diff options
Diffstat (limited to 'freebsd/sys/netinet/ip_output.c')
| -rw-r--r-- | freebsd/sys/netinet/ip_output.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/freebsd/sys/netinet/ip_output.c b/freebsd/sys/netinet/ip_output.c index a70d3142..93ebf4d6 100644 --- a/freebsd/sys/netinet/ip_output.c +++ b/freebsd/sys/netinet/ip_output.c @@ -869,17 +869,13 @@ in_delayed_cksum(struct mbuf *m) csum = 0xffff; offset += m->m_pkthdr.csum_data; /* checksum offset */ - if (offset + sizeof(u_short) > m->m_len) { - printf("delayed m_pullup, m->len: %d off: %d p: %d\n", - m->m_len, offset, ip->ip_p); - /* - * XXX - * this shouldn't happen, but if it does, the - * correct behavior may be to insert the checksum - * in the appropriate next mbuf in the chain. - */ - return; + /* find the mbuf in the chain where the checksum starts*/ + while ((m != NULL) && (offset >= m->m_len)) { + offset -= m->m_len; + m = m->m_next; } + KASSERT(m != NULL, ("in_delayed_cksum: checksum outside mbuf chain.")); + KASSERT(offset + sizeof(u_short) <= m->m_len, ("in_delayed_cksum: checksum split between mbufs.")); *(u_short *)(m->m_data + offset) = csum; } |