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-rw-r--r--src/bts.cpp19
-rw-r--r--src/bts.h2
-rw-r--r--src/gprs_rlcmac.h2
-rw-r--r--src/gprs_rlcmac_data.cpp131
-rw-r--r--src/poll_controller.cpp4
-rw-r--r--src/tbf.cpp104
-rw-r--r--src/tbf.h5
7 files changed, 133 insertions, 134 deletions
diff --git a/src/bts.cpp b/src/bts.cpp
index 0e45188..8bb0f26 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -24,6 +24,7 @@
#include <encoding.h>
#include <decoding.h>
#include <rlc.h>
+#include <pcu_l1_if.h>
#include <gprs_rlcmac.h>
#include <gprs_debug.h>
@@ -330,6 +331,24 @@ int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn)
return 0;
}
+void BTS::snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi)
+{
+ int plen;
+
+ debug_diagram(this, tbf->diag, "IMM.ASS (PCH)");
+ LOGP(DRLCMAC, LOGL_INFO, "TX: START TFI: %u TLLI: 0x%08x Immediate Assignment Downlink (PCH)\n", tbf->tfi, tbf->tlli);
+ bitvec *immediate_assignment = bitvec_alloc(22); /* without plen */
+ bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
+ /* use request reference that has maximum distance to current time,
+ * so the assignment will not conflict with possible RACH requests. */
+ plen = Encoding::write_immediate_assignment(&m_bts, immediate_assignment, 1, 125,
+ (tbf->pdch[tbf->first_ts]->last_rts_fn + 21216) % 2715648, tbf->ta,
+ tbf->arfcn, tbf->first_ts, tbf->tsc, tbf->tfi, 0, tbf->tlli, poll,
+ tbf->poll_fn, 0, m_bts.alpha, m_bts.gamma, -1);
+ pcu_l1if_tx_pch(immediate_assignment, plen, imsi);
+ bitvec_free(immediate_assignment);
+}
+
/*
* PDCH code below. TODO: move to a separate file
diff --git a/src/bts.h b/src/bts.h
index 25c6473..608f215 100644
--- a/src/bts.h
+++ b/src/bts.h
@@ -170,6 +170,8 @@ public:
int rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn);
+ void snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi);
+
private:
int m_cur_fn;
struct gprs_rlcmac_bts m_bts;
diff --git a/src/gprs_rlcmac.h b/src/gprs_rlcmac.h
index f5a0ee6..6184a51 100644
--- a/src/gprs_rlcmac.h
+++ b/src/gprs_rlcmac.h
@@ -94,8 +94,6 @@ enum gprs_rlcmac_block_type {
int gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf);
-int gprs_rlcmac_poll_timeout(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf);
-
int gprs_rlcmac_rcv_rach(struct gprs_rlcmac_bts *bts, uint8_t ra, uint32_t Fn, int16_t qta);
struct msgb *gprs_rlcmac_send_packet_uplink_assignment(
diff --git a/src/gprs_rlcmac_data.cpp b/src/gprs_rlcmac_data.cpp
index 00afa86..b016c76 100644
--- a/src/gprs_rlcmac_data.cpp
+++ b/src/gprs_rlcmac_data.cpp
@@ -46,114 +46,6 @@ extern void *tall_pcu_ctx;
#define POLLING_ASSIGNMENT_UL 1
-static void gprs_rlcmac_downlink_assignment(
- gprs_rlcmac_tbf *tbf, uint8_t poll,
- const char *imsi);
-
-int gprs_rlcmac_poll_timeout(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf)
-{
- LOGP(DRLCMAC, LOGL_NOTICE, "Poll timeout for %s TBF=%d\n",
- (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi);
-
- tbf->poll_state = GPRS_RLCMAC_POLL_NONE;
-
- if (tbf->ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) {
- if (!(tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
- "PACKET CONTROL ACK for PACKET UPLINK ACK\n");
- tbf->rlcmac_diag();
- tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK);
- }
- tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE;
- debug_diagram(bts->bts, tbf->diag, "timeout UL-ACK");
- if (tbf->state_is(GPRS_RLCMAC_FINISHED)) {
- tbf->dir.ul.n3103++;
- if (tbf->dir.ul.n3103 == bts->n3103) {
- LOGP(DRLCMAC, LOGL_NOTICE,
- "- N3103 exceeded\n");
- debug_diagram(bts->bts, tbf->diag, "N3103 exceeded");
- tbf_new_state(tbf, GPRS_RLCMAC_RELEASING);
- tbf_timer_start(tbf, 3169, bts->t3169, 0);
- return 0;
- }
- /* reschedule UL ack */
- tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_SEND_ACK;
- }
- } else
- if (tbf->ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) {
- if (!(tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
- "PACKET CONTROL ACK for PACKET UPLINK "
- "ASSIGNMENT.\n");
- tbf->rlcmac_diag();
- tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS);
- }
- tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE;
- debug_diagram(tbf->bts, tbf->diag, "timeout UL-ASS");
- tbf->n3105++;
- if (tbf->n3105 == bts->n3105) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n");
- debug_diagram(bts->bts, tbf->diag, "N3105 exceeded");
- tbf_new_state(tbf, GPRS_RLCMAC_RELEASING);
- tbf_timer_start(tbf, 3195, bts->t3195, 0);
- return 0;
- }
- /* reschedule UL assignment */
- tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS;
- } else
- if (tbf->dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) {
- if (!(tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
- "PACKET CONTROL ACK for PACKET DOWNLINK "
- "ASSIGNMENT.\n");
- tbf->rlcmac_diag();
- tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS);
- }
- tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE;
- debug_diagram(bts->bts, tbf->diag, "timeout DL-ASS");
- tbf->n3105++;
- if (tbf->n3105 == bts->n3105) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n");
- debug_diagram(bts->bts, tbf->diag, "N3105 exceeded");
- tbf_new_state(tbf, GPRS_RLCMAC_RELEASING);
- tbf_timer_start(tbf, 3195, bts->t3195, 0);
- return 0;
- }
- /* reschedule DL assignment */
- tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS;
- } else
- if (tbf->direction == GPRS_RLCMAC_DL_TBF) {
- if (!(tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
- "PACKET DOWNLINK ACK.\n");
- tbf->rlcmac_diag();
- tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK);
- }
- debug_diagram(bts->bts, tbf->diag, "timeout DL-ACK");
- tbf->n3105++;
- if (tbf->n3105 == bts->n3105) {
- LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n");
- debug_diagram(bts->bts, tbf->diag, "N3105 exceeded");
- tbf_new_state(tbf, GPRS_RLCMAC_RELEASING);
- tbf_timer_start(tbf, 3195, bts->t3195, 0);
- return 0;
- }
- /* resend IMM.ASS on CCCH on timeout */
- if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))
- && !(tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) {
- LOGP(DRLCMAC, LOGL_DEBUG, "Re-send dowlink assignment "
- "for TBF=%d on PCH (IMSI=%s)\n", tbf->tfi,
- tbf->dir.dl.imsi);
- /* send immediate assignment */
- gprs_rlcmac_downlink_assignment(tbf, 0, tbf->dir.dl.imsi);
- tbf->dir.dl.wait_confirm = 1;
- }
- } else
- LOGP(DRLCMAC, LOGL_ERROR, "- Poll Timeout, but no event!\n");
-
- return 0;
-}
-
#ifdef DEBUG_DL_ASS_IDLE
char debug_imsi[16];
#endif
@@ -931,27 +823,6 @@ struct msgb *gprs_rlcmac_send_packet_downlink_assignment(
return msg;
}
-static void gprs_rlcmac_downlink_assignment(
- gprs_rlcmac_tbf *tbf, uint8_t poll,
- const char *imsi)
-{
- gprs_rlcmac_bts *bts = tbf->bts->bts_data();
- int plen;
-
- debug_diagram(bts->bts, tbf->diag, "IMM.ASS (PCH)");
- LOGP(DRLCMAC, LOGL_INFO, "TX: START TFI: %u TLLI: 0x%08x Immediate Assignment Downlink (PCH)\n", tbf->tfi, tbf->tlli);
- bitvec *immediate_assignment = bitvec_alloc(22); /* without plen */
- bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
- /* use request reference that has maximum distance to current time,
- * so the assignment will not conflict with possible RACH requests. */
- plen = Encoding::write_immediate_assignment(bts, immediate_assignment, 1, 125,
- (tbf->pdch[tbf->first_ts]->last_rts_fn + 21216) % 2715648, tbf->ta,
- tbf->arfcn, tbf->first_ts, tbf->tsc, tbf->tfi, 0, tbf->tlli, poll,
- tbf->poll_fn, 0, bts->alpha, bts->gamma, -1);
- pcu_l1if_tx_pch(immediate_assignment, plen, imsi);
- bitvec_free(immediate_assignment);
-}
-
/* depending on the current TBF, we assign on PACCH or AGCH */
void gprs_rlcmac_trigger_downlink_assignment(
struct gprs_rlcmac_tbf *tbf,
@@ -997,7 +868,7 @@ void gprs_rlcmac_trigger_downlink_assignment(
tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_CCCH);
strncpy(tbf->dir.dl.imsi, imsi, sizeof(tbf->dir.dl.imsi));
/* send immediate assignment */
- gprs_rlcmac_downlink_assignment(tbf, 0, imsi);
+ tbf->bts->snd_dl_ass(tbf, 0, imsi);
tbf->dir.dl.wait_confirm = 1;
}
}
diff --git a/src/poll_controller.cpp b/src/poll_controller.cpp
index 115a68f..0f46472 100644
--- a/src/poll_controller.cpp
+++ b/src/poll_controller.cpp
@@ -41,7 +41,7 @@ void PollController::expireTimedout(int frame_number)
elapsed = (frame_number + 2715648 - tbf->poll_fn)
% 2715648;
if (elapsed >= 20 && elapsed < 2715400)
- gprs_rlcmac_poll_timeout(bts, tbf);
+ tbf->poll_timeout();
}
}
llist_for_each_entry(tbf, &bts->dl_tbfs, list) {
@@ -49,7 +49,7 @@ void PollController::expireTimedout(int frame_number)
elapsed = (frame_number + 2715648 - tbf->poll_fn)
% 2715648;
if (elapsed >= 20 && elapsed < 2715400)
- gprs_rlcmac_poll_timeout(bts, tbf);
+ tbf->poll_timeout();
}
}
llist_for_each_entry_safe(sba, sba2, &m_bts.sba()->m_sbas, list) {
diff --git a/src/tbf.cpp b/src/tbf.cpp
index 4225b3b..0321c40 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -42,6 +42,11 @@ extern void *tall_pcu_ctx;
static void tbf_timer_cb(void *_tbf);
+inline gprs_rlcmac_bts *gprs_rlcmac_tbf::bts_data() const
+{
+ return bts->bts_data();
+}
+
static inline void tbf_update_ms_class(struct gprs_rlcmac_tbf *tbf,
const uint8_t ms_class)
{
@@ -407,6 +412,105 @@ void gprs_rlcmac_tbf::stop_timer()
}
}
+void gprs_rlcmac_tbf::poll_timeout()
+{
+ LOGP(DRLCMAC, LOGL_NOTICE, "Poll timeout for %s TBF=%d\n",
+ (direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tfi);
+
+ poll_state = GPRS_RLCMAC_POLL_NONE;
+
+ if (ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) {
+ if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK))) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
+ "PACKET CONTROL ACK for PACKET UPLINK ACK\n");
+ rlcmac_diag();
+ state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK);
+ }
+ ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE;
+ debug_diagram(bts, this->diag, "timeout UL-ACK");
+ if (state_is(GPRS_RLCMAC_FINISHED)) {
+ dir.ul.n3103++;
+ if (dir.ul.n3103 == bts->bts_data()->n3103) {
+ LOGP(DRLCMAC, LOGL_NOTICE,
+ "- N3103 exceeded\n");
+ debug_diagram(bts, diag, "N3103 exceeded");
+ tbf_new_state(this, GPRS_RLCMAC_RELEASING);
+ tbf_timer_start(this, 3169, bts->bts_data()->t3169, 0);
+ return;
+ }
+ /* reschedule UL ack */
+ ul_ack_state = GPRS_RLCMAC_UL_ACK_SEND_ACK;
+ }
+ } else if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) {
+ if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
+ "PACKET CONTROL ACK for PACKET UPLINK "
+ "ASSIGNMENT.\n");
+ rlcmac_diag();
+ state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS);
+ }
+ ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE;
+ debug_diagram(bts, diag, "timeout UL-ASS");
+ n3105++;
+ if (n3105 == bts_data()->n3105) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n");
+ debug_diagram(bts, diag, "N3105 exceeded");
+ tbf_new_state(this, GPRS_RLCMAC_RELEASING);
+ tbf_timer_start(this, 3195, bts_data()->t3195, 0);
+ return;
+ }
+ /* reschedule UL assignment */
+ ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS;
+ } else if (dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) {
+ if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
+ "PACKET CONTROL ACK for PACKET DOWNLINK "
+ "ASSIGNMENT.\n");
+ rlcmac_diag();
+ state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS);
+ }
+ dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE;
+ debug_diagram(bts, diag, "timeout DL-ASS");
+ n3105++;
+ if (n3105 == bts->bts_data()->n3105) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n");
+ debug_diagram(bts, diag, "N3105 exceeded");
+ tbf_new_state(this, GPRS_RLCMAC_RELEASING);
+ tbf_timer_start(this, 3195, bts_data()->t3195, 0);
+ return;
+ }
+ /* reschedule DL assignment */
+ dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS;
+ } else if (direction == GPRS_RLCMAC_DL_TBF) {
+ if (!(state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- Timeout for polling "
+ "PACKET DOWNLINK ACK.\n");
+ rlcmac_diag();
+ state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK);
+ }
+ debug_diagram(bts, diag, "timeout DL-ACK");
+ n3105++;
+ if (n3105 == bts->bts_data()->n3105) {
+ LOGP(DRLCMAC, LOGL_NOTICE, "- N3105 exceeded\n");
+ debug_diagram(bts, diag, "N3105 exceeded");
+ tbf_new_state(this, GPRS_RLCMAC_RELEASING);
+ tbf_timer_start(this, 3195, bts_data()->t3195, 0);
+ return;
+ }
+ /* resend IMM.ASS on CCCH on timeout */
+ if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))
+ && !(state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) {
+ LOGP(DRLCMAC, LOGL_DEBUG, "Re-send dowlink assignment "
+ "for TBF=%d on PCH (IMSI=%s)\n", tfi,
+ dir.dl.imsi);
+ /* send immediate assignment */
+ bts->snd_dl_ass(this, 0, dir.dl.imsi);
+ dir.dl.wait_confirm = 1;
+ }
+ } else
+ LOGP(DRLCMAC, LOGL_ERROR, "- Poll Timeout, but no event!\n");
+}
+
struct gprs_rlcmac_tbf *tbf_alloc(struct gprs_rlcmac_bts *bts,
struct gprs_rlcmac_tbf *old_tbf, enum gprs_rlcmac_tbf_direction dir,
uint8_t tfi, uint8_t trx,
diff --git a/src/tbf.h b/src/tbf.h
index 0f8e77d..4afc649 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -106,6 +106,8 @@ struct gprs_rlcmac_tbf {
void stop_timer();
void stop_t3191();
+ void poll_timeout();
+
struct llist_head list;
uint32_t state_flags;
enum gprs_rlcmac_tbf_direction direction;
@@ -207,6 +209,9 @@ struct gprs_rlcmac_tbf {
/* store the BTS this TBF belongs to */
BTS *bts;
+
+protected:
+ gprs_rlcmac_bts *bts_data() const;
};