From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Shahaf Shuler <shahafs@mellanox.com>, <thomas@monjalon.net>
Cc: <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3 2/2] ethdev: introduce Tx queue offloads API
Date: Wed, 13 Sep 2017 11:40:40 +0300 [thread overview]
Message-ID: <afa49733-061d-e7e3-3785-757ef578190f@solarflare.com> (raw)
In-Reply-To: <c2f27198ce67d3755b543fea11248129a2c3e6d1.1505284270.git.shahafs@mellanox.com>
On 09/13/2017 09:37 AM, Shahaf Shuler wrote:
> Introduce a new API to configure Tx 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_TX_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.
Note about documentation of the per-queue and per-port offloads
coexistence is applicable here as well. It would be really helpful to
have it
in the documentation.
> In addition the Tx offloads will be disabled by default and be
> enabled per application needs. This will much simplify PMD management of
> the different offloads.
>
> Applications should set the ETH_TXQ_FLAGS_IGNORE flag on txq_flags
> field in order to move to the new API.
>
> The old Tx 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 <shahafs@mellanox.com>
> ---
> doc/guides/nics/features.rst | 33 +++++++++++++++-----
> lib/librte_ether/rte_ethdev.c | 64 +++++++++++++++++++++++++++++++++++++-
> lib/librte_ether/rte_ethdev.h | 38 +++++++++++++++++++++-
> 3 files changed, 125 insertions(+), 10 deletions(-)
>
> diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
> index 4e68144ef..1a8af473b 100644
> --- a/doc/guides/nics/features.rst
> +++ b/doc/guides/nics/features.rst
[snip]
> @@ -620,6 +628,15 @@ Supports packet type parsing and returns a list of supported types.
>
> .. _nic_features_timesync:
>
> +Mbuf fast free
> +--------------
> +
> +Supports optimization for fast release of mbufs following successful Tx.
> +Requires all mbufs to come from the same mempool and has refcnt = 1.
It is ambiguous here in the case of fast free configured on port level.
Please, highlight that "from the same mempool" is per-queue.
> +
> +* **[uses] rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
> +* **[provides] rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
> +
> Timesync
> --------
>
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index b3c10701e..85b99588f 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
[snip]
> @@ -1193,6 +1242,7 @@ rte_eth_tx_queue_setup(uint8_t port_id, uint16_t tx_queue_id,
> {
> struct rte_eth_dev *dev;
> struct rte_eth_dev_info dev_info;
> + struct rte_eth_txconf local_conf;
> void **txq;
>
> RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
> @@ -1237,8 +1287,20 @@ rte_eth_tx_queue_setup(uint8_t port_id, uint16_t tx_queue_id,
> if (tx_conf == NULL)
> tx_conf = &dev_info.default_txconf;
>
> + /*
> + * Convert between the offloads API to enable PMDs to support
> + * only one of them.
> + */
> + local_conf = *tx_conf;
> + if (tx_conf->txq_flags & ETH_TXQ_FLAGS_IGNORE)
> + rte_eth_convert_txq_offloads(tx_conf->offloads,
> + &local_conf.txq_flags);
Is it intended that ignore flag is lost here?
It mean that failsafe slaves will treat txq_flags as the primary source
of offloads
configuration and do conversion from txq_flags to offloads.
For example, it means that DEV_TX_OFFLOAD_QINQ_INSERT will be lost as well
as many other offloads which are not covered by txq_flags.
> + else
> + rte_eth_convert_txq_flags(tx_conf->txq_flags,
> + &local_conf.offloads);
> +
> return (*dev->dev_ops->tx_queue_setup)(dev, tx_queue_id, nb_tx_desc,
> - socket_id, tx_conf);
> + socket_id, &local_conf);
> }
>
> void
[snip]
next prev parent reply other threads:[~2017-09-13 8:40 UTC|newest]
Thread overview: 134+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-04 7:12 [dpdk-dev] [PATCH 0/4] ethdev new " Shahaf Shuler
2017-09-04 7:12 ` [dpdk-dev] [PATCH 1/4] ethdev: rename Rx and Tx configuration structs Shahaf Shuler
2017-09-04 12:06 ` Ananyev, Konstantin
2017-09-04 12:45 ` Shahaf Shuler
2017-09-04 7:12 ` [dpdk-dev] [PATCH 2/4] ethdev: introduce Rx queue offloads API Shahaf Shuler
2017-09-04 7:12 ` [dpdk-dev] [PATCH 3/4] ethdev: introduce Tx " Shahaf Shuler
2017-09-04 7:12 ` [dpdk-dev] [PATCH 4/4] ethdev: add helpers to move to the new " Shahaf Shuler
2017-09-04 12:13 ` Ananyev, Konstantin
2017-09-04 13:25 ` Ananyev, Konstantin
2017-09-04 13:53 ` Thomas Monjalon
2017-09-04 14:18 ` Ananyev, Konstantin
2017-09-05 7:48 ` Thomas Monjalon
2017-09-05 8:09 ` Ananyev, Konstantin
2017-09-05 10:51 ` Shahaf Shuler
2017-09-05 13:50 ` Thomas Monjalon
2017-09-05 15:31 ` Ananyev, Konstantin
2017-09-06 6:01 ` Shahaf Shuler
2017-09-06 9:33 ` Ananyev, Konstantin
2017-09-13 9:27 ` Thomas Monjalon
2017-09-13 11:16 ` Shahaf Shuler
2017-09-13 12:41 ` Thomas Monjalon
2017-09-13 12:56 ` Ananyev, Konstantin
2017-09-13 13:20 ` Thomas Monjalon
2017-09-13 21:42 ` Ananyev, Konstantin
2017-09-14 8:02 ` Thomas Monjalon
2017-09-18 10:31 ` Bruce Richardson
2017-09-18 10:57 ` Ananyev, Konstantin
2017-09-18 11:04 ` Bruce Richardson
2017-09-18 11:27 ` Thomas Monjalon
2017-09-18 11:04 ` Bruce Richardson
2017-09-18 11:11 ` Ananyev, Konstantin
2017-09-18 11:32 ` Thomas Monjalon
2017-09-18 11:37 ` Bruce Richardson
2017-09-18 14:27 ` Shahaf Shuler
2017-09-18 14:42 ` Thomas Monjalon
2017-09-18 14:44 ` Bruce Richardson
2017-09-18 18:18 ` Shahaf Shuler
2017-09-18 21:08 ` Thomas Monjalon
2017-09-19 7:33 ` Shahaf Shuler
2017-09-19 7:56 ` Thomas Monjalon
2017-09-13 12:56 ` Shahaf Shuler
2017-09-04 14:02 ` Shahaf Shuler
2017-09-04 15:55 ` Ananyev, Konstantin
2017-09-10 12:07 ` [dpdk-dev] [PATCH v2 0/2] ethdev " Shahaf Shuler
2017-09-10 12:07 ` [dpdk-dev] [PATCH v2 1/2] ethdev: introduce Rx queue " Shahaf Shuler
2017-09-10 12:07 ` [dpdk-dev] [PATCH v2 2/2] ethdev: introduce Tx " Shahaf Shuler
2017-09-10 17:48 ` Stephen Hemminger
2017-09-11 5:52 ` Shahaf Shuler
2017-09-11 6:21 ` Jerin Jacob
2017-09-11 7:56 ` Shahaf Shuler
2017-09-11 8:06 ` Jerin Jacob
2017-09-11 8:46 ` Shahaf Shuler
2017-09-11 9:05 ` Jerin Jacob
2017-09-11 11:02 ` Ananyev, Konstantin
2017-09-12 4:01 ` Jerin Jacob
2017-09-12 5:25 ` Shahaf Shuler
2017-09-12 5:51 ` Jerin Jacob
2017-09-12 6:35 ` Shahaf Shuler
2017-09-12 6:46 ` Andrew Rybchenko
2017-09-12 7:17 ` Jerin Jacob
2017-09-12 8:03 ` Shahaf Shuler
2017-09-12 10:27 ` Andrew Rybchenko
2017-09-12 14:26 ` Ananyev, Konstantin
2017-09-12 14:36 ` Jerin Jacob
2017-09-12 14:43 ` Andrew Rybchenko
2017-09-12 6:43 ` Andrew Rybchenko
2017-09-12 6:59 ` Shahaf Shuler
2017-09-11 8:03 ` Andrew Rybchenko
2017-09-11 12:27 ` Shahaf Shuler
2017-09-11 13:10 ` Andrew Rybchenko
2017-09-13 6:37 ` [dpdk-dev] [PATCH v3 0/2] ethdev new " Shahaf Shuler
2017-09-13 6:37 ` [dpdk-dev] [PATCH v3 1/2] ethdev: introduce Rx queue " Shahaf Shuler
2017-09-13 8:13 ` Andrew Rybchenko
2017-09-13 12:49 ` Shahaf Shuler
2017-09-13 8:49 ` Andrew Rybchenko
2017-09-13 9:13 ` Andrew Rybchenko
2017-09-13 12:33 ` Shahaf Shuler
2017-09-13 12:34 ` Andrew Rybchenko
2017-09-13 6:37 ` [dpdk-dev] [PATCH v3 2/2] ethdev: introduce Tx " Shahaf Shuler
2017-09-13 8:40 ` Andrew Rybchenko [this message]
2017-09-13 12:51 ` Shahaf Shuler
2017-09-13 9:10 ` [dpdk-dev] [PATCH v3 0/2] ethdev new " Andrew Rybchenko
2017-09-17 6:54 ` [dpdk-dev] [PATCH v4 0/3] " Shahaf Shuler
2017-09-17 6:54 ` [dpdk-dev] [PATCH v4 1/3] ethdev: introduce Rx queue " Shahaf Shuler
2017-09-17 6:54 ` [dpdk-dev] [PATCH v4 2/3] ethdev: introduce Tx " Shahaf Shuler
2017-09-18 7:50 ` Andrew Rybchenko
2017-09-17 6:54 ` [dpdk-dev] [PATCH v4 3/3] doc: add details on ethdev " Shahaf Shuler
2017-09-18 7:51 ` Andrew Rybchenko
2017-09-18 13:40 ` Mcnamara, John
2017-09-18 7:51 ` [dpdk-dev] [PATCH v4 0/3] ethdev new " Andrew Rybchenko
2017-09-28 18:54 ` [dpdk-dev] [PATCH v5 " Shahaf Shuler
2017-09-28 18:54 ` [dpdk-dev] [PATCH v5 1/3] ethdev: introduce Rx queue " Shahaf Shuler
2017-10-03 0:32 ` Ferruh Yigit
2017-10-03 6:25 ` Shahaf Shuler
2017-10-03 19:46 ` Ferruh Yigit
2017-09-28 18:54 ` [dpdk-dev] [PATCH v5 2/3] ethdev: introduce Tx " Shahaf Shuler
2017-10-03 19:50 ` Ferruh Yigit
2017-10-04 8:06 ` Shahaf Shuler
2017-09-28 18:54 ` [dpdk-dev] [PATCH v5 3/3] doc: add details on ethdev " Shahaf Shuler
2017-10-04 8:17 ` [dpdk-dev] [PATCH v6 0/4] ethdev new " Shahaf Shuler
2017-10-04 8:17 ` [dpdk-dev] [PATCH v6 1/4] ethdev: introduce Rx queue " Shahaf Shuler
2017-10-04 8:17 ` [dpdk-dev] [PATCH v6 2/4] ethdev: introduce Tx " Shahaf Shuler
2017-10-04 8:18 ` [dpdk-dev] [PATCH v6 3/4] ethdev: add mbuf fast free Tx offload Shahaf Shuler
2017-10-04 8:18 ` [dpdk-dev] [PATCH v6 4/4] doc: add details on ethdev offloads API Shahaf Shuler
2017-10-04 13:46 ` Mcnamara, John
2018-03-15 1:58 ` Patil, Harish
2018-03-15 6:05 ` Shahaf Shuler
2018-03-16 15:51 ` [dpdk-dev] [PATCH] doc: update new ethdev offload API description Ferruh Yigit
2018-03-17 0:16 ` Patil, Harish
2018-03-18 5:52 ` Shahaf Shuler
2018-03-21 9:47 ` Andrew Rybchenko
2018-03-21 10:54 ` Ferruh Yigit
2018-03-21 11:08 ` Andrew Rybchenko
2018-03-21 11:10 ` Shahaf Shuler
2018-03-21 11:19 ` Andrew Rybchenko
2018-03-21 11:23 ` Shahaf Shuler
2018-03-21 11:37 ` Andrew Rybchenko
2018-03-21 11:40 ` Shahaf Shuler
2018-03-21 12:52 ` Ferruh Yigit
2018-03-21 13:06 ` Shahaf Shuler
2018-03-21 13:11 ` Ananyev, Konstantin
2018-03-21 12:03 ` Ananyev, Konstantin
2018-03-21 12:29 ` Shahaf Shuler
2018-03-21 12:34 ` Andrew Rybchenko
2018-03-21 12:37 ` Ananyev, Konstantin
2018-03-21 14:08 ` Thomas Monjalon
2018-03-21 14:28 ` Ferruh Yigit
2018-03-21 14:40 ` Thomas Monjalon
2018-03-21 15:26 ` Bruce Richardson
2018-03-21 15:29 ` Shahaf Shuler
2018-03-21 15:44 ` Bruce Richardson
2018-05-08 12:33 ` Ferruh Yigit
2017-10-04 16:12 ` [dpdk-dev] [PATCH v6 0/4] ethdev new offloads API Ananyev, Konstantin
2017-10-05 0:55 ` Ferruh Yigit
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