/* 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"
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;
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;
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,
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;
}
#include <linux/bitfield.h>
#include <linux/netdevice.h>
+#include <net/ip.h>
#define WX_NCSI_SUP 0x8000
#define WX_NCSI_MASK 0x8000
#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 **********************/
#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 */
#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;
} 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
unsigned short gso_segs;
DEFINE_DMA_UNMAP_ADDR(dma);
DEFINE_DMA_UNMAP_LEN(len);
+ __be16 protocol;
+ u32 tx_flags;
};
struct wx_rx_buffer {
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