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[BNX2]: Add ipv6 TSO and checksum for 5709.
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Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Michael Chan authored and David S. Miller committed May 3, 2007
1 parent 874bb67 commit 4666f87
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Showing 2 changed files with 67 additions and 28 deletions.
91 changes: 63 additions & 28 deletions drivers/net/bnx2.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4537,35 +4537,49 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
u32 tcp_opt_len, ip_tcp_len;
struct iphdr *iph;

if (skb_header_cloned(skb) &&
pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}

vlan_tag_flags |= TX_BD_FLAGS_SW_LSO;

tcp_opt_len = 0;
if (tcp_hdr(skb)->doff > 5)
tcp_opt_len = tcp_optlen(skb);
tcp_opt_len = tcp_optlen(skb);

if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) {
u32 tcp_off = skb_transport_offset(skb) -
sizeof(struct ipv6hdr) - ETH_HLEN;

ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr);
vlan_tag_flags |= ((tcp_opt_len >> 2) << 8) |
TX_BD_FLAGS_SW_FLAGS;
if (likely(tcp_off == 0))
vlan_tag_flags &= ~TX_BD_FLAGS_TCP6_OFF0_MSK;
else {
tcp_off >>= 3;
vlan_tag_flags |= ((tcp_off & 0x3) <<
TX_BD_FLAGS_TCP6_OFF0_SHL) |
((tcp_off & 0x10) <<
TX_BD_FLAGS_TCP6_OFF4_SHL);
mss |= (tcp_off & 0xc) << TX_BD_TCP6_OFF2_SHL;
}
} else {
if (skb_header_cloned(skb) &&
pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}

iph = ip_hdr(skb);
iph->check = 0;
iph->tot_len = htons(mss + ip_tcp_len + tcp_opt_len);
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
iph->daddr, 0,
IPPROTO_TCP, 0);
if (tcp_opt_len || (iph->ihl > 5)) {
vlan_tag_flags |= ((iph->ihl - 5) +
(tcp_opt_len >> 2)) << 8;
ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr);

iph = ip_hdr(skb);
iph->check = 0;
iph->tot_len = htons(mss + ip_tcp_len + tcp_opt_len);
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
iph->daddr, 0,
IPPROTO_TCP,
0);
if (tcp_opt_len || (iph->ihl > 5)) {
vlan_tag_flags |= ((iph->ihl - 5) +
(tcp_opt_len >> 2)) << 8;
}
}
}
else
{
} else
mss = 0;
}

mapping = pci_map_single(bp->pdev, skb->data, len, PCI_DMA_TODEVICE);

Expand Down Expand Up @@ -5233,10 +5247,15 @@ bnx2_set_rx_csum(struct net_device *dev, u32 data)
static int
bnx2_set_tso(struct net_device *dev, u32 data)
{
if (data)
struct bnx2 *bp = netdev_priv(dev);

if (data) {
dev->features |= NETIF_F_TSO | NETIF_F_TSO_ECN;
else
dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO_ECN);
if (CHIP_NUM(bp) == CHIP_NUM_5709)
dev->features |= NETIF_F_TSO6;
} else
dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_TSO_ECN);
return 0;
}

Expand Down Expand Up @@ -5534,6 +5553,17 @@ bnx2_phys_id(struct net_device *dev, u32 data)
return 0;
}

static int
bnx2_set_tx_csum(struct net_device *dev, u32 data)
{
struct bnx2 *bp = netdev_priv(dev);

if (CHIP_NUM(bp) == CHIP_NUM_5709)
return (ethtool_op_set_tx_hw_csum(dev, data));
else
return (ethtool_op_set_tx_csum(dev, data));
}

static const struct ethtool_ops bnx2_ethtool_ops = {
.get_settings = bnx2_get_settings,
.set_settings = bnx2_set_settings,
Expand All @@ -5556,7 +5586,7 @@ static const struct ethtool_ops bnx2_ethtool_ops = {
.get_rx_csum = bnx2_get_rx_csum,
.set_rx_csum = bnx2_set_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = ethtool_op_set_tx_csum,
.set_tx_csum = bnx2_set_tx_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
Expand Down Expand Up @@ -6094,11 +6124,16 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
memcpy(dev->perm_addr, bp->mac_addr, 6);
bp->name = board_info[ent->driver_data].name;

dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
if (CHIP_NUM(bp) == CHIP_NUM_5709)
dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
else
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
#ifdef BCM_VLAN
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
#endif
dev->features |= NETIF_F_TSO | NETIF_F_TSO_ECN;
if (CHIP_NUM(bp) == CHIP_NUM_5709)
dev->features |= NETIF_F_TSO6;

if ((rc = register_netdev(dev))) {
dev_err(&pdev->dev, "Cannot register net device\n");
Expand Down
4 changes: 4 additions & 0 deletions drivers/net/bnx2.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,11 @@ struct tx_bd {
u32 tx_bd_haddr_hi;
u32 tx_bd_haddr_lo;
u32 tx_bd_mss_nbytes;
#define TX_BD_TCP6_OFF2_SHL (14)
u32 tx_bd_vlan_tag_flags;
#define TX_BD_FLAGS_CONN_FAULT (1<<0)
#define TX_BD_FLAGS_TCP6_OFF0_MSK (3<<1)
#define TX_BD_FLAGS_TCP6_OFF0_SHL (1)
#define TX_BD_FLAGS_TCP_UDP_CKSUM (1<<1)
#define TX_BD_FLAGS_IP_CKSUM (1<<2)
#define TX_BD_FLAGS_VLAN_TAG (1<<3)
Expand All @@ -34,6 +37,7 @@ struct tx_bd {
#define TX_BD_FLAGS_END (1<<6)
#define TX_BD_FLAGS_START (1<<7)
#define TX_BD_FLAGS_SW_OPTION_WORD (0x1f<<8)
#define TX_BD_FLAGS_TCP6_OFF4_SHL (12)
#define TX_BD_FLAGS_SW_FLAGS (1<<13)
#define TX_BD_FLAGS_SW_SNAP (1<<14)
#define TX_BD_FLAGS_SW_LSO (1<<15)
Expand Down

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