From: Eric Leblond <eric@regit.org>
Date: Mon, 25 Feb 2019 22:54:11 +0000 (+0100)
Subject: ebpf: set number of RSS queues to a power of 2
X-Git-Tag: suricata-5.0.0-rc1~367
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f270e534773e0dcddac73df36ec49e7a7b4d9a49;p=thirdparty%2Fsuricata.git

ebpf: set number of RSS queues to a power of 2

This is needed as netronome can not do a division (so can't do a modulo)
in hardware.
---

diff --git a/ebpf/xdp_filter.c b/ebpf/xdp_filter.c
index cc18c0dcad..07bf6f9d97 100644
--- a/ebpf/xdp_filter.c
+++ b/ebpf/xdp_filter.c
@@ -46,8 +46,8 @@
 #define GOT_TX_PEER	1
 
 /* set to non 0 to load balance in hardware mode on RSS_QUEUE_NUMBERS queues
- * and unset BUILD_CPUMAP */
-#define RSS_QUEUE_NUMBERS   40
+ * and unset BUILD_CPUMAP (number must be a power of 2 for netronome) */
+#define RSS_QUEUE_NUMBERS   32
 
 struct vlan_hdr {
     __u16	h_vlan_TCI;