sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

6loWPAN: The last vestiges of MAC header generate stripped out.

Browse Source
This commit is contained in:
Gregory Nutt 2017-05-04 13:19:11 -06:00
parent 920c0a2e50
commit d385f46130
4 changed files with 110 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/nuttx/wireless/ieee802154/ieee802154_mac.h
View File

@ -524,7 +524,7 @@ struct ieee802154_frame_meta_s
uint8_t msdu_handle; /* Handle assoc. with MSDU */
/* Number of bytes contained in the MAC Service Data Unit (MSDU)
* to be transmitted by the MAC sublayer enitity
* to be transmitted by the MAC sublayer entity
* Note: This could be a uint8_t but if anyone ever wants to use
* non-standard frame lengths, they may want a length larger than
* a uint8_t.

55
net/sixlowpan/sixlowpan_framelist.c
View File

@ -218,7 +218,6 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
struct sixlowpan_addr_s bcastmac;
uint16_t pktlen;
uint16_t paysize;
uint16_t dest_panid;
#ifdef CONFIG_NET_6LOWPAN_FRAG
uint16_t outlen = 0;
#endif
@ -238,6 +237,7 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
/* Set stream mode for all TCP packets, except FIN packets. */
#if 0 /* Currently the frame type is always data */
if (destip->proto == IP_PROTO_TCP)
{
FAR const struct tcp_hdr_s *tcp =
@ -253,6 +253,7 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
g_packet_meta.type = FRAME_ATTR_TYPE_STREAM_END;
}
}
#endif
/* The destination address will be tagged to each outbound packet. If the
* argument destmac is NULL, we are sending a broadcast packet.
@ -312,14 +313,14 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
* PAN IDs are the same.
*/
dest_panid = 0xffff;
(void)sixlowpan_src_panid(ieee, &dest_panid);
g_packet_meta.dpanid = 0xffff;
(void)sixlowpan_src_panid(ieee, &g_packet_meta.dpanid);
/* Based on the collected attributes and addresses, construct the MAC meta
* data structure that we need to interface with the IEEE802.15.4 MAC.
*/
ret = sixlowpan_meta_data(dest_panid, &meta);
ret = sixlowpan_meta_data(ieee, &meta, 0);
if (ret < 0)
{
nerr("ERROR: sixlowpan_meta_data() failed: %d\n", ret);
@ -528,14 +529,42 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
}
/* Submit all of the fragments to the MAC. We send all frames back-
* to-back like this to eliminate any possible condition where some
* to-back like this to minimize any possible condition where some
* frame which is not a fragment from this sequence from intervening.
*/
ret = sixlowpan_frame_submit(ieee, &meta, qhead);
if (ret < 0)
paysize = 0;
for (iob = qhead; iob != NULL; iob = qhead)
{
nerr("ERROR: sixlowpan_frame_submit() failed: %d\n", ret);
uint16_t newsize;
/* Remove the IOB from the list */
qhead = iob->io_flink;
iob->io_flink = NULL;
/* Re-construct the MAC meta data structure using the correct
* payload size for this frame (if it is different than the
* payload size of the previous frame).
*/
newsize = iob->io_len - iob->io_offset;
if (newsize != paysize)
{
ret = sixlowpan_meta_data(ieee, &meta, newsize);
if (ret < 0)
{
nerr("ERROR: sixlowpan_meta_data() failed: %d\n", ret);
}
paysize = newsize;
}
ret = sixlowpan_frame_submit(ieee, &meta, iob);
if (ret < 0)
{
nerr("ERROR: sixlowpan_frame_submit() failed: %d\n", ret);
}
}
/* Update the datagram TAG value */
@ -565,6 +594,16 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
sixlowpan_dumpbuffer("Outgoing frame",
(FAR const uint8_t *)iob->io_data, iob->io_len);
/* Re-construct the MAC meta data structure using the correct payload
* size for this frame.
*/
ret = sixlowpan_meta_data(ieee, &meta, iob->io_len - iob->io_offset);
if (ret < 0)
{
nerr("ERROR: sixlowpan_meta_data() failed: %d\n", ret);
}
/* Submit the frame to the MAC */
ret = sixlowpan_frame_submit(ieee, &meta, iob);

116
net/sixlowpan/sixlowpan_framer.c
View File

@ -147,9 +147,9 @@ static inline bool sixlowpan_eaddrnull(FAR uint8_t *eaddr)
* data structure that we need to interface with the IEEE802.15.4 MAC.
*
* Input Parameters:
* dest_panid - PAN ID of the destination. May be 0xffff if the destination
* is not associated.
* meta - Location to return the corresponding meta data.
* ieee - IEEE 802.15.4 MAC driver state reference.
* meta - Location to return the corresponding meta data.
* paylen - The size of the data payload to be sent.
*
* Returned Value:
* Ok is returned on success; Othewise a negated errno value is returned.
@ -159,105 +159,97 @@ static inline bool sixlowpan_eaddrnull(FAR uint8_t *eaddr)
*
****************************************************************************/
int sixlowpan_meta_data(uint16_t dest_panid,
FAR struct ieee802154_frame_meta_s *meta)
int sixlowpan_meta_data(FAR struct ieee802154_driver_s *ieee,
FAR struct ieee802154_frame_meta_s *meta,
uint16_t paylen)
{
#if 0 /* To be provided */
/* Set up the frame parameters */
uint16_t src_panid;
bool rcvrnull;
/* Initialize all prameters to all zero */
/* Initialize all settings to all zero */
memset(meta, 0, sizeof(struct ieee802154_frame_meta_s));
/* Build the FCF (Only non-zero elements need to be initialized). */
/* Source address mode */
meta->fcf.frame_type = FRAME802154_DATAFRAME;
meta->fcf.frame_pending = g_packet_meta.pending;
meta->src_addr_mode = g_packet_meta.sextended != 0?
IEEE802154_ADDRMODE_EXTENDED :
IEEE802154_ADDRMODE_SHORT;
/* If the output address is NULL in the MAC header buf, then it is
* broadcast on the 802.15.4 network.
*/
/* Check for a broadcast destination address (all zero) */
if (g_packet_meta.dextended != 0)
{
/* Extended destination address mode */
rcvrnull = sixlowpan_eaddrnull(g_packet_meta.dest.eaddr.u8);
}
else
{
/* Short destination address mode */
rcvrnull = sixlowpan_saddrnull(g_packet_meta.dest.saddr.u8);
}
if (rcvrnull)
{
meta->fcf.ack_required = g_packet_meta.macack;
meta->msdu_flags.ack_tx = TRUE;
}
/* Insert IEEE 802.15.4 (2003) version bit. */
/* Destination address */
meta->fcf.frame_version = FRAME802154_IEEE802154_2003;
/* Complete the addressing fields. */
/* Get the source PAN ID from the IEEE802.15.4 radio driver */
src_panid = 0xffff;
(void)sixlowpan_src_panid(ieee, &src_panid);
/* Set the source and destination PAN ID. */
meta->src_pid = src_panid;
meta->dest_pid = dest_panid;
/* If the output address is NULL in the MAC header buf, then it is
* broadcast on the 802.15.4 network.
/* If the output address is NULL, then it is broadcast on the 802.15.4
* network.
*/
if (rcvrnull)
{
/* Broadcast requires short address mode. */
meta->fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
meta->dest_addr[0] = 0xff;
meta->dest_addr[1] = 0xff;
meta->dest_addr.mode = IEEE802154_ADDRMODE_SHORT;
meta->dest_addr.saddr = 0;
}
else if (g_packet_meta.dextended != 0)
{
meta->fcf.dest_addr_mode = FRAME802154_LONGADDRMODE;
sixlowpan_eaddrcopy((struct sixlowpan_addr_s *)&meta->dest_addr,
g_packet_meta.dest.eaddr.u8);
/* Extended destination address mode */
meta->dest_addr.mode = IEEE802154_ADDRMODE_EXTENDED;
sixlowpan_eaddrcopy(&meta->dest_addr.eaddr, g_packet_meta.dest.eaddr.u8);
}
else
{
meta->fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
sixlowpan_saddrcopy((struct sixlowpan_addr_s *)&meta->dest_addr,
g_packet_meta.dest.saddr.u8);
/* Short destination address mode */
meta->dest_addr.mode = IEEE802154_ADDRMODE_SHORT;
sixlowpan_saddrcopy(&meta->dest_addr.saddr, g_packet_meta.dest.saddr.u8);
}
#ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
DEBUGASSERT(g_packet_meta.sextended != 0);
meta->fcf.src_addr_mode = FRAME802154_LONGADDRMODE;
sixlowpan_eaddrcopy((struct sixlowpan_addr_s *)&meta->src_addr,
g_packet_meta.source.eaddr.u8);
#else
DEBUGASSERT(g_packet_meta.sextended == 0);
meta->fcf.src_addr_mode = FRAME802154_SHORTADDRMODE;
sixlowpan_saddrcopy((struct sixlowpan_addr_s *)&meta->src_addr,
g_packet_meta.source.saddr.u8);
meta->dest_addr.panid = g_packet_meta.dpanid;
/* Handle associated with MSDU. Will increment once per packet, not
* necesarily per frame: The MSDU handler will be used for each fragment
* of a disassembled packet.
*/
meta->msdu_handle = ieee->i_msdu_handle++;
/* Number of bytes contained in the MAC Service Data Unit (MSDU) */
meta->msdu_length = paylen;
/* MSDU flags that may be non-zero */
#ifdef CONFIG_IEEE802154_SECURITY
# warning CONFIG_IEEE802154_SECURITY not yet supported"
#endif
#ifdef CONFIG_IEEE802154_UWB
# warning CONFIG_IEEE802154_UWB not yet supported"
#endif
/* Use short soruce address mode if so configured */
/* Ranging left zero */
#ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
meta->fcf.src_addr_mode = FRAME802154_LONGADDRMODE;
#else
meta->fcf.src_addr_mode = FRAME802154_SHORTADDRMODE;
#endif
#endif /* 0 */
#warning Missing logic
return -ENOSYS;
return OK;
}
/****************************************************************************

25
net/sixlowpan/sixlowpan_internal.h
View File

@ -80,7 +80,7 @@
#define sixlowpan_saddrcopy(dest,src) \
sixlowpan_anyaddrcopy(dest,src,NET_6LOWPAN_SADDRSIZE)
#define sixlowpan_aeddrcopy(dest,src) \
#define sixlowpan_eaddrcopy(dest,src) \
sixlowpan_anyaddrcopy(dest,src,NET_6LOWPAN_EADDRSIZE)
#define sixlowpan_addrcopy(dest,src) \
@ -100,14 +100,6 @@
#define sixlowpan_addrcmp(addr1,addr2) \
sixlowpan_anyaddrcmp(addr1,addr2,NET_6LOWPAN_ADDRSIZE)
/* Frame meta data definitions */
#define FRAME_ATTR_TYPE_DATA 0
#define FRAME_ATTR_TYPE_ACK 1
#define FRAME_ATTR_TYPE_STREAM 2
#define FRAME_ATTR_TYPE_STREAM_END 3
#define FRAME_ATTR_TYPE_TIMESTAMP 4
/* General helper macros ****************************************************/
#define GETINT16(ptr,index) \
@ -171,12 +163,10 @@ struct ipv6icmp_hdr_s
struct packet_metadata_s
{
uint8_t type : 3; /* See FRAME_ATTR_TYPE_* definitons */
uint8_t pending : 1; /* Pending attribute */
uint8_t macack : 1; /* MAC ACK */
uint8_t sextended : 1; /* Extended source address */
uint8_t dextended : 1; /* Extended destination address */
uint8_t xmits; /* Max MAC transmisstion */
uint16_t dpanid; /* Destination PAN ID */
union sixlowpan_anyaddr_u source; /* Source IEEE 802.15.4 address */
union sixlowpan_anyaddr_u dest; /* Destination IEEE 802.15.4 address */
};
@ -271,9 +261,9 @@ int sixlowpan_send(FAR struct net_driver_s *dev,
* data structure that we need to interface with the IEEE802.15.4 MAC.
*
* Input Parameters:
* dest_panid - PAN ID of the destination. May be 0xffff if the destination
* is not associated.
* meta - Location to return the corresponding meta data.
* ieee - IEEE 802.15.4 MAC driver state reference.
* meta - Location to return the corresponding meta data.
* paylen - The size of the data payload to be sent.
*
* Returned Value:
* Ok is returned on success; Othewise a negated errno value is returned.
@ -283,8 +273,9 @@ int sixlowpan_send(FAR struct net_driver_s *dev,
*
****************************************************************************/
int sixlowpan_meta_data(uint16_t dest_panid,
FAR struct ieee802154_frame_meta_s *meta);
int sixlowpan_meta_data(FAR struct ieee802154_driver_s *ieee,
FAR struct ieee802154_frame_meta_s *meta,
uint16_t paylen);
/****************************************************************************
* Name: sixlowpan_frame_hdrlen