From: Edward Cree <ecree@solarflare.com>
To: <linux-net-drivers@solarflare.com>, <kuba@kernel.org>
Cc: <davem@davemloft.net>, <netdev@vger.kernel.org>
Subject: [PATCH net-next 2/3] sfc: correctly support non-partial GSO_UDP_TUNNEL_CSUM on EF100
Date: Thu, 12 Nov 2020 15:19:47 +0000 [thread overview]
Message-ID: <6c770e62-231c-6c98-d850-820a9c9a1012@solarflare.com> (raw)
In-Reply-To: <eda2de73-edf2-8b92-edb9-099ebda09ebc@solarflare.com>
By asking the HW for the correct edits, we can make UDP tunnel TSO
work without needing GSO_PARTIAL. So don't specify it in our
netdev->gso_partial_features.
However, retain GSO_PARTIAL support, as this will be used for other
protocols later.
Signed-off-by: Edward Cree <ecree@solarflare.com>
---
drivers/net/ethernet/sfc/ef100_nic.c | 1 -
drivers/net/ethernet/sfc/ef100_tx.c | 6 +++++-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index cd93c5ffd45c..05d22220228a 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -190,7 +190,6 @@ static int efx_ef100_init_datapath_caps(struct efx_nic *efx)
net_dev->features |= tso;
net_dev->hw_features |= tso;
net_dev->hw_enc_features |= tso;
- net_dev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM;
}
efx->num_mac_stats = MCDI_WORD(outbuf,
GET_CAPABILITIES_V4_OUT_MAC_STATS_NUM_STATS);
diff --git a/drivers/net/ethernet/sfc/ef100_tx.c b/drivers/net/ethernet/sfc/ef100_tx.c
index ad0ad9bad423..a9e045c54a79 100644
--- a/drivers/net/ethernet/sfc/ef100_tx.c
+++ b/drivers/net/ethernet/sfc/ef100_tx.c
@@ -196,6 +196,7 @@ static void ef100_make_tso_desc(struct efx_nic *efx,
bool encap = skb->encapsulation;
u16 vlan_enable = 0;
struct tcphdr *tcp;
+ bool outer_csum;
u32 paylen;
if (skb_shinfo(skb)->gso_type & SKB_GSO_TCP_FIXEDID)
@@ -216,19 +217,21 @@ static void ef100_make_tso_desc(struct efx_nic *efx,
tcp_offset = skb_transport_offset(skb);
outer_ip_offset = outer_l4_offset = 0;
}
+ outer_csum = skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM;
/* subtract TCP payload length from inner checksum */
tcp = (void *)skb->data + tcp_offset;
paylen = skb->len - tcp_offset;
csum_replace_by_diff(&tcp->check, (__force __wsum)htonl(paylen));
- EFX_POPULATE_OWORD_17(*txd,
+ EFX_POPULATE_OWORD_19(*txd,
ESF_GZ_TX_DESC_TYPE, ESE_GZ_TX_DESC_TYPE_TSO,
ESF_GZ_TX_TSO_MSS, mss,
ESF_GZ_TX_TSO_HDR_NUM_SEGS, 1,
ESF_GZ_TX_TSO_PAYLOAD_NUM_SEGS, payload_segs,
ESF_GZ_TX_TSO_HDR_LEN_W, buffer->len >> 1,
ESF_GZ_TX_TSO_PAYLOAD_LEN, len,
+ ESF_GZ_TX_TSO_CSO_OUTER_L4, outer_csum,
ESF_GZ_TX_TSO_CSO_INNER_L4, 1,
ESF_GZ_TX_TSO_INNER_L3_OFF_W, ip_offset >> 1,
ESF_GZ_TX_TSO_INNER_L4_OFF_W, tcp_offset >> 1,
@@ -237,6 +240,7 @@ static void ef100_make_tso_desc(struct efx_nic *efx,
ESF_GZ_TX_TSO_OUTER_L3_OFF_W, outer_ip_offset >> 1,
ESF_GZ_TX_TSO_OUTER_L4_OFF_W, outer_l4_offset >> 1,
ESF_GZ_TX_TSO_ED_OUTER_UDP_LEN, encap && !gso_partial,
+ ESF_GZ_TX_TSO_ED_OUTER_IP_LEN, encap && !gso_partial,
ESF_GZ_TX_TSO_ED_OUTER_IP4_ID, encap ? mangleid :
ESE_GZ_TX_DESC_IP4_ID_NO_OP,
ESF_GZ_TX_TSO_VLAN_INSERT_EN, vlan_enable,
next prev parent reply other threads:[~2020-11-12 15:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-12 15:18 [PATCH net-next 0/3] sfc: further EF100 encap TSO features Edward Cree
2020-11-12 15:19 ` [PATCH net-next 1/3] sfc: extend bitfield macros to 19 fields Edward Cree
2020-11-13 19:06 ` Alexander Duyck
2020-11-16 12:26 ` Edward Cree
2020-11-16 16:41 ` Alexander Duyck
2020-11-12 15:19 ` Edward Cree [this message]
2020-11-12 15:20 ` [PATCH net-next 3/3] sfc: support GRE TSO on EF100 Edward Cree
2020-11-13 10:06 ` [PATCH net-next 0/3] sfc: further EF100 encap TSO features Martin Habets
2020-11-13 19:09 ` Alexander Duyck
2020-11-13 23:40 ` patchwork-bot+netdevbpf
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