aboutsummaryrefslogtreecommitdiffstats
path: root/src/gsm/lapdm.c
diff options
context:
space:
mode:
authorHarald Welte <laforge@osmocom.org>2020-05-02 19:56:36 +0200
committerHarald Welte <laforge@osmocom.org>2020-06-08 21:16:54 +0200
commit00b2faf8217338d4d7d1f4d27331af3151447350 (patch)
treea38d9b1af7eae5d46658e6b5c49c5910a9e07384 /src/gsm/lapdm.c
parent68944967b09ba28b795b0cc37e96ea525cc85257 (diff)
lapd/lapdm: print user-defined string name instead of (dl=%p)
At the moment we print the pointer address to identify the log lines belonging to a specific connection. Since pointer addresses are difficult to work with, a human readable ID should be printed instead. e.g. "This is LAPD instance for SAPI3 on bts0/trx1/ts5/lchan3" Change-Id: Ie6742843fff809edffcac24c4dce4edf66bc71be Closes: OS#1938
Diffstat (limited to 'src/gsm/lapdm.c')
-rw-r--r--src/gsm/lapdm.c113
1 files changed, 78 insertions, 35 deletions
diff --git a/src/gsm/lapdm.c b/src/gsm/lapdm.c
index 80840293..e5fbaf0d 100644
--- a/src/gsm/lapdm.c
+++ b/src/gsm/lapdm.c
@@ -126,17 +126,20 @@ const struct value_string osmo_ph_prim_names[] = {
{ 0, NULL }
};
+extern void *tall_lapd_ctx;
+
static int lapdm_send_ph_data_req(struct lapd_msg_ctx *lctx, struct msgb *msg);
static int send_rslms_dlsap(struct osmo_dlsap_prim *dp,
struct lapd_msg_ctx *lctx);
static int update_pending_frames(struct lapd_msg_ctx *lctx);
static void lapdm_dl_init(struct lapdm_datalink *dl,
- struct lapdm_entity *entity, int t200_ms, uint32_t n200)
+ struct lapdm_entity *entity, int t200_ms, uint32_t n200,
+ const char *name)
{
memset(dl, 0, sizeof(*dl));
dl->entity = entity;
- lapd_dl_init(&dl->dl, 1, 8, 251); /* Section 5.8.5 of TS 04.06 */
+ lapd_dl_init2(&dl->dl, 1, 8, 251, name); /* Section 5.8.5 of TS 04.06 */
dl->dl.reestablish = 0; /* GSM uses no reestablish */
dl->dl.send_ph_data_req = lapdm_send_ph_data_req;
dl->dl.send_dlsap = send_rslms_dlsap;
@@ -165,7 +168,7 @@ void lapdm_entity_init(struct lapdm_entity *le, enum lapdm_mode mode, int t200)
for (i = 0; i < ARRAY_SIZE(t200_ms_sapi_arr); i++)
t200_ms_sapi_arr[i] = t200 * 1000;
- return lapdm_entity_init2(le, mode, t200_ms_sapi_arr, N200);
+ return lapdm_entity_init3(le, mode, t200_ms_sapi_arr, N200, NULL);
}
/*! initialize a LAPDm entity and all datalinks inside
@@ -177,10 +180,29 @@ void lapdm_entity_init(struct lapdm_entity *le, enum lapdm_mode mode, int t200)
void lapdm_entity_init2(struct lapdm_entity *le, enum lapdm_mode mode,
const int *t200_ms, int n200)
{
+ lapdm_entity_init3(le, mode, t200_ms, n200, NULL);
+}
+
+/*! initialize a LAPDm entity and all datalinks inside
+ * \param[in] le LAPDm entity
+ * \param[in] mode lapdm_mode (BTS/MS)
+ * \param[in] t200_ms per-SAPI array of T200 re-transmission timer in milli-seconds
+ * \param[in] n200 N200 re-transmisison count
+ * \param[in] name human-readable name (will be copied internally + extended with SAPI)
+ */
+void lapdm_entity_init3(struct lapdm_entity *le, enum lapdm_mode mode,
+ const int *t200_ms, int n200, const char *name_pfx)
+{
unsigned int i;
- for (i = 0; i < ARRAY_SIZE(le->datalink); i++)
- lapdm_dl_init(&le->datalink[i], le, t200_ms[i], n200);
+ for (i = 0; i < ARRAY_SIZE(le->datalink); i++) {
+ char name[256];
+ if (name_pfx) {
+ snprintf(name, sizeof(name), "%s[%s]", name_pfx, i == 0 ? "0" : "3");
+ lapdm_dl_init(&le->datalink[i], le, t200_ms[i], n200, name);
+ } else
+ lapdm_dl_init(&le->datalink[i], le, t200_ms[i], n200, NULL);
+ }
lapdm_entity_set_mode(le, mode);
}
@@ -213,7 +235,7 @@ void lapdm_channel_init(struct lapdm_channel *lc, enum lapdm_mode mode)
const int t200_ms_dcch[_NR_DL_SAPI] = { 1000, 1000 };
const int t200_ms_acch[_NR_DL_SAPI] = { 2000, 2000 };
- lapdm_channel_init2(lc, mode, t200_ms_dcch, t200_ms_acch, GSM_LCHAN_SDCCH);
+ lapdm_channel_init3(lc, mode, t200_ms_dcch, t200_ms_acch, GSM_LCHAN_SDCCH, NULL);
}
/*! initialize a LAPDm channel and all its channels
@@ -226,14 +248,42 @@ void lapdm_channel_init(struct lapdm_channel *lc, enum lapdm_mode mode)
int lapdm_channel_init2(struct lapdm_channel *lc, enum lapdm_mode mode,
const int *t200_ms_dcch, const int *t200_ms_acch, enum gsm_chan_t chan_t)
{
+ return lapdm_channel_init3(lc, mode, t200_ms_dcch, t200_ms_acch, chan_t, NULL);
+}
+
+/*! initialize a LAPDm channel and all its channels
+ * \param[in] lc \ref lapdm_channel to be initialized
+ * \param[in] mode \ref lapdm_mode (BTS/MS)
+ * \param[in] t200_ms_dcch per-SAPI array of T200 in milli-seconds for DCCH
+ * \param[in] t200_ms_acch per-SAPI array of T200 in milli-seconds for SACCH
+ * \param[in] chan_t GSM channel type (to correctly set N200)
+ * \parma[in] name_pfx human-readable name (copied by function + extended with ACCH/DCCH)
+ */
+int lapdm_channel_init3(struct lapdm_channel *lc, enum lapdm_mode mode,
+ const int *t200_ms_dcch, const int *t200_ms_acch, enum gsm_chan_t chan_t,
+ const char *name_pfx)
+{
int n200_dcch = get_n200_dcch(chan_t);
+ char namebuf[256];
+ char *name = NULL;
+
if (n200_dcch < 0)
return -EINVAL;
- lapdm_entity_init2(&lc->lapdm_acch, mode, t200_ms_acch, N200_TR_SACCH);
+ osmo_talloc_replace_string(tall_lapd_ctx, &lc->name, name_pfx);
+
+ if (name_pfx) {
+ snprintf(namebuf, sizeof(namebuf), "%s[ACCH]", name_pfx);
+ name = namebuf;
+ }
+ lapdm_entity_init3(&lc->lapdm_acch, mode, t200_ms_acch, N200_TR_SACCH, name);
lc->lapdm_acch.lapdm_ch = lc;
- lapdm_entity_init2(&lc->lapdm_dcch, mode, t200_ms_dcch, n200_dcch);
+ if (name_pfx) {
+ snprintf(namebuf, sizeof(namebuf), "%s[DCCH]", name_pfx);
+ name = namebuf;
+ }
+ lapdm_entity_init3(&lc->lapdm_dcch, mode, t200_ms_dcch, n200_dcch, name);
lc->lapdm_dcch.lapdm_ch = lc;
return 0;
@@ -478,7 +528,7 @@ static int rsl_rll_error(uint8_t cause, struct lapdm_msg_ctx *mctx)
{
struct msgb *msg;
- LOGP(DLLAPD, LOGL_NOTICE, "sending MDL-ERROR-IND %d\n", cause);
+ LOGDL(&mctx->dl->dl, LOGL_NOTICE, "sending MDL-ERROR-IND %d\n", cause);
msg = rsl_rll_simple(RSL_MT_ERROR_IND, mctx->chan_nr, mctx->link_id, 0);
msgb_tlv_put(msg, RSL_IE_RLM_CAUSE, 1, &cause);
return rslms_sendmsg(msg, mctx->dl->entity);
@@ -523,7 +573,7 @@ static int send_rslms_dlsap(struct osmo_dlsap_prim *dp,
}
if (!rll_msg) {
- LOGP(DLLAPD, LOGL_ERROR, "Unsupported op %d, prim %d. Please "
+ LOGDL(dl, LOGL_ERROR, "Unsupported op %d, prim %d. Please "
"fix!\n", dp->oph.primitive, dp->oph.operation);
return -EINVAL;
}
@@ -592,7 +642,7 @@ static int update_pending_frames(struct lapd_msg_ctx *lctx)
LAPDm_CTRL_PF_BIT(msg->l2h[1]));
rc = 0;
} else if (LAPDm_CTRL_is_S(msg->l2h[1])) {
- LOGP(DLLAPD, LOGL_ERROR, "Supervisory frame in queue, this shouldn't happen\n");
+ LOGDL(dl, LOGL_ERROR, "Supervisory frame in queue, this shouldn't happen\n");
}
}
@@ -690,8 +740,7 @@ static int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le,
mctx.dl = lapdm_datalink_for_sapi(le, sapi);
/* G.2.1 No action on frames containing an unallocated SAPI. */
if (!mctx.dl) {
- LOGP(DLLAPD, LOGL_NOTICE, "Received frame for unsupported "
- "SAPI %d!\n", sapi);
+ LOGP(DLLAPD, LOGL_NOTICE, "Received frame for unsupported SAPI %d!\n", sapi);
msgb_free(msg);
return -EIO;
}
@@ -705,8 +754,7 @@ static int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le,
mctx.link_id |= LAPDm_ADDR_SAPI(msg->l2h[0]);
/* G.2.3 EA bit set to "0" is not allowed in GSM */
if (!LAPDm_ADDR_EA(msg->l2h[0])) {
- LOGP(DLLAPD, LOGL_NOTICE, "EA bit 0 is not allowed in "
- "GSM\n");
+ LOGDL(lctx.dl, LOGL_NOTICE, "EA bit 0 is not allowed in GSM\n");
msgb_free(msg);
rsl_rll_error(RLL_CAUSE_FRM_UNIMPL, &mctx);
return -EINVAL;
@@ -737,8 +785,7 @@ static int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le,
/* 5.3.3 UI frames with invalid SAPI values shall be
* discarded
*/
- LOGP(DLLAPD, LOGL_INFO, "sapi=%u (discarding)\n",
- lctx.sapi);
+ LOGDL(lctx.dl, LOGL_INFO, "sapi=%u (discarding)\n", lctx.sapi);
msgb_free(msg);
return 0;
}
@@ -755,8 +802,7 @@ static int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le,
* MDL-ERROR-INDICATION primitive with cause
* "frame not implemented" is sent to the
* mobile management entity. */
- LOGP(DLLAPD, LOGL_NOTICE, "we don't support "
- "multi-octet length\n");
+ LOGDL(lctx.dl, LOGL_NOTICE, "we don't support multi-octet length\n");
msgb_free(msg);
rsl_rll_error(RLL_CAUSE_FRM_UNIMPL, &mctx);
return -EINVAL;
@@ -771,7 +817,7 @@ static int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le,
memcpy(&mctx.dl->mctx, &mctx, sizeof(mctx.dl->mctx));
rc =lapdm_rx_not_permitted(le, &lctx);
if (rc > 0) {
- LOGP(DLLAPD, LOGL_NOTICE, "received message not permitted\n");
+ LOGDL(lctx.dl, LOGL_NOTICE, "received message not permitted\n");
msgb_free(msg);
rsl_rll_error(rc, &mctx);
return -EINVAL;
@@ -930,7 +976,7 @@ static int rslms_rx_rll_est_req(struct msgb *msg, struct lapdm_datalink *dl)
if (sapi != 0) {
/* According to clause 6, the contention resolution
* procedure is only permitted with SAPI value 0 */
- LOGP(DLLAPD, LOGL_ERROR, "SAPI != 0 but contention"
+ LOGDL(&dl->dl, LOGL_ERROR, "SAPI != 0 but contention"
"resolution (discarding)\n");
msgb_free(msg);
return send_rll_simple(RSL_MT_REL_IND, &dl->mctx);
@@ -946,7 +992,7 @@ static int rslms_rx_rll_est_req(struct msgb *msg, struct lapdm_datalink *dl)
/* check if the layer3 message length exceeds N201 */
if (length > n201) {
- LOGP(DLLAPD, LOGL_ERROR, "frame too large: %d > N201(%d) "
+ LOGDL(&dl->dl, LOGL_ERROR, "frame too large: %d > N201(%d) "
"(discarding)\n", length, n201);
msgb_free(msg);
return send_rll_simple(RSL_MT_REL_IND, &dl->mctx);
@@ -975,7 +1021,7 @@ static int rslms_rx_rll_udata_req(struct msgb *msg, struct lapdm_datalink *dl)
int length, ui_bts;
if (!le) {
- LOGP(DLLAPD, LOGL_ERROR, "lapdm_datalink without entity error\n");
+ LOGDL(&dl->dl, LOGL_ERROR, "lapdm_datalink without entity error\n");
msgb_free(msg);
return -EMLINK;
}
@@ -992,8 +1038,7 @@ static int rslms_rx_rll_udata_req(struct msgb *msg, struct lapdm_datalink *dl)
le->tx_power = *TLVP_VAL(&tv, RSL_IE_MS_POWER);
}
if (!TLVP_PRESENT(&tv, RSL_IE_L3_INFO)) {
- LOGP(DLLAPD, LOGL_ERROR, "unit data request without message "
- "error\n");
+ LOGDL(&dl->dl, LOGL_ERROR, "unit data request without message error\n");
msgb_free(msg);
return -EINVAL;
}
@@ -1001,15 +1046,14 @@ static int rslms_rx_rll_udata_req(struct msgb *msg, struct lapdm_datalink *dl)
length = TLVP_LEN(&tv, RSL_IE_L3_INFO);
/* check if the layer3 message length exceeds N201 */
if (length + ((link_id & 0x40) ? 4 : 2) + !ui_bts > 23) {
- LOGP(DLLAPD, LOGL_ERROR, "frame too large: %d > N201(%d) "
+ LOGDL(&dl->dl, LOGL_ERROR, "frame too large: %d > N201(%d) "
"(discarding)\n", length,
((link_id & 0x40) ? 18 : 20) + ui_bts);
msgb_free(msg);
return -EIO;
}
- LOGP(DLLAPD, LOGL_INFO, "sending unit data (tx_power=%d, ta=%d)\n",
- le->tx_power, le->ta);
+ LOGDL(&dl->dl, LOGL_INFO, "sending unit data (tx_power=%d, ta=%d)\n", le->tx_power, le->ta);
/* Remove RLL header from msgb and set length to L3-info */
msgb_pull_to_l3(msg);
@@ -1041,8 +1085,7 @@ static int rslms_rx_rll_data_req(struct msgb *msg, struct lapdm_datalink *dl)
rsl_tlv_parse(&tv, rllh->data, msgb_l2len(msg)-sizeof(*rllh));
if (!TLVP_PRESENT(&tv, RSL_IE_L3_INFO)) {
- LOGP(DLLAPD, LOGL_ERROR, "data request without message "
- "error\n");
+ LOGDL(&dl->dl, LOGL_ERROR, "data request without message error\n");
msgb_free(msg);
return -EINVAL;
}
@@ -1068,7 +1111,7 @@ static int rslms_rx_rll_susp_req(struct msgb *msg, struct lapdm_datalink *dl)
struct osmo_dlsap_prim dp;
if (sapi != 0) {
- LOGP(DLLAPD, LOGL_ERROR, "SAPI != 0 while suspending\n");
+ LOGDL(&dl->dl, LOGL_ERROR, "SAPI != 0 while suspending\n");
msgb_free(msg);
return -EINVAL;
}
@@ -1098,7 +1141,7 @@ static int rslms_rx_rll_res_req(struct msgb *msg, struct lapdm_datalink *dl)
rsl_tlv_parse(&tv, rllh->data, msgb_l2len(msg)-sizeof(*rllh));
if (!TLVP_PRESENT(&tv, RSL_IE_L3_INFO)) {
- LOGP(DLLAPD, LOGL_ERROR, "resume without message error\n");
+ LOGDL(&dl->dl, LOGL_ERROR, "resume without message error\n");
msgb_free(msg);
return send_rll_simple(RSL_MT_REL_IND, &dl->mctx);
}
@@ -1235,7 +1278,7 @@ static int rslms_rx_rll(struct msgb *msg, struct lapdm_channel *lc)
case RSL_MT_SUSP_REQ:
case RSL_MT_RES_REQ:
case RSL_MT_RECON_REQ:
- LOGP(DLLAPD, LOGL_NOTICE, "(%p) RLL Message '%s' unsupported in BTS side LAPDm\n",
+ LOGP(DLLAPD, LOGL_NOTICE, "(%s) RLL Message '%s' unsupported in BTS side LAPDm\n",
lc->name, rsl_msg_name(msg_type));
msgb_free(msg);
return -EINVAL;
@@ -1262,14 +1305,14 @@ static int rslms_rx_rll(struct msgb *msg, struct lapdm_channel *lc)
/* This is triggered in abnormal error conditions where
* set_lapdm_context() was not called for the channel earlier. */
if (!dl->dl.lctx.dl) {
- LOGP(DLLAPD, LOGL_NOTICE, "(%p) RLL Message '%s' received without LAPDm context. (sapi %d)\n",
+ LOGP(DLLAPD, LOGL_NOTICE, "(%s) RLL Message '%s' received without LAPDm context. (sapi %d)\n",
lc->name, rsl_msg_name(msg_type), sapi);
msgb_free(msg);
return -EINVAL;
}
break;
default:
- LOGP(DLLAPD, LOGL_INFO, "(%p) RLL Message '%s' received. (sapi %d)\n",
+ LOGP(DLLAPD, LOGL_INFO, "(%s) RLL Message '%s' received. (sapi %d)\n",
lc->name, rsl_msg_name(msg_type), sapi);
}