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net/ipv4/igmp.c
61.6 KB
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/* * Linux NET3: Internet Group Management Protocol [IGMP] * * This code implements the IGMP protocol as defined in RFC1112. There has * been a further revision of this protocol since which is now supported. * * If you have trouble with this module be careful what gcc you have used, * the older version didn't come out right using gcc 2.5.8, the newer one * seems to fall out with gcc 2.6.2. * * Version: $Id: igmp.c,v 1.47 2002/02/01 22:01:03 davem Exp $ * * Authors: * Alan Cox <Alan.Cox@linux.org> * * 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. * * Fixes: * * Alan Cox : Added lots of __inline__ to optimise * the memory usage of all the tiny little * functions. * Alan Cox : Dumped the header building experiment. * Alan Cox : Minor tweaks ready for multicast routing * and extended IGMP protocol. * Alan Cox : Removed a load of inline directives. Gcc 2.5.8 * writes utterly bogus code otherwise (sigh) * fixed IGMP loopback to behave in the manner * desired by mrouted, fixed the fact it has been * broken since 1.3.6 and cleaned up a few minor * points. * * Chih-Jen Chang : Tried to revise IGMP to Version 2 * Tsu-Sheng Tsao E-mail: chihjenc@scf.usc.edu and tsusheng@scf.usc.edu |
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* The enhancements are mainly based on Steve Deering's |
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* ipmulti-3.5 source code. * Chih-Jen Chang : Added the igmp_get_mrouter_info and * Tsu-Sheng Tsao igmp_set_mrouter_info to keep track of * the mrouted version on that device. * Chih-Jen Chang : Added the max_resp_time parameter to * Tsu-Sheng Tsao igmp_heard_query(). Using this parameter * to identify the multicast router version * and do what the IGMP version 2 specified. * Chih-Jen Chang : Added a timer to revert to IGMP V2 router * Tsu-Sheng Tsao if the specified time expired. * Alan Cox : Stop IGMP from 0.0.0.0 being accepted. * Alan Cox : Use GFP_ATOMIC in the right places. * Christian Daudt : igmp timer wasn't set for local group |
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* memberships but was being deleted, * which caused a "del_timer() called |
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* from %p with timer not initialized " * message (960131). |
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* Christian Daudt : removed del_timer from |
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* igmp_timer_expire function (960205). * Christian Daudt : igmp_heard_report now only calls * igmp_timer_expire if tm->running is * true (960216). * Malcolm Beattie : ttl comparison wrong in igmp_rcv made * igmp_heard_query never trigger. Expiry * miscalculation fixed in igmp_heard_query * and random() made to return unsigned to * prevent negative expiry times. * Alexey Kuznetsov: Wrong group leaving behaviour, backport * fix from pending 2.1.x patches. * Alan Cox: Forget to enable FDDI support earlier. * Alexey Kuznetsov: Fixed leaving groups on device down. * Alexey Kuznetsov: Accordance to igmp-v2-06 draft. * David L Stevens: IGMPv3 support, with help from * Vinay Kulkarni */ |
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#include <linux/module.h> #include <asm/uaccess.h> #include <asm/system.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/jiffies.h> #include <linux/string.h> #include <linux/socket.h> #include <linux/sockios.h> #include <linux/in.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/inetdevice.h> #include <linux/igmp.h> #include <linux/if_arp.h> #include <linux/rtnetlink.h> #include <linux/times.h> |
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#include <net/net_namespace.h> |
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#include <net/arp.h> |
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#include <net/ip.h> #include <net/protocol.h> #include <net/route.h> #include <net/sock.h> #include <net/checksum.h> #include <linux/netfilter_ipv4.h> #ifdef CONFIG_IP_MROUTE #include <linux/mroute.h> #endif #ifdef CONFIG_PROC_FS #include <linux/proc_fs.h> #include <linux/seq_file.h> #endif #define IP_MAX_MEMBERSHIPS 20 #define IP_MAX_MSF 10 #ifdef CONFIG_IP_MULTICAST /* Parameter names and values are taken from igmp-v2-06 draft */ #define IGMP_V1_Router_Present_Timeout (400*HZ) #define IGMP_V2_Router_Present_Timeout (400*HZ) #define IGMP_Unsolicited_Report_Interval (10*HZ) #define IGMP_Query_Response_Interval (10*HZ) #define IGMP_Unsolicited_Report_Count 2 #define IGMP_Initial_Report_Delay (1) /* IGMP_Initial_Report_Delay is not from IGMP specs! * IGMP specs require to report membership immediately after * joining a group, but we delay the first report by a * small interval. It seems more natural and still does not * contradict to specs provided this delay is small enough. */ |
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#define IGMP_V1_SEEN(in_dev) \ |
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(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 1 || \ |
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IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 1 || \ ((in_dev)->mr_v1_seen && \ time_before(jiffies, (in_dev)->mr_v1_seen))) #define IGMP_V2_SEEN(in_dev) \ |
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(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 2 || \ |
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IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 2 || \ ((in_dev)->mr_v2_seen && \ time_before(jiffies, (in_dev)->mr_v2_seen))) |
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static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im); |
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static void igmpv3_del_delrec(struct in_device *in_dev, __be32 multiaddr); |
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static void igmpv3_clear_delrec(struct in_device *in_dev); static int sf_setstate(struct ip_mc_list *pmc); static void sf_markstate(struct ip_mc_list *pmc); #endif static void ip_mc_clear_src(struct ip_mc_list *pmc); |
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static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode, int sfcount, __be32 *psfsrc, int delta); |
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static void ip_ma_put(struct ip_mc_list *im) { if (atomic_dec_and_test(&im->refcnt)) { in_dev_put(im->interface); kfree(im); } } #ifdef CONFIG_IP_MULTICAST /* * Timer management */ static __inline__ void igmp_stop_timer(struct ip_mc_list *im) { spin_lock_bh(&im->lock); if (del_timer(&im->timer)) atomic_dec(&im->refcnt); im->tm_running=0; im->reporter = 0; im->unsolicit_count = 0; spin_unlock_bh(&im->lock); } /* It must be called with locked im->lock */ static void igmp_start_timer(struct ip_mc_list *im, int max_delay) { int tv=net_random() % max_delay; im->tm_running=1; if (!mod_timer(&im->timer, jiffies+tv+2)) atomic_inc(&im->refcnt); } static void igmp_gq_start_timer(struct in_device *in_dev) { int tv = net_random() % in_dev->mr_maxdelay; in_dev->mr_gq_running = 1; if (!mod_timer(&in_dev->mr_gq_timer, jiffies+tv+2)) in_dev_hold(in_dev); } static void igmp_ifc_start_timer(struct in_device *in_dev, int delay) { int tv = net_random() % delay; if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2)) in_dev_hold(in_dev); } static void igmp_mod_timer(struct ip_mc_list *im, int max_delay) { spin_lock_bh(&im->lock); im->unsolicit_count = 0; if (del_timer(&im->timer)) { if ((long)(im->timer.expires-jiffies) < max_delay) { add_timer(&im->timer); im->tm_running=1; spin_unlock_bh(&im->lock); return; } atomic_dec(&im->refcnt); } igmp_start_timer(im, max_delay); spin_unlock_bh(&im->lock); } /* * Send an IGMP report. */ #define IGMP_SIZE (sizeof(struct igmphdr)+sizeof(struct iphdr)+4) static int is_in(struct ip_mc_list *pmc, struct ip_sf_list *psf, int type, int gdeleted, int sdeleted) { switch (type) { case IGMPV3_MODE_IS_INCLUDE: case IGMPV3_MODE_IS_EXCLUDE: if (gdeleted || sdeleted) return 0; |
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if (!(pmc->gsquery && !psf->sf_gsresp)) { if (pmc->sfmode == MCAST_INCLUDE) return 1; /* don't include if this source is excluded * in all filters */ if (psf->sf_count[MCAST_INCLUDE]) return type == IGMPV3_MODE_IS_INCLUDE; return pmc->sfcount[MCAST_EXCLUDE] == psf->sf_count[MCAST_EXCLUDE]; } return 0; |
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case IGMPV3_CHANGE_TO_INCLUDE: if (gdeleted || sdeleted) return 0; return psf->sf_count[MCAST_INCLUDE] != 0; case IGMPV3_CHANGE_TO_EXCLUDE: if (gdeleted || sdeleted) return 0; if (pmc->sfcount[MCAST_EXCLUDE] == 0 || psf->sf_count[MCAST_INCLUDE]) return 0; return pmc->sfcount[MCAST_EXCLUDE] == psf->sf_count[MCAST_EXCLUDE]; case IGMPV3_ALLOW_NEW_SOURCES: if (gdeleted || !psf->sf_crcount) return 0; return (pmc->sfmode == MCAST_INCLUDE) ^ sdeleted; case IGMPV3_BLOCK_OLD_SOURCES: if (pmc->sfmode == MCAST_INCLUDE) return gdeleted || (psf->sf_crcount && sdeleted); return psf->sf_crcount && !gdeleted && !sdeleted; } return 0; } static int igmp_scount(struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted) { struct ip_sf_list *psf; int scount = 0; for (psf=pmc->sources; psf; psf=psf->sf_next) { if (!is_in(pmc, psf, type, gdeleted, sdeleted)) continue; scount++; } return scount; } static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) { struct sk_buff *skb; struct rtable *rt; struct iphdr *pip; struct igmpv3_report *pig; |
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skb = alloc_skb(size + LL_ALLOCATED_SPACE(dev), GFP_ATOMIC); |
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if (skb == NULL) return NULL; { struct flowi fl = { .oif = dev->ifindex, .nl_u = { .ip4_u = { .daddr = IGMPV3_ALL_MCR } }, .proto = IPPROTO_IGMP }; |
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if (ip_route_output_key(&init_net, &rt, &fl)) { |
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kfree_skb(skb); return NULL; } } if (rt->rt_src == 0) { kfree_skb(skb); ip_rt_put(rt); return NULL; } skb->dst = &rt->u.dst; skb->dev = dev; skb_reserve(skb, LL_RESERVED_SPACE(dev)); |
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skb_reset_network_header(skb); |
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pip = ip_hdr(skb); |
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skb_put(skb, sizeof(struct iphdr) + 4); |
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pip->version = 4; pip->ihl = (sizeof(struct iphdr)+4)>>2; pip->tos = 0xc0; pip->frag_off = htons(IP_DF); pip->ttl = 1; pip->daddr = rt->rt_dst; pip->saddr = rt->rt_src; pip->protocol = IPPROTO_IGMP; pip->tot_len = 0; /* filled in later */ ip_select_ident(pip, &rt->u.dst, NULL); ((u8*)&pip[1])[0] = IPOPT_RA; ((u8*)&pip[1])[1] = 4; ((u8*)&pip[1])[2] = 0; ((u8*)&pip[1])[3] = 0; |
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skb->transport_header = skb->network_header + sizeof(struct iphdr) + 4; |
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skb_put(skb, sizeof(*pig)); |
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pig = igmpv3_report_hdr(skb); |
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pig->type = IGMPV3_HOST_MEMBERSHIP_REPORT; pig->resv1 = 0; pig->csum = 0; pig->resv2 = 0; pig->ngrec = 0; return skb; } static int igmpv3_sendpack(struct sk_buff *skb) { |
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struct igmphdr *pig = igmp_hdr(skb); |
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const int igmplen = skb->tail - skb->transport_header; |
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pig->csum = ip_compute_csum(igmp_hdr(skb), igmplen); |
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return ip_local_out(skb); |
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} static int grec_size(struct ip_mc_list *pmc, int type, int gdel, int sdel) { return sizeof(struct igmpv3_grec) + 4*igmp_scount(pmc,type,gdel,sdel); } static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc, int type, struct igmpv3_grec **ppgr) { struct net_device *dev = pmc->interface->dev; struct igmpv3_report *pih; struct igmpv3_grec *pgr; if (!skb) skb = igmpv3_newpack(dev, dev->mtu); if (!skb) return NULL; pgr = (struct igmpv3_grec *)skb_put(skb, sizeof(struct igmpv3_grec)); pgr->grec_type = type; pgr->grec_auxwords = 0; pgr->grec_nsrcs = 0; pgr->grec_mca = pmc->multiaddr; |
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pih = igmpv3_report_hdr(skb); |
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pih->ngrec = htons(ntohs(pih->ngrec)+1); *ppgr = pgr; return skb; } #define AVAILABLE(skb) ((skb) ? ((skb)->dev ? (skb)->dev->mtu - (skb)->len : \ skb_tailroom(skb)) : 0) static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted) { struct net_device *dev = pmc->interface->dev; struct igmpv3_report *pih; struct igmpv3_grec *pgr = NULL; struct ip_sf_list *psf, *psf_next, *psf_prev, **psf_list; |
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int scount, stotal, first, isquery, truncate; |
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if (pmc->multiaddr == IGMP_ALL_HOSTS) return skb; isquery = type == IGMPV3_MODE_IS_INCLUDE || type == IGMPV3_MODE_IS_EXCLUDE; truncate = type == IGMPV3_MODE_IS_EXCLUDE || type == IGMPV3_CHANGE_TO_EXCLUDE; |
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stotal = scount = 0; |
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psf_list = sdeleted ? &pmc->tomb : &pmc->sources; |
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if (!*psf_list) goto empty_source; |
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pih = skb ? igmpv3_report_hdr(skb) : NULL; |
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/* EX and TO_EX get a fresh packet, if needed */ if (truncate) { if (pih && pih->ngrec && AVAILABLE(skb) < grec_size(pmc, type, gdeleted, sdeleted)) { if (skb) igmpv3_sendpack(skb); skb = igmpv3_newpack(dev, dev->mtu); } } first = 1; |
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psf_prev = NULL; for (psf=*psf_list; psf; psf=psf_next) { |
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__be32 *psrc; |
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psf_next = psf->sf_next; if (!is_in(pmc, psf, type, gdeleted, sdeleted)) { psf_prev = psf; continue; } /* clear marks on query responses */ if (isquery) psf->sf_gsresp = 0; |
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if (AVAILABLE(skb) < sizeof(__be32) + |
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first*sizeof(struct igmpv3_grec)) { if (truncate && !first) break; /* truncate these */ if (pgr) pgr->grec_nsrcs = htons(scount); if (skb) igmpv3_sendpack(skb); skb = igmpv3_newpack(dev, dev->mtu); first = 1; scount = 0; } if (first) { skb = add_grhead(skb, pmc, type, &pgr); first = 0; } |
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if (!skb) return NULL; |
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psrc = (__be32 *)skb_put(skb, sizeof(__be32)); |
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*psrc = psf->sf_inaddr; |
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scount++; stotal++; |
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if ((type == IGMPV3_ALLOW_NEW_SOURCES || type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) { psf->sf_crcount--; if ((sdeleted || gdeleted) && psf->sf_crcount == 0) { if (psf_prev) psf_prev->sf_next = psf->sf_next; else *psf_list = psf->sf_next; kfree(psf); continue; } } psf_prev = psf; } |
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empty_source: if (!stotal) { if (type == IGMPV3_ALLOW_NEW_SOURCES || type == IGMPV3_BLOCK_OLD_SOURCES) return skb; if (pmc->crcount || isquery) { /* make sure we have room for group header */ if (skb && AVAILABLE(skb)<sizeof(struct igmpv3_grec)) { igmpv3_sendpack(skb); skb = NULL; /* add_grhead will get a new one */ } skb = add_grhead(skb, pmc, type, &pgr); } } |
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if (pgr) pgr->grec_nsrcs = htons(scount); if (isquery) pmc->gsquery = 0; /* clear query state on report */ return skb; } static int igmpv3_send_report(struct in_device *in_dev, struct ip_mc_list *pmc) { struct sk_buff *skb = NULL; int type; if (!pmc) { read_lock(&in_dev->mc_list_lock); for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) { if (pmc->multiaddr == IGMP_ALL_HOSTS) continue; spin_lock_bh(&pmc->lock); if (pmc->sfcount[MCAST_EXCLUDE]) type = IGMPV3_MODE_IS_EXCLUDE; else type = IGMPV3_MODE_IS_INCLUDE; skb = add_grec(skb, pmc, type, 0, 0); spin_unlock_bh(&pmc->lock); } read_unlock(&in_dev->mc_list_lock); } else { spin_lock_bh(&pmc->lock); if (pmc->sfcount[MCAST_EXCLUDE]) type = IGMPV3_MODE_IS_EXCLUDE; else type = IGMPV3_MODE_IS_INCLUDE; skb = add_grec(skb, pmc, type, 0, 0); spin_unlock_bh(&pmc->lock); } if (!skb) return 0; return igmpv3_sendpack(skb); } /* * remove zero-count source records from a source filter list */ static void igmpv3_clear_zeros(struct ip_sf_list **ppsf) { struct ip_sf_list *psf_prev, *psf_next, *psf; psf_prev = NULL; for (psf=*ppsf; psf; psf = psf_next) { psf_next = psf->sf_next; if (psf->sf_crcount == 0) { if (psf_prev) psf_prev->sf_next = psf->sf_next; else *ppsf = psf->sf_next; kfree(psf); } else psf_prev = psf; } } static void igmpv3_send_cr(struct in_device *in_dev) { struct ip_mc_list *pmc, *pmc_prev, *pmc_next; struct sk_buff *skb = NULL; int type, dtype; read_lock(&in_dev->mc_list_lock); spin_lock_bh(&in_dev->mc_tomb_lock); /* deleted MCA's */ pmc_prev = NULL; for (pmc=in_dev->mc_tomb; pmc; pmc=pmc_next) { pmc_next = pmc->next; if (pmc->sfmode == MCAST_INCLUDE) { type = IGMPV3_BLOCK_OLD_SOURCES; dtype = IGMPV3_BLOCK_OLD_SOURCES; skb = add_grec(skb, pmc, type, 1, 0); skb = add_grec(skb, pmc, dtype, 1, 1); } if (pmc->crcount) { |
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if (pmc->sfmode == MCAST_EXCLUDE) { type = IGMPV3_CHANGE_TO_INCLUDE; skb = add_grec(skb, pmc, type, 1, 0); } |
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pmc->crcount--; |
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if (pmc->crcount == 0) { igmpv3_clear_zeros(&pmc->tomb); igmpv3_clear_zeros(&pmc->sources); } } if (pmc->crcount == 0 && !pmc->tomb && !pmc->sources) { if (pmc_prev) pmc_prev->next = pmc_next; else in_dev->mc_tomb = pmc_next; in_dev_put(pmc->interface); kfree(pmc); } else pmc_prev = pmc; } spin_unlock_bh(&in_dev->mc_tomb_lock); /* change recs */ for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) { spin_lock_bh(&pmc->lock); if (pmc->sfcount[MCAST_EXCLUDE]) { type = IGMPV3_BLOCK_OLD_SOURCES; dtype = IGMPV3_ALLOW_NEW_SOURCES; } else { type = IGMPV3_ALLOW_NEW_SOURCES; dtype = IGMPV3_BLOCK_OLD_SOURCES; } skb = add_grec(skb, pmc, type, 0, 0); skb = add_grec(skb, pmc, dtype, 0, 1); /* deleted sources */ /* filter mode changes */ if (pmc->crcount) { |
1da177e4c Linux-2.6.12-rc2 |
601 602 603 604 605 |
if (pmc->sfmode == MCAST_EXCLUDE) type = IGMPV3_CHANGE_TO_EXCLUDE; else type = IGMPV3_CHANGE_TO_INCLUDE; skb = add_grec(skb, pmc, type, 0, 0); |
ad12583f4 [IPV4]: Fix multi... |
606 |
pmc->crcount--; |
1da177e4c Linux-2.6.12-rc2 |
607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 |
} spin_unlock_bh(&pmc->lock); } read_unlock(&in_dev->mc_list_lock); if (!skb) return; (void) igmpv3_sendpack(skb); } static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, int type) { struct sk_buff *skb; struct iphdr *iph; struct igmphdr *ih; struct rtable *rt; struct net_device *dev = in_dev->dev; |
63007727e [IPV4]: trivial i... |
625 626 |
__be32 group = pmc ? pmc->multiaddr : 0; __be32 dst; |
1da177e4c Linux-2.6.12-rc2 |
627 628 629 630 631 632 633 634 635 636 637 638 |
if (type == IGMPV3_HOST_MEMBERSHIP_REPORT) return igmpv3_send_report(in_dev, pmc); else if (type == IGMP_HOST_LEAVE_MESSAGE) dst = IGMP_ALL_ROUTER; else dst = group; { struct flowi fl = { .oif = dev->ifindex, .nl_u = { .ip4_u = { .daddr = dst } }, .proto = IPPROTO_IGMP }; |
f206351a5 [NETNS]: Add name... |
639 |
if (ip_route_output_key(&init_net, &rt, &fl)) |
1da177e4c Linux-2.6.12-rc2 |
640 641 642 643 644 645 |
return -1; } if (rt->rt_src == 0) { ip_rt_put(rt); return -1; } |
f5184d267 net: Allow netdev... |
646 |
skb=alloc_skb(IGMP_SIZE+LL_ALLOCATED_SPACE(dev), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
647 648 649 650 651 652 653 654 |
if (skb == NULL) { ip_rt_put(rt); return -1; } skb->dst = &rt->u.dst; skb_reserve(skb, LL_RESERVED_SPACE(dev)); |
7e28ecc28 [SK_BUFF]: Use sk... |
655 |
skb_reset_network_header(skb); |
eddc9ec53 [SK_BUFF]: Introd... |
656 |
iph = ip_hdr(skb); |
7e28ecc28 [SK_BUFF]: Use sk... |
657 |
skb_put(skb, sizeof(struct iphdr) + 4); |
1da177e4c Linux-2.6.12-rc2 |
658 659 660 661 662 663 664 665 666 |
iph->version = 4; iph->ihl = (sizeof(struct iphdr)+4)>>2; iph->tos = 0xc0; iph->frag_off = htons(IP_DF); iph->ttl = 1; iph->daddr = dst; iph->saddr = rt->rt_src; iph->protocol = IPPROTO_IGMP; |
1da177e4c Linux-2.6.12-rc2 |
667 668 669 670 671 |
ip_select_ident(iph, &rt->u.dst, NULL); ((u8*)&iph[1])[0] = IPOPT_RA; ((u8*)&iph[1])[1] = 4; ((u8*)&iph[1])[2] = 0; ((u8*)&iph[1])[3] = 0; |
1da177e4c Linux-2.6.12-rc2 |
672 673 674 675 676 677 678 |
ih = (struct igmphdr *)skb_put(skb, sizeof(struct igmphdr)); ih->type=type; ih->code=0; ih->csum=0; ih->group=group; ih->csum=ip_compute_csum((void *)ih, sizeof(struct igmphdr)); |
c439cb2e4 [IPV4]: Add ip_lo... |
679 |
return ip_local_out(skb); |
1da177e4c Linux-2.6.12-rc2 |
680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 |
} static void igmp_gq_timer_expire(unsigned long data) { struct in_device *in_dev = (struct in_device *)data; in_dev->mr_gq_running = 0; igmpv3_send_report(in_dev, NULL); __in_dev_put(in_dev); } static void igmp_ifc_timer_expire(unsigned long data) { struct in_device *in_dev = (struct in_device *)data; igmpv3_send_cr(in_dev); if (in_dev->mr_ifc_count) { in_dev->mr_ifc_count--; igmp_ifc_start_timer(in_dev, IGMP_Unsolicited_Report_Interval); } __in_dev_put(in_dev); } static void igmp_ifc_event(struct in_device *in_dev) { if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) return; |
e905a9eda [NET] IPV4: Fix w... |
707 |
in_dev->mr_ifc_count = in_dev->mr_qrv ? in_dev->mr_qrv : |
1da177e4c Linux-2.6.12-rc2 |
708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 |
IGMP_Unsolicited_Report_Count; igmp_ifc_start_timer(in_dev, 1); } static void igmp_timer_expire(unsigned long data) { struct ip_mc_list *im=(struct ip_mc_list *)data; struct in_device *in_dev = im->interface; spin_lock(&im->lock); im->tm_running=0; if (im->unsolicit_count) { im->unsolicit_count--; igmp_start_timer(im, IGMP_Unsolicited_Report_Interval); } im->reporter = 1; spin_unlock(&im->lock); if (IGMP_V1_SEEN(in_dev)) igmp_send_report(in_dev, im, IGMP_HOST_MEMBERSHIP_REPORT); else if (IGMP_V2_SEEN(in_dev)) igmp_send_report(in_dev, im, IGMPV2_HOST_MEMBERSHIP_REPORT); else igmp_send_report(in_dev, im, IGMPV3_HOST_MEMBERSHIP_REPORT); ip_ma_put(im); } |
ad12583f4 [IPV4]: Fix multi... |
737 |
/* mark EXCLUDE-mode sources */ |
ea4d9e722 [IPV4]: struct ip... |
738 |
static int igmp_xmarksources(struct ip_mc_list *pmc, int nsrcs, __be32 *srcs) |
1da177e4c Linux-2.6.12-rc2 |
739 740 741 742 743 744 745 746 |
{ struct ip_sf_list *psf; int i, scount; scount = 0; for (psf=pmc->sources; psf; psf=psf->sf_next) { if (scount == nsrcs) break; |
ad12583f4 [IPV4]: Fix multi... |
747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 |
for (i=0; i<nsrcs; i++) { /* skip inactive filters */ if (pmc->sfcount[MCAST_INCLUDE] || pmc->sfcount[MCAST_EXCLUDE] != psf->sf_count[MCAST_EXCLUDE]) continue; if (srcs[i] == psf->sf_inaddr) { scount++; break; } } } pmc->gsquery = 0; if (scount == nsrcs) /* all sources excluded */ return 0; return 1; } |
ea4d9e722 [IPV4]: struct ip... |
764 |
static int igmp_marksources(struct ip_mc_list *pmc, int nsrcs, __be32 *srcs) |
ad12583f4 [IPV4]: Fix multi... |
765 766 767 768 769 770 771 772 773 774 775 776 |
{ struct ip_sf_list *psf; int i, scount; if (pmc->sfmode == MCAST_EXCLUDE) return igmp_xmarksources(pmc, nsrcs, srcs); /* mark INCLUDE-mode sources */ scount = 0; for (psf=pmc->sources; psf; psf=psf->sf_next) { if (scount == nsrcs) break; |
1da177e4c Linux-2.6.12-rc2 |
777 778 779 780 781 782 783 |
for (i=0; i<nsrcs; i++) if (srcs[i] == psf->sf_inaddr) { psf->sf_gsresp = 1; scount++; break; } } |
ad12583f4 [IPV4]: Fix multi... |
784 785 786 787 788 789 |
if (!scount) { pmc->gsquery = 0; return 0; } pmc->gsquery = 1; return 1; |
1da177e4c Linux-2.6.12-rc2 |
790 |
} |
63007727e [IPV4]: trivial i... |
791 |
static void igmp_heard_report(struct in_device *in_dev, __be32 group) |
1da177e4c Linux-2.6.12-rc2 |
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 |
{ struct ip_mc_list *im; /* Timers are only set for non-local groups */ if (group == IGMP_ALL_HOSTS) return; read_lock(&in_dev->mc_list_lock); for (im=in_dev->mc_list; im!=NULL; im=im->next) { if (im->multiaddr == group) { igmp_stop_timer(im); break; } } read_unlock(&in_dev->mc_list_lock); } static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, int len) { |
d9edf9e2b [SK_BUFF]: Introd... |
813 814 |
struct igmphdr *ih = igmp_hdr(skb); struct igmpv3_query *ih3 = igmpv3_query_hdr(skb); |
1da177e4c Linux-2.6.12-rc2 |
815 |
struct ip_mc_list *im; |
63007727e [IPV4]: trivial i... |
816 |
__be32 group = ih->group; |
1da177e4c Linux-2.6.12-rc2 |
817 818 819 820 821 822 823 |
int max_delay; int mark = 0; if (len == 8) { if (ih->code == 0) { /* Alas, old v1 router presents here. */ |
e905a9eda [NET] IPV4: Fix w... |
824 |
|
1da177e4c Linux-2.6.12-rc2 |
825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 |
max_delay = IGMP_Query_Response_Interval; in_dev->mr_v1_seen = jiffies + IGMP_V1_Router_Present_Timeout; group = 0; } else { /* v2 router present */ max_delay = ih->code*(HZ/IGMP_TIMER_SCALE); in_dev->mr_v2_seen = jiffies + IGMP_V2_Router_Present_Timeout; } /* cancel the interface change timer */ in_dev->mr_ifc_count = 0; if (del_timer(&in_dev->mr_ifc_timer)) __in_dev_put(in_dev); /* clear deleted report items */ igmpv3_clear_delrec(in_dev); } else if (len < 12) { return; /* ignore bogus packet; freed by caller */ } else { /* v3 */ if (!pskb_may_pull(skb, sizeof(struct igmpv3_query))) return; |
e905a9eda [NET] IPV4: Fix w... |
846 |
|
d9edf9e2b [SK_BUFF]: Introd... |
847 |
ih3 = igmpv3_query_hdr(skb); |
1da177e4c Linux-2.6.12-rc2 |
848 |
if (ih3->nsrcs) { |
e905a9eda [NET] IPV4: Fix w... |
849 |
if (!pskb_may_pull(skb, sizeof(struct igmpv3_query) |
63007727e [IPV4]: trivial i... |
850 |
+ ntohs(ih3->nsrcs)*sizeof(__be32))) |
1da177e4c Linux-2.6.12-rc2 |
851 |
return; |
d9edf9e2b [SK_BUFF]: Introd... |
852 |
ih3 = igmpv3_query_hdr(skb); |
1da177e4c Linux-2.6.12-rc2 |
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 |
} max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE); if (!max_delay) max_delay = 1; /* can't mod w/ 0 */ in_dev->mr_maxdelay = max_delay; if (ih3->qrv) in_dev->mr_qrv = ih3->qrv; if (!group) { /* general query */ if (ih3->nsrcs) return; /* no sources allowed */ igmp_gq_start_timer(in_dev); return; } /* mark sources to include, if group & source-specific */ mark = ih3->nsrcs != 0; } /* * - Start the timers in all of our membership records * that the query applies to for the interface on * which the query arrived excl. those that belong * to a "local" group (224.0.0.X) * - For timers already running check if they need to * be reset. * - Use the igmp->igmp_code field as the maximum * delay possible */ read_lock(&in_dev->mc_list_lock); for (im=in_dev->mc_list; im!=NULL; im=im->next) { |
ad12583f4 [IPV4]: Fix multi... |
883 |
int changed; |
1da177e4c Linux-2.6.12-rc2 |
884 885 886 887 888 889 890 891 892 |
if (group && group != im->multiaddr) continue; if (im->multiaddr == IGMP_ALL_HOSTS) continue; spin_lock_bh(&im->lock); if (im->tm_running) im->gsquery = im->gsquery && mark; else im->gsquery = mark; |
ad12583f4 [IPV4]: Fix multi... |
893 |
changed = !im->gsquery || |
e905a9eda [NET] IPV4: Fix w... |
894 |
igmp_marksources(im, ntohs(ih3->nsrcs), ih3->srcs); |
1da177e4c Linux-2.6.12-rc2 |
895 |
spin_unlock_bh(&im->lock); |
ad12583f4 [IPV4]: Fix multi... |
896 897 |
if (changed) igmp_mod_timer(im, max_delay); |
1da177e4c Linux-2.6.12-rc2 |
898 899 900 901 902 903 904 905 906 907 |
} read_unlock(&in_dev->mc_list_lock); } int igmp_rcv(struct sk_buff *skb) { /* This basically follows the spec line by line -- see RFC1112 */ struct igmphdr *ih; struct in_device *in_dev = in_dev_get(skb->dev); int len = skb->len; |
cd557bc1c [IGMP]: Optimize ... |
908 909 |
if (in_dev == NULL) goto drop; |
1da177e4c Linux-2.6.12-rc2 |
910 |
|
fb286bb29 [NET]: Detect har... |
911 |
if (!pskb_may_pull(skb, sizeof(struct igmphdr))) |
cd557bc1c [IGMP]: Optimize ... |
912 |
goto drop_ref; |
fb286bb29 [NET]: Detect har... |
913 914 |
switch (skb->ip_summed) { |
84fa7933a [NET]: Replace CH... |
915 |
case CHECKSUM_COMPLETE: |
d3bc23e7e [NET]: Annotate c... |
916 |
if (!csum_fold(skb->csum)) |
fb286bb29 [NET]: Detect har... |
917 918 919 920 921 |
break; /* fall through */ case CHECKSUM_NONE: skb->csum = 0; if (__skb_checksum_complete(skb)) |
cd557bc1c [IGMP]: Optimize ... |
922 |
goto drop_ref; |
1da177e4c Linux-2.6.12-rc2 |
923 |
} |
d9edf9e2b [SK_BUFF]: Introd... |
924 |
ih = igmp_hdr(skb); |
1da177e4c Linux-2.6.12-rc2 |
925 926 927 928 929 930 931 932 |
switch (ih->type) { case IGMP_HOST_MEMBERSHIP_QUERY: igmp_heard_query(in_dev, skb, len); break; case IGMP_HOST_MEMBERSHIP_REPORT: case IGMPV2_HOST_MEMBERSHIP_REPORT: case IGMPV3_HOST_MEMBERSHIP_REPORT: /* Is it our report looped back? */ |
ee6b96730 [IPV4]: Add 'rtab... |
933 |
if (skb->rtable->fl.iif == 0) |
1da177e4c Linux-2.6.12-rc2 |
934 |
break; |
24c692750 [IGMP]: workaroun... |
935 936 937 938 |
/* don't rely on MC router hearing unicast reports */ if (skb->pkt_type == PACKET_MULTICAST || skb->pkt_type == PACKET_BROADCAST) igmp_heard_report(in_dev, ih->group); |
1da177e4c Linux-2.6.12-rc2 |
939 940 941 942 943 944 945 946 947 948 949 950 951 |
break; case IGMP_PIM: #ifdef CONFIG_IP_PIMSM_V1 in_dev_put(in_dev); return pim_rcv_v1(skb); #endif case IGMP_DVMRP: case IGMP_TRACE: case IGMP_HOST_LEAVE_MESSAGE: case IGMP_MTRACE: case IGMP_MTRACE_RESP: break; default: |
dd1c1853e Fix ipv4/igmp.c c... |
952 |
break; |
1da177e4c Linux-2.6.12-rc2 |
953 |
} |
fb286bb29 [NET]: Detect har... |
954 |
|
cd557bc1c [IGMP]: Optimize ... |
955 |
drop_ref: |
1da177e4c Linux-2.6.12-rc2 |
956 |
in_dev_put(in_dev); |
cd557bc1c [IGMP]: Optimize ... |
957 |
drop: |
1da177e4c Linux-2.6.12-rc2 |
958 959 960 961 962 963 964 965 966 967 |
kfree_skb(skb); return 0; } #endif /* * Add a filter to a device */ |
63007727e [IPV4]: trivial i... |
968 |
static void ip_mc_filter_add(struct in_device *in_dev, __be32 addr) |
1da177e4c Linux-2.6.12-rc2 |
969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 |
{ char buf[MAX_ADDR_LEN]; struct net_device *dev = in_dev->dev; /* Checking for IFF_MULTICAST here is WRONG-WRONG-WRONG. We will get multicast token leakage, when IFF_MULTICAST is changed. This check should be done in dev->set_multicast_list routine. Something sort of: if (dev->mc_list && dev->flags&IFF_MULTICAST) { do it; } --ANK */ if (arp_mc_map(addr, buf, dev, 0) == 0) dev_mc_add(dev,buf,dev->addr_len,0); } /* * Remove a filter from a device */ |
63007727e [IPV4]: trivial i... |
987 |
static void ip_mc_filter_del(struct in_device *in_dev, __be32 addr) |
1da177e4c Linux-2.6.12-rc2 |
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 |
{ char buf[MAX_ADDR_LEN]; struct net_device *dev = in_dev->dev; if (arp_mc_map(addr, buf, dev, 0) == 0) dev_mc_delete(dev,buf,dev->addr_len,0); } #ifdef CONFIG_IP_MULTICAST /* * deleted ip_mc_list manipulation */ static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im) { struct ip_mc_list *pmc; /* this is an "ip_mc_list" for convenience; only the fields below * are actually used. In particular, the refcnt and users are not * used for management of the delete list. Using the same structure * for deleted items allows change reports to use common code with * non-deleted or query-response MCA's. */ |
0da974f4f [NET]: Conversion... |
1010 |
pmc = kzalloc(sizeof(*pmc), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
1011 1012 |
if (!pmc) return; |
1da177e4c Linux-2.6.12-rc2 |
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 |
spin_lock_bh(&im->lock); pmc->interface = im->interface; in_dev_hold(in_dev); pmc->multiaddr = im->multiaddr; pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; pmc->sfmode = im->sfmode; if (pmc->sfmode == MCAST_INCLUDE) { struct ip_sf_list *psf; pmc->tomb = im->tomb; pmc->sources = im->sources; im->tomb = im->sources = NULL; for (psf=pmc->sources; psf; psf=psf->sf_next) psf->sf_crcount = pmc->crcount; } spin_unlock_bh(&im->lock); spin_lock_bh(&in_dev->mc_tomb_lock); pmc->next = in_dev->mc_tomb; in_dev->mc_tomb = pmc; spin_unlock_bh(&in_dev->mc_tomb_lock); } |
63007727e [IPV4]: trivial i... |
1036 |
static void igmpv3_del_delrec(struct in_device *in_dev, __be32 multiaddr) |
1da177e4c Linux-2.6.12-rc2 |
1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 |
{ struct ip_mc_list *pmc, *pmc_prev; struct ip_sf_list *psf, *psf_next; spin_lock_bh(&in_dev->mc_tomb_lock); pmc_prev = NULL; for (pmc=in_dev->mc_tomb; pmc; pmc=pmc->next) { if (pmc->multiaddr == multiaddr) break; pmc_prev = pmc; } if (pmc) { if (pmc_prev) pmc_prev->next = pmc->next; else in_dev->mc_tomb = pmc->next; } spin_unlock_bh(&in_dev->mc_tomb_lock); if (pmc) { for (psf=pmc->tomb; psf; psf=psf_next) { psf_next = psf->sf_next; kfree(psf); } in_dev_put(pmc->interface); kfree(pmc); } } static void igmpv3_clear_delrec(struct in_device *in_dev) { struct ip_mc_list *pmc, *nextpmc; spin_lock_bh(&in_dev->mc_tomb_lock); pmc = in_dev->mc_tomb; in_dev->mc_tomb = NULL; spin_unlock_bh(&in_dev->mc_tomb_lock); for (; pmc; pmc = nextpmc) { nextpmc = pmc->next; ip_mc_clear_src(pmc); in_dev_put(pmc->interface); kfree(pmc); } /* clear dead sources, too */ read_lock(&in_dev->mc_list_lock); for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) { struct ip_sf_list *psf, *psf_next; spin_lock_bh(&pmc->lock); psf = pmc->tomb; pmc->tomb = NULL; spin_unlock_bh(&pmc->lock); for (; psf; psf=psf_next) { psf_next = psf->sf_next; kfree(psf); } } read_unlock(&in_dev->mc_list_lock); } #endif static void igmp_group_dropped(struct ip_mc_list *im) { struct in_device *in_dev = im->interface; #ifdef CONFIG_IP_MULTICAST int reporter; #endif if (im->loaded) { im->loaded = 0; ip_mc_filter_del(in_dev, im->multiaddr); } #ifdef CONFIG_IP_MULTICAST if (im->multiaddr == IGMP_ALL_HOSTS) return; reporter = im->reporter; igmp_stop_timer(im); if (!in_dev->dead) { if (IGMP_V1_SEEN(in_dev)) goto done; if (IGMP_V2_SEEN(in_dev)) { if (reporter) igmp_send_report(in_dev, im, IGMP_HOST_LEAVE_MESSAGE); goto done; } /* IGMPv3 */ igmpv3_add_delrec(in_dev, im); igmp_ifc_event(in_dev); } done: #endif ip_mc_clear_src(im); } static void igmp_group_added(struct ip_mc_list *im) { struct in_device *in_dev = im->interface; if (im->loaded == 0) { im->loaded = 1; ip_mc_filter_add(in_dev, im->multiaddr); } #ifdef CONFIG_IP_MULTICAST if (im->multiaddr == IGMP_ALL_HOSTS) return; if (in_dev->dead) return; if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) { spin_lock_bh(&im->lock); igmp_start_timer(im, IGMP_Initial_Report_Delay); spin_unlock_bh(&im->lock); return; } /* else, v3 */ im->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; igmp_ifc_event(in_dev); #endif } /* * Multicast list managers */ /* * A socket has joined a multicast group on device dev. */ |
8f935bbd7 [IPV4]: ip_mc_{in... |
1173 |
void ip_mc_inc_group(struct in_device *in_dev, __be32 addr) |
1da177e4c Linux-2.6.12-rc2 |
1174 1175 1176 1177 |
{ struct ip_mc_list *im; ASSERT_RTNL(); |
c346dca10 [NET] NETNS: Omit... |
1178 |
if (dev_net(in_dev->dev) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1179 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1180 1181 1182 1183 1184 1185 1186 |
for (im=in_dev->mc_list; im; im=im->next) { if (im->multiaddr == addr) { im->users++; ip_mc_add_src(in_dev, &addr, MCAST_EXCLUDE, 0, NULL, 0); goto out; } } |
8b3a70058 [NET]: Remove mor... |
1187 |
im = kmalloc(sizeof(*im), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 |
if (!im) goto out; im->users=1; im->interface=in_dev; in_dev_hold(in_dev); im->multiaddr=addr; /* initial mode is (EX, empty) */ im->sfmode = MCAST_EXCLUDE; im->sfcount[MCAST_INCLUDE] = 0; im->sfcount[MCAST_EXCLUDE] = 1; im->sources = NULL; im->tomb = NULL; im->crcount = 0; atomic_set(&im->refcnt, 1); spin_lock_init(&im->lock); #ifdef CONFIG_IP_MULTICAST im->tm_running=0; |
b24b8a247 [NET]: Convert in... |
1206 |
setup_timer(&im->timer, &igmp_timer_expire, (unsigned long)im); |
1da177e4c Linux-2.6.12-rc2 |
1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 |
im->unsolicit_count = IGMP_Unsolicited_Report_Count; im->reporter = 0; im->gsquery = 0; #endif im->loaded = 0; write_lock_bh(&in_dev->mc_list_lock); im->next=in_dev->mc_list; in_dev->mc_list=im; write_unlock_bh(&in_dev->mc_list_lock); #ifdef CONFIG_IP_MULTICAST igmpv3_del_delrec(in_dev, im->multiaddr); #endif igmp_group_added(im); if (!in_dev->dead) ip_rt_multicast_event(in_dev); out: return; } /* |
a816c7c71 bonding: Improve ... |
1227 1228 1229 1230 |
* Resend IGMP JOIN report; used for bonding. */ void ip_mc_rejoin_group(struct ip_mc_list *im) { |
08882669e [IPV4]: Fix warni... |
1231 |
#ifdef CONFIG_IP_MULTICAST |
a816c7c71 bonding: Improve ... |
1232 |
struct in_device *in_dev = im->interface; |
a816c7c71 bonding: Improve ... |
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
if (im->multiaddr == IGMP_ALL_HOSTS) return; if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) { igmp_mod_timer(im, IGMP_Initial_Report_Delay); return; } /* else, v3 */ im->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; igmp_ifc_event(in_dev); #endif } /* |
1da177e4c Linux-2.6.12-rc2 |
1248 1249 |
* A socket has left a multicast group on device dev */ |
8f935bbd7 [IPV4]: ip_mc_{in... |
1250 |
void ip_mc_dec_group(struct in_device *in_dev, __be32 addr) |
1da177e4c Linux-2.6.12-rc2 |
1251 1252 |
{ struct ip_mc_list *i, **ip; |
e905a9eda [NET] IPV4: Fix w... |
1253 |
|
1da177e4c Linux-2.6.12-rc2 |
1254 |
ASSERT_RTNL(); |
e905a9eda [NET] IPV4: Fix w... |
1255 |
|
c346dca10 [NET] NETNS: Omit... |
1256 |
if (dev_net(in_dev->dev) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1257 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 |
for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) { if (i->multiaddr==addr) { if (--i->users == 0) { write_lock_bh(&in_dev->mc_list_lock); *ip = i->next; write_unlock_bh(&in_dev->mc_list_lock); igmp_group_dropped(i); if (!in_dev->dead) ip_rt_multicast_event(in_dev); ip_ma_put(i); return; } break; } } } /* Device going down */ void ip_mc_down(struct in_device *in_dev) { struct ip_mc_list *i; ASSERT_RTNL(); |
c346dca10 [NET] NETNS: Omit... |
1284 |
if (dev_net(in_dev->dev) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1285 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 |
for (i=in_dev->mc_list; i; i=i->next) igmp_group_dropped(i); #ifdef CONFIG_IP_MULTICAST in_dev->mr_ifc_count = 0; if (del_timer(&in_dev->mr_ifc_timer)) __in_dev_put(in_dev); in_dev->mr_gq_running = 0; if (del_timer(&in_dev->mr_gq_timer)) __in_dev_put(in_dev); igmpv3_clear_delrec(in_dev); #endif ip_mc_dec_group(in_dev, IGMP_ALL_HOSTS); } void ip_mc_init_dev(struct in_device *in_dev) { ASSERT_RTNL(); |
c346dca10 [NET] NETNS: Omit... |
1305 |
if (dev_net(in_dev->dev) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1306 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1307 1308 1309 |
in_dev->mc_tomb = NULL; #ifdef CONFIG_IP_MULTICAST in_dev->mr_gq_running = 0; |
b24b8a247 [NET]: Convert in... |
1310 1311 |
setup_timer(&in_dev->mr_gq_timer, igmp_gq_timer_expire, (unsigned long)in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1312 |
in_dev->mr_ifc_count = 0; |
b24b8a247 [NET]: Convert in... |
1313 1314 |
setup_timer(&in_dev->mr_ifc_timer, igmp_ifc_timer_expire, (unsigned long)in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 |
in_dev->mr_qrv = IGMP_Unsolicited_Report_Count; #endif rwlock_init(&in_dev->mc_list_lock); spin_lock_init(&in_dev->mc_tomb_lock); } /* Device going up */ void ip_mc_up(struct in_device *in_dev) { struct ip_mc_list *i; ASSERT_RTNL(); |
c346dca10 [NET] NETNS: Omit... |
1329 |
if (dev_net(in_dev->dev) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1330 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 |
ip_mc_inc_group(in_dev, IGMP_ALL_HOSTS); for (i=in_dev->mc_list; i; i=i->next) igmp_group_added(i); } /* * Device is about to be destroyed: clean up. */ void ip_mc_destroy_dev(struct in_device *in_dev) { struct ip_mc_list *i; ASSERT_RTNL(); |
c346dca10 [NET] NETNS: Omit... |
1346 |
if (dev_net(in_dev->dev) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1347 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 |
/* Deactivate timers */ ip_mc_down(in_dev); write_lock_bh(&in_dev->mc_list_lock); while ((i = in_dev->mc_list) != NULL) { in_dev->mc_list = i->next; write_unlock_bh(&in_dev->mc_list_lock); igmp_group_dropped(i); ip_ma_put(i); write_lock_bh(&in_dev->mc_list_lock); } write_unlock_bh(&in_dev->mc_list_lock); } static struct in_device * ip_mc_find_dev(struct ip_mreqn *imr) { struct flowi fl = { .nl_u = { .ip4_u = { .daddr = imr->imr_multiaddr.s_addr } } }; struct rtable *rt; struct net_device *dev = NULL; struct in_device *idev = NULL; if (imr->imr_ifindex) { |
7fee0ca23 [NETNS]: Add netn... |
1373 |
idev = inetdev_by_index(&init_net, imr->imr_ifindex); |
1da177e4c Linux-2.6.12-rc2 |
1374 1375 1376 1377 1378 |
if (idev) __in_dev_put(idev); return idev; } if (imr->imr_address.s_addr) { |
1ab352768 [NETNS]: Add name... |
1379 |
dev = ip_dev_find(&init_net, imr->imr_address.s_addr); |
1da177e4c Linux-2.6.12-rc2 |
1380 1381 |
if (!dev) return NULL; |
153330618 [NET]: dev_put/de... |
1382 |
dev_put(dev); |
1da177e4c Linux-2.6.12-rc2 |
1383 |
} |
f206351a5 [NETNS]: Add name... |
1384 |
if (!dev && !ip_route_output_key(&init_net, &rt, &fl)) { |
1da177e4c Linux-2.6.12-rc2 |
1385 1386 1387 1388 1389 |
dev = rt->u.dst.dev; ip_rt_put(rt); } if (dev) { imr->imr_ifindex = dev->ifindex; |
e5ed63991 [IPV4]: Replace _... |
1390 |
idev = __in_dev_get_rtnl(dev); |
1da177e4c Linux-2.6.12-rc2 |
1391 1392 1393 1394 1395 1396 1397 |
} return idev; } /* * Join a socket to a group */ |
ab32ea5d8 [NET/IPV4/IPV6]: ... |
1398 1399 |
int sysctl_igmp_max_memberships __read_mostly = IP_MAX_MEMBERSHIPS; int sysctl_igmp_max_msf __read_mostly = IP_MAX_MSF; |
1da177e4c Linux-2.6.12-rc2 |
1400 1401 1402 |
static int ip_mc_del1_src(struct ip_mc_list *pmc, int sfmode, |
8f935bbd7 [IPV4]: ip_mc_{in... |
1403 |
__be32 *psfsrc) |
1da177e4c Linux-2.6.12-rc2 |
1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 |
{ struct ip_sf_list *psf, *psf_prev; int rv = 0; psf_prev = NULL; for (psf=pmc->sources; psf; psf=psf->sf_next) { if (psf->sf_inaddr == *psfsrc) break; psf_prev = psf; } if (!psf || psf->sf_count[sfmode] == 0) { /* source filter not found, or count wrong => bug */ return -ESRCH; } psf->sf_count[sfmode]--; if (psf->sf_count[sfmode] == 0) { ip_rt_multicast_event(pmc->interface); } if (!psf->sf_count[MCAST_INCLUDE] && !psf->sf_count[MCAST_EXCLUDE]) { #ifdef CONFIG_IP_MULTICAST struct in_device *in_dev = pmc->interface; #endif /* no more filters for this source */ if (psf_prev) psf_prev->sf_next = psf->sf_next; else pmc->sources = psf->sf_next; #ifdef CONFIG_IP_MULTICAST if (psf->sf_oldin && !IGMP_V1_SEEN(in_dev) && !IGMP_V2_SEEN(in_dev)) { |
e905a9eda [NET] IPV4: Fix w... |
1435 |
psf->sf_crcount = in_dev->mr_qrv ? in_dev->mr_qrv : |
1da177e4c Linux-2.6.12-rc2 |
1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 |
IGMP_Unsolicited_Report_Count; psf->sf_next = pmc->tomb; pmc->tomb = psf; rv = 1; } else #endif kfree(psf); } return rv; } #ifndef CONFIG_IP_MULTICAST #define igmp_ifc_event(x) do { } while (0) #endif |
8f935bbd7 [IPV4]: ip_mc_{in... |
1450 1451 |
static int ip_mc_del_src(struct in_device *in_dev, __be32 *pmca, int sfmode, int sfcount, __be32 *psfsrc, int delta) |
1da177e4c Linux-2.6.12-rc2 |
1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 |
{ struct ip_mc_list *pmc; int changerec = 0; int i, err; if (!in_dev) return -ENODEV; read_lock(&in_dev->mc_list_lock); for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) { if (*pmca == pmc->multiaddr) break; } if (!pmc) { /* MCA not found?? bug */ read_unlock(&in_dev->mc_list_lock); return -ESRCH; } spin_lock_bh(&pmc->lock); read_unlock(&in_dev->mc_list_lock); #ifdef CONFIG_IP_MULTICAST sf_markstate(pmc); #endif if (!delta) { err = -EINVAL; if (!pmc->sfcount[sfmode]) goto out_unlock; pmc->sfcount[sfmode]--; } err = 0; for (i=0; i<sfcount; i++) { int rv = ip_mc_del1_src(pmc, sfmode, &psfsrc[i]); changerec |= rv > 0; if (!err && rv < 0) err = rv; } if (pmc->sfmode == MCAST_EXCLUDE && pmc->sfcount[MCAST_EXCLUDE] == 0 && pmc->sfcount[MCAST_INCLUDE]) { #ifdef CONFIG_IP_MULTICAST struct ip_sf_list *psf; #endif /* filter mode change */ pmc->sfmode = MCAST_INCLUDE; #ifdef CONFIG_IP_MULTICAST |
e905a9eda [NET] IPV4: Fix w... |
1498 |
pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : |
1da177e4c Linux-2.6.12-rc2 |
1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 |
IGMP_Unsolicited_Report_Count; in_dev->mr_ifc_count = pmc->crcount; for (psf=pmc->sources; psf; psf = psf->sf_next) psf->sf_crcount = 0; igmp_ifc_event(pmc->interface); } else if (sf_setstate(pmc) || changerec) { igmp_ifc_event(pmc->interface); #endif } out_unlock: spin_unlock_bh(&pmc->lock); return err; } /* * Add multicast single-source filter to the interface list */ static int ip_mc_add1_src(struct ip_mc_list *pmc, int sfmode, |
8f935bbd7 [IPV4]: ip_mc_{in... |
1517 |
__be32 *psfsrc, int delta) |
1da177e4c Linux-2.6.12-rc2 |
1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 |
{ struct ip_sf_list *psf, *psf_prev; psf_prev = NULL; for (psf=pmc->sources; psf; psf=psf->sf_next) { if (psf->sf_inaddr == *psfsrc) break; psf_prev = psf; } if (!psf) { |
0da974f4f [NET]: Conversion... |
1528 |
psf = kzalloc(sizeof(*psf), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
1529 1530 |
if (!psf) return -ENOBUFS; |
1da177e4c Linux-2.6.12-rc2 |
1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 |
psf->sf_inaddr = *psfsrc; if (psf_prev) { psf_prev->sf_next = psf; } else pmc->sources = psf; } psf->sf_count[sfmode]++; if (psf->sf_count[sfmode] == 1) { ip_rt_multicast_event(pmc->interface); } return 0; } #ifdef CONFIG_IP_MULTICAST static void sf_markstate(struct ip_mc_list *pmc) { struct ip_sf_list *psf; int mca_xcount = pmc->sfcount[MCAST_EXCLUDE]; for (psf=pmc->sources; psf; psf=psf->sf_next) if (pmc->sfcount[MCAST_EXCLUDE]) { psf->sf_oldin = mca_xcount == psf->sf_count[MCAST_EXCLUDE] && !psf->sf_count[MCAST_INCLUDE]; } else psf->sf_oldin = psf->sf_count[MCAST_INCLUDE] != 0; } static int sf_setstate(struct ip_mc_list *pmc) { |
ad12583f4 [IPV4]: Fix multi... |
1561 |
struct ip_sf_list *psf, *dpsf; |
1da177e4c Linux-2.6.12-rc2 |
1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 |
int mca_xcount = pmc->sfcount[MCAST_EXCLUDE]; int qrv = pmc->interface->mr_qrv; int new_in, rv; rv = 0; for (psf=pmc->sources; psf; psf=psf->sf_next) { if (pmc->sfcount[MCAST_EXCLUDE]) { new_in = mca_xcount == psf->sf_count[MCAST_EXCLUDE] && !psf->sf_count[MCAST_INCLUDE]; } else new_in = psf->sf_count[MCAST_INCLUDE] != 0; |
ad12583f4 [IPV4]: Fix multi... |
1573 1574 |
if (new_in) { if (!psf->sf_oldin) { |
76edc6051 [PATCH] ipv4 NULL... |
1575 |
struct ip_sf_list *prev = NULL; |
ad12583f4 [IPV4]: Fix multi... |
1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 |
for (dpsf=pmc->tomb; dpsf; dpsf=dpsf->sf_next) { if (dpsf->sf_inaddr == psf->sf_inaddr) break; prev = dpsf; } if (dpsf) { if (prev) prev->sf_next = dpsf->sf_next; else pmc->tomb = dpsf->sf_next; kfree(dpsf); } psf->sf_crcount = qrv; rv++; } } else if (psf->sf_oldin) { psf->sf_crcount = 0; /* * add or update "delete" records if an active filter * is now inactive */ for (dpsf=pmc->tomb; dpsf; dpsf=dpsf->sf_next) if (dpsf->sf_inaddr == psf->sf_inaddr) break; if (!dpsf) { dpsf = (struct ip_sf_list *) kmalloc(sizeof(*dpsf), GFP_ATOMIC); if (!dpsf) continue; *dpsf = *psf; /* pmc->lock held by callers */ dpsf->sf_next = pmc->tomb; pmc->tomb = dpsf; } dpsf->sf_crcount = qrv; |
1da177e4c Linux-2.6.12-rc2 |
1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 |
rv++; } } return rv; } #endif /* * Add multicast source filter list to the interface list */ |
8f935bbd7 [IPV4]: ip_mc_{in... |
1623 1624 |
static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode, int sfcount, __be32 *psfsrc, int delta) |
1da177e4c Linux-2.6.12-rc2 |
1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 |
{ struct ip_mc_list *pmc; int isexclude; int i, err; if (!in_dev) return -ENODEV; read_lock(&in_dev->mc_list_lock); for (pmc=in_dev->mc_list; pmc; pmc=pmc->next) { if (*pmca == pmc->multiaddr) break; } if (!pmc) { /* MCA not found?? bug */ read_unlock(&in_dev->mc_list_lock); return -ESRCH; } spin_lock_bh(&pmc->lock); read_unlock(&in_dev->mc_list_lock); #ifdef CONFIG_IP_MULTICAST sf_markstate(pmc); #endif isexclude = pmc->sfmode == MCAST_EXCLUDE; if (!delta) pmc->sfcount[sfmode]++; err = 0; for (i=0; i<sfcount; i++) { err = ip_mc_add1_src(pmc, sfmode, &psfsrc[i], delta); if (err) break; } if (err) { int j; pmc->sfcount[sfmode]--; for (j=0; j<i; j++) (void) ip_mc_del1_src(pmc, sfmode, &psfsrc[i]); } else if (isexclude != (pmc->sfcount[MCAST_EXCLUDE] != 0)) { #ifdef CONFIG_IP_MULTICAST |
1da177e4c Linux-2.6.12-rc2 |
1665 |
struct ip_sf_list *psf; |
cfcabdcc2 [NET]: sparse war... |
1666 |
in_dev = pmc->interface; |
1da177e4c Linux-2.6.12-rc2 |
1667 1668 1669 1670 1671 1672 1673 1674 1675 |
#endif /* filter mode change */ if (pmc->sfcount[MCAST_EXCLUDE]) pmc->sfmode = MCAST_EXCLUDE; else if (pmc->sfcount[MCAST_INCLUDE]) pmc->sfmode = MCAST_INCLUDE; #ifdef CONFIG_IP_MULTICAST /* else no filters; keep old mode for reports */ |
e905a9eda [NET] IPV4: Fix w... |
1676 |
pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : |
1da177e4c Linux-2.6.12-rc2 |
1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 |
IGMP_Unsolicited_Report_Count; in_dev->mr_ifc_count = pmc->crcount; for (psf=pmc->sources; psf; psf = psf->sf_next) psf->sf_crcount = 0; igmp_ifc_event(in_dev); } else if (sf_setstate(pmc)) { igmp_ifc_event(in_dev); #endif } spin_unlock_bh(&pmc->lock); return err; } static void ip_mc_clear_src(struct ip_mc_list *pmc) { struct ip_sf_list *psf, *nextpsf; for (psf=pmc->tomb; psf; psf=nextpsf) { nextpsf = psf->sf_next; kfree(psf); } pmc->tomb = NULL; for (psf=pmc->sources; psf; psf=nextpsf) { nextpsf = psf->sf_next; kfree(psf); } pmc->sources = NULL; pmc->sfmode = MCAST_EXCLUDE; |
de9daad90 [MCAST]: Fix MCAS... |
1705 |
pmc->sfcount[MCAST_INCLUDE] = 0; |
1da177e4c Linux-2.6.12-rc2 |
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 |
pmc->sfcount[MCAST_EXCLUDE] = 1; } /* * Join a multicast group */ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr) { int err; |
8f935bbd7 [IPV4]: ip_mc_{in... |
1716 |
__be32 addr = imr->imr_multiaddr.s_addr; |
ca9b907d1 [IPV4]: multicast... |
1717 |
struct ip_mc_socklist *iml=NULL, *i; |
1da177e4c Linux-2.6.12-rc2 |
1718 1719 |
struct in_device *in_dev; struct inet_sock *inet = inet_sk(sk); |
ca9b907d1 [IPV4]: multicast... |
1720 |
int ifindex; |
1da177e4c Linux-2.6.12-rc2 |
1721 |
int count = 0; |
f97c1e0c6 [IPV4] net/ipv4: ... |
1722 |
if (!ipv4_is_multicast(addr)) |
1da177e4c Linux-2.6.12-rc2 |
1723 |
return -EINVAL; |
3b1e0a655 [NET] NETNS: Omit... |
1724 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1725 |
return -EPROTONOSUPPORT; |
6756ae4b4 [NET]: Convert RT... |
1726 |
rtnl_lock(); |
1da177e4c Linux-2.6.12-rc2 |
1727 1728 1729 1730 1731 1732 1733 1734 |
in_dev = ip_mc_find_dev(imr); if (!in_dev) { iml = NULL; err = -ENODEV; goto done; } |
1da177e4c Linux-2.6.12-rc2 |
1735 |
err = -EADDRINUSE; |
ca9b907d1 [IPV4]: multicast... |
1736 |
ifindex = imr->imr_ifindex; |
1da177e4c Linux-2.6.12-rc2 |
1737 |
for (i = inet->mc_list; i; i = i->next) { |
ca9b907d1 [IPV4]: multicast... |
1738 1739 |
if (i->multi.imr_multiaddr.s_addr == addr && i->multi.imr_ifindex == ifindex) |
1da177e4c Linux-2.6.12-rc2 |
1740 |
goto done; |
1da177e4c Linux-2.6.12-rc2 |
1741 1742 1743 |
count++; } err = -ENOBUFS; |
ca9b907d1 [IPV4]: multicast... |
1744 1745 |
if (count >= sysctl_igmp_max_memberships) goto done; |
8b3a70058 [NET]: Remove mor... |
1746 |
iml = sock_kmalloc(sk,sizeof(*iml),GFP_KERNEL); |
ca9b907d1 [IPV4]: multicast... |
1747 |
if (iml == NULL) |
1da177e4c Linux-2.6.12-rc2 |
1748 |
goto done; |
ca9b907d1 [IPV4]: multicast... |
1749 |
|
1da177e4c Linux-2.6.12-rc2 |
1750 1751 |
memcpy(&iml->multi, imr, sizeof(*imr)); iml->next = inet->mc_list; |
1da177e4c Linux-2.6.12-rc2 |
1752 1753 1754 1755 |
iml->sflist = NULL; iml->sfmode = MCAST_EXCLUDE; inet->mc_list = iml; ip_mc_inc_group(in_dev, addr); |
1da177e4c Linux-2.6.12-rc2 |
1756 |
err = 0; |
1da177e4c Linux-2.6.12-rc2 |
1757 |
done: |
6756ae4b4 [NET]: Convert RT... |
1758 |
rtnl_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
1759 1760 1761 1762 1763 1764 1765 |
return err; } static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml, struct in_device *in_dev) { int err; |
cfcabdcc2 [NET]: sparse war... |
1766 |
if (iml->sflist == NULL) { |
1da177e4c Linux-2.6.12-rc2 |
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 |
/* any-source empty exclude case */ return ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr, iml->sfmode, 0, NULL, 0); } err = ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr, iml->sfmode, iml->sflist->sl_count, iml->sflist->sl_addr, 0); sock_kfree_s(sk, iml->sflist, IP_SFLSIZE(iml->sflist->sl_max)); iml->sflist = NULL; return err; } /* * Ask a socket to leave a group. */ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr) { struct inet_sock *inet = inet_sk(sk); struct ip_mc_socklist *iml, **imlp; |
84b42baef [IPV4]: fix IPv4 ... |
1787 |
struct in_device *in_dev; |
8f935bbd7 [IPV4]: ip_mc_{in... |
1788 |
__be32 group = imr->imr_multiaddr.s_addr; |
84b42baef [IPV4]: fix IPv4 ... |
1789 |
u32 ifindex; |
acd6e00b8 [MCAST]: Fix filt... |
1790 |
int ret = -EADDRNOTAVAIL; |
1da177e4c Linux-2.6.12-rc2 |
1791 |
|
3b1e0a655 [NET] NETNS: Omit... |
1792 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1793 |
return -EPROTONOSUPPORT; |
1da177e4c Linux-2.6.12-rc2 |
1794 |
rtnl_lock(); |
84b42baef [IPV4]: fix IPv4 ... |
1795 |
in_dev = ip_mc_find_dev(imr); |
84b42baef [IPV4]: fix IPv4 ... |
1796 |
ifindex = imr->imr_ifindex; |
1da177e4c Linux-2.6.12-rc2 |
1797 |
for (imlp = &inet->mc_list; (iml = *imlp) != NULL; imlp = &iml->next) { |
acd6e00b8 [MCAST]: Fix filt... |
1798 1799 1800 1801 1802 1803 1804 1805 |
if (iml->multi.imr_multiaddr.s_addr != group) continue; if (ifindex) { if (iml->multi.imr_ifindex != ifindex) continue; } else if (imr->imr_address.s_addr && imr->imr_address.s_addr != iml->multi.imr_address.s_addr) continue; |
1da177e4c Linux-2.6.12-rc2 |
1806 |
|
acd6e00b8 [MCAST]: Fix filt... |
1807 |
(void) ip_mc_leave_src(sk, iml, in_dev); |
1da177e4c Linux-2.6.12-rc2 |
1808 |
|
acd6e00b8 [MCAST]: Fix filt... |
1809 1810 1811 |
*imlp = iml->next; if (in_dev) |
84b42baef [IPV4]: fix IPv4 ... |
1812 |
ip_mc_dec_group(in_dev, group); |
acd6e00b8 [MCAST]: Fix filt... |
1813 1814 1815 |
rtnl_unlock(); sock_kfree_s(sk, iml, sizeof(*iml)); return 0; |
1da177e4c Linux-2.6.12-rc2 |
1816 |
} |
acd6e00b8 [MCAST]: Fix filt... |
1817 1818 |
if (!in_dev) ret = -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
1819 |
rtnl_unlock(); |
acd6e00b8 [MCAST]: Fix filt... |
1820 |
return ret; |
1da177e4c Linux-2.6.12-rc2 |
1821 1822 1823 1824 1825 1826 1827 |
} int ip_mc_source(int add, int omode, struct sock *sk, struct ip_mreq_source *mreqs, int ifindex) { int err; struct ip_mreqn imr; |
63007727e [IPV4]: trivial i... |
1828 |
__be32 addr = mreqs->imr_multiaddr; |
1da177e4c Linux-2.6.12-rc2 |
1829 1830 1831 1832 |
struct ip_mc_socklist *pmc; struct in_device *in_dev = NULL; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *psl; |
8cdaaa15d [IPV4]: multicast... |
1833 |
int leavegroup = 0; |
1da177e4c Linux-2.6.12-rc2 |
1834 |
int i, j, rv; |
f97c1e0c6 [IPV4] net/ipv4: ... |
1835 |
if (!ipv4_is_multicast(addr)) |
1da177e4c Linux-2.6.12-rc2 |
1836 |
return -EINVAL; |
3b1e0a655 [NET] NETNS: Omit... |
1837 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1838 |
return -EPROTONOSUPPORT; |
6756ae4b4 [NET]: Convert RT... |
1839 |
rtnl_lock(); |
1da177e4c Linux-2.6.12-rc2 |
1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 |
imr.imr_multiaddr.s_addr = mreqs->imr_multiaddr; imr.imr_address.s_addr = mreqs->imr_interface; imr.imr_ifindex = ifindex; in_dev = ip_mc_find_dev(&imr); if (!in_dev) { err = -ENODEV; goto done; } err = -EADDRNOTAVAIL; for (pmc=inet->mc_list; pmc; pmc=pmc->next) { |
ca9b907d1 [IPV4]: multicast... |
1853 1854 |
if (pmc->multi.imr_multiaddr.s_addr == imr.imr_multiaddr.s_addr && pmc->multi.imr_ifindex == imr.imr_ifindex) |
1da177e4c Linux-2.6.12-rc2 |
1855 1856 |
break; } |
917f2f105 [IPV4]: multicast... |
1857 1858 |
if (!pmc) { /* must have a prior join */ err = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1859 |
goto done; |
917f2f105 [IPV4]: multicast... |
1860 |
} |
1da177e4c Linux-2.6.12-rc2 |
1861 1862 |
/* if a source filter was set, must be the same mode as before */ if (pmc->sflist) { |
917f2f105 [IPV4]: multicast... |
1863 1864 |
if (pmc->sfmode != omode) { err = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1865 |
goto done; |
917f2f105 [IPV4]: multicast... |
1866 |
} |
1da177e4c Linux-2.6.12-rc2 |
1867 1868 1869 |
} else if (pmc->sfmode != omode) { /* allow mode switches for empty-set filters */ ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 0, NULL, 0); |
e905a9eda [NET] IPV4: Fix w... |
1870 |
ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, pmc->sfmode, 0, |
1da177e4c Linux-2.6.12-rc2 |
1871 1872 1873 1874 1875 1876 1877 |
NULL, 0); pmc->sfmode = omode; } psl = pmc->sflist; if (!add) { if (!psl) |
917f2f105 [IPV4]: multicast... |
1878 |
goto done; /* err = -EADDRNOTAVAIL */ |
1da177e4c Linux-2.6.12-rc2 |
1879 1880 1881 |
rv = !0; for (i=0; i<psl->sl_count; i++) { rv = memcmp(&psl->sl_addr[i], &mreqs->imr_sourceaddr, |
63007727e [IPV4]: trivial i... |
1882 |
sizeof(__be32)); |
1da177e4c Linux-2.6.12-rc2 |
1883 1884 1885 1886 |
if (rv == 0) break; } if (rv) /* source not found */ |
917f2f105 [IPV4]: multicast... |
1887 |
goto done; /* err = -EADDRNOTAVAIL */ |
1da177e4c Linux-2.6.12-rc2 |
1888 |
|
8cdaaa15d [IPV4]: multicast... |
1889 1890 1891 1892 1893 |
/* special case - (INCLUDE, empty) == LEAVE_GROUP */ if (psl->sl_count == 1 && omode == MCAST_INCLUDE) { leavegroup = 1; goto done; } |
1da177e4c Linux-2.6.12-rc2 |
1894 |
/* update the interface filter */ |
e905a9eda [NET] IPV4: Fix w... |
1895 |
ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, omode, 1, |
1da177e4c Linux-2.6.12-rc2 |
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 |
&mreqs->imr_sourceaddr, 1); for (j=i+1; j<psl->sl_count; j++) psl->sl_addr[j-1] = psl->sl_addr[j]; psl->sl_count--; err = 0; goto done; } /* else, add a new source to the filter */ if (psl && psl->sl_count >= sysctl_igmp_max_msf) { err = -ENOBUFS; goto done; } if (!psl || psl->sl_count == psl->sl_max) { struct ip_sf_socklist *newpsl; int count = IP_SFBLOCK; if (psl) count += psl->sl_max; |
8b3a70058 [NET]: Remove mor... |
1916 |
newpsl = sock_kmalloc(sk, IP_SFLSIZE(count), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 |
if (!newpsl) { err = -ENOBUFS; goto done; } newpsl->sl_max = count; newpsl->sl_count = count - IP_SFBLOCK; if (psl) { for (i=0; i<psl->sl_count; i++) newpsl->sl_addr[i] = psl->sl_addr[i]; sock_kfree_s(sk, psl, IP_SFLSIZE(psl->sl_max)); } pmc->sflist = psl = newpsl; } rv = 1; /* > 0 for insert logic below if sl_count is 0 */ for (i=0; i<psl->sl_count; i++) { rv = memcmp(&psl->sl_addr[i], &mreqs->imr_sourceaddr, |
63007727e [IPV4]: trivial i... |
1933 |
sizeof(__be32)); |
1da177e4c Linux-2.6.12-rc2 |
1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 |
if (rv == 0) break; } if (rv == 0) /* address already there is an error */ goto done; for (j=psl->sl_count-1; j>=i; j--) psl->sl_addr[j+1] = psl->sl_addr[j]; psl->sl_addr[i] = mreqs->imr_sourceaddr; psl->sl_count++; err = 0; /* update the interface list */ |
e905a9eda [NET] IPV4: Fix w... |
1945 |
ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 1, |
1da177e4c Linux-2.6.12-rc2 |
1946 1947 |
&mreqs->imr_sourceaddr, 1); done: |
6756ae4b4 [NET]: Convert RT... |
1948 |
rtnl_unlock(); |
8cdaaa15d [IPV4]: multicast... |
1949 1950 |
if (leavegroup) return ip_mc_leave_group(sk, &imr); |
1da177e4c Linux-2.6.12-rc2 |
1951 1952 1953 1954 1955 |
return err; } int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex) { |
9951f036f [IPV4]: (INCLUDE,... |
1956 |
int err = 0; |
1da177e4c Linux-2.6.12-rc2 |
1957 |
struct ip_mreqn imr; |
63007727e [IPV4]: trivial i... |
1958 |
__be32 addr = msf->imsf_multiaddr; |
1da177e4c Linux-2.6.12-rc2 |
1959 1960 1961 1962 |
struct ip_mc_socklist *pmc; struct in_device *in_dev; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *newpsl, *psl; |
9951f036f [IPV4]: (INCLUDE,... |
1963 |
int leavegroup = 0; |
1da177e4c Linux-2.6.12-rc2 |
1964 |
|
f97c1e0c6 [IPV4] net/ipv4: ... |
1965 |
if (!ipv4_is_multicast(addr)) |
1da177e4c Linux-2.6.12-rc2 |
1966 1967 1968 1969 |
return -EINVAL; if (msf->imsf_fmode != MCAST_INCLUDE && msf->imsf_fmode != MCAST_EXCLUDE) return -EINVAL; |
3b1e0a655 [NET] NETNS: Omit... |
1970 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
1971 |
return -EPROTONOSUPPORT; |
6756ae4b4 [NET]: Convert RT... |
1972 |
rtnl_lock(); |
1da177e4c Linux-2.6.12-rc2 |
1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 |
imr.imr_multiaddr.s_addr = msf->imsf_multiaddr; imr.imr_address.s_addr = msf->imsf_interface; imr.imr_ifindex = ifindex; in_dev = ip_mc_find_dev(&imr); if (!in_dev) { err = -ENODEV; goto done; } |
1da177e4c Linux-2.6.12-rc2 |
1983 |
|
9951f036f [IPV4]: (INCLUDE,... |
1984 1985 1986 1987 1988 |
/* special case - (INCLUDE, empty) == LEAVE_GROUP */ if (msf->imsf_fmode == MCAST_INCLUDE && msf->imsf_numsrc == 0) { leavegroup = 1; goto done; } |
1da177e4c Linux-2.6.12-rc2 |
1989 1990 1991 1992 1993 |
for (pmc=inet->mc_list; pmc; pmc=pmc->next) { if (pmc->multi.imr_multiaddr.s_addr == msf->imsf_multiaddr && pmc->multi.imr_ifindex == imr.imr_ifindex) break; } |
917f2f105 [IPV4]: multicast... |
1994 1995 |
if (!pmc) { /* must have a prior join */ err = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1996 |
goto done; |
917f2f105 [IPV4]: multicast... |
1997 |
} |
1da177e4c Linux-2.6.12-rc2 |
1998 |
if (msf->imsf_numsrc) { |
8b3a70058 [NET]: Remove mor... |
1999 2000 |
newpsl = sock_kmalloc(sk, IP_SFLSIZE(msf->imsf_numsrc), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 |
if (!newpsl) { err = -ENOBUFS; goto done; } newpsl->sl_max = newpsl->sl_count = msf->imsf_numsrc; memcpy(newpsl->sl_addr, msf->imsf_slist, msf->imsf_numsrc * sizeof(msf->imsf_slist[0])); err = ip_mc_add_src(in_dev, &msf->imsf_multiaddr, msf->imsf_fmode, newpsl->sl_count, newpsl->sl_addr, 0); if (err) { sock_kfree_s(sk, newpsl, IP_SFLSIZE(newpsl->sl_max)); goto done; } |
8713dbf05 [MCAST]: ip[6]_mc... |
2014 |
} else { |
1da177e4c Linux-2.6.12-rc2 |
2015 |
newpsl = NULL; |
8713dbf05 [MCAST]: ip[6]_mc... |
2016 2017 2018 |
(void) ip_mc_add_src(in_dev, &msf->imsf_multiaddr, msf->imsf_fmode, 0, NULL, 0); } |
1da177e4c Linux-2.6.12-rc2 |
2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 |
psl = pmc->sflist; if (psl) { (void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode, psl->sl_count, psl->sl_addr, 0); sock_kfree_s(sk, psl, IP_SFLSIZE(psl->sl_max)); } else (void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode, 0, NULL, 0); pmc->sflist = newpsl; pmc->sfmode = msf->imsf_fmode; |
917f2f105 [IPV4]: multicast... |
2029 |
err = 0; |
1da177e4c Linux-2.6.12-rc2 |
2030 |
done: |
6756ae4b4 [NET]: Convert RT... |
2031 |
rtnl_unlock(); |
9951f036f [IPV4]: (INCLUDE,... |
2032 2033 |
if (leavegroup) err = ip_mc_leave_group(sk, &imr); |
1da177e4c Linux-2.6.12-rc2 |
2034 2035 2036 2037 2038 2039 2040 2041 |
return err; } int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf, struct ip_msfilter __user *optval, int __user *optlen) { int err, len, count, copycount; struct ip_mreqn imr; |
63007727e [IPV4]: trivial i... |
2042 |
__be32 addr = msf->imsf_multiaddr; |
1da177e4c Linux-2.6.12-rc2 |
2043 2044 2045 2046 |
struct ip_mc_socklist *pmc; struct in_device *in_dev; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *psl; |
f97c1e0c6 [IPV4] net/ipv4: ... |
2047 |
if (!ipv4_is_multicast(addr)) |
1da177e4c Linux-2.6.12-rc2 |
2048 |
return -EINVAL; |
3b1e0a655 [NET] NETNS: Omit... |
2049 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
2050 |
return -EPROTONOSUPPORT; |
6756ae4b4 [NET]: Convert RT... |
2051 |
rtnl_lock(); |
1da177e4c Linux-2.6.12-rc2 |
2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 |
imr.imr_multiaddr.s_addr = msf->imsf_multiaddr; imr.imr_address.s_addr = msf->imsf_interface; imr.imr_ifindex = 0; in_dev = ip_mc_find_dev(&imr); if (!in_dev) { err = -ENODEV; goto done; } err = -EADDRNOTAVAIL; for (pmc=inet->mc_list; pmc; pmc=pmc->next) { if (pmc->multi.imr_multiaddr.s_addr == msf->imsf_multiaddr && pmc->multi.imr_ifindex == imr.imr_ifindex) break; } if (!pmc) /* must have a prior join */ goto done; msf->imsf_fmode = pmc->sfmode; psl = pmc->sflist; |
6756ae4b4 [NET]: Convert RT... |
2073 |
rtnl_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 |
if (!psl) { len = 0; count = 0; } else { count = psl->sl_count; } copycount = count < msf->imsf_numsrc ? count : msf->imsf_numsrc; len = copycount * sizeof(psl->sl_addr[0]); msf->imsf_numsrc = count; if (put_user(IP_MSFILTER_SIZE(copycount), optlen) || copy_to_user(optval, msf, IP_MSFILTER_SIZE(0))) { return -EFAULT; } if (len && copy_to_user(&optval->imsf_slist[0], psl->sl_addr, len)) return -EFAULT; return 0; done: |
6756ae4b4 [NET]: Convert RT... |
2092 |
rtnl_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
2093 2094 2095 2096 2097 2098 2099 2100 |
return err; } int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf, struct group_filter __user *optval, int __user *optlen) { int err, i, count, copycount; struct sockaddr_in *psin; |
63007727e [IPV4]: trivial i... |
2101 |
__be32 addr; |
1da177e4c Linux-2.6.12-rc2 |
2102 2103 2104 2105 2106 2107 2108 2109 |
struct ip_mc_socklist *pmc; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *psl; psin = (struct sockaddr_in *)&gsf->gf_group; if (psin->sin_family != AF_INET) return -EINVAL; addr = psin->sin_addr.s_addr; |
f97c1e0c6 [IPV4] net/ipv4: ... |
2110 |
if (!ipv4_is_multicast(addr)) |
1da177e4c Linux-2.6.12-rc2 |
2111 |
return -EINVAL; |
3b1e0a655 [NET] NETNS: Omit... |
2112 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
2113 |
return -EPROTONOSUPPORT; |
6756ae4b4 [NET]: Convert RT... |
2114 |
rtnl_lock(); |
1da177e4c Linux-2.6.12-rc2 |
2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 |
err = -EADDRNOTAVAIL; for (pmc=inet->mc_list; pmc; pmc=pmc->next) { if (pmc->multi.imr_multiaddr.s_addr == addr && pmc->multi.imr_ifindex == gsf->gf_interface) break; } if (!pmc) /* must have a prior join */ goto done; gsf->gf_fmode = pmc->sfmode; psl = pmc->sflist; |
6756ae4b4 [NET]: Convert RT... |
2127 |
rtnl_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
2128 2129 2130 2131 2132 2133 2134 2135 |
count = psl ? psl->sl_count : 0; copycount = count < gsf->gf_numsrc ? count : gsf->gf_numsrc; gsf->gf_numsrc = count; if (put_user(GROUP_FILTER_SIZE(copycount), optlen) || copy_to_user(optval, gsf, GROUP_FILTER_SIZE(0))) { return -EFAULT; } for (i=0; i<copycount; i++) { |
1da177e4c Linux-2.6.12-rc2 |
2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 |
struct sockaddr_storage ss; psin = (struct sockaddr_in *)&ss; memset(&ss, 0, sizeof(ss)); psin->sin_family = AF_INET; psin->sin_addr.s_addr = psl->sl_addr[i]; if (copy_to_user(&optval->gf_slist[i], &ss, sizeof(ss))) return -EFAULT; } return 0; done: |
6756ae4b4 [NET]: Convert RT... |
2147 |
rtnl_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
2148 2149 2150 2151 2152 2153 |
return err; } /* * check if a multicast source filter allows delivery for a given <src,dst,intf> */ |
c0cda068a [IPV4]: ip_mc_sf_... |
2154 |
int ip_mc_sf_allow(struct sock *sk, __be32 loc_addr, __be32 rmt_addr, int dif) |
1da177e4c Linux-2.6.12-rc2 |
2155 2156 2157 2158 2159 |
{ struct inet_sock *inet = inet_sk(sk); struct ip_mc_socklist *pmc; struct ip_sf_socklist *psl; int i; |
f97c1e0c6 [IPV4] net/ipv4: ... |
2160 |
if (!ipv4_is_multicast(loc_addr)) |
1da177e4c Linux-2.6.12-rc2 |
2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 |
return 1; for (pmc=inet->mc_list; pmc; pmc=pmc->next) { if (pmc->multi.imr_multiaddr.s_addr == loc_addr && pmc->multi.imr_ifindex == dif) break; } if (!pmc) return 1; psl = pmc->sflist; if (!psl) return pmc->sfmode == MCAST_EXCLUDE; for (i=0; i<psl->sl_count; i++) { if (psl->sl_addr[i] == rmt_addr) break; } if (pmc->sfmode == MCAST_INCLUDE && i >= psl->sl_count) return 0; if (pmc->sfmode == MCAST_EXCLUDE && i < psl->sl_count) return 0; return 1; } /* * A socket is closing. */ void ip_mc_drop_socket(struct sock *sk) { struct inet_sock *inet = inet_sk(sk); struct ip_mc_socklist *iml; if (inet->mc_list == NULL) return; |
3b1e0a655 [NET] NETNS: Omit... |
2196 |
if (sock_net(sk) != &init_net) |
2430aa85d [NETNS]: Disable ... |
2197 |
return; |
1da177e4c Linux-2.6.12-rc2 |
2198 2199 2200 2201 |
rtnl_lock(); while ((iml = inet->mc_list) != NULL) { struct in_device *in_dev; inet->mc_list = iml->next; |
7fee0ca23 [NETNS]: Add netn... |
2202 |
in_dev = inetdev_by_index(&init_net, iml->multi.imr_ifindex); |
bb699cbca [IPV4]: Possible ... |
2203 2204 |
(void) ip_mc_leave_src(sk, iml, in_dev); if (in_dev != NULL) { |
1da177e4c Linux-2.6.12-rc2 |
2205 2206 2207 2208 |
ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr); in_dev_put(in_dev); } sock_kfree_s(sk, iml, sizeof(*iml)); |
1da177e4c Linux-2.6.12-rc2 |
2209 2210 2211 |
} rtnl_unlock(); } |
a60c4923d [IPV4]: ip_check_... |
2212 |
int ip_check_mc(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 proto) |
1da177e4c Linux-2.6.12-rc2 |
2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 |
{ struct ip_mc_list *im; struct ip_sf_list *psf; int rv = 0; read_lock(&in_dev->mc_list_lock); for (im=in_dev->mc_list; im; im=im->next) { if (im->multiaddr == mc_addr) break; } if (im && proto == IPPROTO_IGMP) { rv = 1; } else if (im) { if (src_addr) { for (psf=im->sources; psf; psf=psf->sf_next) { if (psf->sf_inaddr == src_addr) break; } if (psf) rv = psf->sf_count[MCAST_INCLUDE] || psf->sf_count[MCAST_EXCLUDE] != im->sfcount[MCAST_EXCLUDE]; else rv = im->sfcount[MCAST_EXCLUDE] != 0; } else rv = 1; /* unspecified source; tentatively allow */ } read_unlock(&in_dev->mc_list_lock); return rv; } #if defined(CONFIG_PROC_FS) struct igmp_mc_iter_state { struct net_device *dev; struct in_device *in_dev; }; #define igmp_mc_seq_private(seq) ((struct igmp_mc_iter_state *)(seq)->private) static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq) { struct ip_mc_list *im = NULL; struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); |
7562f876c [NET]: Rework dev... |
2256 |
state->in_dev = NULL; |
881d966b4 [NET]: Make the d... |
2257 |
for_each_netdev(&init_net, state->dev) { |
1da177e4c Linux-2.6.12-rc2 |
2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 |
struct in_device *in_dev; in_dev = in_dev_get(state->dev); if (!in_dev) continue; read_lock(&in_dev->mc_list_lock); im = in_dev->mc_list; if (im) { state->in_dev = in_dev; break; } read_unlock(&in_dev->mc_list_lock); in_dev_put(in_dev); } return im; } static struct ip_mc_list *igmp_mc_get_next(struct seq_file *seq, struct ip_mc_list *im) { struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); im = im->next; while (!im) { if (likely(state->in_dev != NULL)) { read_unlock(&state->in_dev->mc_list_lock); in_dev_put(state->in_dev); } |
7562f876c [NET]: Rework dev... |
2283 |
state->dev = next_net_device(state->dev); |
1da177e4c Linux-2.6.12-rc2 |
2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 |
if (!state->dev) { state->in_dev = NULL; break; } state->in_dev = in_dev_get(state->dev); if (!state->in_dev) continue; read_lock(&state->in_dev->mc_list_lock); im = state->in_dev->mc_list; } return im; } static struct ip_mc_list *igmp_mc_get_idx(struct seq_file *seq, loff_t pos) { struct ip_mc_list *im = igmp_mc_get_first(seq); if (im) while (pos && (im = igmp_mc_get_next(seq, im)) != NULL) --pos; return pos ? NULL : im; } static void *igmp_mc_seq_start(struct seq_file *seq, loff_t *pos) |
dd329bfa9 [IPV4]: igmp spar... |
2307 |
__acquires(dev_base_lock) |
1da177e4c Linux-2.6.12-rc2 |
2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 |
{ read_lock(&dev_base_lock); return *pos ? igmp_mc_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } static void *igmp_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct ip_mc_list *im; if (v == SEQ_START_TOKEN) im = igmp_mc_get_first(seq); else im = igmp_mc_get_next(seq, v); ++*pos; return im; } static void igmp_mc_seq_stop(struct seq_file *seq, void *v) |
dd329bfa9 [IPV4]: igmp spar... |
2325 |
__releases(dev_base_lock) |
1da177e4c Linux-2.6.12-rc2 |
2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 |
{ struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); if (likely(state->in_dev != NULL)) { read_unlock(&state->in_dev->mc_list_lock); in_dev_put(state->in_dev); state->in_dev = NULL; } state->dev = NULL; read_unlock(&dev_base_lock); } static int igmp_mc_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) |
e905a9eda [NET] IPV4: Fix w... |
2340 |
seq_puts(seq, |
1da177e4c Linux-2.6.12-rc2 |
2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 |
"Idx\tDevice : Count Querier\tGroup Users Timer\tReporter "); else { struct ip_mc_list *im = (struct ip_mc_list *)v; struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); char *querier; #ifdef CONFIG_IP_MULTICAST querier = IGMP_V1_SEEN(state->in_dev) ? "V1" : IGMP_V2_SEEN(state->in_dev) ? "V2" : "V3"; #else querier = "NONE"; #endif if (state->in_dev->mc_list == im) { seq_printf(seq, "%d\t%-10s: %5d %7s ", state->dev->ifindex, state->dev->name, state->dev->mc_count, querier); } seq_printf(seq, |
338fcf988 [IPV4] igmp: Fixu... |
2362 2363 |
"\t\t\t\t%08X %5d %d:%08lX\t\t%d ", |
1da177e4c Linux-2.6.12-rc2 |
2364 2365 2366 2367 2368 2369 2370 |
im->multiaddr, im->users, im->tm_running, im->tm_running ? jiffies_to_clock_t(im->timer.expires-jiffies) : 0, im->reporter); } return 0; } |
f690808e1 [NET]: make seq_o... |
2371 |
static const struct seq_operations igmp_mc_seq_ops = { |
1da177e4c Linux-2.6.12-rc2 |
2372 2373 2374 2375 2376 2377 2378 2379 |
.start = igmp_mc_seq_start, .next = igmp_mc_seq_next, .stop = igmp_mc_seq_stop, .show = igmp_mc_seq_show, }; static int igmp_mc_seq_open(struct inode *inode, struct file *file) { |
cf7732e4c [NET]: Make core ... |
2380 2381 |
return seq_open_private(file, &igmp_mc_seq_ops, sizeof(struct igmp_mc_iter_state)); |
1da177e4c Linux-2.6.12-rc2 |
2382 |
} |
9a32144e9 [PATCH] mark stru... |
2383 |
static const struct file_operations igmp_mc_seq_fops = { |
1da177e4c Linux-2.6.12-rc2 |
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 |
.owner = THIS_MODULE, .open = igmp_mc_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, }; struct igmp_mcf_iter_state { struct net_device *dev; struct in_device *idev; struct ip_mc_list *im; }; #define igmp_mcf_seq_private(seq) ((struct igmp_mcf_iter_state *)(seq)->private) static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq) { struct ip_sf_list *psf = NULL; struct ip_mc_list *im = NULL; struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); |
7562f876c [NET]: Rework dev... |
2404 2405 |
state->idev = NULL; state->im = NULL; |
881d966b4 [NET]: Make the d... |
2406 |
for_each_netdev(&init_net, state->dev) { |
1da177e4c Linux-2.6.12-rc2 |
2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 |
struct in_device *idev; idev = in_dev_get(state->dev); if (unlikely(idev == NULL)) continue; read_lock(&idev->mc_list_lock); im = idev->mc_list; if (likely(im != NULL)) { spin_lock_bh(&im->lock); psf = im->sources; if (likely(psf != NULL)) { state->im = im; state->idev = idev; break; } spin_unlock_bh(&im->lock); } read_unlock(&idev->mc_list_lock); in_dev_put(idev); } return psf; } static struct ip_sf_list *igmp_mcf_get_next(struct seq_file *seq, struct ip_sf_list *psf) { struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); psf = psf->sf_next; while (!psf) { spin_unlock_bh(&state->im->lock); state->im = state->im->next; while (!state->im) { if (likely(state->idev != NULL)) { read_unlock(&state->idev->mc_list_lock); in_dev_put(state->idev); } |
7562f876c [NET]: Rework dev... |
2442 |
state->dev = next_net_device(state->dev); |
1da177e4c Linux-2.6.12-rc2 |
2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 |
if (!state->dev) { state->idev = NULL; goto out; } state->idev = in_dev_get(state->dev); if (!state->idev) continue; read_lock(&state->idev->mc_list_lock); state->im = state->idev->mc_list; } if (!state->im) break; spin_lock_bh(&state->im->lock); psf = state->im->sources; } out: return psf; } static struct ip_sf_list *igmp_mcf_get_idx(struct seq_file *seq, loff_t pos) { struct ip_sf_list *psf = igmp_mcf_get_first(seq); if (psf) while (pos && (psf = igmp_mcf_get_next(seq, psf)) != NULL) --pos; return pos ? NULL : psf; } static void *igmp_mcf_seq_start(struct seq_file *seq, loff_t *pos) { read_lock(&dev_base_lock); return *pos ? igmp_mcf_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } static void *igmp_mcf_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct ip_sf_list *psf; if (v == SEQ_START_TOKEN) psf = igmp_mcf_get_first(seq); else psf = igmp_mcf_get_next(seq, v); ++*pos; return psf; } static void igmp_mcf_seq_stop(struct seq_file *seq, void *v) { struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); if (likely(state->im != NULL)) { spin_unlock_bh(&state->im->lock); state->im = NULL; } if (likely(state->idev != NULL)) { read_unlock(&state->idev->mc_list_lock); in_dev_put(state->idev); state->idev = NULL; } state->dev = NULL; read_unlock(&dev_base_lock); } static int igmp_mcf_seq_show(struct seq_file *seq, void *v) { struct ip_sf_list *psf = (struct ip_sf_list *)v; struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); if (v == SEQ_START_TOKEN) { |
e905a9eda [NET] IPV4: Fix w... |
2510 |
seq_printf(seq, |
1da177e4c Linux-2.6.12-rc2 |
2511 2512 2513 2514 2515 2516 2517 2518 |
"%3s %6s " "%10s %10s %6s %6s ", "Idx", "Device", "MCA", "SRC", "INC", "EXC"); } else { seq_printf(seq, "%3d %6.6s 0x%08x " |
e905a9eda [NET] IPV4: Fix w... |
2519 2520 2521 |
"0x%08x %6lu %6lu ", state->dev->ifindex, state->dev->name, |
1da177e4c Linux-2.6.12-rc2 |
2522 2523 2524 2525 2526 2527 2528 |
ntohl(state->im->multiaddr), ntohl(psf->sf_inaddr), psf->sf_count[MCAST_INCLUDE], psf->sf_count[MCAST_EXCLUDE]); } return 0; } |
f690808e1 [NET]: make seq_o... |
2529 |
static const struct seq_operations igmp_mcf_seq_ops = { |
1da177e4c Linux-2.6.12-rc2 |
2530 2531 2532 2533 2534 2535 2536 2537 |
.start = igmp_mcf_seq_start, .next = igmp_mcf_seq_next, .stop = igmp_mcf_seq_stop, .show = igmp_mcf_seq_show, }; static int igmp_mcf_seq_open(struct inode *inode, struct file *file) { |
cf7732e4c [NET]: Make core ... |
2538 2539 |
return seq_open_private(file, &igmp_mcf_seq_ops, sizeof(struct igmp_mcf_iter_state)); |
1da177e4c Linux-2.6.12-rc2 |
2540 |
} |
9a32144e9 [PATCH] mark stru... |
2541 |
static const struct file_operations igmp_mcf_seq_fops = { |
1da177e4c Linux-2.6.12-rc2 |
2542 2543 2544 2545 2546 2547 2548 2549 2550 |
.owner = THIS_MODULE, .open = igmp_mcf_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, }; int __init igmp_mc_proc_init(void) { |
457c4cbc5 [NET]: Make /proc... |
2551 2552 |
proc_net_fops_create(&init_net, "igmp", S_IRUGO, &igmp_mc_seq_fops); proc_net_fops_create(&init_net, "mcfilter", S_IRUGO, &igmp_mcf_seq_fops); |
1da177e4c Linux-2.6.12-rc2 |
2553 2554 2555 2556 2557 2558 2559 |
return 0; } #endif EXPORT_SYMBOL(ip_mc_dec_group); EXPORT_SYMBOL(ip_mc_inc_group); EXPORT_SYMBOL(ip_mc_join_group); |
a816c7c71 bonding: Improve ... |
2560 |
EXPORT_SYMBOL(ip_mc_rejoin_group); |