[Linuxarm] [RFC net-next] net: extend netdev features

For the prototype of netdev_features_t is u64, and the number of netdevice feature bits is 64 now. So there is no space to introduce new feature bit.

I did a small change for this. Keep the prototype of netdev_feature_t, and extend the feature members in struct net_device to an array of netdev_features_t. So more features bits can be used.

As this change, some functions which use netdev_features_t as parameter or returen value will be affected. I did below changes: a. parameter: "netdev_features_t" to "netdev_features_t *" b. return value: "netdev_feature_t" to "void", and add "netdev_feature_t *" as output parameter.

I kept some functions no change, which are surely useing the first 64 bit of net device features now, such as function nedev_add_tso_features(). In order to minimize to changes.

For the features are array now, so it's unable to do logical operation directly. I introduce a inline function set for them, including "netdev_features_and/andnot/or/xor/equal/empty".

For NETDEV_FEATURE_COUNT may be more than 64, so the shift operation for NETDEV_FEATURE_COUNT is illegal. I changed some macroes and functions, which does shift opertion with it.

I haven't finished all the changes, for it affected all the drivers which use the feature, need more time and test. I sent this RFC patch, want to know whether this change is acceptable, and how to improve it.

Any comments will be helpful.

Signed-off-by: Jian Shen shenjian15@huawei.com --- drivers/net/ethernet/hisilicon/hns/hns_enet.c | 34 +-- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 97 ++++----- drivers/net/ethernet/huawei/hinic/hinic_main.c | 71 +++--- drivers/net/ethernet/huawei/hinic/hinic_rx.c | 4 +- include/linux/if_vlan.h | 2 +- include/linux/netdev_features.h | 105 ++++++++- include/linux/netdevice.h | 31 +-- net/8021q/vlan.c | 4 +- net/8021q/vlan.h | 2 +- net/8021q/vlan_dev.c | 49 +++-- net/core/dev.c | 276 ++++++++++++------------ net/core/netpoll.c | 6 +- net/ethtool/features.c | 56 +++-- net/ethtool/ioctl.c | 93 +++++--- 14 files changed, 493 insertions(+), 337 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index ad534f9..4f245cf 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -479,7 +479,7 @@ static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data, u32 l4id;

/* check if RX checksum offload is enabled */ - if (unlikely(!(netdev->features & NETIF_F_RXCSUM))) + if (unlikely(!(netdev->features[0] & NETIF_F_RXCSUM))) return;

/* In hardware, we only support checksum for the following protocols: @@ -1768,17 +1768,17 @@ static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) }

static int hns_nic_set_features(struct net_device *netdev, - netdev_features_t features) + netdev_features_t *features) { struct hns_nic_priv *priv = netdev_priv(netdev);

switch (priv->enet_ver) { case AE_VERSION_1: - if (features & (NETIF_F_TSO | NETIF_F_TSO6)) + if (features[0] & (NETIF_F_TSO | NETIF_F_TSO6)) netdev_info(netdev, "enet v1 do not support tso!\n"); break; default: - if (features & (NETIF_F_TSO | NETIF_F_TSO6)) { + if (features[0] & (NETIF_F_TSO | NETIF_F_TSO6)) { priv->ops.fill_desc = fill_tso_desc; priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; /* The chip only support 7*4096 */ @@ -1789,24 +1789,23 @@ static int hns_nic_set_features(struct net_device *netdev, } break; } - netdev->features = features; + netdev->features[0] = features[0]; return 0; }

-static netdev_features_t hns_nic_fix_features( - struct net_device *netdev, netdev_features_t features) +static void hns_nic_fix_features(struct net_device *netdev, + netdev_features_t *features) { struct hns_nic_priv *priv = netdev_priv(netdev);

switch (priv->enet_ver) { case AE_VERSION_1: - features &= ~(NETIF_F_TSO | NETIF_F_TSO6 | + features[0] &= ~(NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_FILTER); break; default: break; } - return features; }

static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr) @@ -2163,8 +2162,8 @@ static void hns_nic_set_priv_ops(struct net_device *netdev) priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; } else { priv->ops.get_rxd_bnum = get_v2rx_desc_bnum; - if ((netdev->features & NETIF_F_TSO) || - (netdev->features & NETIF_F_TSO6)) { + if ((netdev->features[0] & NETIF_F_TSO) || + (netdev->features[0] & NETIF_F_TSO6)) { priv->ops.fill_desc = fill_tso_desc; priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; /* This chip only support 7*4096 */ @@ -2325,22 +2324,23 @@ static int hns_nic_dev_probe(struct platform_device *pdev) ndev->netdev_ops = &hns_nic_netdev_ops; hns_ethtool_set_ops(ndev);

- ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + ndev->features[0] |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; - ndev->vlan_features |= + ndev->vlan_features[0] |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; - ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; + ndev->vlan_features[0] |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;

/* MTU range: 68 - 9578 (v1) or 9706 (v2) */ ndev->min_mtu = MAC_MIN_MTU; switch (priv->enet_ver) { case AE_VERSION_2: - ndev->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_NTUPLE; - ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + ndev->features[0] |= + NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_NTUPLE; + ndev->hw_features[0] |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6; - ndev->vlan_features |= NETIF_F_TSO | NETIF_F_TSO6; + ndev->vlan_features[0] |= NETIF_F_TSO | NETIF_F_TSO6; ndev->max_mtu = MAC_MAX_MTU_V2 - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); break; diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index cdb5f14..ba56907 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -1481,7 +1481,7 @@ static int hns3_handle_vtags(struct hns3_enet_ring *tx_ring, return -EINVAL;

if (skb->protocol == htons(ETH_P_8021Q) && - !(handle->kinfo.netdev->features & NETIF_F_HW_VLAN_CTAG_TX)) { + !(handle->kinfo.netdev->features[0] & NETIF_F_HW_VLAN_CTAG_TX)) { /* When HW VLAN acceleration is turned off, and the stack * sets the protocol to 802.1q, the driver just need to * set the protocol to the encapsulated ethertype. @@ -2300,56 +2300,57 @@ static int hns3_nic_do_ioctl(struct net_device *netdev, }

static int hns3_nic_set_features(struct net_device *netdev, - netdev_features_t features) + netdev_features_t *features) { - netdev_features_t changed = netdev->features ^ features; + netdev_features_t changed[NETDEV_FEATURE_DWORDS]; struct hns3_nic_priv *priv = netdev_priv(netdev); struct hnae3_handle *h = priv->ae_handle; bool enable; int ret;

- if (changed & (NETIF_F_GRO_HW) && h->ae_algo->ops->set_gro_en) { - enable = !!(features & NETIF_F_GRO_HW); + netdev_features_xor(changed, netdev->features, features); + if (changed[0] & (NETIF_F_GRO_HW) && h->ae_algo->ops->set_gro_en) { + enable = !!(features[0] & NETIF_F_GRO_HW); ret = h->ae_algo->ops->set_gro_en(h, enable); if (ret) return ret; }

- if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && + if ((changed[0] & NETIF_F_HW_VLAN_CTAG_RX) && h->ae_algo->ops->enable_hw_strip_rxvtag) { - enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX); + enable = !!(features[0] & NETIF_F_HW_VLAN_CTAG_RX); ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, enable); if (ret) return ret; }

- if ((changed & NETIF_F_NTUPLE) && h->ae_algo->ops->enable_fd) { - enable = !!(features & NETIF_F_NTUPLE); + if ((changed[0] & NETIF_F_NTUPLE) && h->ae_algo->ops->enable_fd) { + enable = !!(features[0] & NETIF_F_NTUPLE); h->ae_algo->ops->enable_fd(h, enable); }

- if ((netdev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) && + if ((netdev->features[0] & NETIF_F_HW_TC) > + (features[0] & NETIF_F_HW_TC) && h->ae_algo->ops->cls_flower_active(h)) { netdev_err(netdev, "there are offloaded TC filters active, cannot disable HW TC offload"); return -EINVAL; }

- if ((changed & NETIF_F_HW_VLAN_CTAG_FILTER) && + if ((changed[0] & NETIF_F_HW_VLAN_CTAG_FILTER) && h->ae_algo->ops->enable_vlan_filter) { - enable = !!(features & NETIF_F_HW_VLAN_CTAG_FILTER); + enable = !!(features[0] & NETIF_F_HW_VLAN_CTAG_FILTER); ret = h->ae_algo->ops->enable_vlan_filter(h, enable); if (ret) return ret; }

- netdev->features = features; + netdev_features_copy(netdev->features, features); return 0; }

-static netdev_features_t hns3_features_check(struct sk_buff *skb, - struct net_device *dev, - netdev_features_t features) +static void hns3_features_check(struct sk_buff *skb, struct net_device *dev, + netdev_features_t *features) { #define HNS3_MAX_HDR_LEN 480U #define HNS3_MAX_L4_HDR_LEN 60U @@ -2373,9 +2374,7 @@ static netdev_features_t hns3_features_check(struct sk_buff *skb, * len of 480 bytes. */ if (len > HNS3_MAX_HDR_LEN) - features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); - - return features; + features[0] &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); }

static void hns3_nic_get_stats64(struct net_device *netdev, @@ -3127,27 +3126,28 @@ static void hns3_set_default_feature(struct net_device *netdev)

netdev->priv_flags |= IFF_UNICAST_FLT;

- netdev->hw_enc_features |= NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | + netdev->hw_enc_features[0] |= + NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | NETIF_F_SCTP_CRC | NETIF_F_TSO_MANGLEID | NETIF_F_FRAGLIST;

netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;

- netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | + netdev->features[0] |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | NETIF_F_SCTP_CRC | NETIF_F_FRAGLIST;

- netdev->vlan_features |= NETIF_F_RXCSUM | + netdev->vlan_features[0] |= NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | NETIF_F_SCTP_CRC | NETIF_F_FRAGLIST;

- netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | + netdev->hw_features[0] |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | @@ -3155,48 +3155,49 @@ static void hns3_set_default_feature(struct net_device *netdev) NETIF_F_SCTP_CRC | NETIF_F_FRAGLIST;

if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V2) { - netdev->hw_features |= NETIF_F_GRO_HW; - netdev->features |= NETIF_F_GRO_HW; + netdev->hw_features[0] |= NETIF_F_GRO_HW; + netdev->features[0] |= NETIF_F_GRO_HW;

if (!(h->flags & HNAE3_SUPPORT_VF)) { - netdev->hw_features |= NETIF_F_NTUPLE; - netdev->features |= NETIF_F_NTUPLE; + netdev->hw_features[0] |= NETIF_F_NTUPLE; + netdev->features[0] |= NETIF_F_NTUPLE; } }

if (test_bit(HNAE3_DEV_SUPPORT_UDP_GSO_B, ae_dev->caps)) { - netdev->hw_features |= NETIF_F_GSO_UDP_L4; - netdev->features |= NETIF_F_GSO_UDP_L4; - netdev->vlan_features |= NETIF_F_GSO_UDP_L4; - netdev->hw_enc_features |= NETIF_F_GSO_UDP_L4; + netdev->hw_features[0] |= NETIF_F_GSO_UDP_L4; + netdev->features[0] |= NETIF_F_GSO_UDP_L4; + netdev->vlan_features[0] |= NETIF_F_GSO_UDP_L4; + netdev->hw_enc_features[0] |= NETIF_F_GSO_UDP_L4; }

if (test_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps)) { - netdev->hw_features |= NETIF_F_HW_CSUM; - netdev->features |= NETIF_F_HW_CSUM; - netdev->vlan_features |= NETIF_F_HW_CSUM; - netdev->hw_enc_features |= NETIF_F_HW_CSUM; + netdev->hw_features[0] |= NETIF_F_HW_CSUM; + netdev->features[0] |= NETIF_F_HW_CSUM; + netdev->vlan_features[0] |= NETIF_F_HW_CSUM; + netdev->hw_enc_features[0] |= NETIF_F_HW_CSUM; } else { - netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; - netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; - netdev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; - netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + netdev->hw_features[0] |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + netdev->features[0] |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + netdev->vlan_features[0] |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + netdev->hw_enc_features[0] |= + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; }

if (test_bit(HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B, ae_dev->caps)) { - netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; - netdev->features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; - netdev->vlan_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; - netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; + netdev->hw_features[0] |= NETIF_F_GSO_UDP_TUNNEL_CSUM; + netdev->features[0] |= NETIF_F_GSO_UDP_TUNNEL_CSUM; + netdev->vlan_features[0] |= NETIF_F_GSO_UDP_TUNNEL_CSUM; + netdev->hw_enc_features[0] |= NETIF_F_GSO_UDP_TUNNEL_CSUM; }

if (test_bit(HNAE3_DEV_SUPPORT_FD_FORWARD_TC_B, ae_dev->caps)) { - netdev->hw_features |= NETIF_F_HW_TC; - netdev->features |= NETIF_F_HW_TC; + netdev->hw_features[0] |= NETIF_F_HW_TC; + netdev->features[0] |= NETIF_F_HW_TC; }

if (test_bit(HNAE3_DEV_SUPPORT_VLAN_FLTR_MDF_B, ae_dev->caps)) - netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; + netdev->hw_features[0] |= NETIF_F_HW_VLAN_CTAG_FILTER; }

static int hns3_alloc_buffer(struct hns3_enet_ring *ring, @@ -3727,7 +3728,7 @@ static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,

skb_checksum_none_assert(skb);

- if (!(netdev->features & NETIF_F_RXCSUM)) + if (!(netdev->features[0] & NETIF_F_RXCSUM)) return;

if (test_bit(HNS3_NIC_STATE_RXD_ADV_LAYOUT_ENABLE, &priv->state)) @@ -4024,7 +4025,7 @@ static int hns3_handle_bdinfo(struct hns3_enet_ring *ring, struct sk_buff *skb) * ot_vlan_tag in two layer tag case, and stored at vlan_tag * in one layer tag case. */ - if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) { + if (netdev->features[0] & NETIF_F_HW_VLAN_CTAG_RX) { u16 vlan_tag;

if (hns3_parse_vlan_tag(ring, desc, l234info, &vlan_tag)) diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c index 405ee4d..b193ee4 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_main.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c @@ -79,8 +79,8 @@ MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)"); static int change_mac_addr(struct net_device *netdev, const u8 *addr);

static int set_features(struct hinic_dev *nic_dev, - netdev_features_t pre_features, - netdev_features_t features, bool force_change); + netdev_features_t *pre_features, + netdev_features_t *features, bool force_change);

static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq) { @@ -880,7 +880,7 @@ static void hinic_get_stats64(struct net_device *netdev, }

static int hinic_set_features(struct net_device *netdev, - netdev_features_t features) + netdev_features_t *features) { struct hinic_dev *nic_dev = netdev_priv(netdev);

@@ -888,18 +888,16 @@ static int hinic_set_features(struct net_device *netdev, features, false); }

-static netdev_features_t hinic_fix_features(struct net_device *netdev, - netdev_features_t features) +static void hinic_fix_features(struct net_device *netdev, + netdev_features_t features) { struct hinic_dev *nic_dev = netdev_priv(netdev);

/* If Rx checksum is disabled, then LRO should also be disabled */ - if (!(features & NETIF_F_RXCSUM)) { + if (!(features[0] & NETIF_F_RXCSUM)) { netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n"); - features &= ~NETIF_F_LRO; + features[0] &= ~NETIF_F_LRO; } - - return features; }

static const struct net_device_ops hinic_netdev_ops = { @@ -943,19 +941,22 @@ static const struct net_device_ops hinicvf_netdev_ops = {

static void netdev_features_init(struct net_device *netdev) { - netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | - NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_RXCSUM | NETIF_F_LRO | - NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | - NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM; - - netdev->vlan_features = netdev->hw_features; - - netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; - - netdev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SCTP_CRC | - NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN | - NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_UDP_TUNNEL; + netdev->hw_features[0] = + NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | + NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_RXCSUM | NETIF_F_LRO | + NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM; + + netdev_features_copy(netdev->vlan_features, netdev->hw_features); + + netdev->features[0] = + netdev->hw_features[0] | NETIF_F_HW_VLAN_CTAG_FILTER; + + netdev->hw_enc_features[0] = + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SCTP_CRC | + NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN | + NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_UDP_TUNNEL; }

static void hinic_refresh_nic_cfg(struct hinic_dev *nic_dev) @@ -1072,21 +1073,22 @@ static void link_err_event(void *handle, }

static int set_features(struct hinic_dev *nic_dev, - netdev_features_t pre_features, - netdev_features_t features, bool force_change) + netdev_features_t *pre_features, + netdev_features_t *features, bool force_change) { - netdev_features_t changed = force_change ? ~0 : pre_features ^ features; + netdev_features_t failed_features[NETDEV_FEATURE_DWORDS] = {0}; u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN; - netdev_features_t failed_features = 0; + netdev_features_t changed; int ret = 0; int err = 0;

+ changed = force_change ? ~0 : pre_features[0] ^ features[0]; if (changed & NETIF_F_TSO) { - ret = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ? + ret = hinic_port_set_tso(nic_dev, (features[0] & NETIF_F_TSO) ? HINIC_TSO_ENABLE : HINIC_TSO_DISABLE); if (ret) { err = ret; - failed_features |= NETIF_F_TSO; + failed_features[0] |= NETIF_F_TSO; } }

@@ -1094,33 +1096,34 @@ static int set_features(struct hinic_dev *nic_dev, ret = hinic_set_rx_csum_offload(nic_dev, csum_en); if (ret) { err = ret; - failed_features |= NETIF_F_RXCSUM; + failed_features[0] |= NETIF_F_RXCSUM; } }

if (changed & NETIF_F_LRO) { ret = hinic_set_rx_lro_state(nic_dev, - !!(features & NETIF_F_LRO), + !!(features[0] & NETIF_F_LRO), HINIC_LRO_RX_TIMER_DEFAULT, HINIC_LRO_MAX_WQE_NUM_DEFAULT); if (ret) { err = ret; - failed_features |= NETIF_F_LRO; + failed_features[0] |= NETIF_F_LRO; } }

if (changed & NETIF_F_HW_VLAN_CTAG_RX) { ret = hinic_set_rx_vlan_offload(nic_dev, - !!(features & + !!(features[0] & NETIF_F_HW_VLAN_CTAG_RX)); if (ret) { err = ret; - failed_features |= NETIF_F_HW_VLAN_CTAG_RX; + failed_features[0] |= NETIF_F_HW_VLAN_CTAG_RX; } }

if (err) { - nic_dev->netdev->features = features ^ failed_features; + netdev_features_xor(nic_dev->netdev->features, features, + failed_features) return -EIO; }

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.c b/drivers/net/ethernet/huawei/hinic/hinic_rx.c index fed3b6b..452a91b 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_rx.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.c @@ -106,7 +106,7 @@ static void rx_csum(struct hinic_rxq *rxq, u32 status,

csum_err = HINIC_RQ_CQE_STATUS_GET(status, CSUM_ERR);

- if (!(netdev->features & NETIF_F_RXCSUM)) + if (!(netdev->features[0] & NETIF_F_RXCSUM)) return;

if (!csum_err) { @@ -411,7 +411,7 @@ static int rxq_recv(struct hinic_rxq *rxq, int budget)

offload_type = be32_to_cpu(cqe->offload_type); vlan_len = be32_to_cpu(cqe->len); - if ((netdev->features & NETIF_F_HW_VLAN_CTAG_RX) && + if ((netdev->features[0] & NETIF_F_HW_VLAN_CTAG_RX) && HINIC_GET_RX_VLAN_OFFLOAD_EN(offload_type)) { vid = HINIC_GET_RX_VLAN_TAG(vlan_len); __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 41a5183..4173464 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -563,7 +563,7 @@ static inline int __vlan_hwaccel_get_tag(const struct sk_buff *skb, */ static inline int vlan_get_tag(const struct sk_buff *skb, u16 *vlan_tci) { - if (skb->dev->features & NETIF_F_HW_VLAN_CTAG_TX) { + if (skb->dev->features[0] & NETIF_F_HW_VLAN_CTAG_TX) { return __vlan_hwaccel_get_tag(skb, vlan_tci); } else { return __vlan_get_tag(skb, vlan_tci); diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 2c6b9e4..9184963 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -102,7 +102,8 @@ enum { };

/* copy'n'paste compression ;) */ -#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit)) +#define __NETIF_F_BIT(bit) ((netdev_features_t)1 << (bit & 0x3F)) + #define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)

#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC) @@ -169,6 +170,8 @@ enum { #define NETIF_F_HW_HSR_FWD __NETIF_F(HW_HSR_FWD) #define NETIF_F_HW_HSR_DUP __NETIF_F(HW_HSR_DUP)

+#define NETDEV_FEATURE_DWORDS DIV_ROUND_UP(NETDEV_FEATURE_COUNT, 64) + /* Finds the next feature with the highest number of the range of start till 0. */ static inline int find_next_netdev_feature(u64 feature, unsigned long start) @@ -185,8 +188,7 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start) * mask_addr should be a u64 and bit an int */ #define for_each_netdev_feature(mask_addr, bit) \ - for ((bit) = find_next_netdev_feature((mask_addr), \ - NETDEV_FEATURE_COUNT); \ + for ((bit) = find_next_netdev_feature((mask_addr), 64); \ (bit) >= 0; \ (bit) = find_next_netdev_feature((mask_addr), (bit) - 1))

@@ -195,11 +197,6 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start) #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)

-/* remember that ((t)1 << t_BITS) is undefined in C99 */ -#define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ - (__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) - 1)) & \ - ~NETIF_F_NEVER_CHANGE) - /* Segmentation offload feature mask */ #define NETIF_F_GSO_MASK (__NETIF_F_BIT(NETIF_F_GSO_LAST + 1) - \ __NETIF_F_BIT(NETIF_F_GSO_SHIFT)) @@ -261,4 +258,96 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start) NETIF_F_GSO_UDP_TUNNEL | \ NETIF_F_GSO_UDP_TUNNEL_CSUM)

+static inline void netdev_features_copy(netdev_features_t *dst, + const netdev_features_t *src) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + dst[i] = src[i]; +} + +static inline void netdev_features_and(netdev_features_t *dst, + const netdev_features_t *a, + const netdev_features_t *b) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + dst[i] = a[i] & b[i]; +} + +static inline void netdev_features_andnot(netdev_features_t *dst, + const netdev_features_t *a, + const netdev_features_t *b) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + dst[i] = a[i] & ~b[i]; +} + +static inline void netdev_features_or(netdev_features_t *dst, + const netdev_features_t *a, + const netdev_features_t *b) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + dst[i] = a[i] | b[i]; +} + +static inline void netdev_features_xor(netdev_features_t *dst, + const netdev_features_t *a, + const netdev_features_t *b) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + dst[i] = a[i] ^ b[i]; +} + +static inline void netdev_features_set(netdev_features_t *dst, + unsigned int bit) +{ + dst[bit / 64] |= __NETIF_F_BIT(bit); +} + +static inline bool netdev_features_equal(const netdev_features_t *a, + const netdev_features_t *b) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + if (a[i] != b[i]) + return false; + + return true; +} + +static inline void netdev_features_empty(netdev_features_t *src) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + if (src[i]) + return false; + + return true; +} + +static inline void netdev_features_ethtool_bits(netdev_features_t *dst) +{ + unsigned int i; + + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) { + if (NETDEV_FEATURE_COUNT >= (i + 1) * 64) + dst[i] = GENMASK_ULL(63, 0); + else + dst[i] = GENMASK_ULL(NETDEV_FEATURE_COUNT - i * 64, + 0); + } + dst[0] &= ~NETIF_F_NEVER_CHANGE; +} + #endif /* _LINUX_NETDEV_FEATURES_H */ diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index eaf5bb0..4a29487 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1347,9 +1347,9 @@ struct net_device_ops { int (*ndo_stop)(struct net_device *dev); netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev); - netdev_features_t (*ndo_features_check)(struct sk_buff *skb, + void (*ndo_features_check)(struct sk_buff *skb, struct net_device *dev, - netdev_features_t features); + netdev_features_t *features); u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev); @@ -1467,10 +1467,10 @@ struct net_device_ops { bool all_slaves); struct net_device* (*ndo_sk_get_lower_dev)(struct net_device *dev, struct sock *sk); - netdev_features_t (*ndo_fix_features)(struct net_device *dev, - netdev_features_t features); + void (*ndo_fix_features)(struct net_device *dev, + netdev_features_t *features); int (*ndo_set_features)(struct net_device *dev, - netdev_features_t features); + netdev_features_t *features); int (*ndo_neigh_construct)(struct net_device *dev, struct neighbour *n); void (*ndo_neigh_destroy)(struct net_device *dev, @@ -1978,12 +1978,12 @@ struct net_device { unsigned short needed_headroom; unsigned short needed_tailroom;

- netdev_features_t features; - netdev_features_t hw_features; - netdev_features_t wanted_features; - netdev_features_t vlan_features; - netdev_features_t hw_enc_features; - netdev_features_t mpls_features; + netdev_features_t features[NETDEV_FEATURE_DWORDS]; + netdev_features_t hw_features[NETDEV_FEATURE_DWORDS]; + netdev_features_t wanted_features[NETDEV_FEATURE_DWORDS]; + netdev_features_t vlan_features[NETDEV_FEATURE_DWORDS]; + netdev_features_t hw_enc_features[NETDEV_FEATURE_DWORDS]; + netdev_features_t mpls_features[NETDEV_FEATURE_DWORDS]; netdev_features_t gso_partial_features;

unsigned int min_mtu; @@ -4986,10 +4986,11 @@ static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, return f1 & f2; }

-static inline netdev_features_t netdev_get_wanted_features( - struct net_device *dev) +static inline void netdev_get_wanted_features(struct net_device *dev, + netdev_features_t *wanted) { - return (dev->features & ~dev->hw_features) | dev->wanted_features; + netdev_features_andnot(wanted, dev->features, dev->hw_features); + netdev_features_or(wanted, wanted, dev->wanted_features); } netdev_features_t netdev_increment_features(netdev_features_t all, netdev_features_t one, netdev_features_t mask); @@ -5014,7 +5015,7 @@ void netif_stacked_transfer_operstate(const struct net_device *rootdev, netdev_features_t passthru_features_check(struct sk_buff *skb, struct net_device *dev, netdev_features_t features); -netdev_features_t netif_skb_features(struct sk_buff *skb); +void netif_skb_features(struct sk_buff *skb, netdev_features_t *features);

static inline bool net_gso_ok(netdev_features_t features, int gso_type) { diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 4cdf841..7d77692 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -328,7 +328,7 @@ static void vlan_transfer_features(struct net_device *dev, vlandev->gso_max_size = dev->gso_max_size; vlandev->gso_max_segs = dev->gso_max_segs;

- if (vlan_hw_offload_capable(dev->features, vlan->vlan_proto)) + if (vlan_hw_offload_capable(dev->features[0], vlan->vlan_proto)) vlandev->hard_header_len = dev->hard_header_len; else vlandev->hard_header_len = dev->hard_header_len + VLAN_HLEN; @@ -339,7 +339,7 @@ static void vlan_transfer_features(struct net_device *dev,

vlandev->priv_flags &= ~IFF_XMIT_DST_RELEASE; vlandev->priv_flags |= (vlan->real_dev->priv_flags & IFF_XMIT_DST_RELEASE); - vlandev->hw_enc_features = vlan_tnl_features(vlan->real_dev); + vlandev->hw_enc_features[0] = vlan_tnl_features(vlan->real_dev);

netdev_update_features(vlandev); } diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index 1a705a4..4e784a1 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -107,7 +107,7 @@ static inline netdev_features_t vlan_tnl_features(struct net_device *real_dev) { netdev_features_t ret;

- ret = real_dev->hw_enc_features & + ret = real_dev->hw_enc_features[0] & (NETIF_F_CSUM_MASK | NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ENCAP_ALL);

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index a0367b3..6d49761 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -566,21 +566,21 @@ static int vlan_dev_init(struct net_device *dev) if (vlan->flags & VLAN_FLAG_BRIDGE_BINDING) dev->state |= (1 << __LINK_STATE_NOCARRIER);

- dev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | - NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | - NETIF_F_GSO_ENCAP_ALL | - NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | - NETIF_F_ALL_FCOE; + dev->hw_features[0] = NETIF_F_HW_CSUM | NETIF_F_SG | + NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | + NETIF_F_GSO_ENCAP_ALL | + NETIF_F_HIGHDMA | NETIF_F_SCTP_CRC | + NETIF_F_ALL_FCOE;

- dev->features |= dev->hw_features | NETIF_F_LLTX; + dev->features[0] |= dev->hw_features[0] | NETIF_F_LLTX; dev->gso_max_size = real_dev->gso_max_size; dev->gso_max_segs = real_dev->gso_max_segs; - if (dev->features & NETIF_F_VLAN_FEATURES) + if (dev->features[0] & NETIF_F_VLAN_FEATURES) netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");

- dev->vlan_features = real_dev->vlan_features & ~NETIF_F_ALL_FCOE; - dev->hw_enc_features = vlan_tnl_features(real_dev); - dev->mpls_features = real_dev->mpls_features; + dev->vlan_features[0] = real_dev->vlan_features[0] & ~NETIF_F_ALL_FCOE; + dev->hw_enc_features[0] = vlan_tnl_features(real_dev); + netdev_features_copy(dev->mpls_features, real_dev->mpls_features);

/* ipv6 shared card related stuff */ dev->dev_id = real_dev->dev_id; @@ -633,27 +633,30 @@ void vlan_dev_uninit(struct net_device *dev) } }

-static netdev_features_t vlan_dev_fix_features(struct net_device *dev, - netdev_features_t features) +static void vlan_dev_fix_features(struct net_device *dev, + netdev_features_t *features) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; - netdev_features_t old_features = features; - netdev_features_t lower_features; + netdev_features_t lower_features[NETDEV_FEATURE_DWORDS]; + netdev_features_t old_features[NETDEV_FEATURE_DWORDS];

- lower_features = netdev_intersect_features((real_dev->vlan_features | - NETIF_F_RXCSUM), - real_dev->features); + netdev_features_copy(lower_features, features); + + lower_features[0] = + netdev_intersect_features((real_dev->vlan_features[0] | + NETIF_F_RXCSUM), + real_dev->features[0]);

/* Add HW_CSUM setting to preserve user ability to control * checksum offload on the vlan device. */ - if (lower_features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)) - lower_features |= NETIF_F_HW_CSUM; - features = netdev_intersect_features(features, lower_features); - features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); - features |= NETIF_F_LLTX; + if (lower_features[0] & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)) + lower_features[0] |= NETIF_F_HW_CSUM;

- return features; + features[0] = netdev_intersect_features(features[0], lower_features[0]); + features[0] |= old_features[0] & + (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE); + features[0] |= NETIF_F_LLTX; }

static int vlan_ethtool_get_link_ksettings(struct net_device *dev, diff --git a/net/core/dev.c b/net/core/dev.c index c253c2a..7066bf3 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1765,7 +1765,7 @@ void dev_disable_lro(struct net_device *dev) dev->wanted_features &= ~NETIF_F_LRO; netdev_update_features(dev);

- if (unlikely(dev->features & NETIF_F_LRO)) + if (unlikely(dev->features[0] & NETIF_F_LRO)) netdev_WARN(dev, "failed to disable LRO!\n");

netdev_for_each_lower_dev(dev, lower_dev, iter) @@ -1786,7 +1786,7 @@ static void dev_disable_gro_hw(struct net_device *dev) dev->wanted_features &= ~NETIF_F_GRO_HW; netdev_update_features(dev);

- if (unlikely(dev->features & NETIF_F_GRO_HW)) + if (unlikely(dev->features[0] & NETIF_F_GRO_HW)) netdev_WARN(dev, "failed to disable GRO_HW!\n"); }

@@ -3276,7 +3276,7 @@ static void skb_warn_bad_offload(const struct sk_buff *skb) } skb_dump(KERN_WARNING, skb, false); WARN(1, "%s: caps=(%pNF, %pNF)\n", - name, dev ? &dev->features : &null_features, + name, dev ? &dev->features[0] : &null_features, skb->sk ? &skb->sk->sk_route_caps : &null_features); }

@@ -3463,7 +3463,8 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb, netdev_features_t partial_features = NETIF_F_GSO_ROBUST; struct net_device *dev = skb->dev;

- partial_features |= dev->features & dev->gso_partial_features; + partial_features |= + dev->features[0] & dev->gso_partial_features; if (!skb_gso_ok(skb, features | partial_features)) features &= ~NETIF_F_GSO_PARTIAL; } @@ -3508,7 +3509,7 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb) #ifdef CONFIG_HIGHMEM int i;

- if (!(dev->features & NETIF_F_HIGHDMA)) { + if (!(dev->features[0] & NETIF_F_HIGHDMA)) { for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { skb_frag_t *frag = &skb_shinfo(skb)->frags[i];

@@ -3612,34 +3613,33 @@ static netdev_features_t gso_features_check(const struct sk_buff *skb, return features; }

-netdev_features_t netif_skb_features(struct sk_buff *skb) +void netif_skb_features(struct sk_buff *skb, netdev_features_t *features) { struct net_device *dev = skb->dev; - netdev_features_t features = dev->features;

+ netdev_features_copy(features, dev->features); if (skb_is_gso(skb)) - features = gso_features_check(skb, dev, features); + features[0] = gso_features_check(skb, dev, features[0]);

/* If encapsulation offload request, verify we are testing * hardware encapsulation features instead of standard * features for the netdev */ if (skb->encapsulation) - features &= dev->hw_enc_features; + netdev_features_and(features, dev->hw_enc_features);

if (skb_vlan_tagged(skb)) - features = netdev_intersect_features(features, - dev->vlan_features | - NETIF_F_HW_VLAN_CTAG_TX | - NETIF_F_HW_VLAN_STAG_TX); + features[0] = netdev_intersect_features(features[0], + dev->vlan_features[0] | + NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_STAG_TX);

if (dev->netdev_ops->ndo_features_check) - features &= dev->netdev_ops->ndo_features_check(skb, dev, - features); + dev->netdev_ops->ndo_features_check(skb, dev, features); else - features &= dflt_features_check(skb, dev, features); + features[0] &= dflt_features_check(skb, dev, features[0]);

- return harmonize_features(skb, features); + features[0] = harmonize_features(skb, features[0]); } EXPORT_SYMBOL(netif_skb_features);

@@ -3722,10 +3722,10 @@ EXPORT_SYMBOL(skb_csum_hwoffload_help);

static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev, bool *again) { - netdev_features_t features; + netdev_features_t features[NETDEV_FEATURE_DWORDS];

- features = netif_skb_features(skb); - skb = validate_xmit_vlan(skb, features); + netif_skb_features(skb, features); + skb = validate_xmit_vlan(skb, features[0]); if (unlikely(!skb)) goto out_null;

@@ -3733,10 +3733,10 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device if (unlikely(!skb)) goto out_null;

- if (netif_needs_gso(skb, features)) { + if (netif_needs_gso(skb, features[0])) { struct sk_buff *segs;

- segs = skb_gso_segment(skb, features); + segs = skb_gso_segment(skb, features[0]); if (IS_ERR(segs)) { goto out_kfree_skb; } else if (segs) { @@ -3744,7 +3744,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device skb = segs; } } else { - if (skb_needs_linearize(skb, features) && + if (skb_needs_linearize(skb, features[0]) && __skb_linearize(skb)) goto out_kfree_skb;

@@ -3759,12 +3759,12 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device else skb_set_transport_header(skb, skb_checksum_start_offset(skb)); - if (skb_csum_hwoffload_help(skb, features)) + if (skb_csum_hwoffload_help(skb, features[0])) goto out_kfree_skb; } }

- skb = validate_xmit_xfrm(skb, features, again); + skb = validate_xmit_xfrm(skb, features[0], again);

return skb;

@@ -4429,7 +4429,7 @@ set_rps_cpu(struct net_device *dev, struct sk_buff *skb,

/* Should we steer this flow to a different hardware queue? */ if (!skb_rx_queue_recorded(skb) || !dev->rx_cpu_rmap || - !(dev->features & NETIF_F_NTUPLE)) + !(dev->features[0] & NETIF_F_NTUPLE)) goto out; rxq_index = cpu_rmap_lookup_index(dev->rx_cpu_rmap, next_cpu); if (rxq_index == skb_get_rx_queue(skb)) @@ -9799,171 +9799,179 @@ static void net_set_todo(struct net_device *dev) dev_net(dev)->dev_unreg_count++; }

-static netdev_features_t netdev_sync_upper_features(struct net_device *lower, - struct net_device *upper, netdev_features_t features) +static void netdev_sync_upper_features(struct net_device *lower, + struct net_device *upper, + netdev_features_t *features) { netdev_features_t upper_disables = NETIF_F_UPPER_DISABLES; netdev_features_t feature; int feature_bit; + unsigned int i;

- for_each_netdev_feature(upper_disables, feature_bit) { - feature = __NETIF_F_BIT(feature_bit); - if (!(upper->wanted_features & feature) - && (features & feature)) { - netdev_dbg(lower, "Dropping feature %pNF, upper dev %s has it off.\n", - &feature, upper->name); - features &= ~feature; + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) { + for_each_netdev_feature(upper_disables, feature_bit) { + feature = __NETIF_F_BIT(feature_bit); + if (!(upper->wanted_features[i] & feature) && + (features[i] & feature)) { + netdev_dbg(lower, "Dropping feature[%u] %pNF, upper dev %s has it off.\n", + i, &feature, upper->name); + features[i] &= ~feature; + } } } - - return features; }

static void netdev_sync_lower_features(struct net_device *upper, - struct net_device *lower, netdev_features_t features) + struct net_device *lower, netdev_features_t *features) { netdev_features_t upper_disables = NETIF_F_UPPER_DISABLES; netdev_features_t feature; int feature_bit; + unsigned int i;

- for_each_netdev_feature(upper_disables, feature_bit) { - feature = __NETIF_F_BIT(feature_bit); - if (!(features & feature) && (lower->features & feature)) { - netdev_dbg(upper, "Disabling feature %pNF on lower dev %s.\n", - &feature, lower->name); - lower->wanted_features &= ~feature; - __netdev_update_features(lower); - - if (unlikely(lower->features & feature)) - netdev_WARN(upper, "failed to disable %pNF on %s!\n", - &feature, lower->name); - else - netdev_features_change(lower); + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) { + for_each_netdev_feature(upper_disables, feature_bit) { + feature = __NETIF_F_BIT(feature_bit); + if (!(features[i] & feature) && + (lower->features[i] & feature)) { + netdev_dbg(upper, "Disabling feature[%u] %pNF on lower dev %s.\n", + i, &feature, lower->name); + lower->wanted_features[i] &= ~feature[i]; + __netdev_update_features(lower); + + if (unlikely(lower->features[i] & feature)) + netdev_WARN(upper, "failed to disable feature[%u] %pNF on %s!\n", + i, &feature, lower->name); + else + netdev_features_change(lower); + } } } }

-static netdev_features_t netdev_fix_features(struct net_device *dev, - netdev_features_t features) +static void netdev_fix_features(struct net_device *dev, + netdev_features_t *features) { /* Fix illegal checksum combinations */ - if ((features & NETIF_F_HW_CSUM) && - (features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) { + if ((features[0] & NETIF_F_HW_CSUM) && + (features[0] & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) { netdev_warn(dev, "mixed HW and IP checksum settings.\n"); - features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM); + features[0] &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); }

/* TSO requires that SG is present as well. */ - if ((features & NETIF_F_ALL_TSO) && !(features & NETIF_F_SG)) { + if ((features[0] & NETIF_F_ALL_TSO) && !(features[0] & NETIF_F_SG)) { netdev_dbg(dev, "Dropping TSO features since no SG feature.\n"); - features &= ~NETIF_F_ALL_TSO; + features[0] &= ~NETIF_F_ALL_TSO; }

- if ((features & NETIF_F_TSO) && !(features & NETIF_F_HW_CSUM) && - !(features & NETIF_F_IP_CSUM)) { + if ((features[0] & NETIF_F_TSO) && !(features[0] & NETIF_F_HW_CSUM) && + !(features[0] & NETIF_F_IP_CSUM)) { netdev_dbg(dev, "Dropping TSO features since no CSUM feature.\n"); - features &= ~NETIF_F_TSO; - features &= ~NETIF_F_TSO_ECN; + features[0] &= ~NETIF_F_TSO; + features[0] &= ~NETIF_F_TSO_ECN; }

- if ((features & NETIF_F_TSO6) && !(features & NETIF_F_HW_CSUM) && - !(features & NETIF_F_IPV6_CSUM)) { + if ((features[0] & NETIF_F_TSO6) && !(features[0] & NETIF_F_HW_CSUM) && + !(features[0] & NETIF_F_IPV6_CSUM)) { netdev_dbg(dev, "Dropping TSO6 features since no CSUM feature.\n"); - features &= ~NETIF_F_TSO6; + features[0] &= ~NETIF_F_TSO6; }

/* TSO with IPv4 ID mangling requires IPv4 TSO be enabled */ - if ((features & NETIF_F_TSO_MANGLEID) && !(features & NETIF_F_TSO)) - features &= ~NETIF_F_TSO_MANGLEID; + if ((features[0] & NETIF_F_TSO_MANGLEID) && + !(features[0] & NETIF_F_TSO)) + features[0] &= ~NETIF_F_TSO_MANGLEID;

/* TSO ECN requires that TSO is present as well. */ - if ((features & NETIF_F_ALL_TSO) == NETIF_F_TSO_ECN) - features &= ~NETIF_F_TSO_ECN; + if ((features[0] & NETIF_F_ALL_TSO) == NETIF_F_TSO_ECN) + features[0] &= ~NETIF_F_TSO_ECN;

/* Software GSO depends on SG. */ - if ((features & NETIF_F_GSO) && !(features & NETIF_F_SG)) { + if ((features[0] & NETIF_F_GSO) && !(features[0] & NETIF_F_SG)) { netdev_dbg(dev, "Dropping NETIF_F_GSO since no SG feature.\n"); - features &= ~NETIF_F_GSO; + features[0] &= ~NETIF_F_GSO; }

/* GSO partial features require GSO partial be set */ - if ((features & dev->gso_partial_features) && - !(features & NETIF_F_GSO_PARTIAL)) { + if ((features[0] & dev->gso_partial_features) && + !(features[0] & NETIF_F_GSO_PARTIAL)) { netdev_dbg(dev, "Dropping partially supported GSO features since no GSO partial.\n"); - features &= ~dev->gso_partial_features; + features[0] &= ~dev->gso_partial_features; }

- if (!(features & NETIF_F_RXCSUM)) { + if (!(features[0] & NETIF_F_RXCSUM)) { /* NETIF_F_GRO_HW implies doing RXCSUM since every packet * successfully merged by hardware must also have the * checksum verified by hardware. If the user does not * want to enable RXCSUM, logically, we should disable GRO_HW. */ - if (features & NETIF_F_GRO_HW) { + if (features[0] & NETIF_F_GRO_HW) { netdev_dbg(dev, "Dropping NETIF_F_GRO_HW since no RXCSUM feature.\n"); - features &= ~NETIF_F_GRO_HW; + features[0] &= ~NETIF_F_GRO_HW; } }

/* LRO/HW-GRO features cannot be combined with RX-FCS */ - if (features & NETIF_F_RXFCS) { - if (features & NETIF_F_LRO) { + if (features[0] & NETIF_F_RXFCS) { + if (features[0] & NETIF_F_LRO) { netdev_dbg(dev, "Dropping LRO feature since RX-FCS is requested.\n"); - features &= ~NETIF_F_LRO; + features[0] &= ~NETIF_F_LRO; }

- if (features & NETIF_F_GRO_HW) { + if (features[0] & NETIF_F_GRO_HW) { netdev_dbg(dev, "Dropping HW-GRO feature since RX-FCS is requested.\n"); - features &= ~NETIF_F_GRO_HW; + features[0] &= ~NETIF_F_GRO_HW; } }

- if (features & NETIF_F_HW_TLS_TX) { - bool ip_csum = (features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)) == + if (features[0] & NETIF_F_HW_TLS_TX) { + bool ip_csum = (features[0] & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)) == (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); - bool hw_csum = features & NETIF_F_HW_CSUM; + bool hw_csum = features[0] & NETIF_F_HW_CSUM;

if (!ip_csum && !hw_csum) { netdev_dbg(dev, "Dropping TLS TX HW offload feature since no CSUM feature.\n"); - features &= ~NETIF_F_HW_TLS_TX; + features[0] &= ~NETIF_F_HW_TLS_TX; } }

- if ((features & NETIF_F_HW_TLS_RX) && !(features & NETIF_F_RXCSUM)) { + if ((features[0] & NETIF_F_HW_TLS_RX) && + !(features[0] & NETIF_F_RXCSUM)) { netdev_dbg(dev, "Dropping TLS RX HW offload feature since no RXCSUM feature.\n"); - features &= ~NETIF_F_HW_TLS_RX; + features[0] &= ~NETIF_F_HW_TLS_RX; } - - return features; }

int __netdev_update_features(struct net_device *dev) { + netdev_features_t features[NETDEV_FEATURE_DWORDS]; struct net_device *upper, *lower; - netdev_features_t features; struct list_head *iter; + unsigned int i; int err = -1;

ASSERT_RTNL();

- features = netdev_get_wanted_features(dev); + netdev_get_wanted_features(dev, features);

if (dev->netdev_ops->ndo_fix_features) - features = dev->netdev_ops->ndo_fix_features(dev, features); + dev->netdev_ops->ndo_fix_features(dev, features);

/* driver might be less strict about feature dependencies */ - features = netdev_fix_features(dev, features); + netdev_fix_features(dev, features);

/* some features can't be enabled if they're off on an upper device */ netdev_for_each_upper_dev_rcu(dev, upper, iter) - features = netdev_sync_upper_features(dev, upper, features); + netdev_sync_upper_features(dev, upper, features);

- if (dev->features == features) + if (netdev_features_equal(dev->features, features)) goto sync_lower;

- netdev_dbg(dev, "Features changed: %pNF -> %pNF\n", - &dev->features, &features); + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + netdev_dbg(dev, "Features[%u] changed: %pNF -> %pNF\n", + i, &dev->features[i], &features[i]);

if (dev->netdev_ops->ndo_set_features) err = dev->netdev_ops->ndo_set_features(dev, features); @@ -9971,9 +9979,10 @@ int __netdev_update_features(struct net_device *dev) err = 0;

if (unlikely(err < 0)) { - netdev_err(dev, - "set_features() failed (%d); wanted %pNF, left %pNF\n", - err, &features, &dev->features); + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + netdev_err(dev, + "set_features() failed (%d); wanted[%u] %pNF, left[%u] %pNF\n", + err, i, &features[i], i, &dev->features[i]); /* return non-0 since some features might have changed and * it's better to fire a spurious notification than miss it */ @@ -9988,9 +9997,10 @@ int __netdev_update_features(struct net_device *dev) netdev_sync_lower_features(dev, lower, features);

if (!err) { - netdev_features_t diff = features ^ dev->features; + netdev_features_t diff[NETDEV_FEATURE_DWORDS];

- if (diff & NETIF_F_RX_UDP_TUNNEL_PORT) { + netdev_features_xor(diff, features, dev->features); + if (diff[0] & NETIF_F_RX_UDP_TUNNEL_PORT) { /* udp_tunnel_{get,drop}_rx_info both need * NETIF_F_RX_UDP_TUNNEL_PORT enabled on the * device, or they won't do anything. @@ -9998,33 +10008,33 @@ int __netdev_update_features(struct net_device *dev) * *before* calling udp_tunnel_get_rx_info, * but *after* calling udp_tunnel_drop_rx_info. */ - if (features & NETIF_F_RX_UDP_TUNNEL_PORT) { - dev->features = features; + if (features[0] & NETIF_F_RX_UDP_TUNNEL_PORT) { + dev->features[0] = features[0]; udp_tunnel_get_rx_info(dev); } else { udp_tunnel_drop_rx_info(dev); } }

- if (diff & NETIF_F_HW_VLAN_CTAG_FILTER) { - if (features & NETIF_F_HW_VLAN_CTAG_FILTER) { - dev->features = features; + if (diff[0] & NETIF_F_HW_VLAN_CTAG_FILTER) { + if (features[0] & NETIF_F_HW_VLAN_CTAG_FILTER) { + dev->features[0] = features[0]; err |= vlan_get_rx_ctag_filter_info(dev); } else { vlan_drop_rx_ctag_filter_info(dev); } }

- if (diff & NETIF_F_HW_VLAN_STAG_FILTER) { + if (diff[0] & NETIF_F_HW_VLAN_STAG_FILTER) { if (features & NETIF_F_HW_VLAN_STAG_FILTER) { - dev->features = features; + dev->features[0] = features[0]; err |= vlan_get_rx_stag_filter_info(dev); } else { vlan_drop_rx_stag_filter_info(dev); } }

- dev->features = features; + netdev_features_copy(dev->features, features); }

return err < 0 ? 0 : 1; @@ -10213,7 +10223,7 @@ int register_netdevice(struct net_device *dev) int ret; struct net *net = dev_net(dev);

- BUILD_BUG_ON(sizeof(netdev_features_t) * BITS_PER_BYTE < + BUILD_BUG_ON(sizeof(dev->features) * BITS_PER_BYTE < NETDEV_FEATURE_COUNT); BUG_ON(dev_boot_phase); ASSERT_RTNL(); @@ -10250,7 +10260,7 @@ int register_netdevice(struct net_device *dev) } }

- if (((dev->hw_features | dev->features) & + if (((dev->hw_features[0] | dev->features[0]) & NETIF_F_HW_VLAN_CTAG_FILTER) && (!dev->netdev_ops->ndo_vlan_rx_add_vid || !dev->netdev_ops->ndo_vlan_rx_kill_vid)) { @@ -10268,44 +10278,46 @@ int register_netdevice(struct net_device *dev) /* Transfer changeable features to wanted_features and enable * software offloads (GSO and GRO). */ - dev->hw_features |= (NETIF_F_SOFT_FEATURES | NETIF_F_SOFT_FEATURES_OFF); - dev->features |= NETIF_F_SOFT_FEATURES; + dev->hw_features[0] |= + (NETIF_F_SOFT_FEATURES | NETIF_F_SOFT_FEATURES_OFF); + dev->features[0] |= NETIF_F_SOFT_FEATURES;

if (dev->udp_tunnel_nic_info) { - dev->features |= NETIF_F_RX_UDP_TUNNEL_PORT; - dev->hw_features |= NETIF_F_RX_UDP_TUNNEL_PORT; + dev->features[0] |= NETIF_F_RX_UDP_TUNNEL_PORT; + dev->hw_features[0] |= NETIF_F_RX_UDP_TUNNEL_PORT; }

- dev->wanted_features = dev->features & dev->hw_features; + netdev_features_and(dev->wanted_features, dev->features, + dev->hw_features);

if (!(dev->flags & IFF_LOOPBACK)) - dev->hw_features |= NETIF_F_NOCACHE_COPY; + dev->hw_features[0] |= NETIF_F_NOCACHE_COPY;

/* If IPv4 TCP segmentation offload is supported we should also * allow the device to enable segmenting the frame with the option * of ignoring a static IP ID value. This doesn't enable the * feature itself but allows the user to enable it later. */ - if (dev->hw_features & NETIF_F_TSO) - dev->hw_features |= NETIF_F_TSO_MANGLEID; - if (dev->vlan_features & NETIF_F_TSO) - dev->vlan_features |= NETIF_F_TSO_MANGLEID; - if (dev->mpls_features & NETIF_F_TSO) - dev->mpls_features |= NETIF_F_TSO_MANGLEID; - if (dev->hw_enc_features & NETIF_F_TSO) - dev->hw_enc_features |= NETIF_F_TSO_MANGLEID; + if (dev->hw_features[0] & NETIF_F_TSO) + dev->hw_features[0] |= NETIF_F_TSO_MANGLEID; + if (dev->vlan_features[0] & NETIF_F_TSO) + dev->vlan_features[0] |= NETIF_F_TSO_MANGLEID; + if (dev->mpls_features[0] & NETIF_F_TSO) + dev->mpls_features[0] |= NETIF_F_TSO_MANGLEID; + if (dev->hw_enc_features[0] & NETIF_F_TSO) + dev->hw_enc_features[0] |= NETIF_F_TSO_MANGLEID;

/* Make NETIF_F_HIGHDMA inheritable to VLAN devices. */ - dev->vlan_features |= NETIF_F_HIGHDMA; + dev->vlan_features[0] |= NETIF_F_HIGHDMA;

/* Make NETIF_F_SG inheritable to tunnel devices. */ - dev->hw_enc_features |= NETIF_F_SG | NETIF_F_GSO_PARTIAL; + dev->hw_enc_features[0] |= NETIF_F_SG | NETIF_F_GSO_PARTIAL;

/* Make NETIF_F_SG inheritable to MPLS. */ - dev->mpls_features |= NETIF_F_SG; + dev->mpls_features[0] |= NETIF_F_SG;

ret = call_netdevice_notifiers(NETDEV_POST_INIT, dev); ret = notifier_to_errno(ret); @@ -11146,7 +11158,7 @@ int __dev_change_net_namespace(struct net_device *dev, struct net *net,

/* Don't allow namespace local devices to be moved. */ err = -EINVAL; - if (dev->features & NETIF_F_NETNS_LOCAL) + if (dev->features[0] & NETIF_F_NETNS_LOCAL) goto out;

/* Ensure the device has been registrered */ @@ -11506,7 +11518,7 @@ static void __net_exit default_device_exit(struct net *net) char fb_name[IFNAMSIZ];

/* Ignore unmoveable devices (i.e. loopback) */ - if (dev->features & NETIF_F_NETNS_LOCAL) + if (dev->features[0] & NETIF_F_NETNS_LOCAL) continue;

/* Leave virtual devices for the generic cleanup */ diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 0a6b047..2c0adf4 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -74,13 +74,13 @@ static netdev_tx_t netpoll_start_xmit(struct sk_buff *skb, struct net_device *dev, struct netdev_queue *txq) { + netdev_features_t features[NETDEV_FEATURE_DWORDS]; netdev_tx_t status = NETDEV_TX_OK; - netdev_features_t features;

- features = netif_skb_features(skb); + netif_skb_features(skb, features);

if (skb_vlan_tag_present(skb) && - !vlan_hw_offload_capable(features, skb->vlan_proto)) { + !vlan_hw_offload_capable(features[0], skb->vlan_proto)) { skb = __vlan_hwaccel_push_inside(skb); if (unlikely(!skb)) { /* This is actually a packet drop, but we diff --git a/net/ethtool/features.c b/net/ethtool/features.c index 1c9f4df..0eedb17 100644 --- a/net/ethtool/features.c +++ b/net/ethtool/features.c @@ -25,12 +25,13 @@ const struct nla_policy ethnl_features_get_policy[] = { NLA_POLICY_NESTED(ethnl_header_policy), };

-static void ethnl_features_to_bitmap32(u32 *dest, netdev_features_t src) +static void ethnl_features_to_bitmap32(u32 *dest, netdev_features_t *src) { + u32 *__src = (u32 *)src; unsigned int i;

for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; i++) - dest[i] = src >> (32 * i); + dest[i] = __src[i]; }

static int features_prepare_data(const struct ethnl_req_info *req_base, @@ -38,15 +39,23 @@ static int features_prepare_data(const struct ethnl_req_info *req_base, struct genl_info *info) { struct features_reply_data *data = FEATURES_REPDATA(reply_base); + netdev_features_t features[NETDEV_FEATURE_DWORDS] = {0}; struct net_device *dev = reply_base->dev; - netdev_features_t all_features; + unsigned int i;

ethnl_features_to_bitmap32(data->hw, dev->hw_features); ethnl_features_to_bitmap32(data->wanted, dev->wanted_features); ethnl_features_to_bitmap32(data->active, dev->features); - ethnl_features_to_bitmap32(data->nochange, NETIF_F_NEVER_CHANGE); - all_features = GENMASK_ULL(NETDEV_FEATURE_COUNT - 1, 0); - ethnl_features_to_bitmap32(data->all, all_features); + features[0] = NETIF_F_NEVER_CHANGE; + ethnl_features_to_bitmap32(data->nochange, features); + for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) { + if (NETDEV_FEATURE_COUNT >= (i + 1) * 64) + features[i] = GENMASK_ULL(63, 0); + else + features[i] = GENMASK_ULL(NETDEV_FEATURE_COUNT - i * 64, + 0); + } + ethnl_features_to_bitmap32(data->all, features);

return 0; } @@ -131,27 +140,29 @@ const struct nla_policy ethnl_features_set_policy[] = { [ETHTOOL_A_FEATURES_WANTED] = { .type = NLA_NESTED }, };

-static void ethnl_features_to_bitmap(unsigned long *dest, netdev_features_t val) +static void ethnl_features_to_bitmap(unsigned long *dest, + netdev_features_t *val) { const unsigned int words = BITS_TO_LONGS(NETDEV_FEATURE_COUNT); unsigned int i;

bitmap_zero(dest, NETDEV_FEATURE_COUNT); for (i = 0; i < words; i++) - dest[i] = (unsigned long)(val >> (i * BITS_PER_LONG)); + dest[i] = + (unsigned long)(val[i / 2] >> (i % 2 * BITS_PER_LONG)); }

-static netdev_features_t ethnl_bitmap_to_features(unsigned long *src) +static void ethnl_bitmap_to_features(netdev_features_t *val, unsigned long *src) { - const unsigned int nft_bits = sizeof(netdev_features_t) * BITS_PER_BYTE; const unsigned int words = BITS_TO_LONGS(NETDEV_FEATURE_COUNT); - netdev_features_t ret = 0; unsigned int i;

+ for (i = 0; i < NETDEV_FEATURE_DWORDS; i++) + val[i] = 0; + for (i = 0; i < words; i++) - ret |= (netdev_features_t)(src[i]) << (i * BITS_PER_LONG); - ret &= ~(netdev_features_t)0 >> (nft_bits - NETDEV_FEATURE_COUNT); - return ret; + val[i / 2] |= + (netdev_features_t)(src[i]) << (i % 2 * BITS_PER_LONG); }

static int features_send_reply(struct net_device *dev, struct genl_info *info, @@ -212,12 +223,14 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info) { DECLARE_BITMAP(wanted_diff_mask, NETDEV_FEATURE_COUNT); DECLARE_BITMAP(active_diff_mask, NETDEV_FEATURE_COUNT); + netdev_features_t features[NETDEV_FEATURE_DWORDS]; DECLARE_BITMAP(old_active, NETDEV_FEATURE_COUNT); DECLARE_BITMAP(old_wanted, NETDEV_FEATURE_COUNT); DECLARE_BITMAP(new_active, NETDEV_FEATURE_COUNT); DECLARE_BITMAP(new_wanted, NETDEV_FEATURE_COUNT); DECLARE_BITMAP(req_wanted, NETDEV_FEATURE_COUNT); DECLARE_BITMAP(req_mask, NETDEV_FEATURE_COUNT); + netdev_features_t tmp[NETDEV_FEATURE_DWORDS]; struct ethnl_req_info req_info = {}; struct nlattr **tb = info->attrs; struct net_device *dev; @@ -242,7 +255,11 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info) netdev_features_strings, info->extack); if (ret < 0) goto out_rtnl; - if (ethnl_bitmap_to_features(req_mask) & ~NETIF_F_ETHTOOL_BITS) { + + ethnl_bitmap_to_features(features, req_mask); + netdev_features_ethtool_bits(tmp); + netdev_features_andnot(features, features, tmp); + if (!netdev_features_empty(features)) { GENL_SET_ERR_MSG(info, "attempt to change non-ethtool features"); ret = -EINVAL; goto out_rtnl; @@ -253,8 +270,13 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info) bitmap_andnot(new_wanted, old_wanted, req_mask, NETDEV_FEATURE_COUNT); bitmap_or(req_wanted, new_wanted, req_wanted, NETDEV_FEATURE_COUNT); if (!bitmap_equal(req_wanted, old_wanted, NETDEV_FEATURE_COUNT)) { - dev->wanted_features &= ~dev->hw_features; - dev->wanted_features |= ethnl_bitmap_to_features(req_wanted) & dev->hw_features; + netdev_features_andnot(dev->wanted_features, + dev->wanted_features, + dev->hw_features); + ethnl_bitmap_to_features(features, req_wanted); + netdev_features_and(features, features, dev->hw_features); + netdev_features_or(dev->wanted_features, dev->wanted_features, + features); __netdev_update_features(dev); } ethnl_features_to_bitmap(new_active, dev->features); diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index baa5d10..f213ec9 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -67,12 +67,15 @@ static int ethtool_get_features(struct net_device *dev, void __user *useraddr) int i;

/* in case feature bits run out again */ - BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); + BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(dev->features));

for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { - features[i].available = (u32)(dev->hw_features >> (32 * i)); - features[i].requested = (u32)(dev->wanted_features >> (32 * i)); - features[i].active = (u32)(dev->features >> (32 * i)); + features[i].available = + (u32)(dev->hw_features[i / 2] >> (i % 2 * 32)); + features[i].requested = + (u32)(dev->wanted_features[i / 2] >> (i % 2 * 32)); + features[i].active = + (u32)(dev->features[i / 2] >> (i % 2 * 32)); features[i].never_changed = (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); } @@ -97,7 +100,9 @@ static int ethtool_set_features(struct net_device *dev, void __user *useraddr) { struct ethtool_sfeatures cmd; struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; - netdev_features_t wanted = 0, valid = 0; + netdev_features_t wanted[NETDEV_FEATURE_DWORDS] = {0}; + netdev_features_t valid[NETDEV_FEATURE_DWORDS] = {0}; + netdev_features_t tmp[NETDEV_FEATURE_DWORDS]; int i, ret = 0;

if (copy_from_user(&cmd, useraddr, sizeof(cmd))) @@ -111,23 +116,33 @@ static int ethtool_set_features(struct net_device *dev, void __user *useraddr) return -EFAULT;

for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { - valid |= (netdev_features_t)features[i].valid << (32 * i); - wanted |= (netdev_features_t)features[i].requested << (32 * i); + valid[i / 2] |= + (netdev_features_t)features[i].valid << (32 * i); + wanted[i / 2] |= + (netdev_features_t)features[i].requested << (32 * i); }

- if (valid & ~NETIF_F_ETHTOOL_BITS) + netdev_features_ethtool_bits(tmp); + netdev_features_andnot(tmp, features, tmp); + if (!netdev_features_empty(tmp)) return -EINVAL;

- if (valid & ~dev->hw_features) { - valid &= dev->hw_features; + netdev_features_andnot(tmp, valid, dev->hw_features); + + if (!netdev_features_empty(tmp)) { + netdev_features_and(valid, valid, dev->hw_features); ret |= ETHTOOL_F_UNSUPPORTED; }

- dev->wanted_features &= ~valid; - dev->wanted_features |= wanted & valid; + netdev_features_andnot(dev->wanted_features, dev->wanted_features, + valid); + netdev_features_and(wanted, wanted, valid); + netdev_features_or(dev->wanted_features, dev->wanted_features, wanted); __netdev_update_features(dev);

- if ((dev->wanted_features ^ dev->features) & valid) + netdev_features_xor(tmp, dev->wanted_features, dev->features); + netdev_features_and(tmp, tmp, valid); + if (!netdev_features_empty(tmp)) ret |= ETHTOOL_F_WISH;

return ret; @@ -227,7 +242,7 @@ static int ethtool_get_one_feature(struct net_device *dev, netdev_features_t mask = ethtool_get_feature_mask(ethcmd); struct ethtool_value edata = { .cmd = ethcmd, - .data = !!(dev->features & mask), + .data = !!(dev->features[0] & mask), };

if (copy_to_user(useraddr, &edata, sizeof(edata))) @@ -238,21 +253,23 @@ static int ethtool_get_one_feature(struct net_device *dev, static int ethtool_set_one_feature(struct net_device *dev, void __user *useraddr, u32 ethcmd) { + netdev_features_t mask[NETDEV_FEATURE_DWORDS] = {0}; struct ethtool_value edata; - netdev_features_t mask;

if (copy_from_user(&edata, useraddr, sizeof(edata))) return -EFAULT;

- mask = ethtool_get_feature_mask(ethcmd); - mask &= dev->hw_features; - if (!mask) + mask[0] = ethtool_get_feature_mask(ethcmd); + netdev_features_and(mask, mask, dev->hw_features); + if (netdev_features_empty(mask)) return -EOPNOTSUPP;

if (edata.data) - dev->wanted_features |= mask; + netdev_features_or(dev->wanted_features, dev->wanted_features, + mask) else - dev->wanted_features &= ~mask; + netdev_features_andnot(dev->wanted_features, + dev->wanted_features, mask);

__netdev_update_features(dev);

@@ -285,29 +302,37 @@ static u32 __ethtool_get_flags(struct net_device *dev)

static int __ethtool_set_flags(struct net_device *dev, u32 data) { - netdev_features_t features = 0, changed; + netdev_features_t features[NETDEV_FEATURE_DWORDS] = {0}; + netdev_features_t changed[NETDEV_FEATURE_DWORDS]; + netdev_features_t tmp[NETDEV_FEATURE_DWORDS];

if (data & ~ETH_ALL_FLAGS) return -EINVAL;

if (data & ETH_FLAG_LRO) - features |= NETIF_F_LRO; + features[0] |= NETIF_F_LRO; if (data & ETH_FLAG_RXVLAN) - features |= NETIF_F_HW_VLAN_CTAG_RX; + features[0] |= NETIF_F_HW_VLAN_CTAG_RX; if (data & ETH_FLAG_TXVLAN) - features |= NETIF_F_HW_VLAN_CTAG_TX; + features[0] |= NETIF_F_HW_VLAN_CTAG_TX; if (data & ETH_FLAG_NTUPLE) - features |= NETIF_F_NTUPLE; + features[0] |= NETIF_F_NTUPLE; if (data & ETH_FLAG_RXHASH) - features |= NETIF_F_RXHASH; + features[0] |= NETIF_F_RXHASH;

/* allow changing only bits set in hw_features */ - changed = (features ^ dev->features) & ETH_ALL_FEATURES; - if (changed & ~dev->hw_features) - return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; + netdev_features_xor(changed, features, dev->features); + changed[0] &= ETH_ALL_FEATURES; + + netdev_features_andnot(tmp, changed, dev->hw_features); + if (!netdev_features_empty(tmp)) { + netdev_features_and(tmp, changed, dev->hw_features); + return (!netdev_features_empty(tmp)) ? -EINVAL : -EOPNOTSUPP; + }

- dev->wanted_features = - (dev->wanted_features & ~changed) | (features & changed); + netdev_features_andnot(tmp, dev->wanted_features, changed); + netdev_features_and(features, features, changed); + netdev_features_or(dev->wanted_features, tmp, features);

__netdev_update_features(dev);

@@ -2587,7 +2612,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) void __user *useraddr = ifr->ifr_data; u32 ethcmd, sub_cmd; int rc; - netdev_features_t old_features; + netdev_features_t old_features[NETDEV_FEATURE_DWORDS];

if (!dev || !netif_device_present(dev)) return -ENODEV; @@ -2650,7 +2675,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) if (rc < 0) return rc; } - old_features = dev->features; + netdev_features_copy(old_features, dev->features);

switch (ethcmd) { case ETHTOOL_GSET: @@ -2865,7 +2890,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) if (dev->ethtool_ops->complete) dev->ethtool_ops->complete(dev);

- if (old_features != dev->features) + if (!netdev_features_equal(old_features, dev->features)) netdev_features_change(dev);

return rc;