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macvtap: work-around for 2.6.32 and older kernels
This patch works around a recent extension of the netlink driver I had made use of when building the netlink messages. Unfortunately older kernels don't accept IFLA_IFNAME + name of interface as a replacement for the interface's index, so this patch now gets the interface index ifindex if it's not provided (ifindex <= 0).
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@ -905,6 +905,9 @@ ifaceGetNthParent(int ifindex, const char *ifname, unsigned int nthParent,
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*nth = 0;
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*nth = 0;
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if (ifindex <= 0 && ifaceGetIndex(true, ifname, &ifindex) != 0)
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return 1;
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while (!end && i <= nthParent) {
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while (!end && i <= nthParent) {
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rc = link_dump(true, ifname, ifindex, tb, &recvbuf);
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rc = link_dump(true, ifname, ifindex, tb, &recvbuf);
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if (rc)
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if (rc)
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