On 09/13/2017 09:37 AM, Shahaf Shuler wrote:
Introduce a new API to configure Rx offloads.
In the new API, offloads are divided into per-port and per-queue
offloads. The PMD reports capability for each of them.
Offloads are enabled using the existing DEV_RX_OFFLOAD_* flags.
To enable per-port offload, the offload should be set on both device
configuration and queue configuration. To enable per-queue offload, the
offloads can be set only on queue configuration.
Applications should set the ignore_offload_bitfield bit on rxmode
structure in order to move to the new API.
The old Rx offloads API is kept for the meanwhile, in order to enable a
smooth transition for PMDs and application to the new API.
Signed-off-by: Shahaf Shuler <shah...@mellanox.com>
---
doc/guides/nics/features.rst | 33 ++++----
lib/librte_ether/rte_ethdev.c | 156 +++++++++++++++++++++++++++++++++----
lib/librte_ether/rte_ethdev.h | 51 +++++++++++-
3 files changed, 210 insertions(+), 30 deletions(-)
[snip]
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 0597641ee..b3c10701e 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -687,12 +687,90 @@ rte_eth_speed_bitflag(uint32_t speed, int duplex)
}
}
+/**
+ * A conversion function from rxmode bitfield API.
+ */
+static void
+rte_eth_convert_rx_offload_bitfield(const struct rte_eth_rxmode *rxmode,
+ uint64_t *rx_offloads)
+{
+ uint64_t offloads = 0;
+
+ if (rxmode->header_split == 1)
+ offloads |= DEV_RX_OFFLOAD_HEADER_SPLIT;
+ if (rxmode->hw_ip_checksum == 1)
+ offloads |= DEV_RX_OFFLOAD_CHECKSUM;
+ if (rxmode->hw_vlan_filter == 1)
+ offloads |= DEV_RX_OFFLOAD_VLAN_FILTER;
+ if (rxmode->hw_vlan_strip == 1)
+ offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+ if (rxmode->hw_vlan_extend == 1)
+ offloads |= DEV_RX_OFFLOAD_VLAN_EXTEND;
+ if (rxmode->jumbo_frame == 1)
+ offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
+ if (rxmode->hw_strip_crc == 1)
+ offloads |= DEV_RX_OFFLOAD_CRC_STRIP;
+ if (rxmode->enable_scatter == 1)
+ offloads |= DEV_RX_OFFLOAD_SCATTER;
+ if (rxmode->enable_lro == 1)
+ offloads |= DEV_RX_OFFLOAD_TCP_LRO;
+
+ *rx_offloads = offloads;
+}
+
+/**
+ * A conversion function from rxmode offloads API.
+ */
+static void
+rte_eth_convert_rx_offloads(const uint64_t rx_offloads,
+ struct rte_eth_rxmode *rxmode)
+{
+
+ if (rx_offloads & DEV_RX_OFFLOAD_HEADER_SPLIT)
+ rxmode->header_split = 1;
+ else
+ rxmode->header_split = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_CHECKSUM)
+ rxmode->hw_ip_checksum = 1;
+ else
+ rxmode->hw_ip_checksum = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
+ rxmode->hw_vlan_filter = 1;
+ else
+ rxmode->hw_vlan_filter = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
+ rxmode->hw_vlan_strip = 1;
+ else
+ rxmode->hw_vlan_strip = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_VLAN_EXTEND)
+ rxmode->hw_vlan_extend = 1;
+ else
+ rxmode->hw_vlan_extend = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
+ rxmode->jumbo_frame = 1;
+ else
+ rxmode->jumbo_frame = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_CRC_STRIP)
+ rxmode->hw_strip_crc = 1;
+ else
+ rxmode->hw_strip_crc = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_SCATTER)
+ rxmode->enable_scatter = 1;
+ else
+ rxmode->enable_scatter = 0;
+ if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
+ rxmode->enable_lro = 1;
+ else
+ rxmode->enable_lro = 0;
+}
+
int
rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
const struct rte_eth_conf *dev_conf)
{
struct rte_eth_dev *dev;
struct rte_eth_dev_info dev_info;
+ struct rte_eth_conf local_conf = *dev_conf;
int diag;
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
@@ -722,8 +800,20 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q,
uint16_t nb_tx_q,
return -EBUSY;
}
+ /*
+ * Convert between the offloads API to enable PMDs to support
+ * only one of them.
+ */
+ if ((dev_conf->rxmode.ignore_offload_bitfield == 0)) {
+ rte_eth_convert_rx_offload_bitfield(
+ &dev_conf->rxmode, &local_conf.rxmode.offloads);
+ } else {
+ rte_eth_convert_rx_offloads(dev_conf->rxmode.offloads,
+ &local_conf.rxmode);
Ignore flag is lost here and it will result in treating txq_flags as the
primary
information about offloads. It is important in the case of failsafe PMD.
+ }
+
/* Copy the dev_conf parameter into the dev structure */
- memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
+ memcpy(&dev->data->dev_conf, &local_conf, sizeof(dev->data->dev_conf));
/*
* Check that the numbers of RX and TX queues are not greater
[snip]
