diff options
author | Alberto Gonzalez Iniesta <agi@inittab.org> | 2012-11-05 16:28:10 +0100 |
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committer | Alberto Gonzalez Iniesta <agi@inittab.org> | 2012-11-05 16:28:10 +0100 |
commit | d213c4e5576e2fd601679e0d7b2fb1262b807111 (patch) | |
tree | 5f0cc82bd0f11fb13b385417604d04c751245a92 /src/openvpn/mbuf.h | |
parent | 79c8d3ef7a938f86472e549ef64e1fb820dc80c4 (diff) | |
parent | 8dd0350e1607aa30f7a043c8d5ec7a7eeb874115 (diff) |
Merge tag 'upstream/2.3_rc1'
Upstream version 2.3_rc1
Diffstat (limited to 'src/openvpn/mbuf.h')
-rw-r--r-- | src/openvpn/mbuf.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/openvpn/mbuf.h b/src/openvpn/mbuf.h new file mode 100644 index 0000000..a0de679 --- /dev/null +++ b/src/openvpn/mbuf.h @@ -0,0 +1,109 @@ +/* + * OpenVPN -- An application to securely tunnel IP networks + * over a single TCP/UDP port, with support for SSL/TLS-based + * session authentication and key exchange, + * packet encryption, packet authentication, and + * packet compression. + * + * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net> + * + * 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 (see the file COPYING included with this + * distribution); if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef MBUF_H +#define MBUF_H + +/* + * Handle both multicast and broadcast functions. + */ + +#if P2MP + +/* define this to enable special test mode */ +/*#define MBUF_TEST*/ + +#include "basic.h" +#include "buffer.h" + +struct multi_instance; + +#define MBUF_INDEX(head, offset, size) (((head) + (offset)) & ((size)-1)) + +struct mbuf_buffer +{ + struct buffer buf; + int refcount; + +# define MF_UNICAST (1<<0) + unsigned int flags; +}; + +struct mbuf_item +{ + struct mbuf_buffer *buffer; + struct multi_instance *instance; +}; + +struct mbuf_set +{ + unsigned int head; + unsigned int len; + unsigned int capacity; + unsigned int max_queued; + struct mbuf_item *array; +}; + +struct mbuf_set *mbuf_init (unsigned int size); +void mbuf_free (struct mbuf_set *ms); + +struct mbuf_buffer *mbuf_alloc_buf (const struct buffer *buf); +void mbuf_free_buf (struct mbuf_buffer *mb); + +void mbuf_add_item (struct mbuf_set *ms, const struct mbuf_item *item); + +bool mbuf_extract_item (struct mbuf_set *ms, struct mbuf_item *item); + +void mbuf_dereference_instance (struct mbuf_set *ms, struct multi_instance *mi); + +static inline bool +mbuf_defined (const struct mbuf_set *ms) +{ + return ms && ms->len; +} + +static inline bool +mbuf_len (const struct mbuf_set *ms) +{ + return ms->len; +} + +static inline int +mbuf_maximum_queued (const struct mbuf_set *ms) +{ + return (int) ms->max_queued; +} + +static inline struct multi_instance * +mbuf_peek (struct mbuf_set *ms) +{ + struct multi_instance *mbuf_peek_dowork (struct mbuf_set *ms); + if (mbuf_defined (ms)) + return mbuf_peek_dowork (ms); + else + return NULL; +} + +#endif +#endif |