svn commit: r293674 - head/sys/dev/cxgbe

[Navdeep Parhar]

Author: np
Date: Mon Jan 11 17:52:42 2016
New Revision: 293674
URL: https://svnweb.freebsd.org/changeset/base/293674

Log:
  cxgbe: bind the ithreads that handle NIC rx to the correct CPU if the kernel
  is built with option RSS.

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

Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c	Mon Jan 11 17:33:51 2016	(r293673)
+++ head/sys/dev/cxgbe/t4_main.c	Mon Jan 11 17:52:42 2016	(r293674)
@@ -3642,6 +3642,9 @@ setup_intr_handlers(struct adapter *sc)
 #ifdef DEV_NETMAP
 	struct sge_nm_rxq *nm_rxq;
 #endif
+#ifdef RSS
+	int nbuckets = rss_getnumbuckets();
+#endif
 
 	/*
 	 * Setup interrupts.
@@ -3700,6 +3703,10 @@ setup_intr_handlers(struct adapter *sc)
 					    t4_intr, rxq, s);
 					if (rc != 0)
 						return (rc);
+#ifdef RSS
+					bus_bind_intr(sc->dev, irq->res,
+					    rss_getcpu(q % nbuckets));
+#endif
 					irq++;
 					rid++;
 					vi->nintr++;