From owner-freebsd-amd64@freebsd.org Wed Mar 2 18:43:09 2016 Return-Path: Delivered-To: freebsd-amd64@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D76EEAC2BBE for ; Wed, 2 Mar 2016 18:43:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id ADAEC1BBE for ; Wed, 2 Mar 2016 18:43:09 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u22Ih8Hx046708 for ; Wed, 2 Mar 2016 18:43:09 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 206716] HPN-SSH: getsockopt(SO_SNDBUF) returns high watermark, not setsockopt(SO_SNDBUF) Date: Wed, 02 Mar 2016 18:43:09 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 10.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: timon@timon.net.nz X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Mailman-Approved-At: Wed, 02 Mar 2016 19:02:35 +0000 X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Mar 2016 18:43:09 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D206716 timon@timon.net.nz changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |timon@timon.net.nz --- Comment #4 from timon@timon.net.nz --- Maybe I miss something, but looks like there is no bug in FreeBSD. Yes, on FreeBSD getsockopt(..., SO_SNDBUF, ...) returns "high watermark", b= ut setsockopt(..., SO_SNDBUF, ...) attempts to resize the buffer and, on succe= ss, sets "high watermark" to the new buffer size. So getsockopt() returns the v= alue set by getsockopt(). I have written a simple test and run it on the 10.1-RELEASE and 10.2-RELEAS= E: -----8<----- #include #include #include #include #include int main () { int s, size; socklen_t sizelen; s =3D socket(AF_INET6, SOCK_RAW, IPPROTO_IP); sizelen =3D sizeof size; getsockopt(s, SOL_SOCKET, SO_SNDBUF, &size, &sizelen); printf("Current socket send buffer size: %i\n", size); size /=3D 2; setsockopt(s, SOL_SOCKET, SO_SNDBUF, &size, sizelen); getsockopt(s, SOL_SOCKET, SO_SNDBUF, &size, &sizelen); printf("New socket send buffer size: %i\n", size); } -----8<----- $ cc test.so_sndbuf.c $ sudo ./a.out=20 Current socket send buffer size: 9216 New socket send buffer size: 4608 --=20 You are receiving this mail because: You are on the CC list for the bug.=