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([2601:647:4802:9070:1522:1d2e:7c9d:185c]) by smtp.gmail.com with ESMTPSA id 144sm15345610pfc.101.2021.05.11.10.13.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 May 2021 10:13:03 -0700 (PDT) Subject: Re: [PATCH 1/1] Add 'Transport Interface' (triface) option. This can be used to specify the IP interface to use for the connection. The driver uses that to set SO_BINDTODEVICE on the socket before connecting. To: "Belanger, Martin" , Hannes Reinecke , Martin Belanger , "linux-nvme@lists.infradead.org" Cc: "kbusch@kernel.org" , "axboe@fb.com" , "hch@lst.de" References: <20210415192848.962891-1-nitram_67@hotmail.com> <27a0071d-7c7b-ee5b-41a2-d5eb8de12928@suse.de> <07fa3404-ed37-052a-c2d7-0e21c119f5c5@suse.de> <7b0d0915-961a-0af2-7ea3-77f59cd98ef1@grimberg.me> <60aa6be0-ca88-bab8-c893-4c2b1d3f8baf@grimberg.me> From: Sagi Grimberg Message-ID: <9c7d43e1-e13e-43a9-8212-ff48467d3a49@grimberg.me> Date: Tue, 11 May 2021 10:13:01 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210511_101305_127781_BF5FA8BB X-CRM114-Status: GOOD ( 24.53 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Cj4gSSd2ZSBiZWVuIHRoaW5raW5nIGFib3V0IHdoYXQgeW91IHNhaWQgcmVnYXJkaW5nIHRoZSBu ZWVkIHRvIHJlcGVhdCB0aGUgLXcgb3B0aW9uIHdoZW4gdHdvIGludGVyZmFjZXMgc2hhcmUgdGhl IHNhbWUgSVAgYWRkcmVzcy4gSSB0aGluayB3ZSdyZSBsb29raW5nIGF0IHRoZSBwcm9ibGVtIGZy b20gYSBkaWZmZXJlbnQgcG9pbnQgb2Ygdmlldy4gVGhlIGN1cnJlbnQgaW1wbGVtZW50YXRpb24g dXNlcyBhbiBJUCBhZGRyZXNzIHRvIGlkZW50aWZ5IGFuIGludGVyZmFjZS4gSSwgb24gdGhlIG90 aGVyIGhhbmQsIGJlbGlldmUgdGhhdCB0aGUgYmVzdCB3YXkgdG8gaWRlbnRpZnkgYW4gaW50ZXJm YWNlIGlzIGJ5IGl0cyAiaW50ZXJmYWNlIG5hbWUgb3IgaW5kZXgiLiBJbiBwcmV2aW91cyBlbWFp bHMsIEkgcHJvdmlkZWQgZXhhbXBsZXMgb2YgdGhlIHByb2JsZW1zIHRoYXQgbWF5IG9jY3VyIHdo ZW4gdXNpbmcgYW4gSVAgYWRkcmVzcyB0byBpZGVudGlmeSBhbiBpbnRlcmZhY2UuIEZvciBleGFt cGxlLCBvbmUgY2FuIGFzc2lnbiB0aGUgc2FtZSBJUCBhZGRyZXNzIHRvIGRpZmZlcmVudCBpbnRl cmZhY2VzIG1ha2luZyBpdCBpbXBvc3NpYmxlIHRvIGRpc3Rpbmd1aXNoIGludGVyZmFjZXMgYnkg dGhlaXIgSVAgYWRkcmVzcyBhbG9uZS4gQW5vdGhlciBleGFtcGxlIGlzIHRoYXQgdGhlIGxvdyBs ZXZlbCBBUElzIChlLmcuIHNldHNvY2tvcHQoU09fQklORFRPREVWSUNFKSBkb27igJl0IGV2ZW4g cmVxdWlyZSB0aGUgc291cmNlIElQIGFkZHJlc3MuIFRoZXkgb25seSBuZWVkIHRoZSBpbnRlcmZh Y2UgbmFtZS9pbmRleC4gU28sIHdoeSBnbyB0aHJvdWdoIHRoZSB0cm91YmxlIG9mIHBlcmZvcm1p bmcgYSByZXZlcnNlIGFkZHJlc3MgbG9va3VwIHRvIHJldHJpZXZlIHRoZSBpbnRlcmZhY2UgbmFt ZS9pbmRleCB3aGVuIHRoZSBhZGRyZXNzIGlzIG5vdCB1c2VkIGF0IGFsbD8KPiAKPiBCeSB0aGUg d2F5LCBpZiBudm1lLWNsaS9saW51eC1udm1lIGFsbG93ZWQgc3BlY2lmeWluZyBpbnRlcmZhY2Vz IGJ5IG5hbWUvaW5kZXgsIHRoZW4gd2Ugd291bGQgbm90IHJlYWxseSBuZWVkIHRvIHJlcGVhdCB0 aGUgLXcgb3B0aW9uIHVubGVzcyB3ZSBhbHNvIHdhbnRlZCB0byBzZXQgdGhlIHNvdXJjZSBhZGRy ZXNzIGF0IHRoZSBzYW1lIHRpbWUuIFNldHRpbmcgdGhlIHNvdXJjZSBhZGRyZXNzIGlzIGEgY29t cGxldGVseSBkaWZmZXJlbnQgdGhpbmcgZnJvbSBzZXR0aW5nIHRoZSBpbnRlcmZhY2UuIE9uZSBz aG91bGQgYmUgYWxsb3dlZCB0byBzZXQgb25lIGluZGVwZW5kZW50bHkgZnJvbSB0aGUgb3RoZXIs IG9yIGJvdGgsIG9yIG5vbmUuCj4gCj4gSWYgeW91IGxvb2sgYXQgaG93IHBpbmcgaXMgaW1wbGVt ZW50ZWQsIHRoZXkgZG8gbm90IGluZmVyIHRoZSBpbnRlcmZhY2UgZnJvbSB0aGUgSVAgYWRkcmVz cy4gSWYgb25lIHdhbnRzIHRvIGZvcmNlIHBpbmcgdG8gZ28gb3ZlciBhbiBpbnRlcmZhY2UsIHRo ZW4gb25lIG11c3QgcHJvdmlkZSB0aGUgaW50ZXJmYWNlIGJ5IG5hbWUvaW5kZXggdXNpbmcgdGhl IC1JIG9wdGlvbi4gSWYgb25lIHdhbnRzIHRvIGNoYW5nZSB0aGUgc291cmNlIElQIGFkZHJlc3Mg KHdpdGhvdXQgZm9yY2luZyBhIHNwZWNpZmljIGludGVyZmFjZSksIHRoZW4gb25lIHByb3ZpZGVz IHRoZSBJUCBhZGRyZXNzIHRvIHRoZSAtSSBvcHRpb24uIEl0J3Mgc2ltcGxlIGFuZCBpbnR1aXRp dmUuIEFuZCBwaW5nIGFsc28gc3VwcG9ydHMgYXBwZW5kaW5nIHRoZSBpbnRlcmZhY2UgdG8gdGhl IERlc3RpbmF0aW9uIElQIHVzaW5nIHRoZSAnJScgZGVsaW1pdGVyIGZvciBJUHY2LW9ubHkgYXMg cGVyIFJGQzQwMDcuCj4gCj4gSSB0aGluayB0aGF0IG52bWUtY2xpL2xpbnV4LW52bWUgc2hvdWxk IGZvbGxvdyB0aGUgcGluZyBhcHByb2FjaC4gSW50ZXJmYWNlcyBzaG91bGQgbmV2ZXIgYmUgaW5m ZXJyZWQgZnJvbSBzb3VyY2UgSVAgYWRkcmVzc2VzLCBidXQgaW5zdGVhZCBiZSBjbGVhcmx5IGlk ZW50aWZpZWQgYnkgdGhlaXIgbmFtZSBvciBpbmRleC4gQW5kIHNldHRpbmcgdGhlIHNvdXJjZSBh ZGRyZXNzIHNob3VsZCBiZSBpbmRlcGVuZGVudCBmcm9tIHNldHRpbmcgdGhlIGludGVyZmFjZS4K CkknbSBzdGFydGluZyB0byB0aGluayB0aGF0IHdlIGFyZSBnb2luZyBpbiBjaXJjbGVzLCBJJ20g Z2V0dGluZyB0bwp0aGUgcG9pbnQgdGhhdCBoYXZpbmcgaG9zdF9pZmFjZSBpcyB0aGUgcmlnaHQg d2F5IHRvIGdvLgoKV2UgY2FuIGhhdmUgbnZtZS1jbGkgY29udmVydCA8YWRkcj4laWZhY2Ugbm90 YXRpb24gdG8KIi4uLGhvc3RfdHJhZGRyPTxhZGRyPixob3N0X2lmYWNlPTxpZmFjZT4sLi4iIHdo ZW4gY3JlYXRpbmcgdGhlCmNvbnRyb2xsZXIgc3RyaW5nLi4uCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eC1udm1lIG1haWxpbmcgbGlzdApMaW51 eC1udm1lQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFp bG1hbi9saXN0aW5mby9saW51eC1udm1lCg==