diff options
| -rw-r--r-- | include/net/sock.h | 2 | ||||
| -rw-r--r-- | include/net/udp.h | 25 | ||||
| -rw-r--r-- | include/net/udplite.h | 2 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 207 | ||||
| -rw-r--r-- | net/ipv4/udp_impl.h | 4 | ||||
| -rw-r--r-- | net/ipv4/udplite.c | 13 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 112 | ||||
| -rw-r--r-- | net/ipv6/udp_impl.h | 4 | ||||
| -rw-r--r-- | net/ipv6/udplite.c | 8 |
9 files changed, 214 insertions, 163 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index d6b750a2507..d200dfbe1ef 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -599,7 +599,7 @@ struct proto { union { struct inet_hashinfo *hashinfo; - struct hlist_head *udp_hash; + struct udp_table *udp_table; struct raw_hashinfo *raw_hash; } h; diff --git a/include/net/udp.h b/include/net/udp.h index 1e205095ea6..df2bfe54537 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -50,8 +50,15 @@ struct udp_skb_cb { }; #define UDP_SKB_CB(__skb) ((struct udp_skb_cb *)((__skb)->cb)) -extern struct hlist_head udp_hash[UDP_HTABLE_SIZE]; -extern rwlock_t udp_hash_lock; +struct udp_hslot { + struct hlist_head head; + spinlock_t lock; +} __attribute__((aligned(2 * sizeof(long)))); +struct udp_table { + struct udp_hslot hash[UDP_HTABLE_SIZE]; +}; +extern struct udp_table udp_table; +extern void udp_table_init(struct udp_table *); /* Note: this must match 'valbool' in sock_setsockopt */ @@ -110,15 +117,7 @@ static inline void udp_lib_hash(struct sock *sk) BUG(); } -static inline void udp_lib_unhash(struct sock *sk) -{ - write_lock_bh(&udp_hash_lock); - if (sk_del_node_init(sk)) { - inet_sk(sk)->num = 0; - sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); - } - write_unlock_bh(&udp_hash_lock); -} +extern void udp_lib_unhash(struct sock *sk); static inline void udp_lib_close(struct sock *sk, long timeout) { @@ -187,7 +186,7 @@ extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, struct udp_seq_afinfo { char *name; sa_family_t family; - struct hlist_head *hashtable; + struct udp_table *udp_table; struct file_operations seq_fops; struct seq_operations seq_ops; }; @@ -196,7 +195,7 @@ struct udp_iter_state { struct seq_net_private p; sa_family_t family; int bucket; - struct hlist_head *hashtable; + struct udp_table *udp_table; }; #ifdef CONFIG_PROC_FS diff --git a/include/net/udplite.h b/include/net/udplite.h index b76b2e377af..afdffe607b2 100644 --- a/include/net/udplite.h +++ b/include/net/udplite.h @@ -11,7 +11,7 @@ #define UDPLITE_RECV_CSCOV 11 /* receiver partial coverage (threshold ) */ extern struct proto udplite_prot; -extern struct hlist_head udplite_hash[UDP_HTABLE_SIZE]; +extern struct udp_table udplite_table; /* * Checksum computation is all in software, hence simpler getfrag. diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 2095abc3cab..2a6c491f97d 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -104,12 +104,8 @@ #include <net/xfrm.h> #include "udp_impl.h" -/* - * Snmp MIB for the UDP layer - */ - -struct hlist_head udp_hash[UDP_HTABLE_SIZE]; -DEFINE_RWLOCK(udp_hash_lock); +struct udp_table udp_table; +EXPORT_SYMBOL(udp_table); int sysctl_udp_mem[3] __read_mostly; int sysctl_udp_rmem_min __read_mostly; @@ -123,7 +119,7 @@ atomic_t udp_memory_allocated; EXPORT_SYMBOL(udp_memory_allocated); static int udp_lib_lport_inuse(struct net *net, __u16 num, - const struct hlist_head udptable[], + const struct udp_hslot *hslot, struct sock *sk, int (*saddr_comp)(const struct sock *sk1, const struct sock *sk2)) @@ -131,7 +127,7 @@ static int udp_lib_lport_inuse(struct net *net, __u16 num, struct sock *sk2; struct hlist_node *node; - sk_for_each(sk2, node, &udptable[udp_hashfn(net, num)]) + sk_for_each(sk2, node, &hslot->head) if (net_eq(sock_net(sk2), net) && sk2 != sk && sk2->sk_hash == num && @@ -154,12 +150,11 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum, int (*saddr_comp)(const struct sock *sk1, const struct sock *sk2 ) ) { - struct hlist_head *udptable = sk->sk_prot->h.udp_hash; + struct udp_hslot *hslot; + struct udp_table *udptable = sk->sk_prot->h.udp_table; int error = 1; struct net *net = sock_net(sk); - write_lock_bh(&udp_hash_lock); - if (!snum) { int low, high, remaining; unsigned rand; @@ -171,26 +166,34 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum, rand = net_random(); snum = first = rand % remaining + low; rand |= 1; - while (udp_lib_lport_inuse(net, snum, udptable, sk, - saddr_comp)) { + for (;;) { + hslot = &udptable->hash[udp_hashfn(net, snum)]; + spin_lock_bh(&hslot->lock); + if (!udp_lib_lport_inuse(net, snum, hslot, sk, saddr_comp)) + break; + spin_unlock_bh(&hslot->lock); do { snum = snum + rand; } while (snum < low || snum > high); if (snum == first) goto fail; } - } else if (udp_lib_lport_inuse(net, snum, udptable, sk, saddr_comp)) - goto fail; - + } else { + hslot = &udptable->hash[udp_hashfn(net, snum)]; + spin_lock_bh(&hslot->lock); + if (udp_lib_lport_inuse(net, snum, hslot, sk, saddr_comp)) + goto fail_unlock; + } inet_sk(sk)->num = snum; sk->sk_hash = snum; if (sk_unhashed(sk)) { - sk_add_node(sk, &udptable[udp_hashfn(net, snum)]); + sk_add_node(sk, &hslot->head); sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); } error = 0; +fail_unlock: + spin_unlock_bh(&hslot->lock); fail: - write_unlock_bh(&udp_hash_lock); return error; } @@ -208,63 +211,73 @@ int udp_v4_get_port(struct sock *sk, unsigned short snum) return udp_lib_get_port(sk, snum, ipv4_rcv_saddr_equal); } +static inline int compute_score(struct sock *sk, struct net *net, __be32 saddr, + unsigned short hnum, + __be16 sport, __be32 daddr, __be16 dport, int dif) +{ + int score = -1; + + if (net_eq(sock_net(sk), net) && sk->sk_hash == hnum && + !ipv6_only_sock(sk)) { + struct inet_sock *inet = inet_sk(sk); + + score = (sk->sk_family == PF_INET ? 1 : 0); + if (inet->rcv_saddr) { + if (inet->rcv_saddr != daddr) + return -1; + score += 2; + } + if (inet->daddr) { + if (inet->daddr != saddr) + return -1; + score += 2; + } + if (inet->dport) { + if (inet->dport != sport) + return -1; + score += 2; + } + if (sk->sk_bound_dev_if) { + if (sk->sk_bound_dev_if != dif) + return -1; + score += 2; + } + } + return score; +} + /* UDP is nearly always wildcards out the wazoo, it makes no sense to try * harder than this. -DaveM */ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, - int dif, struct hlist_head udptable[]) + int dif, struct udp_table *udptable) { struct sock *sk, *result = NULL; struct hlist_node *node; unsigned short hnum = ntohs(dport); - int badness = -1; - - read_lock(&udp_hash_lock); - sk_for_each(sk, node, &udptable[udp_hashfn(net, hnum)]) { - struct inet_sock *inet = inet_sk(sk); - - if (net_eq(sock_net(sk), net) && sk->sk_hash == hnum && - !ipv6_only_sock(sk)) { - int score = (sk->sk_family == PF_INET ? 1 : 0); - if (inet->rcv_saddr) { - if (inet->rcv_saddr != daddr) - continue; - score+=2; - } - if (inet->daddr) { - if (inet->daddr != saddr) - continue; - score+=2; - } - if (inet->dport) { - if (inet->dport != sport) - continue; - score+=2; - } - if (sk->sk_bound_dev_if) { - if (sk->sk_bound_dev_if != dif) - continue; - score+=2; - } - if (score == 9) { - result = sk; - break; - } else if (score > badness) { - result = sk; - badness = score; - } + unsigned int hash = udp_hashfn(net, hnum); + struct udp_hslot *hslot = &udptable->hash[hash]; + int score, badness = -1; + + spin_lock(&hslot->lock); + sk_for_each(sk, node, &hslot->head) { + score = compute_score(sk, net, saddr, hnum, sport, + daddr, dport, dif); + if (score > badness) { + result = sk; + badness = score; } } if (result) sock_hold(result); - read_unlock(&udp_hash_lock); + spin_unlock(&hslot->lock); return result; } static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb, __be16 sport, __be16 dport, - struct hlist_head udptable[]) + struct udp_table *udptable) { struct sock *sk; const struct iphdr *iph = ip_hdr(skb); @@ -280,7 +293,7 @@ static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb, struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif) { - return __udp4_lib_lookup(net, saddr, sport, daddr, dport, dif, udp_hash); + return __udp4_lib_lookup(net, saddr, sport, daddr, dport, dif, &udp_table); } EXPORT_SYMBOL_GPL(udp4_lib_lookup); @@ -323,7 +336,7 @@ found: * to find the appropriate port. */ -void __udp4_lib_err(struct sk_buff *skb, u32 info, struct hlist_head udptable[]) +void __udp4_lib_err(struct sk_buff *skb, u32 info, struct udp_table *udptable) { struct inet_sock *inet; struct iphdr *iph = (struct iphdr*)skb->data; @@ -392,7 +405,7 @@ out: void udp_err(struct sk_buff *skb, u32 info) { - __udp4_lib_err(skb, info, udp_hash); + __udp4_lib_err(skb, info, &udp_table); } /* @@ -933,6 +946,21 @@ int udp_disconnect(struct sock *sk, int flags) return 0; } +void udp_lib_unhash(struct sock *sk) +{ + struct udp_table *udptable = sk->sk_prot->h.udp_table; + unsigned int hash = udp_hashfn(sock_net(sk), sk->sk_hash); + struct udp_hslot *hslot = &udptable->hash[hash]; + + spin_lock(&hslot->lock); + if (sk_del_node_init(sk)) { + inet_sk(sk)->num = 0; + sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); + } + spin_unlock(&hslot->lock); +} +EXPORT_SYMBOL(udp_lib_unhash); + static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) { int is_udplite = IS_UDPLITE(sk); @@ -1071,13 +1099,14 @@ drop: static int __udp4_lib_mcast_deliver(struct net *net, struct sk_buff *skb, struct udphdr *uh, __be32 saddr, __be32 daddr, - struct hlist_head udptable[]) + struct udp_table *udptable) { struct sock *sk; + struct udp_hslot *hslot = &udptable->hash[udp_hashfn(net, ntohs(uh->dest))]; int dif; - read_lock(&udp_hash_lock); - sk = sk_head(&udptable[udp_hashfn(net, ntohs(uh->dest))]); + spin_lock(&hslot->lock); + sk = sk_head(&hslot->head); dif = skb->dev->ifindex; sk = udp_v4_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif); if (sk) { @@ -1102,7 +1131,7 @@ static int __udp4_lib_mcast_deliver(struct net *net, struct sk_buff *skb, } while (sknext); } else kfree_skb(skb); - read_unlock(&udp_hash_lock); + spin_unlock(&hslot->lock); return 0; } @@ -1148,7 +1177,7 @@ static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh, * All we need to do is get the socket, and then do a checksum. */ -int __udp4_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[], +int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, int proto) { struct sock *sk; @@ -1246,7 +1275,7 @@ drop: int udp_rcv(struct sk_buff *skb) { - return __udp4_lib_rcv(skb, udp_hash, IPPROTO_UDP); + return __udp4_lib_rcv(skb, &udp_table, IPPROTO_UDP); } void udp_destroy_sock(struct sock *sk) @@ -1488,7 +1517,7 @@ struct proto udp_prot = { .sysctl_wmem = &sysctl_udp_wmem_min, .sysctl_rmem = &sysctl_udp_rmem_min, .obj_size = sizeof(struct udp_sock), - .h.udp_hash = udp_hash, + .h.udp_table = &udp_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udp_setsockopt, .compat_getsockopt = compat_udp_getsockopt, @@ -1498,20 +1527,23 @@ struct proto udp_prot = { /* ------------------------------------------------------------------------ */ #ifdef CONFIG_PROC_FS -static struct sock *udp_get_first(struct seq_file *seq) +static struct sock *udp_get_first(struct seq_file *seq, int start) { struct sock *sk; struct udp_iter_state *state = seq->private; struct net *net = seq_file_net(seq); - for (state->bucket = 0; state->bucket < UDP_HTABLE_SIZE; ++state->bucket) { + for (state->bucket = start; state->bucket < UDP_HTABLE_SIZE; ++state->bucket) { struct hlist_node *node; - sk_for_each(sk, node, state->hashtable + state->bucket) { + struct udp_hslot *hslot = &state->udp_table->hash[state->bucket]; + spin_lock_bh(&hslot->lock); + sk_for_each(sk, node, &hslot->head) { if (!net_eq(sock_net(sk), net)) continue; if (sk->sk_family == state->family) goto found; } + spin_unlock_bh(&hslot->lock); } sk = NULL; found: @@ -1525,20 +1557,18 @@ static struct sock *udp_get_next(struct seq_file *seq, struct sock *sk) do { sk = sk_next(sk); -try_again: - ; } while (sk && (!net_eq(sock_net(sk), net) || sk->sk_family != state->family)); - if (!sk && ++state->bucket < UDP_HTABLE_SIZE) { - sk = sk_head(state->hashtable + state->bucket); - goto try_again; + if (!sk) { + spin_unlock(&state->udp_table->hash[state->bucket].lock); + return udp_get_first(seq, state->bucket + 1); } return sk; } static struct sock *udp_get_idx(struct seq_file *seq, loff_t pos) { - struct sock *sk = udp_get_first(seq); + struct sock *sk = udp_get_first(seq, 0); if (sk) while (pos && (sk = udp_get_next(seq, sk)) != NULL) @@ -1547,9 +1577,7 @@ static struct sock *udp_get_idx(struct seq_file *seq, loff_t pos) } static void *udp_seq_start(struct seq_file *seq, loff_t *pos) - __acquires(udp_hash_lock) { - read_lock(&udp_hash_lock); return *pos ? udp_get_idx(seq, *pos-1) : SEQ_START_TOKEN; } @@ -1567,9 +1595,11 @@ static void *udp_seq_next(struct seq_file *seq, void *v, loff_t *pos) } static void udp_seq_stop(struct seq_file *seq, void *v) - __releases(udp_hash_lock) { - read_unlock(&udp_hash_lock); + struct udp_iter_state *state = seq->private; + + if (state->bucket < UDP_HTABLE_SIZE) + spin_unlock_bh(&state->udp_table->hash[state->bucket].lock); } static int udp_seq_open(struct inode *inode, struct file *file) @@ -1585,7 +1615,7 @@ static int udp_seq_open(struct inode *inode, struct file *file) s = ((struct seq_file *)file->private_data)->private; s->family = afinfo->family; - s->hashtable = afinfo->hashtable; + s->udp_table = afinfo->udp_table; return err; } @@ -1657,7 +1687,7 @@ int udp4_seq_show(struct seq_file *seq, void *v) static struct udp_seq_afinfo udp4_seq_afinfo = { .name = "udp", .family = AF_INET, - .hashtable = udp_hash, + .udp_table = &udp_table, .seq_fops = { .owner = THIS_MODULE, }, @@ -1692,10 +1722,21 @@ void udp4_proc_exit(void) } #endif /* CONFIG_PROC_FS */ +void __init udp_table_init(struct udp_table *table) +{ + int i; + + for (i = 0; i < UDP_HTABLE_SIZE; i++) { + INIT_HLIST_HEAD(&table->hash[i].head); + spin_lock_init(&table->hash[i].lock); + } +} + void __init udp_init(void) { unsigned long limit; + udp_table_init(&udp_table); /* Set the pressure threshold up by the same strategy of TCP. It is a * fraction of global memory that is up to 1/2 at 256 MB, decreasing * toward zero with the amount of memory, with a floor of 128 pages. @@ -1712,8 +1753,6 @@ void __init udp_init(void) } EXPORT_SYMBOL(udp_disconnect); -EXPORT_SYMBOL(udp_hash); -EXPORT_SYMBOL(udp_hash_lock); EXPORT_SYMBOL(udp_ioctl); EXPORT_SYMBOL(udp_prot); EXPORT_SYMBOL(udp_sendmsg); diff --git a/net/ipv4/udp_impl.h b/net/ipv4/udp_impl.h index 2e9bad2fa1b..9f4a6165f72 100644 --- a/net/ipv4/udp_impl.h +++ b/net/ipv4/udp_impl.h @@ -5,8 +5,8 @@ #include <net/protocol.h> #include <net/inet_common.h> -extern int __udp4_lib_rcv(struct sk_buff *, struct hlist_head [], int ); -extern void __udp4_lib_err(struct sk_buff *, u32, struct hlist_head []); +extern int __udp4_lib_rcv(struct sk_buff *, struct udp_table *, int ); +extern void __udp4_lib_err(struct sk_buff *, u32, struct udp_table *); extern int udp_v4_get_port(struct sock *sk, unsigned short snum); diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c index 3c807964da9..d8ea8e5f5ea 100644 --- a/net/ipv4/udplite.c +++ b/net/ipv4/udplite.c @@ -12,16 +12,17 @@ */ #include "udp_impl.h" -struct hlist_head udplite_hash[UDP_HTABLE_SIZE]; +struct udp_table udplite_table; +EXPORT_SYMBOL(udplite_table); static int udplite_rcv(struct sk_buff *skb) { - return __udp4_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE); + return __udp4_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE); } static void udplite_err(struct sk_buff *skb, u32 info) { - __udp4_lib_err(skb, info, udplite_hash); + __udp4_lib_err(skb, info, &udplite_table); } static struct net_protocol udplite_protocol = { @@ -50,7 +51,7 @@ struct proto udplite_prot = { .unhash = udp_lib_unhash, .get_port = udp_v4_get_port, .obj_size = sizeof(struct udp_sock), - .h.udp_hash = udplite_hash, + .h.udp_table = &udplite_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udp_setsockopt, .compat_getsockopt = compat_udp_getsockopt, @@ -71,7 +72,7 @@ static struct inet_protosw udplite4_protosw = { static struct udp_seq_afinfo udplite4_seq_afinfo = { .name = "udplite", .family = AF_INET, - .hashtable = udplite_hash, + .udp_table = &udplite_table, .seq_fops = { .owner = THIS_MODULE, }, @@ -108,6 +109,7 @@ static inline int udplite4_proc_init(void) void __init udplite4_register(void) { + udp_table_init(&udplite_table); if (proto_register(&udplite_prot, 1)) goto out_register_err; @@ -126,5 +128,4 @@ out_register_err: printk(KERN_CRIT "%s: Cannot add UDP-Lite protocol.\n", __func__); } -EXPORT_SYMBOL(udplite_hash); EXPORT_SYMBOL(udplite_prot); diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index e51da8c092f..ccee7244ca0 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -54,62 +54,73 @@ int udp_v6_get_port(struct sock *sk, unsigned short snum) return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal); } +static inline int compute_score(struct sock *sk, struct net *net, + unsigned short hnum, + struct in6_addr *saddr, __be16 sport, + struct in6_addr *daddr, __be16 dport, + int dif) +{ + int score = -1; + + if (net_eq(sock_net(sk), net) && sk->sk_hash == hnum && + sk->sk_family == PF_INET6) { + struct ipv6_pinfo *np = inet6_sk(sk); + struct inet_sock *inet = inet_sk(sk); + + score = 0; + if (inet->dport) { + if (inet->dport != sport) + return -1; + score++; + } + if (!ipv6_addr_any(&np->rcv_saddr)) { + if (!ipv6_addr_equal(&np->rcv_saddr, daddr)) + return -1; + score++; + } + if (!ipv6_addr_any(&np->daddr)) { + if (!ipv6_addr_equal(&np->daddr, saddr)) + return -1; + score++; + } + if (sk->sk_bound_dev_if) { + if (sk->sk_bound_dev_if != dif) + return -1; + score++; + } + } + return score; +} + static struct sock *__udp6_lib_lookup(struct net *net, struct in6_addr *saddr, __be16 sport, struct in6_addr *daddr, __be16 dport, - int dif, struct hlist_head udptable[]) + int dif, struct udp_table *udptable) { struct sock *sk, *result = NULL; struct hlist_node *node; unsigned short hnum = ntohs(dport); - int badness = -1; - - read_lock(&udp_hash_lock); - sk_for_each(sk, node, &udptable[udp_hashfn(net, hnum)]) { - struct inet_sock *inet = inet_sk(sk); - - if (net_eq(sock_net(sk), net) && sk->sk_hash == hnum && - sk->sk_family == PF_INET6) { - struct ipv6_pinfo *np = inet6_sk(sk); - int score = 0; - if (inet->dport) { - if (inet->dport != sport) - continue; - score++; - } - if (!ipv6_addr_any(&np->rcv_saddr)) { - if (!ipv6_addr_equal(&np->rcv_saddr, daddr)) - continue; - score++; - } - if (!ipv6_addr_any(&np->daddr)) { - if (!ipv6_addr_equal(&np->daddr, saddr)) - continue; - score++; - } - if (sk->sk_bound_dev_if) { - if (sk->sk_bound_dev_if != dif) - continue; - score++; - } - if (score == 4) { - result = sk; - break; - } else if (score > badness) { - result = sk; - badness = score; - } + unsigned int hash = udp_hashfn(net, hnum); + struct udp_hslot *hslot = &udptable->hash[hash]; + int score, badness = -1; + + spin_lock(&hslot->lock); + sk_for_each(sk, node, &hslot->head) { + score = compute_score(sk, net, hnum, saddr, sport, daddr, dport, dif); + if (score > badness) { + result = sk; + badness = score; } } if (result) sock_hold(result); - read_unlock(&udp_hash_lock); + spin_unlock(&hslot->lock); return result; } static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb, __be16 sport, __be16 dport, - struct hlist_head udptable[]) + struct udp_table *udptable) { struct sock *sk; struct ipv6hdr *iph = ipv6_hdr(skb); @@ -239,7 +250,7 @@ csum_copy_err: void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt, int type, int code, int offset, __be32 info, - struct hlist_head udptable[] ) + struct udp_table *udptable) { struct ipv6_pinfo *np; struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data; @@ -275,7 +286,7 @@ static __inline__ void udpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, int type, int code, int offset, __be32 info ) { - __udp6_lib_err(skb, opt, type, code, offset, info, udp_hash); + __udp6_lib_err(skb, opt, type, code, offset, info, &udp_table); } int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb) @@ -374,14 +385,15 @@ static struct sock *udp_v6_mcast_next(struct sock *sk, */ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb, struct in6_addr *saddr, struct in6_addr *daddr, - struct hlist_head udptable[]) + struct udp_table *udptable) { struct sock *sk, *sk2; const struct udphdr *uh = udp_hdr(skb); + struct udp_hslot *hslot = &udptable->hash[udp_hashfn(net, ntohs(uh->dest))]; int dif; - read_lock(&udp_hash_lock); - sk = sk_head(&udptable[udp_hashfn(net, ntohs(uh->dest))]); + spin_lock(&hslot->lock); + sk = sk_head(&hslot->head); dif = inet6_iif(skb); sk = udp_v6_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif); if (!sk) { @@ -409,7 +421,7 @@ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb, sk_add_backlog(sk, skb); bh_unlock_sock(sk); out: - read_unlock(&udp_hash_lock); + spin_unlock(&hslot->lock); return 0; } @@ -447,7 +459,7 @@ static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, return 0; } -int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[], +int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, int proto) { struct sock *sk; @@ -544,7 +556,7 @@ discard: static __inline__ int udpv6_rcv(struct sk_buff *skb) { - return __udp6_lib_rcv(skb, udp_hash, IPPROTO_UDP); + return __udp6_lib_rcv(skb, &udp_table, IPPROTO_UDP); } /* @@ -1008,7 +1020,7 @@ int udp6_seq_show(struct seq_file *seq, void *v) static struct udp_seq_afinfo udp6_seq_afinfo = { .name = "udp6", .family = AF_INET6, - .hashtable = udp_hash, + .udp_table = &udp_table, .seq_fops = { .owner = THIS_MODULE, }, @@ -1050,7 +1062,7 @@ struct proto udpv6_prot = { .sysctl_wmem = &sysctl_udp_wmem_min, .sysctl_rmem = &sysctl_udp_rmem_min, .obj_size = sizeof(struct udp6_sock), - .h.udp_hash = udp_hash, + .h.udp_table = &udp_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udpv6_setsockopt, .compat_getsockopt = compat_udpv6_getsockopt, diff --git a/net/ipv6/udp_impl.h b/net/ipv6/udp_impl.h index 92dd7da766d..23779208c33 100644 --- a/net/ipv6/udp_impl.h +++ b/net/ipv6/udp_impl.h @@ -7,9 +7,9 @@ #include <net/inet_common.h> #include <net/transp_v6.h> -extern int __udp6_lib_rcv(struct sk_buff *, struct hlist_head [], int ); +extern int __udp6_lib_rcv(struct sk_buff *, struct udp_table *, int ); extern void __udp6_lib_err(struct sk_buff *, struct inet6_skb_parm *, - int , int , int , __be32 , struct hlist_head []); + int , int , int , __be32 , struct udp_table *); extern int udp_v6_get_port(struct sock *sk, unsigned short snum); diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c index 3cd1a1ac3d6..f1e892a99e0 100644 --- a/net/ipv6/udplite.c +++ b/net/ipv6/udplite.c @@ -15,14 +15,14 @@ static int udplitev6_rcv(struct sk_buff *skb) { - return __udp6_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE); + return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE); } static void udplitev6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, int type, int code, int offset, __be32 info) { - __udp6_lib_err(skb, opt, type, code, offset, info, udplite_hash); + __udp6_lib_err(skb, opt, type, code, offset, info, &udplite_table); } static struct inet6_protocol udplitev6_protocol = { @@ -49,7 +49,7 @@ struct proto udplitev6_prot = { .unhash = udp_lib_unhash, .get_port = udp_v6_get_port, .obj_size = sizeof(struct udp6_sock), - .h.udp_hash = udplite_hash, + .h.udp_table = &udplite_table, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udpv6_setsockopt, .compat_getsockopt = compat_udpv6_getsockopt, @@ -95,7 +95,7 @@ void udplitev6_exit(void) static struct udp_seq_afinfo udplite6_seq_afinfo = { .name = "udplite6", .family = AF_INET6, - .hashtable = udplite_hash, + .udp_table = &udplite_table, .seq_fops = { .owner = THIS_MODULE, }, |