diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/irda/ircomm/ircomm_event.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/irda/ircomm/ircomm_event.c')
-rw-r--r-- | kernel/net/irda/ircomm/ircomm_event.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/kernel/net/irda/ircomm/ircomm_event.c b/kernel/net/irda/ircomm/ircomm_event.c new file mode 100644 index 000000000..b0730ac9f --- /dev/null +++ b/kernel/net/irda/ircomm/ircomm_event.c @@ -0,0 +1,246 @@ +/********************************************************************* + * + * Filename: ircomm_event.c + * Version: 1.0 + * Description: IrCOMM layer state machine + * Status: Stable + * Author: Dag Brattli <dagb@cs.uit.no> + * Created at: Sun Jun 6 20:33:11 1999 + * Modified at: Sun Dec 12 13:44:32 1999 + * Modified by: Dag Brattli <dagb@cs.uit.no> + * + * Copyright (c) 1999 Dag Brattli, All Rights Reserved. + * + * This program 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 of + * the License, or (at your option) any later version. + * + * 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, see <http://www.gnu.org/licenses/>. + * + ********************************************************************/ + +#include <linux/proc_fs.h> +#include <linux/init.h> + +#include <net/irda/irda.h> +#include <net/irda/irlmp.h> +#include <net/irda/iriap.h> +#include <net/irda/irttp.h> +#include <net/irda/irias_object.h> + +#include <net/irda/ircomm_core.h> +#include <net/irda/ircomm_event.h> + +static int ircomm_state_idle(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info); +static int ircomm_state_waiti(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info); +static int ircomm_state_waitr(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info); +static int ircomm_state_conn(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info); + +const char *const ircomm_state[] = { + "IRCOMM_IDLE", + "IRCOMM_WAITI", + "IRCOMM_WAITR", + "IRCOMM_CONN", +}; + +static const char *const ircomm_event[] __maybe_unused = { + "IRCOMM_CONNECT_REQUEST", + "IRCOMM_CONNECT_RESPONSE", + "IRCOMM_TTP_CONNECT_INDICATION", + "IRCOMM_LMP_CONNECT_INDICATION", + "IRCOMM_TTP_CONNECT_CONFIRM", + "IRCOMM_LMP_CONNECT_CONFIRM", + + "IRCOMM_LMP_DISCONNECT_INDICATION", + "IRCOMM_TTP_DISCONNECT_INDICATION", + "IRCOMM_DISCONNECT_REQUEST", + + "IRCOMM_TTP_DATA_INDICATION", + "IRCOMM_LMP_DATA_INDICATION", + "IRCOMM_DATA_REQUEST", + "IRCOMM_CONTROL_REQUEST", + "IRCOMM_CONTROL_INDICATION", +}; + +static int (*state[])(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info) = +{ + ircomm_state_idle, + ircomm_state_waiti, + ircomm_state_waitr, + ircomm_state_conn, +}; + +/* + * Function ircomm_state_idle (self, event, skb) + * + * IrCOMM is currently idle + * + */ +static int ircomm_state_idle(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info) +{ + int ret = 0; + + switch (event) { + case IRCOMM_CONNECT_REQUEST: + ircomm_next_state(self, IRCOMM_WAITI); + ret = self->issue.connect_request(self, skb, info); + break; + case IRCOMM_TTP_CONNECT_INDICATION: + case IRCOMM_LMP_CONNECT_INDICATION: + ircomm_next_state(self, IRCOMM_WAITR); + ircomm_connect_indication(self, skb, info); + break; + default: + pr_debug("%s(), unknown event: %s\n", __func__ , + ircomm_event[event]); + ret = -EINVAL; + } + return ret; +} + +/* + * Function ircomm_state_waiti (self, event, skb) + * + * The IrCOMM user has requested an IrCOMM connection to the remote + * device and is awaiting confirmation + */ +static int ircomm_state_waiti(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info) +{ + int ret = 0; + + switch (event) { + case IRCOMM_TTP_CONNECT_CONFIRM: + case IRCOMM_LMP_CONNECT_CONFIRM: + ircomm_next_state(self, IRCOMM_CONN); + ircomm_connect_confirm(self, skb, info); + break; + case IRCOMM_TTP_DISCONNECT_INDICATION: + case IRCOMM_LMP_DISCONNECT_INDICATION: + ircomm_next_state(self, IRCOMM_IDLE); + ircomm_disconnect_indication(self, skb, info); + break; + default: + pr_debug("%s(), unknown event: %s\n", __func__ , + ircomm_event[event]); + ret = -EINVAL; + } + return ret; +} + +/* + * Function ircomm_state_waitr (self, event, skb) + * + * IrCOMM has received an incoming connection request and is awaiting + * response from the user + */ +static int ircomm_state_waitr(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info) +{ + int ret = 0; + + switch (event) { + case IRCOMM_CONNECT_RESPONSE: + ircomm_next_state(self, IRCOMM_CONN); + ret = self->issue.connect_response(self, skb); + break; + case IRCOMM_DISCONNECT_REQUEST: + ircomm_next_state(self, IRCOMM_IDLE); + ret = self->issue.disconnect_request(self, skb, info); + break; + case IRCOMM_TTP_DISCONNECT_INDICATION: + case IRCOMM_LMP_DISCONNECT_INDICATION: + ircomm_next_state(self, IRCOMM_IDLE); + ircomm_disconnect_indication(self, skb, info); + break; + default: + pr_debug("%s(), unknown event = %s\n", __func__ , + ircomm_event[event]); + ret = -EINVAL; + } + return ret; +} + +/* + * Function ircomm_state_conn (self, event, skb) + * + * IrCOMM is connected to the peer IrCOMM device + * + */ +static int ircomm_state_conn(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info) +{ + int ret = 0; + + switch (event) { + case IRCOMM_DATA_REQUEST: + ret = self->issue.data_request(self, skb, 0); + break; + case IRCOMM_TTP_DATA_INDICATION: + ircomm_process_data(self, skb); + break; + case IRCOMM_LMP_DATA_INDICATION: + ircomm_data_indication(self, skb); + break; + case IRCOMM_CONTROL_REQUEST: + /* Just send a separate frame for now */ + ret = self->issue.data_request(self, skb, skb->len); + break; + case IRCOMM_TTP_DISCONNECT_INDICATION: + case IRCOMM_LMP_DISCONNECT_INDICATION: + ircomm_next_state(self, IRCOMM_IDLE); + ircomm_disconnect_indication(self, skb, info); + break; + case IRCOMM_DISCONNECT_REQUEST: + ircomm_next_state(self, IRCOMM_IDLE); + ret = self->issue.disconnect_request(self, skb, info); + break; + default: + pr_debug("%s(), unknown event = %s\n", __func__ , + ircomm_event[event]); + ret = -EINVAL; + } + return ret; +} + +/* + * Function ircomm_do_event (self, event, skb) + * + * Process event + * + */ +int ircomm_do_event(struct ircomm_cb *self, IRCOMM_EVENT event, + struct sk_buff *skb, struct ircomm_info *info) +{ + pr_debug("%s: state=%s, event=%s\n", __func__ , + ircomm_state[self->state], ircomm_event[event]); + + return (*state[self->state])(self, event, skb, info); +} + +/* + * Function ircomm_next_state (self, state) + * + * Switch state + * + */ +void ircomm_next_state(struct ircomm_cb *self, IRCOMM_STATE state) +{ + self->state = state; + + pr_debug("%s: next state=%s, service type=%d\n", __func__ , + ircomm_state[self->state], self->service_type); +} |