cosmetic: rename next_seid to next_up_seid

There are UP-SEID and CP-SEID. Only UP-SEID are chosen by the UPF.
Clarify naming.

Change-Id: Ib725857079400accb4781f8a91eca6495b6b92a9
---
M include/osmocom/upf/up_endpoint.h
M src/osmo-upf/up_endpoint.c
M src/osmo-upf/up_session.c
3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/include/osmocom/upf/up_endpoint.h b/include/osmocom/upf/up_endpoint.h
index 12ab548..58fe01c 100644
--- a/include/osmocom/upf/up_endpoint.h
+++ b/include/osmocom/upf/up_endpoint.h
@@ -38,10 +38,10 @@
 	/* list of struct up_peer. */
 	struct llist_head peers;
 
-	uint64_t next_seid_state;
+	uint64_t next_up_seid_state;
 };
 
 struct up_endpoint *up_endpoint_init(void *ctx, const struct osmo_sockaddr *local_addr);
 void up_endpoint_free(struct up_endpoint **ep);
 
-uint64_t up_endpoint_next_seid(struct up_endpoint *ep);
+uint64_t up_endpoint_next_up_seid(struct up_endpoint *ep);
diff --git a/src/osmo-upf/up_endpoint.c b/src/osmo-upf/up_endpoint.c
index 4500a43..7a2628a 100644
--- a/src/osmo-upf/up_endpoint.c
+++ b/src/osmo-upf/up_endpoint.c
@@ -271,11 +271,11 @@
 		return NULL;
 }
 
-uint64_t up_endpoint_next_seid(struct up_endpoint *ep)
+uint64_t up_endpoint_next_up_seid(struct up_endpoint *ep)
 {
 	uint64_t sanity;
 	for (sanity = 2342; sanity; sanity--) {
-		uint64_t next_seid = osmo_pfcp_next_seid(&ep->next_seid_state);
+		uint64_t next_seid = osmo_pfcp_next_seid(&ep->next_up_seid_state);
 		if (up_endpoint_find_session(ep, next_seid))
 			continue;
 		return next_seid;
diff --git a/src/osmo-upf/up_session.c b/src/osmo-upf/up_session.c
index bbf994e..5874f3c 100644
--- a/src/osmo-upf/up_session.c
+++ b/src/osmo-upf/up_session.c
@@ -986,7 +986,7 @@
 static struct up_session *up_session_add(struct up_peer *peer, const struct osmo_pfcp_ie_f_seid *cp_f_seid)
 {
 	struct up_session *session;
-	uint64_t up_seid = up_endpoint_next_seid(peer->up_endpoint);
+	uint64_t up_seid = up_endpoint_next_up_seid(peer->up_endpoint);
 
 	if (!up_seid)
 		return NULL;

