diff options
| author |   Gatis Peisenieks <gatis@mikrotik.com> | 2021-05-13 14:43:25 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-05-13 15:48:10 -0700 |
| commit | b0390009502b0c635f9ddc26a16025268f6c6211 (patch) | |
| tree | 08d7790392ba8595228699e1c5e65caddccc1e17 | |
| parent | atl1c: adjust max mtu according to Mikrotik 10/25G NIC ability (diff) | |
| download | linux-dev-b0390009502b0c635f9ddc26a16025268f6c6211.tar.xz linux-dev-b0390009502b0c635f9ddc26a16025268f6c6211.zip | |
atl1c: enable rx csum offload on Mikrotik 10/25G NIC
Mikrotik 10/25G NIC supports hw checksum verification on rx for
IP/IPv6 + TCP/UDP packets. HW checksum offload helps reduce host
cpu load.
This enables the csum offload specifically for Mikrotik 10/25G NIC
as other HW supported by the driver is known to have problems with it.
TCP iperf3 to Threadripper 3960X with NIC improved 16.5 -> 20.0 Gbps
with mtu=1500.
Signed-off-by: Gatis Peisenieks <gatis@mikrotik.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/atheros/atl1c/atl1c.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 5 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c.h b/drivers/net/ethernet/atheros/atl1c/atl1c.h index 3fda7eb3bd69..9d70cb7544f1 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c.h +++ b/drivers/net/ethernet/atheros/atl1c/atl1c.h @@ -241,6 +241,8 @@ struct atl1c_tpd_ext_desc { #define RRS_PACKET_PROT_IS_IPV6_ONLY(word) \ ((((word) >> RRS_PROT_ID_SHIFT) & RRS_PROT_ID_MASK) == 6) +#define RRS_MT_PROT_ID_TCPUDP BIT(19) + struct atl1c_recv_ret_status { __le32 word0; __le32 rss_hash; diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c index dbafd8118a86..9693da5028cf 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c @@ -1671,6 +1671,11 @@ static irqreturn_t atl1c_intr(int irq, void *data) static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) { + if (adapter->hw.nic_type == athr_mt) { + if (prrs->word3 & RRS_MT_PROT_ID_TCPUDP) + skb->ip_summed = CHECKSUM_UNNECESSARY; + return; + } /* * The pid field in RRS in not correct sometimes, so we * cannot figure out if the packet is fragmented or not, |