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| author | Paolo Abeni <pabeni@redhat.com> | 2024-12-30 21:12:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-09 15:33:55 +0300 |
| commit | 8353226fe3ca9e0861aab2e256fcb18c754981fd (patch) | |
| tree | 9a3115640e4bca9e7448fbf23ffc7b9ade8e32a6 /net/unix/sysctl_net_unix.c | |
| parent | fb08e6b0ba284e3dcdc9378de26dcb51d90710f5 (diff) | |
| download | linux-8353226fe3ca9e0861aab2e256fcb18c754981fd.tar.xz | |
mptcp: fix recvbuffer adjust on sleeping rcvmsg
commit 449e6912a2522af672e99992e1201a454910864e upstream.
If the recvmsg() blocks after receiving some data - i.e. due to
SO_RCVLOWAT - the MPTCP code will attempt multiple times to
adjust the receive buffer size, wrongly accounting every time the
cumulative of received data - instead of accounting only for the
delta.
Address the issue moving mptcp_rcv_space_adjust just after the
data reception and passing it only the just received bytes.
This also removes an unneeded difference between the TCP and MPTCP
RX code path implementation.
Fixes: 581302298524 ("mptcp: error out earlier on disconnect")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241230-net-mptcp-rbuf-fixes-v1-1-8608af434ceb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix/sysctl_net_unix.c')
0 files changed, 0 insertions, 0 deletions