accdb3810d
This commit adds new if_alloc_domain() and if_alloc_dev() methods to allocate ifnets. When called with a domain on a NUMA machine, ifalloc_domain() will record the NUMA domain in the ifnet, and it will allocate the ifnet struct from memory which is local to that NUMA node. Similarly, if_alloc_dev() is a wrapper for if_alloc_domain which uses a driver supplied device_t to call ifalloc_domain() with the appropriate domain. Note that the new if_numa_domain field fits in an alignment pad in struct ifnet, and so does not alter the size of the structure. Reviewed by: glebius, kib, markj Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D19930
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