mirror of https://gitee.com/openkylin/linux.git
52557dbc75
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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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| crypto.c | ||
| crypto_test.c | ||
| ctrl.c | ||
| diag.c | ||
| 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 | ||