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networkd: add multicast membership to lldp socket (#5282)

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27o 2017-02-09 10:36:13 +01:00 committed by Lennart Poettering
parent 28c78e07aa
commit 6f844e3a3f
1 changed files with 21 additions and 0 deletions
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21
src/libsystemd-network/lldp-network.c
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@ -47,6 +47,13 @@ int lldp_network_bind_raw_socket(int ifindex) {
.filter = (struct sock_filter*) filter,
};
struct packet_mreq mreq = {
.mr_ifindex = ifindex,
.mr_type = PACKET_MR_MULTICAST,
.mr_alen = ETH_ALEN,
.mr_address = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 }
};
union sockaddr_union saddrll = {
.ll.sll_family = AF_PACKET,
.ll.sll_ifindex = ifindex,
@ -66,6 +73,20 @@ int lldp_network_bind_raw_socket(int ifindex) {
if (r < 0)
return -errno;
r = setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
if (r < 0)
return -errno;
mreq.mr_address[ETH_ALEN - 1] = 0x03;
r = setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
if (r < 0)
return -errno;
mreq.mr_address[ETH_ALEN - 1] = 0x0E;
r = setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
if (r < 0)
return -errno;
r = bind(fd, &saddrll.sa, sizeof(saddrll.ll));
if (r < 0)
return -errno;