neels has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-hnbgw/+/33132 )
Change subject: add hnbgw_decode_ranap_co() ......................................................................
add hnbgw_decode_ranap_co()
An upcoming patch will re-use this pattern of decoding RANAP and attaching a talloc destructor to the result for the third time. The caller will be in hnbgw_rua.c, so make this a "public" function.
Change-Id: I3695babfb083ed1f5fff700dcb7646fa95496a52 --- M include/osmocom/hnbgw/hnbgw_rua.h M src/osmo-hnbgw/context_map_rua.c 2 files changed, 40 insertions(+), 11 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-hnbgw refs/changes/32/33132/1
diff --git a/include/osmocom/hnbgw/hnbgw_rua.h b/include/osmocom/hnbgw/hnbgw_rua.h index 1526f11..0bf2de8 100644 --- a/include/osmocom/hnbgw/hnbgw_rua.h +++ b/include/osmocom/hnbgw/hnbgw_rua.h @@ -2,6 +2,7 @@
#include <osmocom/hnbgw/hnbgw.h> #include <osmocom/rua/RUA_Cause.h> +#include <osmocom/ranap/ranap_ies_defs.h>
int hnbgw_rua_rx(struct hnb_context *hnb, struct msgb *msg);
@@ -10,3 +11,5 @@ const uint8_t *data, unsigned int len); int rua_tx_disc(struct hnb_context *hnb, int is_ps, uint32_t context_id, const RUA_Cause_t *cause, const uint8_t *data, unsigned int len); + +ranap_message *hnbgw_decode_ranap_co(struct msgb *ranap_msg); diff --git a/src/osmo-hnbgw/context_map_rua.c b/src/osmo-hnbgw/context_map_rua.c index 9cb45b0..09c275d 100644 --- a/src/osmo-hnbgw/context_map_rua.c +++ b/src/osmo-hnbgw/context_map_rua.c @@ -133,22 +133,38 @@ return 0; }
+/* Decode RANAP message with convenient memory freeing: just talloc_free() the returned pointer.. + * Allocate a ranap_message from OTC_SELECT, decode RANAP msgb into it, attach a talloc destructor that calls + * ranap_cn_rx_co_free() upon talloc_free(), and return the decoded ranap_message. */ +ranap_message *hnbgw_decode_ranap_co(struct msgb *ranap_msg) +{ + int rc; + ranap_message *message; + + if (!msg_has_l2_data(ranap_msg)) + return NULL; + message = talloc_zero(OTC_SELECT, ranap_message); + rc = ranap_cn_rx_co_decode2(message, msgb_l2(ranap_msg), msgb_l2len(ranap_msg)); + if (rc != 0) { + talloc_free(message); + return NULL; + } + talloc_set_destructor(message, destruct_ranap_cn_rx_co_ies); + return message; +} + /* Dispatch RANAP message to SCCP, if any. */ static int handle_rx_rua(struct osmo_fsm_inst *fi, struct msgb *ranap_msg) { struct hnbgw_context_map *map = fi->priv; - int rc; if (!msg_has_l2_data(ranap_msg)) return 0;
/* See if it is a RAB Assignment Response message from RUA to SCCP, where we need to change the user plane * information, for RTP mapping via MGW, or GTP mapping via UPF. */ if (!map->is_ps) { - ranap_message *message = talloc_zero(OTC_SELECT, ranap_message); - rc = ranap_cn_rx_co_decode2(message, msgb_l2(ranap_msg), msgb_l2len(ranap_msg)); - if (rc == 0) { - talloc_set_destructor(message, destruct_ranap_cn_rx_co_ies); - + ranap_message *message = hnbgw_decode_ranap_co(ranap_msg); + if (message) { LOGPFSML(fi, LOGL_DEBUG, "rx from RUA: RANAP %s\n", get_value_string(ranap_procedure_code_vals, message->procedureCode));
@@ -161,11 +177,8 @@ #if ENABLE_PFCP } else if (hnb_gw_is_gtp_mapping_enabled()) { /* map->is_ps == true and PFCP is enabled in osmo-hnbgw.cfg */ - ranap_message *message = talloc_zero(OTC_SELECT, ranap_message); - rc = ranap_cn_rx_co_decode2(message, msgb_l2(ranap_msg), msgb_l2len(ranap_msg)); - if (rc == 0) { - talloc_set_destructor(message, destruct_ranap_cn_rx_co_ies); - + ranap_message *message = hnbgw_decode_ranap_co(ranap_msg); + if (message) { LOGPFSML(fi, LOGL_DEBUG, "rx from RUA: RANAP %s\n", get_value_string(ranap_procedure_code_vals, message->procedureCode));
-
neels