diff options
Diffstat (limited to 'sys/netinet/igmp.c')
| -rw-r--r-- | sys/netinet/igmp.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/netinet/igmp.c b/sys/netinet/igmp.c index 78b426c..f372085 100644 --- a/sys/netinet/igmp.c +++ b/sys/netinet/igmp.c @@ -34,7 +34,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * @(#)igmp.c 8.1 (Berkeley) 7/19/93 + * @(#)igmp.c 8.2 (Berkeley) 5/3/95 */ /* Internet Group Management Protocol (IGMP) routines. */ @@ -286,12 +286,16 @@ igmp_sendreport(inm) ip->ip_src.s_addr = INADDR_ANY; ip->ip_dst = inm->inm_addr; - igmp = (struct igmp *)(ip + 1); + m->m_data += sizeof(struct ip); + m->m_len -= sizeof(struct ip); + igmp = mtod(m, struct igmp *); igmp->igmp_type = IGMP_HOST_MEMBERSHIP_REPORT; igmp->igmp_code = 0; igmp->igmp_group = inm->inm_addr; igmp->igmp_cksum = 0; igmp->igmp_cksum = in_cksum(m, IGMP_MINLEN); + m->m_data -= sizeof(struct ip); + m->m_len += sizeof(struct ip); imo = &simo; bzero((caddr_t)imo, sizeof(*imo)); |
