From patchwork Wed Mar 11 22:46:13 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: tadeusz.struk@intel.com X-Patchwork-Id: 449226 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 929B0140142 for ; Thu, 12 Mar 2015 09:48:52 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752998AbbCKWsr (ORCPT ); Wed, 11 Mar 2015 18:48:47 -0400 Received: from mga01.intel.com ([192.55.52.88]:1259 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752859AbbCKWsp (ORCPT ); Wed, 11 Mar 2015 18:48:45 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP; 11 Mar 2015 15:48:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,384,1422950400"; d="scan'208";a="663983512" Received: from tstruk-mobl1.intel.com (HELO [127.0.1.1]) ([134.134.171.125]) by orsmga001.jf.intel.com with ESMTP; 11 Mar 2015 15:48:44 -0700 Subject: [PATCH RFC 1/4] net: socket: add support for async operations To: davem@davemloft.net From: Tadeusz Struk Cc: linux-aio@kvack.org, herbert@gondor.apana.org.au, netdev@vger.kernel.org, ying.xue@windriver.com, bcrl@kvack.org, viro@ZenIV.linux.org.uk, linux-fsdevel@vger.kernel.org, hch@lst.de, linux-crypto@vger.kernel.org Date: Wed, 11 Mar 2015 15:46:13 -0700 Message-ID: <20150311224613.23777.27361.stgit@tstruk-mobl1> In-Reply-To: <20150311224607.23777.2181.stgit@tstruk-mobl1> References: <20150311224607.23777.2181.stgit@tstruk-mobl1> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add support for async operations. Signed-off-by: Tadeusz Struk --- include/linux/net.h | 6 +++++ net/socket.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 70 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/include/linux/net.h b/include/linux/net.h index e74114b..8330936 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -25,6 +25,7 @@ #include #include #include +#include #include struct poll_table_struct; @@ -173,6 +174,11 @@ struct proto_ops { */ int (*recvmsg) (struct socket *sock, struct msghdr *m, size_t total_len, int flags); + int (*aio_sendmsg)(struct kiocb *iocb, struct socket *sock, + struct msghdr *m, size_t total_len); + int (*aio_recvmsg)(struct kiocb *iocb, struct socket *sock, + struct msghdr *m, size_t total_len, + int flags); int (*mmap) (struct file *file, struct socket *sock, struct vm_area_struct * vma); ssize_t (*sendpage) (struct socket *sock, struct page *page, diff --git a/net/socket.c b/net/socket.c index 95d3085..fe55112 100644 --- a/net/socket.c +++ b/net/socket.c @@ -132,6 +132,11 @@ static ssize_t sock_splice_read(struct file *file, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); +static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t loff); +static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t loff); + /* * Socket files have a set of 'special' operations as well as the generic file ones. These don't appear * in the operation structures but are done directly via the socketcall() multiplexor. @@ -144,6 +149,8 @@ static const struct file_operations socket_file_ops = { .write = new_sync_write, .read_iter = sock_read_iter, .write_iter = sock_write_iter, + .aio_read = sock_aio_read, + .aio_write = sock_aio_write, .poll = sock_poll, .unlocked_ioctl = sock_ioctl, #ifdef CONFIG_COMPAT @@ -836,6 +843,63 @@ static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from) return res; } +static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t loff) +{ + struct file *file = iocb->ki_filp; + struct socket *sock = file->private_data; + struct iov_iter iter; + struct msghdr msg = {0}; + ssize_t res; + + if (file->f_flags & O_NONBLOCK) + msg.msg_flags = MSG_DONTWAIT; + + if (iocb->ki_pos != 0) + return -ESPIPE; + + if (iocb->ki_nbytes == 0) + return 0; + + if (sock->ops->aio_recvmsg) { + iov_iter_init(&iter, READ, iov, nr_segs, iocb->ki_nbytes); + msg.msg_iter = iter; + res = sock->ops->aio_recvmsg(iocb, sock, &msg, + iocb->ki_nbytes, msg.msg_flags); + } else { + res = -EOPNOTSUPP; + } + return res; +} + +static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t loff) +{ + struct file *file = iocb->ki_filp; + struct socket *sock = file->private_data; + struct iov_iter iter; + struct msghdr msg = {0}; + ssize_t res; + + if (iocb->ki_pos != 0) + return -ESPIPE; + + if (file->f_flags & O_NONBLOCK) + msg.msg_flags = MSG_DONTWAIT; + + if (sock->type == SOCK_SEQPACKET) + msg.msg_flags |= MSG_EOR; + + if (sock->ops->aio_sendmsg) { + iov_iter_init(&iter, WRITE, iov, nr_segs, iocb->ki_nbytes); + msg.msg_iter = iter; + res = sock->ops->aio_sendmsg(iocb, sock, &msg, iocb->ki_nbytes); + } else { + res = -EOPNOTSUPP; + } + return res; +} + /* * Atomic setting of ioctl hooks to avoid race * with module unload.