[PATCH net-next v7 0/8] Wangxun netdev features support

[PATCH net-next v7 0/8] Wangxun netdev features support

[Mengyuan Lou]

Implement tx_csum and rx_csum to support hardware checksum offload.
Implement ndo_vlan_rx_add_vid and ndo_vlan_rx_kill_vid.
Implement ndo_set_features.
Enable macros in netdev features which wangxun can support.

changes v7:
- Remove fragmented packets parsing.
- Jakub Kicinski:
https://lore.kernel.org/netdev/20230523210454.12963d67@kernel.org/
changes v6:
- Fix some code spelling errors.
changes v5:
- Add ndo_set_features support.
- Move wx_decode_ptype() and wx_ptype_lookup to C file.
- Remove wx_fwd_adapter.
changes v4:
- Yunsheng Lin:
https://lore.kernel.org/netdev/c4b9765d-7213-2718-5de3-5e8231753b95@huawei.com/
changes v3:
- Yunsheng Lin: Tidy up logic for wx_encode_tx_desc_ptype.
changes v2:
- Andrew Lunn:
Add ETH_P_CNM Congestion Notification Message to if_ether.h.
Remove lro support.
- Yunsheng Lin:
https://lore.kernel.org/netdev/eb75ae23-8c19-bbc5-e99a-9b853511affa@huawei.com/

Mengyuan Lou (8):
  net: wangxun: libwx add tx offload functions
  net: wangxun: libwx add rx offload functions
  net: wangxun: Implement vlan add and kill functions
  net: libwx: Implement xx_set_features ops
  net: ngbe: Add netdev features support
  net: ngbe: Implement vlan add and remove ops
  net: txgbe: Add netdev features support
  net: txgbe: Implement vlan add and remove ops

 drivers/net/ethernet/wangxun/libwx/wx_hw.c    | 272 ++++++-
 drivers/net/ethernet/wangxun/libwx/wx_hw.h    |   3 +
 drivers/net/ethernet/wangxun/libwx/wx_lib.c   | 734 +++++++++++++++++-
 drivers/net/ethernet/wangxun/libwx/wx_lib.h   |   1 +
 drivers/net/ethernet/wangxun/libwx/wx_type.h  | 214 ++++-
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c |  20 +-
 drivers/net/ethernet/wangxun/ngbe/ngbe_type.h |   1 +
 .../net/ethernet/wangxun/txgbe/txgbe_main.c   |  25 +-
 .../net/ethernet/wangxun/txgbe/txgbe_type.h   |   1 +
 9 files changed, 1250 insertions(+), 21 deletions(-)

-- 
2.40.1

[PATCH net-next v7 1/8] net: wangxun: libwx add tx offload functions

[Mengyuan Lou]

Add tx offload functions for wx_xmit_frame_ring which
includes wx_encode_tx_desc_ptype, wx_tso and wx_tx_csum.
which supports ngbe and txgbe to implement tx offload
function.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_lib.c  | 462 ++++++++++++++++++-
 drivers/net/ethernet/wangxun/libwx/wx_type.h |  87 +++-
 2 files changed, 541 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 1e8d8b7b0c62..34ac30e87b7c 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -2,9 +2,14 @@
 /* Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd. */
 
 #include <linux/etherdevice.h>
+#include <net/ip6_checksum.h>
 #include <net/page_pool.h>
+#include <net/inet_ecn.h>
 #include <linux/iopoll.h>
+#include <linux/sctp.h>
 #include <linux/pci.h>
+#include <net/tcp.h>
+#include <net/ip.h>
 
 #include "wx_type.h"
 #include "wx_lib.h"
@@ -707,11 +712,50 @@ static int wx_maybe_stop_tx(struct wx_ring *tx_ring, u16 size)
 	return 0;
 }
 
+static u32 wx_tx_cmd_type(u32 tx_flags)
+{
+	/* set type for advanced descriptor with frame checksum insertion */
+	u32 cmd_type = WX_TXD_DTYP_DATA | WX_TXD_IFCS;
+
+	/* set HW vlan bit if vlan is present */
+	cmd_type |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_HW_VLAN, WX_TXD_VLE);
+	/* set segmentation enable bits for TSO/FSO */
+	cmd_type |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_TSO, WX_TXD_TSE);
+	/* set timestamp bit if present */
+	cmd_type |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_TSTAMP, WX_TXD_MAC_TSTAMP);
+	cmd_type |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_LINKSEC, WX_TXD_LINKSEC);
+
+	return cmd_type;
+}
+
+static void wx_tx_olinfo_status(union wx_tx_desc *tx_desc,
+				u32 tx_flags, unsigned int paylen)
+{
+	u32 olinfo_status = paylen << WX_TXD_PAYLEN_SHIFT;
+
+	/* enable L4 checksum for TSO and TX checksum offload */
+	olinfo_status |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_CSUM, WX_TXD_L4CS);
+	/* enable IPv4 checksum for TSO */
+	olinfo_status |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_IPV4, WX_TXD_IIPCS);
+	/* enable outer IPv4 checksum for TSO */
+	olinfo_status |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_OUTER_IPV4,
+				     WX_TXD_EIPCS);
+	/* Check Context must be set if Tx switch is enabled, which it
+	 * always is for case where virtual functions are running
+	 */
+	olinfo_status |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_CC, WX_TXD_CC);
+	olinfo_status |= WX_SET_FLAG(tx_flags, WX_TX_FLAGS_IPSEC,
+				     WX_TXD_IPSEC);
+	tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
+}
+
 static void wx_tx_map(struct wx_ring *tx_ring,
-		      struct wx_tx_buffer *first)
+		      struct wx_tx_buffer *first,
+		      const u8 hdr_len)
 {
 	struct sk_buff *skb = first->skb;
 	struct wx_tx_buffer *tx_buffer;
+	u32 tx_flags = first->tx_flags;
 	u16 i = tx_ring->next_to_use;
 	unsigned int data_len, size;
 	union wx_tx_desc *tx_desc;
@@ -719,10 +763,9 @@ static void wx_tx_map(struct wx_ring *tx_ring,
 	dma_addr_t dma;
 	u32 cmd_type;
 
-	cmd_type = WX_TXD_DTYP_DATA | WX_TXD_IFCS;
+	cmd_type = wx_tx_cmd_type(tx_flags);
 	tx_desc = WX_TX_DESC(tx_ring, i);
-
-	tx_desc->read.olinfo_status = cpu_to_le32(skb->len << WX_TXD_PAYLEN_SHIFT);
+	wx_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len);
 
 	size = skb_headlen(skb);
 	data_len = skb->data_len;
@@ -838,12 +881,399 @@ static void wx_tx_map(struct wx_ring *tx_ring,
 	tx_ring->next_to_use = i;
 }
 
+static void wx_tx_ctxtdesc(struct wx_ring *tx_ring, u32 vlan_macip_lens,
+			   u32 fcoe_sof_eof, u32 type_tucmd, u32 mss_l4len_idx)
+{
+	struct wx_tx_context_desc *context_desc;
+	u16 i = tx_ring->next_to_use;
+
+	context_desc = WX_TX_CTXTDESC(tx_ring, i);
+	i++;
+	tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
+
+	/* set bits to identify this as an advanced context descriptor */
+	type_tucmd |= WX_TXD_DTYP_CTXT;
+	context_desc->vlan_macip_lens   = cpu_to_le32(vlan_macip_lens);
+	context_desc->seqnum_seed       = cpu_to_le32(fcoe_sof_eof);
+	context_desc->type_tucmd_mlhl   = cpu_to_le32(type_tucmd);
+	context_desc->mss_l4len_idx     = cpu_to_le32(mss_l4len_idx);
+}
+
+static void wx_get_ipv6_proto(struct sk_buff *skb, int offset, u8 *nexthdr)
+{
+	struct ipv6hdr *hdr = (struct ipv6hdr *)(skb->data + offset);
+
+	*nexthdr = hdr->nexthdr;
+	offset += sizeof(struct ipv6hdr);
+	while (ipv6_ext_hdr(*nexthdr)) {
+		struct ipv6_opt_hdr _hdr, *hp;
+
+		if (*nexthdr == NEXTHDR_NONE)
+			return;
+		hp = skb_header_pointer(skb, offset, sizeof(_hdr), &_hdr);
+		if (!hp)
+			return;
+		if (*nexthdr == NEXTHDR_FRAGMENT)
+			break;
+		*nexthdr = hp->nexthdr;
+	}
+}
+
+union network_header {
+	struct iphdr *ipv4;
+	struct ipv6hdr *ipv6;
+	void *raw;
+};
+
+static u8 wx_encode_tx_desc_ptype(const struct wx_tx_buffer *first)
+{
+	u8 tun_prot = 0, l4_prot = 0, ptype = 0;
+	struct sk_buff *skb = first->skb;
+
+	if (skb->encapsulation) {
+		union network_header hdr;
+
+		switch (first->protocol) {
+		case htons(ETH_P_IP):
+			tun_prot = ip_hdr(skb)->protocol;
+			ptype = WX_PTYPE_TUN_IPV4;
+			break;
+		case htons(ETH_P_IPV6):
+			wx_get_ipv6_proto(skb, skb_network_offset(skb), &tun_prot);
+			ptype = WX_PTYPE_TUN_IPV6;
+			break;
+		default:
+			return ptype;
+		}
+
+		if (tun_prot == IPPROTO_IPIP) {
+			hdr.raw = (void *)inner_ip_hdr(skb);
+			ptype |= WX_PTYPE_PKT_IPIP;
+		} else if (tun_prot == IPPROTO_UDP) {
+			hdr.raw = (void *)inner_ip_hdr(skb);
+			if (skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
+			    skb->inner_protocol != htons(ETH_P_TEB)) {
+				ptype |= WX_PTYPE_PKT_IG;
+			} else {
+				if (((struct ethhdr *)skb_inner_mac_header(skb))->h_proto
+				     == htons(ETH_P_8021Q))
+					ptype |= WX_PTYPE_PKT_IGMV;
+				else
+					ptype |= WX_PTYPE_PKT_IGM;
+			}
+
+		} else if (tun_prot == IPPROTO_GRE) {
+			hdr.raw = (void *)inner_ip_hdr(skb);
+			if (skb->inner_protocol ==  htons(ETH_P_IP) ||
+			    skb->inner_protocol ==  htons(ETH_P_IPV6)) {
+				ptype |= WX_PTYPE_PKT_IG;
+			} else {
+				if (((struct ethhdr *)skb_inner_mac_header(skb))->h_proto
+				    == htons(ETH_P_8021Q))
+					ptype |= WX_PTYPE_PKT_IGMV;
+				else
+					ptype |= WX_PTYPE_PKT_IGM;
+			}
+		} else {
+			return ptype;
+		}
+
+		switch (hdr.ipv4->version) {
+		case IPVERSION:
+			l4_prot = hdr.ipv4->protocol;
+			break;
+		case 6:
+			wx_get_ipv6_proto(skb, skb_inner_network_offset(skb), &l4_prot);
+			ptype |= WX_PTYPE_PKT_IPV6;
+			break;
+		default:
+			return ptype;
+		}
+	} else {
+		switch (first->protocol) {
+		case htons(ETH_P_IP):
+			l4_prot = ip_hdr(skb)->protocol;
+			ptype = WX_PTYPE_PKT_IP;
+			break;
+		case htons(ETH_P_IPV6):
+			wx_get_ipv6_proto(skb, skb_network_offset(skb), &l4_prot);
+			ptype = WX_PTYPE_PKT_IP | WX_PTYPE_PKT_IPV6;
+			break;
+		default:
+			return WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_MAC;
+		}
+	}
+	switch (l4_prot) {
+	case IPPROTO_TCP:
+		ptype |= WX_PTYPE_TYP_TCP;
+		break;
+	case IPPROTO_UDP:
+		ptype |= WX_PTYPE_TYP_UDP;
+		break;
+	case IPPROTO_SCTP:
+		ptype |= WX_PTYPE_TYP_SCTP;
+		break;
+	default:
+		ptype |= WX_PTYPE_TYP_IP;
+		break;
+	}
+
+	return ptype;
+}
+
+static int wx_tso(struct wx_ring *tx_ring, struct wx_tx_buffer *first,
+		  u8 *hdr_len, u8 ptype)
+{
+	u32 vlan_macip_lens, type_tucmd, mss_l4len_idx;
+	struct net_device *netdev = tx_ring->netdev;
+	u32 l4len, tunhdr_eiplen_tunlen = 0;
+	struct sk_buff *skb = first->skb;
+	bool enc = skb->encapsulation;
+	struct ipv6hdr *ipv6h;
+	struct tcphdr *tcph;
+	struct iphdr *iph;
+	u8 tun_prot = 0;
+	int err;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return 0;
+
+	if (!skb_is_gso(skb))
+		return 0;
+
+	err = skb_cow_head(skb, 0);
+	if (err < 0)
+		return err;
+
+	/* indicates the inner headers in the skbuff are valid. */
+	iph = enc ? inner_ip_hdr(skb) : ip_hdr(skb);
+	if (iph->version == 4) {
+		tcph = enc ? inner_tcp_hdr(skb) : tcp_hdr(skb);
+		iph->tot_len = 0;
+		iph->check = 0;
+		tcph->check = ~csum_tcpudp_magic(iph->saddr,
+						 iph->daddr, 0,
+						 IPPROTO_TCP, 0);
+		first->tx_flags |= WX_TX_FLAGS_TSO |
+				   WX_TX_FLAGS_CSUM |
+				   WX_TX_FLAGS_IPV4 |
+				   WX_TX_FLAGS_CC;
+	} else if (iph->version == 6 && skb_is_gso_v6(skb)) {
+		ipv6h = enc ? inner_ipv6_hdr(skb) : ipv6_hdr(skb);
+		tcph = enc ? inner_tcp_hdr(skb) : tcp_hdr(skb);
+		ipv6h->payload_len = 0;
+		tcph->check = ~csum_ipv6_magic(&ipv6h->saddr,
+					       &ipv6h->daddr, 0,
+					       IPPROTO_TCP, 0);
+		first->tx_flags |= WX_TX_FLAGS_TSO |
+				   WX_TX_FLAGS_CSUM |
+				   WX_TX_FLAGS_CC;
+	}
+
+	/* compute header lengths */
+	l4len = enc ? inner_tcp_hdrlen(skb) : tcp_hdrlen(skb);
+	*hdr_len = enc ? (skb_inner_transport_header(skb) - skb->data) :
+			 skb_transport_offset(skb);
+	*hdr_len += l4len;
+
+	/* update gso size and bytecount with header size */
+	first->gso_segs = skb_shinfo(skb)->gso_segs;
+	first->bytecount += (first->gso_segs - 1) * *hdr_len;
+
+	/* mss_l4len_id: use 0 as index for TSO */
+	mss_l4len_idx = l4len << WX_TXD_L4LEN_SHIFT;
+	mss_l4len_idx |= skb_shinfo(skb)->gso_size << WX_TXD_MSS_SHIFT;
+
+	/* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
+	if (enc) {
+		switch (first->protocol) {
+		case htons(ETH_P_IP):
+			tun_prot = ip_hdr(skb)->protocol;
+			first->tx_flags |= WX_TX_FLAGS_OUTER_IPV4;
+			break;
+		case htons(ETH_P_IPV6):
+			tun_prot = ipv6_hdr(skb)->nexthdr;
+			break;
+		default:
+			break;
+		}
+		switch (tun_prot) {
+		case IPPROTO_UDP:
+			tunhdr_eiplen_tunlen = WX_TXD_TUNNEL_UDP;
+			tunhdr_eiplen_tunlen |= ((skb_network_header_len(skb) >> 2) <<
+						 WX_TXD_OUTER_IPLEN_SHIFT) |
+						(((skb_inner_mac_header(skb) -
+						skb_transport_header(skb)) >> 1) <<
+						WX_TXD_TUNNEL_LEN_SHIFT);
+			break;
+		case IPPROTO_GRE:
+			tunhdr_eiplen_tunlen = WX_TXD_TUNNEL_GRE;
+			tunhdr_eiplen_tunlen |= ((skb_network_header_len(skb) >> 2) <<
+						 WX_TXD_OUTER_IPLEN_SHIFT) |
+						(((skb_inner_mac_header(skb) -
+						skb_transport_header(skb)) >> 1) <<
+						WX_TXD_TUNNEL_LEN_SHIFT);
+			break;
+		case IPPROTO_IPIP:
+			tunhdr_eiplen_tunlen = (((char *)inner_ip_hdr(skb) -
+						(char *)ip_hdr(skb)) >> 2) <<
+						WX_TXD_OUTER_IPLEN_SHIFT;
+			break;
+		default:
+			break;
+		}
+		vlan_macip_lens = skb_inner_network_header_len(skb) >> 1;
+	} else {
+		vlan_macip_lens = skb_network_header_len(skb) >> 1;
+	}
+
+	vlan_macip_lens |= skb_network_offset(skb) << WX_TXD_MACLEN_SHIFT;
+	vlan_macip_lens |= first->tx_flags & WX_TX_FLAGS_VLAN_MASK;
+
+	type_tucmd = ptype << 24;
+	if (skb->vlan_proto == htons(ETH_P_8021AD) &&
+	    netdev->features & NETIF_F_HW_VLAN_STAG_TX)
+		type_tucmd |= WX_SET_FLAG(first->tx_flags,
+					  WX_TX_FLAGS_HW_VLAN,
+					  0x1 << WX_TXD_TAG_TPID_SEL_SHIFT);
+	wx_tx_ctxtdesc(tx_ring, vlan_macip_lens, tunhdr_eiplen_tunlen,
+		       type_tucmd, mss_l4len_idx);
+
+	return 1;
+}
+
+static void wx_tx_csum(struct wx_ring *tx_ring, struct wx_tx_buffer *first,
+		       u8 ptype)
+{
+	u32 tunhdr_eiplen_tunlen = 0, vlan_macip_lens = 0;
+	struct net_device *netdev = tx_ring->netdev;
+	u32 mss_l4len_idx = 0, type_tucmd;
+	struct sk_buff *skb = first->skb;
+	u8 tun_prot = 0;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL) {
+		if (!(first->tx_flags & WX_TX_FLAGS_HW_VLAN) &&
+		    !(first->tx_flags & WX_TX_FLAGS_CC))
+			return;
+		vlan_macip_lens = skb_network_offset(skb) <<
+				  WX_TXD_MACLEN_SHIFT;
+	} else {
+		u8 l4_prot = 0;
+		union {
+			struct iphdr *ipv4;
+			struct ipv6hdr *ipv6;
+			u8 *raw;
+		} network_hdr;
+		union {
+			struct tcphdr *tcphdr;
+			u8 *raw;
+		} transport_hdr;
+
+		if (skb->encapsulation) {
+			network_hdr.raw = skb_inner_network_header(skb);
+			transport_hdr.raw = skb_inner_transport_header(skb);
+			vlan_macip_lens = skb_network_offset(skb) <<
+					  WX_TXD_MACLEN_SHIFT;
+			switch (first->protocol) {
+			case htons(ETH_P_IP):
+				tun_prot = ip_hdr(skb)->protocol;
+				break;
+			case htons(ETH_P_IPV6):
+				tun_prot = ipv6_hdr(skb)->nexthdr;
+				break;
+			default:
+				return;
+			}
+			switch (tun_prot) {
+			case IPPROTO_UDP:
+				tunhdr_eiplen_tunlen = WX_TXD_TUNNEL_UDP;
+				tunhdr_eiplen_tunlen |=
+					((skb_network_header_len(skb) >> 2) <<
+					WX_TXD_OUTER_IPLEN_SHIFT) |
+					(((skb_inner_mac_header(skb) -
+					skb_transport_header(skb)) >> 1) <<
+					WX_TXD_TUNNEL_LEN_SHIFT);
+				break;
+			case IPPROTO_GRE:
+				tunhdr_eiplen_tunlen = WX_TXD_TUNNEL_GRE;
+				tunhdr_eiplen_tunlen |= ((skb_network_header_len(skb) >> 2) <<
+							 WX_TXD_OUTER_IPLEN_SHIFT) |
+							 (((skb_inner_mac_header(skb) -
+							    skb_transport_header(skb)) >> 1) <<
+							  WX_TXD_TUNNEL_LEN_SHIFT);
+				break;
+			case IPPROTO_IPIP:
+				tunhdr_eiplen_tunlen = (((char *)inner_ip_hdr(skb) -
+							(char *)ip_hdr(skb)) >> 2) <<
+							WX_TXD_OUTER_IPLEN_SHIFT;
+				break;
+			default:
+				break;
+			}
+
+		} else {
+			network_hdr.raw = skb_network_header(skb);
+			transport_hdr.raw = skb_transport_header(skb);
+			vlan_macip_lens = skb_network_offset(skb) <<
+					  WX_TXD_MACLEN_SHIFT;
+		}
+
+		switch (network_hdr.ipv4->version) {
+		case IPVERSION:
+			vlan_macip_lens |= (transport_hdr.raw - network_hdr.raw) >> 1;
+			l4_prot = network_hdr.ipv4->protocol;
+			break;
+		case 6:
+			vlan_macip_lens |= (transport_hdr.raw - network_hdr.raw) >> 1;
+			l4_prot = network_hdr.ipv6->nexthdr;
+			break;
+		default:
+			break;
+		}
+
+		switch (l4_prot) {
+		case IPPROTO_TCP:
+		mss_l4len_idx = (transport_hdr.tcphdr->doff * 4) <<
+				WX_TXD_L4LEN_SHIFT;
+			break;
+		case IPPROTO_SCTP:
+			mss_l4len_idx = sizeof(struct sctphdr) <<
+					WX_TXD_L4LEN_SHIFT;
+			break;
+		case IPPROTO_UDP:
+			mss_l4len_idx = sizeof(struct udphdr) <<
+					WX_TXD_L4LEN_SHIFT;
+			break;
+		default:
+			break;
+		}
+
+		/* update TX checksum flag */
+		first->tx_flags |= WX_TX_FLAGS_CSUM;
+	}
+	first->tx_flags |= WX_TX_FLAGS_CC;
+	/* vlan_macip_lens: MACLEN, VLAN tag */
+	vlan_macip_lens |= first->tx_flags & WX_TX_FLAGS_VLAN_MASK;
+
+	type_tucmd = ptype << 24;
+	if (skb->vlan_proto == htons(ETH_P_8021AD) &&
+	    netdev->features & NETIF_F_HW_VLAN_STAG_TX)
+		type_tucmd |= WX_SET_FLAG(first->tx_flags,
+					  WX_TX_FLAGS_HW_VLAN,
+					  0x1 << WX_TXD_TAG_TPID_SEL_SHIFT);
+	wx_tx_ctxtdesc(tx_ring, vlan_macip_lens, tunhdr_eiplen_tunlen,
+		       type_tucmd, mss_l4len_idx);
+}
+
 static netdev_tx_t wx_xmit_frame_ring(struct sk_buff *skb,
 				      struct wx_ring *tx_ring)
 {
 	u16 count = TXD_USE_COUNT(skb_headlen(skb));
 	struct wx_tx_buffer *first;
+	u8 hdr_len = 0, ptype;
 	unsigned short f;
+	u32 tx_flags = 0;
+	int tso;
 
 	/* need: 1 descriptor per page * PAGE_SIZE/WX_MAX_DATA_PER_TXD,
 	 *       + 1 desc for skb_headlen/WX_MAX_DATA_PER_TXD,
@@ -864,7 +1294,29 @@ static netdev_tx_t wx_xmit_frame_ring(struct sk_buff *skb,
 	first->bytecount = skb->len;
 	first->gso_segs = 1;
 
-	wx_tx_map(tx_ring, first);
+	/* if we have a HW VLAN tag being added default to the HW one */
+	if (skb_vlan_tag_present(skb)) {
+		tx_flags |= skb_vlan_tag_get(skb) << WX_TX_FLAGS_VLAN_SHIFT;
+		tx_flags |= WX_TX_FLAGS_HW_VLAN;
+	}
+
+	/* record initial flags and protocol */
+	first->tx_flags = tx_flags;
+	first->protocol = vlan_get_protocol(skb);
+
+	ptype = wx_encode_tx_desc_ptype(first);
+
+	tso = wx_tso(tx_ring, first, &hdr_len, ptype);
+	if (tso < 0)
+		goto out_drop;
+	else if (!tso)
+		wx_tx_csum(tx_ring, first, ptype);
+	wx_tx_map(tx_ring, first, hdr_len);
+
+	return NETDEV_TX_OK;
+out_drop:
+	dev_kfree_skb_any(first->skb);
+	first->skb = NULL;
 
 	return NETDEV_TX_OK;
 }
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 32f952d93009..d2e0584e3b44 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -6,6 +6,7 @@
 
 #include <linux/bitfield.h>
 #include <linux/netdevice.h>
+#include <net/ip.h>
 
 #define WX_NCSI_SUP                             0x8000
 #define WX_NCSI_MASK                            0x8000
@@ -315,9 +316,6 @@
 #define TXD_USE_COUNT(S)     DIV_ROUND_UP((S), WX_MAX_DATA_PER_TXD)
 #define DESC_NEEDED          (MAX_SKB_FRAGS + 4)
 
-/* Ether Types */
-#define WX_ETH_P_CNM                 0x22E7
-
 #define WX_CFG_PORT_ST               0x14404
 
 /******************* Receive Descriptor bit definitions **********************/
@@ -326,6 +324,29 @@
 
 #define WX_RXD_ERR_RXE               BIT(29) /* Any MAC Error */
 
+/* TUN */
+#define WX_PTYPE_TUN_IPV4            0x80
+#define WX_PTYPE_TUN_IPV6            0xC0
+
+/* PKT for TUN */
+#define WX_PTYPE_PKT_IPIP            0x00 /* IP+IP */
+#define WX_PTYPE_PKT_IG              0x10 /* IP+GRE */
+#define WX_PTYPE_PKT_IGM             0x20 /* IP+GRE+MAC */
+#define WX_PTYPE_PKT_IGMV            0x30 /* IP+GRE+MAC+VLAN */
+/* PKT for !TUN */
+#define WX_PTYPE_PKT_MAC             0x10
+#define WX_PTYPE_PKT_IP              0x20
+
+/* TYP for PKT=mac */
+#define WX_PTYPE_TYP_MAC             0x01
+/* TYP for PKT=ip */
+#define WX_PTYPE_PKT_IPV6            0x08
+#define WX_PTYPE_TYP_IPFRAG          0x01
+#define WX_PTYPE_TYP_IP              0x02
+#define WX_PTYPE_TYP_UDP             0x03
+#define WX_PTYPE_TYP_TCP             0x04
+#define WX_PTYPE_TYP_SCTP            0x05
+
 /*********************** Transmit Descriptor Config Masks ****************/
 #define WX_TXD_STAT_DD               BIT(0)  /* Descriptor Done */
 #define WX_TXD_DTYP_DATA             0       /* Adv Data Descriptor */
@@ -334,6 +355,49 @@
 #define WX_TXD_IFCS                  BIT(25) /* Insert FCS */
 #define WX_TXD_RS                    BIT(27) /* Report Status */
 
+/*********************** Adv Transmit Descriptor Config Masks ****************/
+#define WX_TXD_MAC_TSTAMP            BIT(19) /* IEEE1588 time stamp */
+#define WX_TXD_DTYP_CTXT             BIT(20) /* Adv Context Desc */
+#define WX_TXD_LINKSEC               BIT(26) /* enable linksec */
+#define WX_TXD_VLE                   BIT(30) /* VLAN pkt enable */
+#define WX_TXD_TSE                   BIT(31) /* TCP Seg enable */
+#define WX_TXD_CC                    BIT(7) /* Check Context */
+#define WX_TXD_IPSEC                 BIT(8) /* enable ipsec esp */
+#define WX_TXD_L4CS                  BIT(9)
+#define WX_TXD_IIPCS                 BIT(10)
+#define WX_TXD_EIPCS                 BIT(11)
+#define WX_TXD_PAYLEN_SHIFT          13 /* Adv desc PAYLEN shift */
+#define WX_TXD_MACLEN_SHIFT          9  /* Adv ctxt desc mac len shift */
+#define WX_TXD_TAG_TPID_SEL_SHIFT    11
+
+#define WX_TXD_L4LEN_SHIFT           8  /* Adv ctxt L4LEN shift */
+#define WX_TXD_MSS_SHIFT             16  /* Adv ctxt MSS shift */
+
+#define WX_TXD_OUTER_IPLEN_SHIFT     12 /* Adv ctxt OUTERIPLEN shift */
+#define WX_TXD_TUNNEL_LEN_SHIFT      21 /* Adv ctxt TUNNELLEN shift */
+#define WX_TXD_TUNNEL_TYPE_SHIFT     11 /* Adv Tx Desc Tunnel Type shift */
+#define WX_TXD_TUNNEL_UDP            FIELD_PREP(BIT(WX_TXD_TUNNEL_TYPE_SHIFT), 0)
+#define WX_TXD_TUNNEL_GRE            FIELD_PREP(BIT(WX_TXD_TUNNEL_TYPE_SHIFT), 1)
+
+enum wx_tx_flags {
+	/* cmd_type flags */
+	WX_TX_FLAGS_HW_VLAN	= 0x01,
+	WX_TX_FLAGS_TSO		= 0x02,
+	WX_TX_FLAGS_TSTAMP	= 0x04,
+
+	/* olinfo flags */
+	WX_TX_FLAGS_CC		= 0x08,
+	WX_TX_FLAGS_IPV4	= 0x10,
+	WX_TX_FLAGS_CSUM	= 0x20,
+	WX_TX_FLAGS_OUTER_IPV4	= 0x100,
+	WX_TX_FLAGS_LINKSEC	= 0x200,
+	WX_TX_FLAGS_IPSEC	= 0x400,
+};
+
+/* VLAN info */
+#define WX_TX_FLAGS_VLAN_MASK			GENMASK(31, 16)
+#define WX_TX_FLAGS_VLAN_SHIFT			16
+
 /* Host Interface Command Structures */
 struct wx_hic_hdr {
 	u8 cmd;
@@ -508,10 +572,25 @@ union wx_rx_desc {
 	} wb;  /* writeback */
 };
 
+struct wx_tx_context_desc {
+	__le32 vlan_macip_lens;
+	__le32 seqnum_seed;
+	__le32 type_tucmd_mlhl;
+	__le32 mss_l4len_idx;
+};
+
+/* if _flag is in _input, return _result */
+#define WX_SET_FLAG(_input, _flag, _result) \
+	(((_flag) <= (_result)) ? \
+	 ((u32)((_input) & (_flag)) * ((_result) / (_flag))) : \
+	 ((u32)((_input) & (_flag)) / ((_flag) / (_result))))
+
 #define WX_RX_DESC(R, i)     \
 	(&(((union wx_rx_desc *)((R)->desc))[i]))
 #define WX_TX_DESC(R, i)     \
 	(&(((union wx_tx_desc *)((R)->desc))[i]))
+#define WX_TX_CTXTDESC(R, i) \
+	(&(((struct wx_tx_context_desc *)((R)->desc))[i]))
 
 /* wrapper around a pointer to a socket buffer,
  * so a DMA handle can be stored along with the buffer
@@ -523,6 +602,8 @@ struct wx_tx_buffer {
 	unsigned short gso_segs;
 	DEFINE_DMA_UNMAP_ADDR(dma);
 	DEFINE_DMA_UNMAP_LEN(len);
+	__be16 protocol;
+	u32 tx_flags;
 };
 
 struct wx_rx_buffer {
-- 
2.40.1

[PATCH net-next v7 2/8] net: wangxun: libwx add rx offload functions

[Mengyuan Lou]

Add rx offload functions for wx_clean_rx_irq
which supports ngbe and txgbe to implement
rx offload function.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_lib.c  | 234 ++++++++++++++++++-
 drivers/net/ethernet/wangxun/libwx/wx_type.h | 100 +++++++-
 2 files changed, 331 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 34ac30e87b7c..84107208401e 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -15,6 +15,144 @@
 #include "wx_lib.h"
 #include "wx_hw.h"
 
+/* Lookup table mapping the HW PTYPE to the bit field for decoding */
+static struct wx_dec_ptype wx_ptype_lookup[256] = {
+	/* L2: mac */
+	[0x11] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
+	[0x12] = WX_PTT(L2, NONE, NONE, NONE, TS,   PAY2),
+	[0x13] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
+	[0x14] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
+	[0x15] = WX_PTT(L2, NONE, NONE, NONE, NONE, NONE),
+	[0x16] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
+	[0x17] = WX_PTT(L2, NONE, NONE, NONE, NONE, NONE),
+
+	/* L2: ethertype filter */
+	[0x18 ... 0x1F] = WX_PTT(L2, NONE, NONE, NONE, NONE, NONE),
+
+	/* L3: ip non-tunnel */
+	[0x21] = WX_PTT(IP, FGV4, NONE, NONE, NONE, PAY3),
+	[0x22] = WX_PTT(IP, IPV4, NONE, NONE, NONE, PAY3),
+	[0x23] = WX_PTT(IP, IPV4, NONE, NONE, UDP,  PAY4),
+	[0x24] = WX_PTT(IP, IPV4, NONE, NONE, TCP,  PAY4),
+	[0x25] = WX_PTT(IP, IPV4, NONE, NONE, SCTP, PAY4),
+	[0x29] = WX_PTT(IP, FGV6, NONE, NONE, NONE, PAY3),
+	[0x2A] = WX_PTT(IP, IPV6, NONE, NONE, NONE, PAY3),
+	[0x2B] = WX_PTT(IP, IPV6, NONE, NONE, UDP,  PAY3),
+	[0x2C] = WX_PTT(IP, IPV6, NONE, NONE, TCP,  PAY4),
+	[0x2D] = WX_PTT(IP, IPV6, NONE, NONE, SCTP, PAY4),
+
+	/* L2: fcoe */
+	[0x30 ... 0x34] = WX_PTT(FCOE, NONE, NONE, NONE, NONE, PAY3),
+	[0x38 ... 0x3C] = WX_PTT(FCOE, NONE, NONE, NONE, NONE, PAY3),
+
+	/* IPv4 --> IPv4/IPv6 */
+	[0x81] = WX_PTT(IP, IPV4, IPIP, FGV4, NONE, PAY3),
+	[0x82] = WX_PTT(IP, IPV4, IPIP, IPV4, NONE, PAY3),
+	[0x83] = WX_PTT(IP, IPV4, IPIP, IPV4, UDP,  PAY4),
+	[0x84] = WX_PTT(IP, IPV4, IPIP, IPV4, TCP,  PAY4),
+	[0x85] = WX_PTT(IP, IPV4, IPIP, IPV4, SCTP, PAY4),
+	[0x89] = WX_PTT(IP, IPV4, IPIP, FGV6, NONE, PAY3),
+	[0x8A] = WX_PTT(IP, IPV4, IPIP, IPV6, NONE, PAY3),
+	[0x8B] = WX_PTT(IP, IPV4, IPIP, IPV6, UDP,  PAY4),
+	[0x8C] = WX_PTT(IP, IPV4, IPIP, IPV6, TCP,  PAY4),
+	[0x8D] = WX_PTT(IP, IPV4, IPIP, IPV6, SCTP, PAY4),
+
+	/* IPv4 --> GRE/NAT --> NONE/IPv4/IPv6 */
+	[0x90] = WX_PTT(IP, IPV4, IG, NONE, NONE, PAY3),
+	[0x91] = WX_PTT(IP, IPV4, IG, FGV4, NONE, PAY3),
+	[0x92] = WX_PTT(IP, IPV4, IG, IPV4, NONE, PAY3),
+	[0x93] = WX_PTT(IP, IPV4, IG, IPV4, UDP,  PAY4),
+	[0x94] = WX_PTT(IP, IPV4, IG, IPV4, TCP,  PAY4),
+	[0x95] = WX_PTT(IP, IPV4, IG, IPV4, SCTP, PAY4),
+	[0x99] = WX_PTT(IP, IPV4, IG, FGV6, NONE, PAY3),
+	[0x9A] = WX_PTT(IP, IPV4, IG, IPV6, NONE, PAY3),
+	[0x9B] = WX_PTT(IP, IPV4, IG, IPV6, UDP,  PAY4),
+	[0x9C] = WX_PTT(IP, IPV4, IG, IPV6, TCP,  PAY4),
+	[0x9D] = WX_PTT(IP, IPV4, IG, IPV6, SCTP, PAY4),
+
+	/* IPv4 --> GRE/NAT --> MAC --> NONE/IPv4/IPv6 */
+	[0xA0] = WX_PTT(IP, IPV4, IGM, NONE, NONE, PAY3),
+	[0xA1] = WX_PTT(IP, IPV4, IGM, FGV4, NONE, PAY3),
+	[0xA2] = WX_PTT(IP, IPV4, IGM, IPV4, NONE, PAY3),
+	[0xA3] = WX_PTT(IP, IPV4, IGM, IPV4, UDP,  PAY4),
+	[0xA4] = WX_PTT(IP, IPV4, IGM, IPV4, TCP,  PAY4),
+	[0xA5] = WX_PTT(IP, IPV4, IGM, IPV4, SCTP, PAY4),
+	[0xA9] = WX_PTT(IP, IPV4, IGM, FGV6, NONE, PAY3),
+	[0xAA] = WX_PTT(IP, IPV4, IGM, IPV6, NONE, PAY3),
+	[0xAB] = WX_PTT(IP, IPV4, IGM, IPV6, UDP,  PAY4),
+	[0xAC] = WX_PTT(IP, IPV4, IGM, IPV6, TCP,  PAY4),
+	[0xAD] = WX_PTT(IP, IPV4, IGM, IPV6, SCTP, PAY4),
+
+	/* IPv4 --> GRE/NAT --> MAC+VLAN --> NONE/IPv4/IPv6 */
+	[0xB0] = WX_PTT(IP, IPV4, IGMV, NONE, NONE, PAY3),
+	[0xB1] = WX_PTT(IP, IPV4, IGMV, FGV4, NONE, PAY3),
+	[0xB2] = WX_PTT(IP, IPV4, IGMV, IPV4, NONE, PAY3),
+	[0xB3] = WX_PTT(IP, IPV4, IGMV, IPV4, UDP,  PAY4),
+	[0xB4] = WX_PTT(IP, IPV4, IGMV, IPV4, TCP,  PAY4),
+	[0xB5] = WX_PTT(IP, IPV4, IGMV, IPV4, SCTP, PAY4),
+	[0xB9] = WX_PTT(IP, IPV4, IGMV, FGV6, NONE, PAY3),
+	[0xBA] = WX_PTT(IP, IPV4, IGMV, IPV6, NONE, PAY3),
+	[0xBB] = WX_PTT(IP, IPV4, IGMV, IPV6, UDP,  PAY4),
+	[0xBC] = WX_PTT(IP, IPV4, IGMV, IPV6, TCP,  PAY4),
+	[0xBD] = WX_PTT(IP, IPV4, IGMV, IPV6, SCTP, PAY4),
+
+	/* IPv6 --> IPv4/IPv6 */
+	[0xC1] = WX_PTT(IP, IPV6, IPIP, FGV4, NONE, PAY3),
+	[0xC2] = WX_PTT(IP, IPV6, IPIP, IPV4, NONE, PAY3),
+	[0xC3] = WX_PTT(IP, IPV6, IPIP, IPV4, UDP,  PAY4),
+	[0xC4] = WX_PTT(IP, IPV6, IPIP, IPV4, TCP,  PAY4),
+	[0xC5] = WX_PTT(IP, IPV6, IPIP, IPV4, SCTP, PAY4),
+	[0xC9] = WX_PTT(IP, IPV6, IPIP, FGV6, NONE, PAY3),
+	[0xCA] = WX_PTT(IP, IPV6, IPIP, IPV6, NONE, PAY3),
+	[0xCB] = WX_PTT(IP, IPV6, IPIP, IPV6, UDP,  PAY4),
+	[0xCC] = WX_PTT(IP, IPV6, IPIP, IPV6, TCP,  PAY4),
+	[0xCD] = WX_PTT(IP, IPV6, IPIP, IPV6, SCTP, PAY4),
+
+	/* IPv6 --> GRE/NAT -> NONE/IPv4/IPv6 */
+	[0xD0] = WX_PTT(IP, IPV6, IG, NONE, NONE, PAY3),
+	[0xD1] = WX_PTT(IP, IPV6, IG, FGV4, NONE, PAY3),
+	[0xD2] = WX_PTT(IP, IPV6, IG, IPV4, NONE, PAY3),
+	[0xD3] = WX_PTT(IP, IPV6, IG, IPV4, UDP,  PAY4),
+	[0xD4] = WX_PTT(IP, IPV6, IG, IPV4, TCP,  PAY4),
+	[0xD5] = WX_PTT(IP, IPV6, IG, IPV4, SCTP, PAY4),
+	[0xD9] = WX_PTT(IP, IPV6, IG, FGV6, NONE, PAY3),
+	[0xDA] = WX_PTT(IP, IPV6, IG, IPV6, NONE, PAY3),
+	[0xDB] = WX_PTT(IP, IPV6, IG, IPV6, UDP,  PAY4),
+	[0xDC] = WX_PTT(IP, IPV6, IG, IPV6, TCP,  PAY4),
+	[0xDD] = WX_PTT(IP, IPV6, IG, IPV6, SCTP, PAY4),
+
+	/* IPv6 --> GRE/NAT -> MAC -> NONE/IPv4/IPv6 */
+	[0xE0] = WX_PTT(IP, IPV6, IGM, NONE, NONE, PAY3),
+	[0xE1] = WX_PTT(IP, IPV6, IGM, FGV4, NONE, PAY3),
+	[0xE2] = WX_PTT(IP, IPV6, IGM, IPV4, NONE, PAY3),
+	[0xE3] = WX_PTT(IP, IPV6, IGM, IPV4, UDP,  PAY4),
+	[0xE4] = WX_PTT(IP, IPV6, IGM, IPV4, TCP,  PAY4),
+	[0xE5] = WX_PTT(IP, IPV6, IGM, IPV4, SCTP, PAY4),
+	[0xE9] = WX_PTT(IP, IPV6, IGM, FGV6, NONE, PAY3),
+	[0xEA] = WX_PTT(IP, IPV6, IGM, IPV6, NONE, PAY3),
+	[0xEB] = WX_PTT(IP, IPV6, IGM, IPV6, UDP,  PAY4),
+	[0xEC] = WX_PTT(IP, IPV6, IGM, IPV6, TCP,  PAY4),
+	[0xED] = WX_PTT(IP, IPV6, IGM, IPV6, SCTP, PAY4),
+
+	/* IPv6 --> GRE/NAT -> MAC--> NONE/IPv */
+	[0xF0] = WX_PTT(IP, IPV6, IGMV, NONE, NONE, PAY3),
+	[0xF1] = WX_PTT(IP, IPV6, IGMV, FGV4, NONE, PAY3),
+	[0xF2] = WX_PTT(IP, IPV6, IGMV, IPV4, NONE, PAY3),
+	[0xF3] = WX_PTT(IP, IPV6, IGMV, IPV4, UDP,  PAY4),
+	[0xF4] = WX_PTT(IP, IPV6, IGMV, IPV4, TCP,  PAY4),
+	[0xF5] = WX_PTT(IP, IPV6, IGMV, IPV4, SCTP, PAY4),
+	[0xF9] = WX_PTT(IP, IPV6, IGMV, FGV6, NONE, PAY3),
+	[0xFA] = WX_PTT(IP, IPV6, IGMV, IPV6, NONE, PAY3),
+	[0xFB] = WX_PTT(IP, IPV6, IGMV, IPV6, UDP,  PAY4),
+	[0xFC] = WX_PTT(IP, IPV6, IGMV, IPV6, TCP,  PAY4),
+	[0xFD] = WX_PTT(IP, IPV6, IGMV, IPV6, SCTP, PAY4),
+};
+
+static struct wx_dec_ptype wx_decode_ptype(const u8 ptype)
+{
+	return wx_ptype_lookup[ptype];
+}
+
 /* wx_test_staterr - tests bits in Rx descriptor status and error fields */
 static __le32 wx_test_staterr(union wx_rx_desc *rx_desc,
 			      const u32 stat_err_bits)
@@ -424,6 +562,98 @@ static bool wx_cleanup_headers(struct wx_ring *rx_ring,
 	return false;
 }
 
+static void wx_rx_hash(struct wx_ring *ring,
+		       union wx_rx_desc *rx_desc,
+		       struct sk_buff *skb)
+{
+	u16 rss_type;
+
+	if (!(ring->netdev->features & NETIF_F_RXHASH))
+		return;
+
+	rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) &
+			       WX_RXD_RSSTYPE_MASK;
+
+	if (!rss_type)
+		return;
+
+	skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
+		     (WX_RSS_L4_TYPES_MASK & (1ul << rss_type)) ?
+		     PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3);
+}
+
+/**
+ * wx_rx_checksum - indicate in skb if hw indicated a good cksum
+ * @ring: structure containing ring specific data
+ * @rx_desc: current Rx descriptor being processed
+ * @skb: skb currently being received and modified
+ **/
+static void wx_rx_checksum(struct wx_ring *ring,
+			   union wx_rx_desc *rx_desc,
+			   struct sk_buff *skb)
+{
+	struct wx_dec_ptype dptype = wx_decode_ptype(WX_RXD_PKTTYPE(rx_desc));
+
+	skb_checksum_none_assert(skb);
+	/* Rx csum disabled */
+	if (!(ring->netdev->features & NETIF_F_RXCSUM))
+		return;
+
+	/* if IPv4 header checksum error */
+	if ((wx_test_staterr(rx_desc, WX_RXD_STAT_IPCS) &&
+	     wx_test_staterr(rx_desc, WX_RXD_ERR_IPE)) ||
+	    (wx_test_staterr(rx_desc, WX_RXD_STAT_OUTERIPCS) &&
+	     wx_test_staterr(rx_desc, WX_RXD_ERR_OUTERIPER))) {
+		ring->rx_stats.csum_err++;
+		return;
+	}
+
+	/* L4 checksum offload flag must set for the below code to work */
+	if (!wx_test_staterr(rx_desc, WX_RXD_STAT_L4CS))
+		return;
+
+	/* Hardware can't guarantee csum if IPv6 Dest Header found */
+	if (dptype.prot != WX_DEC_PTYPE_PROT_SCTP && WX_RXD_IPV6EX(rx_desc))
+		return;
+
+	/* if L4 checksum error */
+	if (wx_test_staterr(rx_desc, WX_RXD_ERR_TCPE)) {
+		ring->rx_stats.csum_err++;
+		return;
+	}
+
+	/* It must be a TCP or UDP or SCTP packet with a valid checksum */
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+	/* If there is an outer header present that might contain a checksum
+	 * we need to bump the checksum level by 1 to reflect the fact that
+	 * we are indicating we validated the inner checksum.
+	 */
+	if (dptype.etype >= WX_DEC_PTYPE_ETYPE_IG)
+		__skb_incr_checksum_unnecessary(skb);
+	ring->rx_stats.csum_good_cnt++;
+}
+
+/**
+ * wx_process_skb_fields - Populate skb header fields from Rx descriptor
+ * @rx_ring: rx descriptor ring packet is being transacted on
+ * @rx_desc: pointer to the EOP Rx descriptor
+ * @skb: pointer to current skb being populated
+ *
+ * This function checks the ring, descriptor, and packet information in
+ * order to populate the hash, checksum, protocol, and
+ * other fields within the skb.
+ **/
+static void wx_process_skb_fields(struct wx_ring *rx_ring,
+				  union wx_rx_desc *rx_desc,
+				  struct sk_buff *skb)
+{
+	wx_rx_hash(rx_ring, rx_desc, skb);
+	wx_rx_checksum(rx_ring, rx_desc, skb);
+	skb_record_rx_queue(skb, rx_ring->queue_index);
+	skb->protocol = eth_type_trans(skb, rx_ring->netdev);
+}
+
 /**
  * wx_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
  * @q_vector: structure containing interrupt and ring information
@@ -491,8 +721,8 @@ static int wx_clean_rx_irq(struct wx_q_vector *q_vector,
 		/* probably a little skewed due to removing CRC */
 		total_rx_bytes += skb->len;
 
-		skb_record_rx_queue(skb, rx_ring->queue_index);
-		skb->protocol = eth_type_trans(skb, rx_ring->netdev);
+		/* populate checksum, timestamp, VLAN, and protocol */
+		wx_process_skb_fields(rx_ring, rx_desc, skb);
 		napi_gro_receive(&q_vector->napi, skb);
 
 		/* update budget accounting */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index d2e0584e3b44..47abefb5a4fc 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -321,9 +321,31 @@
 /******************* Receive Descriptor bit definitions **********************/
 #define WX_RXD_STAT_DD               BIT(0) /* Done */
 #define WX_RXD_STAT_EOP              BIT(1) /* End of Packet */
+#define WX_RXD_STAT_L4CS             BIT(7) /* L4 xsum calculated */
+#define WX_RXD_STAT_IPCS             BIT(8) /* IP xsum calculated */
+#define WX_RXD_STAT_OUTERIPCS        BIT(10) /* Cloud IP xsum calculated*/
 
+#define WX_RXD_ERR_OUTERIPER         BIT(26) /* CRC IP Header error */
 #define WX_RXD_ERR_RXE               BIT(29) /* Any MAC Error */
-
+#define WX_RXD_ERR_TCPE              BIT(30) /* TCP/UDP Checksum Error */
+#define WX_RXD_ERR_IPE               BIT(31) /* IP Checksum Error */
+
+/* RSS Hash results */
+#define WX_RXD_RSSTYPE_MASK          GENMASK(3, 0)
+#define WX_RXD_RSSTYPE_IPV4_TCP      0x00000001U
+#define WX_RXD_RSSTYPE_IPV6_TCP      0x00000003U
+#define WX_RXD_RSSTYPE_IPV4_SCTP     0x00000004U
+#define WX_RXD_RSSTYPE_IPV6_SCTP     0x00000006U
+#define WX_RXD_RSSTYPE_IPV4_UDP      0x00000007U
+#define WX_RXD_RSSTYPE_IPV6_UDP      0x00000008U
+
+#define WX_RSS_L4_TYPES_MASK \
+	((1ul << WX_RXD_RSSTYPE_IPV4_TCP) | \
+	 (1ul << WX_RXD_RSSTYPE_IPV4_UDP) | \
+	 (1ul << WX_RXD_RSSTYPE_IPV4_SCTP) | \
+	 (1ul << WX_RXD_RSSTYPE_IPV6_TCP) | \
+	 (1ul << WX_RXD_RSSTYPE_IPV6_UDP) | \
+	 (1ul << WX_RXD_RSSTYPE_IPV6_SCTP))
 /* TUN */
 #define WX_PTYPE_TUN_IPV4            0x80
 #define WX_PTYPE_TUN_IPV6            0xC0
@@ -347,6 +369,10 @@
 #define WX_PTYPE_TYP_TCP             0x04
 #define WX_PTYPE_TYP_SCTP            0x05
 
+#define WX_RXD_PKTTYPE(_rxd) \
+	((le32_to_cpu((_rxd)->wb.lower.lo_dword.data) >> 9) & 0xFF)
+#define WX_RXD_IPV6EX(_rxd) \
+	((le32_to_cpu((_rxd)->wb.lower.lo_dword.data) >> 6) & 0x1)
 /*********************** Transmit Descriptor Config Masks ****************/
 #define WX_TXD_STAT_DD               BIT(0)  /* Descriptor Done */
 #define WX_TXD_DTYP_DATA             0       /* Adv Data Descriptor */
@@ -398,6 +424,70 @@ enum wx_tx_flags {
 #define WX_TX_FLAGS_VLAN_MASK			GENMASK(31, 16)
 #define WX_TX_FLAGS_VLAN_SHIFT			16
 
+/* wx_dec_ptype.mac: outer mac */
+enum wx_dec_ptype_mac {
+	WX_DEC_PTYPE_MAC_IP	= 0,
+	WX_DEC_PTYPE_MAC_L2	= 2,
+	WX_DEC_PTYPE_MAC_FCOE	= 3,
+};
+
+/* wx_dec_ptype.[e]ip: outer&encaped ip */
+#define WX_DEC_PTYPE_IP_FRAG	0x4
+enum wx_dec_ptype_ip {
+	WX_DEC_PTYPE_IP_NONE = 0,
+	WX_DEC_PTYPE_IP_IPV4 = 1,
+	WX_DEC_PTYPE_IP_IPV6 = 2,
+	WX_DEC_PTYPE_IP_FGV4 = WX_DEC_PTYPE_IP_FRAG | WX_DEC_PTYPE_IP_IPV4,
+	WX_DEC_PTYPE_IP_FGV6 = WX_DEC_PTYPE_IP_FRAG | WX_DEC_PTYPE_IP_IPV6,
+};
+
+/* wx_dec_ptype.etype: encaped type */
+enum wx_dec_ptype_etype {
+	WX_DEC_PTYPE_ETYPE_NONE	= 0,
+	WX_DEC_PTYPE_ETYPE_IPIP	= 1,	/* IP+IP */
+	WX_DEC_PTYPE_ETYPE_IG	= 2,	/* IP+GRE */
+	WX_DEC_PTYPE_ETYPE_IGM	= 3,	/* IP+GRE+MAC */
+	WX_DEC_PTYPE_ETYPE_IGMV	= 4,	/* IP+GRE+MAC+VLAN */
+};
+
+/* wx_dec_ptype.proto: payload proto */
+enum wx_dec_ptype_prot {
+	WX_DEC_PTYPE_PROT_NONE	= 0,
+	WX_DEC_PTYPE_PROT_UDP	= 1,
+	WX_DEC_PTYPE_PROT_TCP	= 2,
+	WX_DEC_PTYPE_PROT_SCTP	= 3,
+	WX_DEC_PTYPE_PROT_ICMP	= 4,
+	WX_DEC_PTYPE_PROT_TS	= 5,	/* time sync */
+};
+
+/* wx_dec_ptype.layer: payload layer */
+enum wx_dec_ptype_layer {
+	WX_DEC_PTYPE_LAYER_NONE = 0,
+	WX_DEC_PTYPE_LAYER_PAY2 = 1,
+	WX_DEC_PTYPE_LAYER_PAY3 = 2,
+	WX_DEC_PTYPE_LAYER_PAY4 = 3,
+};
+
+struct wx_dec_ptype {
+	u32 known:1;
+	u32 mac:2;	/* outer mac */
+	u32 ip:3;	/* outer ip*/
+	u32 etype:3;	/* encaped type */
+	u32 eip:3;	/* encaped ip */
+	u32 prot:4;	/* payload proto */
+	u32 layer:3;	/* payload layer */
+};
+
+/* macro to make the table lines short */
+#define WX_PTT(mac, ip, etype, eip, proto, layer)\
+	      {1, \
+	       WX_DEC_PTYPE_MAC_##mac,		/* mac */\
+	       WX_DEC_PTYPE_IP_##ip,		/* ip */ \
+	       WX_DEC_PTYPE_ETYPE_##etype,	/* etype */\
+	       WX_DEC_PTYPE_IP_##eip,		/* eip */\
+	       WX_DEC_PTYPE_PROT_##proto,	/* proto */\
+	       WX_DEC_PTYPE_LAYER_##layer	/* layer */}
+
 /* Host Interface Command Structures */
 struct wx_hic_hdr {
 	u8 cmd;
@@ -620,6 +710,11 @@ struct wx_queue_stats {
 	u64 bytes;
 };
 
+struct wx_rx_queue_stats {
+	u64 csum_good_cnt;
+	u64 csum_err;
+};
+
 /* iterator for handling rings in ring container */
 #define wx_for_each_ring(posm, headm) \
 	for (posm = (headm).ring; posm; posm = posm->next)
@@ -661,6 +756,9 @@ struct wx_ring {
 
 	struct wx_queue_stats stats;
 	struct u64_stats_sync syncp;
+	union {
+		struct wx_rx_queue_stats rx_stats;
+	};
 } ____cacheline_internodealigned_in_smp;
 
 struct wx_q_vector {
-- 
2.40.1

[PATCH net-next v7 3/8] net: wangxun: Implement vlan add and kill functions

[Mengyuan Lou]

Implement vlan add/kill functions which add and remove
vlan id in hardware.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_hw.c   | 272 ++++++++++++++++++-
 drivers/net/ethernet/wangxun/libwx/wx_hw.h   |   3 +
 drivers/net/ethernet/wangxun/libwx/wx_lib.c  |  18 ++
 drivers/net/ethernet/wangxun/libwx/wx_type.h |  25 +-
 4 files changed, 316 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index ca409b4054d0..39a9aeee7aab 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -1182,12 +1182,28 @@ static void wx_enable_sec_rx_path(struct wx *wx)
 	WX_WRITE_FLUSH(wx);
 }
 
+static void wx_vlan_strip_control(struct wx *wx, bool enable)
+{
+	int i, j;
+
+	for (i = 0; i < wx->num_rx_queues; i++) {
+		struct wx_ring *ring = wx->rx_ring[i];
+
+		j = ring->reg_idx;
+		wr32m(wx, WX_PX_RR_CFG(j), WX_PX_RR_CFG_VLAN,
+		      enable ? WX_PX_RR_CFG_VLAN : 0);
+	}
+}
+
 void wx_set_rx_mode(struct net_device *netdev)
 {
 	struct wx *wx = netdev_priv(netdev);
+	netdev_features_t features;
 	u32 fctrl, vmolr, vlnctrl;
 	int count;
 
+	features = netdev->features;
+
 	/* Check for Promiscuous and All Multicast modes */
 	fctrl = rd32(wx, WX_PSR_CTL);
 	fctrl &= ~(WX_PSR_CTL_UPE | WX_PSR_CTL_MPE);
@@ -1254,6 +1270,13 @@ void wx_set_rx_mode(struct net_device *netdev)
 	wr32(wx, WX_PSR_VLAN_CTL, vlnctrl);
 	wr32(wx, WX_PSR_CTL, fctrl);
 	wr32(wx, WX_PSR_VM_L2CTL(0), vmolr);
+
+	if ((features & NETIF_F_HW_VLAN_CTAG_RX) &&
+	    (features & NETIF_F_HW_VLAN_STAG_RX))
+		wx_vlan_strip_control(wx, true);
+	else
+		wx_vlan_strip_control(wx, false);
+
 }
 EXPORT_SYMBOL(wx_set_rx_mode);
 
@@ -1462,6 +1485,16 @@ static void wx_configure_tx(struct wx *wx)
 	      WX_MAC_TX_CFG_TE, WX_MAC_TX_CFG_TE);
 }
 
+static void wx_restore_vlan(struct wx *wx)
+{
+	u16 vid = 1;
+
+	wx_vlan_rx_add_vid(wx->netdev, htons(ETH_P_8021Q), 0);
+
+	for_each_set_bit_from(vid, wx->active_vlans, VLAN_N_VID)
+		wx_vlan_rx_add_vid(wx->netdev, htons(ETH_P_8021Q), vid);
+}
+
 /**
  * wx_configure_rx - Configure Receive Unit after Reset
  * @wx: pointer to private structure
@@ -1527,7 +1560,7 @@ void wx_configure(struct wx *wx)
 	wx_configure_port(wx);
 
 	wx_set_rx_mode(wx->netdev);
-
+	wx_restore_vlan(wx);
 	wx_enable_sec_rx_path(wx);
 
 	wx_configure_tx(wx);
@@ -1727,4 +1760,241 @@ int wx_sw_init(struct wx *wx)
 }
 EXPORT_SYMBOL(wx_sw_init);
 
+/**
+ *  wx_find_vlvf_slot - find the vlanid or the first empty slot
+ *  @wx: pointer to hardware structure
+ *  @vlan: VLAN id to write to VLAN filter
+ *
+ *  return the VLVF index where this VLAN id should be placed
+ *
+ **/
+static int wx_find_vlvf_slot(struct wx *wx, u32 vlan)
+{
+	u32 bits = 0, first_empty_slot = 0;
+	int regindex;
+
+	/* short cut the special case */
+	if (vlan == 0)
+		return 0;
+
+	/* Search for the vlan id in the VLVF entries. Save off the first empty
+	 * slot found along the way
+	 */
+	for (regindex = 1; regindex < WX_PSR_VLAN_SWC_ENTRIES; regindex++) {
+		wr32(wx, WX_PSR_VLAN_SWC_IDX, regindex);
+		bits = rd32(wx, WX_PSR_VLAN_SWC);
+		if (!bits && !(first_empty_slot))
+			first_empty_slot = regindex;
+		else if ((bits & 0x0FFF) == vlan)
+			break;
+	}
+
+	if (regindex >= WX_PSR_VLAN_SWC_ENTRIES) {
+		if (first_empty_slot)
+			regindex = first_empty_slot;
+		else
+			regindex = -ENOMEM;
+	}
+
+	return regindex;
+}
+
+/**
+ *  wx_set_vlvf - Set VLAN Pool Filter
+ *  @wx: pointer to hardware structure
+ *  @vlan: VLAN id to write to VLAN filter
+ *  @vind: VMDq output index that maps queue to VLAN id in VFVFB
+ *  @vlan_on: boolean flag to turn on/off VLAN in VFVF
+ *  @vfta_changed: pointer to boolean flag which indicates whether VFTA
+ *                 should be changed
+ *
+ *  Turn on/off specified bit in VLVF table.
+ **/
+static int wx_set_vlvf(struct wx *wx, u32 vlan, u32 vind, bool vlan_on,
+		       bool *vfta_changed)
+{
+	int vlvf_index;
+	u32 vt, bits;
+
+	/* If VT Mode is set
+	 *   Either vlan_on
+	 *     make sure the vlan is in VLVF
+	 *     set the vind bit in the matching VLVFB
+	 *   Or !vlan_on
+	 *     clear the pool bit and possibly the vind
+	 */
+	vt = rd32(wx, WX_CFG_PORT_CTL);
+	if (!(vt & WX_CFG_PORT_CTL_NUM_VT_MASK))
+		return 0;
+
+	vlvf_index = wx_find_vlvf_slot(wx, vlan);
+	if (vlvf_index < 0)
+		return vlvf_index;
+
+	wr32(wx, WX_PSR_VLAN_SWC_IDX, vlvf_index);
+	if (vlan_on) {
+		/* set the pool bit */
+		if (vind < 32) {
+			bits = rd32(wx, WX_PSR_VLAN_SWC_VM_L);
+			bits |= (1 << vind);
+			wr32(wx, WX_PSR_VLAN_SWC_VM_L, bits);
+		} else {
+			bits = rd32(wx, WX_PSR_VLAN_SWC_VM_H);
+			bits |= (1 << (vind - 32));
+			wr32(wx, WX_PSR_VLAN_SWC_VM_H, bits);
+		}
+	} else {
+		/* clear the pool bit */
+		if (vind < 32) {
+			bits = rd32(wx, WX_PSR_VLAN_SWC_VM_L);
+			bits &= ~(1 << vind);
+			wr32(wx, WX_PSR_VLAN_SWC_VM_L, bits);
+			bits |= rd32(wx, WX_PSR_VLAN_SWC_VM_H);
+		} else {
+			bits = rd32(wx, WX_PSR_VLAN_SWC_VM_H);
+			bits &= ~(1 << (vind - 32));
+			wr32(wx, WX_PSR_VLAN_SWC_VM_H, bits);
+			bits |= rd32(wx, WX_PSR_VLAN_SWC_VM_L);
+		}
+	}
+
+	if (bits) {
+		wr32(wx, WX_PSR_VLAN_SWC, (WX_PSR_VLAN_SWC_VIEN | vlan));
+		if (!vlan_on && vfta_changed)
+			*vfta_changed = false;
+	} else {
+		wr32(wx, WX_PSR_VLAN_SWC, 0);
+	}
+
+	return 0;
+}
+
+/**
+ *  wx_set_vfta - Set VLAN filter table
+ *  @wx: pointer to hardware structure
+ *  @vlan: VLAN id to write to VLAN filter
+ *  @vind: VMDq output index that maps queue to VLAN id in VFVFB
+ *  @vlan_on: boolean flag to turn on/off VLAN in VFVF
+ *
+ *  Turn on/off specified VLAN in the VLAN filter table.
+ **/
+static int wx_set_vfta(struct wx *wx, u32 vlan, u32 vind, bool vlan_on)
+{
+	u32 bitindex, vfta, targetbit;
+	bool vfta_changed = false;
+	int regindex, ret;
+
+	/* this is a 2 part operation - first the VFTA, then the
+	 * VLVF and VLVFB if VT Mode is set
+	 * We don't write the VFTA until we know the VLVF part succeeded.
+	 */
+
+	/* Part 1
+	 * The VFTA is a bitstring made up of 128 32-bit registers
+	 * that enable the particular VLAN id, much like the MTA:
+	 *    bits[11-5]: which register
+	 *    bits[4-0]:  which bit in the register
+	 */
+	regindex = (vlan >> 5) & 0x7F;
+	bitindex = vlan & 0x1F;
+	targetbit = (1 << bitindex);
+	/* errata 5 */
+	vfta = wx->mac.vft_shadow[regindex];
+	if (vlan_on) {
+		if (!(vfta & targetbit)) {
+			vfta |= targetbit;
+			vfta_changed = true;
+		}
+	} else {
+		if ((vfta & targetbit)) {
+			vfta &= ~targetbit;
+			vfta_changed = true;
+		}
+	}
+	/* Part 2
+	 * Call wx_set_vlvf to set VLVFB and VLVF
+	 */
+	ret = wx_set_vlvf(wx, vlan, vind, vlan_on, &vfta_changed);
+	if (ret != 0)
+		return ret;
+
+	if (vfta_changed)
+		wr32(wx, WX_PSR_VLAN_TBL(regindex), vfta);
+	wx->mac.vft_shadow[regindex] = vfta;
+
+	return 0;
+}
+
+/**
+ *  wx_clear_vfta - Clear VLAN filter table
+ *  @wx: pointer to hardware structure
+ *
+ *  Clears the VLAN filer table, and the VMDq index associated with the filter
+ **/
+static void wx_clear_vfta(struct wx *wx)
+{
+	u32 offset;
+
+	for (offset = 0; offset < wx->mac.vft_size; offset++) {
+		wr32(wx, WX_PSR_VLAN_TBL(offset), 0);
+		wx->mac.vft_shadow[offset] = 0;
+	}
+
+	for (offset = 0; offset < WX_PSR_VLAN_SWC_ENTRIES; offset++) {
+		wr32(wx, WX_PSR_VLAN_SWC_IDX, offset);
+		wr32(wx, WX_PSR_VLAN_SWC, 0);
+		wr32(wx, WX_PSR_VLAN_SWC_VM_L, 0);
+		wr32(wx, WX_PSR_VLAN_SWC_VM_H, 0);
+	}
+}
+
+int wx_vlan_rx_add_vid(struct net_device *netdev,
+		       __be16 proto, u16 vid)
+{
+	struct wx *wx = netdev_priv(netdev);
+
+	/* add VID to filter table */
+	wx_set_vfta(wx, vid, VMDQ_P(0), true);
+	set_bit(vid, wx->active_vlans);
+
+	return 0;
+}
+EXPORT_SYMBOL(wx_vlan_rx_add_vid);
+
+int wx_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
+{
+	struct wx *wx = netdev_priv(netdev);
+
+	/* remove VID from filter table */
+	if (vid)
+		wx_set_vfta(wx, vid, VMDQ_P(0), false);
+	clear_bit(vid, wx->active_vlans);
+
+	return 0;
+}
+EXPORT_SYMBOL(wx_vlan_rx_kill_vid);
+
+/**
+ *  wx_start_hw - Prepare hardware for Tx/Rx
+ *  @wx: pointer to hardware structure
+ *
+ *  Starts the hardware using the generic start_hw function
+ *  and the generation start_hw function.
+ *  Then performs revision-specific operations, if any.
+ **/
+void wx_start_hw(struct wx *wx)
+{
+	int i;
+
+	/* Clear the VLAN filter table */
+	wx_clear_vfta(wx);
+	WX_WRITE_FLUSH(wx);
+	/* Clear the rate limiters */
+	for (i = 0; i < wx->mac.max_tx_queues; i++) {
+		wr32(wx, WX_TDM_RP_IDX, i);
+		wr32(wx, WX_TDM_RP_RATE, 0);
+	}
+}
+EXPORT_SYMBOL(wx_start_hw);
+
 MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.h b/drivers/net/ethernet/wangxun/libwx/wx_hw.h
index c173c56f0ab5..1f93ca32c921 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.h
@@ -26,10 +26,13 @@ void wx_set_rx_mode(struct net_device *netdev);
 int wx_change_mtu(struct net_device *netdev, int new_mtu);
 void wx_disable_rx_queue(struct wx *wx, struct wx_ring *ring);
 void wx_configure(struct wx *wx);
+void wx_start_hw(struct wx *wx);
 int wx_disable_pcie_master(struct wx *wx);
 int wx_stop_adapter(struct wx *wx);
 void wx_reset_misc(struct wx *wx);
 int wx_get_pcie_msix_counts(struct wx *wx, u16 *msix_count, u16 max_msix_count);
 int wx_sw_init(struct wx *wx);
+int wx_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid);
+int wx_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid);
 
 #endif /* _WX_HW_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 84107208401e..680f1ad36240 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -634,6 +634,23 @@ static void wx_rx_checksum(struct wx_ring *ring,
 	ring->rx_stats.csum_good_cnt++;
 }
 
+static void wx_rx_vlan(struct wx_ring *ring, union wx_rx_desc *rx_desc,
+		       struct sk_buff *skb)
+{
+	u16 ethertype;
+	u8 idx = 0;
+
+	if ((ring->netdev->features &
+	     (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX)) &&
+	    wx_test_staterr(rx_desc, WX_RXD_STAT_VP)) {
+		idx = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) &
+		       0x1c0) >> 6;
+		ethertype = ring->q_vector->wx->tpid[idx];
+		__vlan_hwaccel_put_tag(skb, htons(ethertype),
+				       le16_to_cpu(rx_desc->wb.upper.vlan));
+	}
+}
+
 /**
  * wx_process_skb_fields - Populate skb header fields from Rx descriptor
  * @rx_ring: rx descriptor ring packet is being transacted on
@@ -650,6 +667,7 @@ static void wx_process_skb_fields(struct wx_ring *rx_ring,
 {
 	wx_rx_hash(rx_ring, rx_desc, skb);
 	wx_rx_checksum(rx_ring, rx_desc, skb);
+	wx_rx_vlan(rx_ring, rx_desc, skb);
 	skb_record_rx_queue(skb, rx_ring->queue_index);
 	skb->protocol = eth_type_trans(skb, rx_ring->netdev);
 }
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 47abefb5a4fc..a7ff6c6749d0 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -6,6 +6,7 @@
 
 #include <linux/bitfield.h>
 #include <linux/netdevice.h>
+#include <linux/if_vlan.h>
 #include <net/ip.h>
 
 #define WX_NCSI_SUP                             0x8000
@@ -65,6 +66,8 @@
 #define WX_CFG_PORT_CTL_QINQ         BIT(2)
 #define WX_CFG_PORT_CTL_D_VLAN       BIT(0) /* double vlan*/
 #define WX_CFG_TAG_TPID(_i)          (0x14430 + ((_i) * 4))
+#define WX_CFG_PORT_CTL_NUM_VT_MASK  GENMASK(13, 12) /* number of TVs */
+
 
 /* GPIO Registers */
 #define WX_GPIO_DR                   0x14800
@@ -88,6 +91,8 @@
 /* TDM CTL BIT */
 #define WX_TDM_CTL_TE                BIT(0) /* Transmit Enable */
 #define WX_TDM_PB_THRE(_i)           (0x18020 + ((_i) * 4))
+#define WX_TDM_RP_IDX                0x1820C
+#define WX_TDM_RP_RATE               0x18404
 
 /***************************** RDB registers *********************************/
 /* receive packet buffer */
@@ -151,6 +156,9 @@
 #define WX_PSR_LAN_FLEX_DW_H(_i)     (0x15C04 + ((_i) * 16))
 #define WX_PSR_LAN_FLEX_MSK(_i)      (0x15C08 + ((_i) * 16))
 
+/* vlan tbl */
+#define WX_PSR_VLAN_TBL(_i)          (0x16000 + ((_i) * 4))
+
 /* mac switcher */
 #define WX_PSR_MAC_SWC_AD_L          0x16200
 #define WX_PSR_MAC_SWC_AD_H          0x16204
@@ -162,6 +170,15 @@
 #define WX_PSR_MAC_SWC_IDX           0x16210
 #define WX_CLEAR_VMDQ_ALL            0xFFFFFFFFU
 
+/* vlan switch */
+#define WX_PSR_VLAN_SWC              0x16220
+#define WX_PSR_VLAN_SWC_VM_L         0x16224
+#define WX_PSR_VLAN_SWC_VM_H         0x16228
+#define WX_PSR_VLAN_SWC_IDX          0x16230         /* 64 vlan entries */
+/* VLAN pool filtering masks */
+#define WX_PSR_VLAN_SWC_VIEN         BIT(31)  /* filter is valid */
+#define WX_PSR_VLAN_SWC_ENTRIES      64
+
 /********************************* RSEC **************************************/
 /* general rsec */
 #define WX_RSC_CTL                   0x17000
@@ -256,6 +273,7 @@
 #define WX_PX_RR_RP(_i)              (0x0100C + ((_i) * 0x40))
 #define WX_PX_RR_CFG(_i)             (0x01010 + ((_i) * 0x40))
 /* PX_RR_CFG bit definitions */
+#define WX_PX_RR_CFG_VLAN            BIT(31)
 #define WX_PX_RR_CFG_SPLIT_MODE      BIT(26)
 #define WX_PX_RR_CFG_RR_THER_SHIFT   16
 #define WX_PX_RR_CFG_RR_HDR_SZ       GENMASK(15, 12)
@@ -297,6 +315,7 @@
 #define WX_MAX_TXD                   8192
 
 #define WX_MAX_JUMBO_FRAME_SIZE      9432 /* max payload 9414 */
+#define VMDQ_P(p)                    p
 
 /* Supported Rx Buffer Sizes */
 #define WX_RXBUFFER_256      256    /* Used for skb receive header */
@@ -321,6 +340,7 @@
 /******************* Receive Descriptor bit definitions **********************/
 #define WX_RXD_STAT_DD               BIT(0) /* Done */
 #define WX_RXD_STAT_EOP              BIT(1) /* End of Packet */
+#define WX_RXD_STAT_VP               BIT(5) /* IEEE VLAN Pkt */
 #define WX_RXD_STAT_L4CS             BIT(7) /* L4 xsum calculated */
 #define WX_RXD_STAT_IPCS             BIT(8) /* IP xsum calculated */
 #define WX_RXD_STAT_OUTERIPCS        BIT(10) /* Cloud IP xsum calculated*/
@@ -566,6 +586,8 @@ struct wx_mac_info {
 	u32 mta_shadow[128];
 	s32 mc_filter_type;
 	u32 mcft_size;
+	u32 vft_shadow[128];
+	u32 vft_size;
 	u32 num_rar_entries;
 	u32 rx_pb_size;
 	u32 tx_pb_size;
@@ -726,7 +748,6 @@ struct wx_ring_container {
 	u8 count;                       /* total number of rings in vector */
 	u8 itr;                         /* current ITR setting for ring */
 };
-
 struct wx_ring {
 	struct wx_ring *next;           /* pointer to next ring in q_vector */
 	struct wx_q_vector *q_vector;   /* backpointer to host q_vector */
@@ -789,6 +810,8 @@ enum wx_isb_idx {
 };
 
 struct wx {
+	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+
 	u8 __iomem *hw_addr;
 	struct pci_dev *pdev;
 	struct net_device *netdev;
-- 
2.40.1

[PATCH net-next v7 4/8] net: libwx: Implement xx_set_features ops

[Mengyuan Lou]

Implement wx_set_features function which to support
ndo_set_features.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_lib.c  | 20 ++++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_lib.h  |  1 +
 drivers/net/ethernet/wangxun/libwx/wx_type.h |  2 ++
 3 files changed, 23 insertions(+)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 680f1ad36240..3dd328d33fcc 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -2704,4 +2704,24 @@ void wx_get_stats64(struct net_device *netdev,
 }
 EXPORT_SYMBOL(wx_get_stats64);
 
+int wx_set_features(struct net_device *netdev, netdev_features_t features)
+{
+	netdev_features_t changed = netdev->features ^ features;
+	struct wx *wx = netdev_priv(netdev);
+
+	if (changed & NETIF_F_RXHASH)
+		wr32m(wx, WX_RDB_RA_CTL, WX_RDB_RA_CTL_RSS_EN,
+		      WX_RDB_RA_CTL_RSS_EN);
+	else
+		wr32m(wx, WX_RDB_RA_CTL, WX_RDB_RA_CTL_RSS_EN, 0);
+
+	if (changed &
+	    (NETIF_F_HW_VLAN_CTAG_RX |
+	     NETIF_F_HW_VLAN_STAG_RX))
+		wx_set_rx_mode(netdev);
+
+	return 1;
+}
+EXPORT_SYMBOL(wx_set_features);
+
 MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.h b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
index 50ee41f1fa10..df1f4a5951f0 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
@@ -28,5 +28,6 @@ void wx_free_resources(struct wx *wx);
 int wx_setup_resources(struct wx *wx);
 void wx_get_stats64(struct net_device *netdev,
 		    struct rtnl_link_stats64 *stats);
+int wx_set_features(struct net_device *netdev, netdev_features_t features);
 
 #endif /* _NGBE_LIB_H_ */
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index a7ff6c6749d0..a52cc5ac1db6 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -111,6 +111,8 @@
 #define WX_RDB_PL_CFG_L2HDR          BIT(3)
 #define WX_RDB_PL_CFG_TUN_TUNHDR     BIT(4)
 #define WX_RDB_PL_CFG_TUN_OUTL2HDR   BIT(5)
+#define WX_RDB_RA_CTL                0x194F4
+#define WX_RDB_RA_CTL_RSS_EN         BIT(2) /* RSS Enable */
 
 /******************************* PSR Registers *******************************/
 /* psr control */
-- 
2.40.1

[PATCH net-next v7 5/8] net: ngbe: Add netdev features support

[Mengyuan Lou]

Add features and hw_features that ngbe can support.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index df6b870aa871..f234c9c4b942 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -473,6 +473,7 @@ static const struct net_device_ops ngbe_netdev_ops = {
 	.ndo_change_mtu         = wx_change_mtu,
 	.ndo_start_xmit         = wx_xmit_frame,
 	.ndo_set_rx_mode        = wx_set_rx_mode,
+	.ndo_set_features       = wx_set_features,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,
@@ -551,12 +552,18 @@ static int ngbe_probe(struct pci_dev *pdev,
 	ngbe_set_ethtool_ops(netdev);
 	netdev->netdev_ops = &ngbe_netdev_ops;
 
-	netdev->features |= NETIF_F_HIGHDMA;
-	netdev->features = NETIF_F_SG;
-
+	netdev->features = NETIF_F_SG | NETIF_F_IP_CSUM |
+			   NETIF_F_TSO | NETIF_F_TSO6 |
+			   NETIF_F_RXHASH | NETIF_F_RXCSUM;
+	netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_TSO_MANGLEID;
+	netdev->vlan_features |= netdev->features;
+	netdev->features |= NETIF_F_IPV6_CSUM | NETIF_F_VLAN_FEATURES;
 	/* copy netdev features into list of user selectable features */
-	netdev->hw_features |= netdev->features |
-			       NETIF_F_RXALL;
+	netdev->hw_features |= netdev->features | NETIF_F_RXALL;
+	netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
+	netdev->features |= NETIF_F_HIGHDMA;
+	netdev->hw_features |= NETIF_F_GRO;
+	netdev->features |= NETIF_F_GRO;
 
 	netdev->priv_flags |= IFF_UNICAST_FLT;
 	netdev->priv_flags |= IFF_SUPP_NOFCS;
-- 
2.40.1

[PATCH net-next v7 6/8] net: ngbe: Implement vlan add and remove ops

[Mengyuan Lou]

ngbe add ndo_vlan_rx_add_vid and ndo_vlan_rx_kill_vid.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 3 +++
 drivers/net/ethernet/wangxun/ngbe/ngbe_type.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index f234c9c4b942..c99a5d3de72e 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -115,6 +115,7 @@ static int ngbe_sw_init(struct wx *wx)
 	wx->mac.max_rx_queues = NGBE_MAX_RX_QUEUES;
 	wx->mac.max_tx_queues = NGBE_MAX_TX_QUEUES;
 	wx->mac.mcft_size = NGBE_MC_TBL_SIZE;
+	wx->mac.vft_size = NGBE_SP_VFT_TBL_SIZE;
 	wx->mac.rx_pb_size = NGBE_RX_PB_SIZE;
 	wx->mac.tx_pb_size = NGBE_TDB_PB_SZ;
 
@@ -477,6 +478,8 @@ static const struct net_device_ops ngbe_netdev_ops = {
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,
+	.ndo_vlan_rx_add_vid    = wx_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid   = wx_vlan_rx_kill_vid,
 };
 
 /**
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
index 373d5af628cd..b70eca397b67 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_type.h
@@ -136,6 +136,7 @@ enum NGBE_MSCA_CMD_value {
 #define NGBE_RAR_ENTRIES			32
 #define NGBE_RX_PB_SIZE				42
 #define NGBE_MC_TBL_SIZE			128
+#define NGBE_SP_VFT_TBL_SIZE			128
 #define NGBE_TDB_PB_SZ				(20 * 1024) /* 160KB Packet Buffer */
 
 /* TX/RX descriptor defines */
-- 
2.40.1

[PATCH net-next v7 7/8] net: txgbe: Add netdev features support

[Mengyuan Lou]

Add features and hw_features that ngbe can support.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 .../net/ethernet/wangxun/txgbe/txgbe_main.c   | 21 ++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index 5b8a121fb496..bcc9c2959177 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -491,6 +491,7 @@ static const struct net_device_ops txgbe_netdev_ops = {
 	.ndo_change_mtu         = wx_change_mtu,
 	.ndo_start_xmit         = wx_xmit_frame,
 	.ndo_set_rx_mode        = wx_set_rx_mode,
+	.ndo_set_features       = wx_set_features,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,
@@ -596,11 +597,25 @@ static int txgbe_probe(struct pci_dev *pdev,
 		goto err_free_mac_table;
 	}
 
-	netdev->features |= NETIF_F_HIGHDMA;
-	netdev->features = NETIF_F_SG;
-
+	netdev->features = NETIF_F_SG |
+			   NETIF_F_TSO |
+			   NETIF_F_TSO6 |
+			   NETIF_F_RXHASH |
+			   NETIF_F_RXCSUM |
+			   NETIF_F_HW_CSUM;
+
+	netdev->gso_partial_features =  NETIF_F_GSO_ENCAP_ALL;
+	netdev->features |= netdev->gso_partial_features;
+	netdev->features |= NETIF_F_SCTP_CRC;
+	netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
+	netdev->hw_enc_features |= netdev->vlan_features;
+	netdev->features |= NETIF_F_VLAN_FEATURES;
 	/* copy netdev features into list of user selectable features */
 	netdev->hw_features |= netdev->features | NETIF_F_RXALL;
+	netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
+	netdev->features |= NETIF_F_HIGHDMA;
+	netdev->hw_features |= NETIF_F_GRO;
+	netdev->features |= NETIF_F_GRO;
 
 	netdev->priv_flags |= IFF_UNICAST_FLT;
 	netdev->priv_flags |= IFF_SUPP_NOFCS;
-- 
2.40.1

[PATCH net-next v7 8/8] net: txgbe: Implement vlan add and remove ops

[Mengyuan Lou]

txgbe add ndo_vlan_rx_add_vid and ndo_vlan_rx_kill_vid.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
---
 drivers/net/ethernet/wangxun/txgbe/txgbe_main.c | 4 ++++
 drivers/net/ethernet/wangxun/txgbe/txgbe_type.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index bcc9c2959177..0f0d9fa1cde1 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -258,6 +258,7 @@ static void txgbe_reset(struct wx *wx)
 	if (err != 0)
 		wx_err(wx, "Hardware Error: %d\n", err);
 
+	wx_start_hw(wx);
 	/* do not flush user set addresses */
 	memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len);
 	wx_flush_sw_mac_table(wx);
@@ -330,6 +331,7 @@ static int txgbe_sw_init(struct wx *wx)
 	wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES;
 	wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES;
 	wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE;
+	wx->mac.vft_size = TXGBE_SP_VFT_TBL_SIZE;
 	wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE;
 	wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ;
 
@@ -495,6 +497,8 @@ static const struct net_device_ops txgbe_netdev_ops = {
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,
+	.ndo_vlan_rx_add_vid    = wx_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid   = wx_vlan_rx_kill_vid,
 };
 
 /**
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
index 63a1c733718d..032972369965 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -77,6 +77,7 @@
 #define TXGBE_SP_MAX_RX_QUEUES  128
 #define TXGBE_SP_RAR_ENTRIES    128
 #define TXGBE_SP_MC_TBL_SIZE    128
+#define TXGBE_SP_VFT_TBL_SIZE   128
 #define TXGBE_SP_RX_PB_SIZE     512
 #define TXGBE_SP_TDB_PB_SZ      (160 * 1024) /* 160KB Packet Buffer */
 
-- 
2.40.1