From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E64E71D526 for ; Thu, 12 Oct 2023 14:36:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BIB4peZR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5D18C433C7; Thu, 12 Oct 2023 14:36:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697121399; bh=0BFNo+tDLu1H+ZtjzyrNMbnYiZiWevuPRTHQpZtuteI=; h=Date:Subject:To:References:From:In-Reply-To:From; b=BIB4peZRGEC2GEBmbEKAuB6H+aPusuMlIGhBwrYBrp+SKMeI8gyvSL8s/m4pm0M+1 PMCIwTKr9nI9CdQN78rKFBQsdvRwWRh6oCD/gAhOPUmQw4D08YhBQk/lRDdfb9+xnV wJ39Fmg9myF1bX2tQ0tYdSqTpbGLHUw6RFeam9rN6WcBeovlMDHZ3fWo2i5svTD+70 2NuRBPjUe5qgwi3MNi62KI4eokdaLxvc3DCa1VdZ84CMkNzt5ECfcmxo1ccl4Qd7+J efo/n7Das92G+P8IPYPxZiFYYBBUVy7kAIgCybzlbsa5vqCvhW3lDmcBp6gH9ux3rA bkxna8v2z0Gmw== Message-ID: <5598412e-d08b-4fb7-8fef-893815e70405@kernel.org> Date: Thu, 12 Oct 2023 16:36:38 +0200 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH mptcp-next v15 3/7] Squash to "mptcp: add mptcpi_subflows_total counter" Content-Language: en-GB, fr-BE To: Geliang Tang , mptcp@lists.linux.dev References: <6e9e20ed1350ac793b682042ae32be6808c1a1e4.1697100600.git.geliang.tang@suse.com> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; keydata= xsFNBFXj+ekBEADxVr99p2guPcqHFeI/JcFxls6KibzyZD5TQTyfuYlzEp7C7A9swoK5iCvf YBNdx5Xl74NLSgx6y/1NiMQGuKeu+2BmtnkiGxBNanfXcnl4L4Lzz+iXBvvbtCbynnnqDDqU c7SPFMpMesgpcu1xFt0F6bcxE+0ojRtSCZ5HDElKlHJNYtD1uwY4UYVGWUGCF/+cY1YLmtfb WdNb/SFo+Mp0HItfBC12qtDIXYvbfNUGVnA5jXeWMEyYhSNktLnpDL2gBUCsdbkov5VjiOX7 CRTkX0UgNWRjyFZwThaZADEvAOo12M5uSBk7h07yJ97gqvBtcx45IsJwfUJE4hy8qZqsA62A nTRflBvp647IXAiCcwWsEgE5AXKwA3aL6dcpVR17JXJ6nwHHnslVi8WesiqzUI9sbO/hXeXw TDSB+YhErbNOxvHqCzZEnGAAFf6ges26fRVyuU119AzO40sjdLV0l6LE7GshddyazWZf0iac nEhX9NKxGnuhMu5SXmo2poIQttJuYAvTVUNwQVEx/0yY5xmiuyqvXa+XT7NKJkOZSiAPlNt6 VffjgOP62S7M9wDShUghN3F7CPOrrRsOHWO/l6I/qJdUMW+MHSFYPfYiFXoLUZyPvNVCYSgs 3oQaFhHapq1f345XBtfG3fOYp1K2wTXd4ThFraTLl8PHxCn4ywARAQABzSRNYXR0aGlldSBC YWVydHMgPG1hdHR0YmVAa2VybmVsLm9yZz7CwY4EEwEIADgWIQToy4X3aHcFem4n93r2t4JP QmmgcwUCZR5+DwIbAwULCQgHAgYVCgkICwIEFgIDAQIeAQIXgAAKCRD2t4JPQmmgc+ixEACj 5QmhXP+mWcO9HZjmHonVDjcn0nfdqPSVNFDrSycFg12WfrshKy79emnCcJC9I1R/DOR1rjx2 vFPmObgGE+mmUzmF3H/FykitLLzVX7FAAbPyBRFuVYR54RJKIpV9R+u+mGYVTvNXrP0bSZkD 6yCP2IOhXC+nm5j+i9V87f1Bb0NP1zENISIZQahY8n4bADdiaW2A3qvFBSNN+4i/oxNBmfFH 9lylP9g9QX4WCno8E1KbwvX/vL2Q+PNDugh6dpnQiMRg/At1J+g8GE3Qc7wnCOKv6bmZfv0n Pj12KqIC/RAUTifdOrW5NS2q7Gcvppw/yRJOfuVv7zKcnLoyuh0cImVGptOi/hq43HNik1nm qamzIyJjjp9+QGtza6dMEwFbnMNbK8AngwfWwVlQ4kcJmmVg/9ee4Bd1bY9GCja7S5GQ741S yRu+EnmyynIFEpSHVYO5wkajFws7A0vx+3R7gsFbqoRz65sD+vLQtaSiZntNN4LBT52K1U3h 9UxUkXEYkacbhjYH8RSfREJUoRLcFIEItRK7ZmHyFptzdBitxJOmG/adwzfkE/APKWErD1OZ o5N1eBeXbBJxOfUI61gwI4V+hmNjyY9ZMVmYL7glfNuQaHxphBlWsXKUVlHBprt3HCmyZk5M T0V8YWIYT0rFkGtfDpGRZpqfheYVNXbcjM7BTQRV4/npARAA5+u/Sx1n9anIqcgHpA7l5SUC P1e/qF7n5DK8LiM10gYglgY0XHOBi0S7vHppH8hrtpizx+7t5DBdPJgVtR6SilyK0/mp9nWH Dhc9rwU3KmHYgFFsnX58eEmZxz2qsIY8juFor5r7kpcM5dRR9aB+HjlOOJJgyDxcJTwM1ey4 L/79P72wuXRhMibN14SX6TZzf+/XIOrM6TsULVJEIv1+NdczQbs6pBTpEK/G2apME7vfmjTs ZU26Ezn+LDMX16lHTmIJi7Hlh7eifCGGM+g/AlDV6aWKFS+sBbwy+YoS0Zc3Yz8zrdbiKzn3 kbKd+99//mysSVsHaekQYyVvO0KD2KPKBs1S/ImrBb6XecqxGy/y/3HWHdngGEY2v2IPQox7 mAPznyKyXEfG+0rrVseZSEssKmY01IsgwwbmN9ZcqUKYNhjv67WMX7tNwiVbSrGLZoqfXlgw 4aAdnIMQyTW8nE6hH/Iwqay4S2str4HZtWwyWLitk7N+e+vxuK5qto4AxtB7VdimvKUsx6kQ O5F3YWcC3vCXCgPwyV8133+fIR2L81R1L1q3swaEuh95vWj6iskxeNWSTyFAVKYYVskGV+OT tB71P1XCnb6AJCW9cKpC25+zxQqD2Zy0dK3u2RuKErajKBa/YWzuSaKAOkneFxG3LJIvHl7i qPF+JDCjB5sAEQEAAcLBXwQYAQIACQUCVeP56QIbDAAKCRD2t4JPQmmgc5VnD/9YgbCrHR1F bMbm7td54UrYvZV/i7m3dIQNXK2e+Cbv5PXf19ce3XluaE+wA8D+vnIW5mbAAiojt3Mb6p0W JS3QzbObzHNgAp3zy/L4lXwc6WW5vnpWAzqXFHP8D9PTpqvBALbXqL06smP47JqbyQxjXf7D 2rrPeIqbYmVY9da1KzMOVf3gReazYa89zZSdVkMojfWsbq05zwYU+SCWS3NiyF6QghbWvoxb FwX1i/0xRwJiX9NNbRj1huVKQuS4W7rbWA87TrVQPXUAdkyd7FRYICNW+0gddysIwPoaKrLf x3Ba6Rpx0JznbrVOtXlihjl4KV8mtOPjYDY9u+8x412xXnlGl6AC4HLu2F3ECkamY4G6Uxej X+E6vW6Xe4n7H+rEX5UFgPRdYkS1TA/X3nMen9bouxNsvIJv7C6adZmMHqu/2azX7S7Ivrxx ySzOw9GxjoVTuzWMKWpDGP8n71IFeOot8JuPZtJ8omz+DZel+WCNZMVdVNLPOd5frqOvmpz0 VhFAlNTjU1Vy0CnuxX3AM51J8dpdNyG0S8rADh6C8AKCDOfUstpq28/6oTaQv7QZdge0JY6d glzGKnCi/zsmp2+1w559frz4+IC7j/igvJGX4KDDKUs0mlld8J2u2sBXv7CGxdzQoHazlzVb Fe7fduHbABmYz9cefQpO7wDE/Q== Organization: Tessares In-Reply-To: <6e9e20ed1350ac793b682042ae32be6808c1a1e4.1697100600.git.geliang.tang@suse.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Geliang, Thank you for the new version! On 12/10/2023 10:52, Geliang Tang wrote: > When the socket shuts down, it's state is TCPF_FIN_WAIT2. Add this into Good point, but is it not first TCP_FIN_WAIT1? (then FIN_WAIT2, etc.) > __mptcp_has_initial_subflow. > > Signed-off-by: Geliang Tang > --- > net/mptcp/protocol.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h > index 6508179e94a6..ccb97b747527 100644 > --- a/net/mptcp/protocol.h > +++ b/net/mptcp/protocol.h > @@ -1081,7 +1081,8 @@ static inline bool __mptcp_has_initial_subflow(const struct mptcp_sock *msk) > { > struct sock *ssk = READ_ONCE(msk->first); > > - return ssk && inet_sk_state_load(ssk) != TCP_CLOSE; > + return ssk && > + !((1 << inet_sk_state_load(ssk)) & (TCPF_FIN_WAIT2 | TCPF_CLOSE)); I see that we decrement "msk->pm.subflows" when we start closing the subflow. To be coherent with this counter -- and also because there are more "close/closing" state, should we not have: inet_sk_state_load(ssk) != TCP_ESTABLISHED; Cheers, Matt -- Tessares | Belgium | Hybrid Access Solutions www.tessares.net