The GbEth IP supports offloading IPv6 TCP, UDP & ICMPv6 checksums in the
TX path.
Signed-off-by: Paul Barker <paul.barker.ct@xxxxxxxxxxxxxx>
---
drivers/net/ethernet/renesas/ravb.h | 2 +-
drivers/net/ethernet/renesas/ravb_main.c | 15 +++++++++++----
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index e1e55e677215..d7b3810ce21b 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -998,7 +998,7 @@ enum CSR1_BIT {
CSR1_TDHD = 0x08000000,
};
-#define CSR1_CSUM_ENABLE (CSR1_TTCP4 | CSR1_TUDP4)
+#define CSR1_CSUM_ENABLE (CSR1_TTCP4 | CSR1_TUDP4 | CSR1_TTCP6 | CSR1_TUDP6)
enum CSR2_BIT {
CSR2_RIP4 = 0x00000001,
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 80c0d36bffcb..14b4462331b0 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2063,17 +2063,24 @@ static void ravb_tx_timeout_work(struct work_struct *work)
static bool ravb_can_tx_csum_gbeth(struct sk_buff *skb)
{
- struct iphdr *ip = ip_hdr(skb);
+ u8 inner_protocol;
/* TODO: Need to add support for VLAN tag 802.1Q */
if (skb_vlan_tag_present(skb))
return false;
- /* TODO: Need to add hardware checksum for IPv6 */
- if (skb->protocol != htons(ETH_P_IP))
+ switch (ntohs(skb->protocol)) {
+ case ETH_P_IP:
+ inner_protocol = ip_hdr(skb)->protocol;
+ break;
+ case ETH_P_IPV6:
+ inner_protocol = ipv6_hdr(skb)->nexthdr;
+ break;
+ default:
return false;
+ }
- switch (ip->protocol) {
+ switch (inner_protocol) {
case IPPROTO_TCP:
case IPPROTO_UDP:
return true;
--
2.43.0
