From 7991cb9cfbce1b60ac1cff819350b05de4d902e1 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Wed, 11 Apr 2018 11:50:13 -0400 Subject: [PATCH] bnxt_en: Fix ethtool -x crash when device is down. Fix ethtool .get_rxfh() crash by checking for valid indirection table address before copying the data. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 8d8ccd67e0e2..1f622ca2a64f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -870,17 +870,22 @@ static int bnxt_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, u8 *hfunc) { struct bnxt *bp = netdev_priv(dev); - struct bnxt_vnic_info *vnic = &bp->vnic_info[0]; + struct bnxt_vnic_info *vnic; int i = 0; if (hfunc) *hfunc = ETH_RSS_HASH_TOP; - if (indir) + if (!bp->vnic_info) + return 0; + + vnic = &bp->vnic_info[0]; + if (indir && vnic->rss_table) { for (i = 0; i < HW_HASH_INDEX_SIZE; i++) indir[i] = le16_to_cpu(vnic->rss_table[i]); + } - if (key) + if (key && vnic->rss_hash_key) memcpy(key, vnic->rss_hash_key, HW_HASH_KEY_SIZE); return 0; -- 2.11.0