RENDEZ_VOUS = 0x08,
-        PDU_TYPE_CONFIG      = 0x10
-};
-
-enum data_flags {
-        FLAG_DATA_RUN       = 0x01,
-        FLAG_MORE_FRAGMENTS = 0x02
-};
-
-int frct_pci_ser(struct shm_du_buff * sdb,
-                 struct frct_pci *    pci,
-                 bool                 error_check);
-
-int frct_pci_des(struct shm_du_buff * sdb,
-                 struct frct_pci *    pci,
-                 bool                 error_check);
-
-#endif /* OUROBOROS_LIB_FRCT_PCI_H */