Merge remote-tracking branch 'origin/issue-920-fix-crash-sctp' into integration_2025_w12 (!3315)

SCTP: avoid assert on partial SCTP message

The receive buffer for SCTP, before this branch, is 8192. If a message
is larger, we receive only a partial message, which makes the gNB abort.
Remove the abort to not be susceptible to a message intended to crash
the gNB.

also, increase the receive buffer to be more forgiving for large messages

Closes: #920

openair3/SCTP/sctp_default_values.h

@@ -26,6 +26,6 @@
 #define SCTP_IN_STREAMS         (16)
 #define SCTP_MAX_ATTEMPTS       (8)
 #define SCTP_TIMEOUT            (60000)
-#define SCTP_RECV_BUFFER_SIZE   (8192)
+#define SCTP_RECV_BUFFER_SIZE   (65536)
 
 #endif /* SCTP_DEFAULT_VALUES_H_ */

openair3/SCTP/sctp_eNB_task.c

@@ -806,8 +806,8 @@ sctp_eNB_read_from_socket(
     }
 
     if (!(flags & MSG_EOR)) {
-      SCTP_ERROR("fatal: partial SCTP messages are not handled\n");
-      exit_fun("fatal: partial SCTP messages are not handled" );
+      SCTP_ERROR("partial SCTP message received, discarding message\n");
+      return;
     }
 
     if (flags & MSG_NOTIFICATION) {