Make LAG LACP fast timeout tunable through IOCTL.

Differential Revision:	D3300
Submitted by:		LN Sundararajan <lakshmi.n at msystechnologies>
Reviewed by:		wblock, smh, gnn, hiren, rpokala at panasas
MFC after:		2 weeks
Sponsored by:		Panasas

4 files changed, 22 insertions, 1 deletions

diff --git a/sys/net/ieee8023ad_lacp.c b/sys/net/ieee8023ad_lacp.c
index 64aafb1..1af4ffc 100644
--- a/sys/net/ieee8023ad_lacp.c
+++ b/sys/net/ieee8023ad_lacp.c
@@ -522,7 +522,7 @@ lacp_port_create(struct lagg_port *lgp)
 	int error;
 
 	boolean_t active = TRUE; /* XXX should be configurable */
-	boolean_t fast = FALSE; /* XXX should be configurable */
+	boolean_t fast = FALSE; /* Configurable via ioctl */ 
 
 	link_init_sdl(ifp, (struct sockaddr *)&sdl, IFT_ETHER);
 	sdl.sdl_alen = ETHER_ADDR_LEN;
diff --git a/sys/net/ieee8023ad_lacp.h b/sys/net/ieee8023ad_lacp.h
index e814f83..8f0f51a 100644
--- a/sys/net/ieee8023ad_lacp.h
+++ b/sys/net/ieee8023ad_lacp.h
@@ -251,6 +251,7 @@ struct lacp_softc {
 		u_int32_t	lsc_tx_test;
 	} lsc_debug;
 	u_int32_t		lsc_strict_mode;
+	boolean_t		lsc_fast_timeout; /* if set, fast timeout */
 };
 
 #define	LACP_TYPE_ACTORINFO	1
diff --git a/sys/net/if_lagg.c b/sys/net/if_lagg.c
index dcd005a..b623493 100644
--- a/sys/net/if_lagg.c
+++ b/sys/net/if_lagg.c
@@ -1257,6 +1257,8 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 				ro->ro_opts |= LAGG_OPT_LACP_RXTEST;
 			if (lsc->lsc_strict_mode != 0)
 				ro->ro_opts |= LAGG_OPT_LACP_STRICT;
+			if (lsc->lsc_fast_timeout != 0)
+				ro->ro_opts |= LAGG_OPT_LACP_TIMEOUT;
 
 			ro->ro_active = sc->sc_active;
 		} else {
@@ -1292,6 +1294,8 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 		case -LAGG_OPT_LACP_RXTEST:
 		case LAGG_OPT_LACP_STRICT:
 		case -LAGG_OPT_LACP_STRICT:
+		case LAGG_OPT_LACP_TIMEOUT:
+		case -LAGG_OPT_LACP_TIMEOUT:
 			valid = lacp = 1;
 			break;
 		default:
@@ -1320,6 +1324,7 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 				sc->sc_opts &= ~ro->ro_opts;
 		} else {
 			struct lacp_softc *lsc;
+			struct lacp_port *lp;
 
 			lsc = (struct lacp_softc *)sc->sc_psc;
 
@@ -1342,6 +1347,20 @@ lagg_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 			case -LAGG_OPT_LACP_STRICT:
 				lsc->lsc_strict_mode = 0;
 				break;
+			case LAGG_OPT_LACP_TIMEOUT:
+				LACP_LOCK(lsc);
+        			LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
+                        		lp->lp_state |= LACP_STATE_TIMEOUT;
+				LACP_UNLOCK(lsc);
+				lsc->lsc_fast_timeout = 1;
+				break;
+			case -LAGG_OPT_LACP_TIMEOUT:
+				LACP_LOCK(lsc);
+        			LIST_FOREACH(lp, &lsc->lsc_ports, lp_next)
+                        		lp->lp_state &= ~LACP_STATE_TIMEOUT;
+				LACP_UNLOCK(lsc);
+				lsc->lsc_fast_timeout = 0;
+				break;
 			}
 		}
 		LAGG_WUNLOCK(sc);
diff --git a/sys/net/if_lagg.h b/sys/net/if_lagg.h
index a45fa16..bb5ea23 100644
--- a/sys/net/if_lagg.h
+++ b/sys/net/if_lagg.h
@@ -150,6 +150,7 @@ struct lagg_reqopts {
 #define	LAGG_OPT_LACP_STRICT		0x10		/* LACP strict mode */
 #define	LAGG_OPT_LACP_TXTEST		0x20		/* LACP debug: txtest */
 #define	LAGG_OPT_LACP_RXTEST		0x40		/* LACP debug: rxtest */
+#define	LAGG_OPT_LACP_TIMEOUT		0x80		/* LACP timeout */
 	u_int			ro_count;		/* number of ports */
 	u_int			ro_active;		/* active port count */
 	u_int			ro_flapping;		/* number of flapping */