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net: hns3: Add STRP_TAGP field support for hardware revision 0x21

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Hardware Revision(0x21) Buffer Descriptor adds a field STRP_TAGP
for vlan stripped processed indication. STRP_TAGP field has 2 bits,
bit 0 is stripped indication of the vlan tag in outer vlan tag
field, bit 1 is stripped indication of the vlan tag in inner vlan
tag field. For each bit, 0 indicates the tag is not stripped and
1 indicates the tag is stripped.

This patch adds STRP_TAGP support for revision(0x21), and does not
change the revision(0x20) action.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peng Li 2018-05-25 19:42:58 +01:00 committed by David S. Miller
parent dcb35ccef8
commit 5b5455a9ed
2 changed files with 40 additions and 5 deletions
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42
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
View File

@ -2066,6 +2066,39 @@ static void hns3_rx_skb(struct hns3_enet_ring *ring, struct sk_buff *skb)
napi_gro_receive(&ring->tqp_vector->napi, skb);
}
static u16 hns3_parse_vlan_tag(struct hns3_enet_ring *ring,
struct hns3_desc *desc, u32 l234info)
{
struct pci_dev *pdev = ring->tqp->handle->pdev;
u16 vlan_tag;
if (pdev->revision == 0x20) {
vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag);
if (!(vlan_tag & VLAN_VID_MASK))
vlan_tag = le16_to_cpu(desc->rx.vlan_tag);
return vlan_tag;
}
#define HNS3_STRP_OUTER_VLAN 0x1
#define HNS3_STRP_INNER_VLAN 0x2
switch (hnae_get_field(l234info, HNS3_RXD_STRP_TAGP_M,
HNS3_RXD_STRP_TAGP_S)) {
case HNS3_STRP_OUTER_VLAN:
vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag);
break;
case HNS3_STRP_INNER_VLAN:
vlan_tag = le16_to_cpu(desc->rx.vlan_tag);
break;
default:
vlan_tag = 0;
break;
}
return vlan_tag;
}
static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
struct sk_buff **out_skb, int *out_bnum)
{
@ -2155,6 +2188,9 @@ static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
}
*out_bnum = bnum;
l234info = le32_to_cpu(desc->rx.l234_info);
/* Based on hw strategy, the tag offloaded will be stored at
* ot_vlan_tag in two layer tag case, and stored at vlan_tag
* in one layer tag case.
@ -2162,17 +2198,13 @@ static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
u16 vlan_tag;
vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag);
if (!(vlan_tag & VLAN_VID_MASK))
vlan_tag = le16_to_cpu(desc->rx.vlan_tag);
vlan_tag = hns3_parse_vlan_tag(ring, desc, l234info);
if (vlan_tag & VLAN_VID_MASK)
__vlan_hwaccel_put_tag(skb,
htons(ETH_P_8021Q),
vlan_tag);
}
l234info = le32_to_cpu(desc->rx.l234_info);
if (unlikely(!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))) {
netdev_err(netdev, "no valid bd,%016llx,%016llx\n",
((u64 *)desc)[0], ((u64 *)desc)[1]);

3
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
View File

@ -104,6 +104,9 @@ enum hns3_nic_state {
#define HNS3_RXD_L4ID_S 8
#define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S)
#define HNS3_RXD_FRAG_B 12
#define HNS3_RXD_STRP_TAGP_S 13
#define HNS3_RXD_STRP_TAGP_M (0x3 << HNS3_RXD_STRP_TAGP_S)
#define HNS3_RXD_L2E_B 16
#define HNS3_RXD_L3E_B 17
#define HNS3_RXD_L4E_B 18