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![]() MPJ subflows are not exposed as fds to user spaces. As such,
incoming MPJ subflows are removed from the accept queue by
tcp_check_req()/tcp_get_cookie_sock().
Later tcp_child_process() invokes subflow_data_ready() on the
parent socket regardless of the subflow kind, leading to poll
wakeups even if the later accept will block.
Address the issue by double-checking the queue state before
waking the user-space.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/164
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes:
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.. | ||
crypto.c | ||
crypto_test.c | ||
ctrl.c | ||
diag.c | ||
Kconfig | ||
Makefile | ||
mib.c | ||
mib.h | ||
mptcp_diag.c | ||
options.c | ||
pm.c | ||
pm_netlink.c | ||
protocol.c | ||
protocol.h | ||
subflow.c | ||
syncookies.c | ||
token.c | ||
token_test.c |