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Diffstat (limited to 'net/ipv6/mcast.c')
-rw-r--r--net/ipv6/mcast.c335
1 files changed, 137 insertions, 198 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index bcd97191596..d1444b95ad7 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -43,6 +43,8 @@
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <net/mld.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
@@ -70,54 +72,11 @@
#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;
@@ -156,14 +115,6 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
((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)
-
#define IPV6_MLD_MAX_MSF 64
int sysctl_mld_max_msf __read_mostly = IPV6_MLD_MAX_MSF;
@@ -201,18 +152,19 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
mc_lst->next = NULL;
ipv6_addr_copy(&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);
+ dst_release(&rt->dst);
}
} 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;
}
@@ -229,8 +181,8 @@ 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;
}
@@ -239,7 +191,7 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
np->ipv6_mc_list = mc_lst;
write_unlock_bh(&ipv6_sk_mc_lock);
- dev_put(dev);
+ rcu_read_unlock();
return 0;
}
@@ -262,18 +214,17 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
*lnk = mc_lst->next;
write_unlock_bh(&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);
+ rcu_read_unlock();
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
return 0;
}
@@ -283,43 +234,36 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
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,
+ 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);
+ dst_release(&rt->dst);
}
} 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)
@@ -335,19 +279,17 @@ void ipv6_sock_mc_close(struct sock *sk)
np->ipv6_mc_list = mc_lst->next;
write_unlock_bh(&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));
write_lock_bh(&ipv6_sk_mc_lock);
@@ -376,14 +318,17 @@ 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);
+ read_lock(&ipv6_sk_mc_lock);
for (pmc=inet6->ipv6_mc_list; pmc; pmc=pmc->next) {
if (pgsr->gsr_interface && pmc->ifindex != pgsr->gsr_interface)
continue;
@@ -407,7 +352,7 @@ 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;
@@ -482,11 +427,10 @@ 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(&ipv6_sk_mc_lock);
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;
@@ -512,14 +456,17 @@ 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);
+ read_lock(&ipv6_sk_mc_lock);
if (gsf->gf_fmode == MCAST_INCLUDE && gsf->gf_numsrc == 0) {
leavegroup = 1;
@@ -561,7 +508,7 @@ 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 +518,12 @@ 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(&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;
@@ -600,11 +546,13 @@ 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;
@@ -626,8 +574,7 @@ 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;
@@ -653,8 +600,7 @@ 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;
}
@@ -714,7 +660,7 @@ static void igmp6_group_added(struct ifmcaddr6 *mc)
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);
@@ -740,7 +686,7 @@ static void igmp6_group_dropped(struct ifmcaddr6 *mc)
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)
@@ -871,6 +817,7 @@ 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)
@@ -909,7 +856,7 @@ 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->idev = idev; /* (reference taken) */
mc->mca_users = 1;
/* mca_stamp should be updated upon changes */
mc->mca_cstamp = mc->mca_tstamp = jiffies;
@@ -964,16 +911,18 @@ 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;
}
@@ -1014,7 +963,8 @@ int ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
struct ifmcaddr6 *mc;
int rv = 0;
- 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) {
@@ -1041,8 +991,8 @@ int ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
rv = 1; /* don't filter unspecified source */
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
}
+ rcu_read_unlock();
return rv;
}
@@ -1153,6 +1103,7 @@ static int mld_marksources(struct ifmcaddr6 *pmc, int nsrcs,
return 1;
}
+/* called with rcu_read_lock() */
int igmp6_event_query(struct sk_buff *skb)
{
struct mld2_query *mlh2 = NULL;
@@ -1160,7 +1111,7 @@ int igmp6_event_query(struct sk_buff *skb)
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;
@@ -1176,27 +1127,25 @@ int igmp6_event_query(struct sk_buff *skb)
if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL))
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;
+ max_delay = (ntohs(mld->mld_maxdelay)*HZ)/1000;
switchback = (idev->mc_qrv + 1) * max_delay;
idev->mc_v1_seen = jiffies + switchback;
@@ -1210,40 +1159,34 @@ int igmp6_event_query(struct sk_buff *skb)
} else if (len >= 28) {
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;
+ max_delay = (MLDV2_MRC(ntohs(mlh2->mld2q_mrc))*HZ)/1000;
if (!max_delay)
max_delay = 1;
idev->mc_maxdelay = max_delay;
- if (mlh2->qrv)
- idev->mc_qrv = mlh2->qrv;
+ if (mlh2->mld2q_qrv)
+ idev->mc_qrv = mlh2->mld2q_qrv;
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) {
@@ -1269,25 +1212,23 @@ 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. */
@@ -1299,10 +1240,10 @@ 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);
@@ -1310,9 +1251,7 @@ 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;
@@ -1322,7 +1261,7 @@ 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);
@@ -1332,7 +1271,6 @@ int igmp6_event_report(struct sk_buff *skb)
}
}
read_unlock_bh(&idev->lock);
- in6_dev_put(idev);
return 0;
}
@@ -1408,7 +1346,10 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
IPV6_TLV_PADN, 0 };
/* we assume size > sizeof(ra) here */
- skb = sock_alloc_send_skb(sk, size + LL_ALLOCATED_SPACE(dev), 1, &err);
+ size += LL_ALLOCATED_SPACE(dev);
+ /* 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;
@@ -1431,11 +1372,11 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
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;
}
@@ -1445,21 +1386,24 @@ 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 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;
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));
+ pmr->mld2r_cksum = 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);
@@ -1479,7 +1423,7 @@ static void mld_sendpack(struct sk_buff *skb)
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) {
@@ -1489,8 +1433,7 @@ out:
} else
IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_OUTDISCARDS);
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ rcu_read_unlock();
return;
err_out:
@@ -1520,7 +1463,7 @@ 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;
}
@@ -1556,7 +1499,7 @@ 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);
@@ -1769,9 +1712,8 @@ 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 err, len, payload_len, full_len;
u8 ra[8] = { IPPROTO_ICMPV6, 0,
@@ -1819,18 +1761,17 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
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;
+ ipv6_addr_copy(&hdr->mld_mca, addr);
- hdr->icmp6_cksum = csum_ipv6_magic(saddr, snd_addr, len,
- IPPROTO_ICMPV6,
- csum_partial(hdr, len, 0));
+ hdr->mld_cksum = csum_ipv6_magic(saddr, snd_addr, len,
+ IPPROTO_ICMPV6,
+ csum_partial(hdr, len, 0));
- idev = in6_dev_get(skb->dev);
+ rcu_read_lock();
+ idev = __in6_dev_get(skb->dev);
dst = icmp6_dst_alloc(skb->dev, NULL, &ipv6_hdr(skb)->daddr);
if (!dst) {
@@ -1847,7 +1788,7 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
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) {
@@ -1857,8 +1798,7 @@ out:
} else
IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ rcu_read_unlock();
return;
err_out:
@@ -2049,8 +1989,7 @@ 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;
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-02 19:45:19 +0000