[dpdk-dev] [PATCH 11/13] net/sfc: multi-segment support as is Tx datapath features

[Andrew Rybchenko]

Signed-off-by: Andrew Rybchenko <arybche...@solarflare.com>
---
 drivers/net/sfc/sfc_dp_tx.h   |  1 +
 drivers/net/sfc/sfc_ef10_tx.c |  2 +-
 drivers/net/sfc/sfc_ethdev.c  |  3 +++
 drivers/net/sfc/sfc_tx.c      | 10 +++++++++-
 4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/net/sfc/sfc_dp_tx.h b/drivers/net/sfc/sfc_dp_tx.h
index 8c74428..4f01f65 100644
--- a/drivers/net/sfc/sfc_dp_tx.h
+++ b/drivers/net/sfc/sfc_dp_tx.h
@@ -141,6 +141,7 @@ struct sfc_dp_tx {
        unsigned int                    features;
 #define SFC_DP_TX_FEAT_VLAN_INSERT     0x1
 #define SFC_DP_TX_FEAT_TSO             0x2
+#define SFC_DP_TX_FEAT_MULTI_SEG       0x4
        sfc_dp_tx_qcreate_t             *qcreate;
        sfc_dp_tx_qdestroy_t            *qdestroy;
        sfc_dp_tx_qstart_t              *qstart;
diff --git a/drivers/net/sfc/sfc_ef10_tx.c b/drivers/net/sfc/sfc_ef10_tx.c
index 8718961..047d0e7 100644
--- a/drivers/net/sfc/sfc_ef10_tx.c
+++ b/drivers/net/sfc/sfc_ef10_tx.c
@@ -428,7 +428,7 @@ struct sfc_dp_tx sfc_ef10_tx = {
                .type           = SFC_DP_TX,
                .hw_fw_caps     = SFC_DP_HW_FW_CAP_EF10,
        },
-       .features               = 0,
+       .features               = SFC_DP_TX_FEAT_MULTI_SEG,
        .qcreate                = sfc_ef10_tx_qcreate,
        .qdestroy               = sfc_ef10_tx_qdestroy,
        .qstart                 = sfc_ef10_tx_qstart,
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 168c965..ce87284 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -90,6 +90,9 @@
        else
                dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_VLAN_INSERT;
 
+       if (~sa->dp_tx->features & SFC_DP_TX_FEAT_MULTI_SEG)
+               dev_info->default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
+
 #if EFSYS_OPT_RX_SCALE
        if (sa->rss_support != EFX_RX_SCALE_UNAVAILABLE) {
                dev_info->reta_size = EFX_RSS_TBL_SIZE;
diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index d3d5ecc..8062615 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -82,6 +82,13 @@
                rc = EINVAL;
        }
 
+       if (((flags & ETH_TXQ_FLAGS_NOMULTSEGS) == 0) &&
+           (~sa->dp_tx->features & SFC_DP_TX_FEAT_MULTI_SEG)) {
+               sfc_err(sa, "Multi-segment is not supported by %s datapath",
+                       sa->dp_tx->dp.name);
+               rc = EINVAL;
+       }
+
        if ((flags & ETH_TXQ_FLAGS_NOVLANOFFL) == 0) {
                if (!encp->enc_hw_tx_insert_vlan_enabled) {
                        sfc_err(sa, "VLAN offload is not supported");
@@ -919,7 +926,8 @@ struct sfc_dp_tx sfc_efx_tx = {
                .hw_fw_caps     = 0,
        },
        .features               = SFC_DP_TX_FEAT_VLAN_INSERT |
-                                 SFC_DP_TX_FEAT_TSO,
+                                 SFC_DP_TX_FEAT_TSO |
+                                 SFC_DP_TX_FEAT_MULTI_SEG,
        .qcreate                = sfc_efx_tx_qcreate,
        .qdestroy               = sfc_efx_tx_qdestroy,
        .qstart                 = sfc_efx_tx_qstart,
-- 
1.8.2.3