Date: Sun, 11 Mar 2018 19:26:35 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r330781 - head/lib/libipsec Message-ID: <201803111926.w2BJQZ0g043244@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: ae Date: Sun Mar 11 19:26:34 2018 New Revision: 330781 URL: https://svnweb.freebsd.org/changeset/base/330781 Log: Update pfkey_open() function to set socket's write buffer size to 128k and receive buffer size to 2MB. In case if system has bigger default values, do not lower them. This should partially solve the problem, when setkey(8) returns EAGAIN error on systems with many SAs or SPs. PR: 88336 Obtained from: NetBSD/ipsec-tools MFC after: 2 weeks Modified: head/lib/libipsec/pfkey.c Modified: head/lib/libipsec/pfkey.c ============================================================================== --- head/lib/libipsec/pfkey.c Sun Mar 11 19:22:58 2018 (r330780) +++ head/lib/libipsec/pfkey.c Sun Mar 11 19:26:34 2018 (r330781) @@ -1595,10 +1595,12 @@ pfkey_send_x5(so, type, spid) * others : success and return value of socket. */ int -pfkey_open() +pfkey_open(void) { int so; - const int bufsiz = 128 * 1024; /*is 128K enough?*/ + int bufsiz_current, bufsiz_wanted; + int ret; + socklen_t len; if ((so = socket(PF_KEY, SOCK_RAW, PF_KEY_V2)) < 0) { __ipsec_set_strerror(strerror(errno)); @@ -1609,8 +1611,28 @@ pfkey_open() * This is a temporary workaround for KAME PR 154. * Don't really care even if it fails. */ - (void)setsockopt(so, SOL_SOCKET, SO_SNDBUF, &bufsiz, sizeof(bufsiz)); - (void)setsockopt(so, SOL_SOCKET, SO_RCVBUF, &bufsiz, sizeof(bufsiz)); + /* Try to have 128k. If we have more, do not lower it. */ + bufsiz_wanted = 128 * 1024; + len = sizeof(bufsiz_current); + ret = getsockopt(so, SOL_SOCKET, SO_SNDBUF, + &bufsiz_current, &len); + if ((ret < 0) || (bufsiz_current < bufsiz_wanted)) + (void)setsockopt(so, SOL_SOCKET, SO_SNDBUF, + &bufsiz_wanted, sizeof(bufsiz_wanted)); + + /* Try to have have at least 2MB. If we have more, do not lower it. */ + bufsiz_wanted = 2 * 1024 * 1024; + len = sizeof(bufsiz_current); + ret = getsockopt(so, SOL_SOCKET, SO_RCVBUF, + &bufsiz_current, &len); + if (ret < 0) + bufsiz_current = 128 * 1024; + + for (; bufsiz_wanted > bufsiz_current; bufsiz_wanted /= 2) { + if (setsockopt(so, SOL_SOCKET, SO_RCVBUF, + &bufsiz_wanted, sizeof(bufsiz_wanted)) == 0) + break; + } __ipsec_errcode = EIPSEC_NO_ERROR; return so;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201803111926.w2BJQZ0g043244>