diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-04-12 05:27:01 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-12 16:17:00 +0200 |
| commit | 05690d633f309d7369176754f7362e979c5710a6 (patch) | |
| tree | 01521596dda53bfdda945b2c69edbd288128c4f2 /drivers/net/ethernet | |
| parent | Merge branch 'net-smc-next' (diff) | |
| download | linux-05690d633f309d7369176754f7362e979c5710a6.tar.xz linux-05690d633f309d7369176754f7362e979c5710a6.zip | |
ftgmac100: Upgrade to NETIF_F_HW_CSUM
The documentation describes NETIF_F_IP_CSUM as deprecated
so let's switch to NETIF_F_HW_CSUM and use the helper to
handle unhandled protocols.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 7156f9ff6b7e..3994a8307c08 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -572,6 +572,26 @@ static void ftgmac100_tx_complete(struct ftgmac100 *priv) } } +static bool ftgmac100_prep_tx_csum(struct sk_buff *skb, u32 *csum_vlan) +{ + if (skb->protocol == cpu_to_be16(ETH_P_IP)) { + u8 ip_proto = ip_hdr(skb)->protocol; + + *csum_vlan |= FTGMAC100_TXDES1_IP_CHKSUM; + switch(ip_proto) { + case IPPROTO_TCP: + *csum_vlan |= FTGMAC100_TXDES1_TCP_CHKSUM; + return true; + case IPPROTO_UDP: + *csum_vlan |= FTGMAC100_TXDES1_UDP_CHKSUM; + return true; + case IPPROTO_IP: + return true; + } + } + return skb_checksum_help(skb) == 0; +} + static int ftgmac100_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev) { @@ -628,19 +648,9 @@ static int ftgmac100_hard_start_xmit(struct sk_buff *skb, /* Setup HW checksumming */ csum_vlan = 0; - if (skb->ip_summed == CHECKSUM_PARTIAL) { - __be16 protocol = skb->protocol; - - if (protocol == cpu_to_be16(ETH_P_IP)) { - u8 ip_proto = ip_hdr(skb)->protocol; - - csum_vlan |= FTGMAC100_TXDES1_IP_CHKSUM; - if (ip_proto == IPPROTO_TCP) - csum_vlan |= FTGMAC100_TXDES1_TCP_CHKSUM; - else if (ip_proto == IPPROTO_UDP) - csum_vlan |= FTGMAC100_TXDES1_UDP_CHKSUM; - } - } + if (skb->ip_summed == CHECKSUM_PARTIAL && + !ftgmac100_prep_tx_csum(skb, &csum_vlan)) + goto drop; txdes->txdes1 = cpu_to_le32(csum_vlan); /* Next descriptor */ @@ -1465,11 +1475,11 @@ static int ftgmac100_probe(struct platform_device *pdev) * when NCSI is enabled on the interface. It doesn't work * in that case. */ - netdev->features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM | + netdev->features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM | NETIF_F_GRO | NETIF_F_SG; if (priv->use_ncsi && of_get_property(pdev->dev.of_node, "no-hw-checksum", NULL)) - netdev->features &= ~NETIF_F_IP_CSUM; + netdev->features &= ~NETIF_F_HW_CSUM; /* register network device */ err = register_netdev(netdev); |