X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fipv6%2Fraw.c;h=970529e4754a27f1b19eeb10591c50d9ed64fc9a;hb=e5ba31f11f6cae785e893d5d10abd612fef0b6bc;hp=77167afa3455a162fae611ce7fbbdeec764d949a;hpb=3ef9d943d26dea764f4fecf3767001c90b778b0c;p=safe%2Fjmp%2Flinux-2.6 diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 77167af..970529e 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -35,6 +35,7 @@ #include #include +#include #include #include #include @@ -53,39 +54,31 @@ #include #endif +#include #include #include #include #include -struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE]; -DEFINE_RWLOCK(raw_v6_lock); +static struct raw_hashinfo raw_v6_hashinfo = { + .lock = __RW_LOCK_UNLOCKED(), +}; static void raw_v6_hash(struct sock *sk) { - struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num & - (RAWV6_HTABLE_SIZE - 1)]; - - write_lock_bh(&raw_v6_lock); - sk_add_node(sk, list); - sock_prot_inc_use(sk->sk_prot); - write_unlock_bh(&raw_v6_lock); + raw_hash_sk(sk, &raw_v6_hashinfo); } static void raw_v6_unhash(struct sock *sk) { - write_lock_bh(&raw_v6_lock); - if (sk_del_node_init(sk)) - sock_prot_dec_use(sk->sk_prot); - write_unlock_bh(&raw_v6_lock); + raw_unhash_sk(sk, &raw_v6_hashinfo); } -/* Grumble... icmp and ip_input want to get at this... */ -struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num, - struct in6_addr *loc_addr, struct in6_addr *rmt_addr, - int dif) +static struct sock *__raw_v6_lookup(struct net *net, struct sock *sk, + unsigned short num, struct in6_addr *loc_addr, + struct in6_addr *rmt_addr, int dif) { struct hlist_node *node; int is_multicast = ipv6_addr_is_multicast(loc_addr); @@ -94,6 +87,9 @@ struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num, if (inet_sk(sk)->num == num) { struct ipv6_pinfo *np = inet6_sk(sk); + if (sk->sk_net != net) + continue; + if (!ipv6_addr_any(&np->daddr) && !ipv6_addr_equal(&np->daddr, rmt_addr)) continue; @@ -166,21 +162,22 @@ EXPORT_SYMBOL(rawv6_mh_filter_unregister); * * Caller owns SKB so we must make clones. */ -int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) +static int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) { struct in6_addr *saddr; struct in6_addr *daddr; struct sock *sk; int delivered = 0; __u8 hash; + struct net *net; saddr = &ipv6_hdr(skb)->saddr; daddr = saddr + 1; hash = nexthdr & (MAX_INET_PROTOS - 1); - read_lock(&raw_v6_lock); - sk = sk_head(&raw_v6_htable[hash]); + read_lock(&raw_v6_hashinfo.lock); + sk = sk_head(&raw_v6_hashinfo.ht[hash]); /* * The first socket found will be delivered after @@ -190,7 +187,8 @@ int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) if (sk == NULL) goto out; - sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif); + net = skb->dev->nd_net; + sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif); while (sk) { int filtered; @@ -233,14 +231,25 @@ int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) rawv6_rcv(sk, clone); } } - sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr, + sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr, IP6CB(skb)->iif); } out: - read_unlock(&raw_v6_lock); + read_unlock(&raw_v6_hashinfo.lock); return delivered; } +int raw6_local_deliver(struct sk_buff *skb, int nexthdr) +{ + struct sock *raw_sk; + + raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]); + if (raw_sk && !ipv6_raw_deliver(skb, nexthdr)) + raw_sk = NULL; + + return raw_sk != NULL; +} + /* This cleans up af_inet6 a bit. -DaveM */ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) { @@ -282,7 +291,7 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) if (!sk->sk_bound_dev_if) goto out; - dev = dev_get_by_index(sk->sk_bound_dev_if); + dev = dev_get_by_index(sk->sk_net, sk->sk_bound_dev_if); if (!dev) { err = -ENODEV; goto out; @@ -295,7 +304,8 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) v4addr = LOOPBACK4_IPV6; if (!(addr_type & IPV6_ADDR_MULTICAST)) { err = -EADDRNOTAVAIL; - if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) { + if (!ipv6_chk_addr(sk->sk_net, &addr->sin6_addr, + dev, 0)) { if (dev) dev_put(dev); goto out; @@ -315,7 +325,7 @@ out: return err; } -void rawv6_err(struct sock *sk, struct sk_buff *skb, +static void rawv6_err(struct sock *sk, struct sk_buff *skb, struct inet6_skb_parm *opt, int type, int code, int offset, __be32 info) { @@ -349,18 +359,45 @@ void rawv6_err(struct sock *sk, struct sk_buff *skb, } } +void raw6_icmp_error(struct sk_buff *skb, int nexthdr, + int type, int code, int inner_offset, __be32 info) +{ + struct sock *sk; + int hash; + struct in6_addr *saddr, *daddr; + struct net *net; + + hash = nexthdr & (RAW_HTABLE_SIZE - 1); + + read_lock(&raw_v6_hashinfo.lock); + sk = sk_head(&raw_v6_hashinfo.ht[hash]); + if (sk != NULL) { + saddr = &ipv6_hdr(skb)->saddr; + daddr = &ipv6_hdr(skb)->daddr; + net = skb->dev->nd_net; + + while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr, + IP6CB(skb)->iif))) { + rawv6_err(sk, skb, NULL, type, code, + inner_offset, info); + sk = sk_next(sk); + } + } + read_unlock(&raw_v6_hashinfo.lock); +} + static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb) { if ((raw6_sk(sk)->checksum || sk->sk_filter) && skb_checksum_complete(skb)) { - /* FIXME: increment a raw6 drops counter here */ + atomic_inc(&sk->sk_drops); kfree_skb(skb); return 0; } /* Charge it to the socket. */ if (sock_queue_rcv_skb(sk,skb)<0) { - /* FIXME: increment a raw6 drops counter here */ + atomic_inc(&sk->sk_drops); kfree_skb(skb); return 0; } @@ -381,6 +418,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) struct raw6_sock *rp = raw6_sk(sk); if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) { + atomic_inc(&sk->sk_drops); kfree_skb(skb); return NET_RX_DROP; } @@ -404,7 +442,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) if (inet->hdrincl) { if (skb_checksum_complete(skb)) { - /* FIXME: increment a raw6 drops counter here */ + atomic_inc(&sk->sk_drops); kfree_skb(skb); return 0; } @@ -495,7 +533,7 @@ csum_copy_err: as some normal condition. */ err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH; - /* FIXME: increment a raw6 drops counter here */ + atomic_inc(&sk->sk_drops); goto out; } @@ -617,7 +655,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length, goto error_fault; IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS); - err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, rt->u.dst.dev, + err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev, dst_output); if (err > 0) err = np->recverr ? net_xmit_errno(err) : 0; @@ -842,7 +880,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, if (final_p) ipv6_addr_copy(&fl.fl6_dst, final_p); - if ((err = __xfrm_lookup(&dst, &fl, sk, 1)) < 0) { + if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) { if (err == -EREMOTE) err = ip6_dst_blackhole(sk, &dst, &fl); if (err < 0) @@ -1143,6 +1181,8 @@ static int rawv6_init_sk(struct sock *sk) return(0); } +DEFINE_PROTO_INUSE(rawv6) + struct proto rawv6_prot = { .name = "RAWv6", .owner = THIS_MODULE, @@ -1165,79 +1205,10 @@ struct proto rawv6_prot = { .compat_setsockopt = compat_rawv6_setsockopt, .compat_getsockopt = compat_rawv6_getsockopt, #endif + REF_PROTO_INUSE(rawv6) }; #ifdef CONFIG_PROC_FS -struct raw6_iter_state { - int bucket; -}; - -#define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private) - -static struct sock *raw6_get_first(struct seq_file *seq) -{ - struct sock *sk; - struct hlist_node *node; - struct raw6_iter_state* state = raw6_seq_private(seq); - - for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket) - sk_for_each(sk, node, &raw_v6_htable[state->bucket]) - if (sk->sk_family == PF_INET6) - goto out; - sk = NULL; -out: - return sk; -} - -static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk) -{ - struct raw6_iter_state* state = raw6_seq_private(seq); - - do { - sk = sk_next(sk); -try_again: - ; - } while (sk && sk->sk_family != PF_INET6); - - if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) { - sk = sk_head(&raw_v6_htable[state->bucket]); - goto try_again; - } - return sk; -} - -static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos) -{ - struct sock *sk = raw6_get_first(seq); - if (sk) - while (pos && (sk = raw6_get_next(seq, sk)) != NULL) - --pos; - return pos ? NULL : sk; -} - -static void *raw6_seq_start(struct seq_file *seq, loff_t *pos) -{ - read_lock(&raw_v6_lock); - return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; -} - -static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos) -{ - struct sock *sk; - - if (v == SEQ_START_TOKEN) - sk = raw6_get_first(seq); - else - sk = raw6_get_next(seq, v); - ++*pos; - return sk; -} - -static void raw6_seq_stop(struct seq_file *seq, void *v) -{ - read_unlock(&raw_v6_lock); -} - static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) { struct ipv6_pinfo *np = inet6_sk(sp); @@ -1250,7 +1221,7 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) srcp = inet_sk(sp)->num; seq_printf(seq, "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X " - "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n", + "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n", i, src->s6_addr32[0], src->s6_addr32[1], src->s6_addr32[2], src->s6_addr32[3], srcp, @@ -1262,7 +1233,7 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), - atomic_read(&sp->sk_refcnt), sp); + atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); } static int raw6_seq_show(struct seq_file *seq, void *v) @@ -1273,36 +1244,22 @@ static int raw6_seq_show(struct seq_file *seq, void *v) "local_address " "remote_address " "st tx_queue rx_queue tr tm->when retrnsmt" - " uid timeout inode\n"); + " uid timeout inode drops\n"); else - raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket); + raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); return 0; } static const struct seq_operations raw6_seq_ops = { - .start = raw6_seq_start, - .next = raw6_seq_next, - .stop = raw6_seq_stop, + .start = raw_seq_start, + .next = raw_seq_next, + .stop = raw_seq_stop, .show = raw6_seq_show, }; static int raw6_seq_open(struct inode *inode, struct file *file) { - struct seq_file *seq; - int rc = -ENOMEM; - struct raw6_iter_state *s = kzalloc(sizeof(*s), GFP_KERNEL); - if (!s) - goto out; - rc = seq_open(file, &raw6_seq_ops); - if (rc) - goto out_kfree; - seq = file->private_data; - seq->private = s; -out: - return rc; -out_kfree: - kfree(s); - goto out; + return raw_seq_open(inode, file, &raw_v6_hashinfo, PF_INET6); } static const struct file_operations raw6_seq_fops = { @@ -1310,18 +1267,70 @@ static const struct file_operations raw6_seq_fops = { .open = raw6_seq_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release_private, + .release = seq_release_net, }; int __init raw6_proc_init(void) { - if (!proc_net_fops_create("raw6", S_IRUGO, &raw6_seq_fops)) + if (!proc_net_fops_create(&init_net, "raw6", S_IRUGO, &raw6_seq_fops)) return -ENOMEM; return 0; } void raw6_proc_exit(void) { - proc_net_remove("raw6"); + proc_net_remove(&init_net, "raw6"); } #endif /* CONFIG_PROC_FS */ + +/* Same as inet6_dgram_ops, sans udp_poll. */ +static const struct proto_ops inet6_sockraw_ops = { + .family = PF_INET6, + .owner = THIS_MODULE, + .release = inet6_release, + .bind = inet6_bind, + .connect = inet_dgram_connect, /* ok */ + .socketpair = sock_no_socketpair, /* a do nothing */ + .accept = sock_no_accept, /* a do nothing */ + .getname = inet6_getname, + .poll = datagram_poll, /* ok */ + .ioctl = inet6_ioctl, /* must change */ + .listen = sock_no_listen, /* ok */ + .shutdown = inet_shutdown, /* ok */ + .setsockopt = sock_common_setsockopt, /* ok */ + .getsockopt = sock_common_getsockopt, /* ok */ + .sendmsg = inet_sendmsg, /* ok */ + .recvmsg = sock_common_recvmsg, /* ok */ + .mmap = sock_no_mmap, + .sendpage = sock_no_sendpage, +#ifdef CONFIG_COMPAT + .compat_setsockopt = compat_sock_common_setsockopt, + .compat_getsockopt = compat_sock_common_getsockopt, +#endif +}; + +static struct inet_protosw rawv6_protosw = { + .type = SOCK_RAW, + .protocol = IPPROTO_IP, /* wild card */ + .prot = &rawv6_prot, + .ops = &inet6_sockraw_ops, + .capability = CAP_NET_RAW, + .no_check = UDP_CSUM_DEFAULT, + .flags = INET_PROTOSW_REUSE, +}; + +int __init rawv6_init(void) +{ + int ret; + + ret = inet6_register_protosw(&rawv6_protosw); + if (ret) + goto out; +out: + return ret; +} + +void rawv6_exit(void) +{ + inet6_unregister_protosw(&rawv6_protosw); +}