diff options
Diffstat (limited to 'pfinet/linux-inet/dev_mcast.c')
| -rw-r--r-- | pfinet/linux-inet/dev_mcast.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/pfinet/linux-inet/dev_mcast.c b/pfinet/linux-inet/dev_mcast.c deleted file mode 100644 index cd5e356e..00000000 --- a/pfinet/linux-inet/dev_mcast.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Linux NET3: Multicast List maintenance. - * - * Authors: - * Tim Kordas <tjk@nostromo.eeap.cwru.edu> - * Richard Underwood <richard@wuzz.demon.co.uk> - * - * Stir fried together from the IP multicast and CAP patches above - * Alan Cox <Alan.Cox@linux.org> - * - * Fixes: - * Alan Cox : Update the device on a real delete - * rather than any time but... - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <asm/segment.h> -#include <asm/system.h> -#include <asm/bitops.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/socket.h> -#include <linux/sockios.h> -#include <linux/in.h> -#include <linux/errno.h> -#include <linux/interrupt.h> -#include <linux/if_ether.h> -#include <linux/inet.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include "ip.h" -#include "route.h" -#include <linux/skbuff.h> -#include "sock.h" -#include "arp.h" - - -/* - * Device multicast list maintenance. This knows about such little matters as promiscuous mode and - * converting from the list to the array the drivers use. At least until I fix the drivers up. - * - * This is used both by IP and by the user level maintenance functions. Unlike BSD we maintain a usage count - * on a given multicast address so that a casual user application can add/delete multicasts used by protocols - * without doing damage to the protocols when it deletes the entries. It also helps IP as it tracks overlapping - * maps. - */ - - -/* - * Update the multicast list into the physical NIC controller. - */ - -void dev_mc_upload(struct device *dev) -{ - struct dev_mc_list *dmi; - char *data, *tmp; - - /* Don't do anything till we up the interface - [dev_open will call this function so the list will - stay sane] */ - - if(!(dev->flags&IFF_UP)) - return; - - - /* Devices with no set multicast don't get set */ - if(dev->set_multicast_list==NULL) - return; - /* Promiscuous is promiscuous - so no filter needed */ - if(dev->flags&IFF_PROMISC) - { - dev->set_multicast_list(dev, -1, NULL); - return; - } - - if(dev->mc_count==0) - { - dev->set_multicast_list(dev,0,NULL); - return; - } - - data=kmalloc(dev->mc_count*dev->addr_len, GFP_KERNEL); - if(data==NULL) - { - printk("Unable to get memory to set multicast list on %s\n",dev->name); - return; - } - for(tmp = data, dmi=dev->mc_list;dmi!=NULL;dmi=dmi->next) - { - memcpy(tmp,dmi->dmi_addr, dmi->dmi_addrlen); - tmp+=dev->addr_len; - } - dev->set_multicast_list(dev,dev->mc_count,data); - kfree(data); -} - -/* - * Delete a device level multicast - */ - -void dev_mc_delete(struct device *dev, void *addr, int alen, int all) -{ - struct dev_mc_list **dmi; - for(dmi=&dev->mc_list;*dmi!=NULL;dmi=&(*dmi)->next) - { - if(memcmp((*dmi)->dmi_addr,addr,(*dmi)->dmi_addrlen)==0 && alen==(*dmi)->dmi_addrlen) - { - struct dev_mc_list *tmp= *dmi; - if(--(*dmi)->dmi_users && !all) - return; - *dmi=(*dmi)->next; - dev->mc_count--; - kfree_s(tmp,sizeof(*tmp)); - dev_mc_upload(dev); - return; - } - } -} - -/* - * Add a device level multicast - */ - -void dev_mc_add(struct device *dev, void *addr, int alen, int newonly) -{ - struct dev_mc_list *dmi; - for(dmi=dev->mc_list;dmi!=NULL;dmi=dmi->next) - { - if(memcmp(dmi->dmi_addr,addr,dmi->dmi_addrlen)==0 && dmi->dmi_addrlen==alen) - { - if(!newonly) - dmi->dmi_users++; - return; - } - } - dmi=(struct dev_mc_list *)kmalloc(sizeof(*dmi),GFP_KERNEL); - if(dmi==NULL) - return; /* GFP_KERNEL so can't happen anyway */ - memcpy(dmi->dmi_addr, addr, alen); - dmi->dmi_addrlen=alen; - dmi->next=dev->mc_list; - dmi->dmi_users=1; - dev->mc_list=dmi; - dev->mc_count++; - dev_mc_upload(dev); -} - -/* - * Discard multicast list when a device is downed - */ - -void dev_mc_discard(struct device *dev) -{ - while(dev->mc_list!=NULL) - { - struct dev_mc_list *tmp=dev->mc_list; - dev->mc_list=dev->mc_list->next; - kfree_s(tmp,sizeof(*tmp)); - } - dev->mc_count=0; -} - |