/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* identifies a "null" packet buffer (created with pktbuf_get_null()), stores
* NULL in '*bufferp' and UINT16_max in '*in_port'.
*
+ * 'in_port' may be NULL if the input port is not of interest.
+ *
* A returned packet will have at least sizeof(struct ofp_packet_in) bytes of
* headroom.
*
struct packet *p;
int error;
+ if (id == UINT32_MAX) {
+ error = 0;
+ goto error;
+ }
+
if (!pb) {
VLOG_WARN_RL(&rl, "attempt to send buffered packet via connection "
"without buffers");
struct ofpbuf *buffer = p->buffer;
if (buffer) {
*bufferp = buffer;
- *in_port = p->in_port;
+ if (in_port) {
+ *in_port = p->in_port;
+ }
p->buffer = NULL;
COVERAGE_INC(pktbuf_retrieved);
return 0;
"if the switch was recently in fail-open mode)", id);
error = 0;
}
+error:
*bufferp = NULL;
- *in_port = UINT16_MAX;
+ if (in_port) {
+ *in_port = UINT16_MAX;
+ }
return error;
}