Date: Sat, 30 May 2015 08:01:16 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r283764 - projects/ifnet/sys/net Message-ID: <201505300801.t4U81G10025391@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: glebius Date: Sat May 30 08:01:16 2015 New Revision: 283764 URL: https://svnweb.freebsd.org/changeset/base/283764 Log: Fix an error I made in r283655. We need to sleep while we DON'T have an mbuf. Submitted by: Tiwei Bie <btw mail.ustc.edu.cn> Modified: projects/ifnet/sys/net/if_tap.c Modified: projects/ifnet/sys/net/if_tap.c ============================================================================== --- projects/ifnet/sys/net/if_tap.c Sat May 30 04:49:19 2015 (r283763) +++ projects/ifnet/sys/net/if_tap.c Sat May 30 08:01:16 2015 (r283764) @@ -888,7 +888,7 @@ tapread(struct cdev *dev, struct uio *ui tp->tap_flags &= ~TAP_RWAIT; /* sleep until we get a packet */ - while ((m = mbufq_dequeue(&tp->tap_queue)) != NULL) { + while ((m = mbufq_dequeue(&tp->tap_queue)) == NULL) { if (flag & O_NONBLOCK) { mtx_unlock(&tp->tap_mtx); return (EWOULDBLOCK);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201505300801.t4U81G10025391>