/*
* Multicast support for IPv6
- * Linux INET6 implementation
+ * Linux INET6 implementation
*
* Authors:
- * Pedro Roque <roque@di.fc.ul.pt>
+ * Pedro Roque <roque@di.fc.ul.pt>
*
- * $Id: mcast.c,v 1.40 2002/02/08 03:57:19 davem Exp $
- *
- * Based on linux/ipv4/igmp.c and linux/ipv4/ip_sockglue.c
+ * Based on linux/ipv4/igmp.c and linux/ipv4/ip_sockglue.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* - MLDv2 support
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
+#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/snmp.h>
#include <net/ndisc.h>
#include <net/addrconf.h>
#include <net/ip6_route.h>
+#include <net/inet_common.h>
#include <net/ip6_checksum.h>
struct mld2_grec {
__u8 grec_type;
__u8 grec_auxwords;
- __u16 grec_nsrcs;
+ __be16 grec_nsrcs;
struct in6_addr grec_mca;
struct in6_addr grec_src[0];
};
struct mld2_report {
__u8 type;
__u8 resv1;
- __u16 csum;
- __u16 resv2;
- __u16 ngrec;
+ __sum16 csum;
+ __be16 resv2;
+ __be16 ngrec;
struct mld2_grec grec[0];
};
struct mld2_query {
__u8 type;
__u8 code;
- __u16 csum;
- __u16 mrc;
- __u16 resv1;
+ __sum16 csum;
+ __be16 mrc;
+ __be16 resv1;
struct in6_addr mca;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 qrv:3,
#error "Please fix <asm/byteorder.h>"
#endif
__u8 qqic;
- __u16 nsrcs;
+ __be16 nsrcs;
struct in6_addr srcs[0];
};
/* Big mc list lock for all the sockets */
static DEFINE_RWLOCK(ipv6_sk_mc_lock);
-static struct socket *igmp6_socket;
-
-int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
-
static void igmp6_join_group(struct ifmcaddr6 *ma);
static void igmp6_leave_group(struct ifmcaddr6 *ma);
static void igmp6_timer_handler(unsigned long data);
#define IGMP6_UNSOLICITED_IVAL (10*HZ)
#define MLD_QRV_DEFAULT 2
-#define MLD_V1_SEEN(idev) (ipv6_devconf.force_mld_version == 1 || \
+#define MLD_V1_SEEN(idev) (dev_net((idev)->dev)->ipv6.devconf_all->force_mld_version == 1 || \
(idev)->cnf.force_mld_version == 1 || \
((idev)->mc_v1_seen && \
time_before(jiffies, (idev)->mc_v1_seen)))
((MLDV2_MASK(value, nbmant) | (1<<(nbmant))) << \
(MLDV2_MASK((value) >> (nbmant), nbexp) + (nbexp))))
-#define MLDV2_QQIC(value) MLDV2_EXP(0x80, 4, 3, value)
#define MLDV2_MRC(value) MLDV2_EXP(0x8000, 12, 3, value)
-#define IPV6_MLD_MAX_MSF 10
+#define IPV6_MLD_MAX_MSF 64
-int sysctl_mld_max_msf = IPV6_MLD_MAX_MSF;
+int sysctl_mld_max_msf __read_mostly = IPV6_MLD_MAX_MSF;
/*
* socket join on multicast group
*/
-int ipv6_sock_mc_join(struct sock *sk, int ifindex, struct in6_addr *addr)
+int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
{
struct net_device *dev = NULL;
struct ipv6_mc_socklist *mc_lst;
struct ipv6_pinfo *np = inet6_sk(sk);
+ struct net *net = sock_net(sk);
int err;
if (!ipv6_addr_is_multicast(addr))
if (ifindex == 0) {
struct rt6_info *rt;
- rt = rt6_lookup(addr, NULL, 0, 0);
+ rt = rt6_lookup(net, addr, NULL, 0, 0);
if (rt) {
dev = rt->rt6i_dev;
dev_hold(dev);
dst_release(&rt->u.dst);
}
} else
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(net, ifindex);
if (dev == NULL) {
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
mc_lst->ifindex = dev->ifindex;
mc_lst->sfmode = MCAST_EXCLUDE;
+ rwlock_init(&mc_lst->sflock);
mc_lst->sflist = NULL;
/*
/*
* socket leave on multicast group
*/
-int ipv6_sock_mc_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
+int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct ipv6_mc_socklist *mc_lst, **lnk;
+ struct net *net = sock_net(sk);
write_lock_bh(&ipv6_sk_mc_lock);
for (lnk = &np->ipv6_mc_list; (mc_lst = *lnk) !=NULL ; lnk = &mc_lst->next) {
*lnk = mc_lst->next;
write_unlock_bh(&ipv6_sk_mc_lock);
- if ((dev = dev_get_by_index(mc_lst->ifindex)) != NULL) {
+ dev = dev_get_by_index(net, mc_lst->ifindex);
+ if (dev != NULL) {
struct inet6_dev *idev = in6_dev_get(dev);
+ (void) ip6_mc_leave_src(sk, mc_lst, idev);
if (idev) {
- (void) ip6_mc_leave_src(sk,mc_lst,idev);
__ipv6_dev_mc_dec(idev, &mc_lst->addr);
in6_dev_put(idev);
}
dev_put(dev);
- }
+ } else
+ (void) ip6_mc_leave_src(sk, mc_lst, NULL);
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
return 0;
}
return -EADDRNOTAVAIL;
}
-static struct inet6_dev *ip6_mc_find_dev(struct in6_addr *group, int ifindex)
+static struct inet6_dev *ip6_mc_find_dev(struct net *net,
+ struct in6_addr *group,
+ int ifindex)
{
struct net_device *dev = NULL;
struct inet6_dev *idev = NULL;
if (ifindex == 0) {
struct rt6_info *rt;
- rt = rt6_lookup(group, NULL, 0, 0);
+ rt = rt6_lookup(net, group, NULL, 0, 0);
if (rt) {
dev = rt->rt6i_dev;
dev_hold(dev);
dst_release(&rt->u.dst);
}
} else
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(net, ifindex);
if (!dev)
- return NULL;
+ goto nodev;
idev = in6_dev_get(dev);
- if (!idev) {
- dev_put(dev);
- return NULL;
- }
+ if (!idev)
+ goto release;
read_lock_bh(&idev->lock);
- if (idev->dead) {
- read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
- dev_put(dev);
- return NULL;
- }
+ if (idev->dead)
+ goto unlock_release;
+
return idev;
+
+unlock_release:
+ read_unlock_bh(&idev->lock);
+ in6_dev_put(idev);
+release:
+ dev_put(dev);
+nodev:
+ return NULL;
}
void ipv6_sock_mc_close(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct ipv6_mc_socklist *mc_lst;
+ struct net *net = sock_net(sk);
write_lock_bh(&ipv6_sk_mc_lock);
while ((mc_lst = np->ipv6_mc_list) != NULL) {
np->ipv6_mc_list = mc_lst->next;
write_unlock_bh(&ipv6_sk_mc_lock);
- dev = dev_get_by_index(mc_lst->ifindex);
+ dev = dev_get_by_index(net, mc_lst->ifindex);
if (dev) {
struct inet6_dev *idev = in6_dev_get(dev);
+ (void) ip6_mc_leave_src(sk, mc_lst, idev);
if (idev) {
- (void) ip6_mc_leave_src(sk, mc_lst, idev);
__ipv6_dev_mc_dec(idev, &mc_lst->addr);
in6_dev_put(idev);
}
dev_put(dev);
- }
+ } else
+ (void) ip6_mc_leave_src(sk, mc_lst, NULL);
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
struct inet6_dev *idev;
struct ipv6_pinfo *inet6 = inet6_sk(sk);
struct ip6_sf_socklist *psl;
+ struct net *net = sock_net(sk);
int i, j, rv;
int leavegroup = 0;
+ int pmclocked = 0;
int err;
- if (pgsr->gsr_group.ss_family != AF_INET6 ||
- pgsr->gsr_source.ss_family != AF_INET6)
- return -EINVAL;
-
source = &((struct sockaddr_in6 *)&pgsr->gsr_source)->sin6_addr;
group = &((struct sockaddr_in6 *)&pgsr->gsr_group)->sin6_addr;
if (!ipv6_addr_is_multicast(group))
return -EINVAL;
- idev = ip6_mc_find_dev(group, pgsr->gsr_interface);
+ idev = ip6_mc_find_dev(net, group, pgsr->gsr_interface);
if (!idev)
return -ENODEV;
dev = idev->dev;
pmc->sfmode = omode;
}
+ write_lock_bh(&pmc->sflock);
+ pmclocked = 1;
+
psl = pmc->sflist;
if (!add) {
if (!psl)
if (psl)
count += psl->sl_max;
- newpsl = (struct ip6_sf_socklist *)sock_kmalloc(sk,
- IP6_SFLSIZE(count), GFP_ATOMIC);
+ newpsl = sock_kmalloc(sk, IP6_SFLSIZE(count), GFP_ATOMIC);
if (!newpsl) {
err = -ENOBUFS;
goto done;
/* update the interface list */
ip6_mc_add_src(idev, group, omode, 1, source, 1);
done:
+ if (pmclocked)
+ write_unlock_bh(&pmc->sflock);
read_unlock_bh(&ipv6_sk_mc_lock);
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
struct inet6_dev *idev;
struct ipv6_pinfo *inet6 = inet6_sk(sk);
struct ip6_sf_socklist *newpsl, *psl;
+ struct net *net = sock_net(sk);
int leavegroup = 0;
int i, err;
gsf->gf_fmode != MCAST_EXCLUDE)
return -EINVAL;
- idev = ip6_mc_find_dev(group, gsf->gf_interface);
+ idev = ip6_mc_find_dev(net, group, gsf->gf_interface);
if (!idev)
return -ENODEV;
dev = idev->dev;
err = 0;
+ read_lock_bh(&ipv6_sk_mc_lock);
+
if (gsf->gf_fmode == MCAST_INCLUDE && gsf->gf_numsrc == 0) {
leavegroup = 1;
goto done;
goto done;
}
if (gsf->gf_numsrc) {
- newpsl = (struct ip6_sf_socklist *)sock_kmalloc(sk,
- IP6_SFLSIZE(gsf->gf_numsrc), GFP_ATOMIC);
+ newpsl = sock_kmalloc(sk, IP6_SFLSIZE(gsf->gf_numsrc),
+ GFP_ATOMIC);
if (!newpsl) {
err = -ENOBUFS;
goto done;
sock_kfree_s(sk, newpsl, IP6_SFLSIZE(newpsl->sl_max));
goto done;
}
- } else
+ } else {
newpsl = NULL;
+ (void) ip6_mc_add_src(idev, group, gsf->gf_fmode, 0, NULL, 0);
+ }
+
+ write_lock_bh(&pmc->sflock);
psl = pmc->sflist;
if (psl) {
(void) ip6_mc_del_src(idev, group, pmc->sfmode,
(void) ip6_mc_del_src(idev, group, pmc->sfmode, 0, NULL, 0);
pmc->sflist = newpsl;
pmc->sfmode = gsf->gf_fmode;
+ write_unlock_bh(&pmc->sflock);
err = 0;
done:
+ read_unlock_bh(&ipv6_sk_mc_lock);
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
dev_put(dev);
struct net_device *dev;
struct ipv6_pinfo *inet6 = inet6_sk(sk);
struct ip6_sf_socklist *psl;
+ struct net *net = sock_net(sk);
group = &((struct sockaddr_in6 *)&gsf->gf_group)->sin6_addr;
if (!ipv6_addr_is_multicast(group))
return -EINVAL;
- idev = ip6_mc_find_dev(group, gsf->gf_interface);
+ idev = ip6_mc_find_dev(net, group, gsf->gf_interface);
if (!idev)
return -ENODEV;
dev = idev->dev;
err = -EADDRNOTAVAIL;
+ /*
+ * changes to the ipv6_mc_list require the socket lock and
+ * a read lock on ip6_sk_mc_lock. We have the socket lock,
+ * so reading the list is safe.
+ */
for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
if (pmc->ifindex != gsf->gf_interface)
copy_to_user(optval, gsf, GROUP_FILTER_SIZE(0))) {
return -EFAULT;
}
+ /* changes to psl require the socket lock, a read lock on
+ * on ipv6_sk_mc_lock and a write lock on pmc->sflock. We
+ * have the socket lock, so reading here is safe.
+ */
for (i=0; i<copycount; i++) {
struct sockaddr_in6 *psin6;
struct sockaddr_storage ss;
memset(&ss, 0, sizeof(ss));
psin6->sin6_family = AF_INET6;
psin6->sin6_addr = psl->sl_addr[i];
- if (copy_to_user(&optval->gf_slist[i], &ss, sizeof(ss)))
+ if (copy_to_user(&optval->gf_slist[i], &ss, sizeof(ss)))
return -EFAULT;
}
return 0;
return err;
}
-int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
- struct in6_addr *src_addr)
+int inet6_mc_check(struct sock *sk, const struct in6_addr *mc_addr,
+ const struct in6_addr *src_addr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct ipv6_mc_socklist *mc;
read_unlock(&ipv6_sk_mc_lock);
return 1;
}
+ read_lock(&mc->sflock);
psl = mc->sflist;
if (!psl) {
rv = mc->sfmode == MCAST_EXCLUDE;
if (mc->sfmode == MCAST_EXCLUDE && i < psl->sl_count)
rv = 0;
}
+ read_unlock(&mc->sflock);
read_unlock(&ipv6_sk_mc_lock);
return rv;
* for deleted items allows change reports to use common code with
* non-deleted or query-response MCA's.
*/
- pmc = (struct ifmcaddr6 *)kmalloc(sizeof(*pmc), GFP_ATOMIC);
+ pmc = kzalloc(sizeof(*pmc), GFP_ATOMIC);
if (!pmc)
return;
- memset(pmc, 0, sizeof(*pmc));
+
spin_lock_bh(&im->mca_lock);
spin_lock_init(&pmc->mca_lock);
pmc->idev = im->idev;
/*
* device multicast group inc (add if not found)
*/
-int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr)
+int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr)
{
struct ifmcaddr6 *mc;
struct inet6_dev *idev;
* not found: create a new one.
*/
- mc = kmalloc(sizeof(struct ifmcaddr6), GFP_ATOMIC);
+ mc = kzalloc(sizeof(struct ifmcaddr6), GFP_ATOMIC);
if (mc == NULL) {
write_unlock_bh(&idev->lock);
return -ENOMEM;
}
- memset(mc, 0, sizeof(struct ifmcaddr6));
- init_timer(&mc->mca_timer);
- mc->mca_timer.function = igmp6_timer_handler;
- mc->mca_timer.data = (unsigned long) mc;
+ setup_timer(&mc->mca_timer, igmp6_timer_handler, (unsigned long)mc);
ipv6_addr_copy(&mc->mca_addr, addr);
mc->idev = idev;
/*
* device multicast group del
*/
-int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr)
+int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr)
{
struct ifmcaddr6 *ma, **map;
return -ENOENT;
}
-int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr)
+int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr)
{
struct inet6_dev *idev = in6_dev_get(dev);
int err;
if (!pskb_may_pull(skb, sizeof(struct icmp6hdr)))
return 0;
- pic = (struct icmp6hdr *)skb->h.raw;
+ pic = icmp6_hdr(skb);
switch (pic->icmp6_type) {
case ICMPV6_MGM_QUERY:
/*
* check if the interface/address pair is valid
*/
-int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
- struct in6_addr *src_addr)
+int ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
+ const struct in6_addr *src_addr)
{
struct inet6_dev *idev;
struct ifmcaddr6 *mc;
ma->mca_flags |= MAF_TIMER_RUNNING;
}
-static void mld_marksources(struct ifmcaddr6 *pmc, int nsrcs,
+/* mark EXCLUDE-mode sources */
+static int mld_xmarksources(struct ifmcaddr6 *pmc, int nsrcs,
+ struct in6_addr *srcs)
+{
+ struct ip6_sf_list *psf;
+ int i, scount;
+
+ scount = 0;
+ for (psf=pmc->mca_sources; psf; psf=psf->sf_next) {
+ if (scount == nsrcs)
+ break;
+ for (i=0; i<nsrcs; i++) {
+ /* skip inactive filters */
+ if (pmc->mca_sfcount[MCAST_INCLUDE] ||
+ pmc->mca_sfcount[MCAST_EXCLUDE] !=
+ psf->sf_count[MCAST_EXCLUDE])
+ continue;
+ if (ipv6_addr_equal(&srcs[i], &psf->sf_addr)) {
+ scount++;
+ break;
+ }
+ }
+ }
+ pmc->mca_flags &= ~MAF_GSQUERY;
+ if (scount == nsrcs) /* all sources excluded */
+ return 0;
+ return 1;
+}
+
+static int mld_marksources(struct ifmcaddr6 *pmc, int nsrcs,
struct in6_addr *srcs)
{
struct ip6_sf_list *psf;
int i, scount;
+ if (pmc->mca_sfmode == MCAST_EXCLUDE)
+ return mld_xmarksources(pmc, nsrcs, srcs);
+
+ /* mark INCLUDE-mode sources */
+
scount = 0;
for (psf=pmc->mca_sources; psf; psf=psf->sf_next) {
if (scount == nsrcs)
break;
- for (i=0; i<nsrcs; i++)
+ for (i=0; i<nsrcs; i++) {
if (ipv6_addr_equal(&srcs[i], &psf->sf_addr)) {
psf->sf_gsresp = 1;
scount++;
break;
}
+ }
+ }
+ if (!scount) {
+ pmc->mca_flags &= ~MAF_GSQUERY;
+ return 0;
}
+ pmc->mca_flags |= MAF_GSQUERY;
+ return 1;
}
int igmp6_event_query(struct sk_buff *skb)
return -EINVAL;
/* compute payload length excluding extension headers */
- len = ntohs(skb->nh.ipv6h->payload_len) + sizeof(struct ipv6hdr);
- len -= (char *)skb->h.raw - (char *)skb->nh.ipv6h;
+ len = ntohs(ipv6_hdr(skb)->payload_len) + sizeof(struct ipv6hdr);
+ len -= skb_network_header_len(skb);
/* Drop queries with not link local source */
- if (!(ipv6_addr_type(&skb->nh.ipv6h->saddr)&IPV6_ADDR_LINKLOCAL))
+ if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL))
return -EINVAL;
idev = in6_dev_get(skb->dev);
if (idev == NULL)
return 0;
- hdr = (struct icmp6hdr *) skb->h.raw;
+ hdr = icmp6_hdr(skb);
group = (struct in6_addr *) (hdr + 1);
group_type = ipv6_addr_type(group);
/* clear deleted report items */
mld_clear_delrec(idev);
} else if (len >= 28) {
- int srcs_offset = sizeof(struct mld2_query) -
+ int srcs_offset = sizeof(struct mld2_query) -
sizeof(struct icmp6hdr);
if (!pskb_may_pull(skb, srcs_offset)) {
in6_dev_put(idev);
return -EINVAL;
}
- mlh2 = (struct mld2_query *) skb->h.raw;
+ mlh2 = (struct mld2_query *)skb_transport_header(skb);
max_delay = (MLDV2_MRC(ntohs(mlh2->mrc))*HZ)/1000;
if (!max_delay)
max_delay = 1;
}
/* mark sources to include, if group & source-specific */
if (mlh2->nsrcs != 0) {
- if (!pskb_may_pull(skb, srcs_offset +
- mlh2->nsrcs * sizeof(struct in6_addr))) {
+ if (!pskb_may_pull(skb, srcs_offset +
+ ntohs(mlh2->nsrcs) * sizeof(struct in6_addr))) {
in6_dev_put(idev);
return -EINVAL;
}
- mlh2 = (struct mld2_query *) skb->h.raw;
+ mlh2 = (struct mld2_query *)skb_transport_header(skb);
mark = 1;
}
} else {
}
} else {
for (ma = idev->mc_list; ma; ma=ma->next) {
- if (group_type != IPV6_ADDR_ANY &&
- !ipv6_addr_equal(group, &ma->mca_addr))
+ if (!ipv6_addr_equal(group, &ma->mca_addr))
continue;
spin_lock_bh(&ma->mca_lock);
if (ma->mca_flags & MAF_TIMER_RUNNING) {
else
ma->mca_flags &= ~MAF_GSQUERY;
}
- if (ma->mca_flags & MAF_GSQUERY)
- mld_marksources(ma, ntohs(mlh2->nsrcs),
- mlh2->srcs);
- igmp6_group_queried(ma, max_delay);
+ if (!(ma->mca_flags & MAF_GSQUERY) ||
+ mld_marksources(ma, ntohs(mlh2->nsrcs), mlh2->srcs))
+ igmp6_group_queried(ma, max_delay);
spin_unlock_bh(&ma->mca_lock);
- if (group_type != IPV6_ADDR_ANY)
- break;
+ break;
}
}
read_unlock_bh(&idev->lock);
if (skb->pkt_type == PACKET_LOOPBACK)
return 0;
+ /* send our report if the MC router may not have heard this report */
+ if (skb->pkt_type != PACKET_MULTICAST &&
+ skb->pkt_type != PACKET_BROADCAST)
+ return 0;
+
if (!pskb_may_pull(skb, sizeof(struct in6_addr)))
return -EINVAL;
- hdr = (struct icmp6hdr*) skb->h.raw;
+ hdr = icmp6_hdr(skb);
/* Drop reports with not link local source */
- addr_type = ipv6_addr_type(&skb->nh.ipv6h->saddr);
- if (addr_type != IPV6_ADDR_ANY &&
+ addr_type = ipv6_addr_type(&ipv6_hdr(skb)->saddr);
+ if (addr_type != IPV6_ADDR_ANY &&
!(addr_type&IPV6_ADDR_LINKLOCAL))
return -EINVAL;
case MLD2_MODE_IS_EXCLUDE:
if (gdeleted || sdeleted)
return 0;
- return !((pmc->mca_flags & MAF_GSQUERY) && !psf->sf_gsresp);
+ if (!((pmc->mca_flags & MAF_GSQUERY) && !psf->sf_gsresp)) {
+ if (pmc->mca_sfmode == MCAST_INCLUDE)
+ return 1;
+ /* don't include if this source is excluded
+ * in all filters
+ */
+ if (psf->sf_count[MCAST_INCLUDE])
+ return type == MLD2_MODE_IS_INCLUDE;
+ return pmc->mca_sfcount[MCAST_EXCLUDE] ==
+ psf->sf_count[MCAST_EXCLUDE];
+ }
+ return 0;
case MLD2_CHANGE_TO_INCLUDE:
if (gdeleted || sdeleted)
return 0;
static struct sk_buff *mld_newpack(struct net_device *dev, int size)
{
- struct sock *sk = igmp6_socket->sk;
+ struct net *net = dev_net(dev);
+ struct sock *sk = net->ipv6.igmp_sk;
struct sk_buff *skb;
struct mld2_report *pmr;
struct in6_addr addr_buf;
+ const struct in6_addr *saddr;
int err;
u8 ra[8] = { IPPROTO_ICMPV6, 0,
IPV6_TLV_ROUTERALERT, 2, 0, 0,
IPV6_TLV_PADN, 0 };
/* we assume size > sizeof(ra) here */
- skb = sock_alloc_send_skb(sk, size + LL_RESERVED_SPACE(dev), 1, &err);
+ skb = sock_alloc_send_skb(sk, size + LL_ALLOCATED_SPACE(dev), 1, &err);
- if (skb == 0)
+ if (!skb)
return NULL;
skb_reserve(skb, LL_RESERVED_SPACE(dev));
- if (ipv6_get_lladdr(dev, &addr_buf)) {
+ if (ipv6_get_lladdr(dev, &addr_buf, IFA_F_TENTATIVE)) {
/* <draft-ietf-magma-mld-source-05.txt>:
- * use unspecified address as the source address
+ * use unspecified address as the source address
* when a valid link-local address is not available.
*/
- memset(&addr_buf, 0, sizeof(addr_buf));
- }
+ saddr = &in6addr_any;
+ } else
+ saddr = &addr_buf;
- ip6_nd_hdr(sk, skb, dev, &addr_buf, &mld2_all_mcr, NEXTHDR_HOP, 0);
+ ip6_nd_hdr(sk, skb, dev, saddr, &mld2_all_mcr, NEXTHDR_HOP, 0);
memcpy(skb_put(skb, sizeof(ra)), ra, sizeof(ra));
- pmr =(struct mld2_report *)skb_put(skb, sizeof(*pmr));
- skb->h.raw = (unsigned char *)pmr;
+ skb_set_transport_header(skb, skb_tail_pointer(skb) - skb->data);
+ skb_put(skb, sizeof(*pmr));
+ pmr = (struct mld2_report *)skb_transport_header(skb);
pmr->type = ICMPV6_MLD2_REPORT;
pmr->resv1 = 0;
pmr->csum = 0;
return skb;
}
-static inline int mld_dev_queue_xmit2(struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
-
- if (dev->hard_header) {
- unsigned char ha[MAX_ADDR_LEN];
- int err;
-
- ndisc_mc_map(&skb->nh.ipv6h->daddr, ha, dev, 1);
- err = dev->hard_header(skb, dev, ETH_P_IPV6, ha, NULL, skb->len);
- if (err < 0) {
- kfree_skb(skb);
- return err;
- }
- }
- return dev_queue_xmit(skb);
-}
-
-static inline int mld_dev_queue_xmit(struct sk_buff *skb)
-{
- return NF_HOOK(PF_INET6, NF_IP6_POST_ROUTING, skb, NULL, skb->dev,
- mld_dev_queue_xmit2);
-}
-
static void mld_sendpack(struct sk_buff *skb)
{
- struct ipv6hdr *pip6 = skb->nh.ipv6h;
- struct mld2_report *pmr = (struct mld2_report *)skb->h.raw;
+ struct ipv6hdr *pip6 = ipv6_hdr(skb);
+ struct mld2_report *pmr =
+ (struct mld2_report *)skb_transport_header(skb);
int payload_len, mldlen;
struct inet6_dev *idev = in6_dev_get(skb->dev);
+ struct net *net = dev_net(skb->dev);
int err;
+ struct flowi fl;
+ struct dst_entry *dst;
- IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
- payload_len = skb->tail - (unsigned char *)skb->nh.ipv6h -
- sizeof(struct ipv6hdr);
- mldlen = skb->tail - skb->h.raw;
+ IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
+
+ payload_len = (skb->tail - skb->network_header) - sizeof(*pip6);
+ mldlen = skb->tail - skb->transport_header;
pip6->payload_len = htons(payload_len);
pmr->csum = csum_ipv6_magic(&pip6->saddr, &pip6->daddr, mldlen,
- IPPROTO_ICMPV6, csum_partial(skb->h.raw, mldlen, 0));
- err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, skb->dev,
- mld_dev_queue_xmit);
+ IPPROTO_ICMPV6, csum_partial(skb_transport_header(skb),
+ mldlen, 0));
+
+ dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
+
+ if (!dst) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ icmpv6_flow_init(net->ipv6.igmp_sk, &fl, ICMPV6_MLD2_REPORT,
+ &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
+ skb->dev->ifindex);
+
+ err = xfrm_lookup(net, &dst, &fl, NULL, 0);
+ skb_dst_set(skb, dst);
+ if (err)
+ goto err_out;
+
+ payload_len = skb->len;
+
+ err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
+ dst_output);
+out:
if (!err) {
- ICMP6_INC_STATS(idev,ICMP6_MIB_OUTMSGS);
- IP6_INC_STATS(IPSTATS_MIB_OUTMCASTPKTS);
+ ICMP6MSGOUT_INC_STATS_BH(net, idev, ICMPV6_MLD2_REPORT);
+ ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTMSGS);
+ IP6_UPD_PO_STATS_BH(net, idev, IPSTATS_MIB_OUTMCAST, payload_len);
} else
- IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
+ IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_OUTDISCARDS);
if (likely(idev != NULL))
in6_dev_put(idev);
+ return;
+
+err_out:
+ kfree_skb(skb);
+ goto out;
}
static int grec_size(struct ifmcaddr6 *pmc, int type, int gdel, int sdel)
pgr->grec_auxwords = 0;
pgr->grec_nsrcs = 0;
pgr->grec_mca = pmc->mca_addr; /* structure copy */
- pmr = (struct mld2_report *)skb->h.raw;
+ pmr = (struct mld2_report *)skb_transport_header(skb);
pmr->ngrec = htons(ntohs(pmr->ngrec)+1);
*ppgr = pgr;
return skb;
struct mld2_report *pmr;
struct mld2_grec *pgr = NULL;
struct ip6_sf_list *psf, *psf_next, *psf_prev, **psf_list;
- int scount, first, isquery, truncate;
+ int scount, stotal, first, isquery, truncate;
if (pmc->mca_flags & MAF_NOREPORT)
return skb;
truncate = type == MLD2_MODE_IS_EXCLUDE ||
type == MLD2_CHANGE_TO_EXCLUDE;
+ stotal = scount = 0;
+
psf_list = sdeleted ? &pmc->mca_tomb : &pmc->mca_sources;
- if (!*psf_list) {
- if (type == MLD2_ALLOW_NEW_SOURCES ||
- type == MLD2_BLOCK_OLD_SOURCES)
- return skb;
- if (pmc->mca_crcount || isquery) {
- /* make sure we have room for group header and at
- * least one source.
- */
- if (skb && AVAILABLE(skb) < sizeof(struct mld2_grec)+
- sizeof(struct in6_addr)) {
- mld_sendpack(skb);
- skb = NULL; /* add_grhead will get a new one */
- }
- skb = add_grhead(skb, pmc, type, &pgr);
- }
- return skb;
- }
- pmr = skb ? (struct mld2_report *)skb->h.raw : NULL;
+ if (!*psf_list)
+ goto empty_source;
+
+ pmr = skb ? (struct mld2_report *)skb_transport_header(skb) : NULL;
/* EX and TO_EX get a fresh packet, if needed */
if (truncate) {
}
}
first = 1;
- scount = 0;
psf_prev = NULL;
for (psf=*psf_list; psf; psf=psf_next) {
struct in6_addr *psrc;
skb = add_grhead(skb, pmc, type, &pgr);
first = 0;
}
+ if (!skb)
+ return NULL;
psrc = (struct in6_addr *)skb_put(skb, sizeof(*psrc));
*psrc = psf->sf_addr;
- scount++;
+ scount++; stotal++;
if ((type == MLD2_ALLOW_NEW_SOURCES ||
type == MLD2_BLOCK_OLD_SOURCES) && psf->sf_crcount) {
psf->sf_crcount--;
}
psf_prev = psf;
}
+
+empty_source:
+ if (!stotal) {
+ if (type == MLD2_ALLOW_NEW_SOURCES ||
+ type == MLD2_BLOCK_OLD_SOURCES)
+ return skb;
+ if (pmc->mca_crcount || isquery) {
+ /* make sure we have room for group header */
+ if (skb && AVAILABLE(skb) < sizeof(struct mld2_grec)) {
+ mld_sendpack(skb);
+ skb = NULL; /* add_grhead will get a new one */
+ }
+ skb = add_grhead(skb, pmc, type, &pgr);
+ }
+ }
if (pgr)
pgr->grec_nsrcs = htons(scount);
skb = add_grec(skb, pmc, dtype, 1, 1);
}
if (pmc->mca_crcount) {
- pmc->mca_crcount--;
if (pmc->mca_sfmode == MCAST_EXCLUDE) {
type = MLD2_CHANGE_TO_INCLUDE;
skb = add_grec(skb, pmc, type, 1, 0);
}
+ pmc->mca_crcount--;
if (pmc->mca_crcount == 0) {
mld_clear_zeros(&pmc->mca_tomb);
mld_clear_zeros(&pmc->mca_sources);
/* filter mode changes */
if (pmc->mca_crcount) {
- pmc->mca_crcount--;
if (pmc->mca_sfmode == MCAST_EXCLUDE)
type = MLD2_CHANGE_TO_EXCLUDE;
else
type = MLD2_CHANGE_TO_INCLUDE;
skb = add_grec(skb, pmc, type, 0, 0);
+ pmc->mca_crcount--;
}
spin_unlock_bh(&pmc->mca_lock);
}
static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
{
- struct sock *sk = igmp6_socket->sk;
+ struct net *net = dev_net(dev);
+ struct sock *sk = net->ipv6.igmp_sk;
struct inet6_dev *idev;
- struct sk_buff *skb;
- struct icmp6hdr *hdr;
- struct in6_addr *snd_addr;
+ struct sk_buff *skb;
+ struct icmp6hdr *hdr;
+ const struct in6_addr *snd_addr, *saddr;
struct in6_addr *addrp;
struct in6_addr addr_buf;
- struct in6_addr all_routers;
int err, len, payload_len, full_len;
u8 ra[8] = { IPPROTO_ICMPV6, 0,
IPV6_TLV_ROUTERALERT, 2, 0, 0,
IPV6_TLV_PADN, 0 };
+ struct flowi fl;
+ struct dst_entry *dst;
- IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
- snd_addr = addr;
- if (type == ICMPV6_MGM_REDUCTION) {
- snd_addr = &all_routers;
- ipv6_addr_all_routers(&all_routers);
- }
+ if (type == ICMPV6_MGM_REDUCTION)
+ snd_addr = &in6addr_linklocal_allrouters;
+ else
+ snd_addr = addr;
len = sizeof(struct icmp6hdr) + sizeof(struct in6_addr);
payload_len = len + sizeof(ra);
full_len = sizeof(struct ipv6hdr) + payload_len;
- skb = sock_alloc_send_skb(sk, LL_RESERVED_SPACE(dev) + full_len, 1, &err);
+ rcu_read_lock();
+ IP6_UPD_PO_STATS(net, __in6_dev_get(dev),
+ IPSTATS_MIB_OUT, full_len);
+ rcu_read_unlock();
+
+ skb = sock_alloc_send_skb(sk, LL_ALLOCATED_SPACE(dev) + full_len, 1, &err);
if (skb == NULL) {
- IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
+ rcu_read_lock();
+ IP6_INC_STATS(net, __in6_dev_get(dev),
+ IPSTATS_MIB_OUTDISCARDS);
+ rcu_read_unlock();
return;
}
skb_reserve(skb, LL_RESERVED_SPACE(dev));
- if (ipv6_get_lladdr(dev, &addr_buf)) {
+ if (ipv6_get_lladdr(dev, &addr_buf, IFA_F_TENTATIVE)) {
/* <draft-ietf-magma-mld-source-05.txt>:
- * use unspecified address as the source address
+ * use unspecified address as the source address
* when a valid link-local address is not available.
*/
- memset(&addr_buf, 0, sizeof(addr_buf));
- }
+ saddr = &in6addr_any;
+ } else
+ saddr = &addr_buf;
- ip6_nd_hdr(sk, skb, dev, &addr_buf, snd_addr, NEXTHDR_HOP, payload_len);
+ ip6_nd_hdr(sk, skb, dev, saddr, snd_addr, NEXTHDR_HOP, payload_len);
memcpy(skb_put(skb, sizeof(ra)), ra, sizeof(ra));
addrp = (struct in6_addr *) skb_put(skb, sizeof(struct in6_addr));
ipv6_addr_copy(addrp, addr);
- hdr->icmp6_cksum = csum_ipv6_magic(&addr_buf, snd_addr, len,
+ hdr->icmp6_cksum = csum_ipv6_magic(saddr, snd_addr, len,
IPPROTO_ICMPV6,
- csum_partial((__u8 *) hdr, len, 0));
+ csum_partial(hdr, len, 0));
idev = in6_dev_get(skb->dev);
- err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, skb->dev,
- mld_dev_queue_xmit);
+ dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
+ if (!dst) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ icmpv6_flow_init(sk, &fl, type,
+ &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
+ skb->dev->ifindex);
+
+ err = xfrm_lookup(net, &dst, &fl, NULL, 0);
+ if (err)
+ goto err_out;
+
+ skb_dst_set(skb, dst);
+ err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
+ dst_output);
+out:
if (!err) {
- if (type == ICMPV6_MGM_REDUCTION)
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTGROUPMEMBREDUCTIONS);
- else
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTGROUPMEMBRESPONSES);
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
- IP6_INC_STATS(IPSTATS_MIB_OUTMCASTPKTS);
+ ICMP6MSGOUT_INC_STATS(net, idev, type);
+ ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
+ IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, full_len);
} else
- IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
+ IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
if (likely(idev != NULL))
in6_dev_put(idev);
return;
+
+err_out:
+ kfree_skb(skb);
+ goto out;
}
static int ip6_mc_del1_src(struct ifmcaddr6 *pmc, int sfmode,
psf_prev = psf;
}
if (!psf) {
- psf = (struct ip6_sf_list *)kmalloc(sizeof(*psf), GFP_ATOMIC);
+ psf = kzalloc(sizeof(*psf), GFP_ATOMIC);
if (!psf)
return -ENOBUFS;
- memset(psf, 0, sizeof(*psf));
+
psf->sf_addr = *psfsrc;
if (psf_prev) {
psf_prev->sf_next = psf;
static int sf_setstate(struct ifmcaddr6 *pmc)
{
- struct ip6_sf_list *psf;
+ struct ip6_sf_list *psf, *dpsf;
int mca_xcount = pmc->mca_sfcount[MCAST_EXCLUDE];
int qrv = pmc->idev->mc_qrv;
int new_in, rv;
!psf->sf_count[MCAST_INCLUDE];
} else
new_in = psf->sf_count[MCAST_INCLUDE] != 0;
- if (new_in != psf->sf_oldin) {
- psf->sf_crcount = qrv;
+ if (new_in) {
+ if (!psf->sf_oldin) {
+ struct ip6_sf_list *prev = NULL;
+
+ for (dpsf=pmc->mca_tomb; dpsf;
+ dpsf=dpsf->sf_next) {
+ if (ipv6_addr_equal(&dpsf->sf_addr,
+ &psf->sf_addr))
+ break;
+ prev = dpsf;
+ }
+ if (dpsf) {
+ if (prev)
+ prev->sf_next = dpsf->sf_next;
+ else
+ pmc->mca_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->mca_tomb; dpsf; dpsf=dpsf->sf_next)
+ if (ipv6_addr_equal(&dpsf->sf_addr,
+ &psf->sf_addr))
+ break;
+ if (!dpsf) {
+ dpsf = (struct ip6_sf_list *)
+ kmalloc(sizeof(*dpsf), GFP_ATOMIC);
+ if (!dpsf)
+ continue;
+ *dpsf = *psf;
+ /* pmc->mca_lock held by callers */
+ dpsf->sf_next = pmc->mca_tomb;
+ pmc->mca_tomb = dpsf;
+ }
+ dpsf->sf_crcount = qrv;
rv++;
}
}
for (j=0; j<i; j++)
(void) ip6_mc_del1_src(pmc, sfmode, &psfsrc[i]);
} else if (isexclude != (pmc->mca_sfcount[MCAST_EXCLUDE] != 0)) {
- struct inet6_dev *idev = pmc->idev;
struct ip6_sf_list *psf;
/* filter mode change */
{
int err;
- if (iml->sflist == 0) {
+ /* callers have the socket lock and a write lock on ipv6_sk_mc_lock,
+ * so no other readers or writers of iml or its sflist
+ */
+ if (!iml->sflist) {
/* any-source empty exclude case */
return ip6_mc_del_src(idev, &iml->addr, iml->sfmode, 0, NULL, 0);
}
ma_put(ma);
}
+/* Device changing type */
+
+void ipv6_mc_unmap(struct inet6_dev *idev)
+{
+ struct ifmcaddr6 *i;
+
+ /* Install multicast list, except for all-nodes (already installed) */
+
+ read_lock_bh(&idev->lock);
+ for (i = idev->mc_list; i; i = i->next)
+ igmp6_group_dropped(i);
+ read_unlock_bh(&idev->lock);
+}
+
+void ipv6_mc_remap(struct inet6_dev *idev)
+{
+ ipv6_mc_up(idev);
+}
+
/* Device going down */
void ipv6_mc_down(struct inet6_dev *idev)
void ipv6_mc_init_dev(struct inet6_dev *idev)
{
- struct in6_addr maddr;
-
write_lock_bh(&idev->lock);
rwlock_init(&idev->mc_lock);
idev->mc_gq_running = 0;
- init_timer(&idev->mc_gq_timer);
- idev->mc_gq_timer.data = (unsigned long) idev;
- idev->mc_gq_timer.function = &mld_gq_timer_expire;
+ setup_timer(&idev->mc_gq_timer, mld_gq_timer_expire,
+ (unsigned long)idev);
idev->mc_tomb = NULL;
idev->mc_ifc_count = 0;
- init_timer(&idev->mc_ifc_timer);
- idev->mc_ifc_timer.data = (unsigned long) idev;
- idev->mc_ifc_timer.function = &mld_ifc_timer_expire;
+ setup_timer(&idev->mc_ifc_timer, mld_ifc_timer_expire,
+ (unsigned long)idev);
idev->mc_qrv = MLD_QRV_DEFAULT;
idev->mc_maxdelay = IGMP6_UNSOLICITED_IVAL;
idev->mc_v1_seen = 0;
write_unlock_bh(&idev->lock);
-
- /* Add all-nodes address. */
- ipv6_addr_all_nodes(&maddr);
- ipv6_dev_mc_inc(idev->dev, &maddr);
}
/*
void ipv6_mc_destroy_dev(struct inet6_dev *idev)
{
struct ifmcaddr6 *i;
- struct in6_addr maddr;
/* Deactivate timers */
ipv6_mc_down(idev);
/* Delete all-nodes address. */
- ipv6_addr_all_nodes(&maddr);
-
/* We cannot call ipv6_dev_mc_dec() directly, our caller in
* addrconf.c has NULL'd out dev->ip6_ptr so in6_dev_get() will
* fail.
*/
- __ipv6_dev_mc_dec(idev, &maddr);
+ __ipv6_dev_mc_dec(idev, &in6addr_linklocal_allnodes);
- if (idev->cnf.forwarding) {
- ipv6_addr_all_routers(&maddr);
- __ipv6_dev_mc_dec(idev, &maddr);
- }
+ if (idev->cnf.forwarding)
+ __ipv6_dev_mc_dec(idev, &in6addr_linklocal_allrouters);
write_lock_bh(&idev->lock);
while ((i = idev->mc_list) != NULL) {
#ifdef CONFIG_PROC_FS
struct igmp6_mc_iter_state {
+ struct seq_net_private p;
struct net_device *dev;
struct inet6_dev *idev;
};
{
struct ifmcaddr6 *im = NULL;
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
+ struct net *net = seq_file_net(seq);
- for (state->dev = dev_base, state->idev = NULL;
- state->dev;
- state->dev = state->dev->next) {
+ state->idev = NULL;
+ for_each_netdev_rcu(net, state->dev) {
struct inet6_dev *idev;
- idev = in6_dev_get(state->dev);
+ idev = __in6_dev_get(state->dev);
if (!idev)
continue;
read_lock_bh(&idev->lock);
break;
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
}
return im;
}
im = im->next;
while (!im) {
- if (likely(state->idev != NULL)) {
+ if (likely(state->idev != NULL))
read_unlock_bh(&state->idev->lock);
- in6_dev_put(state->idev);
- }
- state->dev = state->dev->next;
+
+ state->dev = next_net_device_rcu(state->dev);
if (!state->dev) {
state->idev = NULL;
break;
}
- state->idev = in6_dev_get(state->dev);
+ state->idev = __in6_dev_get(state->dev);
if (!state->idev)
continue;
read_lock_bh(&state->idev->lock);
}
static void *igmp6_mc_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(RCU)
{
- read_lock(&dev_base_lock);
+ rcu_read_lock();
return igmp6_mc_get_idx(seq, *pos);
}
static void *igmp6_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
- struct ifmcaddr6 *im;
- im = igmp6_mc_get_next(seq, v);
+ struct ifmcaddr6 *im = igmp6_mc_get_next(seq, v);
+
++*pos;
return im;
}
static void igmp6_mc_seq_stop(struct seq_file *seq, void *v)
+ __releases(RCU)
{
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
+
if (likely(state->idev != NULL)) {
read_unlock_bh(&state->idev->lock);
- in6_dev_put(state->idev);
state->idev = NULL;
}
state->dev = NULL;
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
}
static int igmp6_mc_seq_show(struct seq_file *seq, void *v)
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
seq_printf(seq,
- "%-4d %-15s %04x%04x%04x%04x%04x%04x%04x%04x %5d %08X %ld\n",
+ "%-4d %-15s %pi6 %5d %08X %ld\n",
state->dev->ifindex, state->dev->name,
- NIP6(im->mca_addr),
+ &im->mca_addr,
im->mca_users, im->mca_flags,
(im->mca_flags&MAF_TIMER_RUNNING) ?
jiffies_to_clock_t(im->mca_timer.expires-jiffies) : 0);
return 0;
}
-static struct seq_operations igmp6_mc_seq_ops = {
+static const struct seq_operations igmp6_mc_seq_ops = {
.start = igmp6_mc_seq_start,
.next = igmp6_mc_seq_next,
.stop = igmp6_mc_seq_stop,
static int igmp6_mc_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct igmp6_mc_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &igmp6_mc_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
- memset(s, 0, sizeof(*s));
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_net(inode, file, &igmp6_mc_seq_ops,
+ sizeof(struct igmp6_mc_iter_state));
}
-static struct file_operations igmp6_mc_seq_fops = {
+static const struct file_operations igmp6_mc_seq_fops = {
.owner = THIS_MODULE,
.open = igmp6_mc_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
struct igmp6_mcf_iter_state {
+ struct seq_net_private p;
struct net_device *dev;
struct inet6_dev *idev;
struct ifmcaddr6 *im;
struct ip6_sf_list *psf = NULL;
struct ifmcaddr6 *im = NULL;
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
+ struct net *net = seq_file_net(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 inet6_dev *idev;
- idev = in6_dev_get(state->dev);
+ idev = __in6_dev_get(state->dev);
if (unlikely(idev == NULL))
continue;
read_lock_bh(&idev->lock);
spin_unlock_bh(&im->mca_lock);
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
}
return psf;
}
spin_unlock_bh(&state->im->mca_lock);
state->im = state->im->next;
while (!state->im) {
- if (likely(state->idev != NULL)) {
+ if (likely(state->idev != NULL))
read_unlock_bh(&state->idev->lock);
- in6_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 = in6_dev_get(state->dev);
+ state->idev = __in6_dev_get(state->dev);
if (!state->idev)
continue;
read_lock_bh(&state->idev->lock);
}
static void *igmp6_mcf_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(RCU)
{
- read_lock(&dev_base_lock);
+ rcu_read_lock();
return *pos ? igmp6_mcf_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
}
}
static void igmp6_mcf_seq_stop(struct seq_file *seq, void *v)
+ __releases(RCU)
{
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
if (likely(state->im != NULL)) {
}
if (likely(state->idev != NULL)) {
read_unlock_bh(&state->idev->lock);
- in6_dev_put(state->idev);
state->idev = NULL;
}
state->dev = NULL;
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
}
static int igmp6_mcf_seq_show(struct seq_file *seq, void *v)
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
if (v == SEQ_START_TOKEN) {
- seq_printf(seq,
+ seq_printf(seq,
"%3s %6s "
"%32s %32s %6s %6s\n", "Idx",
"Device", "Multicast Address",
"Source Address", "INC", "EXC");
} else {
seq_printf(seq,
- "%3d %6.6s "
- "%04x%04x%04x%04x%04x%04x%04x%04x "
- "%04x%04x%04x%04x%04x%04x%04x%04x "
- "%6lu %6lu\n",
+ "%3d %6.6s %pi6 %pi6 %6lu %6lu\n",
state->dev->ifindex, state->dev->name,
- NIP6(state->im->mca_addr),
- NIP6(psf->sf_addr),
+ &state->im->mca_addr,
+ &psf->sf_addr,
psf->sf_count[MCAST_INCLUDE],
psf->sf_count[MCAST_EXCLUDE]);
}
return 0;
}
-static struct seq_operations igmp6_mcf_seq_ops = {
+static const struct seq_operations igmp6_mcf_seq_ops = {
.start = igmp6_mcf_seq_start,
.next = igmp6_mcf_seq_next,
.stop = igmp6_mcf_seq_stop,
static int igmp6_mcf_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct igmp6_mcf_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &igmp6_mcf_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
- memset(s, 0, sizeof(*s));
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_net(inode, file, &igmp6_mcf_seq_ops,
+ sizeof(struct igmp6_mcf_iter_state));
}
-static struct file_operations igmp6_mcf_seq_fops = {
+static const struct file_operations igmp6_mcf_seq_fops = {
.owner = THIS_MODULE,
.open = igmp6_mcf_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
+
+static int __net_init igmp6_proc_init(struct net *net)
+{
+ int err;
+
+ err = -ENOMEM;
+ if (!proc_net_fops_create(net, "igmp6", S_IRUGO, &igmp6_mc_seq_fops))
+ goto out;
+ if (!proc_net_fops_create(net, "mcfilter6", S_IRUGO,
+ &igmp6_mcf_seq_fops))
+ goto out_proc_net_igmp6;
+
+ err = 0;
+out:
+ return err;
+
+out_proc_net_igmp6:
+ proc_net_remove(net, "igmp6");
+ goto out;
+}
+
+static void __net_exit igmp6_proc_exit(struct net *net)
+{
+ proc_net_remove(net, "mcfilter6");
+ proc_net_remove(net, "igmp6");
+}
+#else
+static inline int igmp6_proc_init(struct net *net)
+{
+ return 0;
+}
+static inline void igmp6_proc_exit(struct net *net)
+{
+}
#endif
-int __init igmp6_init(struct net_proto_family *ops)
+static int __net_init igmp6_net_init(struct net *net)
{
- struct ipv6_pinfo *np;
- struct sock *sk;
int err;
- err = sock_create_kern(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6, &igmp6_socket);
+ err = inet_ctl_sock_create(&net->ipv6.igmp_sk, PF_INET6,
+ SOCK_RAW, IPPROTO_ICMPV6, net);
if (err < 0) {
printk(KERN_ERR
"Failed to initialize the IGMP6 control socket (err %d).\n",
err);
- igmp6_socket = NULL; /* For safety. */
- return err;
+ goto out;
}
- sk = igmp6_socket->sk;
- sk->sk_allocation = GFP_ATOMIC;
- sk->sk_prot->unhash(sk);
+ inet6_sk(net->ipv6.igmp_sk)->hop_limit = 1;
+
+ err = igmp6_proc_init(net);
+ if (err)
+ goto out_sock_create;
+out:
+ return err;
+
+out_sock_create:
+ inet_ctl_sock_destroy(net->ipv6.igmp_sk);
+ goto out;
+}
- np = inet6_sk(sk);
- np->hop_limit = 1;
+static void __net_exit igmp6_net_exit(struct net *net)
+{
+ inet_ctl_sock_destroy(net->ipv6.igmp_sk);
+ igmp6_proc_exit(net);
+}
-#ifdef CONFIG_PROC_FS
- proc_net_fops_create("igmp6", S_IRUGO, &igmp6_mc_seq_fops);
- proc_net_fops_create("mcfilter6", S_IRUGO, &igmp6_mcf_seq_fops);
-#endif
+static struct pernet_operations igmp6_net_ops = {
+ .init = igmp6_net_init,
+ .exit = igmp6_net_exit,
+};
- return 0;
+int __init igmp6_init(void)
+{
+ return register_pernet_subsys(&igmp6_net_ops);
}
void igmp6_cleanup(void)
{
- sock_release(igmp6_socket);
- igmp6_socket = NULL; /* for safety */
-
-#ifdef CONFIG_PROC_FS
- proc_net_remove("mcfilter6");
- proc_net_remove("igmp6");
-#endif
+ unregister_pernet_subsys(&igmp6_net_ops);
}
Code Review / linux-3.10.git / blobdiff