diff options
Diffstat (limited to 'net/sctp/command.c')
| -rw-r--r-- | net/sctp/command.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/net/sctp/command.c b/net/sctp/command.c new file mode 100644 index 000000000000..3ff804757f4a --- /dev/null +++ b/net/sctp/command.c @@ -0,0 +1,81 @@ +/* SCTP kernel reference Implementation Copyright (C) 1999-2001 + * Cisco, Motorola, and IBM + * Copyright 2001 La Monte H.P. Yarroll + * + * This file is part of the SCTP kernel reference Implementation + * + * These functions manipulate sctp command sequences. + * + * The SCTP reference implementation 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, or (at your option) + * any later version. + * + * The SCTP reference implementation 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 GNU CC; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * Please send any bug reports or fixes you make to the + * email address(es): + * lksctp developers <lksctp-developers@lists.sourceforge.net> + * + * Or submit a bug report through the following website: + * http://www.sf.net/projects/lksctp + * + * Written or modified by: + * La Monte H.P. Yarroll <piggy@acm.org> + * Karl Knutson <karl@athena.chicago.il.us> + * + * Any bugs reported given to us we will try to fix... any fixes shared will + * be incorporated into the next SCTP release. + */ + +#include <linux/types.h> +#include <net/sctp/sctp.h> +#include <net/sctp/sm.h> + +/* Initialize a block of memory as a command sequence. */ +int sctp_init_cmd_seq(sctp_cmd_seq_t *seq) +{ + memset(seq, 0, sizeof(sctp_cmd_seq_t)); + return 1; /* We always succeed. */ +} + +/* Add a command to a sctp_cmd_seq_t. + * Return 0 if the command sequence is full. + */ +int sctp_add_cmd(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj) +{ + if (seq->next_free_slot >= SCTP_MAX_NUM_COMMANDS) + goto fail; + + seq->cmds[seq->next_free_slot].verb = verb; + seq->cmds[seq->next_free_slot++].obj = obj; + + return 1; + +fail: + return 0; +} + +/* Return the next command structure in a sctp_cmd_seq. + * Returns NULL at the end of the sequence. + */ +sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq) +{ + sctp_cmd_t *retval = NULL; + + if (seq->next_cmd < seq->next_free_slot) + retval = &seq->cmds[seq->next_cmd++]; + + return retval; +} + |