On 6/1/23 14:42, Denis Pryazhennikov wrote:
Configurable Rx CRC stripping is allowed only if
running firmware variant supports it and if NIC is
configured with single PF per port and without VFs.
I'd like to double-check one thing. Doesn't it require fixes on
datapath to report correct length? If no, it would be good to
see notes about it here.
Signed-off-by: Roman Zhukov <roman.zhu...@arknetworks.am>
Signed-off-by: Denis Pryazhennikov <denis.pryazhenni...@arknetworks.am>
Reviewed-by: Andy Moreton <amore...@xilinx.com>
---
doc/guides/nics/features/sfc.ini | 1 +
doc/guides/nics/sfc_efx.rst | 6 ++++--
drivers/net/sfc/sfc.h | 1 +
drivers/net/sfc/sfc_ef10_rx.c | 3 ++-
drivers/net/sfc/sfc_port.c | 12 ++++++++++++
drivers/net/sfc/sfc_rx.c | 6 +++++-
6 files changed, 25 insertions(+), 4 deletions(-)
diff --git a/doc/guides/nics/features/sfc.ini b/doc/guides/nics/features/sfc.ini
index f5ac644278ae..c41c47a63d49 100644
--- a/doc/guides/nics/features/sfc.ini
+++ b/doc/guides/nics/features/sfc.ini
@@ -23,6 +23,7 @@ RSS key update = Y
RSS reta update = Y
SR-IOV = Y
Flow control = Y
+CRC offload = Y
VLAN offload = P
L3 checksum offload = Y
L4 checksum offload = Y
diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index de0656876b96..b3a44e7ddd92 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -114,6 +114,10 @@ SFC EFX PMD has support for:
- Loopback
+- Configurable Rx CRC stripping (if running firmware variant supports it and
+ if NIC is configured with single PF per port and without VFs, otherwise
+ always stripped)
+
- SR-IOV PF
- Port representors (see :ref: switch_representation)
@@ -126,8 +130,6 @@ The features not yet supported include:
- Priority-based flow control
-- Configurable RX CRC stripping (always stripped)
-
- Header split on receive
- VLAN filtering
diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h
index 730d054aea74..5c97d5911eb2 100644
--- a/drivers/net/sfc/sfc.h
+++ b/drivers/net/sfc/sfc.h
@@ -72,6 +72,7 @@ struct sfc_port {
unsigned int flow_ctrl;
boolean_t flow_ctrl_autoneg;
size_t pdu;
+ boolean_t include_fcs;
Please, put it after flow_ctrl_autoneg to use available hole.
There is no requirements to put it after pdu.
/*
* Flow API isolated mode overrides promisc and allmulti settings;
diff --git a/drivers/net/sfc/sfc_ef10_rx.c b/drivers/net/sfc/sfc_ef10_rx.c
index 7be224c9c412..08fe41fe5d94 100644
--- a/drivers/net/sfc/sfc_ef10_rx.c
+++ b/drivers/net/sfc/sfc_ef10_rx.c
@@ -826,7 +826,8 @@ struct sfc_dp_rx sfc_ef10_rx = {
.dev_offload_capa = RTE_ETH_RX_OFFLOAD_CHECKSUM |
RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM |
RTE_ETH_RX_OFFLOAD_RSS_HASH,
- .queue_offload_capa = RTE_ETH_RX_OFFLOAD_SCATTER,
+ .queue_offload_capa = RTE_ETH_RX_OFFLOAD_SCATTER |
+ RTE_ETH_RX_OFFLOAD_KEEP_CRC,
Why is it queue level offload? It is configured per port. So,
it should be device level offload if I'm not mistaken.
.get_dev_info = sfc_ef10_rx_get_dev_info,
.qsize_up_rings = sfc_ef10_rx_qsize_up_rings,
.qcreate = sfc_ef10_rx_qcreate,
diff --git a/drivers/net/sfc/sfc_port.c b/drivers/net/sfc/sfc_port.c
index 5f312ab1ba83..24d2daf6282b 100644
--- a/drivers/net/sfc/sfc_port.c
+++ b/drivers/net/sfc/sfc_port.c
@@ -250,6 +250,11 @@ sfc_port_start(struct sfc_adapter *sa)
if (rc != 0)
goto fail_mac_pdu_set;
+ sfc_log_init(sa, "set include FCS=%u", port->include_fcs);
+ rc = efx_mac_include_fcs_set(sa->nic, port->include_fcs);
+ if (rc != 0)
+ goto fail_include_fcs_set;
+
if (!sfc_sa2shared(sa)->isolated) {
struct rte_ether_addr *addr = &port->default_mac_addr;
@@ -337,6 +342,7 @@ sfc_port_start(struct sfc_adapter *sa)
(void)efx_mac_drain(sa->nic, B_TRUE);
fail_mac_drain:
+fail_include_fcs_set:
fail_mac_stats_upload:
(void)efx_mac_stats_periodic(sa->nic, &port->mac_stats_dma_mem,
0, B_FALSE);
@@ -384,11 +390,17 @@ sfc_port_configure(struct sfc_adapter *sa)
{
const struct rte_eth_dev_data *dev_data = sa->eth_dev->data;
struct sfc_port *port = &sa->port;
+ const struct rte_eth_rxmode *rxmode = &dev_data->dev_conf.rxmode;
sfc_log_init(sa, "entry");
port->pdu = EFX_MAC_PDU(dev_data->mtu);
+ if (rxmode->offloads & RTE_ETH_RX_OFFLOAD_KEEP_CRC)
+ port->include_fcs = true;
+ else
+ port->include_fcs = false;
+
return 0;
}
diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index edd0f0c03842..f80771778c64 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -655,7 +655,8 @@ struct sfc_dp_rx sfc_efx_rx = {
.features = SFC_DP_RX_FEAT_INTR,
.dev_offload_capa = RTE_ETH_RX_OFFLOAD_CHECKSUM |
RTE_ETH_RX_OFFLOAD_RSS_HASH,
- .queue_offload_capa = RTE_ETH_RX_OFFLOAD_SCATTER,
+ .queue_offload_capa = RTE_ETH_RX_OFFLOAD_SCATTER |
+ RTE_ETH_RX_OFFLOAD_KEEP_CRC,
It seems it should be device level offload as above.
.qsize_up_rings = sfc_efx_rx_qsize_up_rings,
.qcreate = sfc_efx_rx_qcreate,
.qdestroy = sfc_efx_rx_qdestroy,
@@ -938,6 +939,9 @@ sfc_rx_get_offload_mask(struct sfc_adapter *sa)
if (encp->enc_tunnel_encapsulations_supported == 0)
no_caps |= RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM;
+ if (encp->enc_rx_include_fcs_supported == 0)
+ no_caps |= RTE_ETH_RX_OFFLOAD_KEEP_CRC;
+
return ~no_caps;
}
