| Message ID | 20241015133634.193-10-paul.barker.ct@bp.renesas.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | Extend GbEth checksum offload support to VLAN/IPv6 packets | expand |
On 10/15/24 4:36 PM, Paul Barker wrote: > 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> [...] MBR, Sergey
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;
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> --- drivers/net/ethernet/renesas/ravb.h | 2 +- drivers/net/ethernet/renesas/ravb_main.c | 15 +++++++++++---- 2 files changed, 12 insertions(+), 5 deletions(-)