net/sfc: support IPv4 header checksum offload for EF100 Tx

Use outer layer 3 full checksum offload which does not require any
assistance from driver.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index 98521f9..0e32d0c 100644 (file)
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -329,7 +329,7 @@ boolean parameters value.
   is even more faster then **ef10** but does not support multi-segment
   mbufs, disallows multiple mempools and neglects mbuf reference counters.
   **ef100** chooses EF100 native datapath which supports multi-segment
-  mbufs and TCP/UDP checksum offloads.
+  mbufs, IPv4 and TCP/UDP checksum offloads.
 
 - ``perf_profile`` [auto|throughput|low-latency] (default **throughput**)
 

diff --git a/drivers/net/sfc/sfc_ef100_tx.c b/drivers/net/sfc/sfc_ef100_tx.c
index df42d48..96a9b6c 100644 (file)
--- a/drivers/net/sfc/sfc_ef100_tx.c
+++ b/drivers/net/sfc/sfc_ef100_tx.c
@@ -216,14 +216,17 @@ sfc_ef100_tx_reap(struct sfc_ef100_txq *txq)
 static void
 sfc_ef100_tx_qdesc_send_create(const struct rte_mbuf *m, efx_oword_t *tx_desc)
 {
+       bool outer_l3;
        bool outer_l4;
 
+       outer_l3 = (m->ol_flags & PKT_TX_IP_CKSUM);
        outer_l4 = (m->ol_flags & PKT_TX_L4_MASK);
 
-       EFX_POPULATE_OWORD_5(*tx_desc,
+       EFX_POPULATE_OWORD_6(*tx_desc,
                        ESF_GZ_TX_SEND_ADDR, rte_mbuf_data_iova(m),
                        ESF_GZ_TX_SEND_LEN, rte_pktmbuf_data_len(m),
                        ESF_GZ_TX_SEND_NUM_SEGS, m->nb_segs,
+                       ESF_GZ_TX_SEND_CSO_OUTER_L3, outer_l3,
                        ESF_GZ_TX_SEND_CSO_OUTER_L4, outer_l4,
                        ESF_GZ_TX_DESC_TYPE, ESE_GZ_TX_DESC_TYPE_SEND);
 }
@@ -597,7 +600,8 @@ struct sfc_dp_tx sfc_ef100_tx = {
        },
        .features               = SFC_DP_TX_FEAT_MULTI_PROCESS,
        .dev_offload_capa       = 0,
-       .queue_offload_capa     = DEV_TX_OFFLOAD_UDP_CKSUM |
+       .queue_offload_capa     = DEV_TX_OFFLOAD_IPV4_CKSUM |
+                                 DEV_TX_OFFLOAD_UDP_CKSUM |
                                  DEV_TX_OFFLOAD_TCP_CKSUM |
                                  DEV_TX_OFFLOAD_MULTI_SEGS,
        .get_dev_info           = sfc_ef100_get_dev_info,