[dpdk-dev] [PATCH 14/31] net/sfc: handle received packet type info provided by HW

[Andrew Rybchenko <arybchenko@solarflare.com>]

Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 doc/guides/nics/features/sfc_efx.ini |  1 +
 doc/guides/nics/sfc_efx.rst          |  2 ++
 drivers/net/sfc/sfc_ethdev.c         | 19 +++++++++++++++++++
 drivers/net/sfc/sfc_rx.c             | 14 +++++++++++++-
 4 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/features/sfc_efx.ini b/doc/guides/nics/features/sfc_efx.ini
index ec1d1db..b5887d5 100644
--- a/doc/guides/nics/features/sfc_efx.ini
+++ b/doc/guides/nics/features/sfc_efx.ini
@@ -15,6 +15,7 @@ Multicast MAC filter = Y
 Flow control         = Y
 L3 checksum offload  = Y
 L4 checksum offload  = Y
+Packet type parsing  = Y
 Basic stats          = Y
 Extended stats       = Y
 BSD nic_uio          = Y
diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index 452a9ff..57e8318 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -64,6 +64,8 @@ SFC EFX PMD has support for:
 
 - IPv4/IPv6 TCP/UDP receive checksum offload
 
+- Received packet type information
+
 
 Non-supported Features
 ----------------------
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 235582d..03c9a01 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -97,6 +97,24 @@ sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->tx_desc_lim.nb_align = EFX_TXQ_MINNDESCS;
 }
 
+static const uint32_t *
+sfc_dev_supported_ptypes_get(struct rte_eth_dev *dev)
+{
+	static const uint32_t ptypes[] = {
+		RTE_PTYPE_L2_ETHER,
+		RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
+		RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
+		RTE_PTYPE_L4_TCP,
+		RTE_PTYPE_L4_UDP,
+		RTE_PTYPE_UNKNOWN
+	};
+
+	if (dev->rx_pkt_burst == sfc_recv_pkts)
+		return ptypes;
+
+	return NULL;
+}
+
 static int
 sfc_dev_configure(struct rte_eth_dev *dev)
 {
@@ -819,6 +837,7 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
 	.xstats_get			= sfc_xstats_get,
 	.xstats_get_names		= sfc_xstats_get_names,
 	.dev_infos_get			= sfc_dev_infos_get,
+	.dev_supported_ptypes_get	= sfc_dev_supported_ptypes_get,
 	.mtu_set			= sfc_dev_set_mtu,
 	.rx_queue_setup			= sfc_rx_queue_setup,
 	.rx_queue_release		= sfc_rx_queue_release,
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 4df4132..be8fa23 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -169,6 +169,18 @@ sfc_rx_desc_flags_to_offload_flags(const unsigned int desc_flags)
 	return mbuf_flags;
 }
 
+static uint32_t
+sfc_rx_desc_flags_to_packet_type(const unsigned int desc_flags)
+{
+	return RTE_PTYPE_L2_ETHER |
+		((desc_flags & EFX_PKT_IPV4) ?
+			RTE_PTYPE_L3_IPV4_EXT_UNKNOWN : 0) |
+		((desc_flags & EFX_PKT_IPV6) ?
+			RTE_PTYPE_L3_IPV6_EXT_UNKNOWN : 0) |
+		((desc_flags & EFX_PKT_TCP) ? RTE_PTYPE_L4_TCP : 0) |
+		((desc_flags & EFX_PKT_UDP) ? RTE_PTYPE_L4_UDP : 0);
+}
+
 uint16_t
 sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 {
@@ -222,7 +234,7 @@ sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 		rte_pktmbuf_pkt_len(m) = seg_len;
 
 		m->ol_flags = sfc_rx_desc_flags_to_offload_flags(desc_flags);
-		m->packet_type = RTE_PTYPE_L2_ETHER;
+		m->packet_type = sfc_rx_desc_flags_to_packet_type(desc_flags);
 
 		*rx_pkts++ = m;
 		done_pkts++;
-- 
2.5.5