+++ /dev/null
-/****************************************************************************
- *
- * Copyright 2016 Samsung Electronics All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
- * either express or implied. See the License for the specific
- * language governing permissions and limitations under the License.
- *
- ****************************************************************************/
-/************************************************************************
- * fs/vfs/fs_sendfile.c
- *
- * Copyright (C) 2007, 2009, 2011, 2013 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ************************************************************************/
-
-/************************************************************************
- * Included Files
- ************************************************************************/
-
-#include <tinyara/config.h>
-
-#include <sys/sendfile.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <assert.h>
-
-#include <tinyara/sched.h>
-#include <tinyara/net/net.h>
-
-#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_NET_SENDFILE)
-
-/************************************************************************
- * Private types
- ************************************************************************/
-
-/************************************************************************
- * Private Variables
- ************************************************************************/
-
-/************************************************************************
- * Public Variables
- ************************************************************************/
-
-/************************************************************************
- * Private Functions
- ************************************************************************/
-
-/************************************************************************
- * Public Functions
- ************************************************************************/
-
-/************************************************************************
- * Name: sendfile
- *
- * Description:
- * sendfile() copies data between one file descriptor and another.
- * Used with file descriptors it basically just wraps a sequence of
- * reads() and writes() to perform a copy.
- *
- * If the destination descriptor is a socket, it gives a better
- * performance than simple reds() and writes(). The data is read directly
- * into the net buffer and the whole tcp window is filled if possible.
- *
- * NOTE: This interface is *not* specified in POSIX.1-2001, or other
- * standards. The implementation here is very similar to the Linux
- * sendfile interface. Other UNIX systems implement sendfile() with
- * different semantics and prototypes. sendfile() should not be used
- * in portable programs.
- *
- * Input Parmeters:
- * infd - A file (or socket) descriptor opened for reading
- * outfd - A descriptor opened for writing.
- * offset - If 'offset' is not NULL, then it points to a variable
- * holding the file offset from which sendfile() will start
- * reading data from 'infd'. When sendfile() returns, this
- * variable will be set to the offset of the byte following
- * the last byte that was read. If 'offset' is not NULL,
- * then sendfile() does not modify the current file offset of
- * 'infd'; otherwise the current file offset is adjusted to
- * reflect the number of bytes read from 'infd.'
- *
- * If 'offset' is NULL, then data will be read from 'infd'
- * starting at the current file offset, and the file offset
- * will be updated by the call.
- * count - The number of bytes to copy between the file descriptors.
- *
- * Returned Value:
- * If the transfer was successful, the number of bytes written to outfd is
- * returned. On error, -1 is returned, and errno is set appropriately.
- * There error values are those returned by read() or write() plus:
- *
- * EINVAL - Bad input parameters.
- * ENOMEM - Could not allocated an I/O buffer
- *
- ************************************************************************/
-
-ssize_t sendfile(int outfd, int infd, off_t *offset, size_t count)
-{
-#if defined(CONFIG_NET_TCP) && CONFIG_NSOCKET_DESCRIPTORS > 0
-
- /* Check the destination file descriptor: Is it a (probable) file
- * descriptor? Check the source file: Is it a normal file?
- */
-
- if ((unsigned int)outfd >= CONFIG_NFILE_DESCRIPTORS && (unsigned int)infd < CONFIG_NFILE_DESCRIPTORS) {
- FAR struct file *filep;
-
- /* This appears to be a file-to-socket transfer. Get the file
- * structure.
- */
-
- filep = fs_getfilep(fd);
- if (!filep) {
- /* The errno value has already been set */
-
- return ERROR;
- }
-
- /* Then let net_sendfile do the work. */
-
- return net_sendfile(outfd, filep, offset, count);
- } else
-#endif
- {
- /* No... then this is probably a file-to-file transfer. The generic
- * lib_sendfile() can handle that case.
- */
-
- return lib_sendfile(outfd, infd, offset, count);
- }
-}
-
-#endif /* CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NET_SENDFILE */
+++ /dev/null
-/****************************************************************************
- *
- * Copyright 2016 Samsung Electronics All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
- * either express or implied. See the License for the specific
- * language governing permissions and limitations under the License.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * net/socket/net_sendfile.c
- *
- * Copyright (C) 2013 UVC Ingenieure. All rights reserved.
- * Copyright (C) 2007-2015 Gregory Nutt. All rights reserved.
- * Authors: Gregory Nutt <gnutt@nuttx.org>
- * Max Holtzberg <mh@uvc.de>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <tinyara/config.h>
-
-/* TODO: Support with LWIP socket layer */
-
-#if 0
-#if defined(CONFIG_NET) && defined(CONFIG_NET_TCP)
-
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <debug.h>
-
-#include <arch/irq.h>
-#include <tinyara/clock.h>
-#include <tinyara/fs/fs.h>
-#include <tinyara/net/net.h>
-
-#include "netdev/netdev.h"
-#include "socket/socket.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-#if defined(CONFIG_NET_TCP_SPLIT) && !defined(CONFIG_NET_TCP_SPLIT_SIZE)
-#define CONFIG_NET_TCP_SPLIT_SIZE 40
-#endif
-
-#define TCPIPv4BUF ((struct tcp_hdr_s *)&dev->d_buf[NET_LL_HDRLEN(dev) + IPv4_HDRLEN])
-#define TCPIPv6BUF ((struct tcp_hdr_s *)&dev->d_buf[NET_LL_HDRLEN(dev) + IPv6_HDRLEN])
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/* This structure holds the state of the send operation until it can be
- * operated upon from the interrupt level.
- */
-
-struct sendfile_s {
- FAR struct socket *snd_sock; /* Points to the parent socket structure */
- FAR struct netif_callback_s *snd_datacb; /* Data callback */
- FAR struct netif_callback_s *snd_ackcb; /* ACK callback */
- FAR struct file *snd_file; /* File structure of the input file */
- sem_t snd_sem; /* Used to wake up the waiting thread */
- off_t snd_foffset; /* Input file offset */
- size_t snd_flen; /* File length */
- ssize_t snd_sent; /* The number of bytes sent */
- uint32_t snd_isn; /* Initial sequence number */
- uint32_t snd_acked; /* The number of bytes acked */
-#ifdef CONFIG_NET_SOCKOPTS
- systime_t snd_time; /* Last send time for determining timeout */
-#endif
-};
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Function: sendfile_timeout
- *
- * Description:
- * Check for send timeout.
- *
- * Parameters:
- * pstate send state structure
- *
- * Returned Value:
- * TRUE:timeout FALSE:no timeout
- *
- * Assumptions:
- * Running at the interrupt level
- *
- ****************************************************************************/
-
-#ifdef CONFIG_NET_SOCKOPTS
-static inline int sendfile_timeout(FAR struct sendfile_s *pstate)
-{
- FAR struct socket *psock = 0;
-
- /* Check for a timeout configured via setsockopts(SO_SNDTIMEO).
- * If none... we well let the send wait forever.
- */
-
- psock = pstate->snd_sock;
- if (psock && psock->s_sndtimeo != 0) {
- /* Check if the configured timeout has elapsed */
-
- return net_timeo(pstate->snd_time, psock->s_sndtimeo);
- }
-
- /* No timeout */
-
- return FALSE;
-}
-#endif /* CONFIG_NET_SOCKOPTS */
-
-static uint16_t ack_interrupt(FAR struct net_driver_s *dev, FAR void *pvconn, FAR void *pvpriv, uint16_t flags)
-{
- FAR struct sendfile_s *pstate = (FAR struct sendfile_s *)pvpriv;
-
- nllvdbg("flags: %04x\n", flags);
-
- if ((flags & TCP_ACKDATA) != 0) {
- FAR struct tcp_hdr_s *tcp;
-
-#ifdef CONFIG_NET_SOCKOPTS
- /* Update the timeout */
-
- pstate->snd_time = clock_systimer();
-#endif
-
- /* Get the offset address of the TCP header */
-
-#ifdef CONFIG_NET_IPv6
-#ifdef CONFIG_NET_IPv4
- if (IFF_IS_IPv6(dev->d_flags))
-#endif
- {
- DEBUGASSERT(pstate->snd_sock == PF_INET6);
- tcp = TCPIPv6BUF;
- }
-#endif /* CONFIG_NET_IPv6 */
-
-#ifdef CONFIG_NET_IPv4
-#ifdef CONFIG_NET_IPv6
- else
-#endif
- {
- DEBUGASSERT(pstate->snd_sock == PF_INET);
- tcp = TCPIPv4BUF;
- }
-#endif /* CONFIG_NET_IPv4 */
-
- /* The current acknowledgement number number is the (relative) offset
- * of the of the next byte needed by the receiver. The snd_isn is the
- * offset of the first byte to send to the receiver. The difference
- * is the number of bytes to be acknowledged.
- */
-
- pstate->snd_acked = tcp_getsequence(TCPBUF->ackno) - pstate->snd_isn;
- nllvdbg("ACK: acked=%d sent=%d flen=%d\n", pstate->snd_acked, pstate->snd_sent, pstate->snd_flen);
-
- dev->d_sndlen = 0;
-
- flags &= ~TCP_ACKDATA;
- } else if ((flags & TCP_REXMIT) != 0) {
- nlldbg("REXMIT\n");
-
- /* Yes.. in this case, reset the number of bytes that have been sent
- * to the number of bytes that have been ACKed.
- */
-
- pstate->snd_sent = pstate->snd_acked;
- }
-
- /* Check for a loss of connection */
-
- else if ((flags & (TCP_CLOSE | TCP_ABORT | TCP_TIMEDOUT)) != 0) {
- /* Report not connected */
-
- nlldbg("Lost connection\n");
-
- net_lostconnection(pstate->snd_sock, flags);
- pstate->snd_sent = -ENOTCONN;
- }
-
- /* Wake up the waiting thread */
-
- sem_post(&pstate->snd_sem);
-
- return flags;
-}
-
-/****************************************************************************
- * Function: sendfile_addrcheck
- *
- * Description:
- * Check if the destination IP address is in the IPv4 ARP or IPv6 Neighbor
- * tables. If not, then the send won't actually make it out... it will be
- * replaced with an ARP request (IPv4) or a Neighbor Solicitation (IPv6).
- *
- * NOTE 1: This could be an expensive check if there are a lot of
- * entries in the ARP or Neighbor tables.
- *
- * NOTE 2: If we are actually harvesting IP addresses on incoming IP
- * packets, then this check should not be necessary; the MAC mapping
- * should already be in the ARP table in many cases (IPv4 only).
- *
- * NOTE 3: If CONFIG_NET_ARP_SEND then we can be assured that the IP
- * address mapping is already in the ARP table.
- *
- * Parameters:
- * conn - The TCP connection structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Running at the interrupt level
- *
- ****************************************************************************/
-
-#ifdef CONFIG_NET_ETHERNET
-static inline bool sendfile_addrcheck(FAR struct tcp_conn_s *conn)
-{
-#ifdef CONFIG_NET_IPv4
-#ifdef CONFIG_NET_IPv6
- if (conn->domain == PF_INET)
-#endif
- {
-#if !defined(CONFIG_NET_ARP_IPIN) && !defined(CONFIG_NET_ARP_SEND)
- return (arp_find(conn->u.ipv4.raddr) != NULL);
-#else
- return true;
-#endif
- }
-#endif /* CONFIG_NET_IPv4 */
-
-#ifdef CONFIG_NET_IPv6
-#ifdef CONFIG_NET_IPv4
- else
-#endif
- {
-#if !defined(CONFIG_NET_ICMPv6_NEIGHBOR)
- return (neighbor_findentry(conn->u.ipv6.raddr) != NULL);
-#else
- return true;
-#endif
- }
-#endif /* CONFIG_NET_IPv6 */
-}
-
-#else /* CONFIG_NET_ETHERNET */
-#sendfile_addrcheck(r) (true)
-#endif /* CONFIG_NET_ETHERNET */
-
-/****************************************************************************
- * Function: sendfile_interrupt
- *
- * Description:
- * This function is called from the interrupt level to perform the actual
- * send operation when polled by the lower, device interfacing layer.
- *
- * Parameters:
- * dev The structure of the network driver that caused the interrupt
- * conn The connection structure associated with the socket
- * flags Set of events describing why the callback was invoked
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Running at the interrupt level
- *
- ****************************************************************************/
-
-static uint16_t sendfile_interrupt(FAR struct net_driver_s *dev, FAR void *pvconn, FAR void *pvpriv, uint16_t flags)
-{
- FAR struct tcp_conn_s *conn = (FAR struct tcp_conn_s *)pvconn;
- FAR struct sendfile_s *pstate = (FAR struct sendfile_s *)pvpriv;
- int ret;
-
- nllvdbg("flags: %04x acked: %d sent: %d\n", flags, pstate->snd_acked, pstate->snd_sent);
-
- /* Check for a loss of connection */
-
- if ((flags & (TCP_CLOSE | TCP_ABORT | TCP_TIMEDOUT)) != 0) {
- /* Report not connected */
-
- nlldbg("Lost connection\n");
-
- net_lostconnection(pstate->snd_sock, flags);
- pstate->snd_sent = -ENOTCONN;
- goto end_wait;
- }
-
- /* We get here if (1) not all of the data has been ACKed, (2) we have been
- * asked to retransmit data, (3) the connection is still healthy, and (4)
- * the outgoing packet is available for our use. In this case, we are
- * now free to send more data to receiver -- UNLESS the buffer contains
- * unprocessing incoming data. In that event, we will have to wait for the
- * next polling cycle.
- */
-
- if ((flags & TCP_NEWDATA) == 0 && pstate->snd_sent < pstate->snd_flen) {
- /* Get the amount of data that we can send in the next packet */
-
- uint32_t sndlen = pstate->snd_flen - pstate->snd_sent;
-
- if (sndlen > tcp_mss(conn))
- sndlen = tcp_mss(conn);
-
- /* Check if we have "space" in the window */
-
- if ((pstate->snd_sent - pstate->snd_acked + sndlen) < conn->winsize) {
- uint32_t seqno;
-
- /* Then set-up to send that amount of data. (this won't actually
- * happen until the polling cycle completes).
- */
-
- ret = file_seek(pstate->snd_file, pstate->snd_foffset + pstate->snd_sent, SEEK_SET);
- if (ret < 0) {
- int errcode = errno;
- nlldbg("failed to lseek: %d\n", errcode);
- pstate->snd_sent = -errcode;
- goto end_wait;
- }
-
- ret = file_read(pstate->snd_file, dev->d_appdata, sndlen);
- if (ret < 0) {
- int errcode = errno;
- nlldbg("failed to read from input file: %d\n", errcode);
- pstate->snd_sent = -errcode;
- goto end_wait;
- }
-
- dev->d_sndlen = sndlen;
-
- /* Set the sequence number for this packet. NOTE: uIP updates
- * sndseq on recept of ACK *before* this function is called. In that
- * case sndseq will point to the next unacknowledge byte (which might
- * have already been sent). We will overwrite the value of sndseq
- * here before the packet is sent.
- */
-
- seqno = pstate->snd_sent + pstate->snd_isn;
- nllvdbg("SEND: sndseq %08x->%08x len: %d\n", conn->sndseq, seqno, ret);
-
- tcp_setsequence(conn->sndseq, seqno);
-
- /* Check if the destination IP address is in the ARP or Neighbor
- * table. If not, then the send won't actually make it out... it
- * will be replaced with an ARP request or Neighbor Solicitation.
- */
-
- if (pstate->snd_sent != 0 || sendfile_addrcheck(conn)) {
- /* Update the amount of data sent (but not necessarily ACKed) */
-
- pstate->snd_sent += sndlen;
- nllvdbg("pid: %d SEND: acked=%d sent=%d flen=%d\n", getpid(), pstate->snd_acked, pstate->snd_sent, pstate->snd_flen);
- }
- } else {
- nlldbg("Window full, wait for ack\n");
- goto wait;
- }
- }
-#ifdef CONFIG_NET_SOCKOPTS
- /* All data has been send and we are just waiting for ACK or re-transmit
- * indications to complete the send. Check for a timeout.
- */
-
- if (sendfile_timeout(pstate)) {
- /* Yes.. report the timeout */
-
- nlldbg("SEND timeout\n");
- pstate->snd_sent = -ETIMEDOUT;
- goto end_wait;
- }
-#endif /* CONFIG_NET_SOCKOPTS */
-
- if (pstate->snd_sent >= pstate->snd_flen && pstate->snd_acked < pstate->snd_flen) {
- /* All data has been sent, but there are outstanding ACK's */
-
- goto wait;
- }
-
-end_wait:
-
- /* Do not allow any further callbacks */
-
- pstate->snd_datacb->flags = 0;
- pstate->snd_datacb->priv = NULL;
- pstate->snd_datacb->event = NULL;
-
- /* Wake up the waiting thread */
-
- sem_post(&pstate->snd_sem);
-
-wait:
- return flags;
-}
-
-/****************************************************************************
- * Function: sendfile_txnotify
- *
- * Description:
- * Notify the appropriate device driver that we are have data ready to
- * be send (TCP)
- *
- * Parameters:
- * psock - Socket state structure
- * conn - The TCP connection structure
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
-
-static inline void sendfile_txnotify(FAR struct socket *psock, FAR struct tcp_conn_s *conn)
-{
-#ifdef CONFIG_NET_IPv4
-#ifdef CONFIG_NET_IPv6
- /* If both IPv4 and IPv6 support are enabled, then we will need to select
- * the device driver using the appropriate IP domain.
- */
-
- if (psock->s_domain == PF_INET)
-#endif
- {
- /* Notify the device driver that send data is available */
-
-#ifdef CONFIG_NETDEV_MULTINIC
- netdev_ipv4_txnotify(conn->u.ipv4.laddr, conn->u.ipv4.raddr);
-#else
- netdev_ipv4_txnotify(conn->u.ipv4.raddr);
-#endif
- }
-#endif /* CONFIG_NET_IPv4 */
-
-#ifdef CONFIG_NET_IPv6
-#ifdef CONFIG_NET_IPv4
- else /* if (psock->s_domain == PF_INET6) */
-#endif /* CONFIG_NET_IPv4 */
- {
- /* Notify the device driver that send data is available */
-
- DEBUGASSERT(psock->s_domain == PF_INET6);
-#ifdef CONFIG_NETDEV_MULTINIC
- netdev_ipv6_txnotify(conn->u.ipv6.laddr, conn->u.ipv6.raddr);
-#else
- netdev_ipv6_txnotify(conn->u.ipv6.raddr);
-#endif
- }
-#endif /* CONFIG_NET_IPv6 */
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Function: net_sendfile
- *
- * Description:
- * The send() call may be used only when the socket is in a connected state
- * (so that the intended recipient is known). The only difference between
- * send() and write() is the presence of flags. With zero flags parameter,
- * send() is equivalent to write(). Also, send(sockfd,buf,len,flags) is
- * equivalent to sendto(sockfd,buf,len,flags,NULL,0).
- *
- * Parameters:
- * psock An instance of the internal socket structure.
- * buf Data to send
- * len Length of data to send
- * flags Send flags
- *
- * Returned Value:
- * On success, returns the number of characters sent. On error,
- * -1 is returned, and errno is set appropriately:
- *
- * EAGAIN or EWOULDBLOCK
- * The socket is marked non-blocking and the requested operation
- * would block.
- * EBADF
- * An invalid descriptor was specified.
- * ECONNRESET
- * Connection reset by peer.
- * EDESTADDRREQ
- * The socket is not connection-mode, and no peer address is set.
- * EFAULT
- * An invalid user space address was specified for a parameter.
- * EINTR
- * A signal occurred before any data was transmitted.
- * EINVAL
- * Invalid argument passed.
- * EISCONN
- * The connection-mode socket was connected already but a recipient
- * was specified. (Now either this error is returned, or the recipient
- * specification is ignored.)
- * EMSGSIZE
- * The socket type requires that message be sent atomically, and the
- * size of the message to be sent made this impossible.
- * ENOBUFS
- * The output queue for a network interface was full. This generally
- * indicates that the interface has stopped sending, but may be
- * caused by transient congestion.
- * ENOMEM
- * No memory available.
- * ENOTCONN
- * The socket is not connected, and no target has been given.
- * ENOTSOCK
- * The argument s is not a socket.
- * EOPNOTSUPP
- * Some bit in the flags argument is inappropriate for the socket
- * type.
- * EPIPE
- * The local end has been shut down on a connection oriented socket.
- * In this case the process will also receive a SIGPIPE unless
- * MSG_NOSIGNAL is set.
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-ssize_t net_sendfile(int outfd, struct file *infile, off_t *offset, size_t count)
-{
- FAR struct socket *psock = sockfd_socket(outfd);
- FAR struct tcp_conn_s *conn;
- struct sendfile_s state;
- net_lock_t save;
- int err;
-
- /* Verify that the sockfd corresponds to valid, allocated socket */
-
- if (!psock || psock->s_crefs <= 0) {
- ndbg("ERROR: Invalid socket\n");
- err = EBADF;
- goto errout;
- }
-
- /* If this is an un-connected socket, then return ENOTCONN */
-
- if (psock->s_type != SOCK_STREAM || !_SS_ISCONNECTED(psock->s_flags)) {
- ndbg("ERROR: Not connected\n");
- err = ENOTCONN;
- goto errout;
- }
-
- /* Make sure that we have the IP address mapping */
-
- conn = (FAR struct tcp_conn_s *)psock->s_conn;
- DEBUGASSERT(conn);
-
-#if defined(CONFIG_NET_ARP_SEND) || defined(CONFIG_NET_ICMPv6_NEIGHBOR)
-#ifdef CONFIG_NET_ARP_SEND
-#ifdef CONFIG_NET_ICMPv6_NEIGHBOR
- if (psock->s_domain == PF_INET)
-#endif
- {
- /* Make sure that the IP address mapping is in the ARP table */
-
- ret = arp_send(conn->u.ipv4.raddr);
- }
-#endif /* CONFIG_NET_ARP_SEND */
-
-#ifdef CONFIG_NET_ICMPv6_NEIGHBOR
-#ifdef CONFIG_NET_ARP_SEND
- else
-#endif
- {
- /* Make sure that the IP address mapping is in the Neighbor Table */
-
- ret = icmpv6_neighbor(conn->u.ipv6.raddr);
- }
-#endif /* CONFIG_NET_ICMPv6_NEIGHBOR */
-
- /* Did we successfully get the address mapping? */
-
- if (ret < 0) {
- ndbg("ERROR: Not reachable\n");
- err = ENETUNREACH;
- goto errout;
- }
-#endif /* CONFIG_NET_ARP_SEND || CONFIG_NET_ICMPv6_NEIGHBOR */
-
- /* Set the socket state to sending */
-
- psock->s_flags = _SS_SETSTATE(psock->s_flags, _SF_SEND);
-
- /* Initialize the state structure. This is done with interrupts
- * disabled because we don't want anything to happen until we
- * are ready.
- */
-
- save = net_lock();
-
- memset(&state, 0, sizeof(struct sendfile_s));
- sem_init(&state.snd_sem, 0, 0); /* Doesn't really fail */
- state.snd_sock = psock; /* Socket descriptor to use */
- state.snd_foffset = offset ? *offset : 0; /* Input file offset */
- state.snd_flen = count; /* Number of bytes to send */
- state.snd_file = infile; /* File to read from */
-
- /* Allocate resources to receive a callback */
-
- state.snd_datacb = tcp_callback_alloc(conn);
-
- if (state.snd_datacb == NULL) {
- nlldbg("Failed to allocate data callback\n");
- err = ENOMEM;
- goto errout_locked;
- }
-
- state.snd_ackcb = tcp_callback_alloc(conn);
-
- if (state.snd_ackcb == NULL) {
- nlldbg("Failed to allocate ack callback\n");
- err = ENOMEM;
- goto errout_datacb;
- }
-
- /* Get the initial sequence number that will be used */
-
- state.snd_isn = tcp_getsequence(conn->sndseq);
-
- /* There is no outstanding, unacknowledged data after this
- * initial sequence number.
- */
-
- conn->unacked = 0;
-
-#ifdef CONFIG_NET_SOCKOPTS
- /* Set the initial time for calculating timeouts */
-
- state.snd_time = clock_systimer();
-#endif
-
- /* Set up the ACK callback in the connection */
-
- state.snd_ackcb->flags = (TCP_ACKDATA | TCP_REXMIT | TCP_CLOSE | TCP_ABORT | TCP_TIMEDOUT);
- state.snd_ackcb->priv = (void *)&state;
- state.snd_ackcb->event = ack_interrupt;
-
- /* Perform the TCP send operation */
-
- do {
- state.snd_datacb->flags = TCP_POLL;
- state.snd_datacb->priv = (void *)&state;
- state.snd_datacb->event = sendfile_interrupt;
-
- /* Notify the device driver of the availability of TX data */
-
- sendfile_txnotify(psock, conn);
- net_lockedwait(&state.snd_sem);
- } while (state.snd_sent >= 0 && state.snd_acked < state.snd_flen);
-
- /* Set the socket state to idle */
-
- psock->s_flags = _SS_SETSTATE(psock->s_flags, _SF_IDLE);
-
- tcp_callback_free(conn, state.snd_ackcb);
-
-errout_datacb:
- tcp_callback_free(conn, state.snd_datacb);
-
-errout_locked:
-
- sem_destroy(&state.snd_sem);
- net_unlock(save);
-
-errout:
-
- if (err) {
- set_errno(err);
- return ERROR;
- } else if (state.snd_sent < 0) {
- set_errno(-state.snd_sent);
- return ERROR;
- } else {
- return state.snd_sent;
- }
-}
-
-#endif /* CONFIG_NET && CONFIG_NET_TCP */
-
-#endif
projects / rtos / tinyara.git / commitdiff