mptcp: provide rmem[0] limit
The mptcp proto struct currently does not provide the required limit for forward memory scheduling. Under pressure sk_rmem_schedule() will unconditionally try to use such field and will oops. Address the issue inheriting the tcp limit, as we already do for the wmem one. Fixes: 9c3f94e1 ("mptcp: add missing memory scheduling in the rx path") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Link: https://lore.kernel.org/r/37af798bd46f402fb7c79f57ebbdd00614f5d7fa.1604861097.git.pabeni@redhat.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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