[NETFILTER]: nf_conntrack_h323: constify and annotate H.323 helper

Constify data tables (predominantly in nf_conntrack_h323_types.c, but
also a few in nf_conntrack_h323_asn1.c) and use const qualifiers on
variables where possible in the h323 sources.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c
index a121989..ee47bf2 100644 (file)
--- a/net/ipv4/netfilter/nf_nat_h323.c
+++ b/net/ipv4/netfilter/nf_nat_h323.c
@@ -32,7 +32,8 @@ static int set_addr(struct sk_buff *skb,
                __be32 ip;
                __be16 port;
        } __attribute__ ((__packed__)) buf;
-       struct tcphdr _tcph, *th;
+       const struct tcphdr *th;
+       struct tcphdr _tcph;
 
        buf.ip = ip;
        buf.port = port;
@@ -99,7 +100,7 @@ static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
                        unsigned char **data,
                        TransportAddress *taddr, int count)
 {
-       struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+       const struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
        int dir = CTINFO2DIR(ctinfo);
        int i;
        __be16 port;

diff --git a/net/netfilter/nf_conntrack_h323_asn1.c b/net/netfilter/nf_conntrack_h323_asn1.c
index ef02262..8678823 100644 (file)
--- a/net/netfilter/nf_conntrack_h323_asn1.c
+++ b/net/netfilter/nf_conntrack_h323_asn1.c
@@ -87,7 +87,7 @@ typedef struct field_t {
        unsigned char ub;
        unsigned short attr;
        unsigned short offset;
-       struct field_t *fields;
+       const struct field_t *fields;
 } field_t;
 
 /* Bit Stream */
@@ -111,21 +111,21 @@ static unsigned int get_bitmap(bitstr_t *bs, unsigned int b);
 static unsigned int get_uint(bitstr_t *bs, int b);
 
 /* Decoder Functions */
-static int decode_nul(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_bool(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_oid(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_int(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_enum(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_bitstr(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_numstr(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_octstr(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_bmpstr(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_seq(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_seqof(bitstr_t *bs, field_t *f, char *base, int level);
-static int decode_choice(bitstr_t *bs, field_t *f, char *base, int level);
+static int decode_nul(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_bool(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_oid(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_int(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_enum(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_bitstr(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_numstr(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_octstr(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_bmpstr(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_seq(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_seqof(bitstr_t *bs, const struct field_t *f, char *base, int level);
+static int decode_choice(bitstr_t *bs, const struct field_t *f, char *base, int level);
 
 /* Decoder Functions Vector */
-typedef int (*decoder_t)(bitstr_t *, field_t *, char *, int);
+typedef int (*decoder_t)(bitstr_t *, const struct field_t *, char *, int);
 static const decoder_t Decoders[] = {
        decode_nul,
        decode_bool,
@@ -264,7 +264,8 @@ static unsigned int get_uint(bitstr_t *bs, int b)
 }
 
 /****************************************************************************/
-static int decode_nul(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_nul(bitstr_t *bs, const struct field_t *f,
+                      char *base, int level)
 {
        PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
 
@@ -272,7 +273,8 @@ static int decode_nul(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_bool(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_bool(bitstr_t *bs, const struct field_t *f,
+                       char *base, int level)
 {
        PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
 
@@ -283,7 +285,8 @@ static int decode_bool(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_oid(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_oid(bitstr_t *bs, const struct field_t *f,
+                      char *base, int level)
 {
        int len;
 
@@ -299,7 +302,8 @@ static int decode_oid(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_int(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_int(bitstr_t *bs, const struct field_t *f,
+                      char *base, int level)
 {
        unsigned int len;
 
@@ -342,7 +346,8 @@ static int decode_int(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_enum(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_enum(bitstr_t *bs, const struct field_t *f,
+                       char *base, int level)
 {
        PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
 
@@ -357,7 +362,8 @@ static int decode_enum(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_bitstr(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_bitstr(bitstr_t *bs, const struct field_t *f,
+                         char *base, int level)
 {
        unsigned int len;
 
@@ -390,7 +396,8 @@ static int decode_bitstr(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_numstr(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_numstr(bitstr_t *bs, const struct field_t *f,
+                         char *base, int level)
 {
        unsigned int len;
 
@@ -407,7 +414,8 @@ static int decode_numstr(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_octstr(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_octstr(bitstr_t *bs, const struct field_t *f,
+                         char *base, int level)
 {
        unsigned int len;
 
@@ -455,7 +463,8 @@ static int decode_octstr(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_bmpstr(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_bmpstr(bitstr_t *bs, const struct field_t *f,
+                         char *base, int level)
 {
        unsigned int len;
 
@@ -480,11 +489,12 @@ static int decode_bmpstr(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_seq(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_seq(bitstr_t *bs, const struct field_t *f,
+                      char *base, int level)
 {
        unsigned int ext, bmp, i, opt, len = 0, bmp2, bmp2_len;
        int err;
-       field_t *son;
+       const struct field_t *son;
        unsigned char *beg = NULL;
 
        PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
@@ -596,11 +606,12 @@ static int decode_seq(bitstr_t *bs, field_t *f, char *base, int level)
 }
 
 /****************************************************************************/
-static int decode_seqof(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_seqof(bitstr_t *bs, const struct field_t *f,
+                        char *base, int level)
 {
        unsigned int count, effective_count = 0, i, len = 0;
        int err;
-       field_t *son;
+       const struct field_t *son;
        unsigned char *beg = NULL;
 
        PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
@@ -685,11 +696,12 @@ static int decode_seqof(bitstr_t *bs, field_t *f, char *base, int level)
 
 
 /****************************************************************************/
-static int decode_choice(bitstr_t *bs, field_t *f, char *base, int level)
+static int decode_choice(bitstr_t *bs, const struct field_t *f,
+                         char *base, int level)
 {
        unsigned int type, ext, len = 0;
        int err;
-       field_t *son;
+       const struct field_t *son;
        unsigned char *beg = NULL;
 
        PRINT("%*.s%s\n", level * TAB_SIZE, " ", f->name);
@@ -756,7 +768,7 @@ static int decode_choice(bitstr_t *bs, field_t *f, char *base, int level)
 /****************************************************************************/
 int DecodeRasMessage(unsigned char *buf, size_t sz, RasMessage *ras)
 {
-       static field_t ras_message = {
+       static const struct field_t ras_message = {
                FNAME("RasMessage") CHOICE, 5, 24, 32, DECODE | EXT,
                0, _RasMessage
        };
@@ -773,7 +785,7 @@ int DecodeRasMessage(unsigned char *buf, size_t sz, RasMessage *ras)
 static int DecodeH323_UserInformation(unsigned char *buf, unsigned char *beg,
                                      size_t sz, H323_UserInformation *uuie)
 {
-       static field_t h323_userinformation = {
+       static const struct field_t h323_userinformation = {
                FNAME("H323-UserInformation") SEQ, 1, 2, 2, DECODE | EXT,
                0, _H323_UserInformation
        };
@@ -792,7 +804,7 @@ int DecodeMultimediaSystemControlMessage(unsigned char *buf, size_t sz,
                                         MultimediaSystemControlMessage *
                                         mscm)
 {
-       static field_t multimediasystemcontrolmessage = {
+       static const struct field_t multimediasystemcontrolmessage = {
                FNAME("MultimediaSystemControlMessage") CHOICE, 2, 4, 4,
                DECODE | EXT, 0, _MultimediaSystemControlMessage
        };

diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c
index 0256305..6213787 100644 (file)
--- a/net/netfilter/nf_conntrack_h323_main.c
+++ b/net/netfilter/nf_conntrack_h323_main.c
@@ -114,7 +114,8 @@ static int get_tpkt_data(struct sk_buff *skb, unsigned int protoff,
 {
        struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
        int dir = CTINFO2DIR(ctinfo);
-       struct tcphdr _tcph, *th;
+       const struct tcphdr *th;
+       struct tcphdr _tcph;
        int tcpdatalen;
        int tcpdataoff;
        unsigned char *tpkt;
@@ -212,11 +213,11 @@ static int get_tpkt_data(struct sk_buff *skb, unsigned int protoff,
 }
 
 /****************************************************************************/
-static int get_h245_addr(struct nf_conn *ct, unsigned char *data,
+static int get_h245_addr(struct nf_conn *ct, const unsigned char *data,
                         H245_TransportAddress *taddr,
                         union nf_inet_addr *addr, __be16 *port)
 {
-       unsigned char *p;
+       const unsigned char *p;
        int family = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
        int len;
 
@@ -625,7 +626,7 @@ int get_h225_addr(struct nf_conn *ct, unsigned char *data,
                  TransportAddress *taddr,
                  union nf_inet_addr *addr, __be16 *port)
 {
-       unsigned char *p;
+       const unsigned char *p;
        int family = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
        int len;
 
@@ -704,9 +705,8 @@ static int expect_h245(struct sk_buff *skb, struct nf_conn *ct,
 
 /* If the calling party is on the same side of the forward-to party,
  * we don't need to track the second call */
-static int callforward_do_filter(union nf_inet_addr *src,
-                                union nf_inet_addr *dst,
-                                int family)
+static int callforward_do_filter(const union nf_inet_addr *src,
+                                 const union nf_inet_addr *dst, int family)
 {
        const struct nf_afinfo *afinfo;
        struct flowi fl1, fl2;
@@ -1185,7 +1185,8 @@ static struct nf_conntrack_helper nf_conntrack_helper_q931[] __read_mostly = {
 static unsigned char *get_udp_data(struct sk_buff *skb, unsigned int protoff,
                                   int *datalen)
 {
-       struct udphdr _uh, *uh;
+       const struct udphdr *uh;
+       struct udphdr _uh;
        int dataoff;
 
        uh = skb_header_pointer(skb, protoff, sizeof(_uh), &_uh);
@@ -1468,7 +1469,7 @@ static int process_arq(struct sk_buff *skb, struct nf_conn *ct,
                       enum ip_conntrack_info ctinfo,
                       unsigned char **data, AdmissionRequest *arq)
 {
-       struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+       const struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
        int dir = CTINFO2DIR(ctinfo);
        __be16 port;
        union nf_inet_addr addr;

diff --git a/net/netfilter/nf_conntrack_h323_types.c b/net/netfilter/nf_conntrack_h323_types.c
index 3a21fdf..d880f35 100644 (file)
--- a/net/netfilter/nf_conntrack_h323_types.c
+++ b/net/netfilter/nf_conntrack_h323_types.c
@@ -5,22 +5,22 @@
  * This source code is licensed under General Public License version 2.
  */
 
-static field_t _TransportAddress_ipAddress[] = {       /* SEQUENCE */
+static const struct field_t _TransportAddress_ipAddress[] = {  /* SEQUENCE */
        {FNAME("ip") OCTSTR, FIXD, 4, 0, DECODE,
         offsetof(TransportAddress_ipAddress, ip), NULL},
        {FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _TransportAddress_ipSourceRoute_route[] = {     /* SEQUENCE OF */
+static const struct field_t _TransportAddress_ipSourceRoute_route[] = {        /* SEQUENCE OF */
        {FNAME("item") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
 };
 
-static field_t _TransportAddress_ipSourceRoute_routing[] = {   /* CHOICE */
+static const struct field_t _TransportAddress_ipSourceRoute_routing[] = {      /* CHOICE */
        {FNAME("strict") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("loose") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _TransportAddress_ipSourceRoute[] = {   /* SEQUENCE */
+static const struct field_t _TransportAddress_ipSourceRoute[] = {      /* SEQUENCE */
        {FNAME("ip") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
        {FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
        {FNAME("route") SEQOF, SEMI, 0, 0, SKIP, 0,
@@ -29,37 +29,37 @@ static field_t _TransportAddress_ipSourceRoute[] = {        /* SEQUENCE */
         _TransportAddress_ipSourceRoute_routing},
 };
 
-static field_t _TransportAddress_ipxAddress[] = {      /* SEQUENCE */
+static const struct field_t _TransportAddress_ipxAddress[] = { /* SEQUENCE */
        {FNAME("node") OCTSTR, FIXD, 6, 0, SKIP, 0, NULL},
        {FNAME("netnum") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
        {FNAME("port") OCTSTR, FIXD, 2, 0, SKIP, 0, NULL},
 };
 
-static field_t _TransportAddress_ip6Address[] = {      /* SEQUENCE */
+static const struct field_t _TransportAddress_ip6Address[] = { /* SEQUENCE */
        {FNAME("ip") OCTSTR, FIXD, 16, 0, DECODE,
         offsetof(TransportAddress_ip6Address, ip), NULL},
        {FNAME("port") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H221NonStandard[] = {  /* SEQUENCE */
+static const struct field_t _H221NonStandard[] = {     /* SEQUENCE */
        {FNAME("t35CountryCode") INT, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("t35Extension") INT, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("manufacturerCode") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _NonStandardIdentifier[] = {    /* CHOICE */
+static const struct field_t _NonStandardIdentifier[] = {       /* CHOICE */
        {FNAME("object") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("h221NonStandard") SEQ, 0, 3, 3, SKIP | EXT, 0,
         _H221NonStandard},
 };
 
-static field_t _NonStandardParameter[] = {     /* SEQUENCE */
+static const struct field_t _NonStandardParameter[] = {        /* SEQUENCE */
        {FNAME("nonStandardIdentifier") CHOICE, 1, 2, 2, SKIP | EXT, 0,
         _NonStandardIdentifier},
        {FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _TransportAddress[] = { /* CHOICE */
+static const struct field_t _TransportAddress[] = {    /* CHOICE */
        {FNAME("ipAddress") SEQ, 0, 2, 2, DECODE,
         offsetof(TransportAddress, ipAddress), _TransportAddress_ipAddress},
        {FNAME("ipSourceRoute") SEQ, 0, 4, 4, SKIP | EXT, 0,
@@ -75,7 +75,7 @@ static field_t _TransportAddress[] = {        /* CHOICE */
         _NonStandardParameter},
 };
 
-static field_t _AliasAddress[] = {     /* CHOICE */
+static const struct field_t _AliasAddress[] = {        /* CHOICE */
        {FNAME("dialedDigits") NUMDGT, 7, 1, 0, SKIP, 0, NULL},
        {FNAME("h323-ID") BMPSTR, BYTE, 1, 0, SKIP, 0, NULL},
        {FNAME("url-ID") IA5STR, WORD, 1, 0, SKIP, 0, NULL},
@@ -85,78 +85,78 @@ static field_t _AliasAddress[] = {  /* CHOICE */
        {FNAME("mobileUIM") CHOICE, 1, 2, 2, SKIP | EXT, 0, NULL},
 };
 
-static field_t _Setup_UUIE_sourceAddress[] = { /* SEQUENCE OF */
+static const struct field_t _Setup_UUIE_sourceAddress[] = {    /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _VendorIdentifier[] = { /* SEQUENCE */
+static const struct field_t _VendorIdentifier[] = {    /* SEQUENCE */
        {FNAME("vendor") SEQ, 0, 3, 3, SKIP | EXT, 0, _H221NonStandard},
        {FNAME("productId") OCTSTR, BYTE, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("versionId") OCTSTR, BYTE, 1, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _GatekeeperInfo[] = {   /* SEQUENCE */
+static const struct field_t _GatekeeperInfo[] = {      /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
 };
 
-static field_t _H310Caps[] = { /* SEQUENCE */
+static const struct field_t _H310Caps[] = {    /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H320Caps[] = { /* SEQUENCE */
+static const struct field_t _H320Caps[] = {    /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H321Caps[] = { /* SEQUENCE */
+static const struct field_t _H321Caps[] = {    /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H322Caps[] = { /* SEQUENCE */
+static const struct field_t _H322Caps[] = {    /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H323Caps[] = { /* SEQUENCE */
+static const struct field_t _H323Caps[] = {    /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H324Caps[] = { /* SEQUENCE */
+static const struct field_t _H324Caps[] = {    /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _VoiceCaps[] = {        /* SEQUENCE */
+static const struct field_t _VoiceCaps[] = {   /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _T120OnlyCaps[] = {     /* SEQUENCE */
+static const struct field_t _T120OnlyCaps[] = {        /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("dataRatesSupported") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("supportedPrefixes") SEQOF, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _SupportedProtocols[] = {       /* CHOICE */
+static const struct field_t _SupportedProtocols[] = {  /* CHOICE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP, 0,
         _NonStandardParameter},
        {FNAME("h310") SEQ, 1, 1, 3, SKIP | EXT, 0, _H310Caps},
@@ -171,29 +171,29 @@ static field_t _SupportedProtocols[] = {  /* CHOICE */
        {FNAME("t38FaxAnnexbOnly") SEQ, 2, 5, 5, SKIP | EXT, 0, NULL},
 };
 
-static field_t _GatewayInfo_protocol[] = {     /* SEQUENCE OF */
+static const struct field_t _GatewayInfo_protocol[] = {        /* SEQUENCE OF */
        {FNAME("item") CHOICE, 4, 9, 11, SKIP | EXT, 0, _SupportedProtocols},
 };
 
-static field_t _GatewayInfo[] = {      /* SEQUENCE */
+static const struct field_t _GatewayInfo[] = { /* SEQUENCE */
        {FNAME("protocol") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
         _GatewayInfo_protocol},
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
 };
 
-static field_t _McuInfo[] = {  /* SEQUENCE */
+static const struct field_t _McuInfo[] = {     /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("protocol") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _TerminalInfo[] = {     /* SEQUENCE */
+static const struct field_t _TerminalInfo[] = {        /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
 };
 
-static field_t _EndpointType[] = {     /* SEQUENCE */
+static const struct field_t _EndpointType[] = {        /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("vendor") SEQ, 2, 3, 3, SKIP | EXT | OPT, 0,
@@ -210,19 +210,19 @@ static field_t _EndpointType[] = {        /* SEQUENCE */
         0, NULL},
 };
 
-static field_t _Setup_UUIE_destinationAddress[] = {    /* SEQUENCE OF */
+static const struct field_t _Setup_UUIE_destinationAddress[] = {       /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _Setup_UUIE_destExtraCallInfo[] = {     /* SEQUENCE OF */
+static const struct field_t _Setup_UUIE_destExtraCallInfo[] = {        /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _Setup_UUIE_destExtraCRV[] = {  /* SEQUENCE OF */
+static const struct field_t _Setup_UUIE_destExtraCRV[] = {     /* SEQUENCE OF */
        {FNAME("item") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _Setup_UUIE_conferenceGoal[] = {        /* CHOICE */
+static const struct field_t _Setup_UUIE_conferenceGoal[] = {   /* CHOICE */
        {FNAME("create") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("join") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("invite") NUL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -231,12 +231,12 @@ static field_t _Setup_UUIE_conferenceGoal[] = {   /* CHOICE */
         0, NULL},
 };
 
-static field_t _Q954Details[] = {      /* SEQUENCE */
+static const struct field_t _Q954Details[] = { /* SEQUENCE */
        {FNAME("conferenceCalling") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("threePartyService") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _QseriesOptions[] = {   /* SEQUENCE */
+static const struct field_t _QseriesOptions[] = {      /* SEQUENCE */
        {FNAME("q932Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("q951Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("q952Full") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -247,32 +247,32 @@ static field_t _QseriesOptions[] = {      /* SEQUENCE */
        {FNAME("q954Info") SEQ, 0, 2, 2, SKIP | EXT, 0, _Q954Details},
 };
 
-static field_t _CallType[] = { /* CHOICE */
+static const struct field_t _CallType[] = {    /* CHOICE */
        {FNAME("pointToPoint") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("oneToN") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("nToOne") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("nToN") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H245_NonStandardIdentifier_h221NonStandard[] = {       /* SEQUENCE */
+static const struct field_t _H245_NonStandardIdentifier_h221NonStandard[] = {  /* SEQUENCE */
        {FNAME("t35CountryCode") INT, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("t35Extension") INT, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("manufacturerCode") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H245_NonStandardIdentifier[] = {       /* CHOICE */
+static const struct field_t _H245_NonStandardIdentifier[] = {  /* CHOICE */
        {FNAME("object") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("h221NonStandard") SEQ, 0, 3, 3, SKIP, 0,
         _H245_NonStandardIdentifier_h221NonStandard},
 };
 
-static field_t _H245_NonStandardParameter[] = {        /* SEQUENCE */
+static const struct field_t _H245_NonStandardParameter[] = {   /* SEQUENCE */
        {FNAME("nonStandardIdentifier") CHOICE, 1, 2, 2, SKIP, 0,
         _H245_NonStandardIdentifier},
        {FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H261VideoCapability[] = {      /* SEQUENCE */
+static const struct field_t _H261VideoCapability[] = { /* SEQUENCE */
        {FNAME("qcifMPI") INT, 2, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("cifMPI") INT, 2, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("temporalSpatialTradeOffCapability") BOOL, FIXD, 0, 0, SKIP, 0,
@@ -282,7 +282,7 @@ static field_t _H261VideoCapability[] = {   /* SEQUENCE */
        {FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H262VideoCapability[] = {      /* SEQUENCE */
+static const struct field_t _H262VideoCapability[] = { /* SEQUENCE */
        {FNAME("profileAndLevel-SPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("profileAndLevel-MPatLL") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("profileAndLevel-MPatML") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -304,7 +304,7 @@ static field_t _H262VideoCapability[] = {   /* SEQUENCE */
        {FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H263VideoCapability[] = {      /* SEQUENCE */
+static const struct field_t _H263VideoCapability[] = { /* SEQUENCE */
        {FNAME("sqcifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("qcifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("cifMPI") INT, 5, 1, 0, SKIP | OPT, 0, NULL},
@@ -330,7 +330,7 @@ static field_t _H263VideoCapability[] = {   /* SEQUENCE */
        {FNAME("h263Options") SEQ, 5, 29, 31, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _IS11172VideoCapability[] = {   /* SEQUENCE */
+static const struct field_t _IS11172VideoCapability[] = {      /* SEQUENCE */
        {FNAME("constrainedBitstream") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("videoBitRate") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("vbvBufferSize") INT, CONS, 0, 0, SKIP | OPT, 0, NULL},
@@ -341,7 +341,7 @@ static field_t _IS11172VideoCapability[] = {        /* SEQUENCE */
        {FNAME("videoBadMBsCap") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _VideoCapability[] = {  /* CHOICE */
+static const struct field_t _VideoCapability[] = {     /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("h261VideoCapability") SEQ, 2, 5, 6, SKIP | EXT, 0,
@@ -355,12 +355,12 @@ static field_t _VideoCapability[] = {     /* CHOICE */
        {FNAME("genericVideoCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
 };
 
-static field_t _AudioCapability_g7231[] = {    /* SEQUENCE */
+static const struct field_t _AudioCapability_g7231[] = {       /* SEQUENCE */
        {FNAME("maxAl-sduAudioFrames") INT, BYTE, 1, 0, SKIP, 0, NULL},
        {FNAME("silenceSuppression") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _IS11172AudioCapability[] = {   /* SEQUENCE */
+static const struct field_t _IS11172AudioCapability[] = {      /* SEQUENCE */
        {FNAME("audioLayer1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("audioLayer2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("audioLayer3") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -372,7 +372,7 @@ static field_t _IS11172AudioCapability[] = {        /* SEQUENCE */
        {FNAME("bitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
 };
 
-static field_t _IS13818AudioCapability[] = {   /* SEQUENCE */
+static const struct field_t _IS13818AudioCapability[] = {      /* SEQUENCE */
        {FNAME("audioLayer1") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("audioLayer2") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("audioLayer3") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -396,7 +396,7 @@ static field_t _IS13818AudioCapability[] = {        /* SEQUENCE */
        {FNAME("bitRate") INT, WORD, 1, 0, SKIP, 0, NULL},
 };
 
-static field_t _AudioCapability[] = {  /* CHOICE */
+static const struct field_t _AudioCapability[] = {     /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("g711Alaw64k") INT, BYTE, 1, 0, SKIP, 0, NULL},
@@ -424,7 +424,7 @@ static field_t _AudioCapability[] = {       /* CHOICE */
        {FNAME("g729Extensions") SEQ, 1, 8, 8, SKIP | EXT, 0, NULL},
 };
 
-static field_t _DataProtocolCapability[] = {   /* CHOICE */
+static const struct field_t _DataProtocolCapability[] = {      /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("v14buffered") NUL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -442,7 +442,7 @@ static field_t _DataProtocolCapability[] = {        /* CHOICE */
        {FNAME("udp") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _T84Profile_t84Restricted[] = { /* SEQUENCE */
+static const struct field_t _T84Profile_t84Restricted[] = {    /* SEQUENCE */
        {FNAME("qcif") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("cif") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("ccir601Seq") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -464,25 +464,25 @@ static field_t _T84Profile_t84Restricted[] = {    /* SEQUENCE */
        {FNAME("digPhotoHighProg") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _T84Profile[] = {       /* CHOICE */
+static const struct field_t _T84Profile[] = {  /* CHOICE */
        {FNAME("t84Unrestricted") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("t84Restricted") SEQ, 0, 19, 19, SKIP | EXT, 0,
         _T84Profile_t84Restricted},
 };
 
-static field_t _DataApplicationCapability_application_t84[] = {        /* SEQUENCE */
+static const struct field_t _DataApplicationCapability_application_t84[] = {   /* SEQUENCE */
        {FNAME("t84Protocol") CHOICE, 3, 7, 14, SKIP | EXT, 0,
         _DataProtocolCapability},
        {FNAME("t84Profile") CHOICE, 1, 2, 2, SKIP, 0, _T84Profile},
 };
 
-static field_t _DataApplicationCapability_application_nlpid[] = {      /* SEQUENCE */
+static const struct field_t _DataApplicationCapability_application_nlpid[] = { /* SEQUENCE */
        {FNAME("nlpidProtocol") CHOICE, 3, 7, 14, SKIP | EXT, 0,
         _DataProtocolCapability},
        {FNAME("nlpidData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _DataApplicationCapability_application[] = {    /* CHOICE */
+static const struct field_t _DataApplicationCapability_application[] = {       /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("t120") CHOICE, 3, 7, 14, DECODE | EXT,
@@ -509,20 +509,20 @@ static field_t _DataApplicationCapability_application[] = {       /* CHOICE */
        {FNAME("genericDataCapability") SEQ, 5, 6, 6, SKIP | EXT, 0, NULL},
 };
 
-static field_t _DataApplicationCapability[] = {        /* SEQUENCE */
+static const struct field_t _DataApplicationCapability[] = {   /* SEQUENCE */
        {FNAME("application") CHOICE, 4, 10, 14, DECODE | EXT,
         offsetof(DataApplicationCapability, application),
         _DataApplicationCapability_application},
        {FNAME("maxBitRate") INT, CONS, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _EncryptionMode[] = {   /* CHOICE */
+static const struct field_t _EncryptionMode[] = {      /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("h233Encryption") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _DataType[] = { /* CHOICE */
+static const struct field_t _DataType[] = {    /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("nullData") NUL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -538,7 +538,7 @@ static field_t _DataType[] = {      /* CHOICE */
        {FNAME("multiplexedStream") SEQ, 0, 2, 2, SKIP | EXT, 0, NULL},
 };
 
-static field_t _H222LogicalChannelParameters[] = {     /* SEQUENCE */
+static const struct field_t _H222LogicalChannelParameters[] = {        /* SEQUENCE */
        {FNAME("resourceID") INT, WORD, 0, 0, SKIP, 0, NULL},
        {FNAME("subChannelID") INT, WORD, 0, 0, SKIP, 0, NULL},
        {FNAME("pcr-pid") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
@@ -546,12 +546,12 @@ static field_t _H222LogicalChannelParameters[] = {        /* SEQUENCE */
        {FNAME("streamDescriptors") OCTSTR, SEMI, 0, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _H223LogicalChannelParameters_adaptationLayerType_al3[] = {     /* SEQUENCE */
+static const struct field_t _H223LogicalChannelParameters_adaptationLayerType_al3[] = {        /* SEQUENCE */
        {FNAME("controlFieldOctets") INT, 2, 0, 0, SKIP, 0, NULL},
        {FNAME("sendBufferSize") INT, CONS, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H223LogicalChannelParameters_adaptationLayerType[] = { /* CHOICE */
+static const struct field_t _H223LogicalChannelParameters_adaptationLayerType[] = {    /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0,
         _H245_NonStandardParameter},
        {FNAME("al1Framed") NUL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -565,53 +565,53 @@ static field_t _H223LogicalChannelParameters_adaptationLayerType[] = {    /* CHOICE
        {FNAME("al3M") SEQ, 0, 5, 6, SKIP | EXT, 0, NULL},
 };
 
-static field_t _H223LogicalChannelParameters[] = {     /* SEQUENCE */
+static const struct field_t _H223LogicalChannelParameters[] = {        /* SEQUENCE */
        {FNAME("adaptationLayerType") CHOICE, 3, 6, 9, SKIP | EXT, 0,
         _H223LogicalChannelParameters_adaptationLayerType},
        {FNAME("segmentableFlag") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CRCLength[] = {        /* CHOICE */
+static const struct field_t _CRCLength[] = {   /* CHOICE */
        {FNAME("crc8bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("crc16bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("crc32bit") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _V76HDLCParameters[] = {        /* SEQUENCE */
+static const struct field_t _V76HDLCParameters[] = {   /* SEQUENCE */
        {FNAME("crcLength") CHOICE, 2, 3, 3, SKIP | EXT, 0, _CRCLength},
        {FNAME("n401") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("loopbackTestProcedure") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _V76LogicalChannelParameters_suspendResume[] = {        /* CHOICE */
+static const struct field_t _V76LogicalChannelParameters_suspendResume[] = {   /* CHOICE */
        {FNAME("noSuspendResume") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("suspendResumewAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("suspendResumewoAddress") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _V76LogicalChannelParameters_mode_eRM_recovery[] = {    /* CHOICE */
+static const struct field_t _V76LogicalChannelParameters_mode_eRM_recovery[] = {       /* CHOICE */
        {FNAME("rej") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("sREJ") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("mSREJ") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _V76LogicalChannelParameters_mode_eRM[] = {     /* SEQUENCE */
+static const struct field_t _V76LogicalChannelParameters_mode_eRM[] = {        /* SEQUENCE */
        {FNAME("windowSize") INT, 7, 1, 0, SKIP, 0, NULL},
        {FNAME("recovery") CHOICE, 2, 3, 3, SKIP | EXT, 0,
         _V76LogicalChannelParameters_mode_eRM_recovery},
 };
 
-static field_t _V76LogicalChannelParameters_mode[] = { /* CHOICE */
+static const struct field_t _V76LogicalChannelParameters_mode[] = {    /* CHOICE */
        {FNAME("eRM") SEQ, 0, 2, 2, SKIP | EXT, 0,
         _V76LogicalChannelParameters_mode_eRM},
        {FNAME("uNERM") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _V75Parameters[] = {    /* SEQUENCE */
+static const struct field_t _V75Parameters[] = {       /* SEQUENCE */
        {FNAME("audioHeaderPresent") BOOL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _V76LogicalChannelParameters[] = {      /* SEQUENCE */
+static const struct field_t _V76LogicalChannelParameters[] = { /* SEQUENCE */
        {FNAME("hdlcParameters") SEQ, 0, 3, 3, SKIP | EXT, 0,
         _V76HDLCParameters},
        {FNAME("suspendResume") CHOICE, 2, 3, 3, SKIP | EXT, 0,
@@ -622,38 +622,38 @@ static field_t _V76LogicalChannelParameters[] = { /* SEQUENCE */
        {FNAME("v75Parameters") SEQ, 0, 1, 1, SKIP | EXT, 0, _V75Parameters},
 };
 
-static field_t _H2250LogicalChannelParameters_nonStandard[] = {        /* SEQUENCE OF */
+static const struct field_t _H2250LogicalChannelParameters_nonStandard[] = {   /* SEQUENCE OF */
        {FNAME("item") SEQ, 0, 2, 2, SKIP, 0, _H245_NonStandardParameter},
 };
 
-static field_t _UnicastAddress_iPAddress[] = { /* SEQUENCE */
+static const struct field_t _UnicastAddress_iPAddress[] = {    /* SEQUENCE */
        {FNAME("network") OCTSTR, FIXD, 4, 0, DECODE,
         offsetof(UnicastAddress_iPAddress, network), NULL},
        {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _UnicastAddress_iPXAddress[] = {        /* SEQUENCE */
+static const struct field_t _UnicastAddress_iPXAddress[] = {   /* SEQUENCE */
        {FNAME("node") OCTSTR, FIXD, 6, 0, SKIP, 0, NULL},
        {FNAME("netnum") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
        {FNAME("tsapIdentifier") OCTSTR, FIXD, 2, 0, SKIP, 0, NULL},
 };
 
-static field_t _UnicastAddress_iP6Address[] = {        /* SEQUENCE */
+static const struct field_t _UnicastAddress_iP6Address[] = {   /* SEQUENCE */
        {FNAME("network") OCTSTR, FIXD, 16, 0, DECODE,
         offsetof(UnicastAddress_iP6Address, network), NULL},
        {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _UnicastAddress_iPSourceRouteAddress_routing[] = {      /* CHOICE */
+static const struct field_t _UnicastAddress_iPSourceRouteAddress_routing[] = { /* CHOICE */
        {FNAME("strict") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("loose") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _UnicastAddress_iPSourceRouteAddress_route[] = {        /* SEQUENCE OF */
+static const struct field_t _UnicastAddress_iPSourceRouteAddress_route[] = {   /* SEQUENCE OF */
        {FNAME("item") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
 };
 
-static field_t _UnicastAddress_iPSourceRouteAddress[] = {      /* SEQUENCE */
+static const struct field_t _UnicastAddress_iPSourceRouteAddress[] = { /* SEQUENCE */
        {FNAME("routing") CHOICE, 1, 2, 2, SKIP, 0,
         _UnicastAddress_iPSourceRouteAddress_routing},
        {FNAME("network") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
@@ -662,7 +662,7 @@ static field_t _UnicastAddress_iPSourceRouteAddress[] = {   /* SEQUENCE */
         _UnicastAddress_iPSourceRouteAddress_route},
 };
 
-static field_t _UnicastAddress[] = {   /* CHOICE */
+static const struct field_t _UnicastAddress[] = {      /* CHOICE */
        {FNAME("iPAddress") SEQ, 0, 2, 2, DECODE | EXT,
         offsetof(UnicastAddress, iPAddress), _UnicastAddress_iPAddress},
        {FNAME("iPXAddress") SEQ, 0, 3, 3, SKIP | EXT, 0,
@@ -676,17 +676,17 @@ static field_t _UnicastAddress[] = {      /* CHOICE */
        {FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0, NULL},
 };
 
-static field_t _MulticastAddress_iPAddress[] = {       /* SEQUENCE */
+static const struct field_t _MulticastAddress_iPAddress[] = {  /* SEQUENCE */
        {FNAME("network") OCTSTR, FIXD, 4, 0, SKIP, 0, NULL},
        {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _MulticastAddress_iP6Address[] = {      /* SEQUENCE */
+static const struct field_t _MulticastAddress_iP6Address[] = { /* SEQUENCE */
        {FNAME("network") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
        {FNAME("tsapIdentifier") INT, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _MulticastAddress[] = { /* CHOICE */
+static const struct field_t _MulticastAddress[] = {    /* CHOICE */
        {FNAME("iPAddress") SEQ, 0, 2, 2, SKIP | EXT, 0,
         _MulticastAddress_iPAddress},
        {FNAME("iP6Address") SEQ, 0, 2, 2, SKIP | EXT, 0,
@@ -695,14 +695,14 @@ static field_t _MulticastAddress[] = {    /* CHOICE */
        {FNAME("nonStandardAddress") SEQ, 0, 2, 2, SKIP, 0, NULL},
 };
 
-static field_t _H245_TransportAddress[] = {    /* CHOICE */
+static const struct field_t _H245_TransportAddress[] = {       /* CHOICE */
        {FNAME("unicastAddress") CHOICE, 3, 5, 7, DECODE | EXT,
         offsetof(H245_TransportAddress, unicastAddress), _UnicastAddress},
        {FNAME("multicastAddress") CHOICE, 1, 2, 4, SKIP | EXT, 0,
         _MulticastAddress},
 };
 
-static field_t _H2250LogicalChannelParameters[] = {    /* SEQUENCE */
+static const struct field_t _H2250LogicalChannelParameters[] = {       /* SEQUENCE */
        {FNAME("nonStandard") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
         _H2250LogicalChannelParameters_nonStandard},
        {FNAME("sessionID") INT, BYTE, 0, 0, SKIP, 0, NULL},
@@ -728,7 +728,7 @@ static field_t _H2250LogicalChannelParameters[] = { /* SEQUENCE */
        {FNAME("source") SEQ, 0, 2, 2, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters[] = {   /* CHOICE */
+static const struct field_t _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters[] = {      /* CHOICE */
        {FNAME("h222LogicalChannelParameters") SEQ, 3, 5, 5, SKIP | EXT, 0,
         _H222LogicalChannelParameters},
        {FNAME("h223LogicalChannelParameters") SEQ, 0, 2, 2, SKIP | EXT, 0,
@@ -742,7 +742,7 @@ static field_t _OpenLogicalChannel_forwardLogicalChannelParameters_multiplexPara
        {FNAME("none") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _OpenLogicalChannel_forwardLogicalChannelParameters[] = {       /* SEQUENCE */
+static const struct field_t _OpenLogicalChannel_forwardLogicalChannelParameters[] = {  /* SEQUENCE */
        {FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("dataType") CHOICE, 3, 6, 9, DECODE | EXT,
         offsetof(OpenLogicalChannel_forwardLogicalChannelParameters,
@@ -756,7 +756,7 @@ static field_t _OpenLogicalChannel_forwardLogicalChannelParameters[] = {    /* SEQU
        {FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters[] = {   /* CHOICE */
+static const struct field_t _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters[] = {      /* CHOICE */
        {FNAME("h223LogicalChannelParameters") SEQ, 0, 2, 2, SKIP | EXT, 0,
         _H223LogicalChannelParameters},
        {FNAME("v76LogicalChannelParameters") SEQ, 0, 5, 5, SKIP | EXT, 0,
@@ -767,7 +767,7 @@ static field_t _OpenLogicalChannel_reverseLogicalChannelParameters_multiplexPara
          h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
 };
 
-static field_t _OpenLogicalChannel_reverseLogicalChannelParameters[] = {       /* SEQUENCE */
+static const struct field_t _OpenLogicalChannel_reverseLogicalChannelParameters[] = {  /* SEQUENCE */
        {FNAME("dataType") CHOICE, 3, 6, 9, SKIP | EXT, 0, _DataType},
        {FNAME("multiplexParameters") CHOICE, 1, 2, 3, DECODE | EXT | OPT,
         offsetof(OpenLogicalChannel_reverseLogicalChannelParameters,
@@ -778,23 +778,23 @@ static field_t _OpenLogicalChannel_reverseLogicalChannelParameters[] = {  /* SEQU
        {FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _NetworkAccessParameters_distribution[] = {     /* CHOICE */
+static const struct field_t _NetworkAccessParameters_distribution[] = {        /* CHOICE */
        {FNAME("unicast") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("multicast") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _Q2931Address_address[] = {     /* CHOICE */
+static const struct field_t _Q2931Address_address[] = {        /* CHOICE */
        {FNAME("internationalNumber") NUMSTR, 4, 1, 0, SKIP, 0, NULL},
        {FNAME("nsapAddress") OCTSTR, 5, 1, 0, SKIP, 0, NULL},
 };
 
-static field_t _Q2931Address[] = {     /* SEQUENCE */
+static const struct field_t _Q2931Address[] = {        /* SEQUENCE */
        {FNAME("address") CHOICE, 1, 2, 2, SKIP | EXT, 0,
         _Q2931Address_address},
        {FNAME("subaddress") OCTSTR, 5, 1, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _NetworkAccessParameters_networkAddress[] = {   /* CHOICE */
+static const struct field_t _NetworkAccessParameters_networkAddress[] = {      /* CHOICE */
        {FNAME("q2931Address") SEQ, 1, 2, 2, SKIP | EXT, 0, _Q2931Address},
        {FNAME("e164Address") NUMDGT, 7, 1, 0, SKIP, 0, NULL},
        {FNAME("localAreaAddress") CHOICE, 1, 2, 2, DECODE | EXT,
@@ -802,7 +802,7 @@ static field_t _NetworkAccessParameters_networkAddress[] = {        /* CHOICE */
         _H245_TransportAddress},
 };
 
-static field_t _NetworkAccessParameters[] = {  /* SEQUENCE */
+static const struct field_t _NetworkAccessParameters[] = {     /* SEQUENCE */
        {FNAME("distribution") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0,
         _NetworkAccessParameters_distribution},
        {FNAME("networkAddress") CHOICE, 2, 3, 3, DECODE | EXT,
@@ -814,7 +814,7 @@ static field_t _NetworkAccessParameters[] = {       /* SEQUENCE */
         NULL},
 };
 
-static field_t _OpenLogicalChannel[] = {       /* SEQUENCE */
+static const struct field_t _OpenLogicalChannel[] = {  /* SEQUENCE */
        {FNAME("forwardLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("forwardLogicalChannelParameters") SEQ, 1, 3, 5, DECODE | EXT,
         offsetof(OpenLogicalChannel, forwardLogicalChannelParameters),
@@ -829,13 +829,13 @@ static field_t _OpenLogicalChannel[] = {  /* SEQUENCE */
        {FNAME("encryptionSync") SEQ, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
 };
 
-static field_t _Setup_UUIE_fastStart[] = {     /* SEQUENCE OF */
+static const struct field_t _Setup_UUIE_fastStart[] = {        /* SEQUENCE OF */
        {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
         sizeof(OpenLogicalChannel), _OpenLogicalChannel}
        ,
 };
 
-static field_t _Setup_UUIE[] = {       /* SEQUENCE */
+static const struct field_t _Setup_UUIE[] = {  /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
         offsetof(Setup_UUIE, h245Address), _TransportAddress},
@@ -894,13 +894,13 @@ static field_t _Setup_UUIE[] = {  /* SEQUENCE */
         NULL},
 };
 
-static field_t _CallProceeding_UUIE_fastStart[] = {    /* SEQUENCE OF */
+static const struct field_t _CallProceeding_UUIE_fastStart[] = {       /* SEQUENCE OF */
        {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
         sizeof(OpenLogicalChannel), _OpenLogicalChannel}
        ,
 };
 
-static field_t _CallProceeding_UUIE[] = {      /* SEQUENCE */
+static const struct field_t _CallProceeding_UUIE[] = { /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
         _EndpointType},
@@ -920,13 +920,13 @@ static field_t _CallProceeding_UUIE[] = { /* SEQUENCE */
        {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _Connect_UUIE_fastStart[] = {   /* SEQUENCE OF */
+static const struct field_t _Connect_UUIE_fastStart[] = {      /* SEQUENCE OF */
        {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
         sizeof(OpenLogicalChannel), _OpenLogicalChannel}
        ,
 };
 
-static field_t _Connect_UUIE[] = {     /* SEQUENCE */
+static const struct field_t _Connect_UUIE[] = {        /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("h245Address") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
         offsetof(Connect_UUIE, h245Address), _TransportAddress},
@@ -954,13 +954,13 @@ static field_t _Connect_UUIE[] = {        /* SEQUENCE */
        {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _Alerting_UUIE_fastStart[] = {  /* SEQUENCE OF */
+static const struct field_t _Alerting_UUIE_fastStart[] = {     /* SEQUENCE OF */
        {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
         sizeof(OpenLogicalChannel), _OpenLogicalChannel}
        ,
 };
 
-static field_t _Alerting_UUIE[] = {    /* SEQUENCE */
+static const struct field_t _Alerting_UUIE[] = {       /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
         _EndpointType},
@@ -986,7 +986,7 @@ static field_t _Alerting_UUIE[] = { /* SEQUENCE */
        {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _Information_UUIE[] = { /* SEQUENCE */
+static const struct field_t _Information_UUIE[] = {    /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("callIdentifier") SEQ, 0, 1, 1, SKIP | EXT, 0, NULL},
        {FNAME("tokens") SEQOF, SEMI, 0, 0, SKIP | OPT, 0, NULL},
@@ -996,7 +996,7 @@ static field_t _Information_UUIE[] = {      /* SEQUENCE */
        {FNAME("circuitInfo") SEQ, 3, 3, 3, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _ReleaseCompleteReason[] = {    /* CHOICE */
+static const struct field_t _ReleaseCompleteReason[] = {       /* CHOICE */
        {FNAME("noBandwidth") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("gatekeeperResources") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("unreachableDestination") NUL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -1022,7 +1022,7 @@ static field_t _ReleaseCompleteReason[] = {       /* CHOICE */
        {FNAME("tunnelledSignallingRejected") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _ReleaseComplete_UUIE[] = {     /* SEQUENCE */
+static const struct field_t _ReleaseComplete_UUIE[] = {        /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("reason") CHOICE, 4, 12, 22, SKIP | EXT | OPT, 0,
         _ReleaseCompleteReason},
@@ -1039,11 +1039,11 @@ static field_t _ReleaseComplete_UUIE[] = {      /* SEQUENCE */
        {FNAME("featureSet") SEQ, 3, 4, 4, SKIP | EXT | OPT, 0, NULL},
 };
 
-static field_t _Facility_UUIE_alternativeAliasAddress[] = {    /* SEQUENCE OF */
+static const struct field_t _Facility_UUIE_alternativeAliasAddress[] = {       /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _FacilityReason[] = {   /* CHOICE */
+static const struct field_t _FacilityReason[] = {      /* CHOICE */
        {FNAME("routeCallToGatekeeper") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("callForwarded") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("routeCallToMC") NUL, FIXD, 0, 0, SKIP, 0, NULL},
@@ -1057,13 +1057,13 @@ static field_t _FacilityReason[] = {    /* CHOICE */
        {FNAME("transportedInformation") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _Facility_UUIE_fastStart[] = {  /* SEQUENCE OF */
+static const struct field_t _Facility_UUIE_fastStart[] = {     /* SEQUENCE OF */
        {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
         sizeof(OpenLogicalChannel), _OpenLogicalChannel}
        ,
 };
 
-static field_t _Facility_UUIE[] = {    /* SEQUENCE */
+static const struct field_t _Facility_UUIE[] = {       /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("alternativeAddress") CHOICE, 3, 7, 7, DECODE | EXT | OPT,
         offsetof(Facility_UUIE, alternativeAddress), _TransportAddress},
@@ -1094,17 +1094,17 @@ static field_t _Facility_UUIE[] = {     /* SEQUENCE */
         NULL},
 };
 
-static field_t _CallIdentifier[] = {   /* SEQUENCE */
+static const struct field_t _CallIdentifier[] = {      /* SEQUENCE */
        {FNAME("guid") OCTSTR, FIXD, 16, 0, SKIP, 0, NULL},
 };
 
-static field_t _SecurityServiceMode[] = {      /* CHOICE */
+static const struct field_t _SecurityServiceMode[] = { /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0, _NonStandardParameter},
        {FNAME("none") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("default") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _SecurityCapabilities[] = {     /* SEQUENCE */
+static const struct field_t _SecurityCapabilities[] = {        /* SEQUENCE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("encryption") CHOICE, 2, 3, 3, SKIP | EXT, 0,
@@ -1115,30 +1115,30 @@ static field_t _SecurityCapabilities[] = {      /* SEQUENCE */
         _SecurityServiceMode},
 };
 
-static field_t _H245Security[] = {     /* CHOICE */
+static const struct field_t _H245Security[] = {        /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 2, 2, SKIP, 0, _NonStandardParameter},
        {FNAME("noSecurity") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("tls") SEQ, 1, 4, 4, SKIP | EXT, 0, _SecurityCapabilities},
        {FNAME("ipsec") SEQ, 1, 4, 4, SKIP | EXT, 0, _SecurityCapabilities},
 };
 
-static field_t _DHset[] = {    /* SEQUENCE */
+static const struct field_t _DHset[] = {       /* SEQUENCE */
        {FNAME("halfkey") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
        {FNAME("modSize") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
        {FNAME("generator") BITSTR, WORD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _TypedCertificate[] = { /* SEQUENCE */
+static const struct field_t _TypedCertificate[] = {    /* SEQUENCE */
        {FNAME("type") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("certificate") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _H235_NonStandardParameter[] = {        /* SEQUENCE */
+static const struct field_t _H235_NonStandardParameter[] = {   /* SEQUENCE */
        {FNAME("nonStandardIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("data") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _ClearToken[] = {       /* SEQUENCE */
+static const struct field_t _ClearToken[] = {  /* SEQUENCE */
        {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("timeStamp") INT, CONS, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("password") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
@@ -1154,120 +1154,120 @@ static field_t _ClearToken[] = {      /* SEQUENCE */
        {FNAME("sendersID") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _Progress_UUIE_tokens[] = {     /* SEQUENCE OF */
+static const struct field_t _Progress_UUIE_tokens[] = {        /* SEQUENCE OF */
        {FNAME("item") SEQ, 8, 9, 11, SKIP | EXT, 0, _ClearToken},
 };
 
-static field_t _Params[] = {   /* SEQUENCE */
+static const struct field_t _Params[] = {      /* SEQUENCE */
        {FNAME("ranInt") INT, UNCO, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("iv8") OCTSTR, FIXD, 8, 0, SKIP | OPT, 0, NULL},
        {FNAME("iv16") OCTSTR, FIXD, 16, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoEPPwdHash_token[] = {    /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoEPPwdHash_token[] = {       /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoEPPwdHash[] = {  /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoEPPwdHash[] = {     /* SEQUENCE */
        {FNAME("alias") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
        {FNAME("timeStamp") INT, CONS, 1, 0, SKIP, 0, NULL},
        {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
         _CryptoH323Token_cryptoEPPwdHash_token},
 };
 
-static field_t _CryptoH323Token_cryptoGKPwdHash_token[] = {    /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoGKPwdHash_token[] = {       /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoGKPwdHash[] = {  /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoGKPwdHash[] = {     /* SEQUENCE */
        {FNAME("gatekeeperId") BMPSTR, 7, 1, 0, SKIP, 0, NULL},
        {FNAME("timeStamp") INT, CONS, 1, 0, SKIP, 0, NULL},
        {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
         _CryptoH323Token_cryptoGKPwdHash_token},
 };
 
-static field_t _CryptoH323Token_cryptoEPPwdEncr[] = {  /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoEPPwdEncr[] = {     /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoGKPwdEncr[] = {  /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoGKPwdEncr[] = {     /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoEPCert[] = {     /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoEPCert[] = {        /* SEQUENCE */
        {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoGKCert[] = {     /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoGKCert[] = {        /* SEQUENCE */
        {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoH323Token_cryptoFastStart[] = {  /* SEQUENCE */
+static const struct field_t _CryptoH323Token_cryptoFastStart[] = {     /* SEQUENCE */
        {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoToken_cryptoEncryptedToken_token[] = {   /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoEncryptedToken_token[] = {      /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoToken_cryptoEncryptedToken[] = { /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoEncryptedToken[] = {    /* SEQUENCE */
        {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
         _CryptoToken_cryptoEncryptedToken_token},
 };
 
-static field_t _CryptoToken_cryptoSignedToken_token[] = {      /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoSignedToken_token[] = { /* SEQUENCE */
        {FNAME("toBeSigned") SEQ, 8, 9, 11, SKIP | OPEN | EXT, 0, NULL},
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("signature") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoToken_cryptoSignedToken[] = {    /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoSignedToken[] = {       /* SEQUENCE */
        {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("token") SEQ, 0, 4, 4, SKIP, 0,
         _CryptoToken_cryptoSignedToken_token},
 };
 
-static field_t _CryptoToken_cryptoHashedToken_token[] = {      /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoHashedToken_token[] = { /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("hash") BITSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoToken_cryptoHashedToken[] = {    /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoHashedToken[] = {       /* SEQUENCE */
        {FNAME("tokenOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("hashedVals") SEQ, 8, 9, 11, SKIP | EXT, 0, _ClearToken},
        {FNAME("token") SEQ, 0, 3, 3, SKIP, 0,
         _CryptoToken_cryptoHashedToken_token},
 };
 
-static field_t _CryptoToken_cryptoPwdEncr[] = {        /* SEQUENCE */
+static const struct field_t _CryptoToken_cryptoPwdEncr[] = {   /* SEQUENCE */
        {FNAME("algorithmOID") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("paramS") SEQ, 2, 2, 3, SKIP | EXT, 0, _Params},
        {FNAME("encryptedData") OCTSTR, SEMI, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _CryptoToken[] = {      /* CHOICE */
+static const struct field_t _CryptoToken[] = { /* CHOICE */
        {FNAME("cryptoEncryptedToken") SEQ, 0, 2, 2, SKIP, 0,
         _CryptoToken_cryptoEncryptedToken},
        {FNAME("cryptoSignedToken") SEQ, 0, 2, 2, SKIP, 0,
@@ -1278,7 +1278,7 @@ static field_t _CryptoToken[] = { /* CHOICE */
         _CryptoToken_cryptoPwdEncr},
 };
 
-static field_t _CryptoH323Token[] = {  /* CHOICE */
+static const struct field_t _CryptoH323Token[] = {     /* CHOICE */
        {FNAME("cryptoEPPwdHash") SEQ, 0, 3, 3, SKIP, 0,
         _CryptoH323Token_cryptoEPPwdHash},
        {FNAME("cryptoGKPwdHash") SEQ, 0, 3, 3, SKIP, 0,
@@ -1297,17 +1297,17 @@ static field_t _CryptoH323Token[] = {   /* CHOICE */
         _CryptoToken},
 };
 
-static field_t _Progress_UUIE_cryptoTokens[] = {       /* SEQUENCE OF */
+static const struct field_t _Progress_UUIE_cryptoTokens[] = {  /* SEQUENCE OF */
        {FNAME("item") CHOICE, 3, 8, 8, SKIP | EXT, 0, _CryptoH323Token},
 };
 
-static field_t _Progress_UUIE_fastStart[] = {  /* SEQUENCE OF */
+static const struct field_t _Progress_UUIE_fastStart[] = {     /* SEQUENCE OF */
        {FNAME("item") SEQ, 1, 3, 5, DECODE | OPEN | EXT,
         sizeof(OpenLogicalChannel), _OpenLogicalChannel}
        ,
 };
 
-static field_t _Progress_UUIE[] = {    /* SEQUENCE */
+static const struct field_t _Progress_UUIE[] = {       /* SEQUENCE */
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("destinationInfo") SEQ, 6, 8, 10, SKIP | EXT, 0,
         _EndpointType},
@@ -1328,7 +1328,7 @@ static field_t _Progress_UUIE[] = {       /* SEQUENCE */
        {FNAME("fastConnectRefused") NUL, FIXD, 0, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _H323_UU_PDU_h323_message_body[] = {    /* CHOICE */
+static const struct field_t _H323_UU_PDU_h323_message_body[] = {       /* CHOICE */
        {FNAME("setup") SEQ, 7, 13, 39, DECODE | EXT,
         offsetof(H323_UU_PDU_h323_message_body, setup), _Setup_UUIE},
        {FNAME("callProceeding") SEQ, 1, 3, 12, DECODE | EXT,
@@ -1352,7 +1352,7 @@ static field_t _H323_UU_PDU_h323_message_body[] = {       /* CHOICE */
        {FNAME("notify") SEQ, 2, 4, 4, SKIP | EXT, 0, NULL},
 };
 
-static field_t _RequestMessage[] = {   /* CHOICE */
+static const struct field_t _RequestMessage[] = {      /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
        {FNAME("masterSlaveDetermination") SEQ, 0, 2, 2, STOP | EXT, 0, NULL},
        {FNAME("terminalCapabilitySet") SEQ, 3, 5, 5, STOP | EXT, 0, NULL},
@@ -1372,7 +1372,7 @@ static field_t _RequestMessage[] = {      /* CHOICE */
         NULL},
 };
 
-static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters[] = {        /* CHOICE */
+static const struct field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters[] = {   /* CHOICE */
        {FNAME("h222LogicalChannelParameters") SEQ, 3, 5, 5, SKIP | EXT, 0,
         _H222LogicalChannelParameters},
        {FNAME("h2250LogicalChannelParameters") SEQ, 10, 11, 14, DECODE | EXT,
@@ -1381,7 +1381,7 @@ static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexP
          h2250LogicalChannelParameters), _H2250LogicalChannelParameters},
 };
 
-static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters[] = {    /* SEQUENCE */
+static const struct field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters[] = {       /* SEQUENCE */
        {FNAME("reverseLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
        {FNAME("multiplexParameters") CHOICE, 0, 1, 2, DECODE | EXT | OPT,
@@ -1391,11 +1391,11 @@ static field_t _OpenLogicalChannelAck_reverseLogicalChannelParameters[] = {     /* S
        {FNAME("replacementFor") INT, WORD, 1, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _H2250LogicalChannelAckParameters_nonStandard[] = {     /* SEQUENCE OF */
+static const struct field_t _H2250LogicalChannelAckParameters_nonStandard[] = {        /* SEQUENCE OF */
        {FNAME("item") SEQ, 0, 2, 2, SKIP, 0, _H245_NonStandardParameter},
 };
 
-static field_t _H2250LogicalChannelAckParameters[] = { /* SEQUENCE */
+static const struct field_t _H2250LogicalChannelAckParameters[] = {    /* SEQUENCE */
        {FNAME("nonStandard") SEQOF, SEMI, 0, 0, SKIP | OPT, 0,
         _H2250LogicalChannelAckParameters_nonStandard},
        {FNAME("sessionID") INT, 8, 1, 0, SKIP | OPT, 0, NULL},
@@ -1410,14 +1410,14 @@ static field_t _H2250LogicalChannelAckParameters[] = {  /* SEQUENCE */
        {FNAME("portNumber") INT, WORD, 0, 0, SKIP | OPT, 0, NULL},
 };
 
-static field_t _OpenLogicalChannelAck_forwardMultiplexAckParameters[] = {      /* CHOICE */
+static const struct field_t _OpenLogicalChannelAck_forwardMultiplexAckParameters[] = { /* CHOICE */
        {FNAME("h2250LogicalChannelAckParameters") SEQ, 5, 5, 7, DECODE | EXT,
         offsetof(OpenLogicalChannelAck_forwardMultiplexAckParameters,
                  h2250LogicalChannelAckParameters),
         _H2250LogicalChannelAckParameters},
 };
 
-static field_t _OpenLogicalChannelAck[] = {    /* SEQUENCE */
+static const struct field_t _OpenLogicalChannelAck[] = {       /* SEQUENCE */
        {FNAME("forwardLogicalChannelNumber") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("reverseLogicalChannelParameters") SEQ, 2, 3, 4,
         DECODE | EXT | OPT, offsetof(OpenLogicalChannelAck,
@@ -1433,7 +1433,7 @@ static field_t _OpenLogicalChannelAck[] = {       /* SEQUENCE */
        {FNAME("encryptionSync") SEQ, 2, 4, 4, STOP | EXT | OPT, 0, NULL},
 };
 
-static field_t _ResponseMessage[] = {  /* CHOICE */
+static const struct field_t _ResponseMessage[] = {     /* CHOICE */
        {FNAME("nonStandard") SEQ, 0, 1, 1, STOP | EXT, 0, NULL},
        {FNAME("masterSlaveDeterminationAck") SEQ, 0, 1, 1, STOP | EXT, 0,
         NULL},
@@ -1469,7 +1469,7 @@ static field_t _ResponseMessage[] = {     /* CHOICE */
        {FNAME("logicalChannelRateReject") SEQ, 1, 4, 4, STOP | EXT, 0, NULL},
 };
 
-static field_t _MultimediaSystemControlMessage[] = {   /* CHOICE */
+static const struct field_t _MultimediaSystemControlMessage[] = {      /* CHOICE */
        {FNAME("request") CHOICE, 4, 11, 15, DECODE | EXT,
         offsetof(MultimediaSystemControlMessage, request), _RequestMessage},
        {FNAME("response") CHOICE, 5, 19, 24, DECODE | EXT,
@@ -1479,14 +1479,14 @@ static field_t _MultimediaSystemControlMessage[] = {    /* CHOICE */
        {FNAME("indication") CHOICE, 4, 14, 23, STOP | EXT, 0, NULL},
 };
 
-static field_t _H323_UU_PDU_h245Control[] = {  /* SEQUENCE OF */
+static const struct field_t _H323_UU_PDU_h245Control[] = {     /* SEQUENCE OF */
        {FNAME("item") CHOICE, 2, 4, 4, DECODE | OPEN | EXT,
         sizeof(MultimediaSystemControlMessage),
         _MultimediaSystemControlMessage}
        ,
 };
 
-static field_t _H323_UU_PDU[] = {      /* SEQUENCE */
+static const struct field_t _H323_UU_PDU[] = { /* SEQUENCE */
        {FNAME("h323-message-body") CHOICE, 3, 7, 13, DECODE | EXT,
         offsetof(H323_UU_PDU, h323_message_body),
         _H323_UU_PDU_h323_message_body},
@@ -1507,13 +1507,13 @@ static field_t _H323_UU_PDU[] = {       /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _H323_UserInformation[] = {     /* SEQUENCE */
+static const struct field_t _H323_UserInformation[] = {        /* SEQUENCE */
        {FNAME("h323-uu-pdu") SEQ, 1, 2, 11, DECODE | EXT,
         offsetof(H323_UserInformation, h323_uu_pdu), _H323_UU_PDU},
        {FNAME("user-data") SEQ, 0, 2, 2, STOP | EXT | OPT, 0, NULL},
 };
 
-static field_t _GatekeeperRequest[] = {        /* SEQUENCE */
+static const struct field_t _GatekeeperRequest[] = {   /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
@@ -1537,7 +1537,7 @@ static field_t _GatekeeperRequest[] = {   /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _GatekeeperConfirm[] = {        /* SEQUENCE */
+static const struct field_t _GatekeeperConfirm[] = {   /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
@@ -1557,23 +1557,23 @@ static field_t _GatekeeperConfirm[] = { /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _RegistrationRequest_callSignalAddress[] = {    /* SEQUENCE OF */
+static const struct field_t _RegistrationRequest_callSignalAddress[] = {       /* SEQUENCE OF */
        {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
         sizeof(TransportAddress), _TransportAddress}
        ,
 };
 
-static field_t _RegistrationRequest_rasAddress[] = {   /* SEQUENCE OF */
+static const struct field_t _RegistrationRequest_rasAddress[] = {      /* SEQUENCE OF */
        {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
         sizeof(TransportAddress), _TransportAddress}
        ,
 };
 
-static field_t _RegistrationRequest_terminalAlias[] = {        /* SEQUENCE OF */
+static const struct field_t _RegistrationRequest_terminalAlias[] = {   /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _RegistrationRequest[] = {      /* SEQUENCE */
+static const struct field_t _RegistrationRequest[] = { /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
@@ -1621,17 +1621,17 @@ static field_t _RegistrationRequest[] = {       /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _RegistrationConfirm_callSignalAddress[] = {    /* SEQUENCE OF */
+static const struct field_t _RegistrationConfirm_callSignalAddress[] = {       /* SEQUENCE OF */
        {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
         sizeof(TransportAddress), _TransportAddress}
        ,
 };
 
-static field_t _RegistrationConfirm_terminalAlias[] = {        /* SEQUENCE OF */
+static const struct field_t _RegistrationConfirm_terminalAlias[] = {   /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _RegistrationConfirm[] = {      /* SEQUENCE */
+static const struct field_t _RegistrationConfirm[] = { /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("protocolIdentifier") OID, BYTE, 0, 0, SKIP, 0, NULL},
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
@@ -1667,13 +1667,13 @@ static field_t _RegistrationConfirm[] = {       /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _UnregistrationRequest_callSignalAddress[] = {  /* SEQUENCE OF */
+static const struct field_t _UnregistrationRequest_callSignalAddress[] = {     /* SEQUENCE OF */
        {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
         sizeof(TransportAddress), _TransportAddress}
        ,
 };
 
-static field_t _UnregistrationRequest[] = {    /* SEQUENCE */
+static const struct field_t _UnregistrationRequest[] = {       /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("callSignalAddress") SEQOF, SEMI, 0, 10, DECODE,
         offsetof(UnregistrationRequest, callSignalAddress),
@@ -1694,24 +1694,24 @@ static field_t _UnregistrationRequest[] = {     /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _CallModel[] = {        /* CHOICE */
+static const struct field_t _CallModel[] = {   /* CHOICE */
        {FNAME("direct") NUL, FIXD, 0, 0, SKIP, 0, NULL},
        {FNAME("gatekeeperRouted") NUL, FIXD, 0, 0, SKIP, 0, NULL},
 };
 
-static field_t _AdmissionRequest_destinationInfo[] = { /* SEQUENCE OF */
+static const struct field_t _AdmissionRequest_destinationInfo[] = {    /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _AdmissionRequest_destExtraCallInfo[] = {       /* SEQUENCE OF */
+static const struct field_t _AdmissionRequest_destExtraCallInfo[] = {  /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _AdmissionRequest_srcInfo[] = { /* SEQUENCE OF */
+static const struct field_t _AdmissionRequest_srcInfo[] = {    /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _AdmissionRequest[] = { /* SEQUENCE */
+static const struct field_t _AdmissionRequest[] = {    /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("callType") CHOICE, 2, 4, 4, SKIP | EXT, 0, _CallType},
        {FNAME("callModel") CHOICE, 1, 2, 2, SKIP | EXT | OPT, 0, _CallModel},
@@ -1755,7 +1755,7 @@ static field_t _AdmissionRequest[] = {    /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _AdmissionConfirm[] = { /* SEQUENCE */
+static const struct field_t _AdmissionConfirm[] = {    /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("bandWidth") INT, CONS, 0, 0, SKIP, 0, NULL},
        {FNAME("callModel") CHOICE, 1, 2, 2, SKIP | EXT, 0, _CallModel},
@@ -1790,11 +1790,11 @@ static field_t _AdmissionConfirm[] = {  /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _LocationRequest_destinationInfo[] = {  /* SEQUENCE OF */
+static const struct field_t _LocationRequest_destinationInfo[] = {     /* SEQUENCE OF */
        {FNAME("item") CHOICE, 1, 2, 7, SKIP | EXT, 0, _AliasAddress},
 };
 
-static field_t _LocationRequest[] = {  /* SEQUENCE */
+static const struct field_t _LocationRequest[] = {     /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("endpointIdentifier") BMPSTR, 7, 1, 0, SKIP | OPT, 0, NULL},
        {FNAME("destinationInfo") SEQOF, SEMI, 0, 0, SKIP, 0,
@@ -1818,7 +1818,7 @@ static field_t _LocationRequest[] = {     /* SEQUENCE */
        {FNAME("circuitInfo") SEQ, 3, 3, 3, STOP | EXT | OPT, 0, NULL},
 };
 
-static field_t _LocationConfirm[] = {  /* SEQUENCE */
+static const struct field_t _LocationConfirm[] = {     /* SEQUENCE */
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
        {FNAME("callSignalAddress") CHOICE, 3, 7, 7, DECODE | EXT,
         offsetof(LocationConfirm, callSignalAddress), _TransportAddress},
@@ -1844,13 +1844,13 @@ static field_t _LocationConfirm[] = {   /* SEQUENCE */
        {FNAME("serviceControl") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _InfoRequestResponse_callSignalAddress[] = {    /* SEQUENCE OF */
+static const struct field_t _InfoRequestResponse_callSignalAddress[] = {       /* SEQUENCE OF */
        {FNAME("item") CHOICE, 3, 7, 7, DECODE | EXT,
         sizeof(TransportAddress), _TransportAddress}
        ,
 };
 
-static field_t _InfoRequestResponse[] = {      /* SEQUENCE */
+static const struct field_t _InfoRequestResponse[] = { /* SEQUENCE */
        {FNAME("nonStandardData") SEQ, 0, 2, 2, SKIP | OPT, 0,
         _NonStandardParameter},
        {FNAME("requestSeqNum") INT, WORD, 1, 0, SKIP, 0, NULL},
@@ -1873,7 +1873,7 @@ static field_t _InfoRequestResponse[] = { /* SEQUENCE */
        {FNAME("genericData") SEQOF, SEMI, 0, 0, STOP | OPT, 0, NULL},
 };
 
-static field_t _RasMessage[] = {       /* CHOICE */
+static const struct field_t _RasMessage[] = {  /* CHOICE */
        {FNAME("gatekeeperRequest") SEQ, 4, 8, 18, DECODE | EXT,
         offsetof(RasMessage, gatekeeperRequest), _GatekeeperRequest},
        {FNAME("gatekeeperConfirm") SEQ, 2, 5, 14, DECODE | EXT,