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Message-Id: <20230417105457.82127-2-mengyuanlou@net-swift.com>
Date: Mon, 17 Apr 2023 18:54:53 +0800
From: Mengyuan Lou <mengyuanlou@...-swift.com>
To: netdev@...r.kernel.org
Cc: jiawenwu@...stnetic.com, mengyuanlou <mengyuanlou@...-swift.com>
Subject: [PATCH net-next v2 1/5] net: wangxun: libwx add tx offload functions
From: mengyuanlou <mengyuanlou@...-swift.com>
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@...-swift.com>
---
drivers/net/ethernet/wangxun/libwx/wx_lib.c | 533 ++++++++++++++++++-
drivers/net/ethernet/wangxun/libwx/wx_type.h | 228 +++++++-
include/uapi/linux/if_ether.h | 1 +
3 files changed, 754 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index eb89a274083e..8cef1f53ffb2 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 +881,458 @@ 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 u8 wx_get_ipv6_proto(struct sk_buff *skb, int offset)
+{
+ struct ipv6hdr *hdr = (struct ipv6hdr *)(skb->data + offset);
+ u8 nexthdr = hdr->nexthdr;
+
+ offset += sizeof(struct ipv6hdr);
+
+ while (ipv6_ext_hdr(nexthdr)) {
+ struct ipv6_opt_hdr _hdr, *hp;
+
+ if (nexthdr == NEXTHDR_NONE)
+ break;
+
+ hp = skb_header_pointer(skb, offset, sizeof(_hdr), &_hdr);
+ if (!hp)
+ break;
+
+ if (nexthdr == NEXTHDR_FRAGMENT)
+ break;
+ else if (nexthdr == NEXTHDR_AUTH)
+ offset += ipv6_authlen(hp);
+ else
+ offset += ipv6_optlen(hp);
+ nexthdr = hp->nexthdr;
+ }
+
+ return 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;
+ if (ip_is_fragment(ip_hdr(skb)))
+ goto encap_frag;
+ ptype = WX_PTYPE_TUN_IPV4;
+ break;
+ case htons(ETH_P_IPV6):
+ tun_prot = wx_get_ipv6_proto(skb, skb_network_offset(skb));
+ if (tun_prot == NEXTHDR_FRAGMENT)
+ goto encap_frag;
+ ptype = WX_PTYPE_TUN_IPV6;
+ break;
+ default:
+ goto exit;
+ }
+
+ 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 {
+ goto exit;
+ }
+
+ switch (hdr.ipv4->version) {
+ case IPVERSION:
+ l4_prot = hdr.ipv4->protocol;
+ if (ip_is_fragment(ip_hdr(skb))) {
+ ptype |= WX_PTYPE_TYP_IPFRAG;
+ goto exit;
+ }
+ break;
+ case 6:
+ l4_prot = wx_get_ipv6_proto(skb, skb_inner_network_offset(skb));
+ ptype |= WX_PTYPE_PKT_IPV6;
+ if (l4_prot == NEXTHDR_FRAGMENT) {
+ ptype |= WX_PTYPE_TYP_IPFRAG;
+ goto exit;
+ }
+ break;
+ default:
+ goto exit;
+ }
+ } else {
+encap_frag:
+ switch (first->protocol) {
+ case htons(ETH_P_IP):
+ l4_prot = ip_hdr(skb)->protocol;
+ ptype = WX_PTYPE_PKT_IP;
+ if (ip_is_fragment(ip_hdr(skb))) {
+ ptype |= WX_PTYPE_TYP_IPFRAG;
+ goto exit;
+ }
+ break;
+ case htons(ETH_P_IPV6):
+ l4_prot = wx_get_ipv6_proto(skb, skb_network_offset(skb));
+ ptype = WX_PTYPE_PKT_IP | WX_PTYPE_PKT_IPV6;
+ if (l4_prot == NEXTHDR_FRAGMENT) {
+ ptype |= WX_PTYPE_TYP_IPFRAG;
+ goto exit;
+ }
+ break;
+ case htons(ETH_P_1588):
+ ptype = WX_PTYPE_L2_TS;
+ goto exit;
+ case htons(ETH_P_FIP):
+ ptype = WX_PTYPE_L2_FIP;
+ goto exit;
+ case htons(ETH_P_LLDP):
+ ptype = WX_PTYPE_L2_LLDP;
+ goto exit;
+ case htons(ETH_P_CNM):
+ ptype = WX_PTYPE_L2_CNM;
+ goto exit;
+ case htons(ETH_P_PAE):
+ ptype = WX_PTYPE_L2_EAPOL;
+ goto exit;
+ case htons(ETH_P_ARP):
+ ptype = WX_PTYPE_L2_ARP;
+ goto exit;
+ default:
+ ptype = WX_PTYPE_L2_MAC;
+ goto exit;
+ }
+ }
+ 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;
+ }
+
+exit:
+ 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;
+ struct sk_buff *skb = first->skb;
+ u32 l4len, tunhdr_eiplen_tunlen;
+ 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:
+ if (unlikely(net_ratelimit())) {
+ dev_warn(tx_ring->dev,
+ "partial checksum but version=%d\n",
+ network_hdr.ipv4->version);
+ }
+ 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));
+ __be16 protocol = skb->protocol;
struct wx_tx_buffer *first;
unsigned short f;
+ u32 tx_flags = 0;
+ u8 hdr_len = 0;
+ u8 ptype;
+ 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 +1353,41 @@ 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;
+ /* else if it is a SW VLAN check the next protocol and store the tag */
+ } else if (protocol == htons(ETH_P_8021Q)) {
+ struct vlan_hdr *vhdr, _vhdr;
+
+ vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr);
+ if (!vhdr)
+ goto out_drop;
+
+ protocol = vhdr->h_vlan_encapsulated_proto;
+ tx_flags |= ntohs(vhdr->h_vlan_TCI) << WX_TX_FLAGS_VLAN_SHIFT;
+ tx_flags |= WX_TX_FLAGS_SW_VLAN;
+ }
+ protocol = vlan_get_protocol(skb);
+
+ /* record initial flags and protocol */
+ first->tx_flags = tx_flags;
+ first->protocol = protocol;
+
+ 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..4981fc84a918 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
@@ -296,6 +297,7 @@
#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 */
@@ -315,9 +317,6 @@
#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 +325,103 @@
#define WX_RXD_ERR_RXE BIT(29) /* Any MAC Error */
+/**
+ * receive packet type
+ * PTYPE:8 = TUN:2 + PKT:2 + TYP:4
+ **/
+/* 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
+#define WX_PTYPE_PKT_FCOE 0x30
+
+/* TYP for PKT=mac */
+#define WX_PTYPE_TYP_MAC 0x01
+#define WX_PTYPE_TYP_TS 0x02 /* time sync */
+#define WX_PTYPE_TYP_FIP 0x03
+#define WX_PTYPE_TYP_LLDP 0x04
+#define WX_PTYPE_TYP_CNM 0x05
+#define WX_PTYPE_TYP_EAPOL 0x06
+#define WX_PTYPE_TYP_ARP 0x07
+/* 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
+/* TYP for PKT=fcoe */
+#define WX_PTYPE_PKT_VFT 0x08
+#define WX_PTYPE_TYP_FCOE 0x00
+#define WX_PTYPE_TYP_FCDATA 0x01
+#define WX_PTYPE_TYP_FCRDY 0x02
+#define WX_PTYPE_TYP_FCRSP 0x03
+#define WX_PTYPE_TYP_FCOTHER 0x04
+
+/* Packet type non-ip values */
+enum wx_l2_ptypes {
+ WX_PTYPE_L2_ABORTED = (WX_PTYPE_PKT_MAC),
+ WX_PTYPE_L2_MAC = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_MAC),
+ WX_PTYPE_L2_TS = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_TS),
+ WX_PTYPE_L2_FIP = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_FIP),
+ WX_PTYPE_L2_LLDP = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_LLDP),
+ WX_PTYPE_L2_CNM = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_CNM),
+ WX_PTYPE_L2_EAPOL = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_EAPOL),
+ WX_PTYPE_L2_ARP = (WX_PTYPE_PKT_MAC | WX_PTYPE_TYP_ARP),
+ WX_PTYPE_L2_IPV4_FRAG = (WX_PTYPE_PKT_IP | WX_PTYPE_TYP_IPFRAG),
+ WX_PTYPE_L2_IPV4 = (WX_PTYPE_PKT_IP | WX_PTYPE_TYP_IP),
+ WX_PTYPE_L2_IPV4_UDP = (WX_PTYPE_PKT_IP | WX_PTYPE_TYP_UDP),
+ WX_PTYPE_L2_IPV4_TCP = (WX_PTYPE_PKT_IP | WX_PTYPE_TYP_TCP),
+ WX_PTYPE_L2_IPV4_SCTP = (WX_PTYPE_PKT_IP | WX_PTYPE_TYP_SCTP),
+ WX_PTYPE_L2_IPV6_FRAG = (WX_PTYPE_PKT_IP |
+ WX_PTYPE_PKT_IPV6 |
+ WX_PTYPE_TYP_IPFRAG),
+ WX_PTYPE_L2_IPV6 = (WX_PTYPE_PKT_IP |
+ WX_PTYPE_PKT_IPV6 |
+ WX_PTYPE_TYP_IP),
+ WX_PTYPE_L2_IPV6_UDP = (WX_PTYPE_PKT_IP |
+ WX_PTYPE_PKT_IPV6 |
+ WX_PTYPE_TYP_UDP),
+ WX_PTYPE_L2_IPV6_TCP = (WX_PTYPE_PKT_IP |
+ WX_PTYPE_PKT_IPV6 |
+ WX_PTYPE_TYP_TCP),
+ WX_PTYPE_L2_IPV6_SCTP = (WX_PTYPE_PKT_IP |
+ WX_PTYPE_PKT_IPV6 |
+ WX_PTYPE_TYP_SCTP),
+ WX_PTYPE_L2_FCOE = (WX_PTYPE_PKT_FCOE | WX_PTYPE_TYP_FCOE),
+ WX_PTYPE_L2_FCOE_FCDATA = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_TYP_FCDATA),
+ WX_PTYPE_L2_FCOE_FCRDY = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_TYP_FCRDY),
+ WX_PTYPE_L2_FCOE_FCRSP = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_TYP_FCRSP),
+ WX_PTYPE_L2_FCOE_FCOTHER = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_TYP_FCOTHER),
+ WX_PTYPE_L2_FCOE_VFT = (WX_PTYPE_PKT_FCOE | WX_PTYPE_PKT_VFT),
+ WX_PTYPE_L2_FCOE_VFT_FCDATA = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_PKT_VFT |
+ WX_PTYPE_TYP_FCDATA),
+ WX_PTYPE_L2_FCOE_VFT_FCRDY = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_PKT_VFT |
+ WX_PTYPE_TYP_FCRDY),
+ WX_PTYPE_L2_FCOE_VFT_FCRSP = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_PKT_VFT |
+ WX_PTYPE_TYP_FCRSP),
+ WX_PTYPE_L2_FCOE_VFT_FCOTHER = (WX_PTYPE_PKT_FCOE |
+ WX_PTYPE_PKT_VFT |
+ WX_PTYPE_TYP_FCOTHER),
+ WX_PTYPE_L2_TUN4_MAC = (WX_PTYPE_TUN_IPV4 | WX_PTYPE_PKT_IGM),
+ WX_PTYPE_L2_TUN6_MAC = (WX_PTYPE_TUN_IPV6 | WX_PTYPE_PKT_IGM),
+};
+
/*********************** Transmit Descriptor Config Masks ****************/
#define WX_TXD_STAT_DD BIT(0) /* Descriptor Done */
#define WX_TXD_DTYP_DATA 0 /* Adv Data Descriptor */
@@ -334,6 +430,81 @@
#define WX_TXD_IFCS BIT(25) /* Insert FCS */
#define WX_TXD_RS BIT(27) /* Report Status */
+/*********************** Adv Transmit Descriptor Config Masks ****************/
+#define WX_TXD_DTALEN_MASK U16_MAX /* Data buf length(bytes) */
+#define WX_TXD_MAC_LINKSEC BIT(18) /* Insert LinkSec */
+#define WX_TXD_MAC_TSTAMP BIT(19) /* IEEE1588 time stamp */
+#define WX_TXD_IPSEC_SA_INDEX_MASK GENMASK(9, 0) /* IPSec SA index */
+#define WX_TXD_IPSEC_ESP_LEN_MASK GENMASK(8, 0) /* IPSec ESP length */
+#define WX_TXD_DTYP_MASK GENMASK(23, 20) /* DTYP mask */
+#define WX_TXD_DTYP_CTXT BIT(20) /* Adv Context Desc */
+#define WX_TXD_EOP BIT(24) /* End of Packet */
+#define WX_TXD_IFCS BIT(25) /* Insert FCS */
+#define WX_TXD_LINKSEC BIT(26) /* enable linksec */
+#define WX_TXD_RS BIT(27) /* Report Status */
+#define WX_TXD_ECU BIT(28) /* DDP hdr type or iSCSI */
+#define WX_TXD_QCN BIT(29) /* cntag insertion enable */
+#define WX_TXD_VLE BIT(30) /* VLAN pkt enable */
+#define WX_TXD_TSE BIT(31) /* TCP Seg enable */
+#define WX_TXD_STAT_DD BIT(0) /* Descriptor Done */
+#define WX_TXD_IDX_SHIFT 4 /* Adv desc Index shift */
+#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_VLAN_SHIFT 16 /* Adv ctxt vlan tag shift */
+#define WX_TXD_TAG_TPID_SEL_SHIFT 11
+#define WX_TXD_IPSEC_TYPE_SHIFT 14
+#define WX_TXD_ENC_SHIFT 15
+
+#define WX_TXD_TUCMD_IPSEC_TYPE_ESP BIT(14) /* IPSec Type ESP */
+#define WX_TXD_TUCMD_IPSEC_ENCRYPT_EN BIT(15)/* ESP Encrypt Enable */
+#define WX_TXD_TUCMD_FCOE BIT(16) /* FCoE Frame Type */
+#define WX_TXD_FCOEF_EOF_MASK GENMASK(11, 10) /* FC EOF index */
+#define WX_TXD_FCOEF_SOF BIT(12) /* FC SOF index */
+#define WX_TXD_FCOEF_PARINC BIT(13) /* Rel_Off in F_CTL */
+#define WX_TXD_FCOEF_ORIE BIT(14) /* Orientation End */
+#define WX_TXD_FCOEF_ORIS BIT(15) /* Orientation Start */
+#define WX_TXD_FCOEF_EOF_N FIELD_PREP(WX_TXD_FCOEF_EOF_MASK, 0) /* 00: EOFn */
+#define WX_TXD_FCOEF_EOF_T FIELD_PREP(WX_TXD_FCOEF_EOF_MASK, 1) /* 01: EOFt */
+#define WX_TXD_FCOEF_EOF_NI FIELD_PREP(WX_TXD_FCOEF_EOF_MASK, 2) /* 10: EOFni */
+#define WX_TXD_FCOEF_EOF_A FIELD_PREP(WX_TXD_FCOEF_EOF_MASK, 3) /* 11: EOFa */
+#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_DECTTL_SHIFT 27 /* Adv ctxt DECTTL 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,
+
+ /* software defined flags */
+ WX_TX_FLAGS_SW_VLAN = 0x40,
+ WX_TX_FLAGS_FCOE = 0x80,
+};
+
+/* 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;
@@ -412,6 +583,8 @@ 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;
@@ -456,6 +629,11 @@ enum wx_reset_type {
struct wx_cb {
dma_addr_t dma;
+ __be32 tsecr; /* timestamp echo response */
+ u32 tsval; /* timestamp value in host order */
+ u32 next_seq; /* next expected sequence number */
+ u16 free; /* 65521 minus total size */
+ u16 mss; /* size of data portion of packet */
u16 append_cnt; /* number of skb's appended */
bool page_released;
bool dma_released;
@@ -508,10 +686,24 @@ 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;
+};
+
+#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 +715,8 @@ 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 {
@@ -539,6 +733,22 @@ struct wx_queue_stats {
u64 bytes;
};
+struct wx_tx_queue_stats {
+ u64 restart_queue;
+ u64 tx_busy;
+ u64 tx_done_old;
+};
+
+struct wx_rx_queue_stats {
+ u64 rsc_count;
+ u64 rsc_flush;
+ u64 non_eop_descs;
+ u64 alloc_rx_page_failed;
+ u64 alloc_rx_buff_failed;
+ 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)
@@ -551,11 +761,20 @@ struct wx_ring_container {
u8 itr; /* current ITR setting for ring */
};
+struct wx_fwd_adapter {
+ struct net_device *vdev;
+ struct wx *wx;
+ unsigned int tx_base_queue;
+ unsigned int rx_base_queue;
+ int index; /* pool index on PF */
+};
+
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 */
struct net_device *netdev; /* netdev ring belongs to */
struct device *dev; /* device for DMA mapping */
+ struct wx_fwd_adapter *accel;
struct page_pool *page_pool;
void *desc; /* descriptor ring memory */
union {
@@ -580,6 +799,9 @@ struct wx_ring {
struct wx_queue_stats stats;
struct u64_stats_sync syncp;
+ union {
+ struct wx_tx_queue_stats tx_stats;
+ };
} ____cacheline_internodealigned_in_smp;
struct wx_q_vector {
diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
index 69e0457eb200..ac0f71e6db5c 100644
--- a/include/uapi/linux/if_ether.h
+++ b/include/uapi/linux/if_ether.h
@@ -48,6 +48,7 @@
#define ETH_P_PUP 0x0200 /* Xerox PUP packet */
#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */
#define ETH_P_TSN 0x22F0 /* TSN (IEEE 1722) packet */
+#define ETH_P_CNM 0x22E7 /* Congestion Notification Message packet */
#define ETH_P_ERSPAN2 0x22EB /* ERSPAN version 2 (type III) */
#define ETH_P_IP 0x0800 /* Internet Protocol packet */
#define ETH_P_X25 0x0805 /* CCITT X.25 */
--
2.40.0
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