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be2net: csum, tso and rss steering offload support for VxLAN 

This patch mainly implements the add/del_vxlan_port() methods by invoking
the needed FW cmds for supporting VxLAN offloads for Skyhawk-R.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sathya Perla 2014-03-27 10:46:19 +05:30 committed by David S. Miller
parent a401801c6e
commit c9c47142f6
3 changed files with 125 additions and 9 deletions
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7
drivers/net/ethernet/emulex/benet/be.h
View File

@ -296,6 +296,7 @@ struct be_rx_compl_info {
u8 qnq;
u8 pkt_type;
u8 ip_frag;
u8 tunneled;
};
struct be_rx_obj {
@ -371,10 +372,11 @@ enum vf_state {
#define BE_FLAGS_WORKER_SCHEDULED (1 << 3)
#define BE_FLAGS_VLAN_PROMISC (1 << 4)
#define BE_FLAGS_NAPI_ENABLED (1 << 9)
#define BE_UC_PMAC_COUNT 30
#define BE_VF_UC_PMAC_COUNT 2
#define BE_FLAGS_QNQ_ASYNC_EVT_RCVD (1 << 11)
#define BE_FLAGS_VXLAN_OFFLOADS (1 << 12)
#define BE_UC_PMAC_COUNT 30
#define BE_VF_UC_PMAC_COUNT 2
/* Ethtool set_dump flags */
#define LANCER_INITIATE_FW_DUMP 0x1
@ -494,6 +496,7 @@ struct be_adapter {
u32 sli_family;
u8 hba_port_num;
u16 pvid;
__be16 vxlan_port;
struct phy_info phy;
u8 wol_cap;
bool wol_en;

3
drivers/net/ethernet/emulex/benet/be_hw.h
View File

@ -407,7 +407,8 @@ struct amap_eth_rx_compl_v1 {
u8 vntagp; /* dword 2 */
u8 header_len[8]; /* dword 2 */
u8 header_split[2]; /* dword 2 */
u8 rsvd1[13]; /* dword 2 */
u8 rsvd1[12]; /* dword 2 */
u8 tunneled;
u8 valid; /* dword 2 */
u8 rsshash[32]; /* dword 3 */
} __packed;

124
drivers/net/ethernet/emulex/benet/be_main.c
View File

@ -23,6 +23,7 @@
#include <linux/aer.h>
#include <linux/if_bridge.h>
#include <net/busy_poll.h>
#include <net/vxlan.h>
MODULE_VERSION(DRV_VER);
MODULE_DEVICE_TABLE(pci, be_dev_ids);
@ -718,10 +719,23 @@ static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
return vlan_tag;
}
/* Used only for IP tunnel packets */
static u16 skb_inner_ip_proto(struct sk_buff *skb)
{
return (inner_ip_hdr(skb)->version == 4) ?
inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
}
static u16 skb_ip_proto(struct sk_buff *skb)
{
return (ip_hdr(skb)->version == 4) ?
ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
}
static void wrb_fill_hdr(struct be_adapter *adapter, struct be_eth_hdr_wrb *hdr,
struct sk_buff *skb, u32 wrb_cnt, u32 len, bool skip_hw_vlan)
{
u16 vlan_tag;
u16 vlan_tag, proto;
memset(hdr, 0, sizeof(*hdr));
@ -734,9 +748,15 @@ static void wrb_fill_hdr(struct be_adapter *adapter, struct be_eth_hdr_wrb *hdr,
if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso6, hdr, 1);
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
if (is_tcp_pkt(skb))
if (skb->encapsulation) {
AMAP_SET_BITS(struct amap_eth_hdr_wrb, ipcs, hdr, 1);
proto = skb_inner_ip_proto(skb);
} else {
proto = skb_ip_proto(skb);
}
if (proto == IPPROTO_TCP)
AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
else if (is_udp_pkt(skb))
else if (proto == IPPROTO_UDP)
AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
}
@ -1467,9 +1487,10 @@ static void be_rx_stats_update(struct be_rx_obj *rxo,
static inline bool csum_passed(struct be_rx_compl_info *rxcp)
{
/* L4 checksum is not reliable for non TCP/UDP packets.
* Also ignore ipcksm for ipv6 pkts */
* Also ignore ipcksm for ipv6 pkts
*/
return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
(rxcp->ip_csum || rxcp->ipv6);
(rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
}
static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
@ -1612,6 +1633,8 @@ static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
if (netdev->features & NETIF_F_RXHASH)
skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
skb->encapsulation = rxcp->tunneled;
skb_mark_napi_id(skb, napi);
if (rxcp->vlanf)
@ -1668,6 +1691,8 @@ static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
if (adapter->netdev->features & NETIF_F_RXHASH)
skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
skb->encapsulation = rxcp->tunneled;
skb_mark_napi_id(skb, napi);
if (rxcp->vlanf)
@ -1704,6 +1729,8 @@ static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
compl);
}
rxcp->port = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, port, compl);
rxcp->tunneled =
AMAP_GET_BITS(struct amap_eth_rx_compl_v1, tunneled, compl);
}
static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
@ -2834,6 +2861,9 @@ static int be_open(struct net_device *netdev)
netif_tx_start_all_queues(netdev);
be_roce_dev_open(adapter);
if (skyhawk_chip(adapter))
vxlan_get_rx_port(netdev);
return 0;
err:
be_close(adapter->netdev);
@ -2989,6 +3019,19 @@ static void be_mac_clear(struct be_adapter *adapter)
}
}
static void be_disable_vxlan_offloads(struct be_adapter *adapter)
{
if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
be_cmd_manage_iface(adapter, adapter->if_handle,
OP_CONVERT_TUNNEL_TO_NORMAL);
if (adapter->vxlan_port)
be_cmd_set_vxlan_port(adapter, 0);
adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
adapter->vxlan_port = 0;
}
static int be_clear(struct be_adapter *adapter)
{
be_cancel_worker(adapter);
@ -2996,6 +3039,8 @@ static int be_clear(struct be_adapter *adapter)
if (sriov_enabled(adapter))
be_vf_clear(adapter);
be_disable_vxlan_offloads(adapter);
/* delete the primary mac along with the uc-mac list */
be_mac_clear(adapter);
@ -4120,6 +4165,65 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB);
}
static void be_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
__be16 port)
{
struct be_adapter *adapter = netdev_priv(netdev);
struct device *dev = &adapter->pdev->dev;
int status;
if (lancer_chip(adapter) || BEx_chip(adapter))
return;
if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) {
dev_warn(dev, "Cannot add UDP port %d for VxLAN offloads\n",
be16_to_cpu(port));
dev_info(dev,
"Only one UDP port supported for VxLAN offloads\n");
return;
}
status = be_cmd_manage_iface(adapter, adapter->if_handle,
OP_CONVERT_NORMAL_TO_TUNNEL);
if (status) {
dev_warn(dev, "Failed to convert normal interface to tunnel\n");
goto err;
}
status = be_cmd_set_vxlan_port(adapter, port);
if (status) {
dev_warn(dev, "Failed to add VxLAN port\n");
goto err;
}
adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
adapter->vxlan_port = port;
dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
be16_to_cpu(port));
return;
err:
be_disable_vxlan_offloads(adapter);
return;
}
static void be_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
__be16 port)
{
struct be_adapter *adapter = netdev_priv(netdev);
if (lancer_chip(adapter) || BEx_chip(adapter))
return;
if (adapter->vxlan_port != port)
return;
be_disable_vxlan_offloads(adapter);
dev_info(&adapter->pdev->dev,
"Disabled VxLAN offloads for UDP port %d\n",
be16_to_cpu(port));
}
static const struct net_device_ops be_netdev_ops = {
.ndo_open = be_open,
.ndo_stop = be_close,
@ -4142,14 +4246,22 @@ static const struct net_device_ops be_netdev_ops = {
.ndo_bridge_setlink = be_ndo_bridge_setlink,
.ndo_bridge_getlink = be_ndo_bridge_getlink,
#ifdef CONFIG_NET_RX_BUSY_POLL
.ndo_busy_poll = be_busy_poll
.ndo_busy_poll = be_busy_poll,
#endif
.ndo_add_vxlan_port = be_add_vxlan_port,
.ndo_del_vxlan_port = be_del_vxlan_port,
};
static void be_netdev_init(struct net_device *netdev)
{
struct be_adapter *adapter = netdev_priv(netdev);
if (skyhawk_chip(adapter)) {
netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_GSO_UDP_TUNNEL;
netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
}
netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
NETIF_F_HW_VLAN_CTAG_TX;