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net: wangxun: libwx add tx offload functions

Browse source 
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>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Mengyuan Lou 2023-05-30 10:26:25 +08:00 committed by Jakub Kicinski
parent 6f4b98147b
commit 3403960cdf
2 changed files with 541 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

462
drivers/net/ethernet/wangxun/libwx/wx_lib.c
View file

@ -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;
}

87
drivers/net/ethernet/wangxun/libwx/wx_type.h
View file

@ -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 {