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set ISC_SOCKEVENTATTR_MULTICAST on packets received from a multicast address

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This commit is contained in:
Michael Graff
2000-06-15 18:25:49 +00:00
parent 6c6a62933d
commit f64ded0ac7
2 changed files with 20 additions and 0 deletions
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2
lib/isc/include/isc/socket.h
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@@ -122,6 +122,7 @@ struct isc_socket_connev {
* all the data is valid. * all the data is valid.
* _TIMESTAMP: The timestamp member is valid. * _TIMESTAMP: The timestamp member is valid.
* _PKTINFO: The pktinfo member is valid. * _PKTINFO: The pktinfo member is valid.
* _MULTICAST: The UDP packet was received via a multicast transmission.
*/ */
#define ISC_SOCKEVENTATTR_ATTACHED 0x80000000U /* internal */ #define ISC_SOCKEVENTATTR_ATTACHED 0x80000000U /* internal */
#define ISC_SOCKEVENTATTR_FATALERROR 0x40000000U /* sock is dead */ #define ISC_SOCKEVENTATTR_FATALERROR 0x40000000U /* sock is dead */
@@ -129,6 +130,7 @@ struct isc_socket_connev {
#define ISC_SOCKEVENTATTR_CTRUNC 0x00400000U /* public */ #define ISC_SOCKEVENTATTR_CTRUNC 0x00400000U /* public */
#define ISC_SOCKEVENTATTR_TIMESTAMP 0x00200000U /* public */ #define ISC_SOCKEVENTATTR_TIMESTAMP 0x00200000U /* public */
#define ISC_SOCKEVENTATTR_PKTINFO 0x00100000U /* public */ #define ISC_SOCKEVENTATTR_PKTINFO 0x00100000U /* public */
#define ISC_SOCKEVENTATTR_MULTICAST 0x00080000U /* public */
#define ISC_SOCKEVENT_ANYEVENT (0) #define ISC_SOCKEVENT_ANYEVENT (0)
#define ISC_SOCKEVENT_RECVDONE (ISC_EVENTCLASS_SOCKET + 1) #define ISC_SOCKEVENT_RECVDONE (ISC_EVENTCLASS_SOCKET + 1)

18
lib/isc/unix/socket.c
View File

@@ -366,6 +366,12 @@ process_cmsg(isc_socket_t *sock, struct msghdr *msg, isc_socketevent_t *dev) {
dev->attributes |= ISC_SOCKEVENTATTR_CTRUNC; dev->attributes |= ISC_SOCKEVENTATTR_CTRUNC;
#endif #endif
/*
* Check for multicast.
*/
if (isc_sockaddr_ismulticast(&dev->address))
dev->attributes |= ISC_SOCKEVENTATTR_MULTICAST;
#ifndef USE_CMSG #ifndef USE_CMSG
return; return;
#else #else
@@ -1171,6 +1177,15 @@ isc_socket_create(isc_socketmgr_t *manager, int pf, isc_sockettype_t type,
"setsockopt(%d) failed: %s", "setsockopt(%d) failed: %s",
sock->fd, strerror(errno)); sock->fd, strerror(errno));
} }
#ifdef IPV6_USE_MIN_MTU /*2292bis, not too common yet*/
/* use minimum MTU */
if (pf == AF_INET6) {
(void)setsockopt(sock->fd, IPPROTO_IPV6,
IPV6_USE_MIN_MTU,
(void *)&on, sizeof (on));
}
#endif
#endif /* ISC_PLATFORM_HAVEIPV6 */ #endif /* ISC_PLATFORM_HAVEIPV6 */
} }
@@ -2667,6 +2682,9 @@ isc_socket_connect(isc_socket_t *sock, isc_sockaddr_t *addr,
REQUIRE(VALID_MANAGER(manager)); REQUIRE(VALID_MANAGER(manager));
REQUIRE(addr != NULL); REQUIRE(addr != NULL);
if (isc_sockaddr_ismulticast(addr))
return (ISC_R_MULTICAST);
LOCK(&sock->lock); LOCK(&sock->lock);
REQUIRE(!sock->connecting); REQUIRE(!sock->connecting);