pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmo-gprs/+/33946 ) Change subject: llc: xid: Introduce some helper internal functions to make code easier to follow ...................................................................... llc: xid: Introduce some helper internal functions to make code easier to follow Take the chance to fix wrong indentation on related function parameter. Change-Id: I8c0163583efc2720a4b2675ce93293c184f80d0c --- M include/osmocom/gprs/llc/llc_private.h M src/llc/llc_xid.c 2 files changed, 37 insertions(+), 11 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmo-gprs refs/changes/46/33946/1 diff --git a/include/osmocom/gprs/llc/llc_private.h b/include/osmocom/gprs/llc/llc_private.h index 44d32e2..b2b9047 100644 --- a/include/osmocom/gprs/llc/llc_private.h +++ b/include/osmocom/gprs/llc/llc_private.h @@ -343,8 +343,8 @@ const struct gprs_llc_xid_field *fields, unsigned int num_fields); struct gprs_llc_xid_field *gprs_llc_xid_deepcopy(void *ctx, - const struct gprs_llc_xid_field *src_xid, - size_t src_xid_len); + const struct gprs_llc_xid_field *src_xid, + size_t src_xid_len); /* llc_pdu.c: */ int gprs_llc_pdu_decode(struct gprs_llc_pdu_decoded *pdu, diff --git a/src/llc/llc_xid.c b/src/llc/llc_xid.c index deeeaa7..9280416 100644 --- a/src/llc/llc_xid.c +++ b/src/llc/llc_xid.c @@ -76,6 +76,24 @@ [OSMO_GPRS_LLC_XID_T_MAC_IOV_UI] = { .len = 4, .min = 0, .max = UINT32_MAX }, }; +static inline bool gprs_llc_xid_type_is_variable_len(enum gprs_llc_xid_type t) +{ + return gprs_llc_xid_desc[t].var_len; +} + +static inline bool gprs_llc_xid_type_is_fixed_len(enum gprs_llc_xid_type t) +{ + return !gprs_llc_xid_desc[t].var_len; +} + +static inline uint8_t gprs_llc_xid_field_get_len(const struct gprs_llc_xid_field *field) +{ + if (gprs_llc_xid_type_is_variable_len(field->type)) + return field->var.val_len; + else + return gprs_llc_xid_desc[field->type].len; +} + bool gprs_llc_xid_field_is_valid(const struct gprs_llc_xid_field *field) { if (field->type >= ARRAY_SIZE(gprs_llc_xid_desc)) { @@ -84,7 +102,7 @@ return false; } - if (gprs_llc_xid_desc[field->type].var_len) + if (gprs_llc_xid_type_is_variable_len(field->type)) return true; if (field->var.val_len > 0) { @@ -139,10 +157,7 @@ hdr[0] = (field->type & 0x1f) << 2; /* XID field length */ - if (gprs_llc_xid_desc[field->type].var_len) - len = field->var.val_len; - else - len = gprs_llc_xid_desc[field->type].len; + len = gprs_llc_xid_field_get_len(field); if (len == 0) continue; @@ -158,7 +173,7 @@ } /* XID field value (variable length) */ - if (gprs_llc_xid_desc[field->type].var_len) { + if (gprs_llc_xid_type_is_variable_len(field->type)) { if (wptr + len - data > data_len) return -EINVAL; memcpy(wptr, field->var.val, len); @@ -240,7 +255,7 @@ data_len -= len; /* XID field value (variable length) */ - if (gprs_llc_xid_desc[field->type].var_len) { + if (gprs_llc_xid_type_is_variable_len(field->type)) { field->var.val = len ? ptr : NULL; field->var.val_len = len; } else { @@ -285,8 +300,8 @@ /* Return Deep copy of a xid_field array allocated using talloc ctx. */ struct gprs_llc_xid_field *gprs_llc_xid_deepcopy(void *ctx, - const struct gprs_llc_xid_field *src_xid, - size_t src_xid_len) + const struct gprs_llc_xid_field *src_xid, + size_t src_xid_len) { size_t bytes_len = sizeof(*src_xid) * src_xid_len; struct gprs_llc_xid_field *dst_xid; -- To view, visit https://gerrit.osmocom.org/c/libosmo-gprs/+/33946 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmo-gprs Gerrit-Branch: master Gerrit-Change-Id: I8c0163583efc2720a4b2675ce93293c184f80d0c Gerrit-Change-Number: 33946 Gerrit-PatchSet: 1 Gerrit-Owner: pespin <pespin@sysmocom.de> Gerrit-MessageType: newchange