117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
/* (C) 2011-2012 by Pablo Neira Ayuso <pablo@gnumonks.org>
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* All Rights Reserved.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/netif/channel.h>
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static LLIST_HEAD(channel_list);
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extern struct osmo_chan_type chan_abis_ipa_srv;
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extern struct osmo_chan_type chan_abis_ipa_cli;
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static void *osmo_chan_ctx;
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void osmo_chan_init(void *ctx)
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{
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osmo_chan_ctx = ctx;
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llist_add(&chan_abis_ipa_srv.head, &channel_list);
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llist_add(&chan_abis_ipa_cli.head, &channel_list);
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/* add your new channel type here */
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}
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struct osmo_chan *osmo_chan_create(int type_id, int subtype_id)
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{
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struct osmo_chan_type *cur = NULL;
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int found = 0, found_partial = 0;
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struct osmo_chan *c;
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if (type_id > OSMO_CHAN_MAX) {
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LOGP(DLINP, LOGL_ERROR, "unsupported channel type "
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"number `%u'\n", type_id);
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return NULL;
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}
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if (subtype_id > OSMO_SUBCHAN_MAX) {
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LOGP(DLINP, LOGL_ERROR, "unsupported subchannel type "
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"number `%u'\n", type_id);
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return NULL;
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}
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llist_for_each_entry(cur, &channel_list, head) {
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if (type_id == cur->type && subtype_id == cur->subtype) {
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found = 1;
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break;
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} else if (type_id == cur->type) {
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found_partial = 1;
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break;
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}
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}
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if (!found) {
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LOGP(DLINP, LOGL_ERROR, "unsupported channel type `%s'\n",
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cur->name);
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return NULL;
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}
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if (found_partial) {
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LOGP(DLINP, LOGL_ERROR, "Sorry, channel type `%s' does not "
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"support subtype `%u'\n", cur->name, subtype_id);
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return NULL;
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}
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c = talloc_zero_size(osmo_chan_ctx,
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sizeof(struct osmo_chan) + cur->datasiz);
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if (c == NULL) {
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LOGP(DLINP, LOGL_ERROR, "cannot allocate channel data\n");
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return NULL;
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}
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c->ops = cur;
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if (c->ops->create(c) < 0) {
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LOGP(DLINP, LOGL_ERROR, "cannot create channel\n");
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talloc_free(c);
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return NULL;
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}
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return c;
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}
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void osmo_chan_destroy(struct osmo_chan *c)
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{
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c->ops->destroy(c);
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talloc_free(c);
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}
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int osmo_chan_open(struct osmo_chan *c)
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{
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return c->ops->open(c);
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}
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void osmo_chan_close(struct osmo_chan *c)
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{
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c->ops->close(c);
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}
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int osmo_chan_enqueue(struct osmo_chan *c, struct msgb *msg)
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{
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return c->ops->enqueue(c, msg);
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}
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