framer-802154: introduce framer_802154_setup_params()
This commit is contained in:
Yasuyuki Tanaka
Yasuyuki Tanaka
parent
b412183c67
commit
a35c3cad08
@ -43,7 +43,6 @@
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#include "lib/random.h"
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#include <string.h>
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/* Log configuration */
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#include "sys/log.h"
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#define LOG_MODULE "Frame 15.4"
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#define LOG_LEVEL LOG_LEVEL_FRAMER
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@ -75,93 +74,32 @@ create_frame(int type, int do_create)
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mac_dsn = random_rand() & 0xff;
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}
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/* Build the FCF. */
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params.fcf.frame_type = packetbuf_attr(PACKETBUF_ATTR_FRAME_TYPE);
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params.fcf.frame_pending = 0;
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if(packetbuf_holds_broadcast()) {
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params.fcf.ack_required = 0;
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/* Suppress seqno on broadcast if supported (frame v2 or more) */
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params.fcf.sequence_number_suppression = FRAME802154_VERSION >= FRAME802154_IEEE802154_2015;
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} else {
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params.fcf.ack_required = packetbuf_attr(PACKETBUF_ATTR_MAC_ACK);
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params.fcf.sequence_number_suppression = FRAME802154_SUPPR_SEQNO;
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}
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/* We do not compress PAN ID in outgoing frames, i.e. include one PAN ID (dest by default)
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* There is one exception, seemingly a typo in Table 2a: rows 2 and 3: when there is no
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* source nor destination address, we have dest PAN ID iff compression is *set*. */
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params.fcf.panid_compression = 0;
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/* Insert IEEE 802.15.4 version bits. */
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params.fcf.frame_version = FRAME802154_VERSION;
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#if LLSEC802154_USES_AUX_HEADER
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if(packetbuf_attr(PACKETBUF_ATTR_SECURITY_LEVEL)) {
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params.fcf.security_enabled = 1;
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}
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/* Setting security-related attributes */
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params.aux_hdr.security_control.security_level = packetbuf_attr(PACKETBUF_ATTR_SECURITY_LEVEL);
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params.aux_hdr.security_control.frame_counter_suppression = 1;
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params.aux_hdr.security_control.frame_counter_size = 1;
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#if LLSEC802154_USES_EXPLICIT_KEYS
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params.aux_hdr.security_control.key_id_mode = packetbuf_attr(PACKETBUF_ATTR_KEY_ID_MODE);
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params.aux_hdr.key_index = packetbuf_attr(PACKETBUF_ATTR_KEY_INDEX);
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params.aux_hdr.key_source.u16[0] = packetbuf_attr(PACKETBUF_ATTR_KEY_SOURCE_BYTES_0_1);
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#endif /* LLSEC802154_USES_EXPLICIT_KEYS */
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#endif /* LLSEC802154_USES_AUX_HEADER */
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/* Increment and set the data sequence number. */
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if(!do_create) {
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/* Only length calculation - no sequence number is needed and
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should not be consumed. */
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} else if(packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO)) {
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params.seq = packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO);
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} else {
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/* Ensure that the sequence number 0 is not used as it would bypass the above check. */
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/*
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* Before setting up "params", make sure we won't use 0 as the sequence number
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* of a newly created frame.
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*
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* The case when do_create is 0 is ignored since it's for only length
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* calculation. No sequence number is needed and should not be consumed.
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*/
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if(do_create != 0 && packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO) == 0) {
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if(mac_dsn == 0) {
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mac_dsn++;
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}
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params.seq = mac_dsn++;
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packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, params.seq);
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packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, mac_dsn);
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mac_dsn++;
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}
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/* Complete the addressing fields. */
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/**
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\todo For phase 1 the addresses are all long. We'll need a mechanism
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in the packetbuf attributes to tell the mac to use long or short for phase 2.
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*/
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if(LINKADDR_SIZE == 2) {
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/* Use short address mode if linkaddr size is short. */
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params.fcf.src_addr_mode = FRAME802154_SHORTADDRMODE;
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} else {
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params.fcf.src_addr_mode = FRAME802154_LONGADDRMODE;
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}
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params.dest_pid = frame802154_get_pan_id();
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framer_802154_setup_params(packetbuf_attr, packetbuf_holds_broadcast(),
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¶ms);
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if(packetbuf_holds_broadcast()) {
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/* Broadcast requires short address mode. */
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params.fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
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params.dest_addr[0] = 0xFF;
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params.dest_addr[1] = 0xFF;
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} else {
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linkaddr_copy((linkaddr_t *)¶ms.dest_addr,
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packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
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/* Use short address mode if linkaddr size is small */
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if(LINKADDR_SIZE == 2) {
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params.fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
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} else {
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params.fcf.dest_addr_mode = FRAME802154_LONGADDRMODE;
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}
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}
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/* Set the source PAN ID to the global variable. */
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params.src_pid = frame802154_get_pan_id();
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/*
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* Set up the source address using only the long address mode for
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* phase 1.
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*/
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linkaddr_copy((linkaddr_t *)¶ms.src_addr,
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packetbuf_addr(PACKETBUF_ADDR_SENDER));
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@ -174,17 +112,109 @@ create_frame(int type, int do_create)
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} else if(packetbuf_hdralloc(hdr_len)) {
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frame802154_create(¶ms, packetbuf_hdrptr());
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LOG_INFO("Out: %2X", params.fcf.frame_type);
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LOG_INFO("15.4-OUT: %2X ", params.fcf.frame_type);
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LOG_INFO_LLADDR((const linkaddr_t *)params.dest_addr);
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LOG_INFO_("%d %u (%u)\n", hdr_len, packetbuf_datalen(), packetbuf_totlen());
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LOG_INFO_(" %d %u (%u)\n", hdr_len, packetbuf_datalen(), packetbuf_totlen());
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return hdr_len;
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} else {
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LOG_ERR("Out: too large header: %u\n", hdr_len);
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LOG_ERR("15.4-OUT: too large header: %u\n", hdr_len);
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return FRAMER_FAILED;
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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framer_802154_setup_params(packetbuf_attr_t (*get_attr)(uint8_t type),
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uint8_t dest_is_broadcast, frame802154_t *params)
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{
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if(get_attr == NULL || params == NULL) {
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LOG_INFO("framer-802154: cannot setup params because of invalid argument\n");
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return;
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}
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/*
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* Don't initialize params with 0 because a caller may have already set
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* something to it
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*/
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/* Build the FCF. */
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params->fcf.frame_type = get_attr(PACKETBUF_ATTR_FRAME_TYPE);
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params->fcf.frame_pending = 0;
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if(dest_is_broadcast) {
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params->fcf.ack_required = 0;
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/* Suppress seqno on broadcast if supported (frame v2 or more) */
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params->fcf.sequence_number_suppression = FRAME802154_VERSION >= FRAME802154_IEEE802154_2015;
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} else {
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params->fcf.ack_required = get_attr(PACKETBUF_ATTR_MAC_ACK);
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params->fcf.sequence_number_suppression = FRAME802154_SUPPR_SEQNO;
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}
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/* We do not compress PAN ID in outgoing frames, i.e. include one PAN ID (dest by default)
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* There is one exception, seemingly a typo in Table 2a: rows 2 and 3: when there is no
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* source nor destination address, we have dest PAN ID iff compression is *set*. */
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params->fcf.panid_compression = 0;
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/* Set IE Present bit */
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params->fcf.ie_list_present = get_attr(PACKETBUF_ATTR_MAC_METADATA);
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/* Insert IEEE 802.15.4 version bits. */
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params->fcf.frame_version = FRAME802154_VERSION;
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#if LLSEC802154_USES_AUX_HEADER
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if(get_attr(PACKETBUF_ATTR_SECURITY_LEVEL)) {
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params->fcf.security_enabled = 1;
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}
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/* Setting security-related attributes */
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params->aux_hdr.security_control.security_level = get_attr(PACKETBUF_ATTR_SECURITY_LEVEL);
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#if LLSEC802154_USES_FRAME_COUNTER
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params->aux_hdr.frame_counter.u16[0] = get_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_0_1);
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params->aux_hdr.frame_counter.u16[1] = get_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_2_3);
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#else /* LLSEC802154_USES_FRAME_COUNTER */
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params->aux_hdr.security_control.frame_counter_suppression = 1;
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params->aux_hdr.security_control.frame_counter_size = 1;
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#endif /* LLSEC802154_USES_FRAME_COUNTER */
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#if LLSEC802154_USES_EXPLICIT_KEYS
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params->aux_hdr.security_control.key_id_mode = get_attr(PACKETBUF_ATTR_KEY_ID_MODE);
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params->aux_hdr.key_index = get_attr(PACKETBUF_ATTR_KEY_INDEX);
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params->aux_hdr.key_source.u16[0] = get_attr(PACKETBUF_ATTR_KEY_SOURCE_BYTES_0_1);
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#endif /* LLSEC802154_USES_EXPLICIT_KEYS */
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#else
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params->fcf.security_enabled = 0;
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#endif /* LLSEC802154_USES_AUX_HEADER */
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params->seq = get_attr(PACKETBUF_ATTR_MAC_SEQNO);
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/* Set the source PAN ID to the global variable. */
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params->src_pid = frame802154_get_pan_id();
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/* Source address itself should be set outside this function. */
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if(get_attr(PACKETBUF_ATTR_MAC_NO_SRC_ADDR) == 1) {
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params->fcf.src_addr_mode = FRAME802154_NOADDR;
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} else {
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if(LINKADDR_SIZE == 2) {
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/* Use short address mode if linkaddr size is short. */
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params->fcf.src_addr_mode = FRAME802154_SHORTADDRMODE;
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} else {
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params->fcf.src_addr_mode = FRAME802154_LONGADDRMODE;
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}
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}
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params->dest_pid = frame802154_get_pan_id();
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/* Destination address itself should be set outside this function. */
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if(get_attr(PACKETBUF_ATTR_MAC_NO_DEST_ADDR) == 1) {
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params->fcf.dest_addr_mode = FRAME802154_NOADDR;
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} else if(dest_is_broadcast) {
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/* Broadcast requires short address mode. */
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params->fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
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} else {
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if(LINKADDR_SIZE == 2) {
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params->fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
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} else {
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params->fcf.dest_addr_mode = FRAME802154_LONGADDRMODE;
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static int
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hdr_length(void)
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{
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@ -212,7 +242,7 @@ parse(void)
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if(frame.dest_pid != frame802154_get_pan_id() &&
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frame.dest_pid != FRAME802154_BROADCASTPANDID) {
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/* Packet to another PAN */
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LOG_WARN("In: for another pan %u\n", frame.dest_pid);
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LOG_WARN("15.4: for another pan %u\n", frame.dest_pid);
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return FRAMER_FAILED;
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}
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if(!frame802154_is_broadcast_addr(frame.fcf.dest_addr_mode, frame.dest_addr)) {
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@ -225,10 +255,17 @@ parse(void)
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} else {
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packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, 0xffff);
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}
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#if NETSTACK_CONF_WITH_RIME
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packetbuf_set_attr(PACKETBUF_ATTR_PACKET_ID, frame.seq);
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#endif
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#if LLSEC802154_USES_AUX_HEADER
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if(frame.fcf.security_enabled) {
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packetbuf_set_attr(PACKETBUF_ATTR_SECURITY_LEVEL, frame.aux_hdr.security_control.security_level);
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#if LLSEC802154_USES_FRAME_COUNTER
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packetbuf_set_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_0_1, frame.aux_hdr.frame_counter.u16[0]);
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packetbuf_set_attr(PACKETBUF_ATTR_FRAME_COUNTER_BYTES_2_3, frame.aux_hdr.frame_counter.u16[1]);
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#endif /* LLSEC802154_USES_FRAME_COUNTER */
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#if LLSEC802154_USES_EXPLICIT_KEYS
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packetbuf_set_attr(PACKETBUF_ATTR_KEY_ID_MODE, frame.aux_hdr.security_control.key_id_mode);
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packetbuf_set_attr(PACKETBUF_ATTR_KEY_INDEX, frame.aux_hdr.key_index);
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@ -237,10 +274,11 @@ parse(void)
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}
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#endif /* LLSEC802154_USES_AUX_HEADER */
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LOG_INFO("In: %2X", frame.fcf.frame_type);
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LOG_INFO("15.4-IN: %2X ", frame.fcf.frame_type);
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LOG_INFO_LLADDR(packetbuf_addr(PACKETBUF_ADDR_SENDER));
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LOG_INFO_(" ");
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LOG_INFO_LLADDR(packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
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LOG_INFO_("%d %u (%u)\n", hdr_len, packetbuf_datalen(), packetbuf_totlen());
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LOG_INFO_(" %d %u (%u)\n", hdr_len, packetbuf_datalen(), packetbuf_totlen());
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return hdr_len;
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}
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@ -39,8 +39,14 @@
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#ifndef FRAMER_802154_H_
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#define FRAMER_802154_H_
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#include "net/packetbuf.h"
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#include "net/mac/framer/framer.h"
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/* Setup frame802154_t with use of a specified get_attr */
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void framer_802154_setup_params(packetbuf_attr_t (*get_attr)(uint8_t type),
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uint8_t dest_is_broadcast,
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frame802154_t *params);
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extern const struct framer framer_802154;
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#endif /* FRAMER_802154_H_ */
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@ -219,6 +219,9 @@ enum {
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PACKETBUF_ATTR_TIMESTAMP,
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PACKETBUF_ATTR_MAC_SEQNO,
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PACKETBUF_ATTR_MAC_ACK,
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PACKETBUF_ATTR_MAC_METADATA,
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PACKETBUF_ATTR_MAC_NO_SRC_ADDR,
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PACKETBUF_ATTR_MAC_NO_DEST_ADDR,
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#if TSCH_WITH_LINK_SELECTOR
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PACKETBUF_ATTR_TSCH_SLOTFRAME,
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PACKETBUF_ATTR_TSCH_TIMESLOT,
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