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hv_netvsc: Add handler for LRO setting change 

This patch adds the handler for LRO setting change, so that a user
can use ethtool command to enable / disable LRO feature.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haiyang Zhang 2018-09-21 18:20:36 +00:00 committed by David S. Miller
parent c8e4eff467
commit d6792a5a07
3 changed files with 42 additions and 3 deletions
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4
drivers/net/hyperv/hyperv_net.h
View File

@ -185,6 +185,7 @@ struct rndis_device {
/* Interface */
struct rndis_message;
struct ndis_offload_params;
struct netvsc_device;
struct netvsc_channel;
struct net_device_context;
@ -218,6 +219,9 @@ void rndis_filter_device_remove(struct hv_device *dev,
struct netvsc_device *nvdev);
int rndis_filter_set_rss_param(struct rndis_device *rdev,
const u8 *key);
int rndis_filter_set_offload_params(struct net_device *ndev,
struct netvsc_device *nvdev,
struct ndis_offload_params *req_offloads);
int rndis_filter_receive(struct net_device *ndev,
struct netvsc_device *net_dev,
struct netvsc_channel *nvchan,

30
drivers/net/hyperv/netvsc_drv.c
View File

@ -1006,6 +1006,8 @@ static void netvsc_init_settings(struct net_device *dev)
ndc->speed = SPEED_UNKNOWN;
ndc->duplex = DUPLEX_FULL;
dev->features = NETIF_F_LRO;
}
static int netvsc_get_link_ksettings(struct net_device *dev,
@ -1733,6 +1735,33 @@ static int netvsc_set_ringparam(struct net_device *ndev,
return ret;
}
static int netvsc_set_features(struct net_device *ndev,
netdev_features_t features)
{
netdev_features_t change = features ^ ndev->features;
struct net_device_context *ndevctx = netdev_priv(ndev);
struct netvsc_device *nvdev = rtnl_dereference(ndevctx->nvdev);
struct ndis_offload_params offloads;
if (!nvdev || nvdev->destroy)
return -ENODEV;
if (!(change & NETIF_F_LRO))
return 0;
memset(&offloads, 0, sizeof(struct ndis_offload_params));
if (features & NETIF_F_LRO) {
offloads.rsc_ip_v4 = NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED;
offloads.rsc_ip_v6 = NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED;
} else {
offloads.rsc_ip_v4 = NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED;
offloads.rsc_ip_v6 = NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED;
}
return rndis_filter_set_offload_params(ndev, nvdev, &offloads);
}
static u32 netvsc_get_msglevel(struct net_device *ndev)
{
struct net_device_context *ndev_ctx = netdev_priv(ndev);
@ -1776,6 +1805,7 @@ static const struct net_device_ops device_ops = {
.ndo_start_xmit = netvsc_start_xmit,
.ndo_change_rx_flags = netvsc_change_rx_flags,
.ndo_set_rx_mode = netvsc_set_rx_mode,
.ndo_set_features = netvsc_set_features,
.ndo_change_mtu = netvsc_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = netvsc_set_mac_addr,

11
drivers/net/hyperv/rndis_filter.c
View File

@ -716,7 +716,7 @@ int rndis_filter_set_device_mac(struct netvsc_device *nvdev,
return ret;
}
static int
int
rndis_filter_set_offload_params(struct net_device *ndev,
struct netvsc_device *nvdev,
struct ndis_offload_params *req_offloads)
@ -1246,8 +1246,13 @@ static int rndis_netdev_set_hwcaps(struct rndis_device *rndis_device,
if (hwcaps.rsc.ip4 && hwcaps.rsc.ip6) {
net->hw_features |= NETIF_F_LRO;
offloads.rsc_ip_v4 = NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED;
offloads.rsc_ip_v6 = NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED;
if (net->features & NETIF_F_LRO) {
offloads.rsc_ip_v4 = NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED;
offloads.rsc_ip_v6 = NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED;
} else {
offloads.rsc_ip_v4 = NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED;
offloads.rsc_ip_v6 = NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED;
}
}
/* In case some hw_features disappeared we need to remove them from