[dpdk-dev] [PATCH v2] net/sfc: do not panic if alarms are not supported

[Andrew Rybchenko <arybchenko@solarflare.com>]

Alarms are not supported on the FreeBSD.
Application must poll link status periodically itself using
rte_eth_link_get_nowait() to avoid management event queue overflow.

Fixes: 2de39f4e1310 ("net/sfc: periodic management EVQ polling using alarm")

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@solarflare.com>
---
v2:
 - fix spelling

 drivers/net/sfc/sfc_ev.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/sfc/sfc_ev.c b/drivers/net/sfc/sfc_ev.c
index c788986..fe6de6f 100644
--- a/drivers/net/sfc/sfc_ev.c
+++ b/drivers/net/sfc/sfc_ev.c
@@ -499,10 +499,14 @@
 
 	rc = rte_eal_alarm_set(SFC_MGMT_EV_QPOLL_PERIOD_US,
 			       sfc_ev_mgmt_periodic_qpoll, sa);
-	if (rc != 0)
-		sfc_panic(sa,
-			  "cannot rearm management EVQ polling alarm (rc=%d)",
-			  rc);
+	if (rc == -ENOTSUP) {
+		sfc_warn(sa, "alarms are not supported");
+		sfc_warn(sa, "management EVQ must be polled indirectly using no-wait link status update");
+	} else if (rc != 0) {
+		sfc_err(sa,
+			"cannot rearm management EVQ polling alarm (rc=%d)",
+			rc);
+	}
 }
 
 static void
-- 
1.8.2.3