vmxnet3: use netdev_rss_key_fill() helper

Use of well known RSS key increases attack surface.
Switch to a random one, using generic helper so that all
ports share a common key.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Shreyas Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 6dfcbf523936ef69527f5d23168dbf51ee638094..afd295348ddbe0eb968cd884f657b2b7c2857ebe 100644 (file)
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2199,13 +2199,6 @@ 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;
@@ -2216,7 +2209,7 @@ 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;
-               memcpy(rssConf->hashKey, rss_key, sizeof(rss_key));
+               netdev_rss_key_fill(rssConf->hashKey, sizeof(rssConf->hashKey));
 
                for (i = 0; i < rssConf->indTableSize; i++)
                        rssConf->indTable[i] = ethtool_rxfh_indir_default(