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net: ieee802154: Add support for requesting ACK on packets

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This is meant if only one needs reliability when sending non-TCP packets
(as TCP would make is redundant).

Change-Id: I7dc605094b422a750424c3498d18f32d809d23a8
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2016-10-06 18:18:47 +02:00 committed by Jukka Rissanen
parent b986c7681e
commit d02fe29616
4 changed files with 79 additions and 6 deletions
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30
include/net/yaip/ieee802154.h
View file

@ -22,6 +22,8 @@
#ifndef __IEEE802154_H__
#define __IEEE802154_H__
#include <net/net_mgmt.h>
/* This not meant to be used by any code but 802.15.4 L2 stack */
struct ieee802154_context {
uint16_t pan_id;
@ -29,7 +31,33 @@ struct ieee802154_context {
uint8_t sequence;
struct nano_sem ack_lock;
uint8_t ack_received : 1;
uint8_t _unused : 7;
uint8_t ack_requested : 1;
uint8_t _unused : 6;
} __packed;
/* Management part definitions */
#define _NET_IEEE802154_LAYER NET_MGMT_LAYER_L2
#define _NET_IEEE802154_CODE 0x154
#define _NET_IEEE802154_BASE (NET_MGMT_IFACE_BIT | \
NET_MGMT_LAYER(_NET_IEEE802154_LAYER) |\
NET_MGMT_LAYER_CODE(_NET_IEEE802154_CODE))
enum net_request_ieee802154_cmd {
NET_REQUEST_IEEE802154_CMD_SET_ACK = 1,
NET_REQUEST_IEEE802154_CMD_UNSET_ACK,
};
#define NET_REQUEST_IEEE802154_SET_ACK \
(_NET_IEEE802154_BASE | NET_REQUEST_IEEE802154_CMD_SET_ACK)
NET_MGMT_DEFINE_REQUEST_HANDLER(NET_REQUEST_IEEE802154_SET_ACK);
#define NET_REQUEST_IEEE802154_UNSET_ACK \
(_NET_IEEE802154_BASE | NET_REQUEST_IEEE802154_CMD_UNSET_ACK)
NET_MGMT_DEFINE_REQUEST_HANDLER(NET_REQUEST_IEEE802154_UNSET_ACK);
#endif /* __IEEE802154_H__ */

3
net/yaip/l2/ieee802154/Makefile
View file

@ -1,8 +1,9 @@
ccflags-y += -I${srctree}/net/yaip
obj-$(CONFIG_NET_L2_IEEE802154) += ieee802154.o \
ieee802154_frame.o \
ieee802154_frame.o
obj-$(CONFIG_NET_L2_IEEE802154_MGMT) += ieee802154_mgmt.o
obj-$(CONFIG_NET_L2_IEEE802154_RADIO_ALOHA) += ieee802154_radio_aloha.o
obj-$(CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA) += ieee802154_radio_csma_ca.o

9
net/yaip/l2/ieee802154/ieee802154_frame.c
View file

@ -248,7 +248,8 @@ uint16_t ieee802154_compute_header_size(struct net_if *iface,
return hdr_len;
}
static inline struct ieee802154_fcf_seq *generate_fcf_grounds(uint8_t **p_buf)
static inline struct ieee802154_fcf_seq *generate_fcf_grounds(uint8_t **p_buf,
uint8_t ack)
{
struct ieee802154_fcf_seq *fs;
@ -256,7 +257,7 @@ static inline struct ieee802154_fcf_seq *generate_fcf_grounds(uint8_t **p_buf)
fs->fc.security_enabled = 0;
fs->fc.frame_pending = 0;
fs->fc.ar = 0;
fs->fc.ar = ack;
fs->fc.pan_id_comp = 0;
fs->fc.reserved = 0;
/** We support version 2006 only for now */
@ -391,7 +392,7 @@ bool ieee802154_create_data_frame(struct net_if *iface,
struct ieee802154_frame_params params;
struct ieee802154_fcf_seq *fs;
fs = generate_fcf_grounds(&p_buf);
fs = generate_fcf_grounds(&p_buf, ctx->ack_requested);
fs->fc.frame_type = IEEE802154_FRAME_TYPE_DATA;
fs->sequence = ctx->sequence++;
@ -427,7 +428,7 @@ bool ieee802154_create_ack_frame(struct net_if *iface,
return false;
}
fs = generate_fcf_grounds(&p_buf);
fs = generate_fcf_grounds(&p_buf, 0);
fs->fc.frame_type = IEEE802154_FRAME_TYPE_ACK;
fs->sequence = seq;

43
net/yaip/l2/ieee802154/ieee802154_mgmt.c Normal file
View file

@ -0,0 +1,43 @@
/*
* Copyright (c) 2016 Intel Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <net/net_if.h>
#include <net/ieee802154.h>
static int ieee802154_set_ack(uint32_t mgmt_request, struct net_if *iface,
void *data, size_t len)
{
struct ieee802154_context *ctx = net_if_l2_data(iface);
ARG_UNUSED(data);
ARG_UNUSED(len);
if (mgmt_request == NET_REQUEST_IEEE802154_SET_ACK) {
ctx->ack_requested = true;
} else if (mgmt_request == NET_REQUEST_IEEE802154_UNSET_ACK) {
ctx->ack_requested = false;
}
return 0;
}
NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_SET_ACK,
ieee802154_set_ack);
NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_UNSET_ACK,
ieee802154_set_ack);