diff options
| -rw-r--r-- | sys/net/if_loop.c | 37 |
1 files changed, 15 insertions, 22 deletions
diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c index b78b146..7158b3d 100644 --- a/sys/net/if_loop.c +++ b/sys/net/if_loop.c @@ -192,6 +192,7 @@ looutput(ifp, m, dst, rt) struct sockaddr *dst; register struct rtentry *rt; { + struct mbuf *n; M_ASSERTPKTHDR(m); /* check if we have the packet header */ @@ -204,30 +205,22 @@ looutput(ifp, m, dst, rt) * KAME requires that the packet to be contiguous on the * mbuf. We need to make that sure. * this kind of code should be avoided. - * XXX: fails to join if interface MTU > MCLBYTES. jumbogram? + * + * XXX: KAME may no longer need contiguous packets. Once + * that has been verified, the following code _should_ be + * removed. */ - if (m && m->m_next != NULL && m->m_pkthdr.len < MCLBYTES) { - struct mbuf *n; - - /* XXX MT_HEADER should be m->m_type */ - MGETHDR(n, M_DONTWAIT, MT_HEADER); - if (!n) - goto contiguousfail; - M_MOVE_PKTHDR(n, m); - MCLGET(n, M_DONTWAIT); - if (! (n->m_flags & M_EXT)) { - m_freem(n); - goto contiguousfail; - } - m_copydata(m, 0, n->m_pkthdr.len, mtod(n, caddr_t)); - n->m_len = n->m_pkthdr.len; - m_freem(m); - m = n; - } - if (0) { -contiguousfail: - printf("looutput: mbuf allocation failed\n"); + if (m && m->m_next != NULL) { + + n = m_defrag(m, M_DONTWAIT); + + if (n == NULL) { + m_freem(m); + return (ENOBUFS); + } else { + m = n; + } } ifp->if_opackets++; |
