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Diffstat (limited to 'net/ipv6/mcast.c')
-rw-r--r--net/ipv6/mcast.c1081
1 files changed, 636 insertions, 445 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 1f9c44442e6..617f0958e16 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -43,6 +43,9 @@
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/pkt_sched.h>
+#include <net/mld.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
@@ -70,60 +73,17 @@
#define MDBG(x)
#endif
-/*
- * These header formats should be in a separate include file, but icmpv6.h
- * doesn't have in6_addr defined in all cases, there is no __u128, and no
- * other files reference these.
- *
- * +-DLS 4/14/03
- */
-
-/* Multicast Listener Discovery version 2 headers */
-
-struct mld2_grec {
- __u8 grec_type;
- __u8 grec_auxwords;
- __be16 grec_nsrcs;
- struct in6_addr grec_mca;
- struct in6_addr grec_src[0];
-};
-
-struct mld2_report {
- __u8 type;
- __u8 resv1;
- __sum16 csum;
- __be16 resv2;
- __be16 ngrec;
- struct mld2_grec grec[0];
-};
-
-struct mld2_query {
- __u8 type;
- __u8 code;
- __sum16 csum;
- __be16 mrc;
- __be16 resv1;
- struct in6_addr mca;
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- __u8 qrv:3,
- suppress:1,
- resv2:4;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 resv2:4,
- suppress:1,
- qrv:3;
-#else
-#error "Please fix <asm/byteorder.h>"
-#endif
- __u8 qqic;
- __be16 nsrcs;
- struct in6_addr srcs[0];
+/* Ensure that we have struct in6_addr aligned on 32bit word. */
+static void *__mld2_query_bugs[] __attribute__((__unused__)) = {
+ BUILD_BUG_ON_NULL(offsetof(struct mld2_query, mld2q_srcs) % 4),
+ BUILD_BUG_ON_NULL(offsetof(struct mld2_report, mld2r_grec) % 4),
+ BUILD_BUG_ON_NULL(offsetof(struct mld2_grec, grec_mca) % 4)
};
static struct in6_addr mld2_all_mcr = MLD2_ALL_MCR_INIT;
/* Big mc list lock for all the sockets */
-static DEFINE_RWLOCK(ipv6_sk_mc_lock);
+static DEFINE_SPINLOCK(ipv6_sk_mc_lock);
static void igmp6_join_group(struct ifmcaddr6 *ma);
static void igmp6_leave_group(struct ifmcaddr6 *ma);
@@ -133,36 +93,30 @@ static void mld_gq_timer_expire(unsigned long data);
static void mld_ifc_timer_expire(unsigned long data);
static void mld_ifc_event(struct inet6_dev *idev);
static void mld_add_delrec(struct inet6_dev *idev, struct ifmcaddr6 *pmc);
-static void mld_del_delrec(struct inet6_dev *idev, struct in6_addr *addr);
+static void mld_del_delrec(struct inet6_dev *idev, const struct in6_addr *addr);
static void mld_clear_delrec(struct inet6_dev *idev);
+static bool mld_in_v1_mode(const struct inet6_dev *idev);
static int sf_setstate(struct ifmcaddr6 *pmc);
static void sf_markstate(struct ifmcaddr6 *pmc);
static void ip6_mc_clear_src(struct ifmcaddr6 *pmc);
-static int ip6_mc_del_src(struct inet6_dev *idev, struct in6_addr *pmca,
- int sfmode, int sfcount, struct in6_addr *psfsrc,
+static int ip6_mc_del_src(struct inet6_dev *idev, const struct in6_addr *pmca,
+ int sfmode, int sfcount, const struct in6_addr *psfsrc,
int delta);
-static int ip6_mc_add_src(struct inet6_dev *idev, struct in6_addr *pmca,
- int sfmode, int sfcount, struct in6_addr *psfsrc,
+static int ip6_mc_add_src(struct inet6_dev *idev, const struct in6_addr *pmca,
+ int sfmode, int sfcount, const struct in6_addr *psfsrc,
int delta);
static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
struct inet6_dev *idev);
-
-#define IGMP6_UNSOLICITED_IVAL (10*HZ)
#define MLD_QRV_DEFAULT 2
+/* RFC3810, 9.2. Query Interval */
+#define MLD_QI_DEFAULT (125 * HZ)
+/* RFC3810, 9.3. Query Response Interval */
+#define MLD_QRI_DEFAULT (10 * HZ)
-#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)))
-
-#define MLDV2_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value))
-#define MLDV2_EXP(thresh, nbmant, nbexp, value) \
- ((value) < (thresh) ? (value) : \
- ((MLDV2_MASK(value, nbmant) | (1<<(nbmant))) << \
- (MLDV2_MASK((value) >> (nbmant), nbexp) + (nbexp))))
-
-#define MLDV2_MRC(value) MLDV2_EXP(0x8000, 12, 3, value)
+/* RFC3810, 8.1 Query Version Distinctions */
+#define MLD_V1_QUERY_LEN 24
+#define MLD_V2_QUERY_LEN_MIN 28
#define IPV6_MLD_MAX_MSF 64
@@ -172,6 +126,23 @@ int sysctl_mld_max_msf __read_mostly = IPV6_MLD_MAX_MSF;
* socket join on multicast group
*/
+#define for_each_pmc_rcu(np, pmc) \
+ for (pmc = rcu_dereference(np->ipv6_mc_list); \
+ pmc != NULL; \
+ pmc = rcu_dereference(pmc->next))
+
+static int unsolicited_report_interval(struct inet6_dev *idev)
+{
+ int iv;
+
+ if (mld_in_v1_mode(idev))
+ iv = idev->cnf.mldv1_unsolicited_report_interval;
+ else
+ iv = idev->cnf.mldv2_unsolicited_report_interval;
+
+ return iv > 0 ? iv : 1;
+}
+
int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
{
struct net_device *dev = NULL;
@@ -183,15 +154,15 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
if (!ipv6_addr_is_multicast(addr))
return -EINVAL;
- read_lock_bh(&ipv6_sk_mc_lock);
- for (mc_lst=np->ipv6_mc_list; mc_lst; mc_lst=mc_lst->next) {
+ rcu_read_lock();
+ for_each_pmc_rcu(np, mc_lst) {
if ((ifindex == 0 || mc_lst->ifindex == ifindex) &&
ipv6_addr_equal(&mc_lst->addr, addr)) {
- read_unlock_bh(&ipv6_sk_mc_lock);
+ rcu_read_unlock();
return -EADDRINUSE;
}
}
- read_unlock_bh(&ipv6_sk_mc_lock);
+ rcu_read_unlock();
mc_lst = sock_kmalloc(sk, sizeof(struct ipv6_mc_socklist), GFP_KERNEL);
@@ -199,20 +170,21 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
return -ENOMEM;
mc_lst->next = NULL;
- ipv6_addr_copy(&mc_lst->addr, addr);
+ mc_lst->addr = *addr;
+ rcu_read_lock();
if (ifindex == 0) {
struct rt6_info *rt;
rt = rt6_lookup(net, addr, NULL, 0, 0);
if (rt) {
- dev = rt->rt6i_dev;
- dev_hold(dev);
- dst_release(&rt->u.dst);
+ dev = rt->dst.dev;
+ ip6_rt_put(rt);
}
} else
- dev = dev_get_by_index(net, ifindex);
+ dev = dev_get_by_index_rcu(net, ifindex);
if (dev == NULL) {
+ rcu_read_unlock();
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
return -ENODEV;
}
@@ -229,17 +201,17 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
err = ipv6_dev_mc_inc(dev, addr);
if (err) {
+ rcu_read_unlock();
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
- dev_put(dev);
return err;
}
- write_lock_bh(&ipv6_sk_mc_lock);
+ spin_lock(&ipv6_sk_mc_lock);
mc_lst->next = np->ipv6_mc_list;
- np->ipv6_mc_list = mc_lst;
- write_unlock_bh(&ipv6_sk_mc_lock);
+ rcu_assign_pointer(np->ipv6_mc_list, mc_lst);
+ spin_unlock(&ipv6_sk_mc_lock);
- dev_put(dev);
+ rcu_read_unlock();
return 0;
}
@@ -250,76 +222,75 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const 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 ipv6_mc_socklist *mc_lst;
+ struct ipv6_mc_socklist __rcu **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) {
+ if (!ipv6_addr_is_multicast(addr))
+ return -EINVAL;
+
+ spin_lock(&ipv6_sk_mc_lock);
+ for (lnk = &np->ipv6_mc_list;
+ (mc_lst = rcu_dereference_protected(*lnk,
+ lockdep_is_held(&ipv6_sk_mc_lock))) !=NULL ;
+ lnk = &mc_lst->next) {
if ((ifindex == 0 || mc_lst->ifindex == ifindex) &&
ipv6_addr_equal(&mc_lst->addr, addr)) {
struct net_device *dev;
*lnk = mc_lst->next;
- write_unlock_bh(&ipv6_sk_mc_lock);
+ spin_unlock(&ipv6_sk_mc_lock);
- dev = dev_get_by_index(net, mc_lst->ifindex);
+ rcu_read_lock();
+ dev = dev_get_by_index_rcu(net, mc_lst->ifindex);
if (dev != NULL) {
- struct inet6_dev *idev = in6_dev_get(dev);
+ struct inet6_dev *idev = __in6_dev_get(dev);
(void) ip6_mc_leave_src(sk, mc_lst, idev);
- if (idev) {
+ if (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));
+ rcu_read_unlock();
+ atomic_sub(sizeof(*mc_lst), &sk->sk_omem_alloc);
+ kfree_rcu(mc_lst, rcu);
return 0;
}
}
- write_unlock_bh(&ipv6_sk_mc_lock);
+ spin_unlock(&ipv6_sk_mc_lock);
return -EADDRNOTAVAIL;
}
-static struct inet6_dev *ip6_mc_find_dev(struct net *net,
- struct in6_addr *group,
- int ifindex)
+/* called with rcu_read_lock() */
+static struct inet6_dev *ip6_mc_find_dev_rcu(struct net *net,
+ const struct in6_addr *group,
+ int ifindex)
{
struct net_device *dev = NULL;
struct inet6_dev *idev = NULL;
if (ifindex == 0) {
- struct rt6_info *rt;
+ struct rt6_info *rt = rt6_lookup(net, 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);
+ dev = rt->dst.dev;
+ ip6_rt_put(rt);
}
} else
- dev = dev_get_by_index(net, ifindex);
+ dev = dev_get_by_index_rcu(net, ifindex);
if (!dev)
- goto nodev;
- idev = in6_dev_get(dev);
+ return NULL;
+ idev = __in6_dev_get(dev);
if (!idev)
- goto release;
+ return NULL;
read_lock_bh(&idev->lock);
- if (idev->dead)
- goto unlock_release;
-
+ if (idev->dead) {
+ read_unlock_bh(&idev->lock);
+ return NULL;
+ }
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)
@@ -328,31 +299,35 @@ void ipv6_sock_mc_close(struct sock *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) {
+ if (!rcu_access_pointer(np->ipv6_mc_list))
+ return;
+
+ spin_lock(&ipv6_sk_mc_lock);
+ while ((mc_lst = rcu_dereference_protected(np->ipv6_mc_list,
+ lockdep_is_held(&ipv6_sk_mc_lock))) != NULL) {
struct net_device *dev;
np->ipv6_mc_list = mc_lst->next;
- write_unlock_bh(&ipv6_sk_mc_lock);
+ spin_unlock(&ipv6_sk_mc_lock);
- dev = dev_get_by_index(net, mc_lst->ifindex);
+ rcu_read_lock();
+ dev = dev_get_by_index_rcu(net, mc_lst->ifindex);
if (dev) {
- struct inet6_dev *idev = in6_dev_get(dev);
+ struct inet6_dev *idev = __in6_dev_get(dev);
(void) ip6_mc_leave_src(sk, mc_lst, idev);
- if (idev) {
+ if (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);
+ rcu_read_unlock();
- sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
+ atomic_sub(sizeof(*mc_lst), &sk->sk_omem_alloc);
+ kfree_rcu(mc_lst, rcu);
- write_lock_bh(&ipv6_sk_mc_lock);
+ spin_lock(&ipv6_sk_mc_lock);
}
- write_unlock_bh(&ipv6_sk_mc_lock);
+ spin_unlock(&ipv6_sk_mc_lock);
}
int ip6_mc_source(int add, int omode, struct sock *sk,
@@ -360,7 +335,6 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
{
struct in6_addr *source, *group;
struct ipv6_mc_socklist *pmc;
- struct net_device *dev;
struct inet6_dev *idev;
struct ipv6_pinfo *inet6 = inet6_sk(sk);
struct ip6_sf_socklist *psl;
@@ -376,15 +350,16 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
if (!ipv6_addr_is_multicast(group))
return -EINVAL;
- idev = ip6_mc_find_dev(net, group, pgsr->gsr_interface);
- if (!idev)
+ rcu_read_lock();
+ idev = ip6_mc_find_dev_rcu(net, group, pgsr->gsr_interface);
+ if (!idev) {
+ rcu_read_unlock();
return -ENODEV;
- dev = idev->dev;
+ }
err = -EADDRNOTAVAIL;
- read_lock_bh(&ipv6_sk_mc_lock);
- for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
+ for_each_pmc_rcu(inet6, pmc) {
if (pgsr->gsr_interface && pmc->ifindex != pgsr->gsr_interface)
continue;
if (ipv6_addr_equal(&pmc->addr, group))
@@ -407,7 +382,7 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
pmc->sfmode = omode;
}
- write_lock_bh(&pmc->sflock);
+ write_lock(&pmc->sflock);
pmclocked = 1;
psl = pmc->sflist;
@@ -416,8 +391,7 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
goto done; /* err = -EADDRNOTAVAIL */
rv = !0;
for (i=0; i<psl->sl_count; i++) {
- rv = memcmp(&psl->sl_addr[i], source,
- sizeof(struct in6_addr));
+ rv = !ipv6_addr_equal(&psl->sl_addr[i], source);
if (rv == 0)
break;
}
@@ -467,12 +441,10 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
}
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], source, sizeof(struct in6_addr));
- if (rv == 0)
- break;
+ rv = !ipv6_addr_equal(&psl->sl_addr[i], source);
+ if (rv == 0) /* There is an error in the address. */
+ goto done;
}
- 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] = *source;
@@ -482,11 +454,9 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
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);
+ write_unlock(&pmc->sflock);
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
- dev_put(dev);
+ rcu_read_unlock();
if (leavegroup)
return ipv6_sock_mc_drop(sk, pgsr->gsr_interface, group);
return err;
@@ -494,9 +464,8 @@ done:
int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf)
{
- struct in6_addr *group;
+ const struct in6_addr *group;
struct ipv6_mc_socklist *pmc;
- struct net_device *dev;
struct inet6_dev *idev;
struct ipv6_pinfo *inet6 = inet6_sk(sk);
struct ip6_sf_socklist *newpsl, *psl;
@@ -512,21 +481,22 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf)
gsf->gf_fmode != MCAST_EXCLUDE)
return -EINVAL;
- idev = ip6_mc_find_dev(net, group, gsf->gf_interface);
+ rcu_read_lock();
+ idev = ip6_mc_find_dev_rcu(net, group, gsf->gf_interface);
- if (!idev)
+ if (!idev) {
+ rcu_read_unlock();
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;
}
- for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
+ for_each_pmc_rcu(inet6, pmc) {
if (pmc->ifindex != gsf->gf_interface)
continue;
if (ipv6_addr_equal(&pmc->addr, group))
@@ -561,7 +531,7 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf)
(void) ip6_mc_add_src(idev, group, gsf->gf_fmode, 0, NULL, 0);
}
- write_lock_bh(&pmc->sflock);
+ write_lock(&pmc->sflock);
psl = pmc->sflist;
if (psl) {
(void) ip6_mc_del_src(idev, group, pmc->sfmode,
@@ -571,13 +541,11 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf)
(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);
+ write_unlock(&pmc->sflock);
err = 0;
done:
- read_unlock_bh(&ipv6_sk_mc_lock);
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
- dev_put(dev);
+ rcu_read_unlock();
if (leavegroup)
err = ipv6_sock_mc_drop(sk, gsf->gf_interface, group);
return err;
@@ -587,10 +555,9 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
struct group_filter __user *optval, int __user *optlen)
{
int err, i, count, copycount;
- struct in6_addr *group;
+ const struct in6_addr *group;
struct ipv6_mc_socklist *pmc;
struct inet6_dev *idev;
- struct net_device *dev;
struct ipv6_pinfo *inet6 = inet6_sk(sk);
struct ip6_sf_socklist *psl;
struct net *net = sock_net(sk);
@@ -600,12 +567,13 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
if (!ipv6_addr_is_multicast(group))
return -EINVAL;
- idev = ip6_mc_find_dev(net, group, gsf->gf_interface);
+ rcu_read_lock();
+ idev = ip6_mc_find_dev_rcu(net, group, gsf->gf_interface);
- if (!idev)
+ if (!idev) {
+ rcu_read_unlock();
return -ENODEV;
-
- dev = idev->dev;
+ }
err = -EADDRNOTAVAIL;
/*
@@ -614,7 +582,7 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
* so reading the list is safe.
*/
- for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
+ for_each_pmc_rcu(inet6, pmc) {
if (pmc->ifindex != gsf->gf_interface)
continue;
if (ipv6_addr_equal(group, &pmc->addr))
@@ -626,8 +594,7 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
psl = pmc->sflist;
count = psl ? psl->sl_count : 0;
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
- dev_put(dev);
+ rcu_read_unlock();
copycount = count < gsf->gf_numsrc ? count : gsf->gf_numsrc;
gsf->gf_numsrc = count;
@@ -653,27 +620,26 @@ int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
return 0;
done:
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
- dev_put(dev);
+ rcu_read_unlock();
return err;
}
-int inet6_mc_check(struct sock *sk, const struct in6_addr *mc_addr,
- const struct in6_addr *src_addr)
+bool 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;
struct ip6_sf_socklist *psl;
- int rv = 1;
+ bool rv = true;
- read_lock(&ipv6_sk_mc_lock);
- for (mc = np->ipv6_mc_list; mc; mc = mc->next) {
+ rcu_read_lock();
+ for_each_pmc_rcu(np, mc) {
if (ipv6_addr_equal(&mc->addr, mc_addr))
break;
}
if (!mc) {
- read_unlock(&ipv6_sk_mc_lock);
- return 1;
+ rcu_read_unlock();
+ return true;
}
read_lock(&mc->sflock);
psl = mc->sflist;
@@ -687,12 +653,12 @@ int inet6_mc_check(struct sock *sk, const struct in6_addr *mc_addr,
break;
}
if (mc->sfmode == MCAST_INCLUDE && i >= psl->sl_count)
- rv = 0;
+ rv = false;
if (mc->sfmode == MCAST_EXCLUDE && i < psl->sl_count)
- rv = 0;
+ rv = false;
}
read_unlock(&mc->sflock);
- read_unlock(&ipv6_sk_mc_lock);
+ rcu_read_unlock();
return rv;
}
@@ -710,18 +676,22 @@ static void igmp6_group_added(struct ifmcaddr6 *mc)
struct net_device *dev = mc->idev->dev;
char buf[MAX_ADDR_LEN];
+ if (IPV6_ADDR_MC_SCOPE(&mc->mca_addr) <
+ IPV6_ADDR_SCOPE_LINKLOCAL)
+ return;
+
spin_lock_bh(&mc->mca_lock);
if (!(mc->mca_flags&MAF_LOADED)) {
mc->mca_flags |= MAF_LOADED;
if (ndisc_mc_map(&mc->mca_addr, buf, dev, 0) == 0)
- dev_mc_add(dev, buf, dev->addr_len, 0);
+ dev_mc_add(dev, buf);
}
spin_unlock_bh(&mc->mca_lock);
if (!(dev->flags & IFF_UP) || (mc->mca_flags & MAF_NOREPORT))
return;
- if (MLD_V1_SEEN(mc->idev)) {
+ if (mld_in_v1_mode(mc->idev)) {
igmp6_join_group(mc);
return;
}
@@ -736,11 +706,15 @@ static void igmp6_group_dropped(struct ifmcaddr6 *mc)
struct net_device *dev = mc->idev->dev;
char buf[MAX_ADDR_LEN];
+ if (IPV6_ADDR_MC_SCOPE(&mc->mca_addr) <
+ IPV6_ADDR_SCOPE_LINKLOCAL)
+ return;
+
spin_lock_bh(&mc->mca_lock);
if (mc->mca_flags&MAF_LOADED) {
mc->mca_flags &= ~MAF_LOADED;
if (ndisc_mc_map(&mc->mca_addr, buf, dev, 0) == 0)
- dev_mc_delete(dev, buf, dev->addr_len, 0);
+ dev_mc_del(dev, buf);
}
if (mc->mca_flags & MAF_NOREPORT)
@@ -793,18 +767,18 @@ static void mld_add_delrec(struct inet6_dev *idev, struct ifmcaddr6 *im)
}
spin_unlock_bh(&im->mca_lock);
- write_lock_bh(&idev->mc_lock);
+ spin_lock_bh(&idev->mc_lock);
pmc->next = idev->mc_tomb;
idev->mc_tomb = pmc;
- write_unlock_bh(&idev->mc_lock);
+ spin_unlock_bh(&idev->mc_lock);
}
-static void mld_del_delrec(struct inet6_dev *idev, struct in6_addr *pmca)
+static void mld_del_delrec(struct inet6_dev *idev, const struct in6_addr *pmca)
{
struct ifmcaddr6 *pmc, *pmc_prev;
struct ip6_sf_list *psf, *psf_next;
- write_lock_bh(&idev->mc_lock);
+ spin_lock_bh(&idev->mc_lock);
pmc_prev = NULL;
for (pmc=idev->mc_tomb; pmc; pmc=pmc->next) {
if (ipv6_addr_equal(&pmc->mca_addr, pmca))
@@ -817,7 +791,8 @@ static void mld_del_delrec(struct inet6_dev *idev, struct in6_addr *pmca)
else
idev->mc_tomb = pmc->next;
}
- write_unlock_bh(&idev->mc_lock);
+ spin_unlock_bh(&idev->mc_lock);
+
if (pmc) {
for (psf=pmc->mca_tomb; psf; psf=psf_next) {
psf_next = psf->sf_next;
@@ -832,10 +807,10 @@ static void mld_clear_delrec(struct inet6_dev *idev)
{
struct ifmcaddr6 *pmc, *nextpmc;
- write_lock_bh(&idev->mc_lock);
+ spin_lock_bh(&idev->mc_lock);
pmc = idev->mc_tomb;
idev->mc_tomb = NULL;
- write_unlock_bh(&idev->mc_lock);
+ spin_unlock_bh(&idev->mc_lock);
for (; pmc; pmc = nextpmc) {
nextpmc = pmc->next;
@@ -870,6 +845,7 @@ int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr)
struct ifmcaddr6 *mc;
struct inet6_dev *idev;
+ /* we need to take a reference on idev */
idev = in6_dev_get(dev);
if (idev == NULL)
@@ -907,8 +883,8 @@ int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr)
setup_timer(&mc->mca_timer, igmp6_timer_handler, (unsigned long)mc);
- ipv6_addr_copy(&mc->mca_addr, addr);
- mc->idev = idev;
+ mc->mca_addr = *addr;
+ mc->idev = idev; /* (reference taken) */
mc->mca_users = 1;
/* mca_stamp should be updated upon changes */
mc->mca_cstamp = mc->mca_tstamp = jiffies;
@@ -963,57 +939,33 @@ int __ipv6_dev_mc_dec(struct inet6_dev *idev, const 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);
+ struct inet6_dev *idev;
int err;
- if (!idev)
- return -ENODEV;
-
- err = __ipv6_dev_mc_dec(idev, addr);
+ rcu_read_lock();
- in6_dev_put(idev);
+ idev = __in6_dev_get(dev);
+ if (!idev)
+ err = -ENODEV;
+ else
+ err = __ipv6_dev_mc_dec(idev, addr);
+ rcu_read_unlock();
return err;
}
/*
- * identify MLD packets for MLD filter exceptions
- */
-int ipv6_is_mld(struct sk_buff *skb, int nexthdr)
-{
- struct icmp6hdr *pic;
-
- if (nexthdr != IPPROTO_ICMPV6)
- return 0;
-
- if (!pskb_may_pull(skb, sizeof(struct icmp6hdr)))
- return 0;
-
- pic = icmp6_hdr(skb);
-
- switch (pic->icmp6_type) {
- case ICMPV6_MGM_QUERY:
- case ICMPV6_MGM_REPORT:
- case ICMPV6_MGM_REDUCTION:
- case ICMPV6_MLD2_REPORT:
- return 1;
- default:
- break;
- }
- return 0;
-}
-
-/*
* check if the interface/address pair is valid
*/
-int ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
- const struct in6_addr *src_addr)
+bool 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;
- int rv = 0;
+ bool rv = false;
- idev = in6_dev_get(dev);
+ rcu_read_lock();
+ idev = __in6_dev_get(dev);
if (idev) {
read_lock_bh(&idev->lock);
for (mc = idev->mc_list; mc; mc=mc->next) {
@@ -1037,31 +989,59 @@ int ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
rv = mc->mca_sfcount[MCAST_EXCLUDE] !=0;
spin_unlock_bh(&mc->mca_lock);
} else
- rv = 1; /* don't filter unspecified source */
+ rv = true; /* don't filter unspecified source */
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
}
+ rcu_read_unlock();
return rv;
}
static void mld_gq_start_timer(struct inet6_dev *idev)
{
- int tv = net_random() % idev->mc_maxdelay;
+ unsigned long tv = prandom_u32() % idev->mc_maxdelay;
idev->mc_gq_running = 1;
if (!mod_timer(&idev->mc_gq_timer, jiffies+tv+2))
in6_dev_hold(idev);
}
-static void mld_ifc_start_timer(struct inet6_dev *idev, int delay)
+static void mld_gq_stop_timer(struct inet6_dev *idev)
+{
+ idev->mc_gq_running = 0;
+ if (del_timer(&idev->mc_gq_timer))
+ __in6_dev_put(idev);
+}
+
+static void mld_ifc_start_timer(struct inet6_dev *idev, unsigned long delay)
{
- int tv = net_random() % delay;
+ unsigned long tv = prandom_u32() % delay;
if (!mod_timer(&idev->mc_ifc_timer, jiffies+tv+2))
in6_dev_hold(idev);
}
+static void mld_ifc_stop_timer(struct inet6_dev *idev)
+{
+ idev->mc_ifc_count = 0;
+ if (del_timer(&idev->mc_ifc_timer))
+ __in6_dev_put(idev);
+}
+
+static void mld_dad_start_timer(struct inet6_dev *idev, unsigned long delay)
+{
+ unsigned long tv = prandom_u32() % delay;
+
+ if (!mod_timer(&idev->mc_dad_timer, jiffies+tv+2))
+ in6_dev_hold(idev);
+}
+
+static void mld_dad_stop_timer(struct inet6_dev *idev)
+{
+ if (del_timer(&idev->mc_dad_timer))
+ __in6_dev_put(idev);
+}
+
/*
* IGMP handling (alias multicast ICMPv6 messages)
*/
@@ -1080,12 +1060,9 @@ static void igmp6_group_queried(struct ifmcaddr6 *ma, unsigned long resptime)
delay = ma->mca_timer.expires - jiffies;
}
- if (delay >= resptime) {
- if (resptime)
- delay = net_random() % resptime;
- else
- delay = 1;
- }
+ if (delay >= resptime)
+ delay = prandom_u32() % resptime;
+
ma->mca_timer.expires = jiffies + delay;
if (!mod_timer(&ma->mca_timer, jiffies + delay))
atomic_inc(&ma->mca_refcnt);
@@ -1093,8 +1070,8 @@ static void igmp6_group_queried(struct ifmcaddr6 *ma, unsigned long resptime)
}
/* mark EXCLUDE-mode sources */
-static int mld_xmarksources(struct ifmcaddr6 *pmc, int nsrcs,
- struct in6_addr *srcs)
+static bool mld_xmarksources(struct ifmcaddr6 *pmc, int nsrcs,
+ const struct in6_addr *srcs)
{
struct ip6_sf_list *psf;
int i, scount;
@@ -1105,10 +1082,10 @@ static int mld_xmarksources(struct ifmcaddr6 *pmc, int nsrcs,
break;
for (i=0; i<nsrcs; i++) {
/* skip inactive filters */
- if (pmc->mca_sfcount[MCAST_INCLUDE] ||
+ if (psf->sf_count[MCAST_INCLUDE] ||
pmc->mca_sfcount[MCAST_EXCLUDE] !=
psf->sf_count[MCAST_EXCLUDE])
- continue;
+ break;
if (ipv6_addr_equal(&srcs[i], &psf->sf_addr)) {
scount++;
break;
@@ -1117,12 +1094,12 @@ static int mld_xmarksources(struct ifmcaddr6 *pmc, int nsrcs,
}
pmc->mca_flags &= ~MAF_GSQUERY;
if (scount == nsrcs) /* all sources excluded */
- return 0;
- return 1;
+ return false;
+ return true;
}
-static int mld_marksources(struct ifmcaddr6 *pmc, int nsrcs,
- struct in6_addr *srcs)
+static bool mld_marksources(struct ifmcaddr6 *pmc, int nsrcs,
+ const struct in6_addr *srcs)
{
struct ip6_sf_list *psf;
int i, scount;
@@ -1146,23 +1123,176 @@ static int mld_marksources(struct ifmcaddr6 *pmc, int nsrcs,
}
if (!scount) {
pmc->mca_flags &= ~MAF_GSQUERY;
- return 0;
+ return false;
}
pmc->mca_flags |= MAF_GSQUERY;
- return 1;
+ return true;
+}
+
+static int mld_force_mld_version(const struct inet6_dev *idev)
+{
+ /* Normally, both are 0 here. If enforcement to a particular is
+ * being used, individual device enforcement will have a lower
+ * precedence over 'all' device (.../conf/all/force_mld_version).
+ */
+
+ if (dev_net(idev->dev)->ipv6.devconf_all->force_mld_version != 0)
+ return dev_net(idev->dev)->ipv6.devconf_all->force_mld_version;
+ else
+ return idev->cnf.force_mld_version;
+}
+
+static bool mld_in_v2_mode_only(const struct inet6_dev *idev)
+{
+ return mld_force_mld_version(idev) == 2;
+}
+
+static bool mld_in_v1_mode_only(const struct inet6_dev *idev)
+{
+ return mld_force_mld_version(idev) == 1;
+}
+
+static bool mld_in_v1_mode(const struct inet6_dev *idev)
+{
+ if (mld_in_v2_mode_only(idev))
+ return false;
+ if (mld_in_v1_mode_only(idev))
+ return true;
+ if (idev->mc_v1_seen && time_before(jiffies, idev->mc_v1_seen))
+ return true;
+
+ return false;
}
+static void mld_set_v1_mode(struct inet6_dev *idev)
+{
+ /* RFC3810, relevant sections:
+ * - 9.1. Robustness Variable
+ * - 9.2. Query Interval
+ * - 9.3. Query Response Interval
+ * - 9.12. Older Version Querier Present Timeout
+ */
+ unsigned long switchback;
+
+ switchback = (idev->mc_qrv * idev->mc_qi) + idev->mc_qri;
+
+ idev->mc_v1_seen = jiffies + switchback;
+}
+
+static void mld_update_qrv(struct inet6_dev *idev,
+ const struct mld2_query *mlh2)
+{
+ /* RFC3810, relevant sections:
+ * - 5.1.8. QRV (Querier's Robustness Variable)
+ * - 9.1. Robustness Variable
+ */
+
+ /* The value of the Robustness Variable MUST NOT be zero,
+ * and SHOULD NOT be one. Catch this here if we ever run
+ * into such a case in future.
+ */
+ WARN_ON(idev->mc_qrv == 0);
+
+ if (mlh2->mld2q_qrv > 0)
+ idev->mc_qrv = mlh2->mld2q_qrv;
+
+ if (unlikely(idev->mc_qrv < 2)) {
+ net_warn_ratelimited("IPv6: MLD: clamping QRV from %u to %u!\n",
+ idev->mc_qrv, MLD_QRV_DEFAULT);
+ idev->mc_qrv = MLD_QRV_DEFAULT;
+ }
+}
+
+static void mld_update_qi(struct inet6_dev *idev,
+ const struct mld2_query *mlh2)
+{
+ /* RFC3810, relevant sections:
+ * - 5.1.9. QQIC (Querier's Query Interval Code)
+ * - 9.2. Query Interval
+ * - 9.12. Older Version Querier Present Timeout
+ * (the [Query Interval] in the last Query received)
+ */
+ unsigned long mc_qqi;
+
+ if (mlh2->mld2q_qqic < 128) {
+ mc_qqi = mlh2->mld2q_qqic;
+ } else {
+ unsigned long mc_man, mc_exp;
+
+ mc_exp = MLDV2_QQIC_EXP(mlh2->mld2q_qqic);
+ mc_man = MLDV2_QQIC_MAN(mlh2->mld2q_qqic);
+
+ mc_qqi = (mc_man | 0x10) << (mc_exp + 3);
+ }
+
+ idev->mc_qi = mc_qqi * HZ;
+}
+
+static void mld_update_qri(struct inet6_dev *idev,
+ const struct mld2_query *mlh2)
+{
+ /* RFC3810, relevant sections:
+ * - 5.1.3. Maximum Response Code
+ * - 9.3. Query Response Interval
+ */
+ idev->mc_qri = msecs_to_jiffies(mldv2_mrc(mlh2));
+}
+
+static int mld_process_v1(struct inet6_dev *idev, struct mld_msg *mld,
+ unsigned long *max_delay)
+{
+ unsigned long mldv1_md;
+
+ /* Ignore v1 queries */
+ if (mld_in_v2_mode_only(idev))
+ return -EINVAL;
+
+ /* MLDv1 router present */
+ mldv1_md = ntohs(mld->mld_maxdelay);
+ *max_delay = max(msecs_to_jiffies(mldv1_md), 1UL);
+
+ mld_set_v1_mode(idev);
+
+ /* cancel MLDv2 report timer */
+ mld_gq_stop_timer(idev);
+ /* cancel the interface change timer */
+ mld_ifc_stop_timer(idev);
+ /* clear deleted report items */
+ mld_clear_delrec(idev);
+
+ return 0;
+}
+
+static int mld_process_v2(struct inet6_dev *idev, struct mld2_query *mld,
+ unsigned long *max_delay)
+{
+ /* hosts need to stay in MLDv1 mode, discard MLDv2 queries */
+ if (mld_in_v1_mode(idev))
+ return -EINVAL;
+
+ *max_delay = max(msecs_to_jiffies(mldv2_mrc(mld)), 1UL);
+
+ mld_update_qrv(idev, mld);
+ mld_update_qi(idev, mld);
+ mld_update_qri(idev, mld);
+
+ idev->mc_maxdelay = *max_delay;
+
+ return 0;
+}
+
+/* called with rcu_read_lock() */
int igmp6_event_query(struct sk_buff *skb)
{
struct mld2_query *mlh2 = NULL;
struct ifmcaddr6 *ma;
- struct in6_addr *group;
+ const struct in6_addr *group;
unsigned long max_delay;
struct inet6_dev *idev;
- struct icmp6hdr *hdr;
+ struct mld_msg *mld;
int group_type;
int mark = 0;
- int len;
+ int len, err;
if (!pskb_may_pull(skb, sizeof(struct in6_addr)))
return -EINVAL;
@@ -1171,78 +1301,66 @@ int igmp6_event_query(struct sk_buff *skb)
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(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL))
+ /* RFC3810 6.2
+ * Upon reception of an MLD message that contains a Query, the node
+ * checks if the source address of the message is a valid link-local
+ * address, if the Hop Limit is set to 1, and if the Router Alert
+ * option is present in the Hop-By-Hop Options header of the IPv6
+ * packet. If any of these checks fails, the packet is dropped.
+ */
+ if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL) ||
+ ipv6_hdr(skb)->hop_limit != 1 ||
+ !(IP6CB(skb)->flags & IP6SKB_ROUTERALERT) ||
+ IP6CB(skb)->ra != htons(IPV6_OPT_ROUTERALERT_MLD))
return -EINVAL;
- idev = in6_dev_get(skb->dev);
-
+ idev = __in6_dev_get(skb->dev);
if (idev == NULL)
return 0;
- hdr = icmp6_hdr(skb);
- group = (struct in6_addr *) (hdr + 1);
+ mld = (struct mld_msg *)icmp6_hdr(skb);
+ group = &mld->mld_mca;
group_type = ipv6_addr_type(group);
if (group_type != IPV6_ADDR_ANY &&
- !(group_type&IPV6_ADDR_MULTICAST)) {
- in6_dev_put(idev);
+ !(group_type&IPV6_ADDR_MULTICAST))
return -EINVAL;
- }
-
- if (len == 24) {
- int switchback;
- /* MLDv1 router present */
-
- /* Translate milliseconds to jiffies */
- max_delay = (ntohs(hdr->icmp6_maxdelay)*HZ)/1000;
- switchback = (idev->mc_qrv + 1) * max_delay;
- idev->mc_v1_seen = jiffies + switchback;
-
- /* cancel the interface change timer */
- idev->mc_ifc_count = 0;
- if (del_timer(&idev->mc_ifc_timer))
- __in6_dev_put(idev);
- /* clear deleted report items */
- mld_clear_delrec(idev);
- } else if (len >= 28) {
+ if (len == MLD_V1_QUERY_LEN) {
+ err = mld_process_v1(idev, mld, &max_delay);
+ if (err < 0)
+ return err;
+ } else if (len >= MLD_V2_QUERY_LEN_MIN) {
int srcs_offset = sizeof(struct mld2_query) -
sizeof(struct icmp6hdr);
- if (!pskb_may_pull(skb, srcs_offset)) {
- in6_dev_put(idev);
+
+ if (!pskb_may_pull(skb, srcs_offset))
return -EINVAL;
- }
+
mlh2 = (struct mld2_query *)skb_transport_header(skb);
- max_delay = (MLDV2_MRC(ntohs(mlh2->mrc))*HZ)/1000;
- if (!max_delay)
- max_delay = 1;
- idev->mc_maxdelay = max_delay;
- if (mlh2->qrv)
- idev->mc_qrv = mlh2->qrv;
+
+ err = mld_process_v2(idev, mlh2, &max_delay);
+ if (err < 0)
+ return err;
+
if (group_type == IPV6_ADDR_ANY) { /* general query */
- if (mlh2->nsrcs) {
- in6_dev_put(idev);
+ if (mlh2->mld2q_nsrcs)
return -EINVAL; /* no sources allowed */
- }
+
mld_gq_start_timer(idev);
- in6_dev_put(idev);
return 0;
}
/* mark sources to include, if group & source-specific */
- if (mlh2->nsrcs != 0) {
+ if (mlh2->mld2q_nsrcs != 0) {
if (!pskb_may_pull(skb, srcs_offset +
- ntohs(mlh2->nsrcs) * sizeof(struct in6_addr))) {
- in6_dev_put(idev);
+ ntohs(mlh2->mld2q_nsrcs) * sizeof(struct in6_addr)))
return -EINVAL;
- }
+
mlh2 = (struct mld2_query *)skb_transport_header(skb);
mark = 1;
}
- } else {
- in6_dev_put(idev);
+ } else
return -EINVAL;
- }
read_lock_bh(&idev->lock);
if (group_type == IPV6_ADDR_ANY) {
@@ -1268,25 +1386,23 @@ int igmp6_event_query(struct sk_buff *skb)
ma->mca_flags &= ~MAF_GSQUERY;
}
if (!(ma->mca_flags & MAF_GSQUERY) ||
- mld_marksources(ma, ntohs(mlh2->nsrcs), mlh2->srcs))
+ mld_marksources(ma, ntohs(mlh2->mld2q_nsrcs), mlh2->mld2q_srcs))
igmp6_group_queried(ma, max_delay);
spin_unlock_bh(&ma->mca_lock);
break;
}
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
return 0;
}
-
+/* called with rcu_read_lock() */
int igmp6_event_report(struct sk_buff *skb)
{
struct ifmcaddr6 *ma;
- struct in6_addr *addrp;
struct inet6_dev *idev;
- struct icmp6hdr *hdr;
+ struct mld_msg *mld;
int addr_type;
/* Our own report looped back. Ignore it. */
@@ -1298,10 +1414,10 @@ int igmp6_event_report(struct sk_buff *skb)
skb->pkt_type != PACKET_BROADCAST)
return 0;
- if (!pskb_may_pull(skb, sizeof(struct in6_addr)))
+ if (!pskb_may_pull(skb, sizeof(*mld) - sizeof(struct icmp6hdr)))
return -EINVAL;
- hdr = icmp6_hdr(skb);
+ mld = (struct mld_msg *)icmp6_hdr(skb);
/* Drop reports with not link local source */
addr_type = ipv6_addr_type(&ipv6_hdr(skb)->saddr);
@@ -1309,9 +1425,7 @@ int igmp6_event_report(struct sk_buff *skb)
!(addr_type&IPV6_ADDR_LINKLOCAL))
return -EINVAL;
- addrp = (struct in6_addr *) (hdr + 1);
-
- idev = in6_dev_get(skb->dev);
+ idev = __in6_dev_get(skb->dev);
if (idev == NULL)
return -ENODEV;
@@ -1321,7 +1435,7 @@ int igmp6_event_report(struct sk_buff *skb)
read_lock_bh(&idev->lock);
for (ma = idev->mc_list; ma; ma=ma->next) {
- if (ipv6_addr_equal(&ma->mca_addr, addrp)) {
+ if (ipv6_addr_equal(&ma->mca_addr, &mld->mld_mca)) {
spin_lock(&ma->mca_lock);
if (del_timer(&ma->mca_timer))
atomic_dec(&ma->mca_refcnt);
@@ -1331,21 +1445,20 @@ int igmp6_event_report(struct sk_buff *skb)
}
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
return 0;
}
-static int is_in(struct ifmcaddr6 *pmc, struct ip6_sf_list *psf, int type,
- int gdeleted, int sdeleted)
+static bool is_in(struct ifmcaddr6 *pmc, struct ip6_sf_list *psf, int type,
+ int gdeleted, int sdeleted)
{
switch (type) {
case MLD2_MODE_IS_INCLUDE:
case MLD2_MODE_IS_EXCLUDE:
if (gdeleted || sdeleted)
- return 0;
+ return false;
if (!((pmc->mca_flags & MAF_GSQUERY) && !psf->sf_gsresp)) {
if (pmc->mca_sfmode == MCAST_INCLUDE)
- return 1;
+ return true;
/* don't include if this source is excluded
* in all filters
*/
@@ -1354,29 +1467,29 @@ static int is_in(struct ifmcaddr6 *pmc, struct ip6_sf_list *psf, int type,
return pmc->mca_sfcount[MCAST_EXCLUDE] ==
psf->sf_count[MCAST_EXCLUDE];
}
- return 0;
+ return false;
case MLD2_CHANGE_TO_INCLUDE:
if (gdeleted || sdeleted)
- return 0;
+ return false;
return psf->sf_count[MCAST_INCLUDE] != 0;
case MLD2_CHANGE_TO_EXCLUDE:
if (gdeleted || sdeleted)
- return 0;
+ return false;
if (pmc->mca_sfcount[MCAST_EXCLUDE] == 0 ||
psf->sf_count[MCAST_INCLUDE])
- return 0;
+ return false;
return pmc->mca_sfcount[MCAST_EXCLUDE] ==
psf->sf_count[MCAST_EXCLUDE];
case MLD2_ALLOW_NEW_SOURCES:
if (gdeleted || !psf->sf_crcount)
- return 0;
+ return false;
return (pmc->mca_sfmode == MCAST_INCLUDE) ^ sdeleted;
case MLD2_BLOCK_OLD_SOURCES:
if (pmc->mca_sfmode == MCAST_INCLUDE)
return gdeleted || (psf->sf_crcount && sdeleted);
return psf->sf_crcount && !gdeleted && !sdeleted;
}
- return 0;
+ return false;
}
static int
@@ -1393,28 +1506,60 @@ mld_scount(struct ifmcaddr6 *pmc, int type, int gdeleted, int sdeleted)
return scount;
}
-static struct sk_buff *mld_newpack(struct net_device *dev, int size)
+static void ip6_mc_hdr(struct sock *sk, struct sk_buff *skb,
+ struct net_device *dev,
+ const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
+ int proto, int len)
+{
+ struct ipv6hdr *hdr;
+
+ skb->protocol = htons(ETH_P_IPV6);
+ skb->dev = dev;
+
+ skb_reset_network_header(skb);
+ skb_put(skb, sizeof(struct ipv6hdr));
+ hdr = ipv6_hdr(skb);
+
+ ip6_flow_hdr(hdr, 0, 0);
+
+ hdr->payload_len = htons(len);
+ hdr->nexthdr = proto;
+ hdr->hop_limit = inet6_sk(sk)->hop_limit;
+
+ hdr->saddr = *saddr;
+ hdr->daddr = *daddr;
+}
+
+static struct sk_buff *mld_newpack(struct inet6_dev *idev, int size)
{
+ struct net_device *dev = idev->dev;
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 hlen = LL_RESERVED_SPACE(dev);
+ int tlen = dev->needed_tailroom;
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_ALLOCATED_SPACE(dev), 1, &err);
+ size += hlen + tlen;
+ /* limit our allocations to order-0 page */
+ size = min_t(int, size, SKB_MAX_ORDER(0, 0));
+ skb = sock_alloc_send_skb(sk, size, 1, &err);
if (!skb)
return NULL;
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
+ skb->priority = TC_PRIO_CONTROL;
+ skb_reserve(skb, hlen);
- if (ipv6_get_lladdr(dev, &addr_buf, IFA_F_TENTATIVE)) {
+ if (__ipv6_get_lladdr(idev, &addr_buf, IFA_F_TENTATIVE)) {
/* <draft-ietf-magma-mld-source-05.txt>:
* use unspecified address as the source address
* when a valid link-local address is not available.
@@ -1423,18 +1568,18 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
} else
saddr = &addr_buf;
- ip6_nd_hdr(sk, skb, dev, saddr, &mld2_all_mcr, NEXTHDR_HOP, 0);
+ ip6_mc_hdr(sk, skb, dev, saddr, &mld2_all_mcr, NEXTHDR_HOP, 0);
memcpy(skb_put(skb, sizeof(ra)), ra, sizeof(ra));
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;
- pmr->resv2 = 0;
- pmr->ngrec = 0;
+ pmr->mld2r_type = ICMPV6_MLD2_REPORT;
+ pmr->mld2r_resv1 = 0;
+ pmr->mld2r_cksum = 0;
+ pmr->mld2r_resv2 = 0;
+ pmr->mld2r_ngrec = 0;
return skb;
}
@@ -1444,52 +1589,54 @@ static void mld_sendpack(struct sk_buff *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 inet6_dev *idev;
struct net *net = dev_net(skb->dev);
int err;
- struct flowi fl;
+ struct flowi6 fl6;
struct dst_entry *dst;
+ rcu_read_lock();
+ idev = __in6_dev_get(skb->dev);
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;
+ payload_len = (skb_tail_pointer(skb) - skb_network_header(skb)) -
+ sizeof(*pip6);
+ mldlen = skb_tail_pointer(skb) - skb_transport_header(skb);
pip6->payload_len = htons(payload_len);
- pmr->csum = csum_ipv6_magic(&pip6->saddr, &pip6->daddr, mldlen,
- 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;
- }
+ pmr->mld2r_cksum = csum_ipv6_magic(&pip6->saddr, &pip6->daddr, mldlen,
+ IPPROTO_ICMPV6,
+ csum_partial(skb_transport_header(skb),
+ mldlen, 0));
- icmpv6_flow_init(net->ipv6.igmp_sk, &fl, ICMPV6_MLD2_REPORT,
+ icmpv6_flow_init(net->ipv6.igmp_sk, &fl6, ICMPV6_MLD2_REPORT,
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
skb->dev->ifindex);
+ dst = icmp6_dst_alloc(skb->dev, &fl6);
- err = xfrm_lookup(net, &dst, &fl, NULL, 0);
+ err = 0;
+ if (IS_ERR(dst)) {
+ err = PTR_ERR(dst);
+ dst = NULL;
+ }
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,
+ err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
dst_output);
out:
if (!err) {
- 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_BH(net, idev, IPSTATS_MIB_OUTDISCARDS);
+ ICMP6MSGOUT_INC_STATS(net, idev, ICMPV6_MLD2_REPORT);
+ ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
+ IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, payload_len);
+ } else {
+ IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
+ }
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ rcu_read_unlock();
return;
err_out:
@@ -1510,7 +1657,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
struct mld2_grec *pgr;
if (!skb)
- skb = mld_newpack(dev, dev->mtu);
+ skb = mld_newpack(pmc->idev, dev->mtu);
if (!skb)
return NULL;
pgr = (struct mld2_grec *)skb_put(skb, sizeof(struct mld2_grec));
@@ -1519,7 +1666,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
pgr->grec_nsrcs = 0;
pgr->grec_mca = pmc->mca_addr; /* structure copy */
pmr = (struct mld2_report *)skb_transport_header(skb);
- pmr->ngrec = htons(ntohs(pmr->ngrec)+1);
+ pmr->mld2r_ngrec = htons(ntohs(pmr->mld2r_ngrec)+1);
*ppgr = pgr;
return skb;
}
@@ -1528,9 +1675,10 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
skb_tailroom(skb)) : 0)
static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
- int type, int gdeleted, int sdeleted)
+ int type, int gdeleted, int sdeleted, int crsend)
{
- struct net_device *dev = pmc->idev->dev;
+ struct inet6_dev *idev = pmc->idev;
+ struct net_device *dev = idev->dev;
struct mld2_report *pmr;
struct mld2_grec *pgr = NULL;
struct ip6_sf_list *psf, *psf_next, *psf_prev, **psf_list;
@@ -1555,11 +1703,11 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
/* EX and TO_EX get a fresh packet, if needed */
if (truncate) {
- if (pmr && pmr->ngrec &&
+ if (pmr && pmr->mld2r_ngrec &&
AVAILABLE(skb) < grec_size(pmc, type, gdeleted, sdeleted)) {
if (skb)
mld_sendpack(skb);
- skb = mld_newpack(dev, dev->mtu);
+ skb = mld_newpack(idev, dev->mtu);
}
}
first = 1;
@@ -1586,7 +1734,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
pgr->grec_nsrcs = htons(scount);
if (skb)
mld_sendpack(skb);
- skb = mld_newpack(dev, dev->mtu);
+ skb = mld_newpack(idev, dev->mtu);
first = 1;
scount = 0;
}
@@ -1619,7 +1767,7 @@ empty_source:
if (type == MLD2_ALLOW_NEW_SOURCES ||
type == MLD2_BLOCK_OLD_SOURCES)
return skb;
- if (pmc->mca_crcount || isquery) {
+ if (pmc->mca_crcount || isquery || crsend) {
/* make sure we have room for group header */
if (skb && AVAILABLE(skb) < sizeof(struct mld2_grec)) {
mld_sendpack(skb);
@@ -1641,8 +1789,8 @@ static void mld_send_report(struct inet6_dev *idev, struct ifmcaddr6 *pmc)
struct sk_buff *skb = NULL;
int type;
+ read_lock_bh(&idev->lock);
if (!pmc) {
- read_lock_bh(&idev->lock);
for (pmc=idev->mc_list; pmc; pmc=pmc->next) {
if (pmc->mca_flags & MAF_NOREPORT)
continue;
@@ -1651,19 +1799,19 @@ static void mld_send_report(struct inet6_dev *idev, struct ifmcaddr6 *pmc)
type = MLD2_MODE_IS_EXCLUDE;
else
type = MLD2_MODE_IS_INCLUDE;
- skb = add_grec(skb, pmc, type, 0, 0);
+ skb = add_grec(skb, pmc, type, 0, 0, 0);
spin_unlock_bh(&pmc->mca_lock);
}
- read_unlock_bh(&idev->lock);
} else {
spin_lock_bh(&pmc->mca_lock);
if (pmc->mca_sfcount[MCAST_EXCLUDE])
type = MLD2_MODE_IS_EXCLUDE;
else
type = MLD2_MODE_IS_INCLUDE;
- skb = add_grec(skb, pmc, type, 0, 0);
+ skb = add_grec(skb, pmc, type, 0, 0, 0);
spin_unlock_bh(&pmc->mca_lock);
}
+ read_unlock_bh(&idev->lock);
if (skb)
mld_sendpack(skb);
}
@@ -1696,7 +1844,7 @@ static void mld_send_cr(struct inet6_dev *idev)
int type, dtype;
read_lock_bh(&idev->lock);
- write_lock_bh(&idev->mc_lock);
+ spin_lock(&idev->mc_lock);
/* deleted MCA's */
pmc_prev = NULL;
@@ -1705,13 +1853,13 @@ static void mld_send_cr(struct inet6_dev *idev)
if (pmc->mca_sfmode == MCAST_INCLUDE) {
type = MLD2_BLOCK_OLD_SOURCES;
dtype = MLD2_BLOCK_OLD_SOURCES;
- skb = add_grec(skb, pmc, type, 1, 0);
- skb = add_grec(skb, pmc, dtype, 1, 1);
+ skb = add_grec(skb, pmc, type, 1, 0, 0);
+ skb = add_grec(skb, pmc, dtype, 1, 1, 0);
}
if (pmc->mca_crcount) {
if (pmc->mca_sfmode == MCAST_EXCLUDE) {
type = MLD2_CHANGE_TO_INCLUDE;
- skb = add_grec(skb, pmc, type, 1, 0);
+ skb = add_grec(skb, pmc, type, 1, 0, 0);
}
pmc->mca_crcount--;
if (pmc->mca_crcount == 0) {
@@ -1730,7 +1878,7 @@ static void mld_send_cr(struct inet6_dev *idev)
} else
pmc_prev = pmc;
}
- write_unlock_bh(&idev->mc_lock);
+ spin_unlock(&idev->mc_lock);
/* change recs */
for (pmc=idev->mc_list; pmc; pmc=pmc->next) {
@@ -1742,8 +1890,8 @@ static void mld_send_cr(struct inet6_dev *idev)
type = MLD2_ALLOW_NEW_SOURCES;
dtype = MLD2_BLOCK_OLD_SOURCES;
}
- skb = add_grec(skb, pmc, type, 0, 0);
- skb = add_grec(skb, pmc, dtype, 0, 1); /* deleted sources */
+ skb = add_grec(skb, pmc, type, 0, 0, 0);
+ skb = add_grec(skb, pmc, dtype, 0, 1, 0); /* deleted sources */
/* filter mode changes */
if (pmc->mca_crcount) {
@@ -1751,7 +1899,7 @@ static void mld_send_cr(struct inet6_dev *idev)
type = MLD2_CHANGE_TO_EXCLUDE;
else
type = MLD2_CHANGE_TO_INCLUDE;
- skb = add_grec(skb, pmc, type, 0, 0);
+ skb = add_grec(skb, pmc, type, 0, 0, 0);
pmc->mca_crcount--;
}
spin_unlock_bh(&pmc->mca_lock);
@@ -1768,15 +1916,16 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
struct sock *sk = net->ipv6.igmp_sk;
struct inet6_dev *idev;
struct sk_buff *skb;
- struct icmp6hdr *hdr;
+ struct mld_msg *hdr;
const struct in6_addr *snd_addr, *saddr;
- struct in6_addr *addrp;
struct in6_addr addr_buf;
+ int hlen = LL_RESERVED_SPACE(dev);
+ int tlen = dev->needed_tailroom;
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 flowi6 fl6;
struct dst_entry *dst;
if (type == ICMPV6_MGM_REDUCTION)
@@ -1793,7 +1942,7 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
IPSTATS_MIB_OUT, full_len);
rcu_read_unlock();
- skb = sock_alloc_send_skb(sk, LL_ALLOCATED_SPACE(dev) + full_len, 1, &err);
+ skb = sock_alloc_send_skb(sk, hlen + tlen + full_len, 1, &err);
if (skb == NULL) {
rcu_read_lock();
@@ -1802,8 +1951,8 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
rcu_read_unlock();
return;
}
-
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
+ skb->priority = TC_PRIO_CONTROL;
+ skb_reserve(skb, hlen);
if (ipv6_get_lladdr(dev, &addr_buf, IFA_F_TENTATIVE)) {
/* <draft-ietf-magma-mld-source-05.txt>:
@@ -1814,39 +1963,33 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
} else
saddr = &addr_buf;
- ip6_nd_hdr(sk, skb, dev, saddr, snd_addr, NEXTHDR_HOP, payload_len);
+ ip6_mc_hdr(sk, skb, dev, saddr, snd_addr, NEXTHDR_HOP, payload_len);
memcpy(skb_put(skb, sizeof(ra)), ra, sizeof(ra));
- hdr = (struct icmp6hdr *) skb_put(skb, sizeof(struct icmp6hdr));
- memset(hdr, 0, sizeof(struct icmp6hdr));
- hdr->icmp6_type = type;
-
- addrp = (struct in6_addr *) skb_put(skb, sizeof(struct in6_addr));
- ipv6_addr_copy(addrp, addr);
+ hdr = (struct mld_msg *) skb_put(skb, sizeof(struct mld_msg));
+ memset(hdr, 0, sizeof(struct mld_msg));
+ hdr->mld_type = type;
+ hdr->mld_mca = *addr;
- hdr->icmp6_cksum = csum_ipv6_magic(saddr, snd_addr, len,
- IPPROTO_ICMPV6,
- csum_partial(hdr, len, 0));
-
- idev = in6_dev_get(skb->dev);
+ hdr->mld_cksum = csum_ipv6_magic(saddr, snd_addr, len,
+ IPPROTO_ICMPV6,
+ csum_partial(hdr, len, 0));
- dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
- if (!dst) {
- err = -ENOMEM;
- goto err_out;
- }
+ rcu_read_lock();
+ idev = __in6_dev_get(skb->dev);
- icmpv6_flow_init(sk, &fl, type,
+ icmpv6_flow_init(sk, &fl6, type,
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
skb->dev->ifindex);
-
- err = xfrm_lookup(net, &dst, &fl, NULL, 0);
- if (err)
+ dst = icmp6_dst_alloc(skb->dev, &fl6);
+ if (IS_ERR(dst)) {
+ err = PTR_ERR(dst);
goto err_out;
+ }
skb_dst_set(skb, dst);
- err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
+ err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL, skb->dev,
dst_output);
out:
if (!err) {
@@ -1856,8 +1999,7 @@ out:
} else
IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ rcu_read_unlock();
return;
err_out:
@@ -1865,8 +2007,57 @@ err_out:
goto out;
}
+static void mld_send_initial_cr(struct inet6_dev *idev)
+{
+ struct sk_buff *skb;
+ struct ifmcaddr6 *pmc;
+ int type;
+
+ if (mld_in_v1_mode(idev))
+ return;
+
+ skb = NULL;
+ read_lock_bh(&idev->lock);
+ for (pmc=idev->mc_list; pmc; pmc=pmc->next) {
+ spin_lock_bh(&pmc->mca_lock);
+ if (pmc->mca_sfcount[MCAST_EXCLUDE])
+ type = MLD2_CHANGE_TO_EXCLUDE;
+ else
+ type = MLD2_CHANGE_TO_INCLUDE;
+ skb = add_grec(skb, pmc, type, 0, 0, 1);
+ spin_unlock_bh(&pmc->mca_lock);
+ }
+ read_unlock_bh(&idev->lock);
+ if (skb)
+ mld_sendpack(skb);
+}
+
+void ipv6_mc_dad_complete(struct inet6_dev *idev)
+{
+ idev->mc_dad_count = idev->mc_qrv;
+ if (idev->mc_dad_count) {
+ mld_send_initial_cr(idev);
+ idev->mc_dad_count--;
+ if (idev->mc_dad_count)
+ mld_dad_start_timer(idev, idev->mc_maxdelay);
+ }
+}
+
+static void mld_dad_timer_expire(unsigned long data)
+{
+ struct inet6_dev *idev = (struct inet6_dev *)data;
+
+ mld_send_initial_cr(idev);
+ if (idev->mc_dad_count) {
+ idev->mc_dad_count--;
+ if (idev->mc_dad_count)
+ mld_dad_start_timer(idev, idev->mc_maxdelay);
+ }
+ in6_dev_put(idev);
+}
+
static int ip6_mc_del1_src(struct ifmcaddr6 *pmc, int sfmode,
- struct in6_addr *psfsrc)
+ const struct in6_addr *psfsrc)
{
struct ip6_sf_list *psf, *psf_prev;
int rv = 0;
@@ -1891,7 +2082,7 @@ static int ip6_mc_del1_src(struct ifmcaddr6 *pmc, int sfmode,
else
pmc->mca_sources = psf->sf_next;
if (psf->sf_oldin && !(pmc->mca_flags & MAF_NOREPORT) &&
- !MLD_V1_SEEN(idev)) {
+ !mld_in_v1_mode(idev)) {
psf->sf_crcount = idev->mc_qrv;
psf->sf_next = pmc->mca_tomb;
pmc->mca_tomb = psf;
@@ -1902,8 +2093,8 @@ static int ip6_mc_del1_src(struct ifmcaddr6 *pmc, int sfmode,
return rv;
}
-static int ip6_mc_del_src(struct inet6_dev *idev, struct in6_addr *pmca,
- int sfmode, int sfcount, struct in6_addr *psfsrc,
+static int ip6_mc_del_src(struct inet6_dev *idev, const struct in6_addr *pmca,
+ int sfmode, int sfcount, const struct in6_addr *psfsrc,
int delta)
{
struct ifmcaddr6 *pmc;
@@ -1963,7 +2154,7 @@ static int ip6_mc_del_src(struct inet6_dev *idev, struct in6_addr *pmca,
* Add multicast single-source filter to the interface list
*/
static int ip6_mc_add1_src(struct ifmcaddr6 *pmc, int sfmode,
- struct in6_addr *psfsrc, int delta)
+ const struct in6_addr *psfsrc)
{
struct ip6_sf_list *psf, *psf_prev;
@@ -2048,8 +2239,7 @@ static int sf_setstate(struct ifmcaddr6 *pmc)
&psf->sf_addr))
break;
if (!dpsf) {
- dpsf = (struct ip6_sf_list *)
- kmalloc(sizeof(*dpsf), GFP_ATOMIC);
+ dpsf = kmalloc(sizeof(*dpsf), GFP_ATOMIC);
if (!dpsf)
continue;
*dpsf = *psf;
@@ -2067,8 +2257,8 @@ static int sf_setstate(struct ifmcaddr6 *pmc)
/*
* Add multicast source filter list to the interface list
*/
-static int ip6_mc_add_src(struct inet6_dev *idev, struct in6_addr *pmca,
- int sfmode, int sfcount, struct in6_addr *psfsrc,
+static int ip6_mc_add_src(struct inet6_dev *idev, const struct in6_addr *pmca,
+ int sfmode, int sfcount, const struct in6_addr *psfsrc,
int delta)
{
struct ifmcaddr6 *pmc;
@@ -2095,7 +2285,7 @@ static int ip6_mc_add_src(struct inet6_dev *idev, struct in6_addr *pmca,
pmc->mca_sfcount[sfmode]++;
err = 0;
for (i=0; i<sfcount; i++) {
- err = ip6_mc_add1_src(pmc, sfmode, &psfsrc[i], delta);
+ err = ip6_mc_add1_src(pmc, sfmode, &psfsrc[i]);
if (err)
break;
}
@@ -2105,7 +2295,7 @@ static int ip6_mc_add_src(struct inet6_dev *idev, struct in6_addr *pmca,
if (!delta)
pmc->mca_sfcount[sfmode]--;
for (j=0; j<i; j++)
- (void) ip6_mc_del1_src(pmc, sfmode, &psfsrc[i]);
+ ip6_mc_del1_src(pmc, sfmode, &psfsrc[j]);
} else if (isexclude != (pmc->mca_sfcount[MCAST_EXCLUDE] != 0)) {
struct ip6_sf_list *psf;
@@ -2157,7 +2347,7 @@ static void igmp6_join_group(struct ifmcaddr6 *ma)
igmp6_send(&ma->mca_addr, ma->idev->dev, ICMPV6_MGM_REPORT);
- delay = net_random() % IGMP6_UNSOLICITED_IVAL;
+ delay = prandom_u32() % unsolicited_report_interval(ma->idev);
spin_lock_bh(&ma->mca_lock);
if (del_timer(&ma->mca_timer)) {
@@ -2192,7 +2382,7 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
static void igmp6_leave_group(struct ifmcaddr6 *ma)
{
- if (MLD_V1_SEEN(ma->idev)) {
+ if (mld_in_v1_mode(ma->idev)) {
if (ma->mca_flags & MAF_LAST_REPORTER)
igmp6_send(&ma->mca_addr, ma->idev->dev,
ICMPV6_MGM_REDUCTION);
@@ -2208,7 +2398,7 @@ static void mld_gq_timer_expire(unsigned long data)
idev->mc_gq_running = 0;
mld_send_report(idev, NULL);
- __in6_dev_put(idev);
+ in6_dev_put(idev);
}
static void mld_ifc_timer_expire(unsigned long data)
@@ -2221,12 +2411,12 @@ static void mld_ifc_timer_expire(unsigned long data)
if (idev->mc_ifc_count)
mld_ifc_start_timer(idev, idev->mc_maxdelay);
}
- __in6_dev_put(idev);
+ in6_dev_put(idev);
}
static void mld_ifc_event(struct inet6_dev *idev)
{
- if (MLD_V1_SEEN(idev))
+ if (mld_in_v1_mode(idev))
return;
idev->mc_ifc_count = idev->mc_qrv;
mld_ifc_start_timer(idev, 1);
@@ -2237,7 +2427,7 @@ static void igmp6_timer_handler(unsigned long data)
{
struct ifmcaddr6 *ma = (struct ifmcaddr6 *) data;
- if (MLD_V1_SEEN(ma->idev))
+ if (mld_in_v1_mode(ma->idev))
igmp6_send(&ma->mca_addr, ma->idev->dev, ICMPV6_MGM_REPORT);
else
mld_send_report(ma->idev, ma);
@@ -2277,12 +2467,9 @@ void ipv6_mc_down(struct inet6_dev *idev)
/* Withdraw multicast list */
read_lock_bh(&idev->lock);
- idev->mc_ifc_count = 0;
- if (del_timer(&idev->mc_ifc_timer))
- __in6_dev_put(idev);
- idev->mc_gq_running = 0;
- if (del_timer(&idev->mc_gq_timer))
- __in6_dev_put(idev);
+ mld_ifc_stop_timer(idev);
+ mld_gq_stop_timer(idev);
+ mld_dad_stop_timer(idev);
for (i = idev->mc_list; i; i=i->next)
igmp6_group_dropped(i);
@@ -2311,7 +2498,7 @@ void ipv6_mc_up(struct inet6_dev *idev)
void ipv6_mc_init_dev(struct inet6_dev *idev)
{
write_lock_bh(&idev->lock);
- rwlock_init(&idev->mc_lock);
+ spin_lock_init(&idev->mc_lock);
idev->mc_gq_running = 0;
setup_timer(&idev->mc_gq_timer, mld_gq_timer_expire,
(unsigned long)idev);
@@ -2319,8 +2506,14 @@ void ipv6_mc_init_dev(struct inet6_dev *idev)
idev->mc_ifc_count = 0;
setup_timer(&idev->mc_ifc_timer, mld_ifc_timer_expire,
(unsigned long)idev);
+ setup_timer(&idev->mc_dad_timer, mld_dad_timer_expire,
+ (unsigned long)idev);
+
idev->mc_qrv = MLD_QRV_DEFAULT;
- idev->mc_maxdelay = IGMP6_UNSOLICITED_IVAL;
+ idev->mc_qi = MLD_QI_DEFAULT;
+ idev->mc_qri = MLD_QRI_DEFAULT;
+
+ idev->mc_maxdelay = unsolicited_report_interval(idev);
idev->mc_v1_seen = 0;
write_unlock_bh(&idev->lock);
}
@@ -2646,15 +2839,15 @@ static const struct file_operations igmp6_mcf_seq_fops = {
.release = seq_release_net,
};
-static int igmp6_proc_init(struct net *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))
+ if (!proc_create("igmp6", S_IRUGO, net->proc_net, &igmp6_mc_seq_fops))
goto out;
- if (!proc_net_fops_create(net, "mcfilter6", S_IRUGO,
- &igmp6_mcf_seq_fops))
+ if (!proc_create("mcfilter6", S_IRUGO, net->proc_net,
+ &igmp6_mcf_seq_fops))
goto out_proc_net_igmp6;
err = 0;
@@ -2662,35 +2855,33 @@ out:
return err;
out_proc_net_igmp6:
- proc_net_remove(net, "igmp6");
+ remove_proc_entry("igmp6", net->proc_net);
goto out;
}
-static void igmp6_proc_exit(struct net *net)
+static void __net_exit igmp6_proc_exit(struct net *net)
{
- proc_net_remove(net, "mcfilter6");
- proc_net_remove(net, "igmp6");
+ remove_proc_entry("mcfilter6", net->proc_net);
+ remove_proc_entry("igmp6", net->proc_net);
}
#else
-static int igmp6_proc_init(struct net *net)
+static inline int igmp6_proc_init(struct net *net)
{
return 0;
}
-static void igmp6_proc_exit(struct net *net)
+static inline void igmp6_proc_exit(struct net *net)
{
- ;
}
#endif
-static int igmp6_net_init(struct net *net)
+static int __net_init igmp6_net_init(struct net *net)
{
int err;
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",
+ pr_err("Failed to initialize the IGMP6 control socket (err %d)\n",
err);
goto out;
}
@@ -2708,7 +2899,7 @@ out_sock_create:
goto out;
}
-static void igmp6_net_exit(struct net *net)
+static void __net_exit igmp6_net_exit(struct net *net)
{
inet_ctl_sock_destroy(net->ipv6.igmp_sk);
igmp6_proc_exit(net);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 06:56:27 +0000