From: Billy McFall <bmcfall@redhat.com>
To: thomas.monjalon@6wind.com, wenzhuo.lu@intel.com
Cc: dev@dpdk.org, Billy McFall <bmcfall@redhat.com>
Subject: [dpdk-dev] [PATCH 0/3] New API to free consumed buffers in TX ring
Date: Fri, 16 Dec 2016 07:48:48 -0500 [thread overview]
Message-ID: <20161216124851.2640-1-bmcfall@redhat.com> (raw)
Based on a request from Damjan Marion and seconded by Keith Wiles, see
dpdk-dev mailling list from 11/21/2016, add a new API to free consumed
buffers on TX ring. This addresses two scenarios:
1) Flooding a packet and want to reuse existing mbuf to avoid a packet
copy. Increment the reference count of the packet and poll new API until
reference count is decremented.
2) Application runs out of mbufs so call API to free consumed packets so
processing can continue.
API will return the number of packets freed (0-n) or error code if
feature not supported (-ENOTSUP) or input invalid (-ENODEV).
API for e1000 igb driver and vHost driver have been implemented. Other
drivers can be implemented over time. Some drivers implement a TX done
flush routine that should be reused where possible. e1000 igb driver
and vHost driver do not have such functions.
Billy McFall (3):
ethdev: New API to free consumed buffers in TX ring
driver: e1000 igb support to free consumed buffers
driver: vHost support to free consumed buffers
drivers/net/e1000/e1000_ethdev.h | 2 +
drivers/net/e1000/igb_ethdev.c | 1 +
drivers/net/e1000/igb_rxtx.c | 126 ++++++++++++++++++++++++++++++++++++++
drivers/net/vhost/rte_eth_vhost.c | 11 ++++
lib/librte_ether/rte_ethdev.h | 56 +++++++++++++++++
5 files changed, 196 insertions(+)
--
2.9.3
next reply other threads:[~2016-12-16 12:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-16 12:48 Billy McFall [this message]
2016-12-16 12:48 ` [dpdk-dev] [PATCH 1/3] ethdev: " Billy McFall
2016-12-16 16:28 ` Stephen Hemminger
2016-12-20 11:27 ` Adrien Mazarguil
2016-12-20 12:17 ` Ananyev, Konstantin
2016-12-20 12:58 ` Adrien Mazarguil
2016-12-20 14:15 ` Billy McFall
2016-12-23 9:45 ` Adrien Mazarguil
2016-12-16 12:48 ` [dpdk-dev] [PATCH 2/3] driver: e1000 igb support to free consumed buffers Billy McFall
2016-12-16 12:48 ` [dpdk-dev] [PATCH 3/3] driver: vHost " Billy McFall
2016-12-16 16:24 ` Stephen Hemminger
2017-01-11 19:54 ` Billy McFall
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