From: "Yang, Qiming" <qiming.yang@intel.com>
To: Andrew Rybchenko <arybchenko@solarflare.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "thomas.monjalon@6wind.com" <thomas.monjalon@6wind.com>,
"Yigit, Ferruh" <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [PATCH v9 1/5] ethdev: add firmware version get
Date: Mon, 16 Jan 2017 08:51:50 +0000 [thread overview]
Message-ID: <F5DF4F0E3AFEF648ADC1C3C33AD4DBF16EDCC8BF@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <e4b97867-be19-aaed-dbcd-0dc98abc7706@solarflare.com>
Hi, Andrew
> > diff --git a/lib/librte_ether/rte_ethdev.c
> > b/lib/librte_ether/rte_ethdev.c index 917557a..89cffcf 100644
> > --- a/lib/librte_ether/rte_ethdev.c
> > +++ b/lib/librte_ether/rte_ethdev.c
> > @@ -1588,6 +1588,18 @@
> rte_eth_dev_set_rx_queue_stats_mapping(uint8_t port_id, uint16_t
> rx_queue_id,
> > STAT_QMAP_RX);
> > }
> >
> > +int
> > +rte_eth_dev_fw_version_get(uint8_t port_id, char *fw_version, size_t
> > +fw_size) {
> > + struct rte_eth_dev *dev;
> > +
> > + RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
> > + dev = &rte_eth_devices[port_id];
> > +
> > + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fw_version_get, -
> ENOTSUP);
> > + return (*dev->dev_ops->fw_version_get)(dev, fw_version, fw_size);
>
> I think it would be good to handle difference from snprintf() behaviour here
> and specify that fw_version_get callback has exactly snprintf()-like return
> value.
> It would allow to avoid
> duplicated code in all drivers (adding 1 for terminating null, conversion of
> success value to 0).
But I think it would be better to just keep the way it is. If I handle snpritf() behavior here,
may the function rte_eth_dev_fw_version_get and ops fw_version_get will have different
definition of return value.
> Also I think warning about insufficient space is not required. It could be
> intentional to call the first time with 0 (or some small) space to get required
> space to be (re)allocated.
> May be debug level message would be useful.
Good advice, when call this function with 0, this function will become a API to get
firmware version size. I think we can remove the warning message here.
>
> > +}
> > +
> > void
> > rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info
> *dev_info)
> > {
> > diff --git a/lib/librte_ether/rte_ethdev.h
> > b/lib/librte_ether/rte_ethdev.h index ded43d7..37a55ef 100644
> > --- a/lib/librte_ether/rte_ethdev.h
> > +++ b/lib/librte_ether/rte_ethdev.h
> > @@ -1177,6 +1177,10 @@ typedef uint32_t
> (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
> > typedef int (*eth_rx_descriptor_done_t)(void *rxq, uint16_t offset);
> > /**< @internal Check DD bit of specific RX descriptor */
> >
> > +typedef int (*eth_fw_version_get_t)(struct rte_eth_dev *dev,
> > + char *fw_version, size_t fw_size); /**<
> @internal Get
> > +firmware information of an Ethernet device. */
> > +
>
> If we finally have different return value for
> rte_eth_dev_fw_version_get() and here,
> it would be useful to highlight it here.
If I keep the handle of snprintf() return value in drivers, they will not have different
return here, so the highlight is not necessary.
> > typedef void (*eth_rxq_info_get_t)(struct rte_eth_dev *dev,
> > uint16_t rx_queue_id, struct rte_eth_rxq_info *qinfo);
> >
> > @@ -1459,6 +1463,7 @@ struct eth_dev_ops {
> > eth_dev_infos_get_t dev_infos_get; /**< Get device info. */
> > eth_rxq_info_get_t rxq_info_get; /**< retrieve RX queue
> information. */
> > eth_txq_info_get_t txq_info_get; /**< retrieve TX queue
> information. */
> > + eth_fw_version_get_t fw_version_get; /**< Get firmware
> version. */
> > eth_dev_supported_ptypes_get_t dev_supported_ptypes_get;
> > /**< Get packet types supported and identified by device. */
> >
> > @@ -2396,6 +2401,27 @@ void rte_eth_macaddr_get(uint8_t port_id,
> struct ether_addr *mac_addr);
> > void rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info
> > *dev_info);
> >
> > /**
> > + * Retrieve the firmware version of a device.
> > + *
> > + * @param port_id
> > + * The port identifier of the device.
> > + * @param fw_version
> > + * A array pointer to store the firmware version of a device,
> > + * allocated by caller.
> > + * @param fw_size
> > + * The size of the array pointed by fw_version, which should be
> > + * large enough to store firmware version of the device.
> > + * @return
> > + * - (0) if successful.
> > + * - (-ENOTSUP) if operation is not supported.
> > + * - (-ENODEV) if *port_id* invalid.
> > + * - (>0) if *fw_size* is not enough to store firmware version, return
> > + * the size of the non truncated string.
>
> It is OK for me to keep 0 for success here and it is right in this case to include
> terminating null iin the return value if size is insufficient (to cover corner case
> with empty FW version).
> Please, highlight that terminating null is included here. It is the difference
> from snprintf() and it should be 100% clear.
>
You are right, I'll highlight that the firmware version stored here is include '\0'.
> > + */
> > +int rte_eth_dev_fw_version_get(uint8_t port_id,
> > + char *fw_version, size_t fw_size);
> > +
> > +/**
> > * Retrieve the supported packet types of an Ethernet device.
> > *
> > * When a packet type is announced as supported, it *must* be
> > recognized by diff --git a/lib/librte_ether/rte_ether_version.map
> > b/lib/librte_ether/rte_ether_version.map
> > index 0c2859e..c6c9d0d 100644
> > --- a/lib/librte_ether/rte_ether_version.map
> > +++ b/lib/librte_ether/rte_ether_version.map
> > @@ -146,6 +146,7 @@ DPDK_17.02 {
> > global:
> >
> > _rte_eth_dev_reset;
> > + rte_eth_dev_fw_version_get;
> > rte_flow_create;
> > rte_flow_destroy;
> > rte_flow_flush;
>
next prev parent reply other threads:[~2017-01-16 8:51 UTC|newest]
Thread overview: 128+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-17 9:42 [dpdk-dev] [PATCH] e1000: " Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH 1/5] ethdev: " Qiming Yang
2016-11-17 13:36 ` Thomas Monjalon
2016-11-18 2:10 ` Yang, Qiming
2016-11-18 1:09 ` Remy Horton
2016-11-18 2:18 ` Yang, Qiming
2016-12-06 7:16 ` [dpdk-dev] [PATCH v2 0/5] example/ethtool: add bus info and fw " Qiming Yang
2016-12-06 7:16 ` [dpdk-dev] [PATCH v2 1/5] ethdev: add firmware " Qiming Yang
2016-12-08 11:07 ` Ferruh Yigit
2016-12-12 1:28 ` Yang, Qiming
2016-12-06 7:16 ` [dpdk-dev] [PATCH v2 2/5] net/e1000: " Qiming Yang
2016-12-07 1:16 ` Lu, Wenzhuo
2016-12-06 7:16 ` [dpdk-dev] [PATCH v2 3/5] net/ixgbe: " Qiming Yang
2016-12-06 7:16 ` [dpdk-dev] [PATCH v2 4/5] net/i40e: " Qiming Yang
2016-12-06 7:16 ` [dpdk-dev] [PATCH v2 5/5] ethtool: dispaly bus info and firmware version Qiming Yang
2016-12-23 12:50 ` Ferruh Yigit
2016-12-27 13:06 ` [dpdk-dev] [PATCH v3] " Qiming Yang
2017-01-04 7:51 ` Wu, Jingjing
2017-01-04 12:18 ` [dpdk-dev] [PATCH v4] ethtool: dispaly bus information Qiming Yang
2017-01-04 14:49 ` Mcnamara, John
2017-01-05 1:51 ` Yang, Qiming
2017-02-09 21:32 ` Thomas Monjalon
2016-12-08 8:34 ` [dpdk-dev] [PATCH v2 0/5] example/ethtool: add bus info and fw version get Remy Horton
2016-12-12 1:43 ` Yang, Qiming
2016-12-22 11:07 ` Thomas Monjalon
2016-12-22 14:36 ` Ferruh Yigit
2016-12-22 14:47 ` Thomas Monjalon
2016-12-22 15:05 ` Ferruh Yigit
2016-12-22 15:31 ` Thomas Monjalon
2016-12-23 12:48 ` Ferruh Yigit
2017-01-05 3:04 ` Zhang, Helin
2016-12-27 12:30 ` [dpdk-dev] [PATCH v3 0/4] new API 'rte_eth_dev_fw_info_get' Qiming Yang
2016-12-27 12:30 ` [dpdk-dev] [PATCH v3 1/4] ethdev: add firmware information get Qiming Yang
2017-01-02 15:38 ` Thomas Monjalon
[not found] ` <F5DF4F0E3AFEF648ADC1C3C33AD4DBF16EDC9515@SHSMSX101.ccr.corp.intel.com>
[not found] ` <10603884.vrshqR2O82@xps13>
2017-01-03 9:05 ` Yang, Qiming
2017-01-03 14:49 ` Ferruh Yigit
2017-01-04 3:33 ` Yang, Qiming
2017-01-04 7:48 ` Wu, Jingjing
2017-01-04 8:43 ` Ferruh Yigit
2017-01-05 1:04 ` Wu, Jingjing
2017-01-03 14:58 ` Ferruh Yigit
2016-12-27 12:30 ` [dpdk-dev] [PATCH v3 2/4] net/e1000: add firmware version get Qiming Yang
2017-01-03 15:02 ` Ferruh Yigit
2017-01-04 3:14 ` Yang, Qiming
2017-01-04 8:47 ` Ferruh Yigit
2016-12-27 12:30 ` [dpdk-dev] [PATCH v3 3/4] net/ixgbe: " Qiming Yang
2017-01-03 15:04 ` Ferruh Yigit
2017-01-04 2:44 ` Yang, Qiming
2017-01-04 9:06 ` Ferruh Yigit
2017-01-04 9:48 ` Yang, Qiming
2017-01-04 12:01 ` Ferruh Yigit
2016-12-27 12:30 ` [dpdk-dev] [PATCH v3 4/4] net/i40e: " Qiming Yang
2017-01-04 12:03 ` [dpdk-dev] [PATCH v4 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-04 12:03 ` [dpdk-dev] [PATCH v4 1/5] ethdev: add firmware version get Qiming Yang
2017-01-05 13:44 ` Thomas Monjalon
2017-01-08 3:09 ` Yang, Qiming
2017-01-04 12:03 ` [dpdk-dev] [PATCH v4 2/5] net/e1000: " Qiming Yang
2017-01-04 13:59 ` Ferruh Yigit
2017-01-05 1:50 ` Yang, Qiming
2017-01-04 12:03 ` [dpdk-dev] [PATCH v4 3/5] net/ixgbe: " Qiming Yang
2017-01-04 12:03 ` [dpdk-dev] [PATCH v4 4/5] net/i40e: " Qiming Yang
2017-01-04 14:00 ` Ferruh Yigit
2017-01-04 12:03 ` [dpdk-dev] [PATCH v4 5/5] ethtool: dispaly firmware version Qiming Yang
2017-01-04 14:00 ` Ferruh Yigit
2017-01-05 1:31 ` Yang, Qiming
2017-01-06 15:55 ` Remy Horton
2017-01-08 4:11 ` [dpdk-dev] [PATCH v5 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-08 4:11 ` [dpdk-dev] [PATCH v5 1/5] ethdev: add firmware version get Qiming Yang
2017-01-08 6:38 ` Andrew Rybchenko
2017-01-08 23:05 ` Stephen Hemminger
2017-01-09 7:16 ` Yang, Qiming
2017-01-09 10:01 ` Remy Horton
2017-01-09 17:23 ` Stephen Hemminger
2017-01-08 4:11 ` [dpdk-dev] [PATCH v5 2/5] net/e1000: " Qiming Yang
2017-01-08 23:03 ` Stephen Hemminger
2017-01-09 1:48 ` Yang, Qiming
2017-01-08 4:11 ` [dpdk-dev] [PATCH v5 3/5] net/ixgbe: " Qiming Yang
2017-01-08 4:11 ` [dpdk-dev] [PATCH v5 4/5] net/i40e: " Qiming Yang
2017-01-08 23:08 ` Stephen Hemminger
2017-01-08 4:11 ` [dpdk-dev] [PATCH v5 5/5] ethtool: display firmware version Qiming Yang
2017-01-08 23:11 ` Stephen Hemminger
2017-01-10 9:00 ` [dpdk-dev] [DPDK 1/5] ethdev: add firmware version get Qiming Yang
2017-01-10 9:00 ` [dpdk-dev] [DPDK 2/5] net/e1000: " Qiming Yang
2017-01-10 9:00 ` [dpdk-dev] [DPDK 3/5] net/ixgbe: " Qiming Yang
2017-01-10 9:08 ` [dpdk-dev] [PATCH v6 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-10 9:08 ` [dpdk-dev] [PATCH v6 1/5] ethdev: add firmware version get Qiming Yang
2017-01-11 6:41 ` [dpdk-dev] [PATCH v7 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-11 6:41 ` [dpdk-dev] [PATCH v7 1/5] ethdev: add firmware version get Qiming Yang
2017-01-11 6:41 ` [dpdk-dev] [PATCH v7 2/5] net/e1000: " Qiming Yang
2017-01-11 15:45 ` Remy Horton
2017-01-12 1:25 ` Yang, Qiming
2017-01-11 6:41 ` [dpdk-dev] [PATCH v7 3/5] net/ixgbe: " Qiming Yang
2017-01-11 6:41 ` [dpdk-dev] [PATCH v7 4/5] net/i40e: " Qiming Yang
2017-01-11 6:41 ` [dpdk-dev] [PATCH v7 5/5] ethtool: display firmware version Qiming Yang
2017-01-12 6:31 ` [dpdk-dev] [PATCH v8 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-12 6:31 ` [dpdk-dev] [PATCH v8 1/5] ethdev: add firmware version get Qiming Yang
2017-01-15 20:56 ` Thomas Monjalon
2017-01-16 5:44 ` [dpdk-dev] [PATCH v9 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-16 5:44 ` [dpdk-dev] [PATCH v9 1/5] ethdev: add firmware version get Qiming Yang
2017-01-16 7:05 ` Andrew Rybchenko
2017-01-16 8:51 ` Yang, Qiming [this message]
2017-01-16 5:44 ` [dpdk-dev] [PATCH v9 2/5] net/e1000: " Qiming Yang
2017-01-16 5:44 ` [dpdk-dev] [PATCH v9 3/5] net/ixgbe: " Qiming Yang
2017-01-16 5:44 ` [dpdk-dev] [PATCH v9 4/5] net/i40e: " Qiming Yang
2017-01-16 5:44 ` [dpdk-dev] [PATCH v9 5/5] ethtool: display firmware version Qiming Yang
2017-01-16 10:48 ` [dpdk-dev] [PATCH v10 0/5] new API 'rte_eth_dev_fw_version_get' Qiming Yang
2017-01-16 10:48 ` [dpdk-dev] [PATCH v10 1/5] ethdev: add firmware version get Qiming Yang
2017-01-16 10:48 ` [dpdk-dev] [PATCH v10 2/5] net/e1000: " Qiming Yang
2017-01-16 10:48 ` [dpdk-dev] [PATCH v10 3/5] net/ixgbe: " Qiming Yang
2017-01-16 10:48 ` [dpdk-dev] [PATCH v10 4/5] net/i40e: " Qiming Yang
2017-01-16 10:48 ` [dpdk-dev] [PATCH v10 5/5] ethtool: display firmware version Qiming Yang
2017-01-17 21:35 ` [dpdk-dev] [PATCH v10 0/5] new API 'rte_eth_dev_fw_version_get' Thomas Monjalon
2017-01-12 6:31 ` [dpdk-dev] [PATCH v8 2/5] net/e1000: add firmware version get Qiming Yang
2017-01-12 6:31 ` [dpdk-dev] [PATCH v8 3/5] net/ixgbe: " Qiming Yang
2017-01-12 6:31 ` [dpdk-dev] [PATCH v8 4/5] net/i40e: " Qiming Yang
2017-01-12 6:31 ` [dpdk-dev] [PATCH v8 5/5] ethtool: display firmware version Qiming Yang
2017-01-10 9:08 ` [dpdk-dev] [PATCH v6 2/5] net/e1000: add firmware version get Qiming Yang
2017-01-10 9:08 ` [dpdk-dev] [PATCH v6 3/5] net/ixgbe: " Qiming Yang
2017-01-10 9:08 ` [dpdk-dev] [PATCH v6 4/5] net/i40e: " Qiming Yang
2017-01-10 9:08 ` [dpdk-dev] [PATCH v6 5/5] ethtool: display firmware version Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH] ethtool: dispaly bus info and " Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH] i40e: add firmware version get Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH] ixgbe: " Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH 2/5] e1000: " Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH 3/5] ixgbe: " Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH 4/5] i40e: " Qiming Yang
2016-11-17 9:42 ` [dpdk-dev] [PATCH 5/5] ethtool: dispaly bus info and firmware version Qiming Yang
2016-11-18 1:10 ` Remy Horton
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