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net: also flag accepted sockets supporting msghdr originated zerocopy
commit71b7786ea4
upstream. Without this only the client initiated tcp sockets have SOCK_SUPPORT_ZC. The listening socket on the server also has it, but the accepted connections didn't, which meant IORING_OP_SEND[MSG]_ZC will always fails with -EOPNOTSUPP. Fixes:e993ffe3da
("net: flag sockets supporting msghdr originated zerocopy") Cc: <stable@vger.kernel.org> # 6.0 CC: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/io-uring/20221024141503.22b4e251@kernel.org/T/#m38aa19b0b825758fb97860a38ad13122051f9dda Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -748,6 +748,8 @@ int inet_accept(struct socket *sock, struct socket *newsock, int flags,
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(TCPF_ESTABLISHED | TCPF_SYN_RECV |
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TCPF_CLOSE_WAIT | TCPF_CLOSE)));
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if (test_bit(SOCK_SUPPORT_ZC, &sock->flags))
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set_bit(SOCK_SUPPORT_ZC, &newsock->flags);
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sock_graft(sk2, newsock);
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newsock->state = SS_CONNECTED;
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