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86e39e0448
Include into the path manager status a bitmap tracking the list of local endpoints still available - not yet used - for the relevant mptcp socket. Keep such map updated at endpoint creation/deletion time, so that we can easily skip already used endpoint at local address selection time. The endpoint used by the initial subflow is lazyly accounted at subflow creation time: the usage bitmap is be up2date before endpoint selection and we avoid such unneeded task in some relevant scenarios - e.g. busy servers accepting incoming subflows but not creating any additional ones nor annuncing additional addresses. Overall this allows for fair local endpoints usage in case of subflow failure. As a side effect, this patch also enforces that each endpoint is used at most once for each mptcp connection. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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