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added optional macros PACK_STRUCT_FLD_8() and PACK_STRUCT_FLD_S() to prevent gcc 4 from warning about struct members that do not need packing

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This commit is contained in:
goldsimon 2014-09-02 13:04:36 +02:00
parent 7c9b545b30
commit b0502d1f3b
14 changed files with 117 additions and 100 deletions
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5
CHANGELOG
View File

@ -6,6 +6,11 @@ HISTORY
++ New features:
2013-09-02: Simon Goldschmidt
* arch.h and many other files: added optional macros PACK_STRUCT_FLD_8() and
PACK_STRUCT_FLD_S() to prevent gcc 4 from warning about struct members that
do not need packing
2013-08-19: Simon Goldschmidt
* netif.h: bug #42998: made NETIF_MAX_HWADDR_LEN overridable for some special
networks

4
src/core/dns.c
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@ -152,8 +152,8 @@ PACK_STRUCT_BEGIN
/** DNS message header */
struct dns_hdr {
PACK_STRUCT_FIELD(u16_t id);
PACK_STRUCT_FIELD(u8_t flags1);
PACK_STRUCT_FIELD(u8_t flags2);
PACK_STRUCT_FLD_8(u8_t flags1);
PACK_STRUCT_FLD_8(u8_t flags2);
PACK_STRUCT_FIELD(u16_t numquestions);
PACK_STRUCT_FIELD(u16_t numanswers);
PACK_STRUCT_FIELD(u16_t numauthrr);

8
src/core/ipv4/igmp.c
View File

@ -124,10 +124,10 @@ Steve Reynolds
#endif
PACK_STRUCT_BEGIN
struct igmp_msg {
PACK_STRUCT_FIELD(u8_t igmp_msgtype);
PACK_STRUCT_FIELD(u8_t igmp_maxresp);
PACK_STRUCT_FIELD(u16_t igmp_checksum);
PACK_STRUCT_FIELD(ip_addr_p_t igmp_group_address);
PACK_STRUCT_FLD_8(u8_t igmp_msgtype);
PACK_STRUCT_FLD_8(u8_t igmp_maxresp);
PACK_STRUCT_FIELD(u16_t igmp_checksum);
PACK_STRUCT_FLD_S(ip_addr_p_t igmp_group_address);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES

8
src/core/ipv6/ethip6.c
View File

@ -62,7 +62,7 @@
#endif
PACK_STRUCT_BEGIN
struct eth_addr {
PACK_STRUCT_FIELD(u8_t addr[6]);
PACK_STRUCT_FLD_8(u8_t addr[6]);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -76,10 +76,10 @@ PACK_STRUCT_END
PACK_STRUCT_BEGIN
struct eth_hdr {
#if ETH_PAD_SIZE
PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
PACK_STRUCT_FLD_8(u8_t padding[ETH_PAD_SIZE]);
#endif
PACK_STRUCT_FIELD(struct eth_addr dest);
PACK_STRUCT_FIELD(struct eth_addr src);
PACK_STRUCT_FLD_S(struct eth_addr dest);
PACK_STRUCT_FLD_S(struct eth_addr src);
PACK_STRUCT_FIELD(u16_t type);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END

12
src/include/lwip/arch.h
View File

@ -68,6 +68,18 @@ extern "C" {
#define PACK_STRUCT_FIELD(x) x
#endif /* PACK_STRUCT_FIELD */
/* Used for struct fields of u8_t,
* where some compilers warn that packing is not necessary */
#ifndef PACK_STRUCT_FLD_8
#define PACK_STRUCT_FLD_8(x) PACK_STRUCT_FIELD(x)
#endif /* PACK_STRUCT_FLD_8 */
/* Used for struct fields of that are packed structs themself,
* where some compilers warn that packing is not necessary */
#ifndef PACK_STRUCT_FLD_S
#define PACK_STRUCT_FLD_S(x) PACK_STRUCT_FIELD(x)
#endif /* PACK_STRUCT_FLD_S */
#ifndef LWIP_UNUSED_ARG
#define LWIP_UNUSED_ARG(x) (void)x

24
src/include/lwip/dhcp.h
View File

@ -73,20 +73,20 @@ PACK_STRUCT_BEGIN
/** minimum set of fields of any DHCP message */
struct dhcp_msg
{
PACK_STRUCT_FIELD(u8_t op);
PACK_STRUCT_FIELD(u8_t htype);
PACK_STRUCT_FIELD(u8_t hlen);
PACK_STRUCT_FIELD(u8_t hops);
PACK_STRUCT_FLD_8(u8_t op);
PACK_STRUCT_FLD_8(u8_t htype);
PACK_STRUCT_FLD_8(u8_t hlen);
PACK_STRUCT_FLD_8(u8_t hops);
PACK_STRUCT_FIELD(u32_t xid);
PACK_STRUCT_FIELD(u16_t secs);
PACK_STRUCT_FIELD(u16_t flags);
PACK_STRUCT_FIELD(ip_addr_p_t ciaddr);
PACK_STRUCT_FIELD(ip_addr_p_t yiaddr);
PACK_STRUCT_FIELD(ip_addr_p_t siaddr);
PACK_STRUCT_FIELD(ip_addr_p_t giaddr);
PACK_STRUCT_FIELD(u8_t chaddr[DHCP_CHADDR_LEN]);
PACK_STRUCT_FIELD(u8_t sname[DHCP_SNAME_LEN]);
PACK_STRUCT_FIELD(u8_t file[DHCP_FILE_LEN]);
PACK_STRUCT_FLD_S(ip_addr_p_t ciaddr);
PACK_STRUCT_FLD_S(ip_addr_p_t yiaddr);
PACK_STRUCT_FLD_S(ip_addr_p_t siaddr);
PACK_STRUCT_FLD_S(ip_addr_p_t giaddr);
PACK_STRUCT_FLD_8(u8_t chaddr[DHCP_CHADDR_LEN]);
PACK_STRUCT_FLD_8(u8_t sname[DHCP_SNAME_LEN]);
PACK_STRUCT_FLD_8(u8_t file[DHCP_FILE_LEN]);
PACK_STRUCT_FIELD(u32_t cookie);
#define DHCP_MIN_OPTIONS_LEN 68U
/** make sure user does not configure this too small */
@ -98,7 +98,7 @@ struct dhcp_msg
/** set this to be sufficient for your options in outgoing DHCP msgs */
# define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN
#endif
PACK_STRUCT_FIELD(u8_t options[DHCP_OPTIONS_LEN]);
PACK_STRUCT_FLD_8(u8_t options[DHCP_OPTIONS_LEN]);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES

4
src/include/lwip/icmp.h
View File

@ -81,8 +81,8 @@ enum icmp_te_type {
*/
PACK_STRUCT_BEGIN
struct icmp_echo_hdr {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u16_t id);
PACK_STRUCT_FIELD(u16_t seqno);

8
src/include/lwip/icmp6.h
View File

@ -105,8 +105,8 @@ enum icmp6_pp_code {
#endif
PACK_STRUCT_BEGIN
struct icmp6_hdr {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t data);
} PACK_STRUCT_STRUCT;
@ -121,8 +121,8 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct icmp6_echo_hdr {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u16_t id);
PACK_STRUCT_FIELD(u16_t seqno);

12
src/include/lwip/ip4.h
View File

@ -63,9 +63,9 @@ extern "C" {
PACK_STRUCT_BEGIN
struct ip_hdr {
/* version / header length */
PACK_STRUCT_FIELD(u8_t _v_hl);
PACK_STRUCT_FLD_8(u8_t _v_hl);
/* type of service */
PACK_STRUCT_FIELD(u8_t _tos);
PACK_STRUCT_FLD_8(u8_t _tos);
/* total length */
PACK_STRUCT_FIELD(u16_t _len);
/* identification */
@ -77,14 +77,14 @@ struct ip_hdr {
#define IP_MF 0x2000U /* more fragments flag */
#define IP_OFFMASK 0x1fffU /* mask for fragmenting bits */
/* time to live */
PACK_STRUCT_FIELD(u8_t _ttl);
PACK_STRUCT_FLD_8(u8_t _ttl);
/* protocol*/
PACK_STRUCT_FIELD(u8_t _proto);
PACK_STRUCT_FLD_8(u8_t _proto);
/* checksum */
PACK_STRUCT_FIELD(u16_t _chksum);
/* source and destination IP addresses */
PACK_STRUCT_FIELD(ip_addr_p_t src);
PACK_STRUCT_FIELD(ip_addr_p_t dest);
PACK_STRUCT_FLD_S(ip_addr_p_t src);
PACK_STRUCT_FLD_S(ip_addr_p_t dest);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES

24
src/include/lwip/ip6.h
View File

@ -81,12 +81,12 @@ struct ip6_hdr {
/* payload length */
PACK_STRUCT_FIELD(u16_t _plen);
/* next header */
PACK_STRUCT_FIELD(u8_t _nexth);
PACK_STRUCT_FLD_8(u8_t _nexth);
/* hop limit */
PACK_STRUCT_FIELD(u8_t _hoplim);
PACK_STRUCT_FLD_8(u8_t _hoplim);
/* source and destination IP addresses */
PACK_STRUCT_FIELD(ip6_addr_p_t src);
PACK_STRUCT_FIELD(ip6_addr_p_t dest);
PACK_STRUCT_FLD_S(ip6_addr_p_t src);
PACK_STRUCT_FLD_S(ip6_addr_p_t dest);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -105,19 +105,19 @@ PACK_STRUCT_END
PACK_STRUCT_BEGIN
struct ip6_hbh_hdr {
/* next header */
PACK_STRUCT_FIELD(u8_t _nexth);
PACK_STRUCT_FLD_8(u8_t _nexth);
/* header length */
PACK_STRUCT_FIELD(u8_t _hlen);
PACK_STRUCT_FLD_8(u8_t _hlen);
/* router alert option type */
PACK_STRUCT_FIELD(u8_t _ra_opt_type);
PACK_STRUCT_FLD_8(u8_t _ra_opt_type);
/* router alert option data len */
PACK_STRUCT_FIELD(u8_t _ra_opt_dlen);
PACK_STRUCT_FLD_8(u8_t _ra_opt_dlen);
/* router alert option data */
PACK_STRUCT_FIELD(u16_t _ra_opt_data);
/* PadN option type */
PACK_STRUCT_FIELD(u8_t _padn_opt_type);
PACK_STRUCT_FLD_8(u8_t _padn_opt_type);
/* PadN option data len */
PACK_STRUCT_FIELD(u8_t _padn_opt_dlen);
PACK_STRUCT_FLD_8(u8_t _padn_opt_dlen);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -134,9 +134,9 @@ PACK_STRUCT_END
PACK_STRUCT_BEGIN
struct ip6_frag_hdr {
/* next header */
PACK_STRUCT_FIELD(u8_t _nexth);
PACK_STRUCT_FLD_8(u8_t _nexth);
/* reserved */
PACK_STRUCT_FIELD(u8_t reserved);
PACK_STRUCT_FLD_8(u8_t reserved);
/* fragment offset */
PACK_STRUCT_FIELD(u16_t _fragment_offset);
/* fragmented packet identification */

6
src/include/lwip/mld6.h
View File

@ -78,12 +78,12 @@ struct mld_group {
#endif
PACK_STRUCT_BEGIN
struct mld_header {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u16_t max_resp_delay);
PACK_STRUCT_FIELD(u16_t reserved);
PACK_STRUCT_FIELD(ip6_addr_p_t multicast_address);
PACK_STRUCT_FLD_S(ip6_addr_p_t multicast_address);
/* Options follow. */
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END

78
src/include/lwip/nd6.h
View File

@ -132,11 +132,11 @@ struct nd6_q_entry {
#endif
PACK_STRUCT_BEGIN
struct ns_header {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t reserved);
PACK_STRUCT_FIELD(ip6_addr_p_t target_address);
PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
/* Options follow. */
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
@ -150,12 +150,12 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct na_header {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u8_t flags);
PACK_STRUCT_FIELD(u8_t reserved[3]);
PACK_STRUCT_FIELD(ip6_addr_p_t target_address);
PACK_STRUCT_FLD_8(u8_t flags);
PACK_STRUCT_FLD_8(u8_t reserved[3]);
PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
/* Options follow. */
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
@ -172,8 +172,8 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct rs_header {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t reserved);
/* Options follow. */
@ -197,11 +197,11 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct ra_header {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u8_t current_hop_limit);
PACK_STRUCT_FIELD(u8_t flags);
PACK_STRUCT_FLD_8(u8_t current_hop_limit);
PACK_STRUCT_FLD_8(u8_t flags);
PACK_STRUCT_FIELD(u16_t router_lifetime);
PACK_STRUCT_FIELD(u32_t reachable_time);
PACK_STRUCT_FIELD(u32_t retrans_timer);
@ -218,12 +218,12 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct redirect_header {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t chksum);
PACK_STRUCT_FIELD(u32_t reserved);
PACK_STRUCT_FIELD(ip6_addr_p_t target_address);
PACK_STRUCT_FIELD(ip6_addr_p_t destination_address);
PACK_STRUCT_FLD_S(ip6_addr_p_t target_address);
PACK_STRUCT_FLD_S(ip6_addr_p_t destination_address);
/* Options follow. */
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
@ -239,9 +239,9 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct lladdr_option {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t length);
PACK_STRUCT_FIELD(u8_t addr[NETIF_MAX_HWADDR_LEN]);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t length);
PACK_STRUCT_FLD_8(u8_t addr[NETIF_MAX_HWADDR_LEN]);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -259,15 +259,15 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct prefix_option {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t length);
PACK_STRUCT_FIELD(u8_t prefix_length);
PACK_STRUCT_FIELD(u8_t flags);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t length);
PACK_STRUCT_FLD_8(u8_t prefix_length);
PACK_STRUCT_FLD_8(u8_t flags);
PACK_STRUCT_FIELD(u32_t valid_lifetime);
PACK_STRUCT_FIELD(u32_t preferred_lifetime);
PACK_STRUCT_FIELD(u8_t reserved2[3]);
PACK_STRUCT_FIELD(u8_t site_prefix_length);
PACK_STRUCT_FIELD(ip6_addr_p_t prefix);
PACK_STRUCT_FLD_8(u8_t reserved2[3]);
PACK_STRUCT_FLD_8(u8_t site_prefix_length);
PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -281,11 +281,11 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct redirected_header_option {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t length);
PACK_STRUCT_FIELD(u8_t reserved[6]);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t length);
PACK_STRUCT_FLD_8(u8_t reserved[6]);
/* Portion of redirected packet follows. */
/* PACK_STRUCT_FIELD(u8_t redirected[8]); */
/* PACK_STRUCT_FLD_8(u8_t redirected[8]); */
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -299,8 +299,8 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct mtu_option {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t length);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t length);
PACK_STRUCT_FIELD(u16_t reserved);
PACK_STRUCT_FIELD(u32_t mtu);
} PACK_STRUCT_STRUCT;
@ -316,12 +316,12 @@ PACK_STRUCT_END
#endif
PACK_STRUCT_BEGIN
struct route_option {
PACK_STRUCT_FIELD(u8_t type);
PACK_STRUCT_FIELD(u8_t length);
PACK_STRUCT_FIELD(u8_t prefix_length);
PACK_STRUCT_FIELD(u8_t preference);
PACK_STRUCT_FLD_8(u8_t type);
PACK_STRUCT_FLD_8(u8_t length);
PACK_STRUCT_FLD_8(u8_t prefix_length);
PACK_STRUCT_FLD_8(u8_t preference);
PACK_STRUCT_FIELD(u32_t route_lifetime);
PACK_STRUCT_FIELD(ip6_addr_p_t prefix);
PACK_STRUCT_FLD_S(ip6_addr_p_t prefix);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES

20
src/include/netif/etharp.h
View File

@ -57,7 +57,7 @@ extern "C" {
#endif
PACK_STRUCT_BEGIN
struct eth_addr {
PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]);
PACK_STRUCT_FLD_8(u8_t addr[ETHARP_HWADDR_LEN]);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES
@ -71,10 +71,10 @@ PACK_STRUCT_BEGIN
/** Ethernet header */
struct eth_hdr {
#if ETH_PAD_SIZE
PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
PACK_STRUCT_FLD_8(u8_t padding[ETH_PAD_SIZE]);
#endif
PACK_STRUCT_FIELD(struct eth_addr dest);
PACK_STRUCT_FIELD(struct eth_addr src);
PACK_STRUCT_FLD_S(struct eth_addr dest);
PACK_STRUCT_FLD_S(struct eth_addr src);
PACK_STRUCT_FIELD(u16_t type);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
@ -115,13 +115,13 @@ PACK_STRUCT_BEGIN
struct etharp_hdr {
PACK_STRUCT_FIELD(u16_t hwtype);
PACK_STRUCT_FIELD(u16_t proto);
PACK_STRUCT_FIELD(u8_t hwlen);
PACK_STRUCT_FIELD(u8_t protolen);
PACK_STRUCT_FLD_8(u8_t hwlen);
PACK_STRUCT_FLD_8(u8_t protolen);
PACK_STRUCT_FIELD(u16_t opcode);
PACK_STRUCT_FIELD(struct eth_addr shwaddr);
PACK_STRUCT_FIELD(struct ip_addr2 sipaddr);
PACK_STRUCT_FIELD(struct eth_addr dhwaddr);
PACK_STRUCT_FIELD(struct ip_addr2 dipaddr);
PACK_STRUCT_FLD_S(struct eth_addr shwaddr);
PACK_STRUCT_FLD_S(struct ip_addr2 sipaddr);
PACK_STRUCT_FLD_S(struct eth_addr dhwaddr);
PACK_STRUCT_FLD_S(struct ip_addr2 dipaddr);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#ifdef PACK_STRUCT_USE_INCLUDES

4
src/include/netif/ppp/pppoe.h
View File

@ -81,8 +81,8 @@
#endif
PACK_STRUCT_BEGIN
struct pppoehdr {
PACK_STRUCT_FIELD(u8_t vertype);
PACK_STRUCT_FIELD(u8_t code);
PACK_STRUCT_FLD_8(u8_t vertype);
PACK_STRUCT_FLD_8(u8_t code);
PACK_STRUCT_FIELD(u16_t session);
PACK_STRUCT_FIELD(u16_t plen);
} PACK_STRUCT_STRUCT;