X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fipv4%2Figmp.c;h=6110c6d6e61384491b18bf6734ade5cc381d90d0;hb=d8dd15781dd621c5ceab79083f4c5112787863f5;hp=58be8227b0cb95975ef5eae527b4de88e352dd08;hpb=ab32ea5d8a760e7dd4339634e95d7be24ee5b842;p=safe%2Fjmp%2Flinux-2.6 diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 58be822..6110c6d 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -8,10 +8,8 @@ * 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 * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -35,7 +33,7 @@ * * Chih-Jen Chang : Tried to revise IGMP to Version 2 * Tsu-Sheng Tsao E-mail: chihjenc@scf.usc.edu and tsusheng@scf.usc.edu - * The enhancements are mainly based on Steve Deering's + * The enhancements are mainly based on Steve Deering's * 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 @@ -49,11 +47,11 @@ * 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 - * memberships but was being deleted, - * which caused a "del_timer() called + * memberships but was being deleted, + * which caused a "del_timer() called * from %p with timer not initialized\n" * message (960131). - * Christian Daudt : removed del_timer from + * Christian Daudt : removed del_timer from * igmp_timer_expire function (960205). * Christian Daudt : igmp_heard_report now only calls * igmp_timer_expire if tm->running is @@ -91,6 +89,7 @@ #include #include +#include #include #include #include @@ -128,24 +127,26 @@ * contradict to specs provided this delay is small enough. */ -#define IGMP_V1_SEEN(in_dev) (ipv4_devconf.force_igmp_version == 1 || \ - (in_dev)->cnf.force_igmp_version == 1 || \ - ((in_dev)->mr_v1_seen && \ - time_before(jiffies, (in_dev)->mr_v1_seen))) -#define IGMP_V2_SEEN(in_dev) (ipv4_devconf.force_igmp_version == 2 || \ - (in_dev)->cnf.force_igmp_version == 2 || \ - ((in_dev)->mr_v2_seen && \ - time_before(jiffies, (in_dev)->mr_v2_seen))) +#define IGMP_V1_SEEN(in_dev) \ + (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 1 || \ + 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) \ + (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), FORCE_IGMP_VERSION) == 2 || \ + IN_DEV_CONF_GET((in_dev), FORCE_IGMP_VERSION) == 2 || \ + ((in_dev)->mr_v2_seen && \ + time_before(jiffies, (in_dev)->mr_v2_seen))) static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im); -static void igmpv3_del_delrec(struct in_device *in_dev, __u32 multiaddr); +static void igmpv3_del_delrec(struct in_device *in_dev, __be32 multiaddr); 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); -static int ip_mc_add_src(struct in_device *in_dev, __u32 *pmca, int sfmode, - int sfcount, __u32 *psfsrc, int delta); +static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode, + int sfcount, __be32 *psfsrc, int delta); static void ip_ma_put(struct ip_mc_list *im) { @@ -166,7 +167,7 @@ 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->tm_running = 0; im->reporter = 0; im->unsolicit_count = 0; spin_unlock_bh(&im->lock); @@ -175,9 +176,9 @@ static __inline__ void igmp_stop_timer(struct ip_mc_list *im) /* 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; + int tv = net_random() % max_delay; - im->tm_running=1; + im->tm_running = 1; if (!mod_timer(&im->timer, jiffies+tv+2)) atomic_inc(&im->refcnt); } @@ -206,7 +207,7 @@ static void igmp_mod_timer(struct ip_mc_list *im, int max_delay) if (del_timer(&im->timer)) { if ((long)(im->timer.expires-jiffies) < max_delay) { add_timer(&im->timer); - im->tm_running=1; + im->tm_running = 1; spin_unlock_bh(&im->lock); return; } @@ -288,8 +289,9 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) struct rtable *rt; struct iphdr *pip; struct igmpv3_report *pig; + struct net *net = dev_net(dev); - skb = alloc_skb(size + LL_RESERVED_SPACE(dev), GFP_ATOMIC); + skb = alloc_skb(size + LL_ALLOCATED_SPACE(dev), GFP_ATOMIC); if (skb == NULL) return NULL; @@ -298,7 +300,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) .nl_u = { .ip4_u = { .daddr = IGMPV3_ALL_MCR } }, .proto = IPPROTO_IGMP }; - if (ip_route_output_key(&rt, &fl)) { + if (ip_route_output_key(net, &rt, &fl)) { kfree_skb(skb); return NULL; } @@ -309,12 +311,14 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) return NULL; } - skb->dst = &rt->u.dst; + skb_dst_set(skb, &rt->u.dst); skb->dev = dev; skb_reserve(skb, LL_RESERVED_SPACE(dev)); - skb->nh.iph = pip =(struct iphdr *)skb_put(skb, sizeof(struct iphdr)+4); + skb_reset_network_header(skb); + pip = ip_hdr(skb); + skb_put(skb, sizeof(struct iphdr) + 4); pip->version = 4; pip->ihl = (sizeof(struct iphdr)+4)>>2; @@ -331,8 +335,9 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) ((u8*)&pip[1])[2] = 0; ((u8*)&pip[1])[3] = 0; - pig =(struct igmpv3_report *)skb_put(skb, sizeof(*pig)); - skb->h.igmph = (struct igmphdr *)pig; + skb->transport_header = skb->network_header + sizeof(struct iphdr) + 4; + skb_put(skb, sizeof(*pig)); + pig = igmpv3_report_hdr(skb); pig->type = IGMPV3_HOST_MEMBERSHIP_REPORT; pig->resv1 = 0; pig->csum = 0; @@ -343,24 +348,17 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) static int igmpv3_sendpack(struct sk_buff *skb) { - struct iphdr *pip = skb->nh.iph; - struct igmphdr *pig = skb->h.igmph; - int iplen, igmplen; - - iplen = skb->tail - (unsigned char *)skb->nh.iph; - pip->tot_len = htons(iplen); - ip_send_check(pip); + struct igmphdr *pig = igmp_hdr(skb); + const int igmplen = skb->tail - skb->transport_header; - igmplen = skb->tail - (unsigned char *)skb->h.igmph; - pig->csum = ip_compute_csum((void *)skb->h.igmph, igmplen); + pig->csum = ip_compute_csum(igmp_hdr(skb), igmplen); - return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, skb->dev, - dst_output); + return ip_local_out(skb); } 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); + 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, @@ -379,7 +377,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc, pgr->grec_auxwords = 0; pgr->grec_nsrcs = 0; pgr->grec_mca = pmc->multiaddr; - pih = (struct igmpv3_report *)skb->h.igmph; + pih = igmpv3_report_hdr(skb); pih->ngrec = htons(ntohs(pih->ngrec)+1); *ppgr = pgr; return skb; @@ -412,7 +410,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, if (!*psf_list) goto empty_source; - pih = skb ? (struct igmpv3_report *)skb->h.igmph : NULL; + pih = skb ? igmpv3_report_hdr(skb) : NULL; /* EX and TO_EX get a fresh packet, if needed */ if (truncate) { @@ -426,7 +424,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, first = 1; psf_prev = NULL; for (psf=*psf_list; psf; psf=psf_next) { - u32 *psrc; + __be32 *psrc; psf_next = psf->sf_next; @@ -439,7 +437,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, if (isquery) psf->sf_gsresp = 0; - if (AVAILABLE(skb) < sizeof(u32) + + if (AVAILABLE(skb) < sizeof(__be32) + first*sizeof(struct igmpv3_grec)) { if (truncate && !first) break; /* truncate these */ @@ -455,7 +453,9 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, skb = add_grhead(skb, pmc, type, &pgr); first = 0; } - psrc = (u32 *)skb_put(skb, sizeof(u32)); + if (!skb) + return NULL; + psrc = (__be32 *)skb_put(skb, sizeof(__be32)); *psrc = psf->sf_inaddr; scount++; stotal++; if ((type == IGMPV3_ALLOW_NEW_SOURCES || @@ -630,8 +630,9 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, struct igmphdr *ih; struct rtable *rt; struct net_device *dev = in_dev->dev; - u32 group = pmc ? pmc->multiaddr : 0; - u32 dst; + struct net *net = dev_net(dev); + __be32 group = pmc ? pmc->multiaddr : 0; + __be32 dst; if (type == IGMPV3_HOST_MEMBERSHIP_REPORT) return igmpv3_send_report(in_dev, pmc); @@ -644,7 +645,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, struct flowi fl = { .oif = dev->ifindex, .nl_u = { .ip4_u = { .daddr = dst } }, .proto = IPPROTO_IGMP }; - if (ip_route_output_key(&rt, &fl)) + if (ip_route_output_key(net, &rt, &fl)) return -1; } if (rt->rt_src == 0) { @@ -652,17 +653,19 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, return -1; } - skb=alloc_skb(IGMP_SIZE+LL_RESERVED_SPACE(dev), GFP_ATOMIC); + skb = alloc_skb(IGMP_SIZE+LL_ALLOCATED_SPACE(dev), GFP_ATOMIC); if (skb == NULL) { ip_rt_put(rt); return -1; } - skb->dst = &rt->u.dst; + skb_dst_set(skb, &rt->u.dst); skb_reserve(skb, LL_RESERVED_SPACE(dev)); - skb->nh.iph = iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr)+4); + skb_reset_network_header(skb); + iph = ip_hdr(skb); + skb_put(skb, sizeof(struct iphdr) + 4); iph->version = 4; iph->ihl = (sizeof(struct iphdr)+4)>>2; @@ -672,23 +675,20 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, iph->daddr = dst; iph->saddr = rt->rt_src; iph->protocol = IPPROTO_IGMP; - iph->tot_len = htons(IGMP_SIZE); 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; - ip_send_check(iph); 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)); + ih->type = type; + ih->code = 0; + ih->csum = 0; + ih->group = group; + ih->csum = ip_compute_csum((void *)ih, sizeof(struct igmphdr)); - return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, - dst_output); + return ip_local_out(skb); } static void igmp_gq_timer_expire(unsigned long data) @@ -716,7 +716,7 @@ static void igmp_ifc_event(struct in_device *in_dev) { if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) return; - in_dev->mr_ifc_count = in_dev->mr_qrv ? in_dev->mr_qrv : + in_dev->mr_ifc_count = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; igmp_ifc_start_timer(in_dev, 1); } @@ -728,7 +728,7 @@ static void igmp_timer_expire(unsigned long data) struct in_device *in_dev = im->interface; spin_lock(&im->lock); - im->tm_running=0; + im->tm_running = 0; if (im->unsolicit_count) { im->unsolicit_count--; @@ -748,7 +748,7 @@ static void igmp_timer_expire(unsigned long data) } /* mark EXCLUDE-mode sources */ -static int igmp_xmarksources(struct ip_mc_list *pmc, int nsrcs, __u32 *srcs) +static int igmp_xmarksources(struct ip_mc_list *pmc, int nsrcs, __be32 *srcs) { struct ip_sf_list *psf; int i, scount; @@ -775,7 +775,7 @@ static int igmp_xmarksources(struct ip_mc_list *pmc, int nsrcs, __u32 *srcs) return 1; } -static int igmp_marksources(struct ip_mc_list *pmc, int nsrcs, __u32 *srcs) +static int igmp_marksources(struct ip_mc_list *pmc, int nsrcs, __be32 *srcs) { struct ip_sf_list *psf; int i, scount; @@ -803,7 +803,7 @@ static int igmp_marksources(struct ip_mc_list *pmc, int nsrcs, __u32 *srcs) return 1; } -static void igmp_heard_report(struct in_device *in_dev, u32 group) +static void igmp_heard_report(struct in_device *in_dev, __be32 group) { struct ip_mc_list *im; @@ -825,10 +825,10 @@ static void igmp_heard_report(struct in_device *in_dev, u32 group) static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, int len) { - struct igmphdr *ih = skb->h.igmph; - struct igmpv3_query *ih3 = (struct igmpv3_query *)ih; + struct igmphdr *ih = igmp_hdr(skb); + struct igmpv3_query *ih3 = igmpv3_query_hdr(skb); struct ip_mc_list *im; - u32 group = ih->group; + __be32 group = ih->group; int max_delay; int mark = 0; @@ -836,7 +836,7 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, if (len == 8) { if (ih->code == 0) { /* Alas, old v1 router presents here. */ - + max_delay = IGMP_Query_Response_Interval; in_dev->mr_v1_seen = jiffies + IGMP_V1_Router_Present_Timeout; @@ -858,13 +858,13 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, } else { /* v3 */ if (!pskb_may_pull(skb, sizeof(struct igmpv3_query))) return; - - ih3 = (struct igmpv3_query *) skb->h.raw; + + ih3 = igmpv3_query_hdr(skb); if (ih3->nsrcs) { - if (!pskb_may_pull(skb, sizeof(struct igmpv3_query) - + ntohs(ih3->nsrcs)*sizeof(__u32))) + if (!pskb_may_pull(skb, sizeof(struct igmpv3_query) + + ntohs(ih3->nsrcs)*sizeof(__be32))) return; - ih3 = (struct igmpv3_query *) skb->h.raw; + ih3 = igmpv3_query_hdr(skb); } max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE); @@ -907,7 +907,7 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, else im->gsquery = mark; changed = !im->gsquery || - igmp_marksources(im, ntohs(ih3->nsrcs), ih3->srcs); + igmp_marksources(im, ntohs(ih3->nsrcs), ih3->srcs); spin_unlock_bh(&im->lock); if (changed) igmp_mod_timer(im, max_delay); @@ -922,26 +922,24 @@ int igmp_rcv(struct sk_buff *skb) struct in_device *in_dev = in_dev_get(skb->dev); int len = skb->len; - if (in_dev==NULL) { - kfree_skb(skb); - return 0; - } + if (in_dev == NULL) + goto drop; if (!pskb_may_pull(skb, sizeof(struct igmphdr))) - goto drop; + goto drop_ref; switch (skb->ip_summed) { case CHECKSUM_COMPLETE: - if (!(u16)csum_fold(skb->csum)) + if (!csum_fold(skb->csum)) break; /* fall through */ case CHECKSUM_NONE: skb->csum = 0; if (__skb_checksum_complete(skb)) - goto drop; + goto drop_ref; } - ih = skb->h.igmph; + ih = igmp_hdr(skb); switch (ih->type) { case IGMP_HOST_MEMBERSHIP_QUERY: igmp_heard_query(in_dev, skb, len); @@ -950,7 +948,7 @@ int igmp_rcv(struct sk_buff *skb) case IGMPV2_HOST_MEMBERSHIP_REPORT: case IGMPV3_HOST_MEMBERSHIP_REPORT: /* Is it our report looped back? */ - if (((struct rtable*)skb->dst)->fl.iif == 0) + if (skb_rtable(skb)->fl.iif == 0) break; /* don't rely on MC router hearing unicast reports */ if (skb->pkt_type == PACKET_MULTICAST || @@ -972,8 +970,9 @@ int igmp_rcv(struct sk_buff *skb) break; } -drop: +drop_ref: in_dev_put(in_dev); +drop: kfree_skb(skb); return 0; } @@ -985,7 +984,7 @@ drop: * Add a filter to a device */ -static void ip_mc_filter_add(struct in_device *in_dev, u32 addr) +static void ip_mc_filter_add(struct in_device *in_dev, __be32 addr) { char buf[MAX_ADDR_LEN]; struct net_device *dev = in_dev->dev; @@ -998,20 +997,20 @@ static void ip_mc_filter_add(struct in_device *in_dev, u32 addr) --ANK */ if (arp_mc_map(addr, buf, dev, 0) == 0) - dev_mc_add(dev,buf,dev->addr_len,0); + dev_mc_add(dev, buf, dev->addr_len, 0); } /* * Remove a filter from a device */ -static void ip_mc_filter_del(struct in_device *in_dev, u32 addr) +static void ip_mc_filter_del(struct in_device *in_dev, __be32 addr) { 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); + dev_mc_delete(dev, buf, dev->addr_len, 0); } #ifdef CONFIG_IP_MULTICAST @@ -1055,7 +1054,7 @@ static void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im) spin_unlock_bh(&in_dev->mc_tomb_lock); } -static void igmpv3_del_delrec(struct in_device *in_dev, __u32 multiaddr) +static void igmpv3_del_delrec(struct in_device *in_dev, __be32 multiaddr) { struct ip_mc_list *pmc, *pmc_prev; struct ip_sf_list *psf, *psf_next; @@ -1193,7 +1192,7 @@ static void igmp_group_added(struct ip_mc_list *im) * A socket has joined a multicast group on device dev. */ -void ip_mc_inc_group(struct in_device *in_dev, u32 addr) +void ip_mc_inc_group(struct in_device *in_dev, __be32 addr) { struct ip_mc_list *im; @@ -1211,10 +1210,10 @@ void ip_mc_inc_group(struct in_device *in_dev, u32 addr) if (!im) goto out; - im->users=1; - im->interface=in_dev; + im->users = 1; + im->interface = in_dev; in_dev_hold(in_dev); - im->multiaddr=addr; + im->multiaddr = addr; /* initial mode is (EX, empty) */ im->sfmode = MCAST_EXCLUDE; im->sfcount[MCAST_INCLUDE] = 0; @@ -1225,18 +1224,17 @@ void ip_mc_inc_group(struct in_device *in_dev, u32 addr) atomic_set(&im->refcnt, 1); spin_lock_init(&im->lock); #ifdef CONFIG_IP_MULTICAST - im->tm_running=0; - init_timer(&im->timer); - im->timer.data=(unsigned long)im; - im->timer.function=&igmp_timer_expire; + im->tm_running = 0; + setup_timer(&im->timer, &igmp_timer_expire, (unsigned long)im); 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; + im->next = in_dev->mc_list; + in_dev->mc_list = im; + in_dev->mc_count++; write_unlock_bh(&in_dev->mc_list_lock); #ifdef CONFIG_IP_MULTICAST igmpv3_del_delrec(in_dev, im->multiaddr); @@ -1249,20 +1247,43 @@ out: } /* + * Resend IGMP JOIN report; used for bonding. + */ +void ip_mc_rejoin_group(struct ip_mc_list *im) +{ +#ifdef CONFIG_IP_MULTICAST + struct in_device *in_dev = im->interface; + + 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 +} + +/* * A socket has left a multicast group on device dev */ -void ip_mc_dec_group(struct in_device *in_dev, u32 addr) +void ip_mc_dec_group(struct in_device *in_dev, __be32 addr) { struct ip_mc_list *i, **ip; - + ASSERT_RTNL(); - + for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) { - if (i->multiaddr==addr) { + if (i->multiaddr == addr) { if (--i->users == 0) { write_lock_bh(&in_dev->mc_list_lock); *ip = i->next; + in_dev->mc_count--; write_unlock_bh(&in_dev->mc_list_lock); igmp_group_dropped(i); @@ -1277,6 +1298,28 @@ void ip_mc_dec_group(struct in_device *in_dev, u32 addr) } } +/* Device changing type */ + +void ip_mc_unmap(struct in_device *in_dev) +{ + struct ip_mc_list *i; + + ASSERT_RTNL(); + + for (i = in_dev->mc_list; i; i = i->next) + igmp_group_dropped(i); +} + +void ip_mc_remap(struct in_device *in_dev) +{ + struct ip_mc_list *i; + + ASSERT_RTNL(); + + for (i = in_dev->mc_list; i; i = i->next) + igmp_group_added(i); +} + /* Device going down */ void ip_mc_down(struct in_device *in_dev) @@ -1308,13 +1351,12 @@ void ip_mc_init_dev(struct in_device *in_dev) in_dev->mc_tomb = NULL; #ifdef CONFIG_IP_MULTICAST in_dev->mr_gq_running = 0; - init_timer(&in_dev->mr_gq_timer); - in_dev->mr_gq_timer.data=(unsigned long) in_dev; - in_dev->mr_gq_timer.function=&igmp_gq_timer_expire; + setup_timer(&in_dev->mr_gq_timer, igmp_gq_timer_expire, + (unsigned long)in_dev); in_dev->mr_ifc_count = 0; - init_timer(&in_dev->mr_ifc_timer); - in_dev->mr_ifc_timer.data=(unsigned long) in_dev; - in_dev->mr_ifc_timer.function=&igmp_ifc_timer_expire; + in_dev->mc_count = 0; + setup_timer(&in_dev->mr_ifc_timer, igmp_ifc_timer_expire, + (unsigned long)in_dev); in_dev->mr_qrv = IGMP_Unsolicited_Report_Count; #endif @@ -1352,8 +1394,8 @@ void ip_mc_destroy_dev(struct in_device *in_dev) write_lock_bh(&in_dev->mc_list_lock); while ((i = in_dev->mc_list) != NULL) { in_dev->mc_list = i->next; + in_dev->mc_count--; write_unlock_bh(&in_dev->mc_list_lock); - igmp_group_dropped(i); ip_ma_put(i); @@ -1362,7 +1404,7 @@ void ip_mc_destroy_dev(struct in_device *in_dev) write_unlock_bh(&in_dev->mc_list_lock); } -static struct in_device * ip_mc_find_dev(struct ip_mreqn *imr) +static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) { struct flowi fl = { .nl_u = { .ip4_u = { .daddr = imr->imr_multiaddr.s_addr } } }; @@ -1371,19 +1413,19 @@ static struct in_device * ip_mc_find_dev(struct ip_mreqn *imr) struct in_device *idev = NULL; if (imr->imr_ifindex) { - idev = inetdev_by_index(imr->imr_ifindex); + idev = inetdev_by_index(net, imr->imr_ifindex); if (idev) __in_dev_put(idev); return idev; } if (imr->imr_address.s_addr) { - dev = ip_dev_find(imr->imr_address.s_addr); + dev = ip_dev_find(net, imr->imr_address.s_addr); if (!dev) return NULL; dev_put(dev); } - if (!dev && !ip_route_output_key(&rt, &fl)) { + if (!dev && !ip_route_output_key(net, &rt, &fl)) { dev = rt->u.dst.dev; ip_rt_put(rt); } @@ -1402,7 +1444,7 @@ int sysctl_igmp_max_msf __read_mostly = IP_MAX_MSF; static int ip_mc_del1_src(struct ip_mc_list *pmc, int sfmode, - __u32 *psfsrc) + __be32 *psfsrc) { struct ip_sf_list *psf, *psf_prev; int rv = 0; @@ -1434,7 +1476,7 @@ static int ip_mc_del1_src(struct ip_mc_list *pmc, int sfmode, #ifdef CONFIG_IP_MULTICAST if (psf->sf_oldin && !IGMP_V1_SEEN(in_dev) && !IGMP_V2_SEEN(in_dev)) { - psf->sf_crcount = in_dev->mr_qrv ? in_dev->mr_qrv : + psf->sf_crcount = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; psf->sf_next = pmc->tomb; pmc->tomb = psf; @@ -1450,8 +1492,8 @@ static int ip_mc_del1_src(struct ip_mc_list *pmc, int sfmode, #define igmp_ifc_event(x) do { } while (0) #endif -static int ip_mc_del_src(struct in_device *in_dev, __u32 *pmca, int sfmode, - int sfcount, __u32 *psfsrc, int delta) +static int ip_mc_del_src(struct in_device *in_dev, __be32 *pmca, int sfmode, + int sfcount, __be32 *psfsrc, int delta) { struct ip_mc_list *pmc; int changerec = 0; @@ -1498,7 +1540,7 @@ static int ip_mc_del_src(struct in_device *in_dev, __u32 *pmca, int sfmode, /* filter mode change */ pmc->sfmode = MCAST_INCLUDE; #ifdef CONFIG_IP_MULTICAST - pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : + pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; in_dev->mr_ifc_count = pmc->crcount; for (psf=pmc->sources; psf; psf = psf->sf_next) @@ -1517,7 +1559,7 @@ out_unlock: * Add multicast single-source filter to the interface list */ static int ip_mc_add1_src(struct ip_mc_list *pmc, int sfmode, - __u32 *psfsrc, int delta) + __be32 *psfsrc, int delta) { struct ip_sf_list *psf, *psf_prev; @@ -1623,8 +1665,8 @@ static int sf_setstate(struct ip_mc_list *pmc) /* * Add multicast source filter list to the interface list */ -static int ip_mc_add_src(struct in_device *in_dev, __u32 *pmca, int sfmode, - int sfcount, __u32 *psfsrc, int delta) +static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode, + int sfcount, __be32 *psfsrc, int delta) { struct ip_mc_list *pmc; int isexclude; @@ -1665,8 +1707,8 @@ static int ip_mc_add_src(struct in_device *in_dev, __u32 *pmca, int sfmode, (void) ip_mc_del1_src(pmc, sfmode, &psfsrc[i]); } else if (isexclude != (pmc->sfcount[MCAST_EXCLUDE] != 0)) { #ifdef CONFIG_IP_MULTICAST - struct in_device *in_dev = pmc->interface; struct ip_sf_list *psf; + in_dev = pmc->interface; #endif /* filter mode change */ @@ -1677,7 +1719,7 @@ static int ip_mc_add_src(struct in_device *in_dev, __u32 *pmca, int sfmode, #ifdef CONFIG_IP_MULTICAST /* else no filters; keep old mode for reports */ - pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : + pmc->crcount = in_dev->mr_qrv ? in_dev->mr_qrv : IGMP_Unsolicited_Report_Count; in_dev->mr_ifc_count = pmc->crcount; for (psf=pmc->sources; psf; psf = psf->sf_next) @@ -1717,19 +1759,20 @@ static void ip_mc_clear_src(struct ip_mc_list *pmc) int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr) { int err; - u32 addr = imr->imr_multiaddr.s_addr; - struct ip_mc_socklist *iml=NULL, *i; + __be32 addr = imr->imr_multiaddr.s_addr; + struct ip_mc_socklist *iml = NULL, *i; struct in_device *in_dev; struct inet_sock *inet = inet_sk(sk); + struct net *net = sock_net(sk); int ifindex; int count = 0; - if (!MULTICAST(addr)) + if (!ipv4_is_multicast(addr)) return -EINVAL; rtnl_lock(); - in_dev = ip_mc_find_dev(imr); + in_dev = ip_mc_find_dev(net, imr); if (!in_dev) { iml = NULL; @@ -1748,7 +1791,7 @@ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr) err = -ENOBUFS; if (count >= sysctl_igmp_max_memberships) goto done; - iml = sock_kmalloc(sk,sizeof(*iml),GFP_KERNEL); + iml = sock_kmalloc(sk, sizeof(*iml), GFP_KERNEL); if (iml == NULL) goto done; @@ -1769,7 +1812,7 @@ static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml, { int err; - if (iml->sflist == 0) { + if (iml->sflist == NULL) { /* any-source empty exclude case */ return ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr, iml->sfmode, 0, NULL, 0); @@ -1791,12 +1834,13 @@ 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; struct in_device *in_dev; - u32 group = imr->imr_multiaddr.s_addr; + struct net *net = sock_net(sk); + __be32 group = imr->imr_multiaddr.s_addr; u32 ifindex; int ret = -EADDRNOTAVAIL; rtnl_lock(); - in_dev = ip_mc_find_dev(imr); + in_dev = ip_mc_find_dev(net, imr); ifindex = imr->imr_ifindex; for (imlp = &inet->mc_list; (iml = *imlp) != NULL; imlp = &iml->next) { if (iml->multi.imr_multiaddr.s_addr != group) @@ -1829,15 +1873,16 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct { int err; struct ip_mreqn imr; - u32 addr = mreqs->imr_multiaddr; + __be32 addr = mreqs->imr_multiaddr; struct ip_mc_socklist *pmc; struct in_device *in_dev = NULL; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *psl; + struct net *net = sock_net(sk); int leavegroup = 0; int i, j, rv; - if (!MULTICAST(addr)) + if (!ipv4_is_multicast(addr)) return -EINVAL; rtnl_lock(); @@ -1845,7 +1890,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct 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); + in_dev = ip_mc_find_dev(net, &imr); if (!in_dev) { err = -ENODEV; @@ -1871,7 +1916,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct } 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); - ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, pmc->sfmode, 0, + ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, pmc->sfmode, 0, NULL, 0); pmc->sfmode = omode; } @@ -1883,7 +1928,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct rv = !0; for (i=0; isl_count; i++) { rv = memcmp(&psl->sl_addr[i], &mreqs->imr_sourceaddr, - sizeof(__u32)); + sizeof(__be32)); if (rv == 0) break; } @@ -1897,7 +1942,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct } /* update the interface filter */ - ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, omode, 1, + ip_mc_del_src(in_dev, &mreqs->imr_multiaddr, omode, 1, &mreqs->imr_sourceaddr, 1); for (j=i+1; jsl_count; j++) @@ -1935,7 +1980,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct rv = 1; /* > 0 for insert logic below if sl_count is 0 */ for (i=0; isl_count; i++) { rv = memcmp(&psl->sl_addr[i], &mreqs->imr_sourceaddr, - sizeof(__u32)); + sizeof(__be32)); if (rv == 0) break; } @@ -1947,7 +1992,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct psl->sl_count++; err = 0; /* update the interface list */ - ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 1, + ip_mc_add_src(in_dev, &mreqs->imr_multiaddr, omode, 1, &mreqs->imr_sourceaddr, 1); done: rtnl_unlock(); @@ -1960,14 +2005,15 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex) { int err = 0; struct ip_mreqn imr; - u32 addr = msf->imsf_multiaddr; + __be32 addr = msf->imsf_multiaddr; struct ip_mc_socklist *pmc; struct in_device *in_dev; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *newpsl, *psl; + struct net *net = sock_net(sk); int leavegroup = 0; - if (!MULTICAST(addr)) + if (!ipv4_is_multicast(addr)) return -EINVAL; if (msf->imsf_fmode != MCAST_INCLUDE && msf->imsf_fmode != MCAST_EXCLUDE) @@ -1978,7 +2024,7 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex) 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); + in_dev = ip_mc_find_dev(net, &imr); if (!in_dev) { err = -ENODEV; @@ -2044,13 +2090,14 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf, { int err, len, count, copycount; struct ip_mreqn imr; - u32 addr = msf->imsf_multiaddr; + __be32 addr = msf->imsf_multiaddr; struct ip_mc_socklist *pmc; struct in_device *in_dev; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *psl; + struct net *net = sock_net(sk); - if (!MULTICAST(addr)) + if (!ipv4_is_multicast(addr)) return -EINVAL; rtnl_lock(); @@ -2058,7 +2105,7 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf, 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); + in_dev = ip_mc_find_dev(net, &imr); if (!in_dev) { err = -ENODEV; @@ -2103,7 +2150,7 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf, { int err, i, count, copycount; struct sockaddr_in *psin; - u32 addr; + __be32 addr; struct ip_mc_socklist *pmc; struct inet_sock *inet = inet_sk(sk); struct ip_sf_socklist *psl; @@ -2112,7 +2159,7 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf, if (psin->sin_family != AF_INET) return -EINVAL; addr = psin->sin_addr.s_addr; - if (!MULTICAST(addr)) + if (!ipv4_is_multicast(addr)) return -EINVAL; rtnl_lock(); @@ -2137,7 +2184,6 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf, return -EFAULT; } for (i=0; i */ -int ip_mc_sf_allow(struct sock *sk, u32 loc_addr, u32 rmt_addr, int dif) +int ip_mc_sf_allow(struct sock *sk, __be32 loc_addr, __be32 rmt_addr, int dif) { struct inet_sock *inet = inet_sk(sk); struct ip_mc_socklist *pmc; struct ip_sf_socklist *psl; int i; - if (!MULTICAST(loc_addr)) + if (!ipv4_is_multicast(loc_addr)) return 1; for (pmc=inet->mc_list; pmc; pmc=pmc->next) { @@ -2172,7 +2218,7 @@ int ip_mc_sf_allow(struct sock *sk, u32 loc_addr, u32 rmt_addr, int dif) break; } if (!pmc) - return 1; + return inet->mc_all; psl = pmc->sflist; if (!psl) return pmc->sfmode == MCAST_EXCLUDE; @@ -2196,6 +2242,7 @@ void ip_mc_drop_socket(struct sock *sk) { struct inet_sock *inet = inet_sk(sk); struct ip_mc_socklist *iml; + struct net *net = sock_net(sk); if (inet->mc_list == NULL) return; @@ -2205,7 +2252,7 @@ void ip_mc_drop_socket(struct sock *sk) struct in_device *in_dev; inet->mc_list = iml->next; - in_dev = inetdev_by_index(iml->multi.imr_ifindex); + in_dev = inetdev_by_index(net, iml->multi.imr_ifindex); (void) ip_mc_leave_src(sk, iml, in_dev); if (in_dev != NULL) { ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr); @@ -2216,7 +2263,7 @@ void ip_mc_drop_socket(struct sock *sk) rtnl_unlock(); } -int ip_check_mc(struct in_device *in_dev, u32 mc_addr, u32 src_addr, u16 proto) +int ip_check_mc(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 proto) { struct ip_mc_list *im; struct ip_sf_list *psf; @@ -2250,6 +2297,7 @@ int ip_check_mc(struct in_device *in_dev, u32 mc_addr, u32 src_addr, u16 proto) #if defined(CONFIG_PROC_FS) struct igmp_mc_iter_state { + struct seq_net_private p; struct net_device *dev; struct in_device *in_dev; }; @@ -2258,14 +2306,15 @@ struct igmp_mc_iter_state { static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ip_mc_list *im = NULL; struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); - for (state->dev = dev_base, state->in_dev = NULL; - state->dev; - state->dev = state->dev->next) { + state->in_dev = NULL; + for_each_netdev_rcu(net, state->dev) { struct in_device *in_dev; - in_dev = in_dev_get(state->dev); + + in_dev = __in_dev_get_rcu(state->dev); if (!in_dev) continue; read_lock(&in_dev->mc_list_lock); @@ -2275,7 +2324,6 @@ static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq) break; } read_unlock(&in_dev->mc_list_lock); - in_dev_put(in_dev); } return im; } @@ -2285,16 +2333,15 @@ static struct ip_mc_list *igmp_mc_get_next(struct seq_file *seq, struct ip_mc_li struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq); im = im->next; while (!im) { - if (likely(state->in_dev != NULL)) { + if (likely(state->in_dev != NULL)) read_unlock(&state->in_dev->mc_list_lock); - in_dev_put(state->in_dev); - } - state->dev = state->dev->next; + + state->dev = next_net_device_rcu(state->dev); if (!state->dev) { state->in_dev = NULL; break; } - state->in_dev = in_dev_get(state->dev); + state->in_dev = __in_dev_get_rcu(state->dev); if (!state->in_dev) continue; read_lock(&state->in_dev->mc_list_lock); @@ -2313,8 +2360,9 @@ static struct ip_mc_list *igmp_mc_get_idx(struct seq_file *seq, loff_t pos) } static void *igmp_mc_seq_start(struct seq_file *seq, loff_t *pos) + __acquires(rcu) { - read_lock(&dev_base_lock); + rcu_read_lock(); return *pos ? igmp_mc_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } @@ -2330,21 +2378,21 @@ static void *igmp_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos) } static void igmp_mc_seq_stop(struct seq_file *seq, void *v) + __releases(rcu) { 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); + rcu_read_unlock(); } static int igmp_mc_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) - seq_puts(seq, + seq_puts(seq, "Idx\tDevice : Count Querier\tGroup Users Timer\tReporter\n"); else { struct ip_mc_list *im = (struct ip_mc_list *)v; @@ -2360,7 +2408,7 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v) if (state->in_dev->mc_list == im) { seq_printf(seq, "%d\t%-10s: %5d %7s\n", - state->dev->ifindex, state->dev->name, state->dev->mc_count, querier); + state->dev->ifindex, state->dev->name, state->in_dev->mc_count, querier); } seq_printf(seq, @@ -2373,7 +2421,7 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v) return 0; } -static struct seq_operations igmp_mc_seq_ops = { +static const struct seq_operations igmp_mc_seq_ops = { .start = igmp_mc_seq_start, .next = igmp_mc_seq_next, .stop = igmp_mc_seq_stop, @@ -2382,34 +2430,20 @@ static struct seq_operations igmp_mc_seq_ops = { static int igmp_mc_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct igmp_mc_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - rc = seq_open(file, &igmp_mc_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_net(inode, file, &igmp_mc_seq_ops, + sizeof(struct igmp_mc_iter_state)); } -static struct file_operations igmp_mc_seq_fops = { +static const struct file_operations igmp_mc_seq_fops = { .owner = THIS_MODULE, .open = igmp_mc_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; struct igmp_mcf_iter_state { + struct seq_net_private p; struct net_device *dev; struct in_device *idev; struct ip_mc_list *im; @@ -2419,15 +2453,16 @@ struct igmp_mcf_iter_state { static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq) { + struct net *net = seq_file_net(seq); struct ip_sf_list *psf = NULL; struct ip_mc_list *im = NULL; struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); - for (state->dev = dev_base, state->idev = NULL, state->im = NULL; - state->dev; - state->dev = state->dev->next) { + state->idev = NULL; + state->im = NULL; + for_each_netdev_rcu(net, state->dev) { struct in_device *idev; - idev = in_dev_get(state->dev); + idev = __in_dev_get_rcu(state->dev); if (unlikely(idev == NULL)) continue; read_lock(&idev->mc_list_lock); @@ -2443,7 +2478,6 @@ static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq) spin_unlock_bh(&im->lock); } read_unlock(&idev->mc_list_lock); - in_dev_put(idev); } return psf; } @@ -2457,16 +2491,15 @@ static struct ip_sf_list *igmp_mcf_get_next(struct seq_file *seq, struct ip_sf_l spin_unlock_bh(&state->im->lock); state->im = state->im->next; while (!state->im) { - if (likely(state->idev != NULL)) { + if (likely(state->idev != NULL)) read_unlock(&state->idev->mc_list_lock); - in_dev_put(state->idev); - } - state->dev = state->dev->next; + + state->dev = next_net_device_rcu(state->dev); if (!state->dev) { state->idev = NULL; goto out; } - state->idev = in_dev_get(state->dev); + state->idev = __in_dev_get_rcu(state->dev); if (!state->idev) continue; read_lock(&state->idev->mc_list_lock); @@ -2491,8 +2524,9 @@ static struct ip_sf_list *igmp_mcf_get_idx(struct seq_file *seq, loff_t pos) } static void *igmp_mcf_seq_start(struct seq_file *seq, loff_t *pos) + __acquires(rcu) { - read_lock(&dev_base_lock); + rcu_read_lock(); return *pos ? igmp_mcf_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } @@ -2508,6 +2542,7 @@ static void *igmp_mcf_seq_next(struct seq_file *seq, void *v, loff_t *pos) } static void igmp_mcf_seq_stop(struct seq_file *seq, void *v) + __releases(rcu) { struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); if (likely(state->im != NULL)) { @@ -2516,11 +2551,10 @@ static void igmp_mcf_seq_stop(struct seq_file *seq, void *v) } 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); + rcu_read_unlock(); } static int igmp_mcf_seq_show(struct seq_file *seq, void *v) @@ -2529,7 +2563,7 @@ static int igmp_mcf_seq_show(struct seq_file *seq, void *v) struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); if (v == SEQ_START_TOKEN) { - seq_printf(seq, + seq_printf(seq, "%3s %6s " "%10s %10s %6s %6s\n", "Idx", "Device", "MCA", @@ -2537,8 +2571,8 @@ static int igmp_mcf_seq_show(struct seq_file *seq, void *v) } else { seq_printf(seq, "%3d %6.6s 0x%08x " - "0x%08x %6lu %6lu\n", - state->dev->ifindex, state->dev->name, + "0x%08x %6lu %6lu\n", + state->dev->ifindex, state->dev->name, ntohl(state->im->multiaddr), ntohl(psf->sf_inaddr), psf->sf_count[MCAST_INCLUDE], @@ -2547,7 +2581,7 @@ static int igmp_mcf_seq_show(struct seq_file *seq, void *v) return 0; } -static struct seq_operations igmp_mcf_seq_ops = { +static const struct seq_operations igmp_mcf_seq_ops = { .start = igmp_mcf_seq_start, .next = igmp_mcf_seq_next, .stop = igmp_mcf_seq_stop, @@ -2556,41 +2590,54 @@ static struct seq_operations igmp_mcf_seq_ops = { static int igmp_mcf_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct igmp_mcf_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - - if (!s) - goto out; - rc = seq_open(file, &igmp_mcf_seq_ops); - if (rc) - goto out_kfree; - - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return seq_open_net(inode, file, &igmp_mcf_seq_ops, + sizeof(struct igmp_mcf_iter_state)); } -static struct file_operations igmp_mcf_seq_fops = { +static const struct file_operations igmp_mcf_seq_fops = { .owner = THIS_MODULE, .open = igmp_mcf_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; -int __init igmp_mc_proc_init(void) +static int igmp_net_init(struct net *net) { - proc_net_fops_create("igmp", S_IRUGO, &igmp_mc_seq_fops); - proc_net_fops_create("mcfilter", S_IRUGO, &igmp_mcf_seq_fops); + struct proc_dir_entry *pde; + + pde = proc_net_fops_create(net, "igmp", S_IRUGO, &igmp_mc_seq_fops); + if (!pde) + goto out_igmp; + pde = proc_net_fops_create(net, "mcfilter", S_IRUGO, &igmp_mcf_seq_fops); + if (!pde) + goto out_mcfilter; return 0; + +out_mcfilter: + proc_net_remove(net, "igmp"); +out_igmp: + return -ENOMEM; +} + +static void igmp_net_exit(struct net *net) +{ + proc_net_remove(net, "mcfilter"); + proc_net_remove(net, "igmp"); +} + +static struct pernet_operations igmp_net_ops = { + .init = igmp_net_init, + .exit = igmp_net_exit, +}; + +int __init igmp_mc_proc_init(void) +{ + return register_pernet_subsys(&igmp_net_ops); } #endif EXPORT_SYMBOL(ip_mc_dec_group); EXPORT_SYMBOL(ip_mc_inc_group); EXPORT_SYMBOL(ip_mc_join_group); +EXPORT_SYMBOL(ip_mc_rejoin_group);