diff options
Diffstat (limited to 'net/ipv4/ipmr.c')
-rw-r--r-- | net/ipv4/ipmr.c | 136 |
1 files changed, 67 insertions, 69 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index ecb5422ea23..e6d11abd784 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -241,7 +241,7 @@ failure: /* * Delete a VIF entry */ - + static int vif_delete(int vifi) { struct vif_device *v; @@ -409,7 +409,7 @@ static int vif_add(struct vifctl *vifc, int mrtsock) return -ENOBUFS; break; #endif - case VIFF_TUNNEL: + case VIFF_TUNNEL: dev = ipmr_new_tunnel(vifc); if (!dev) return -ENOBUFS; @@ -479,20 +479,18 @@ static struct mfc_cache *ipmr_cache_find(__be32 origin, __be32 mcastgrp) */ static struct mfc_cache *ipmr_cache_alloc(void) { - struct mfc_cache *c=kmem_cache_alloc(mrt_cachep, GFP_KERNEL); + struct mfc_cache *c=kmem_cache_zalloc(mrt_cachep, GFP_KERNEL); if(c==NULL) return NULL; - memset(c, 0, sizeof(*c)); c->mfc_un.res.minvif = MAXVIFS; return c; } static struct mfc_cache *ipmr_cache_alloc_unres(void) { - struct mfc_cache *c=kmem_cache_alloc(mrt_cachep, GFP_ATOMIC); + struct mfc_cache *c=kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC); if(c==NULL) return NULL; - memset(c, 0, sizeof(*c)); skb_queue_head_init(&c->mfc_un.unres.unresolved); c->mfc_un.unres.expires = jiffies + 10*HZ; return c; @@ -501,7 +499,7 @@ static struct mfc_cache *ipmr_cache_alloc_unres(void) /* * A cache entry has gone into a resolved state from queued */ - + static void ipmr_cache_resolve(struct mfc_cache *uc, struct mfc_cache *c) { struct sk_buff *skb; @@ -538,7 +536,7 @@ static void ipmr_cache_resolve(struct mfc_cache *uc, struct mfc_cache *c) * * Called under mrt_lock. */ - + static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert) { struct sk_buff *skb; @@ -569,13 +567,13 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert) memcpy(msg, pkt->nh.raw, sizeof(struct iphdr)); msg->im_msgtype = IGMPMSG_WHOLEPKT; msg->im_mbz = 0; - msg->im_vif = reg_vif_num; + msg->im_vif = reg_vif_num; skb->nh.iph->ihl = sizeof(struct iphdr) >> 2; skb->nh.iph->tot_len = htons(ntohs(pkt->nh.iph->tot_len) + sizeof(struct iphdr)); - } else + } else #endif - { - + { + /* * Copy the IP header */ @@ -597,7 +595,7 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert) igmp->code = 0; skb->nh.iph->tot_len=htons(skb->len); /* Fix the length */ skb->h.raw = skb->nh.raw; - } + } if (mroute_socket == NULL) { kfree_skb(skb); @@ -619,7 +617,7 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert) /* * Queue a packet for resolution. It gets locked cache entry! */ - + static int ipmr_cache_unresolved(vifi_t vifi, struct sk_buff *skb) { @@ -657,7 +655,7 @@ ipmr_cache_unresolved(vifi_t vifi, struct sk_buff *skb) * Reflect first query at mrouted. */ if ((err = ipmr_cache_report(skb, vifi, IGMPMSG_NOCACHE))<0) { - /* If the report failed throw the cache entry + /* If the report failed throw the cache entry out - Brad Parker */ spin_unlock_bh(&mfc_unres_lock); @@ -783,11 +781,11 @@ static int ipmr_mfc_add(struct mfcctl *mfc, int mrtsock) /* * Close the multicast socket, and clear the vif tables etc */ - + static void mroute_clean_tables(struct sock *sk) { int i; - + /* * Shut down all active vif entries */ @@ -854,13 +852,13 @@ static void mrtsock_destruct(struct sock *sk) * that's how BSD mrouted happens to think. Maybe one day with a proper * MOSPF/PIM router set up we can clean this up. */ - + int ip_mroute_setsockopt(struct sock *sk,int optname,char __user *optval,int optlen) { int ret; struct vifctl vif; struct mfcctl mfc; - + if(optname!=MRT_INIT) { if(sk!=mroute_socket && !capable(CAP_NET_ADMIN)) @@ -901,7 +899,7 @@ int ip_mroute_setsockopt(struct sock *sk,int optname,char __user *optval,int opt if(optlen!=sizeof(vif)) return -EINVAL; if (copy_from_user(&vif,optval,sizeof(vif))) - return -EFAULT; + return -EFAULT; if(vif.vifc_vifi >= MAXVIFS) return -ENFILE; rtnl_lock(); @@ -980,13 +978,13 @@ int ip_mroute_setsockopt(struct sock *sk,int optname,char __user *optval,int opt /* * Getsock opt support for the multicast routing system. */ - + int ip_mroute_getsockopt(struct sock *sk,int optname,char __user *optval,int __user *optlen) { int olr; int val; - if(optname!=MRT_VERSION && + if(optname!=MRT_VERSION && #ifdef CONFIG_IP_PIMSM optname!=MRT_PIM && #endif @@ -999,7 +997,7 @@ int ip_mroute_getsockopt(struct sock *sk,int optname,char __user *optval,int __u olr = min_t(unsigned int, olr, sizeof(int)); if (olr < 0) return -EINVAL; - + if(put_user(olr,optlen)) return -EFAULT; if(optname==MRT_VERSION) @@ -1018,19 +1016,19 @@ int ip_mroute_getsockopt(struct sock *sk,int optname,char __user *optval,int __u /* * The IP multicast ioctl support routines. */ - + int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg) { struct sioc_sg_req sr; struct sioc_vif_req vr; struct vif_device *vif; struct mfc_cache *c; - + switch(cmd) { case SIOCGETVIFCNT: if (copy_from_user(&vr,arg,sizeof(vr))) - return -EFAULT; + return -EFAULT; if(vr.vifi>=maxvif) return -EINVAL; read_lock(&mrt_lock); @@ -1096,7 +1094,7 @@ static struct notifier_block ip_mr_notifier={ * This avoids tunnel drivers and other mess and gives us the speed so * important for multicast video. */ - + static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr) { struct iphdr *iph = (struct iphdr *)skb_push(skb,sizeof(struct iphdr)); @@ -1194,7 +1192,7 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi) encap += LL_RESERVED_SPACE(dev) + rt->u.dst.header_len; if (skb_cow(skb, encap)) { - ip_rt_put(rt); + ip_rt_put(rt); goto out_free; } @@ -1228,7 +1226,7 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi) * not mrouter) cannot join to more than one interface - it will * result in receiving multiple packets. */ - NF_HOOK(PF_INET, NF_IP_FORWARD, skb, skb->dev, dev, + NF_HOOK(PF_INET, NF_IP_FORWARD, skb, skb->dev, dev, ipmr_forward_finish); return; @@ -1289,7 +1287,7 @@ static int ip_mr_forward(struct sk_buff *skb, struct mfc_cache *cache, int local large chunk of pimd to kernel. Ough... --ANK */ (mroute_do_pim || cache->mfc_un.res.ttls[true_vifi] < 255) && - time_after(jiffies, + time_after(jiffies, cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) { cache->mfc_un.res.last_assert = jiffies; ipmr_cache_report(skb, true_vifi, IGMPMSG_WRONGVIF); @@ -1426,14 +1424,14 @@ int pim_rcv_v1(struct sk_buff * skb) struct iphdr *encap; struct net_device *reg_dev = NULL; - if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap))) + if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap))) goto drop; pim = (struct igmphdr*)skb->h.raw; - if (!mroute_do_pim || + if (!mroute_do_pim || skb->len < sizeof(*pim) + sizeof(*encap) || - pim->group != PIM_V1_VERSION || pim->code != PIM_V1_REGISTER) + pim->group != PIM_V1_VERSION || pim->code != PIM_V1_REGISTER) goto drop; encap = (struct iphdr*)(skb->h.raw + sizeof(struct igmphdr)); @@ -1445,7 +1443,7 @@ int pim_rcv_v1(struct sk_buff * skb) */ if (!MULTICAST(encap->daddr) || encap->tot_len == 0 || - ntohs(encap->tot_len) + sizeof(*pim) > skb->len) + ntohs(encap->tot_len) + sizeof(*pim) > skb->len) goto drop; read_lock(&mrt_lock); @@ -1455,7 +1453,7 @@ int pim_rcv_v1(struct sk_buff * skb) dev_hold(reg_dev); read_unlock(&mrt_lock); - if (reg_dev == NULL) + if (reg_dev == NULL) goto drop; skb->mac.raw = skb->nh.raw; @@ -1486,13 +1484,13 @@ static int pim_rcv(struct sk_buff * skb) struct iphdr *encap; struct net_device *reg_dev = NULL; - if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap))) + if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap))) goto drop; pim = (struct pimreghdr*)skb->h.raw; - if (pim->type != ((PIM_VERSION<<4)|(PIM_REGISTER)) || + if (pim->type != ((PIM_VERSION<<4)|(PIM_REGISTER)) || (pim->flags&PIM_NULL_REGISTER) || - (ip_compute_csum((void *)pim, sizeof(*pim)) != 0 && + (ip_compute_csum((void *)pim, sizeof(*pim)) != 0 && csum_fold(skb_checksum(skb, 0, skb->len, 0)))) goto drop; @@ -1500,7 +1498,7 @@ static int pim_rcv(struct sk_buff * skb) encap = (struct iphdr*)(skb->h.raw + sizeof(struct pimreghdr)); if (!MULTICAST(encap->daddr) || encap->tot_len == 0 || - ntohs(encap->tot_len) + sizeof(*pim) > skb->len) + ntohs(encap->tot_len) + sizeof(*pim) > skb->len) goto drop; read_lock(&mrt_lock); @@ -1510,7 +1508,7 @@ static int pim_rcv(struct sk_buff * skb) dev_hold(reg_dev); read_unlock(&mrt_lock); - if (reg_dev == NULL) + if (reg_dev == NULL) goto drop; skb->mac.raw = skb->nh.raw; @@ -1616,7 +1614,7 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait) return err; } -#ifdef CONFIG_PROC_FS +#ifdef CONFIG_PROC_FS /* * The /proc interfaces to multicast routing /proc/ip_mr_cache /proc/ip_mr_vif */ @@ -1630,7 +1628,7 @@ static struct vif_device *ipmr_vif_seq_idx(struct ipmr_vif_iter *iter, for (iter->ct = 0; iter->ct < maxvif; ++iter->ct) { if(!VIF_EXISTS(iter->ct)) continue; - if (pos-- == 0) + if (pos-- == 0) return &vif_table[iter->ct]; } return NULL; @@ -1639,7 +1637,7 @@ static struct vif_device *ipmr_vif_seq_idx(struct ipmr_vif_iter *iter, static void *ipmr_vif_seq_start(struct seq_file *seq, loff_t *pos) { read_lock(&mrt_lock); - return *pos ? ipmr_vif_seq_idx(seq->private, *pos - 1) + return *pos ? ipmr_vif_seq_idx(seq->private, *pos - 1) : SEQ_START_TOKEN; } @@ -1650,7 +1648,7 @@ static void *ipmr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos) ++*pos; if (v == SEQ_START_TOKEN) return ipmr_vif_seq_idx(iter, 0); - + while (++iter->ct < maxvif) { if(!VIF_EXISTS(iter->ct)) continue; @@ -1667,7 +1665,7 @@ static void ipmr_vif_seq_stop(struct seq_file *seq, void *v) static int ipmr_vif_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) { - seq_puts(seq, + seq_puts(seq, "Interface BytesIn PktsIn BytesOut PktsOut Flags Local Remote\n"); } else { const struct vif_device *vif = v; @@ -1676,7 +1674,7 @@ static int ipmr_vif_seq_show(struct seq_file *seq, void *v) seq_printf(seq, "%2Zd %-10s %8ld %7ld %8ld %7ld %05X %08X %08X\n", vif - vif_table, - name, vif->bytes_in, vif->pkt_in, + name, vif->bytes_in, vif->pkt_in, vif->bytes_out, vif->pkt_out, vif->flags, vif->local, vif->remote); } @@ -1695,7 +1693,7 @@ static int ipmr_vif_open(struct inode *inode, struct file *file) struct seq_file *seq; int rc = -ENOMEM; struct ipmr_vif_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); - + if (!s) goto out; @@ -1714,7 +1712,7 @@ out_kfree: } -static struct file_operations ipmr_vif_fops = { +static const struct file_operations ipmr_vif_fops = { .owner = THIS_MODULE, .open = ipmr_vif_open, .read = seq_read, @@ -1734,15 +1732,15 @@ static struct mfc_cache *ipmr_mfc_seq_idx(struct ipmr_mfc_iter *it, loff_t pos) it->cache = mfc_cache_array; read_lock(&mrt_lock); - for (it->ct = 0; it->ct < MFC_LINES; it->ct++) - for(mfc = mfc_cache_array[it->ct]; mfc; mfc = mfc->next) - if (pos-- == 0) + for (it->ct = 0; it->ct < MFC_LINES; it->ct++) + for(mfc = mfc_cache_array[it->ct]; mfc; mfc = mfc->next) + if (pos-- == 0) return mfc; read_unlock(&mrt_lock); it->cache = &mfc_unres_queue; spin_lock_bh(&mfc_unres_lock); - for(mfc = mfc_unres_queue; mfc; mfc = mfc->next) + for(mfc = mfc_unres_queue; mfc; mfc = mfc->next) if (pos-- == 0) return mfc; spin_unlock_bh(&mfc_unres_lock); @@ -1757,7 +1755,7 @@ static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos) struct ipmr_mfc_iter *it = seq->private; it->cache = NULL; it->ct = 0; - return *pos ? ipmr_mfc_seq_idx(seq->private, *pos - 1) + return *pos ? ipmr_mfc_seq_idx(seq->private, *pos - 1) : SEQ_START_TOKEN; } @@ -1773,8 +1771,8 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) if (mfc->next) return mfc->next; - - if (it->cache == &mfc_unres_queue) + + if (it->cache == &mfc_unres_queue) goto end_of_list; BUG_ON(it->cache != mfc_cache_array); @@ -1789,10 +1787,10 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) read_unlock(&mrt_lock); it->cache = &mfc_unres_queue; it->ct = 0; - + spin_lock_bh(&mfc_unres_lock); mfc = mfc_unres_queue; - if (mfc) + if (mfc) return mfc; end_of_list: @@ -1817,12 +1815,12 @@ static int ipmr_mfc_seq_show(struct seq_file *seq, void *v) int n; if (v == SEQ_START_TOKEN) { - seq_puts(seq, + seq_puts(seq, "Group Origin Iif Pkts Bytes Wrong Oifs\n"); } else { const struct mfc_cache *mfc = v; const struct ipmr_mfc_iter *it = seq->private; - + seq_printf(seq, "%08lX %08lX %-3d %8ld %8ld %8ld", (unsigned long) mfc->mfc_mcastgrp, (unsigned long) mfc->mfc_origin, @@ -1832,12 +1830,12 @@ static int ipmr_mfc_seq_show(struct seq_file *seq, void *v) mfc->mfc_un.res.wrong_if); if (it->cache != &mfc_unres_queue) { - for(n = mfc->mfc_un.res.minvif; + for(n = mfc->mfc_un.res.minvif; n < mfc->mfc_un.res.maxvif; n++ ) { - if(VIF_EXISTS(n) + if(VIF_EXISTS(n) && mfc->mfc_un.res.ttls[n] < 255) - seq_printf(seq, - " %2d:%-3d", + seq_printf(seq, + " %2d:%-3d", n, mfc->mfc_un.res.ttls[n]); } } @@ -1858,7 +1856,7 @@ static int ipmr_mfc_open(struct inode *inode, struct file *file) struct seq_file *seq; int rc = -ENOMEM; struct ipmr_mfc_iter *s = kmalloc(sizeof(*s), GFP_KERNEL); - + if (!s) goto out; @@ -1876,14 +1874,14 @@ out_kfree: } -static struct file_operations ipmr_mfc_fops = { +static const struct file_operations ipmr_mfc_fops = { .owner = THIS_MODULE, .open = ipmr_mfc_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, }; -#endif +#endif #ifdef CONFIG_IP_PIMSM_V2 static struct net_protocol pim_protocol = { @@ -1895,7 +1893,7 @@ static struct net_protocol pim_protocol = { /* * Setup for IP multicast routing */ - + void __init ip_mr_init(void) { mrt_cachep = kmem_cache_create("ip_mrt_cache", @@ -1905,8 +1903,8 @@ void __init ip_mr_init(void) init_timer(&ipmr_expire_timer); ipmr_expire_timer.function=ipmr_expire_process; register_netdevice_notifier(&ip_mr_notifier); -#ifdef CONFIG_PROC_FS +#ifdef CONFIG_PROC_FS proc_net_fops_create("ip_mr_vif", 0, &ipmr_vif_fops); proc_net_fops_create("ip_mr_cache", 0, &ipmr_mfc_fops); -#endif +#endif } |