diff options
Diffstat (limited to 'sys/kern/uipc_mbuf.c')
| -rw-r--r-- | sys/kern/uipc_mbuf.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/sys/kern/uipc_mbuf.c b/sys/kern/uipc_mbuf.c index c95648a262a..df1c2be80b1 100644 --- a/sys/kern/uipc_mbuf.c +++ b/sys/kern/uipc_mbuf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uipc_mbuf.c,v 1.86 2007/09/26 13:05:52 henning Exp $ */ +/* $OpenBSD: uipc_mbuf.c,v 1.87 2007/11/27 16:38:50 tedu Exp $ */ /* $NetBSD: uipc_mbuf.c,v 1.15.4.1 1996/06/13 17:11:44 cgd Exp $ */ /* @@ -1037,3 +1037,23 @@ m_apply(struct mbuf *m, int off, int len, return (0); } + +int +m_leadingspace(struct mbuf *m) +{ + if (M_READONLY((m))) + return 0; + return ((m)->m_flags & M_EXT ? (m)->m_data - (m)->m_ext.ext_buf : + (m)->m_flags & M_PKTHDR ? (m)->m_data - (m)->m_pktdat : + (m)->m_data - (m)->m_dat); +} + +int +m_trailingspace(struct mbuf *m) +{ + if (M_READONLY(m)) + return 0; + return ((m)->m_flags & M_EXT ? (m)->m_ext.ext_buf + + (m)->m_ext.ext_size - ((m)->m_data + (m)->m_len) : + &(m)->m_dat[MLEN] - ((m)->m_data + (m)->m_len)); +} |