diff options
Diffstat (limited to 'include/osmocom/sgsn/gprs_sndcp_xid.h')
| -rw-r--r-- | include/osmocom/sgsn/gprs_sndcp_xid.h | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/include/osmocom/sgsn/gprs_sndcp_xid.h b/include/osmocom/sgsn/gprs_sndcp_xid.h index e64bc5237..0dce43e40 100644 --- a/include/osmocom/sgsn/gprs_sndcp_xid.h +++ b/include/osmocom/sgsn/gprs_sndcp_xid.h @@ -32,6 +32,24 @@ #define MAX_NSAPI 11 /* Maximum number usable NSAPIs */ #define MAX_ROHC 16 /* Maximum number of ROHC compression profiles */ +/* According to: 3GPP TS 44.065, 6.5.1.1.4 Algorithm identifier */ +enum gprs_sndcp_hdr_comp_algo { + RFC_1144, /* TCP/IP header compression, see also 6.5.2 */ + RFC_2507, /* TCP/UDP/IP header compression, see also: 6.5.3 */ + ROHC /* Robust Header Compression, see also 6.5.4 */ +}; + +/* According to: 3GPP TS 44.065, 6.5.1.1.4 Algorithm identifier */ +enum gprs_sndcp_data_comp_algo { + V42BIS, /* V.42bis data compression, see also 6.6.2 */ + V44 /* V44 data compression, see also: 6.6.3 */ +}; + +union gprs_sndcp_comp_algo { + enum gprs_sndcp_hdr_comp_algo pcomp; + enum gprs_sndcp_data_comp_algo dcomp; +}; + /* According to: 3GPP TS 44.065, 6.5.1.1 Format of the protocol control * information compression field (Figure 7) and 3GPP TS 44.065, * 6.6.1.1 Format of the data compression field (Figure 9) */ @@ -45,7 +63,7 @@ struct gprs_sndcp_comp_field { unsigned int entity; /* Algorithm identifier, see also: 6.5.1.1.4 and 6.6.1.1.4 */ - int algo; + union gprs_sndcp_comp_algo algo; /* Number of contained PCOMP / DCOMP values */ uint8_t comp_len; @@ -62,24 +80,12 @@ struct gprs_sndcp_comp_field { struct gprs_sndcp_dcomp_v44_params *v44_params; }; -/* According to: 3GPP TS 44.065, 6.5.1.1.4 Algorithm identifier */ -enum gprs_sndcp_hdr_comp_algo { - RFC_1144, /* TCP/IP header compression, see also 6.5.2 */ - RFC_2507, /* TCP/UDP/IP header compression, see also: 6.5.3 */ - ROHC /* Robust Header Compression, see also 6.5.4 */ -}; - -/* According to: 3GPP TS 44.065, 6.5.1.1.4 Algorithm identifier */ -enum gprs_sndcp_data_comp_algo { - V42BIS, /* V.42bis data compression, see also 6.6.2 */ - V44 /* V44 data compression, see also: 6.6.3 */ -}; - /* According to: 3GPP TS 44.065, 8 SNDCP XID parameters */ enum gprs_sndcp_xid_param_types { SNDCP_XID_VERSION_NUMBER, SNDCP_XID_DATA_COMPRESSION, /* See also: subclause 6.6.1 */ SNDCP_XID_PROTOCOL_COMPRESSION, /* See also: subclause 6.5.1 */ + SNDCP_XID_INVALID_COMPRESSION /* Not part of the spec; this means we found an invalid value */ }; /* According to: 3GPP TS 44.065, 6.5.2.1 Parameters (Table 5) */ @@ -209,7 +215,7 @@ struct llist_head *gprs_sndcp_parse_xid(int *version, /* Find out to which compression class the specified comp-field belongs * (header compression or data compression?) */ -int gprs_sndcp_get_compression_class( +enum gprs_sndcp_xid_param_types gprs_sndcp_get_compression_class( const struct gprs_sndcp_comp_field *comp_field); /* Dump a list with SNDCP-XID fields (Debug) */ |