forked from nuttx/nuttx-update
Add IGMP send logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2785 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
7dceb00a39
commit
17db18e5f6
4 changed files with 171 additions and 8 deletions
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@ -81,8 +81,9 @@ endif
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# IGMP source files
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ifeq ($(CONFIG_NET_IGMP),y)
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UIP_CSRCS += uip_igmpinit.c uip_igmpgroup.c uip_igmpinput.c uip_igmpjoin.c \
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uip_igmpleave.c uip_igmpmsg.c uip_igmptimer.c uip_mcastmac.c
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UIP_CSRCS += uip_igmpgroup.c uip_igmpinit.c uip_igmpinput.c uip_igmpjoin.c \
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uip_igmpleave.c uip_igmpmsg.c uip_igmpsend.c uip_igmptimer.c \
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uip_mcastmac.c
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endif
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endif
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@ -58,8 +58,6 @@
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* Pre-processor Definitions
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****************************************************************************/
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#define IGMPBUF ((struct uip_igmphdr_s *)&dev->d_buf[UIP_LLH_LEN])
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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@ -92,7 +90,6 @@ static inline void uip_schedsend(FAR struct uip_driver_s *dev, FAR struct igmp_g
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nllvdbg("Send IGMPv2_MEMBERSHIP_REPORT\n");
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dest = &group->grpaddr;
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IGMP_STATINCR(uip_stat.igmp.report_sched);
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uiphdr_ipaddr_copy(IGMPBUF->grpaddr, &group->grpaddr);
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SET_LASTREPORT(group->flags); /* Remember we were the last to report */
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}
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else
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@ -101,12 +98,11 @@ static inline void uip_schedsend(FAR struct uip_driver_s *dev, FAR struct igmp_g
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DEBUGASSERT(group->msgid == IGMP_LEAVE_GROUP);
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dest = &g_allrouters;
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IGMP_STATINCR(uip_stat.igmp.leave_sched);
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uiphdr_ipaddr_copy(IGMPBUF->grpaddr, &group->grpaddr);
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}
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/* Send the message */
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uip_igmpsend(dev, dest);
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uip_igmpsend(dev, group, dest);
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/* Indicate that the message has been sent */
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164
net/uip/uip_igmpsend.c
Executable file
164
net/uip/uip_igmpsend.c
Executable file
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@ -0,0 +1,164 @@
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/****************************************************************************
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* net/uip/uip_igmpsend.c
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include <net/uip/uipopt.h>
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#include <net/uip/uip.h>
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#include <net/uip/uip-arch.h>
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#include <net/uip/uip-igmp.h>
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#include "uip_internal.h"
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#ifdef CONFIG_NET_IGMP
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define RASIZE (8)
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#define ROUTERALERT ((uint16_t*)&dev->d_buf[UIP_LLH_LEN])
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#define IGMPBUF ((struct uip_igmphdr_s *)&dev->d_buf[UIP_LLH_LEN + RASIZE])
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#define IGMPPAYLOAD (&dev->d_buf[UIP_LLH_LEN + RASIZE + UIP_IPH_LEN])
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static uint16_t uip_igmpchksum(FAR uint8_t *buffer, int buflen)
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{
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uint16_t sum = uip_chksum((FAR uint16_t*)buffer, buflen);
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return sum ? sum : 0xffff;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: uip_igmpsend
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*
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* Description:
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* Sends an IGMP IP packet on a network interface. This function constructs
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* the IP header and calculates the IP header checksum.
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*
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* Parameters:
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* dev - The device driver structure to use in the send operation.
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* group - Describes the multicast group member and identifies the message
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* to be sent.
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* destipaddr - The IP address of the recipient of the message
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*
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* Return:
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* None
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*
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* Assumptions:
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* Called from the interrupt level or with interrupts disabled.
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*
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****************************************************************************/
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void uip_igmpsend(FAR struct uip_driver_s *dev, FAR struct igmp_group_s *group,
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FAR uip_ipaddr_t *destipaddr)
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{
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/* The total length to send is the size of the IP and IGMP headers and 8
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* bytes for the ROUTER ALERT (and, eventually, the ethernet header)
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*/
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dev->d_len = UIP_IPIGMPH_LEN + RASIZE;
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/* The total size of the data is the size of the IGMP header */
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dev->d_sndlen = UIP_IGMPH_LEN;
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/* Add the router alert option */
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ROUTERALERT[0] = HTONS(0x9404);
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ROUTERALERT[1] = 0;
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/* Initialize the IPv4 header */
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IGMPBUF->vhl = 0x45;
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IGMPBUF->tos = 0;
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IGMPBUF->len[0] = (dev->d_len >> 8);
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IGMPBUF->len[1] = (dev->d_len & 0xff);
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++g_ipid;
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IGMPBUF->ipid[0] = g_ipid >> 8;
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IGMPBUF->ipid[1] = g_ipid & 0xff;
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IGMPBUF->ipoffset[0] = UIP_TCPFLAG_DONTFRAG >> 8;
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IGMPBUF->ipoffset[1] = UIP_TCPFLAG_DONTFRAG & 0xff;
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IGMPBUF->ttl = IGMP_TTL;
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IGMPBUF->proto = UIP_PROTO_IGMP;
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uiphdr_ipaddr_copy(IGMPBUF->srcipaddr, &dev->d_ipaddr);
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uiphdr_ipaddr_copy(IGMPBUF->destipaddr, destipaddr);
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/* Calculate IP checksum. */
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IGMPBUF->ipchksum = 0;
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IGMPBUF->ipchksum = ~uip_igmpchksum((FAR uint8_t *)ROUTERALERT, UIP_IPH_LEN + RASIZE);
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/* Set up the IGMP message */
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IGMPBUF->type = group->msgid;
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IGMPBUF->maxresp = 0;
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uiphdr_ipaddr_copy(IGMPBUF->grpaddr, &group->grpaddr);
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/* Calculate the IGMP checksum. */
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IGMPBUF->chksum = 0;
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IGMPBUF->chksum = ~uip_igmpchksum(IGMPPAYLOAD, UIP_IPIGMPH_LEN);
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IGMP_STATINCR(uip_stats.igmp.poll_send);
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IGMP_STATINCR(uip_stats.ip.sent);
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nllvdbg("Outgoing IGMP packet length: %d (%d)\n",
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dev->d_len, (IGMPBUF->len[0] << 8) | IGMPBUF->len[1]);
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}
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#endif /* CONFIG_NET_IGMP */
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@ -241,7 +241,9 @@ EXTERN void uip_igmppoll(FAR struct uip_driver_s *dev);
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/* Defined in up_igmpsend.c **************************************************/
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EXTERN void uip_igmpsend(FAR struct uip_driver_s *dev, uip_ipaddr_t *dest);
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EXTERN void uip_igmpsend(FAR struct uip_driver_s *dev,
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FAR struct igmp_group_s *group,
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FAR uip_ipaddr_t *dest);
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/* Defined in uip_igmptimer.c ************************************************/
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