type stringclasses 5
values | content stringlengths 9 163k |
|---|---|
includes |
#include <linux/module.h> |
includes | #include <linux/slab.h> |
includes | #include <linux/uaccess.h> |
includes | #include <linux/types.h> |
includes | #include <linux/kernel.h> |
includes | #include <linux/jiffies.h> |
includes | #include <linux/string.h> |
includes | #include <linux/socket.h> |
includes | #include <linux/sockios.h> |
includes | #include <linux/in.h> |
includes | #include <linux/inet.h> |
includes | #include <linux/netdevice.h> |
includes | #include <linux/skbuff.h> |
includes | #include <linux/inetdevice.h> |
includes | #include <linux/igmp.h> |
includes | #include <linux/if_arp.h> |
includes | #include <linux/rtnetlink.h> |
includes | #include <linux/times.h> |
includes | #include <linux/pkt_sched.h> |
includes |
#include <net/net_namespace.h> |
includes | #include <net/arp.h> |
includes | #include <net/ip.h> |
includes | #include <net/protocol.h> |
includes | #include <net/route.h> |
includes | #include <net/sock.h> |
includes | #include <net/checksum.h> |
includes | #include <net/inet_common.h> |
includes | #include <linux/netfilter_ipv4.h> |
includes | #include <linux/mroute.h> |
includes | #include <linux/proc_fs.h> |
includes | #include <linux/seq_file.h> |
defines |
#define IGMP_V1_ROUTER_PRESENT_TIMEOUT (400*HZ) |
defines | #define IGMP_V2_ROUTER_PRESENT_TIMEOUT (400*HZ) |
defines | #define IGMP_V2_UNSOLICITED_REPORT_INTERVAL (10*HZ) |
defines | #define IGMP_V3_UNSOLICITED_REPORT_INTERVAL (1*HZ) |
defines | #define IGMP_QUERY_RESPONSE_INTERVAL (10*HZ) |
defines | #define IGMP_QUERY_ROBUSTNESS_VARIABLE 2 |
defines |
#define IGMP_INITIAL_REPORT_DELAY (1) |
defines |
#define IGMP_V1_SEEN(in_dev) \ |
defines | #define IGMP_V2_SEEN(in_dev) \ |
defines |
#define for_each_pmc_rcu(in_dev, pmc) \ |
defines |
#define for_each_pmc_rtnl(in_dev, pmc) \ |
defines |
#define IGMP_SIZE (sizeof(struct igmphdr)+sizeof(struct iphdr)+4) |
defines |
#define AVAILABLE(skb) ((skb) ? skb_availroom(skb) : 0) |
defines | #define igmp_ifc_event(x) do { } while (0) |
defines |
#define igmp_mc_seq_private(seq) ((struct igmp_mc_iter_state *)(seq)->private) |
defines |
#define igmp_mcf_seq_private(seq) ((struct igmp_mcf_iter_state *)(seq)->private) |
structs | struct igmp_mc_iter_state {
struct seq_net_private p;
struct net_device *dev;
struct in_device *in_dev;
}; |
structs | struct igmp_mcf_iter_state {
struct seq_net_private p;
struct net_device *dev;
struct in_device *idev;
struct ip_mc_list *im;
}; |
functions | int unsolicited_report_interval(struct in_device *in_dev)
{
int interval_ms, interval_jiffies;
if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev))
interval_ms = IN_DEV_CONF_GET(
in_dev,
IGMPV2_UNSOLICITED_REPORT_INTERVAL);
else /* v3 */
interval_ms = IN_DEV_CONF_GET(
in_dev,
IGMPV3_UNSOLICITED_REPORT_... |
functions | void ip_ma_put(struct ip_mc_list *im)
{
if (refcount_dec_and_test(&im->refcnt)) {
in_dev_put(im->interface);
kfree_rcu(im, rcu);
} |
functions | void igmp_stop_timer(struct ip_mc_list *im)
{
spin_lock_bh(&im->lock);
if (del_timer(&im->timer))
refcount_dec(&im->refcnt);
im->tm_running = 0;
im->reporter = 0;
im->unsolicit_count = 0;
spin_unlock_bh(&im->lock);
} |
functions | void igmp_start_timer(struct ip_mc_list *im, int max_delay)
{
int tv = prandom_u32() % max_delay;
im->tm_running = 1;
if (!mod_timer(&im->timer, jiffies+tv+2))
refcount_inc(&im->refcnt);
} |
functions | void igmp_gq_start_timer(struct in_device *in_dev)
{
int tv = prandom_u32() % in_dev->mr_maxdelay;
unsigned long exp = jiffies + tv + 2;
if (in_dev->mr_gq_running &&
time_after_eq(exp, (in_dev->mr_gq_timer).expires))
return;
in_dev->mr_gq_running = 1;
if (!mod_timer(&in_dev->mr_gq_timer, exp))
in_dev_ho... |
functions | void igmp_ifc_start_timer(struct in_device *in_dev, int delay)
{
int tv = prandom_u32() % delay;
if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2))
in_dev_hold(in_dev);
} |
functions | void igmp_mod_timer(struct ip_mc_list *im, int max_delay)
{
spin_lock_bh(&im->lock);
im->unsolicit_count = 0;
if (del_timer(&im->timer)) {
if ((long)(im->timer.expires-jiffies) < max_delay) {
add_timer(&im->timer);
im->tm_running = 1;
spin_unlock_bh(&im->lock);
return;
} |
functions | int is_in(struct ip_mc_list *pmc, struct ip_sf_list *psf, int type,
int gdeleted, int sdeleted)
{
switch (type) {
case IGMPV3_MODE_IS_INCLUDE:
case IGMPV3_MODE_IS_EXCLUDE:
if (gdeleted || sdeleted)
return 0;
if (!(pmc->gsquery && !psf->sf_gsresp)) {
if (pmc->sfmode == MCAST_INCLUDE)
return 1;
/* do... |
functions | int
igmp_scount(struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted)
{
struct ip_sf_list *psf;
int scount = 0;
for (psf = pmc->sources; psf; psf = psf->sf_next) {
if (!is_in(pmc, psf, type, gdeleted, sdeleted))
continue;
scount++;
} |
functions | int igmpv3_sendpack(struct sk_buff *skb)
{
struct igmphdr *pig = igmp_hdr(skb);
const int igmplen = skb_tail_pointer(skb) - skb_transport_header(skb);
pig->csum = ip_compute_csum(igmp_hdr(skb), igmplen);
return ip_local_out(dev_net(skb_dst(skb)->dev), skb->sk, skb);
} |
functions | int grec_size(struct ip_mc_list *pmc, int type, int gdel, int sdel)
{
return sizeof(struct igmpv3_grec) + 4*igmp_scount(pmc, type, gdel, sdel);
} |
functions | int igmpv3_send_report(struct in_device *in_dev, struct ip_mc_list *pmc)
{
struct sk_buff *skb = NULL;
struct net *net = dev_net(in_dev->dev);
int type;
if (!pmc) {
rcu_read_lock();
for_each_pmc_rcu(in_dev, pmc) {
if (pmc->multiaddr == IGMP_ALL_HOSTS)
continue;
if (ipv4_is_local_multicast(pmc->multia... |
functions | void igmpv3_clear_zeros(struct ip_sf_list **ppsf)
{
struct ip_sf_list *psf_prev, *psf_next, *psf;
psf_prev = NULL;
for (psf = *ppsf; psf; psf = psf_next) {
psf_next = psf->sf_next;
if (psf->sf_crcount == 0) {
if (psf_prev)
psf_prev->sf_next = psf->sf_next;
else
*ppsf = psf->sf_next;
kfree(psf);... |
functions | void igmpv3_send_cr(struct in_device *in_dev)
{
struct ip_mc_list *pmc, *pmc_prev, *pmc_next;
struct sk_buff *skb = NULL;
int type, dtype;
rcu_read_lock();
spin_lock_bh(&in_dev->mc_tomb_lock);
/* deleted MCA's */
pmc_prev = NULL;
for (pmc = in_dev->mc_tomb; pmc; pmc = pmc_next) {
pmc_next = pmc->next;
if ... |
functions | int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
int type)
{
struct sk_buff *skb;
struct iphdr *iph;
struct igmphdr *ih;
struct rtable *rt;
struct net_device *dev = in_dev->dev;
struct net *net = dev_net(dev);
__be32 group = pmc ? pmc->multiaddr : 0;
struct flowi4 fl4;
__be32 dst;
int h... |
functions | void igmp_gq_timer_expire(unsigned long data)
{
struct in_device *in_dev = (struct in_device *)data;
in_dev->mr_gq_running = 0;
igmpv3_send_report(in_dev, NULL);
in_dev_put(in_dev);
} |
functions | void igmp_ifc_timer_expire(unsigned long data)
{
struct in_device *in_dev = (struct in_device *)data;
igmpv3_send_cr(in_dev);
if (in_dev->mr_ifc_count) {
in_dev->mr_ifc_count--;
igmp_ifc_start_timer(in_dev,
unsolicited_report_interval(in_dev));
} |
functions | void igmp_ifc_event(struct in_device *in_dev)
{
struct net *net = dev_net(in_dev->dev);
if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev))
return;
in_dev->mr_ifc_count = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;
igmp_ifc_start_timer(in_dev, 1);
} |
functions | void igmp_timer_expire(unsigned long data)
{
struct ip_mc_list *im = (struct ip_mc_list *)data;
struct in_device *in_dev = im->interface;
spin_lock(&im->lock);
im->tm_running = 0;
if (im->unsolicit_count) {
im->unsolicit_count--;
igmp_start_timer(im, unsolicited_report_interval(in_dev));
} |
functions | int igmp_xmarksources(struct ip_mc_list *pmc, int nsrcs, __be32 *srcs)
{
struct ip_sf_list *psf;
int i, scount;
scount = 0;
for (psf = pmc->sources; psf; psf = psf->sf_next) {
if (scount == nsrcs)
break;
for (i = 0; i < nsrcs; i++) {
/* skip inactive filters */
if (psf->sf_count[MCAST_INCLUDE] ||
... |
functions | int igmp_marksources(struct ip_mc_list *pmc, int nsrcs, __be32 *srcs)
{
struct ip_sf_list *psf;
int i, scount;
if (pmc->sfmode == MCAST_EXCLUDE)
return igmp_xmarksources(pmc, nsrcs, srcs);
/* mark INCLUDE-mode sources */
scount = 0;
for (psf = pmc->sources; psf; psf = psf->sf_next) {
if (scount == nsrcs)
... |
functions | bool igmp_heard_report(struct in_device *in_dev, __be32 group)
{
struct ip_mc_list *im;
struct net *net = dev_net(in_dev->dev);
/* Timers are only set for non-local groups */
if (group == IGMP_ALL_HOSTS)
return false;
if (ipv4_is_local_multicast(group) && !net->ipv4.sysctl_igmp_llm_reports)
return false;
r... |
functions | bool igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
int len)
{
struct igmphdr *ih = igmp_hdr(skb);
struct igmpv3_query *ih3 = igmpv3_query_hdr(skb);
struct ip_mc_list *im;
__be32 group = ih->group;
int max_delay;
int mark = 0;
struct net *net = dev_net(in_dev->dev);
if (len == 8) {
... |
functions | else if (len < 12) {
return true; /* ignore bogus packet; freed by caller */
} |
functions | int igmp_rcv(struct sk_buff *skb)
{
/* This basically follows the spec line by line -- see RFC1112 */
struct igmphdr *ih;
struct net_device *dev = skb->dev;
struct in_device *in_dev;
int len = skb->len;
bool dropped = true;
if (netif_is_l3_master(dev)) {
dev = dev_get_by_index_rcu(dev_net(dev), IPCB(skb)->iif... |
functions | void ip_mc_filter_add(struct in_device *in_dev, __be32 addr)
{
char buf[MAX_ADDR_LEN];
struct net_device *dev = in_dev->dev;
/* Checking for IFF_MULTICAST here is WRONG-WRONG-WRONG.
We will get multicast token leakage, when IFF_MULTICAST
is changed. This check should be done in ndo_set_rx_mode
routine. ... |
functions | void ip_mc_filter_del(struct in_device *in_dev, __be32 addr)
{
char buf[MAX_ADDR_LEN];
struct net_device *dev = in_dev->dev;
if (arp_mc_map(addr, buf, dev, 0) == 0)
dev_mc_del(dev, buf);
} |
functions | void igmpv3_add_delrec(struct in_device *in_dev, struct ip_mc_list *im)
{
struct ip_mc_list *pmc;
struct net *net = dev_net(in_dev->dev);
/* this is an "ip_mc_list" for convenience; only the fields below
* are actually used. In particular, the refcnt and users are not
* used for management of the delete list. U... |
functions | void igmpv3_del_delrec(struct in_device *in_dev, struct ip_mc_list *im)
{
struct ip_mc_list *pmc, *pmc_prev;
struct ip_sf_list *psf;
struct net *net = dev_net(in_dev->dev);
__be32 multiaddr = im->multiaddr;
spin_lock_bh(&in_dev->mc_tomb_lock);
pmc_prev = NULL;
for (pmc = in_dev->mc_tomb; pmc; pmc = pmc->next) {... |
functions | void igmpv3_clear_delrec(struct in_device *in_dev)
{
struct ip_mc_list *pmc, *nextpmc;
spin_lock_bh(&in_dev->mc_tomb_lock);
pmc = in_dev->mc_tomb;
in_dev->mc_tomb = NULL;
spin_unlock_bh(&in_dev->mc_tomb_lock);
for (; pmc; pmc = nextpmc) {
nextpmc = pmc->next;
ip_mc_clear_src(pmc);
in_dev_put(pmc->interfac... |
functions | void igmp_group_dropped(struct ip_mc_list *im)
{
struct in_device *in_dev = im->interface;
#ifdef CONFIG_IP_MULTICAST
struct net *net = dev_net(in_dev->dev);
int reporter;
#endif
if (im->loaded) {
im->loaded = 0;
ip_mc_filter_del(in_dev, im->multiaddr);
} |
functions | void igmp_group_added(struct ip_mc_list *im)
{
struct in_device *in_dev = im->interface;
#ifdef CONFIG_IP_MULTICAST
struct net *net = dev_net(in_dev->dev);
#endif
if (im->loaded == 0) {
im->loaded = 1;
ip_mc_filter_add(in_dev, im->multiaddr);
} |
functions | u32 ip_mc_hash(const struct ip_mc_list *im)
{
return hash_32((__force u32)im->multiaddr, MC_HASH_SZ_LOG);
} |
functions | void ip_mc_hash_add(struct in_device *in_dev,
struct ip_mc_list *im)
{
struct ip_mc_list __rcu **mc_hash;
u32 hash;
mc_hash = rtnl_dereference(in_dev->mc_hash);
if (mc_hash) {
hash = ip_mc_hash(im);
im->next_hash = mc_hash[hash];
rcu_assign_pointer(mc_hash[hash], im);
return;
} |
functions | void ip_mc_hash_remove(struct in_device *in_dev,
struct ip_mc_list *im)
{
struct ip_mc_list __rcu **mc_hash = rtnl_dereference(in_dev->mc_hash);
struct ip_mc_list *aux;
if (!mc_hash)
return;
mc_hash += ip_mc_hash(im);
while ((aux = rtnl_dereference(*mc_hash)) != im)
mc_hash = &aux->next_hash;
*mc_ha... |
functions | void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
{
struct ip_mc_list *im;
#ifdef CONFIG_IP_MULTICAST
struct net *net = dev_net(in_dev->dev);
#endif
ASSERT_RTNL();
for_each_pmc_rtnl(in_dev, im) {
if (im->multiaddr == addr) {
im->users++;
ip_mc_add_src(in_dev, &addr, MCAST_EXCLUDE, 0, NULL, 0);
... |
functions | int ip_mc_check_iphdr(struct sk_buff *skb)
{
const struct iphdr *iph;
unsigned int len;
unsigned int offset = skb_network_offset(skb) + sizeof(*iph);
if (!pskb_may_pull(skb, offset))
return -EINVAL;
iph = ip_hdr(skb);
if (iph->version != 4 || ip_hdrlen(skb) < sizeof(*iph))
return -EINVAL;
offset += ip_hd... |
functions | int ip_mc_check_igmp_reportv3(struct sk_buff *skb)
{
unsigned int len = skb_transport_offset(skb);
len += sizeof(struct igmpv3_report);
return pskb_may_pull(skb, len) ? 0 : -EINVAL;
} |
functions | int ip_mc_check_igmp_query(struct sk_buff *skb)
{
unsigned int len = skb_transport_offset(skb);
len += sizeof(struct igmphdr);
if (skb->len < len)
return -EINVAL;
/* IGMPv{1,2} |
functions | int ip_mc_check_igmp_msg(struct sk_buff *skb)
{
switch (igmp_hdr(skb)->type) {
case IGMP_HOST_LEAVE_MESSAGE:
case IGMP_HOST_MEMBERSHIP_REPORT:
case IGMPV2_HOST_MEMBERSHIP_REPORT:
/* fall through */
return 0;
case IGMPV3_HOST_MEMBERSHIP_REPORT:
return ip_mc_check_igmp_reportv3(skb);
case IGMP_HOST_MEMBERSHIP... |
functions | __sum16 ip_mc_validate_checksum(struct sk_buff *skb)
{
return skb_checksum_simple_validate(skb);
} |
functions | int __ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed)
{
struct sk_buff *skb_chk;
unsigned int transport_len;
unsigned int len = skb_transport_offset(skb) + sizeof(struct igmphdr);
int ret = -EINVAL;
transport_len = ntohs(ip_hdr(skb)->tot_len) - ip_hdrlen(skb);
skb_chk = skb_checksum_trimmed... |
functions | int ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed)
{
int ret = ip_mc_check_iphdr(skb);
if (ret < 0)
return ret;
if (ip_hdr(skb)->protocol != IPPROTO_IGMP)
return -ENOMSG;
return __ip_mc_check_igmp(skb, skb_trimmed);
} |
functions | void ip_mc_rejoin_groups(struct in_device *in_dev)
{
#ifdef CONFIG_IP_MULTICAST
struct ip_mc_list *im;
int type;
struct net *net = dev_net(in_dev->dev);
ASSERT_RTNL();
for_each_pmc_rtnl(in_dev, im) {
if (im->multiaddr == IGMP_ALL_HOSTS)
continue;
if (ipv4_is_local_multicast(im->multiaddr) &&
!net->i... |
functions | void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
{
struct ip_mc_list *i;
struct ip_mc_list __rcu **ip;
ASSERT_RTNL();
for (ip = &in_dev->mc_list;
(i = rtnl_dereference(*ip)) != NULL;
ip = &i->next_rcu) {
if (i->multiaddr == addr) {
if (--i->users == 0) {
ip_mc_hash_remove(in_dev, i... |
functions | void ip_mc_unmap(struct in_device *in_dev)
{
struct ip_mc_list *pmc;
ASSERT_RTNL();
for_each_pmc_rtnl(in_dev, pmc)
igmp_group_dropped(pmc);
} |
functions | void ip_mc_remap(struct in_device *in_dev)
{
struct ip_mc_list *pmc;
ASSERT_RTNL();
for_each_pmc_rtnl(in_dev, pmc) {
#ifdef CONFIG_IP_MULTICAST
igmpv3_del_delrec(in_dev, pmc);
#endif
igmp_group_added(pmc);
} |
functions | void ip_mc_down(struct in_device *in_dev)
{
struct ip_mc_list *pmc;
ASSERT_RTNL();
for_each_pmc_rtnl(in_dev, pmc)
igmp_group_dropped(pmc);
#ifdef CONFIG_IP_MULTICAST
in_dev->mr_ifc_count = 0;
if (del_timer(&in_dev->mr_ifc_timer))
__in_dev_put(in_dev);
in_dev->mr_gq_running = 0;
if (del_timer(&in_dev->mr_g... |
functions | void ip_mc_init_dev(struct in_device *in_dev)
{
#ifdef CONFIG_IP_MULTICAST
struct net *net = dev_net(in_dev->dev);
#endif
ASSERT_RTNL();
#ifdef CONFIG_IP_MULTICAST
setup_timer(&in_dev->mr_gq_timer, igmp_gq_timer_expire,
(unsigned long)in_dev);
setup_timer(&in_dev->mr_ifc_timer, igmp_ifc_timer_expire,
(unsign... |
functions | void ip_mc_up(struct in_device *in_dev)
{
struct ip_mc_list *pmc;
#ifdef CONFIG_IP_MULTICAST
struct net *net = dev_net(in_dev->dev);
#endif
ASSERT_RTNL();
#ifdef CONFIG_IP_MULTICAST
in_dev->mr_qrv = net->ipv4.sysctl_igmp_qrv;
#endif
ip_mc_inc_group(in_dev, IGMP_ALL_HOSTS);
for_each_pmc_rtnl(in_dev, pmc) {
#ifd... |
functions | void ip_mc_destroy_dev(struct in_device *in_dev)
{
struct ip_mc_list *i;
ASSERT_RTNL();
/* Deactivate timers */
ip_mc_down(in_dev);
#ifdef CONFIG_IP_MULTICAST
igmpv3_clear_delrec(in_dev);
#endif
while ((i = rtnl_dereference(in_dev->mc_list)) != NULL) {
in_dev->mc_list = i->next_rcu;
in_dev->mc_count--;
i... |
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