Lock the interface address list while iterating a network interface's
address list when searching for a link-layer address to use during uuid generation. MFC after: 2 weeks
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22037b2d2c
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e5a9a8ead8
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=191279
@ -101,16 +101,19 @@ uuid_node(uint16_t *node)
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IFNET_RLOCK();
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TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
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/* Walk the address list */
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IF_ADDR_LOCK(ifp);
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TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
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sdl = (struct sockaddr_dl*)ifa->ifa_addr;
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if (sdl != NULL && sdl->sdl_family == AF_LINK &&
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sdl->sdl_type == IFT_ETHER) {
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/* Got a MAC address. */
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bcopy(LLADDR(sdl), node, UUID_NODE_LEN);
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IF_ADDR_UNLOCK(ifp);
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IFNET_RUNLOCK();
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return;
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}
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}
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IF_ADDR_UNLOCK(ifp);
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}
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IFNET_RUNLOCK();
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