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Another baby step in removing MAC knowledge from 6loWPAN.

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This commit is contained in:
Gregory Nutt 2017-05-04 11:33:22 -06:00
parent 2d5fa7bc2e
commit 1cf891bbe1
12 changed files with 206 additions and 120 deletions
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44
include/nuttx/net/ieee802154.h
View File

@ -72,50 +72,6 @@
# define NET_6LOWPAN_ADDRSIZE NET_6LOWPAN_SADDRSIZE
#endif
/* Frame format definitions *************************************************/
/* These are some definitions of element values used in the FCF. See the
* IEEE802.15.4 spec for details.
*/
#define FRAME802154_FRAMETYPE_SHIFT (0) /* Bits 0-2: Frame type */
#define FRAME802154_FRAMETYPE_MASK (7 << FRAME802154_FRAMETYPE_SHIFT)
#define FRAME802154_SECENABLED_SHIFT (3) /* Bit 3: Security enabled */
#define FRAME802154_FRAMEPENDING_SHIFT (4) /* Bit 4: Frame pending */
#define FRAME802154_ACKREQUEST_SHIFT (5) /* Bit 5: ACK request */
#define FRAME802154_PANIDCOMP_SHIFT (6) /* Bit 6: PANID compression */
/* Bits 7-9: Reserved */
#define FRAME802154_DSTADDR_SHIFT (2) /* Bits 10-11: Dest address mode */
#define FRAME802154_DSTADDR_MASK (3 << FRAME802154_DSTADDR_SHIFT)
#define FRAME802154_VERSION_SHIFT (4) /* Bit 12-13: Frame version */
#define FRAME802154_VERSION_MASK (3 << FRAME802154_VERSION_SHIFT)
#define FRAME802154_SRCADDR_SHIFT (6) /* Bits 14-15: Source address mode */
#define FRAME802154_SRCADDR_MASK (3 << FRAME802154_SRCADDR_SHIFT)
/* Unshifted values for use in struct frame802154_fcf_s */
#define FRAME802154_BEACONFRAME (0)
#define FRAME802154_DATAFRAME (1)
#define FRAME802154_ACKFRAME (2)
#define FRAME802154_CMDFRAME (3)
#define FRAME802154_BEACONREQ (7)
#define FRAME802154_IEEERESERVED (0)
#define FRAME802154_NOADDR (0) /* Only valid for ACK or Beacon frames */
#define FRAME802154_SHORTADDRMODE (2)
#define FRAME802154_LONGADDRMODE (3)
#define FRAME802154_NOBEACONS 0x0f
#define FRAME802154_BROADCASTADDR 0xffff
#define FRAME802154_BROADCASTPANDID 0xffff
#define FRAME802154_IEEE802154_2003 (0)
#define FRAME802154_IEEE802154_2006 (1)
#define FRAME802154_SECURITY_LEVEL_NONE (0)
#define FRAME802154_SECURITY_LEVEL_128 (3)
/* This maximum size of an IEEE802.15.4 frame. Certain, non-standard
* devices may exceed this value, however.
*/

4
include/nuttx/net/netdev.h
View File

@ -437,9 +437,11 @@ int ipv6_input(FAR struct net_driver_s *dev);
#ifdef CONFIG_NET_6LOWPAN
struct ieee802154_driver_s; /* See sixlowpan.h */
struct eee802154_data_ind_s; /* See sixlowpan.h */
struct iob_s; /* See iob.h */
int sixlowpan_input(FAR struct ieee802154_driver_s *ieee,
FAR struct iob_s *framelist);
FAR struct iob_s *framelist,
FAR const struct eee802154_data_ind_s *ind);
#endif
/****************************************************************************

13
include/nuttx/net/sixlowpan.h
View File

@ -342,6 +342,7 @@
*/
struct ieee802154_frame_meta_s; /* Forward reference */
struct eee802154_data_ind_s; /* Forward reference */
struct iob_s; /* Forward reference */
struct ieee802154_driver_s
@ -420,7 +421,7 @@ struct ieee802154_driver_s
/* The source MAC address of the fragments being merged */
struct sixlowpan_addr_s i_fragsrc;
union sixlowpan_anyaddr_u i_fragsrc;
/* That time at which reassembly was started. If the elapsed time
* exceeds CONFIG_NET_6LOWPAN_MAXAGE, then the reassembly will
@ -525,7 +526,12 @@ struct ieee802154_driver_s
*
* Input Parameters:
* ieee - The IEEE802.15.4 MAC network driver interface.
* framelist - The head of an incoming list of frames.
* framelist - The head of an incoming list of frames. Normally this
* would be a single frame. A list may be provided if
* appropriate, however.
* ind - Meta data characterizing the received packet. If there are
* multilple frames in the list, this meta data must apply to
* all of the frames!
*
* Returned Value:
* Ok is returned on success; Othewise a negated errno value is returned.
@ -533,7 +539,8 @@ struct ieee802154_driver_s
****************************************************************************/
int sixlowpan_input(FAR struct ieee802154_driver_s *ieee,
FAR struct iob_s *framelist);
FAR struct iob_s *framelist,
FAR const struct eee802154_data_ind_s *ind);
#endif /* CONFIG_NET_6LOWPAN */
#endif /* __INCLUDE_NUTTX_NET_SIXLOWPAN_H */

27
net/sixlowpan/sixlowpan_framelist.c
View File

@ -234,7 +234,7 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
/* Reset address buffer and packet buffer metatadata */
memset(g_pktattrs, 0, PACKETBUF_NUM_ATTRS * sizeof(uint16_t));
memset(g_pktaddrs, 0, PACKETBUF_NUM_ADDRS * sizeof(struct sixlowpan_addr_s));
memset(&g_packet_meta, 0, sizeof(struct packet_metadata_s));
g_pktattrs[PACKETBUF_ATTR_MAX_MAC_TRANSMISSIONS] =
CONFIG_NET_6LOWPAN_MAX_MACTRANSMITS;
@ -284,11 +284,30 @@ int sixlowpan_queue_frames(FAR struct ieee802154_driver_s *ieee,
ninfo("Sending packet length %d\n", buflen);
/* Set the source and destination address */
/* Set the source and destination address. The source MAC address
* is a fixed size, determined by a configuration setting. The
* destination MAC address many be either short or extended.
*/
sixlowpan_addrcopy(&g_pktaddrs[PACKETBUF_ADDR_SENDER],
#ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
g_packet_meta.sextended = TRUE;
sixlowpan_eaddrcopy(g_packet_meta.source.eaddr.u8,
&ieee->i_dev.d_mac.ieee802154);
sixlowpan_addrcopy(&g_pktaddrs[PACKETBUF_ADDR_RECEIVER], destmac);
#else
sixlowpan_saddrcopy(g_packet_meta.source.saddr.u8,
&ieee->i_dev.d_mac.ieee802154);
#endif
/* REVISIT: Destination MAC address could be of different size than
* the source MAC address.
*/
#ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
g_packet_meta.dextended = TRUE;
sixlowpan_addrcopy(g_packet_meta.dest.eaddr.u8, destmac);
#else
sixlowpan_addrcopy(g_packet_meta.dest.saddr.u8, destmac);
#endif
/* Get the destination PAN ID.
*

103
net/sixlowpan/sixlowpan_framer.c
View File

@ -67,27 +67,26 @@
****************************************************************************/
/****************************************************************************
* Name: sixlowpan_addrnull
* Name: sixlowpan_anyaddrnull
*
* Description:
* If the output address is NULL in the MAC header buf, then it is
* If the destination address is all zero in the MAC header buf, then it is
* broadcast on the 802.15.4 network.
*
* Input parameters:
* addrmode - The address mode
* addr - The address to check
* addrlen - The length of the address in bytes
*
* Returned Value:
* The address length associated with the address mode.
* True if the address is all zero.
*
****************************************************************************/
static bool sixlowpan_addrnull(FAR uint8_t *addr)
static bool sixlowpan_anyaddrnull(FAR uint8_t *addr, uint8_t addrlen)
{
int i = NET_6LOWPAN_ADDRSIZE;
while (i-- > 0)
while (addrlen-- > 0)
{
if (addr[i] != 0x00)
if (addr[addrlen] != 0x00)
{
return false;
}
@ -96,6 +95,46 @@ static bool sixlowpan_addrnull(FAR uint8_t *addr)
return true;
}
/****************************************************************************
* Name: sixlowpan_saddrnull
*
* Description:
* If the destination address is all zero in the MAC header buf, then it is
* broadcast on the 802.15.4 network.
*
* Input parameters:
* eaddr - The short address to check
*
* Returned Value:
* The address length associated with the address mode.
*
****************************************************************************/
static inline bool sixlowpan_saddrnull(FAR uint8_t *saddr)
{
return sixlowpan_anyaddrnull(saddr, NET_6LOWPAN_SADDRSIZE);
}
/****************************************************************************
* Name: sixlowpan_eaddrnull
*
* Description:
* If the destination address is all zero in the MAC header buf, then it is
* broadcast on the 802.15.4 network.
*
* Input parameters:
* eaddr - The extended address to check
*
* Returned Value:
* The address length associated with the address mode.
*
****************************************************************************/
static inline bool sixlowpan_eaddrnull(FAR uint8_t *eaddr)
{
return sixlowpan_anyaddrnull(eaddr, NET_6LOWPAN_EADDRSIZE);
}
/****************************************************************************
* Public Functions
****************************************************************************/
@ -142,7 +181,15 @@ int sixlowpan_meta_data(uint16_t dest_panid,
* broadcast on the 802.15.4 network.
*/
rcvrnull = sixlowpan_addrnull(g_pktaddrs[PACKETBUF_ADDR_RECEIVER].u8);
if (g_packet_meta.dextended != 0)
{
rcvrnull = sixlowpan_eaddrnull(g_packet_meta.dest.eaddr.u8);
}
else
{
rcvrnull = sixlowpan_saddrnull(g_packet_meta.dest.saddr.u8);
}
if (rcvrnull)
{
meta->fcf.ack_required = g_pktattrs[PACKETBUF_ATTR_MAC_ACK];
@ -175,26 +222,30 @@ int sixlowpan_meta_data(uint16_t dest_panid,
meta->dest_addr[0] = 0xff;
meta->dest_addr[1] = 0xff;
}
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);
}
else
{
/* Copy the destination address */
sixlowpan_addrcopy((struct sixlowpan_addr_s *)&meta->dest_addr,
g_pktaddrs[PACKETBUF_ADDR_RECEIVER].u8);
/* Use short destination address mode if so configured */
#ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
meta->fcf.dest_addr_mode = FRAME802154_LONGADDRMODE;
#else
meta->fcf.dest_addr_mode = FRAME802154_SHORTADDRMODE;
#endif
sixlowpan_saddrcopy((struct sixlowpan_addr_s *)&meta->dest_addr,
g_packet_meta.dest.saddr.u8);
}
/* Set the source address to the node address assigned to the device */
sixlowpan_addrcopy((struct sixlowpan_addr_s *)&meta->src_addr,
&ieee->i_dev.d_mac.ieee802154);
#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);
#endif
/* Use short soruce address mode if so configured */
@ -203,7 +254,7 @@ int sixlowpan_meta_data(uint16_t dest_panid,
#else
meta->fcf.src_addr_mode = FRAME802154_SHORTADDRMODE;
#endif
#endif
#endif /* 0 */
#warning Missing logic
return -ENOSYS;

15
net/sixlowpan/sixlowpan_globals.c
View File

@ -67,9 +67,22 @@ uint8_t g_uncomp_hdrlen;
uint8_t g_frame_hdrlen;
/* In order to provide a customizable IEEE 802.15.4 MAC header, a structure
* of meta data is passed to the MAC network driver, struct
* ieee802154_frame_meta_s. Many of the settings in this meta data are
* fixed, deterimined by the 6loWPAN configuration. Other settings depend
* on the protocol used in the current packet or on chacteristics of the
* destination node.
*
* The following structure is used to summarize those per-packet
* customizations and, along, with the fixed configuratin settings,
* determines the full form of that meta data.
*/
/* Packet buffer metadata: Attributes and addresses */
uint16_t g_pktattrs[PACKETBUF_NUM_ATTRS];
struct sixlowpan_addr_s g_pktaddrs[PACKETBUF_NUM_ADDRS];
struct packet_metadata_s g_packet_meta;
#endif /* CONFIG_NET_6LOWPAN */

26
net/sixlowpan/sixlowpan_hc06.c
View File

@ -275,7 +275,7 @@ static uint8_t compress_addr_64(FAR const net_ipv6addr_t ipaddr,
****************************************************************************/
static void uncompress_addr(FAR net_ipv6addr_t ipaddr, uint8_t const prefix[],
uint8_t prefpost, FAR struct sixlowpan_addr_s *macaddr)
uint8_t prefpost)
{
uint8_t prefcount = prefpost >> 4;
uint8_t postcount = prefpost & 0x0f;
@ -316,7 +316,7 @@ static void uncompress_addr(FAR net_ipv6addr_t ipaddr, uint8_t const prefix[],
{
/* No IID based configuration if no prefix and no data => unspec */
sixlowpan_ipfromaddr(macaddr, ipaddr);
nwarn("WARNING: No IID based configuration\n")
}
ninfo("Uncompressing %d + %d => %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
@ -983,18 +983,22 @@ void sixlowpan_uncompresshdr_hc06(uint16_t iplen, FAR struct iob_s *iob,
}
}
/* If tmp == 0 we do not have a Address context and therefore no prefix */
/* If tmp == 0 we do not have a address context and therefore no prefix */
/* REVISIT: Source address may not be the same size as the destination
* address.
*/
uncompress_addr(ipv6->srcipaddr,
tmp != 0 ? addrcontext->prefix : NULL, g_unc_ctxconf[tmp],
(FAR struct sixlowpan_addr_s *)&g_pktaddrs[PACKETBUF_ADDR_SENDER]);
tmp != 0 ? addrcontext->prefix : NULL, g_unc_ctxconf[tmp]);
}
else
{
/* No compression and link local */
/* REVISIT: Source address may not be the same size as the destination
* address.
*/
uncompress_addr(ipv6->srcipaddr, g_llprefix, g_unc_llconf[tmp],
(FAR struct sixlowpan_addr_s *)&g_pktaddrs[PACKETBUF_ADDR_SENDER]);
uncompress_addr(ipv6->srcipaddr, g_llprefix, g_unc_llconf[tmp]);
}
/* Destination address */
@ -1029,7 +1033,7 @@ void sixlowpan_uncompresshdr_hc06(uint16_t iplen, FAR struct iob_s *iob,
g_hc06ptr++;
}
uncompress_addr(ipv6->destipaddr, prefix, g_unc_mxconf[tmp], NULL);
uncompress_addr(ipv6->destipaddr, prefix, g_unc_mxconf[tmp]);
}
}
else
@ -1052,15 +1056,13 @@ void sixlowpan_uncompresshdr_hc06(uint16_t iplen, FAR struct iob_s *iob,
return;
}
uncompress_addr(ipv6->destipaddr, addrcontext->prefix, g_unc_ctxconf[tmp],
(FAR struct sixlowpan_addr_s *)&g_pktaddrs[PACKETBUF_ADDR_RECEIVER]);
uncompress_addr(ipv6->destipaddr, addrcontext->prefix, g_unc_ctxconf[tmp]);
}
else
{
/* Not address context based => link local M = 0, DAC = 0 - same as SAC */
uncompress_addr(ipv6->destipaddr, g_llprefix, g_unc_llconf[tmp],
(FAR struct sixlowpan_addr_s *)&g_pktaddrs[PACKETBUF_ADDR_RECEIVER]);
uncompress_addr(ipv6->destipaddr, g_llprefix, g_unc_llconf[tmp]);
}
}

8
net/sixlowpan/sixlowpan_hc1.c
View File

@ -271,14 +271,6 @@ int sixlowpan_uncompresshdr_hc1(uint16_t iplen, FAR struct iob_s *iob,
ipv6->tcf = 0; /* Bits 0-3: traffic class (LS), 4-bits: flow label (MS) */
ipv6->flow = 0; /* 16-bit flow label (LS) */
/* Use stateless auto-configuration to set source and destination IP
* addresses.
*/
sixlowpan_ipfromaddr(&g_pktaddrs[PACKETBUF_ADDR_SENDER],
ipv6->srcipaddr);
sixlowpan_ipfromaddr(&g_pktaddrs[PACKETBUF_ADDR_RECEIVER],
ipv6->destipaddr);
g_uncomp_hdrlen += IPv6_HDRLEN;
/* len[], proto, and ttl depend on the encoding */

27
net/sixlowpan/sixlowpan_input.c
View File

@ -401,8 +401,8 @@ static int sixlowpan_frame_process(FAR struct ieee802154_driver_s *ieee,
/* Verify that this fragment is part of that reassembly sequence */
else if (fragsize != ieee->i_pktlen || ieee->i_reasstag != fragtag ||
!sixlowpan_addrcmp(&ieee->i_fragsrc, &g_pktaddrs[PACKETBUF_ADDR_SENDER]))
else if (fragsize != ieee->i_pktlen || ieee->i_reasstag != fragtag /* ||
!sixlowpan_addrcmp(&ieee->i_fragsrc, &ind->???) */)
{
/* The packet is a fragment that does not belong to the packet
* being reassembled or the packet is not a fragment.
@ -454,7 +454,15 @@ static int sixlowpan_frame_process(FAR struct ieee802154_driver_s *ieee,
ninfo("Starting reassembly: i_pktlen %u, i_reasstag %d\n",
ieee->i_pktlen, ieee->i_reasstag);
sixlowpan_addrcopy(&ieee->i_fragsrc, &g_pktaddrs[PACKETBUF_ADDR_SENDER]);
/* Extract the source address from the 'ind' meta data. NOTE that the
* size of the source address may be different that our local, destination
* address.
*/
#warning Missing logic
#if 0
sixlowpan_addrcopy(&ieee->i_fragsrc, ind->???]);
#endif
}
#endif /* CONFIG_NET_6LOWPAN_FRAG */
@ -496,7 +504,6 @@ static int sixlowpan_frame_process(FAR struct ieee802154_driver_s *ieee,
#ifdef CONFIG_NET_6LOWPAN_FRAG
/* Is this the first fragment is a sequence? */
if (isfirstfrag)
{
/* Yes.. Remember the offset from the beginning of d_buf where we
@ -517,6 +524,8 @@ static int sixlowpan_frame_process(FAR struct ieee802154_driver_s *ieee,
g_uncomp_hdrlen = ieee->i_boffset;
}
#endif /* CONFIG_NET_6LOWPAN_FRAG */
/* Copy "payload" from the frame buffer to the IEEE802.15.4 MAC driver's
@ -686,7 +695,12 @@ static int sixlowpan_dispatch(FAR struct ieee802154_driver_s *ieee)
*
* Input Parameters:
* ieee - The IEEE802.15.4 MAC network driver interface.
* framelist - The head of an incoming list of frames.
* framelist - The head of an incoming list of frames. Normally this
* would be a single frame. A list may be provided if
* appropriate, however.
* ind - Meta data characterizing the received packet. If there are
* multilple frames in the list, this meta data must apply to
* all of the frames!
*
* Returned Value:
* Ok is returned on success; Othewise a negated errno value is returned.
@ -694,7 +708,8 @@ static int sixlowpan_dispatch(FAR struct ieee802154_driver_s *ieee)
****************************************************************************/
int sixlowpan_input(FAR struct ieee802154_driver_s *ieee,
FAR struct iob_s *framelist)
FAR struct iob_s *framelist,
FAR const struct eee802154_data_ind_s *ind)
{
int ret = -EINVAL;

53
net/sixlowpan/sixlowpan_internal.h
View File

@ -74,13 +74,31 @@
/* IEEE 802.15.4 addres macros */
/* Copy a an IEEE 802.15.4 address */
#define sixlowpan_anyaddrcopy(dest,src,len) \
memcpy(dest, src, len)
#define sixlowpan_saddrcopy(dest,src) \
sixlowpan_anyaddrcopy(dest,src,NET_6LOWPAN_SADDRSIZE)
#define sixlowpan_aeddrcopy(dest,src) \
sixlowpan_anyaddrcopy(dest,src,NET_6LOWPAN_EADDRSIZE)
#define sixlowpan_addrcopy(dest,src) \
memcpy(dest, src, NET_6LOWPAN_ADDRSIZE)
sixlowpan_anyaddrcopy(dest,src,NET_6LOWPAN_ADDRSIZE)
/* Compare two IEEE 802.15.4 addresses */
#define sixlowpan_anyaddrcmp(addr1,addr2,len) \
(memcmp(addr1, addr2, len) == 0)
#define sixlowpan_saddrcmp(addr1,addr2) \
sixlowpan_anyaddrcmp(addr1,addr2,NET_6LOWPAN_SADDRSIZE)
#define sixlowpan_eaddrcmp(addr1,addr2) \
sixlowpan_anyaddrcmp(addr1,addr2,NET_6LOWPAN_EADDRSIZE)
#define sixlowpan_addrcmp(addr1,addr2) \
(memcmp(addr1, addr2, NET_6LOWPAN_ADDRSIZE) == 0)
sixlowpan_anyaddrcmp(addr1,addr2,NET_6LOWPAN_ADDRSIZE)
/* Packet buffer Definitions */
@ -127,15 +145,6 @@
#define PACKETBUF_NUM_ATTRS 23
/* Addresses (indices into g_pktaddrs) */
#define PACKETBUF_ADDR_SENDER 0
#define PACKETBUF_ADDR_RECEIVER 1
#define PACKETBUF_ADDR_ESENDER 2
#define PACKETBUF_ADDR_ERECEIVER 3
#define PACKETBUF_NUM_ADDRS 4
/* General helper macros ****************************************************/
#define GETINT16(ptr,index) \
@ -185,6 +194,26 @@ struct ipv6icmp_hdr_s
struct icmpv6_iphdr_s icmp;
};
/* In order to provide a customizable IEEE 802.15.4 MAC header, a structure
* of meta data is passed to the MAC network driver, struct
* ieee802154_frame_meta_s. Many of the settings in this meta data are
* fixed, deterimined by the 6loWPAN configuration. Other settings depend
* on the protocol used in the current packet or on chacteristics of the
* destination node.
*
* The following structure is used to summarize those per-packet
* customizations and, along, with the fixed configuratin settings,
* determines the full form of that meta data.
*/
struct packet_metadata_s
{
uint8_t sextended : 1; /* Extended source address */
uint8_t dextended : 1; /* Extended destination address */
union sixlowpan_anyaddr_u source; /* Source IEEE 802.15.4 address */
union sixlowpan_anyaddr_u dest; /* Destination IEEE 802.15.4 address */
};
/****************************************************************************
* Public Data
****************************************************************************/
@ -212,7 +241,7 @@ extern uint8_t g_frame_hdrlen;
/* Packet buffer metadata: Attributes and addresses */
extern uint16_t g_pktattrs[PACKETBUF_NUM_ATTRS];
extern struct sixlowpan_addr_s g_pktaddrs[PACKETBUF_NUM_ADDRS];
extern struct packet_metadata_s g_packet_meta;
/****************************************************************************
* Public Types

2
wireless/ieee802154/mac802154_loopback.c
View File

@ -211,7 +211,7 @@ static int lo_loopback(FAR struct net_driver_s *dev)
ninfo("Send frame %p to the network: Offset=%u Length=%u\n",
iob, iob->io_offset, iob->io_len);
ret = sixlowpan_input(&priv->lo_ieee, iob);
ret = sixlowpan_input(&priv->lo_ieee, iob, NULL);
/* Increment statistics */

2
wireless/ieee802154/mac802154_netdev.c
View File

@ -718,7 +718,7 @@ static void macnet_receive(FAR struct macnet_driver_s *priv)
/* Transfer the frame to the network logic */
sixlowpan_input(&priv->md_dev, iob);
sixlowpan_input(&priv->md_dev, iob, NULL);
}
/****************************************************************************