neels has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmo-sccp/+/32677 ) Change subject: add osmo_sccp_set_max_optional_data() ...................................................................... add osmo_sccp_set_max_optional_data() So far, the optional data limit can only be modified via cs7 VTY, because struct osmo_sccp_instance is private. Provide public API to set this limit from C. Change-Id: If3d22a0f65a7ed0be043027652402b32c356e322 --- M include/osmocom/sigtran/osmo_ss7.h M src/sccp_user.c M src/sccp_vty.c 3 files changed, 35 insertions(+), 2 deletions(-) git pull ssh://gerrit.osmocom.org:29418/libosmo-sccp refs/changes/77/32677/1 diff --git a/include/osmocom/sigtran/osmo_ss7.h b/include/osmocom/sigtran/osmo_ss7.h index cd1779c..e025709 100644 --- a/include/osmocom/sigtran/osmo_ss7.h +++ b/include/osmocom/sigtran/osmo_ss7.h @@ -565,6 +565,8 @@ int local_port, int remote_port, const char *remote_ip); +void osmo_sccp_set_max_optional_data(struct osmo_sccp_instance *inst, int val); + enum osmo_ss7_as_traffic_mode osmo_ss7_tmode_from_xua(uint32_t in); int osmo_ss7_tmode_to_xua(enum osmo_ss7_as_traffic_mode tmod); diff --git a/src/sccp_user.c b/src/sccp_user.c index 34c663d..a04a1c3 100644 --- a/src/sccp_user.c +++ b/src/sccp_user.c @@ -827,6 +827,24 @@ return NULL; } +/*! Adjust the upper bound for the optional data length (the payload) for CR, CC, CREF and RLSD messages. + * For any Optional Data part larger than this value in octets, send CR, CC, CREF and RLSD messages without any payload, + * and send the data payload in a separate Data Form 1 message. ITU-T Q.713 sections 4.2 thru 4.5 define a limit of 130 + * bytes for the 'Data' parameter. This limit can be adjusted here. May be useful for interop with nonstandard SCCP + * peers. + * \param[in] sccp SCCP instance to reconfigure. + * \param[in] val Number of bytes to set as upper bound for the optional data length, or pass a negative value to set + * the standard value of SCCP_MAX_OPTIONAL_DATA == 130, which conforms to ITU-T Q.713. + */ +void osmo_sccp_set_max_optional_data(struct osmo_sccp_instance *inst, int val) +{ + if (!inst) + return; + if (val < 0) + val = SCCP_MAX_OPTIONAL_DATA; + inst->max_optional_data = val; +} + /*! \brief get the SS7 instance that is related to the given SCCP instance * \param[in] sccp SCCP instance * \returns SS7 instance; NULL if sccp was NULL */ diff --git a/src/sccp_vty.c b/src/sccp_vty.c index 90fb914..dda3ff0 100644 --- a/src/sccp_vty.c +++ b/src/sccp_vty.c @@ -183,7 +183,7 @@ int val; if (!strcmp(argv[0], "standard")) - val = SCCP_MAX_OPTIONAL_DATA; + val = -1; else val = atoi(argv[0]); @@ -193,7 +193,7 @@ return CMD_WARNING; } - ss7->sccp->max_optional_data = val; + osmo_sccp_set_max_optional_data(ss7->sccp, val); return CMD_SUCCESS; } -- To view, visit https://gerrit.osmocom.org/c/libosmo-sccp/+/32677 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmo-sccp Gerrit-Branch: master Gerrit-Change-Id: If3d22a0f65a7ed0be043027652402b32c356e322 Gerrit-Change-Number: 32677 Gerrit-PatchSet: 1 Gerrit-Owner: neels &lt;nhofmeyr(a)sysmocom.de&gt; Gerrit-MessageType: newchange