#include "flow.h"
#include "mac-learning.h"
#include "ofpbuf.h"
+#include "ofp-parse.h"
#include "ofp-print.h"
#include "ofp-util.h"
#include "openflow/openflow.h"
static void queue_tx(struct lswitch *, struct rconn *, struct ofpbuf *);
static void send_features_request(struct lswitch *, struct rconn *);
+static void send_default_flows(struct lswitch *sw, struct rconn *rconn,
+ FILE *default_flows);
static void schedule_query(struct lswitch *, long long int delay);
static bool may_learn(const struct lswitch *, uint16_t port_no);
static bool may_recv(const struct lswitch *, uint16_t port_no,
* after the given number of seconds (or never expire, if 'max_idle' is
* OFP_FLOW_PERMANENT). Otherwise, the new switch will process every packet.
*
+ * The caller may provide the file stream 'default_flows' that defines
+ * default flows that should be pushed when a switch connects. Each
+ * line is a flow entry in the format described for "add-flows" command
+ * in the Flow Syntax section of the ovs-ofct(8) man page. The caller
+ * is responsible for closing the stream.
+ *
* 'rconn' is used to send out an OpenFlow features request. */
struct lswitch *
lswitch_create(struct rconn *rconn, bool learn_macs,
- bool exact_flows, int max_idle, bool action_normal)
+ bool exact_flows, int max_idle, bool action_normal,
+ FILE *default_flows)
{
struct lswitch *sw;
size_t i;
sw->port_states[i] = P_DISABLED;
}
send_features_request(sw, rconn);
+ if (default_flows) {
+ send_default_flows(sw, rconn, default_flows);
+ }
return sw;
}
}
}
+static void
+send_default_flows(struct lswitch *sw, struct rconn *rconn,
+ FILE *default_flows)
+{
+ char line[1024];
+
+ while (fgets(line, sizeof line, default_flows)) {
+ struct ofpbuf *b;
+ struct ofp_flow_mod *ofm;
+ uint16_t priority, idle_timeout, hard_timeout;
+ uint64_t cookie;
+ struct ofp_match match;
+
+ char *comment;
+
+ /* Delete comments. */
+ comment = strchr(line, '#');
+ if (comment) {
+ *comment = '\0';
+ }
+
+ /* Drop empty lines. */
+ if (line[strspn(line, " \t\n")] == '\0') {
+ continue;
+ }
+
+ /* Parse and send. str_to_flow() will expand and reallocate the data
+ * in 'buffer', so we can't keep pointers to across the str_to_flow()
+ * call. */
+ make_openflow(sizeof *ofm, OFPT_FLOW_MOD, &b);
+ parse_ofp_str(line, &match, b,
+ NULL, NULL, &priority, &idle_timeout, &hard_timeout,
+ &cookie);
+ ofm = b->data;
+ ofm->match = match;
+ ofm->command = htons(OFPFC_ADD);
+ ofm->cookie = htonll(cookie);
+ ofm->idle_timeout = htons(idle_timeout);
+ ofm->hard_timeout = htons(hard_timeout);
+ ofm->buffer_id = htonl(UINT32_MAX);
+ ofm->priority = htons(priority);
+
+ update_openflow_length(b);
+ queue_tx(sw, rconn, b);
+ }
+}
+
static void
queue_tx(struct lswitch *sw, struct rconn *rconn, struct ofpbuf *b)
{