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Add IGMP send logic 

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@2785 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2010-07-11 15:57:11 +00:00
parent 8e59c8fa45
commit 8dc4ac5afa
4 changed files with 171 additions and 8 deletions
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5
nuttx/net/uip/Make.defs
View File

@ -81,8 +81,9 @@ endif
# IGMP source files
ifeq ($(CONFIG_NET_IGMP),y)
UIP_CSRCS += uip_igmpinit.c uip_igmpgroup.c uip_igmpinput.c uip_igmpjoin.c \
uip_igmpleave.c uip_igmpmsg.c uip_igmptimer.c uip_mcastmac.c
UIP_CSRCS += uip_igmpgroup.c uip_igmpinit.c uip_igmpinput.c uip_igmpjoin.c \
uip_igmpleave.c uip_igmpmsg.c uip_igmpsend.c uip_igmptimer.c \
uip_mcastmac.c
endif
endif

6
nuttx/net/uip/uip_igmppoll.c
View File

@ -58,8 +58,6 @@
* Pre-processor Definitions
****************************************************************************/
#define IGMPBUF ((struct uip_igmphdr_s *)&dev->d_buf[UIP_LLH_LEN])
/****************************************************************************
* Private Functions
****************************************************************************/
@ -92,7 +90,6 @@ static inline void uip_schedsend(FAR struct uip_driver_s *dev, FAR struct igmp_g
nllvdbg("Send IGMPv2_MEMBERSHIP_REPORT\n");
dest = &group->grpaddr;
IGMP_STATINCR(uip_stat.igmp.report_sched);
uiphdr_ipaddr_copy(IGMPBUF->grpaddr, &group->grpaddr);
SET_LASTREPORT(group->flags); /* Remember we were the last to report */
}
else
@ -101,12 +98,11 @@ static inline void uip_schedsend(FAR struct uip_driver_s *dev, FAR struct igmp_g
DEBUGASSERT(group->msgid == IGMP_LEAVE_GROUP);
dest = &g_allrouters;
IGMP_STATINCR(uip_stat.igmp.leave_sched);
uiphdr_ipaddr_copy(IGMPBUF->grpaddr, &group->grpaddr);
}
/* Send the message */
uip_igmpsend(dev, dest);
uip_igmpsend(dev, group, dest);
/* Indicate that the message has been sent */

164
nuttx/net/uip/uip_igmpsend.c Executable file
View File

@ -0,0 +1,164 @@
/****************************************************************************
* net/uip/uip_igmpsend.c
*
* Copyright (C) 2010 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>
#include <debug.h>
#include <net/uip/uipopt.h>
#include <net/uip/uip.h>
#include <net/uip/uip-arch.h>
#include <net/uip/uip-igmp.h>
#include "uip_internal.h"
#ifdef CONFIG_NET_IGMP
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define RASIZE (8)
#define ROUTERALERT ((uint16_t*)&dev->d_buf[UIP_LLH_LEN])
#define IGMPBUF ((struct uip_igmphdr_s *)&dev->d_buf[UIP_LLH_LEN + RASIZE])
#define IGMPPAYLOAD (&dev->d_buf[UIP_LLH_LEN + RASIZE + UIP_IPH_LEN])
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
static uint16_t uip_igmpchksum(FAR uint8_t *buffer, int buflen)
{
uint16_t sum = uip_chksum((FAR uint16_t*)buffer, buflen);
return sum ? sum : 0xffff;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: uip_igmpsend
*
* Description:
* Sends an IGMP IP packet on a network interface. This function constructs
* the IP header and calculates the IP header checksum.
*
* Parameters:
* dev - The device driver structure to use in the send operation.
* group - Describes the multicast group member and identifies the message
* to be sent.
* destipaddr - The IP address of the recipient of the message
*
* Return:
* None
*
* Assumptions:
* Called from the interrupt level or with interrupts disabled.
*
****************************************************************************/
void uip_igmpsend(FAR struct uip_driver_s *dev, FAR struct igmp_group_s *group,
FAR uip_ipaddr_t *destipaddr)
{
/* The total length to send is the size of the IP and IGMP headers and 8
* bytes for the ROUTER ALERT (and, eventually, the ethernet header)
*/
dev->d_len = UIP_IPIGMPH_LEN + RASIZE;
/* The total size of the data is the size of the IGMP header */
dev->d_sndlen = UIP_IGMPH_LEN;
/* Add the router alert option */
ROUTERALERT[0] = HTONS(0x9404);
ROUTERALERT[1] = 0;
/* Initialize the IPv4 header */
IGMPBUF->vhl = 0x45;
IGMPBUF->tos = 0;
IGMPBUF->len[0] = (dev->d_len >> 8);
IGMPBUF->len[1] = (dev->d_len & 0xff);
++g_ipid;
IGMPBUF->ipid[0] = g_ipid >> 8;
IGMPBUF->ipid[1] = g_ipid & 0xff;
IGMPBUF->ipoffset[0] = UIP_TCPFLAG_DONTFRAG >> 8;
IGMPBUF->ipoffset[1] = UIP_TCPFLAG_DONTFRAG & 0xff;
IGMPBUF->ttl = IGMP_TTL;
IGMPBUF->proto = UIP_PROTO_IGMP;
uiphdr_ipaddr_copy(IGMPBUF->srcipaddr, &dev->d_ipaddr);
uiphdr_ipaddr_copy(IGMPBUF->destipaddr, destipaddr);
/* Calculate IP checksum. */
IGMPBUF->ipchksum = 0;
IGMPBUF->ipchksum = ~uip_igmpchksum((FAR uint8_t *)ROUTERALERT, UIP_IPH_LEN + RASIZE);
/* Set up the IGMP message */
IGMPBUF->type = group->msgid;
IGMPBUF->maxresp = 0;
uiphdr_ipaddr_copy(IGMPBUF->grpaddr, &group->grpaddr);
/* Calculate the IGMP checksum. */
IGMPBUF->chksum = 0;
IGMPBUF->chksum = ~uip_igmpchksum(IGMPPAYLOAD, UIP_IPIGMPH_LEN);
IGMP_STATINCR(uip_stats.igmp.poll_send);
IGMP_STATINCR(uip_stats.ip.sent);
nllvdbg("Outgoing IGMP packet length: %d (%d)\n",
dev->d_len, (IGMPBUF->len[0] << 8) | IGMPBUF->len[1]);
}
#endif /* CONFIG_NET_IGMP */

4
nuttx/net/uip/uip_internal.h
View File

@ -241,7 +241,9 @@ EXTERN void uip_igmppoll(FAR struct uip_driver_s *dev);
/* Defined in up_igmpsend.c **************************************************/
EXTERN void uip_igmpsend(FAR struct uip_driver_s *dev, uip_ipaddr_t *dest);
EXTERN void uip_igmpsend(FAR struct uip_driver_s *dev,
FAR struct igmp_group_s *group,
FAR uip_ipaddr_t *dest);
/* Defined in uip_igmptimer.c ************************************************/