ipcpd: Rename hashtable to pft

This makes the hashtable more tailored to a packet forwarding table
(PFT). In the end not much of a change was needed, but now it's clear
the pft maps a destination address to a list of (outgoing) fds.

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

1 files changed, 55 insertions, 0 deletions

diff --git a/src/ipcpd/unicast/pol/pft.h b/src/ipcpd/unicast/pol/pft.h
new file mode 100644
index 00000000..aed4dba8
--- /dev/null
+++ b/src/ipcpd/unicast/pol/pft.h
@@ -0,0 +1,55 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2020
+ *
+ * Packet forwarding table (PFT) with chaining on collisions
+ *
+ *    Dimitri Staessens <[email protected]>
+ *    Sander Vrijders   <[email protected]>
+ *
+ * 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/.
+ */
+
+#ifndef OUROBOROS_PFT_H
+#define OUROBOROS_PFT_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+struct pft;
+
+/* Buckets is rounded up to the nearest power of 2 */
+struct pft * pft_create(uint64_t buckets,
+                        bool     hash_key);
+
+void         pft_destroy(struct pft * table);
+
+void         pft_flush(struct pft * table);
+
+/* Passes ownership of the block of memory */
+int          pft_insert(struct pft * pft,
+                        uint64_t     dst,
+                        int *        fds,
+                        size_t       len);
+
+/* The block of memory returned is no copy */
+int          pft_lookup(struct pft * pft,
+                        uint64_t     dst,
+                        int **       fds,
+                        size_t *     len);
+
+int          pft_delete(struct pft * pft,
+                        uint64_t     dst);
+
+#endif /* OUROBOROS_PFT_H */