From 66d3591036097a30d22d8c622e332797bc5070d7 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 15 Jan 2013 07:28:34 +0000 Subject: [PATCH] vmxnet3: use static RSS key Rather than generating a different RSS key on each boot, just use a predetermined value that will map same flow to same value on every device for more predictable testing. This is already done on most hardware drivers. Initial key value just some arbitrary bits extracted once from /dev/random. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/vmxnet3/vmxnet3_drv.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index 45c39cc4da47..9777dc62c536 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -2157,6 +2157,14 @@ vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) if (adapter->rss) { struct UPT1_RSSConf *rssConf = adapter->rss_conf; + static const uint8_t rss_key[UPT1_RSS_MAX_KEY_SIZE] = { + 0x3b, 0x56, 0xd1, 0x56, 0x13, 0x4a, 0xe7, 0xac, + 0xe8, 0x79, 0x09, 0x75, 0xe8, 0x65, 0x79, 0x28, + 0x35, 0x12, 0xb9, 0x56, 0x7c, 0x76, 0x4b, 0x70, + 0xd8, 0x56, 0xa3, 0x18, 0x9b, 0x0a, 0xee, 0xf3, + 0x96, 0xa6, 0x9f, 0x8f, 0x9e, 0x8c, 0x90, 0xc9, + }; + devRead->misc.uptFeatures |= UPT1_F_RSS; devRead->misc.numRxQueues = adapter->num_rx_queues; rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | @@ -2166,7 +2174,8 @@ vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; - get_random_bytes(&rssConf->hashKey[0], rssConf->hashKeySize); + memcpy(rssConf->hashKey, rss_key, sizeof(rss_key)); + for (i = 0; i < rssConf->indTableSize; i++) rssConf->indTable[i] = ethtool_rxfh_indir_default( i, adapter->num_rx_queues); -- 2.20.1