[Linuxptp-devel] [PATCH 3/8] port: track interface info in port

[Hangbin L. <liu...@gm...>]

Add interface element in struct port. And update ts iface info after
device fail over.

Signed-off-by: Hangbin Liu <liu...@gm...>
---
 clock.c | 7 +++++++
 port.c  | 7 +++++++
 port.h  | 7 +++++++
 3 files changed, 21 insertions(+)

diff --git a/clock.c b/clock.c
index 5e9f2cd..67bdecb 100644
--- a/clock.c
+++ b/clock.c
@@ -331,6 +331,7 @@ static void clock_link_status(void *ctx, int index, int linkup, char *ts_iface)
 	struct clock *c = ctx;
 	struct port *p;
 	char key[16];
+	struct interface *iface;
 
 	snprintf(key, sizeof(key), "%d", index);
 	p = hash_lookup(c->index2port, key);
@@ -338,6 +339,12 @@ static void clock_link_status(void *ctx, int index, int linkup, char *ts_iface)
 		return;
 	}
 	port_link_status_set(p, linkup);
+
+	iface = port_interface_get(p);
+	if (ts_iface[0] != '\0' && strcmp(iface->ts_iface, ts_iface)) {
+		strncpy(iface->ts_iface, ts_iface, MAX_IFNAME_SIZE);
+	}
+
 	if (linkup) {
 		port_dispatch(p, EV_FAULT_CLEARED, 0);
 	} else {
diff --git a/port.c b/port.c
index ec02825..b28849f 100644
--- a/port.c
+++ b/port.c
@@ -66,6 +66,7 @@ struct nrate_estimator {
 struct port {
 	LIST_ENTRY(port) list;
 	char *name;
+	struct interface *iface;
 	struct clock *clock;
 	struct transport *trp;
 	enum timestamp_type timestamping;
@@ -2378,6 +2379,11 @@ void port_link_status_set(struct port *p, int up)
 	pr_notice("port %hu: link %s", portnum(p), up ? "up" : "down");
 }
 
+struct interface *port_interface_get(struct port *p)
+{
+	return p->iface;
+}
+
 int port_manage(struct port *p, struct port *ingress, struct ptp_message *msg)
 {
 	struct management_tlv *mgt;
@@ -2586,6 +2592,7 @@ struct port *port_open(int phc_index,
 	}
 
 	p->name = interface->name;
+	p->iface = interface;
 	p->asymmetry = config_get_int(cfg, p->name, "delayAsymmetry");
 	p->asymmetry <<= 16;
 	p->announce_span = transport == TRANS_UDS ? 0 : ANNOUNCE_SPAN;
diff --git a/port.h b/port.h
index b00bc64..7f9be42 100644
--- a/port.h
+++ b/port.h
@@ -139,6 +139,13 @@ int port_link_status_get(struct port *p);
 void port_link_status_set(struct port *p, int up);
 
 /**
+ * Obtain the interface pointer of a port.
+ * @param p        A port instance.
+ * @return         Interface pointer of the port.
+ */
+struct interface *port_interface_get(struct port *p);
+
+/**
  * Manage a port according to a given message.
  * @param p        A pointer previously obtained via port_open().
  * @param ingress  The port on which 'msg' was received.
-- 
2.5.5