Netdev Archive on lore.kernel.org help / color / mirror / Atom feed
From: "Pali Rohár" <pali@kernel.org> To: Andrew Lunn <andrew@lunn.ch> Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: How to find out name or id of newly created interface Date: Mon, 2 Aug 2021 19:25:39 +0200 [thread overview] Message-ID: <20210802172539.2v3qnkjmp7l2qtxl@pali> (raw) In-Reply-To: <YQf/UVmFEF2ihyKY@lunn.ch> On Monday 02 August 2021 16:21:05 Andrew Lunn wrote: > > Hello! This has additional issue that I have to choose some free ifindex > > number and it introduce another race condition that other userspace > > process may choose same ifindex number. So create request in this case > > fails if other userspace process is faster... So it has same race > > condition as specifying interface name. > > O.K. if you don't want to deal with retries, you are going to have to > modify the return value. The nice thing is, its netlink. So you can > add additional attributes, and not break backwards compatibility. User > space should ignore all attributes it does not expect. Guillaume already proposed to implement NLM_F_ECHO... > But i suspect the architecture of the code is not going to make it > easy. > > Andrew
next prev parent reply other threads:[~2021-08-02 17:25 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-31 20:30 How to find out name or id of newly created interface Pali Rohár 2021-08-01 14:31 ` Andrew Lunn 2021-08-01 14:38 ` Pali Rohár 2021-08-02 14:21 ` Andrew Lunn 2021-08-02 17:25 ` Pali Rohár [this message] 2021-08-02 10:02 ` Guillaume Nault 2021-08-02 10:58 ` Pali Rohár 2021-08-02 13:43 ` Guillaume Nault 2021-08-02 17:23 ` Pali Rohár
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210802172539.2v3qnkjmp7l2qtxl@pali \ --to=pali@kernel.org \ --cc=andrew@lunn.ch \ --cc=linux-kernel@vger.kernel.org \ --cc=netdev@vger.kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).