From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 825ACC433E1 for ; Sat, 15 Aug 2020 21:57:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 691F22053B for ; Sat, 15 Aug 2020 21:57:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729387AbgHOV5o (ORCPT ); Sat, 15 Aug 2020 17:57:44 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:36989 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728966AbgHOVwD (ORCPT ); Sat, 15 Aug 2020 17:52:03 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-268-OMTNH1z9M3WH3llN6ul8QQ-1; Sat, 15 Aug 2020 15:49:32 +0100 X-MC-Unique: OMTNH1z9M3WH3llN6ul8QQ-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Sat, 15 Aug 2020 15:49:31 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Sat, 15 Aug 2020 15:49:31 +0100 From: David Laight To: "'linux-sctp@vger.kernel.org'" , 'Neil Horman' , "'kent.overstreet@gmail.com'" , 'Andrew Morton' CC: "'netdev@vger.kernel.org'" Subject: RE: sctp: num_ostreams and max_instreams negotiation Thread-Topic: sctp: num_ostreams and max_instreams negotiation Thread-Index: AdZyPjABix+HSvLeTmG2b9Vg1HRq1AAFgglgAC9e6TA= Date: Sat, 15 Aug 2020 14:49:31 +0000 Message-ID: <0c1621e5da2e41e8905762d0208f9d40@AcuMS.aculab.com> References: <9a1bfa6085854387bf98b6171c879b37@AcuMS.aculab.com> <868bd24b536345e6a5596f856a0ebe90@AcuMS.aculab.com> In-Reply-To: <868bd24b536345e6a5596f856a0ebe90@AcuMS.aculab.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: aculab.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org RnJvbTogRGF2aWQgTGFpZ2h0DQo+IFNlbnQ6IDE0IEF1Z3VzdCAyMDIwIDE3OjE4DQo+IA0KPiA+ ID4gPiBBdCBzb21lIHBvaW50IHRoZSBuZWdvdGlhdGlvbiBvZiB0aGUgbnVtYmVyIG9mIFNDVFAg c3RyZWFtcw0KPiA+ID4gPiBzZWVtcyB0byBoYXZlIGdvdCBicm9rZW4uDQo+ID4gPiA+IEkndmUg ZGVmaW5pdGVseSB0ZXN0ZWQgaXQgaW4gdGhlIHBhc3QgKHByb2JhYmx5IDEwIHllYXJzIGFnbyEp DQo+ID4gPiA+IGJ1dCBvbiBhIDUuOC4wIGtlcm5lbCBnZXRzb2Nrb3B0KFNDVFBfSU5GTykgc2Vl bXMgdG8gYmUNCj4gPiA+ID4gcmV0dXJuaW5nIHRoZSAnbnVtX29zdHJlYW1zJyBzZXQgYnkgc2V0 c29ja29wdChTQ1RQX0lOSVQpDQo+ID4gPiA+IHJhdGhlciB0aGFuIHRoZSBzbWFsbGVyIG9mIHRo YXQgdmFsdWUgYW5kIHRoYXQgY29uZmlndXJlZA0KPiA+ID4gPiBhdCB0aGUgb3RoZXIgZW5kIG9m IHRoZSBjb25uZWN0aW9uLg0KPiA+ID4gPg0KPiA+ID4gPiBJJ2xsIGRvIGEgYml0IG9mIGRpZ2dp bmcuDQo+ID4gPg0KPiA+ID4gSSBjYW4ndCBmaW5kIHRoZSBjb2RlIHRoYXQgcHJvY2Vzc2VzIHRo ZSBpbml0X2Fjay4NCj4gPiA+IEJ1dCB3aGVuIHNjdHBfcHJvY3NzX2ludCgpIHNhdmVzIHRoZSBz bWFsbGVyIHZhbHVlDQo+ID4gPiBpbiBhc29jLT5jLnNpbmludF9tYXhfb3N0cmVhbXMuDQo+ID4g Pg0KPiA+ID4gQnV0IGFmZTg5OTk2MmVlMDc5IChpZiBJJ3ZlIHR5cGVkIGl0IHJpZ2h0KSBjaGFu Z2VkDQo+ID4gPiB0aGUgdmFsdWVzIFNDVFBfSU5GTyByZXBvcnRlZC4NCj4gPiA+IEFwcGFyYW50 bHkgYWRkaW5nICdzY3RwIHJlY29uZmlnJyBoYWQgY2hhbmdlZCB0aGluZ3MuDQo+ID4gPg0KPiA+ ID4gU28gSSBzdXNwZWN0IHRoaXMgaGFzIGFsbCBiZWVuIGJyb2tlbiBmb3Igb3ZlciAzIHllYXJz Lg0KPiA+DQo+ID4gSXQgbG9va3MgbGlrZSB0aGUgY2hhbmdlcyB0aGF0IGJyb2tlIGl0IHdlbnQg aW50byA0LjExLg0KPiA+IEkndmUganVzdCBjaGVja2VkIGEgMy44IGtlcm5lbCBhbmQgdGhhdCBu ZWdvdGlhdGVzIHRoZQ0KPiA+IHZhbHVlcyBkb3duIGluIGJvdGggZGlyZWN0aW9ucy4NCj4gPg0K PiA+IEkgZG9uJ3QgaGF2ZSBhbnkga2VybmVscyBsdXJraW5nIGJldHdlZW4gMy44IGFuZCA0LjE1 Lg0KPiA+IChZZXMsIEkgY291bGQgYnVpbGQgb25lLCBidXQgaXQgZG9lc24ndCByZWFsbHkgaGVs cC4pDQo+IA0KPiBPaywgYnVnIGxvY2F0ZWQgLSBwcmV0dHkgb2J2aW91cyByZWFsbHkuDQo+IG5l dC9zY3RwL3N0cmVhbS4gaGFzIHRoZSBmb2xsb3dpbmcgY29kZToNCj4gDQo+IHN0YXRpYyBpbnQg c2N0cF9zdHJlYW1fYWxsb2Nfb3V0KHN0cnVjdCBzY3RwX3N0cmVhbSAqc3RyZWFtLCBfX3UxNiBv dXRjbnQsDQo+IAkJCQkgZ2ZwX3QgZ2ZwKQ0KPiB7DQo+IAlpbnQgcmV0Ow0KPiANCj4gCWlmIChv dXRjbnQgPD0gc3RyZWFtLT5vdXRjbnQpDQo+IAkJcmV0dXJuIDA7DQoNCkRlbGV0aW5nIHRoaXMg Y2hlY2sgaXMgc3VmZmljaWVudCB0byBmaXggdGhlIGNvZGUuDQpBbG9uZyB3aXRoIHRoZSBlcXVp dmFsZW50IGNoZWNrIGluIHNjdHBfc3RyZWFtLWFsbG9jX2luKCkuDQoNCg0KPiBUaGlzIGRvZXMg bWVhbiB0aGF0IGl0IGhhcyBvbmx5IGJlZW4gYnJva2VuIHNpbmNlIHRoZSA1LjENCj4gbWVyZ2Ug d2luZG93Lg0KDQpBbmQgaXMgYSBnb29kIGNhbmRpZGF0ZSBmb3IgdGhlIGJhY2stcG9ydHMuDQoN Cj4gCXJldCA9IGdlbnJhZGl4X3ByZWFsbG9jKCZzdHJlYW0tPm91dCwgb3V0Y250LCBnZnApOw0K PiAJaWYgKHJldCkNCj4gCQlyZXR1cm4gcmV0Ow0KPiANCj4gCXN0cmVhbS0+b3V0Y250ID0gb3V0 Y250Ow0KPiAJcmV0dXJuIDA7DQo+IH0NCj4gDQo+IHNjdHBfc3RyZWFtX2FsbG9jX2luKCkgaXMg dGhlIHNhbWUuDQo+IA0KPiBUaGlzIGlzIGNhbGxlZCB0byByZWR1Y2UgdGhlIG51bWJlciBvZiBz dHJlYW1zLg0KPiBCdXQgaW4gdGhhdCBjYXNlIGl0IGRvZXMgbm90aGluZyBhdCBhbGwuDQo+IA0K PiBXaGljaCBtZWFucyB0aGF0IHRoZSAnY29udmVydCB0byBnZW5yYWRpeCcgY2hhbmdlIGJyb2tl IGl0Lg0KPiBUYWcgMjA3NWU1MGNhZjVlYS4NCj4gDQo+IEkgZG9uJ3Qga25vdyB3aGF0ICdnZW5y YWRpeCcgYXJyYXlzIG9yIHRoZSBlYXJsaWVyICdmbGV4X2FycmF5Jw0KPiBhY3R1YWxseSBsb29r IGxpa2UuDQo+IEJ1dCBpZiAnZ2VucmFkaXgnIGlzIHNvbWUga2luZCBvZiByYWRpeC10cmVlIGl0 IGlzIHByb2JhYmx5IHRoZQ0KPiB3cm9uZyBiZWFzdCBmb3IgU0NUUCBzdHJlYW1zLg0KPiBMb3Rz IG9mIGNvZGUgbG9vcHMgdGhyb3VnaCBhbGwgb2YgdGhlbS4NCg0KWWVwLCBJJ20gcHJldHR5IHN1 cmUgYSBrdm1hbGxvYygpIHdvdWxkIGJlIGJlc3QuDQoNCj4gV2hpbGUganVzdCBhc3NpZ25pbmcg dG8gc3RyZWFtLT5vdXRjbnQgd2hlbiB0aGUgdmFsdWUNCj4gaXMgcmVkdWNlZCB3aWxsIGZpeCB0 aGUgbmVnb3RpYXRpb24sIEkndmUgbm8gaWRlYQ0KPiB3aGF0IHNpZGUtZWZmZWN0cyB0aGF0IGhh cy4NCg0KSSd2ZSBkb25lIHNvbWUgY2hlY2tzLg0KVGhlIGFycmF5cyBhcmUgYWxsb2NhdGVkIHdo ZW4gYW4gSU5JVCBpcyBzZW50IGFuZCBhbHNvIGJlZm9yZQ0KYSByZWNlaXZlZCBJTklUIGlzIHBy b2Nlc3NlZC4NClNvIGlmIG9uZSBzaWRlIChlZyB0aGUgcmVzcG9uZGVyKSBhbGxvY2F0ZXMgYSB2 ZXJ5IGJpZyB2YWx1ZQ0KdGhlbiB0aGUgYXNzb2NpYXRlZCBtZW1vcnkgaXMgbmV2ZXIgZnJlZWQg d2hlbiB0aGUgdmFsdWUNCmlzIG5lZ290aWF0ZWQgZG93bi4NClRoZXJlIGlzIGEgY29tbWVudCB0 byB0aGUgZWZmZWN0IHRoYXQgdGhpcyBpcyBkZXNpcmFibGUuDQoNCklmIG15IHF1aWNrIGNhbGN1 bGF0aW9ucyBhcmUgY29ycmVjdCB0aGVuIGVhY2ggJ2luJyBpcyAyMCBieXRlcw0KYW5kIGVhY2gg J291dCcgMjQgKHdpdGggYSBsb3Qgb2YgcGFkIGJ5dGVzKS4NClNvIHRoZSBtYXggc2l6ZXMgYXJl IDMyMiBhbmQgMzg2IDRrIHBhZ2VzLg0KDQpJIGhhdmVuJ3QgbG9va2VkIGF0IGhvdyBtYW55IG9m IHRoZSAnb3V0JyBzdHJlYW1zIGdldHMgdGhlDQpleHRyYSwgc2VwYXJhdGVseSBhbGxvY2F0ZWQs IHN0cnVjdHVyZS4NCkkgc3VzcGVjdCB0aGUgbWVtb3J5IGZvb3RwcmludCBmb3IgYSBzaW5nbGUg U0NUUCBjb25uZWN0aW9uDQppcyBwb3RlbnRpYWxseSBodWdlLg0KDQoJRGF2aWQNCg0KLQ0KUmVn aXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRv biBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K