svn commit: r333141 - head/sys/dev/cxgbe

[Andrew Gallatin]

Author: gallatin
Date: Tue May  1 15:33:21 2018
New Revision: 333141
URL: https://svnweb.freebsd.org/changeset/base/333141

Log:
  Optionally panic when cxgbe encounters a fatal error
  
  Sometimes it is better to panic than to leave a machine
  unreachable.
  
  Reviewed by:	np
  Sponsored by:	Netflix

Modified:
  head/sys/dev/cxgbe/t4_main.c

Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c	Tue May  1 15:17:46 2018	(r333140)
+++ head/sys/dev/cxgbe/t4_main.c	Tue May  1 15:33:21 2018	(r333141)
@@ -469,6 +469,8 @@ TUNABLE_INT("hw.cxgbe.num_vis", &t4_num_vis);
 static int pcie_relaxed_ordering = -1;
 TUNABLE_INT("hw.cxgbe.pcie_relaxed_ordering", &pcie_relaxed_ordering);
 
+static int t4_panic_on_fatal_err = 0;
+TUNABLE_INT("hw.cxgbe.panic_on_fatal_err", &t4_panic_on_fatal_err);
 
 #ifdef TCP_OFFLOAD
 /*
@@ -2222,6 +2224,8 @@ t4_fatal_err(struct adapter *sc)
 	t4_intr_disable(sc);
 	log(LOG_EMERG, "%s: encountered fatal error, adapter stopped.\n",
 	    device_get_nameunit(sc->dev));
+	if (t4_panic_on_fatal_err)
+		panic("panic requested on fatal error");
 }
 
 void