diff options
| author | Pau Espin Pedrol <pespin@sysmocom.de> | 2023-07-26 19:00:30 +0200 |
|---|---|---|
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2023-07-26 19:00:32 +0200 |
| commit | f4fca416e2f619b37146e2a026afa83d0f5eae90 (patch) | |
| tree | 10f762671d1790d46cf878a7b20967e6e52b84f6 | |
| parent | 678daf22cace561d0a0af5e393702ad451fa766c (diff) | |
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
| -rw-r--r-- | include/osmocom/gprs/llc/llc_private.h | 4 | ||||
| -rw-r--r-- | src/llc/llc_xid.c | 33 |
2 files changed, 26 insertions, 11 deletions
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 @@ int gprs_llc_xid_encode(uint8_t *data, size_t data_len, 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 @@ static const struct { [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 @@ bool gprs_llc_xid_field_is_valid(const struct gprs_llc_xid_field *field) 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 @@ int gprs_llc_xid_encode(uint8_t *data, size_t data_len, 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 @@ int gprs_llc_xid_encode(uint8_t *data, size_t data_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)) { if (wptr + len - data > data_len) return -EINVAL; memcpy(wptr, field->var.val, len); @@ -240,7 +255,7 @@ int gprs_llc_xid_decode(struct gprs_llc_xid_field *fields, 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 @@ int gprs_llc_xid_decode(struct gprs_llc_xid_field *fields, /* 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; |