[dpdk-dev] [PATCH 0/6] get status of Rx and Tx descriptors
Olivier Matz
olivier.matz at 6wind.com
Wed Mar 1 18:19:06 CET 2017
This patchset introduces a new ethdev API:
- rte_eth_rx_descriptor_status()
- rte_eth_tx_descriptor_status()
The Rx API is aims to replace rte_eth_rx_descriptor_done() which
does almost the same, but does not differentiate the case of a
descriptor used by the driver (not returned to the hw).
The usage of these functions can be:
- on Rx, anticipate that the cpu is not fast enough to process
all incoming packets, and take dispositions to solve the
problem (add more cpus, drop specific packets, ...)
- on Tx, detect that the link is overloaded, and take dispositions
to solve the problem (notify flow control, drop specific
packets)
The patchset updates ixgbe, i40e, e1000, mlx5.
The other drivers that implement the descriptor_done() API are
fm10k, sfc, virtio. They are not updated.
If the new API is accepted, the descriptor_done() can be deprecated,
and examples/l3fwd-power will be updated to.
RFC->v1:
- instead of optimizing an API that returns the number of used
descriptors like rx_queue_count(), use a more simple API that
returns the status of a descriptor, like rx_descriptor_done().
- remove ethdev api rework (first 2 patches), they have been
sent separately
Olivier Matz (6):
ethdev: add descriptor status API
net/ixgbe: implement descriptor status API
net/e1000: implement descriptor status API (igb)
net/e1000: implement descriptor status API (em)
net/mlx5: implement descriptor status API
net/i40e: implement descriptor status API
drivers/net/e1000/e1000_ethdev.h | 10 +++++
drivers/net/e1000/em_ethdev.c | 2 +
drivers/net/e1000/em_rxtx.c | 49 ++++++++++++++++++++++
drivers/net/e1000/igb_ethdev.c | 2 +
drivers/net/e1000/igb_rxtx.c | 46 +++++++++++++++++++++
drivers/net/i40e/i40e_ethdev.c | 2 +
drivers/net/i40e/i40e_ethdev_vf.c | 2 +
drivers/net/i40e/i40e_rxtx.c | 56 +++++++++++++++++++++++++
drivers/net/i40e/i40e_rxtx.h | 4 ++
drivers/net/ixgbe/ixgbe_ethdev.c | 4 ++
drivers/net/ixgbe/ixgbe_ethdev.h | 5 +++
drivers/net/ixgbe/ixgbe_rxtx.c | 55 +++++++++++++++++++++++++
drivers/net/mlx5/mlx5.c | 2 +
drivers/net/mlx5/mlx5_rxtx.c | 83 +++++++++++++++++++++++++++++++++++++
drivers/net/mlx5/mlx5_rxtx.h | 2 +
lib/librte_ether/rte_ethdev.h | 86 +++++++++++++++++++++++++++++++++++++++
16 files changed, 410 insertions(+)
--
2.8.1
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