laforge has submitted this change. ( 
https://gerrit.osmocom.org/c/osmo-bsc-nat/+/27258 )

Change subject: bsc_nat_fsm: rename vars to peer_addr_{in,out}
......................................................................

bsc_nat_fsm: rename vars to peer_addr_{in,out}

Only in connection-less messages, the called party address is always the
address of the receiving peer. Prepare for connection-oriented messages
by renaming:
  dest_called -> peer_addr_out
  peer_addr   -> peer_addr_in

Related: SYS#5560
Change-Id: Ib58a4e8eb8beca23cb9f11c46576f8b17bb66f3c
---
M src/osmo-bsc-nat/bsc_nat_fsm.c
1 file changed, 18 insertions(+), 18 deletions(-)

Approvals:
  Jenkins Builder: Verified
  fixeria: Looks good to me, approved



diff --git a/src/osmo-bsc-nat/bsc_nat_fsm.c b/src/osmo-bsc-nat/bsc_nat_fsm.c
index ea57e32..48ae6f5 100644
--- a/src/osmo-bsc-nat/bsc_nat_fsm.c
+++ b/src/osmo-bsc-nat/bsc_nat_fsm.c
@@ -39,12 +39,12 @@

 static char log_buf[255];
 
-#define LOG_SCCP(ss7_inst, peer_addr, level, fmt, args...) do { \
-       if (peer_addr) \
-               osmo_sccp_addr_to_str_buf(log_buf, sizeof(log_buf), NULL, 
peer_addr); \
+#define LOG_SCCP(ss7_inst, peer_addr_in, level, fmt, args...) do { \
+       if (peer_addr_in) \
+               osmo_sccp_addr_to_str_buf(log_buf, sizeof(log_buf), NULL, 
peer_addr_in); \
        LOGP(DMAIN, level, "(%s%s%s) " fmt, \
-            peer_addr ? log_buf : "", \
-            peer_addr ? " from " : "", \
+            peer_addr_in ? log_buf : "", \
+            peer_addr_in ? " from " : "", \
             ss7_inst == g_bsc_nat->ran ? "RAN" : "CN", \
             ## args); \
 } while (0)
@@ -74,14 +74,15 @@
        struct bsc_nat_ss7_inst *src = osmo_sccp_user_get_priv(scu);
        struct bsc_nat_ss7_inst *dest = ss7_inst_dest(src);
        struct osmo_scu_prim *prim = (struct osmo_scu_prim *) oph;
-       struct osmo_sccp_addr *peer_addr;
+       struct osmo_sccp_addr *peer_addr_in;
+       struct osmo_sccp_addr peer_addr_out;
        int rc = -1;

        switch (OSMO_PRIM_HDR(oph)) {
        case OSMO_PRIM(OSMO_SCU_PRIM_N_CONNECT, PRIM_OP_INDICATION):
                /* indication of new inbound connection request */
-               peer_addr = &prim->u.connect.calling_addr;
-               LOG_SCCP(src, peer_addr, LOGL_DEBUG, "%s(%s)\n", __func__, 
osmo_scu_prim_name(oph));
+               peer_addr_in = &prim->u.connect.calling_addr;
+               LOG_SCCP(src, peer_addr_in, LOGL_DEBUG, "%s(%s)\n", __func__, 
osmo_scu_prim_name(oph));
                break;

        case OSMO_PRIM(OSMO_SCU_PRIM_N_DATA, PRIM_OP_INDICATION):
@@ -96,39 +97,38 @@

        case OSMO_PRIM(OSMO_SCU_PRIM_N_UNITDATA, PRIM_OP_INDICATION):
                /* connection-less data received */
-               peer_addr = &prim->u.unitdata.calling_addr;
-               LOG_SCCP(src, peer_addr, LOGL_DEBUG, "%s(%s)\n", __func__, 
osmo_scu_prim_name(oph));
+               peer_addr_in = &prim->u.unitdata.calling_addr;
+               LOG_SCCP(src, peer_addr_in, LOGL_DEBUG, "%s(%s)\n", __func__, 
osmo_scu_prim_name(oph));

                /* Figure out called party in dest. TODO: build and use a
                 * mapping of peer_addr + conn_id <--> dest_ss7. For now, this
                 * is simplified by assuming there is only one MSC, one BSC. */

                struct osmo_ss7_instance *dest_ss7;
-               struct osmo_sccp_addr dest_called;

                dest_ss7 = osmo_ss7_instance_find(dest->ss7_id);
                OSMO_ASSERT(dest_ss7);

                if (src == g_bsc_nat->ran) {
-                       if (osmo_sccp_addr_by_name_local(&dest_called, "msc", 
dest_ss7) < 0) {
-                               LOG_SCCP(src, peer_addr, LOGL_ERROR, "Could not 
find MSC in address book\n");
+                       if (osmo_sccp_addr_by_name_local(&peer_addr_out, "msc", 
dest_ss7) < 0) {
+                               LOG_SCCP(src, peer_addr_in, LOGL_ERROR, "Could 
not find MSC in address book\n");
                                goto error;
                        }
                } else {
-                       if (osmo_sccp_addr_by_name_local(&dest_called, "bsc", 
dest_ss7) < 0) {
-                               LOG_SCCP(src, peer_addr, LOGL_ERROR, "Could not 
find BSC in address book\n");
+                       if (osmo_sccp_addr_by_name_local(&peer_addr_out, "bsc", 
dest_ss7) < 0) {
+                               LOG_SCCP(src, peer_addr_in, LOGL_ERROR, "Could 
not find BSC in address book\n");
                                goto error;
                        }
                }

-               LOG_SCCP(src, peer_addr, LOGL_NOTICE, "Forwarding to %s in 
%s\n",
-                        osmo_sccp_inst_addr_name(NULL, &dest_called),
+               LOG_SCCP(src, peer_addr_in, LOGL_NOTICE, "Forwarding to %s in 
%s\n",
+                        osmo_sccp_inst_addr_name(NULL, &peer_addr_out),
                         dest == g_bsc_nat->ran ? "RAN" : "CN");

                /* oph->msg stores oph and unitdata msg. Move oph->msg->data to
                 * unitdata msg and send it again. */
                msgb_pull_to_l2(oph->msg);
-               osmo_sccp_tx_unitdata(dest->scu, &dest->local_sccp_addr, 
&dest_called, oph->msg->data,
+               osmo_sccp_tx_unitdata(dest->scu, &dest->local_sccp_addr, 
&peer_addr_out, oph->msg->data,
                                      msgb_length(oph->msg));
                rc = 0;
                break;

--
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Gerrit-Project: osmo-bsc-nat
Gerrit-Branch: master
Gerrit-Change-Id: Ib58a4e8eb8beca23cb9f11c46576f8b17bb66f3c
Gerrit-Change-Number: 27258
Gerrit-PatchSet: 2
Gerrit-Owner: osmith <[email protected]>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <[email protected]>
Gerrit-Reviewer: laforge <[email protected]>
Gerrit-MessageType: merged

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