From: Haiyang Zhang haiyangz@microsoft.com
[ Upstream commit b0689faa8efc5a3391402d7ae93bd373b7248e51 ]
In existing code, the receive indirection table, rx_table, is in struct rndis_device, which will be reset when changing MTU, ringparam, etc. User configured receive indirection table values will be lost.
To fix this, move rx_table to struct net_device_context, and check netif_is_rxfh_configured(), so rx_table will be set to default only if no user configured value.
Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table") Signed-off-by: Haiyang Zhang haiyangz@microsoft.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/hyperv/hyperv_net.h | 3 ++- drivers/net/hyperv/netvsc_drv.c | 4 ++-- drivers/net/hyperv/rndis_filter.c | 10 +++++++--- 3 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index 31d8d83..50709c7 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -181,7 +181,6 @@ struct rndis_device {
u8 hw_mac_adr[ETH_ALEN]; u8 rss_key[NETVSC_HASH_KEYLEN]; - u16 rx_table[ITAB_NUM]; };
@@ -933,6 +932,8 @@ struct net_device_context {
u32 tx_table[VRSS_SEND_TAB_SIZE];
+ u16 rx_table[ITAB_NUM]; + /* Ethtool settings */ u8 duplex; u32 speed; diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index b7a71c2..1f9f7fc 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -1688,7 +1688,7 @@ static int netvsc_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, rndis_dev = ndev->extension; if (indir) { for (i = 0; i < ITAB_NUM; i++) - indir[i] = rndis_dev->rx_table[i]; + indir[i] = ndc->rx_table[i]; }
if (key) @@ -1718,7 +1718,7 @@ static int netvsc_set_rxfh(struct net_device *dev, const u32 *indir, return -EINVAL;
for (i = 0; i < ITAB_NUM; i++) - rndis_dev->rx_table[i] = indir[i]; + ndc->rx_table[i] = indir[i]; }
if (!key) { diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 53c6039..f47e36a 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -719,6 +719,7 @@ static int rndis_set_rss_param_msg(struct rndis_device *rdev, const u8 *rss_key, u16 flag) { struct net_device *ndev = rdev->ndev; + struct net_device_context *ndc = netdev_priv(ndev); struct rndis_request *request; struct rndis_set_request *set; struct rndis_set_complete *set_complete; @@ -758,7 +759,7 @@ static int rndis_set_rss_param_msg(struct rndis_device *rdev, /* Set indirection table entries */ itab = (u32 *)(rssp + 1); for (i = 0; i < ITAB_NUM; i++) - itab[i] = rdev->rx_table[i]; + itab[i] = ndc->rx_table[i];
/* Set hask key values */ keyp = (u8 *)((unsigned long)rssp + rssp->hashkey_offset); @@ -1244,6 +1245,7 @@ struct netvsc_device *rndis_filter_device_add(struct hv_device *dev, struct netvsc_device_info *device_info) { struct net_device *net = hv_get_drvdata(dev); + struct net_device_context *ndc = netdev_priv(net); struct netvsc_device *net_device; struct rndis_device *rndis_device; struct ndis_recv_scale_cap rsscap; @@ -1330,9 +1332,11 @@ struct netvsc_device *rndis_filter_device_add(struct hv_device *dev, /* We will use the given number of channels if available. */ net_device->num_chn = min(net_device->max_chn, device_info->num_chn);
- for (i = 0; i < ITAB_NUM; i++) - rndis_device->rx_table[i] = ethtool_rxfh_indir_default( + if (!netif_is_rxfh_configured(net)) { + for (i = 0; i < ITAB_NUM; i++) + ndc->rx_table[i] = ethtool_rxfh_indir_default( i, net_device->num_chn); + }
atomic_set(&net_device->open_chn, 1); vmbus_set_sc_create_callback(dev->channel, netvsc_sc_open);