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Add iso88025_resolvemulti().

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Cribbed from net/if_fddisubr.c
This commit is contained in:
Matthew N. Dodd 2003-03-15 16:49:08 +00:00
parent bf54cb290a
commit 7c16bd3a8b
1 changed files with 87 additions and 0 deletions
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87
sys/net/if_iso88025subr.c
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@ -77,6 +77,9 @@
#include <netipx/ipx_if.h>
#endif
static int iso88025_resolvemulti (struct ifnet *, struct sockaddr **,
struct sockaddr *));
#define IFP2AC(IFP) ((struct arpcom *)IFP)
void
@ -532,6 +535,90 @@ iso88025_input(ifp, th, m)
netisr_dispatch(isr, m);
}
static int
iso88025_resolvemulti (ifp, llsa, sa)
struct ifnet *ifp;
struct sockaddr **llsa;
struct sockaddr *sa;
{
struct sockaddr_dl *sdl;
struct sockaddr_in *sin;
#ifdef INET6
struct sockaddr_in6 *sin6;
#endif
u_char *e_addr;
switch(sa->sa_family) {
case AF_LINK:
/*
* No mapping needed. Just check that it's a valid MC address.
*/
sdl = (struct sockaddr_dl *)sa;
e_addr = LLADDR(sdl);
if ((e_addr[0] & 1) != 1) {
return (EADDRNOTAVAIL);
}
*llsa = 0;
return (0);
#ifdef INET
case AF_INET:
sin = (struct sockaddr_in *)sa;
if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
return (EADDRNOTAVAIL);
}
MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
M_WAITOK|M_ZERO);
sdl->sdl_len = sizeof *sdl;
sdl->sdl_family = AF_LINK;
sdl->sdl_index = ifp->if_index;
sdl->sdl_type = IFT_ISO88025;
sdl->sdl_alen = ISO88025_ADDR_LEN;
e_addr = LLADDR(sdl);
ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
*llsa = (struct sockaddr *)sdl;
return (0);
#endif
#ifdef INET6
case AF_INET6:
sin6 = (struct sockaddr_in6 *)sa;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
/*
* An IP6 address of 0 means listen to all
* of the Ethernet multicast address used for IP6.
* (This is used for multicast routers.)
*/
ifp->if_flags |= IFF_ALLMULTI;
*llsa = 0;
return (0);
}
if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
return (EADDRNOTAVAIL);
}
MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
M_WAITOK|M_ZERO);
sdl->sdl_len = sizeof *sdl;
sdl->sdl_family = AF_LINK;
sdl->sdl_index = ifp->if_index;
sdl->sdl_type = IFT_ISO88025;
sdl->sdl_alen = ISO88025_ADDR_LEN;
e_addr = LLADDR(sdl);
ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
*llsa = (struct sockaddr *)sdl;
return (0);
#endif
default:
/*
* Well, the text isn't quite right, but it's the name
* that counts...
*/
return (EAFNOSUPPORT);
}
return (0);
}
static moduledata_t iso88025_mod = {
"iso88025",
NULL,