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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-11-05 23:04:16 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-11-05 23:04:16 +0000 |
commit | 13a1d731ec51a27983bc9e6fcaa841607a090764 (patch) | |
tree | 93b32ce5f98ff118a21eb072cf111e164fd38686 /nuttx/net/uip/uip-poll.c | |
parent | 4cfb76d4d59acfdadc0f50527533b9c129edde41 (diff) | |
download | px4-nuttx-13a1d731ec51a27983bc9e6fcaa841607a090764.tar.gz px4-nuttx-13a1d731ec51a27983bc9e6fcaa841607a090764.tar.bz2 px4-nuttx-13a1d731ec51a27983bc9e6fcaa841607a090764.zip |
Basic TCP send functional
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@371 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/net/uip/uip-poll.c')
-rw-r--r-- | nuttx/net/uip/uip-poll.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/nuttx/net/uip/uip-poll.c b/nuttx/net/uip/uip-poll.c new file mode 100644 index 000000000..e6470dfe7 --- /dev/null +++ b/nuttx/net/uip/uip-poll.c @@ -0,0 +1,161 @@ +/**************************************************************************** + * net/uip/uip-poll.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * + * 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 <nuttx/config.h> +#ifdef CONFIG_NET + +#include <sys/types.h> +#include <debug.h> + +#include <net/uip/uipopt.h> +#include <net/uip/uip.h> +#include <net/uip/uip-arch.h> + +#include "uip-internal.h" + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: uip_udppoll() + * + * Description: + * Periodic processing for a UDP connection identified by its number. + * This function does the necessary periodic processing (timers, + * polling) for a uIP TCP conneciton, and should be called by the UIP + * device driver when the periodic uIP timer goes off. It should be + * called for every connection, regardless of whether they are open of + * closed. + * + * Assumptions: + * This function is called from the CAN device driver may be called from + * the timer interrupt/watchdog handle level. + * + ****************************************************************************/ + +static inline void uip_udppoll(struct uip_driver_s *dev, unsigned int conn) +{ +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Function: uip-poll + * + * Description: + * This function will traverse each active uIP connection structure and + * perform uip_interrupt with the specified event. After each polling each + * active uIP connection structure, this function will call the provided + * callback function if the poll resulted in new data to be send. The poll + * will continue until all connections have been polled or until the user- + * suplied function returns a non-zero value (which is would do only if + * it cannot accept further write data). + * + * This function should be called periodically with event == UIP_TIMER for + * periodic processing. This function may also be called with UIP_POLL to + * perform necessary periodic processing of TCP connections. + * + * When the callback function is called, there may be an outbound packet + * waiting for service in the uIP packet buffer, and if so the d_len field + * is set to a value larger than zero. The device driver should be called to + * send out the packet. + * + * Assumptions: + * This function is called from the CAN device driver and may be called from + * the timer interrupt/watchdog handle level. + * + ****************************************************************************/ + +int uip_poll(struct uip_driver_s *dev, uip_poll_callback_t callback, int event) +{ + struct uip_conn *conn; +#ifdef CONFIG_NET_UDP + struct uip_udp_conn *udp_conn; +#endif + irqstate_t flags; + + /* Interrupts must be disabled while traversing the active connection list */ + + flags = irqsave(); + + /* Traverse all of the active TCP connections and perform the poll action */ + + conn = NULL; + while ((conn = uip_nexttcpconn(uip_conn))) + { + uip_conn = conn; + uip_interrupt(dev, event); + if (callback(dev)) + { + irqrestore(flags); + return 1; + } + } + uip_conn = NULL; + +#ifdef CONFIG_NET_UDP + /* Traverse all of the allocated UDP connections and perform a poll action */ + + udp_conn = NULL; + while ((udp_conn = uip_nextudpconn(uip_udp_conn))) + { + uip_udp_conn = udp_conn; + uip_interrupt(dev, UIP_UDP_POLL); + if (callback(dev)) + { + irqrestore(flags); + return 1; + } + } + uip_udp_conn = NULL; +#endif /* CONFIG_NET_UDP */ + + irqrestore(flags); + return 0; +} + +#endif /* CONFIG_NET */ |