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Merge branch 'ibmvnic-features' 

Thomas Falcon says:

====================
ibmvnic: Fix netdev features settings on reset

In its current state, a driver reset clobbers any feature settings
a user may have toggled and will disable GRO as it is not explicitly
enabled in the driver. This patch set enables GRO and tries to retain
user settings after a reset. If the underlying carrier changes, however,
the driver will disable features unsupported by the new carrier.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-04-10 12:29:37 -07:00
parent f8d49bee4a dde746a35f
commit f4a5885715
1 changed files with 25 additions and 7 deletions
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32
drivers/net/ethernet/ibm/ibmvnic.c
View File

@ -3762,6 +3762,7 @@ static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
{
struct device *dev = &adapter->vdev->dev;
struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
netdev_features_t old_hw_features = 0;
union ibmvnic_crq crq;
int i;
@ -3837,24 +3838,41 @@ static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
adapter->netdev->features = NETIF_F_SG | NETIF_F_GSO;
if (adapter->state != VNIC_PROBING) {
old_hw_features = adapter->netdev->hw_features;
adapter->netdev->hw_features = 0;
}
adapter->netdev->hw_features = NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
adapter->netdev->features |= NETIF_F_IP_CSUM;
adapter->netdev->hw_features |= NETIF_F_IP_CSUM;
if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
adapter->netdev->features |= NETIF_F_IPV6_CSUM;
adapter->netdev->hw_features |= NETIF_F_IPV6_CSUM;
if ((adapter->netdev->features &
(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
adapter->netdev->features |= NETIF_F_RXCSUM;
adapter->netdev->hw_features |= NETIF_F_RXCSUM;
if (buf->large_tx_ipv4)
adapter->netdev->features |= NETIF_F_TSO;
adapter->netdev->hw_features |= NETIF_F_TSO;
if (buf->large_tx_ipv6)
adapter->netdev->features |= NETIF_F_TSO6;
adapter->netdev->hw_features |= NETIF_F_TSO6;
adapter->netdev->hw_features |= adapter->netdev->features;
if (adapter->state == VNIC_PROBING) {
adapter->netdev->features |= adapter->netdev->hw_features;
} else if (old_hw_features != adapter->netdev->hw_features) {
netdev_features_t tmp = 0;
/* disable features no longer supported */
adapter->netdev->features &= adapter->netdev->hw_features;
/* turn on features now supported if previously enabled */
tmp = (old_hw_features ^ adapter->netdev->hw_features) &
adapter->netdev->hw_features;
adapter->netdev->features |=
tmp & adapter->netdev->wanted_features;
}
memset(&crq, 0, sizeof(crq));
crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;