This patch sets implements an ILA host side resolver. This uses LWT to implement the hook to a userspace resolver and tracks pending unresolved address using the backend net resolver.
This patch set contains: - An new library function to allocate an array of spinlocks for use with locking hash buckets. - Make hash function in rhashtable directly callable. - A generic resolver backend infrastructure. This primary does two things: track unsesolved addresses and implement a timeout for resolution not happening. These mechanisms provides rate limiting control over resolution requests (for instance in ILA it use used to rate limit requests to userspace to resolve addresses). - The ILA resolver. This is implements to path from the kernel ILA implementation to a userspace daemon that an identifier address needs to be resolved. Tom Herbert (6): spinlock: Add library function to allocate spinlock buckets array rhashtable: Call library function alloc_bucket_locks ila: Call library function alloc_bucket_locks rhashtable: abstract out function to get hash net: Generic resolver backend ila: Resolver mechanism include/linux/rhashtable.h | 28 +++-- include/linux/spinlock.h | 6 + include/net/resolver.h | 58 +++++++++ include/uapi/linux/lwtunnel.h | 1 + include/uapi/linux/rtnetlink.h | 5 + lib/Makefile | 2 +- lib/bucket_locks.c | 63 ++++++++++ lib/rhashtable.c | 46 +------ net/Kconfig | 4 + net/core/Makefile | 1 + net/core/resolver.c | 267 +++++++++++++++++++++++++++++++++++++++++ net/ipv6/Kconfig | 1 + net/ipv6/ila/Makefile | 2 +- net/ipv6/ila/ila.h | 16 +++ net/ipv6/ila/ila_common.c | 7 ++ net/ipv6/ila/ila_lwt.c | 9 ++ net/ipv6/ila/ila_resolver.c | 192 +++++++++++++++++++++++++++++ net/ipv6/ila/ila_xlat.c | 51 ++------ 18 files changed, 666 insertions(+), 93 deletions(-) create mode 100644 include/net/resolver.h create mode 100644 lib/bucket_locks.c create mode 100644 net/core/resolver.c create mode 100644 net/ipv6/ila/ila_resolver.c -- 2.8.0.rc2
