[dpdk-dev] [PATCH 13/14] net/sfc: support inner checksum offload on transmit

[Andrew Rybchenko <arybchenko@solarflare.com>]

There is no dedicated controls for inner checksum offload on
device/queue level. So, enable together with outer offloads.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>
---
 doc/guides/nics/sfc_efx.rst  | 2 ++
 drivers/net/sfc/sfc_ethdev.c | 3 +++
 drivers/net/sfc/sfc_tx.c     | 8 ++++++++
 3 files changed, 13 insertions(+)

diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index 813cb6f..8e0782c 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -48,6 +48,8 @@ SFC EFX PMD has support for:
 
 - IPv4/IPv6 TCP/UDP transmit checksum offload
 
+- Inner IPv4/IPv6 TCP/UDP transmit checksum offload
+
 - Port hardware statistics
 
 - Extended statistics (see Solarflare Server Adapter User's Guide for
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 0fea997..1b700b1 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -140,6 +140,9 @@ sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 		DEV_TX_OFFLOAD_UDP_CKSUM |
 		DEV_TX_OFFLOAD_TCP_CKSUM;
 
+	if (encp->enc_tunnel_encapsulations_supported != 0)
+		dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM;
+
 	dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOXSUMSCTP;
 	if ((~sa->dp_tx->features & SFC_DP_TX_FEAT_VLAN_INSERT) ||
 	    !encp->enc_hw_tx_insert_vlan_enabled)
diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index d1320f4..f580fb5 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -410,6 +410,7 @@ sfc_tx_close(struct sfc_adapter *sa)
 int
 sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index)
 {
+	const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
 	struct rte_eth_dev_data *dev_data;
 	struct sfc_txq_info *txq_info;
 	struct sfc_txq *txq;
@@ -440,9 +441,16 @@ sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index)
 	if ((txq->flags & ETH_TXQ_FLAGS_NOXSUMTCP) ||
 	    (txq->flags & ETH_TXQ_FLAGS_NOXSUMUDP)) {
 		flags = EFX_TXQ_CKSUM_IPV4;
+
+		if (encp->enc_tunnel_encapsulations_supported != 0)
+			flags |= EFX_TXQ_CKSUM_INNER_IPV4;
 	} else {
 		flags = EFX_TXQ_CKSUM_IPV4 | EFX_TXQ_CKSUM_TCPUDP;
 
+		if (encp->enc_tunnel_encapsulations_supported != 0)
+			flags |= EFX_TXQ_CKSUM_INNER_IPV4 |
+				 EFX_TXQ_CKSUM_INNER_TCPUDP;
+
 		if (sa->tso)
 			flags |= EFX_TXQ_FATSOV2;
 	}
-- 
2.7.4