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| author |   itojun <itojun@openbsd.org> | 2001-08-02 22:30:41 +0000 |
|---|---|---|
| committer | itojun <itojun@openbsd.org> | 2001-08-02 22:30:41 +0000 |
| commit | 791b4bf6c9ae0bab2bc676c54dc89d2aeed2e684 (patch) | |
| tree | d774c4cede0c4db511d72b6cbde7a201d8535e60 | |
| parent | assure -> ensure (diff) | |
| download | wireguard-openbsd-791b4bf6c9ae0bab2bc676c54dc89d2aeed2e684.tar.xz wireguard-openbsd-791b4bf6c9ae0bab2bc676c54dc89d2aeed2e684.zip | |
do not exit loop even if m_len == 0. it is legal to have an mbuf with
m_len == 0 in mbuf chain.
| -rw-r--r-- | sys/net/if_tun.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/net/if_tun.c b/sys/net/if_tun.c index e93689d2b8b..3050cbd6a66 100644 --- a/sys/net/if_tun.c +++ b/sys/net/if_tun.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_tun.c,v 1.36 2001/06/27 06:07:46 kjc Exp $ */ +/* $OpenBSD: if_tun.c,v 1.37 2001/08/02 22:30:41 itojun Exp $ */ /* $NetBSD: if_tun.c,v 1.24 1996/05/07 02:40:48 thorpej Exp $ */ /* @@ -534,6 +534,11 @@ tunread(dev, uio, ioflag) splx(s); while (m0 && uio->uio_resid > 0 && error == 0) { + if (m0->m_len == 0) { + MFREE(m0, m); + m0 = m; + continue; + } len = min(uio->uio_resid, m0->m_len); if (len == 0) break; |