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Kernel: Implement IP multicast support

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An IP socket can now join a multicast group by using the
IP_ADD_MEMBERSHIP sockopt, which will cause it to start receiving
packets sent to the multicast address, even though this address does
not belong to this host.
This commit is contained in:
Sergey Bugaev 2021-05-04 14:42:47 +03:00 • committed by Andreas Kling
parent b9c367e13b
commit 78459b92d5
5 changed files with 77 additions and 7 deletions
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8
Userland/Libraries/LibC/netinet/in.h
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@ -22,6 +22,9 @@ in_addr_t inet_addr(const char*);
#define IN_LOOPBACKNET 127
#define IP_TTL 2
#define IP_MULTICAST_LOOP 3
#define IP_ADD_MEMBERSHIP 4
#define IP_DROP_MEMBERSHIP 5
#define IPPORT_RESERVED 1024
#define IPPORT_USERRESERVED 5000
@ -39,6 +42,11 @@ struct sockaddr_in {
char sin_zero[8];
};
struct ip_mreq {
struct in_addr imr_multiaddr;
struct in_addr imr_interface;
};
struct in6_addr {
uint8_t s6_addr[16];
};