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net: ravb: Enable IPv6 TX checksum offload for GbEth

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The GbEth IP supports offloading IPv6 TCP, UDP & ICMPv6 checksums in the
TX path.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
This commit is contained in:
Paul Barker
2024-10-15 14:36:33 +01:00
committed by Andrew Lunn
parent 59cceae40c
commit 85c1715098
2 changed files with 12 additions and 5 deletions
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2
drivers/net/ethernet/renesas/ravb.h
View File

@@ -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,

15
drivers/net/ethernet/renesas/ravb_main.c
View File

@@ -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;