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[2a03:2880:31ff:d::face:b00c]) by smtp.gmail.com with ESMTPSA id 8-20020a05600c230800b003f7ed9dae70sm17145918wmo.0.2023.06.14.04.10.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jun 2023 04:10:22 -0700 (PDT) From: Breno Leitao To: io-uring@vger.kernel.org, axboe@kernel.dk, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, Willem de Bruijn , David Ahern Cc: leit@fb.com, asml.silence@gmail.com, matthieu.baerts@tessares.net, martineau@kernel.org, marcelo.leitner@gmail.com, lucien.xin@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dccp@vger.kernel.org, mptcp@lists.linux.dev, linux-sctp@vger.kernel.org, ast@kernel.org, kuniyu@amazon.com, martin.lau@kernel.org Subject: [RFC PATCH v2 2/4] net: add uring_cmd callback to UDP Date: Wed, 14 Jun 2023 04:07:55 -0700 Message-Id: <20230614110757.3689731-3-leitao@debian.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230614110757.3689731-1-leitao@debian.org> References: <20230614110757.3689731-1-leitao@debian.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This is the implementation of uring_cmd for the UDP protocol. It basically encompasses SOCKET_URING_OP_SIOCOUTQ and SOCKET_URING_OP_SIOCINQ, which is the io_uring representation for SIOCOUTQ and SIOCINQ. SIOCINQ and SIOCOUTQ are the only two CMDs handled by udp_ioctl(). Signed-off-by: Breno Leitao --- include/net/udp.h | 2 ++ include/uapi/linux/net.h | 5 +++++ net/ipv4/udp.c | 22 ++++++++++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/include/net/udp.h b/include/net/udp.h index 10d94a42117b..046ca7231d27 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -285,6 +285,8 @@ int udp_cmsg_send(struct sock *sk, struct msghdr *msg, u16 *gso_size); void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst); int udp_rcv(struct sk_buff *skb); int udp_ioctl(struct sock *sk, int cmd, int *karg); +int udp_uring_cmd(struct sock *sk, struct io_uring_cmd *cmd, + unsigned int issue_flags); int udp_init_sock(struct sock *sk); int udp_pre_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len); int __udp_disconnect(struct sock *sk, int flags); diff --git a/include/uapi/linux/net.h b/include/uapi/linux/net.h index 4dabec6bd957..dd8e7ced7d24 100644 --- a/include/uapi/linux/net.h +++ b/include/uapi/linux/net.h @@ -55,4 +55,9 @@ typedef enum { #define __SO_ACCEPTCON (1 << 16) /* performed a listen */ +enum { + SOCKET_URING_OP_SIOCINQ = 0, + SOCKET_URING_OP_SIOCOUTQ, +}; + #endif /* _UAPI_LINUX_NET_H */ diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 6a09757f287b..5e06b6de1c08 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -113,6 +113,7 @@ #include #include #include +#include #if IS_ENABLED(CONFIG_IPV6) #include #endif @@ -1687,6 +1688,26 @@ static int first_packet_length(struct sock *sk) return res; } +int udp_uring_cmd(struct sock *sk, struct io_uring_cmd *cmd, + unsigned int issue_flags) +{ + int ret; + + switch (cmd->sqe->cmd_op) { + case SOCKET_URING_OP_SIOCINQ: + if (udp_ioctl(sk, SIOCINQ, &ret)) + return -EFAULT; + return ret; + case SOCKET_URING_OP_SIOCOUTQ: + if (udp_ioctl(sk, SIOCOUTQ, &ret)) + return -EFAULT; + return ret; + default: + return -ENOIOCTLCMD; + } +} +EXPORT_SYMBOL_GPL(udp_uring_cmd); + /* * IOCTL requests applicable to the UDP protocol */ @@ -2925,6 +2946,7 @@ struct proto udp_prot = { .connect = ip4_datagram_connect, .disconnect = udp_disconnect, .ioctl = udp_ioctl, + .uring_cmd = udp_uring_cmd, .init = udp_init_sock, .destroy = udp_destroy_sock, .setsockopt = udp_setsockopt, -- 2.34.1