From: "Qiu, Michael" <michael.qiu@intel.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2] eal_pci: Fix max_vfs missing for none igb_uio driver
Date: Wed, 11 Feb 2015 13:27:50 +0000 [thread overview]
Message-ID: <533710CFB86FA344BFBF2D6802E60286CE82CA@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <1423661155-16645-1-git-send-email-michael.qiu@intel.com>
[+cc] David
On 2/11/2015 9:26 PM, Qiu, Michael wrote:
> max_vfs will only be created by igb_uio driver, for other
> drivers like vfio or pci_uio_generic, max_vfs will miss.
>
> But sriov_numvfs is not driver related, just get the vf numbers
> from that field.
>
> Signed-off-by: Michael Qiu <michael.qiu@intel.com>
> ---
> v2 --> v1:
> backport for kernel version less than 3.8
>
> lib/librte_eal/linuxapp/eal/eal_pci.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
> index b5f5410..fcf5511 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
> @@ -272,8 +272,16 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
> dev->max_vfs = 0;
> snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);
> if (!access(filename, F_OK) &&
> - eal_parse_sysfs_value(filename, &tmp) == 0) {
> + eal_parse_sysfs_value(filename, &tmp) == 0)
> dev->max_vfs = (uint16_t)tmp;
> + else {
> + /* for none igb_uio driver, need kernel
> + * version greater than 3.8 */
> + snprintf(filename, sizeof(filename),
> + "%s/sriov_numvfs", dirname);
> + if (!access(filename, F_OK) &&
> + eal_parse_sysfs_value(filename, &tmp) == 0)
> + dev->max_vfs = (uint16_t)tmp;
> }
>
> /* get numa node */
next prev parent reply other threads:[~2015-02-11 13:27 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-11 11:10 [dpdk-dev] [PATCH] " Michael Qiu
2015-02-11 12:32 ` David Marchand
2015-02-11 12:41 ` Qiu, Michael
2015-02-11 13:25 ` [dpdk-dev] [PATCH v2] " Michael Qiu
2015-02-11 13:27 ` Qiu, Michael [this message]
2015-02-12 5:50 ` David Marchand
2015-02-13 3:01 ` Qiu, Michael
2015-02-13 13:49 ` Thomas Monjalon
2015-02-12 16:25 ` Thomas Monjalon
2015-02-13 2:56 ` Qiu, Michael
2015-02-13 9:20 ` Thomas Monjalon
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