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fixeria gerrit-no-reply at lists.osmocom.orgfixeria has submitted this change. ( https://gerrit.osmocom.org/c/osmo-bts/+/23773 )
Change subject: osmo-bts-trx: refactor 'maxdly' / 'maxdlynb' commands
......................................................................
osmo-bts-trx: refactor 'maxdly' / 'maxdlynb' commands
* Move way too verbose command description to the manuals.
* None of these commands apply immediately, correct the attributes.
** Remove meaningless call to l1if_provision_transceiver_trx().
* Make 'maxdlynb' hidden, so it only appears in the expert mode.
* One GMSK symbol actually corresponds to 550m.
Change-Id: I46839cf56bba2dcdc70303cd393e86d35aa2f3f5
---
M doc/manuals/vty/bts_vty_additions.xml
M src/osmo-bts-trx/trx_vty.c
2 files changed, 39 insertions(+), 29 deletions(-)
Approvals:
laforge: Looks good to me, approved
pespin: Looks good to me, but someone else must approve
Jenkins Builder: Verified
diff --git a/doc/manuals/vty/bts_vty_additions.xml b/doc/manuals/vty/bts_vty_additions.xml
index 519c4b4..2d22b41 100644
--- a/doc/manuals/vty/bts_vty_additions.xml
+++ b/doc/manuals/vty/bts_vty_additions.xml
@@ -1 +1,26 @@
-<vtydoc xmlns='urn:osmocom:xml:libosmocore:vty:doc:1.0'/>
+<!-- ex:ts=2:sw=2:et -->
+<vtydoc xmlns='urn:osmocom:xml:libosmocore:vty:doc:1.0'>
+ <node id='phy-inst'>
+ <!-- FIXME: This command appears twice for some reason. -->
+ <command id='osmotrx maxdly <0-63>'>
+ <description>
+ Access Burst is the first burst a mobile transmits in order to establish a connection and it
+ is used to estimate Timing Advance (TA) which is then applied to Normal Bursts to compensate
+ for signal delay due to distance. So changing this setting effectively changes maximum range
+ of the cell, because Access Bursts with a delay higher than this value will be ignored.
+ </description>
+ </command>
+ <!-- FIXME: This command appears unconditionally, despite being hidden. -->
+ <command id='osmotrx maxdlynb <0-63>'>
+ <description>
+ USE FOR TESTING ONLY, DO NOT CHANGE IN PRODUCTION USE!
+ During the normal operation, delay of Normal Bursts is controlled by the Timing Advance loop
+ and thus Normal Bursts arrive to a BTS with no more than a couple GSM symbols, which is
+ already taken into account in osmo-trx. Changing this setting will have no effect in
+ production installations except increasing osmo-trx CPU load. This setting is only useful
+ when testing with a transmitter which cannot precisely synchronize to the BTS downlink
+ signal, like R&S CMD57.
+ </description>
+ </command>
+ </node>
+</vtydoc>
diff --git a/src/osmo-bts-trx/trx_vty.c b/src/osmo-bts-trx/trx_vty.c
index a24adf7..2b8bc24 100644
--- a/src/osmo-bts-trx/trx_vty.c
+++ b/src/osmo-bts-trx/trx_vty.c
@@ -265,18 +265,12 @@
return CMD_SUCCESS;
}
-DEFUN_ATTR(cfg_phyinst_maxdly, cfg_phyinst_maxdly_cmd,
- "osmotrx maxdly <0-63>",
- OSMOTRX_STR
- "Set the maximum acceptable delay of an Access Burst (in GSM symbols)."
- " Access Burst is the first burst a mobile transmits in order to establish"
- " a connection and it is used to estimate Timing Advance (TA) which is"
- " then applied to Normal Bursts to compensate for signal delay due to"
- " distance. So changing this setting effectively changes maximum range of"
- " the cell, because if we receive an Access Burst with a delay higher than"
- " this value, it will be ignored and connection is dropped.\n"
- "GSM symbols (550m distance between UE and BTS per symbol)\n",
- CMD_ATTR_IMMEDIATE)
+DEFUN_USRATTR(cfg_phyinst_maxdly, cfg_phyinst_maxdly_cmd,
+ X(BTS_VTY_TRX_POWERCYCLE),
+ "osmotrx maxdly <0-63>",
+ OSMOTRX_STR
+ "Set the maximum acceptable delay of an Access Burst\n"
+ "Delay in GSMK symbol periods (approx. 550m per symbol)\n")
{
struct phy_instance *pinst = vty->index;
struct trx_l1h *l1h = pinst->u.osmotrx.hdl;
@@ -284,25 +278,17 @@
l1h->config.maxdly = atoi(argv[0]);
l1h->config.maxdly_valid = 1;
l1h->config.maxdly_sent = false;
- l1if_provision_transceiver_trx(l1h);
return CMD_SUCCESS;
}
-DEFUN_ATTR(cfg_phyinst_maxdlynb, cfg_phyinst_maxdlynb_cmd,
- "osmotrx maxdlynb <0-31>",
- OSMOTRX_STR
- "Set the maximum acceptable delay of a Normal Burst (in GSM symbols)."
- " USE FOR TESTING ONLY, DON'T CHANGE IN PRODUCTION USE!"
- " During normal operation, Normal Bursts delay are controlled by a Timing"
- " Advance control loop and thus Normal Bursts arrive to a BTS with no more"
- " than a couple GSM symbols, which is already taken into account in osmo-trx."
- " So changing this setting will have no effect in production installations"
- " except increasing osmo-trx CPU load. This setting is only useful when"
- " testing with a transmitter which can't precisely synchronize to the BTS"
- " downlink signal, like e.g. R&S CMD57.\n"
- "GSM symbols (approx. 1.1km per symbol)\n",
- CMD_ATTR_IMMEDIATE)
+DEFUN_ATTR_USRATTR(cfg_phyinst_maxdlynb, cfg_phyinst_maxdlynb_cmd,
+ CMD_ATTR_HIDDEN, /* expert mode command */
+ X(BTS_VTY_TRX_POWERCYCLE),
+ "osmotrx maxdlynb <0-63>",
+ OSMOTRX_STR
+ "Set the maximum acceptable delay of a Normal Burst\n"
+ "Delay in GMSK symbol periods (approx. 550m per symbol)\n")
{
struct phy_instance *pinst = vty->index;
struct trx_l1h *l1h = pinst->u.osmotrx.hdl;
@@ -310,7 +296,6 @@
l1h->config.maxdlynb = atoi(argv[0]);
l1h->config.maxdlynb_valid = 1;
l1h->config.maxdlynb_sent = false;
- l1if_provision_transceiver_trx(l1h);
return CMD_SUCCESS;
}
--
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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I46839cf56bba2dcdc70303cd393e86d35aa2f3f5
Gerrit-Change-Number: 23773
Gerrit-PatchSet: 5
Gerrit-Owner: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-MessageType: merged
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