From 8dff66cc4195bfaeb8764e7e1b62f2d13f311773 Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Mon, 12 Mar 2018 11:51:03 -0500 Subject: [PATCH] ibmvnic: Account for VLAN header length in TX buffers The extra four bytes of a VLAN packet was throwing off TX buffer entry values used by the driver. Account for those bytes when in buffer size and buffer entry calculations Signed-off-by: Thomas Falcon Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ibmvnic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index ea9f351eb343..14f00810db33 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -659,7 +659,7 @@ static int init_tx_pools(struct net_device *netdev) if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, adapter->req_tx_entries_per_subcrq * - adapter->req_mtu)) { + (adapter->req_mtu + VLAN_HLEN))) { release_tx_pools(adapter); return -1; } @@ -1394,9 +1394,9 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) if (tx_pool->tso_index == IBMVNIC_TSO_BUFS) tx_pool->tso_index = 0; } else { - offset = index * adapter->req_mtu; + offset = index * (adapter->req_mtu + VLAN_HLEN); dst = tx_pool->long_term_buff.buff + offset; - memset(dst, 0, adapter->req_mtu); + memset(dst, 0, adapter->req_mtu + VLAN_HLEN); data_dma_addr = tx_pool->long_term_buff.addr + offset; } -- 2.30.2