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OM2000: Add fault report parsing 

This patch adds parsing for OM2000 MO fault report map parsing,
the bits in the fault maps are counted out and displayed.

Change-Id: I6e2928f39b09bc08e9ab78bc10bc81e07f7eb55d
This commit is contained in:
Philipp Maier 2016-10-19 10:14:35 +02:00 committed by Harald Welte
parent 7975ddf0ec
commit 8136e4b9af
1 changed files with 129 additions and 1 deletions
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130
openbsc/src/libbsc/abis_om2000.c
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@ -238,6 +238,7 @@ enum abis_om2k_dei {
OM2K_DEI_POWER = 0x2f,
OM2K_DEI_REASON_CODE = 0x32,
OM2K_DEI_RX_DIVERSITY = 0x33,
OM2K_DEI_REPL_UNIT_MAP = 0x34,
OM2K_DEI_RESULT_CODE = 0x35,
OM2K_DEI_T3105 = 0x38,
OM2K_DEI_TF_MODE = 0x3a,
@ -252,7 +253,7 @@ enum abis_om2k_dei {
OM2K_DEI_RSL_FUNC_MAP_2 = 0x46,
OM2K_DEI_EXT_RANGE = 0x47,
OM2K_DEI_REQ_IND = 0x48,
OM2K_DEI_REPL_UNIT_MAP = 0x50,
OM2K_DEI_REPL_UNIT_MAP_EXT = 0x50,
OM2K_DEI_ICM_BOUND_PARAMS = 0x74,
OM2K_DEI_LSC = 0x79,
OM2K_DEI_LSC_FILT_TIME = 0x7a,
@ -268,6 +269,7 @@ enum abis_om2k_dei {
OM2K_DEI_INTERF_REJ_COMB = 0x94,
OM2K_DEI_FS_OFFSET = 0x98,
OM2K_DEI_EXT_COND_MAP_2_EXT = 0x9c,
OM2K_DEI_TSS_MO_STATE = 0x9d,
};
const struct tlv_definition om2k_att_tlvdef = {
@ -322,6 +324,7 @@ const struct tlv_definition om2k_att_tlvdef = {
[OM2K_DEI_EXT_RANGE] = { TLV_TYPE_TV },
[OM2K_DEI_REQ_IND] = { TLV_TYPE_TV },
[OM2K_DEI_REPL_UNIT_MAP] = { TLV_TYPE_FIXED, 6 },
[OM2K_DEI_REPL_UNIT_MAP_EXT] = {TLV_TYPE_FIXED, 6},
[OM2K_DEI_ICM_BOUND_PARAMS] = { TLV_TYPE_FIXED, 5 },
[OM2K_DEI_LSC] = { TLV_TYPE_TV },
[OM2K_DEI_LSC_FILT_TIME] = { TLV_TYPE_TV },
@ -337,6 +340,7 @@ const struct tlv_definition om2k_att_tlvdef = {
[OM2K_DEI_INTERF_REJ_COMB] = { TLV_TYPE_TV },
[OM2K_DEI_FS_OFFSET] = { TLV_TYPE_FIXED, 5 },
[OM2K_DEI_EXT_COND_MAP_2_EXT] = { TLV_TYPE_FIXED, 4 },
[OM2K_DEI_TSS_MO_STATE] = { TLV_TYPE_FIXED, 4 },
},
};
@ -2369,6 +2373,129 @@ static int process_mo_state(struct gsm_bts *bts, struct om2k_decoded_msg *odm)
return 0;
}
/* Display fault report bits (helper function of display_fault_maps()) */
static bool display_fault_bits(const uint8_t *vect, unsigned int len,
uint8_t dei, const struct abis_om2k_mo *mo)
{
int i;
int k;
bool faults_present = false;
int first = 1;
char string[255];
/* Check if errors are present at all */
for (i = 0; i < len; i++)
if (vect[i])
faults_present = true;
if (!faults_present)
return false;
sprintf(string, "Fault Report: %s (",
get_value_string(om2k_attr_vals, dei));
for (i = 0; i < len; i++) {
for (k = 0; k < 8; k++) {
if ((vect[i] >> k) & 1) {
if (!first)
sprintf(string + strlen(string), ",");
sprintf(string + strlen(string), "%d", k + i*8);
first = 0;
}
}
}
sprintf(string + strlen(string), ")\n");
DEBUGP(DNM, "Rx MO=%s %s", om2k_mo_name(mo), string);
return true;
}
/* Display fault report maps */
static void display_fault_maps(const uint8_t *src, unsigned int src_len,
const struct abis_om2k_mo *mo)
{
uint8_t tag;
uint16_t tag_len;
const uint8_t *val;
int src_pos = 0;
int rc;
int tlv_count = 0;
uint16_t msg_code;
bool faults_present = false;
/* Chop off header */
src+=4;
src_len-=4;
/* Check message type */
msg_code = (*src & 0xff) << 8;
src++;
src_len--;
msg_code |= (*src & 0xff);
src++;
src_len--;
if (msg_code != OM2K_MSGT_FAULT_REP) {
LOGP(DNM, LOGL_ERROR, "Rx MO=%s Fault report: invalid message code!\n",
om2k_mo_name(mo));
return;
}
/* Chop off mo-interface */
src += 4;
src_len -= 4;
/* Iterate over each TLV element */
while (1) {
/* Bail if an the maximum number of TLV fields
* have been parsed */
if (tlv_count >= 11) {
LOGP(DNM, LOGL_ERROR,
"Rx MO=%s Fault Report: too many tlv elements!\n",
om2k_mo_name(mo));
return;
}
/* Parse TLV field */
rc = tlv_parse_one(&tag, &tag_len, &val, &om2k_att_tlvdef,
src + src_pos, src_len - src_pos);
if (rc > 0)
src_pos += rc;
else {
LOGP(DNM, LOGL_ERROR,
"Rx MO=%s Fault Report: invalid tlv element!\n",
om2k_mo_name(mo));
return;
}
switch (tag) {
case OM2K_DEI_INT_FAULT_MAP_1A:
case OM2K_DEI_INT_FAULT_MAP_1B:
case OM2K_DEI_INT_FAULT_MAP_2A:
case OM2K_DEI_EXT_COND_MAP_1:
case OM2K_DEI_EXT_COND_MAP_2:
case OM2K_DEI_REPL_UNIT_MAP:
case OM2K_DEI_INT_FAULT_MAP_2A_EXT:
case OM2K_DEI_EXT_COND_MAP_2_EXT:
case OM2K_DEI_REPL_UNIT_MAP_EXT:
faults_present |= display_fault_bits(val, tag_len,
tag, mo);
break;
}
/* Stop when no further TLV elements can be expected */
if (src_len - src_pos < 2)
break;
tlv_count++;
}
if (!faults_present) {
DEBUGP(DNM, "Rx MO=%s Fault Report: All faults ceased!\n",
om2k_mo_name(mo));
}
}
int abis_om2k_rcvmsg(struct msgb *msg)
{
struct e1inp_sign_link *sign_link = (struct e1inp_sign_link *)msg->dst;
@ -2414,6 +2541,7 @@ int abis_om2k_rcvmsg(struct msgb *msg)
rc = abis_om2k_cal_time_resp(bts);
break;
case OM2K_MSGT_FAULT_REP:
display_fault_maps(msg->l2h, msgb_l2len(msg), &o2h->mo);
rc = abis_om2k_tx_simple(bts, &o2h->mo, OM2K_MSGT_FAULT_REP_ACK);
break;
case OM2K_MSGT_NEGOT_REQ: