diff options
Diffstat (limited to 'networking/ping6.c')
| -rw-r--r-- | networking/ping6.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/networking/ping6.c b/networking/ping6.c index dec3b426a..a92387e79 100644 --- a/networking/ping6.c +++ b/networking/ping6.c @@ -77,8 +77,7 @@ static void ping(const char *host) pkt->icmp6_type = ICMP6_ECHO_REQUEST; sockopt = offsetof(struct icmp6_hdr, icmp6_cksum); - setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, (char *) &sockopt, - sizeof(sockopt)); + setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt)); c = sendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr), 0, (struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in6)); @@ -312,6 +311,7 @@ static void unpack(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit fflush(stdout); } +extern int BUG_bad_offsetof_icmp6_cksum(void); static void ping(const char *host) { char packet[datalen + MAXIPLEN + MAXICMPLEN]; @@ -353,18 +353,15 @@ static void ping(const char *host) /* set recv buf for broadcast pings */ sockopt = 48 * 1024; /* explain why 48k? */ - setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, (char *) &sockopt, - sizeof(sockopt)); + setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt)); - sockopt = 2; /* iputils-ss020927 does this */ sockopt = offsetof(struct icmp6_hdr, icmp6_cksum); - setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, (char *) &sockopt, - sizeof(sockopt)); + if (offsetof(struct icmp6_hdr, icmp6_cksum) != 2) + BUG_bad_offsetof_icmp6_cksum(); + setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt)); /* request ttl info to be returned in ancillary data */ - sockopt = 1; - setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, (char *) &sockopt, - sizeof(sockopt)); + setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, &const_int_1, sizeof(const_int_1)); if (if_index) pingaddr.sin6_scope_id = if_index; |