raw: use more conventional iterators
In order to prepare the following patch, I change raw v4 & v6 code to use more conventional iterators. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
8670dc33f4
commit
ba44f8182e
@ -20,9 +20,8 @@
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extern struct proto raw_prot;
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extern struct proto raw_prot;
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extern struct raw_hashinfo raw_v4_hashinfo;
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extern struct raw_hashinfo raw_v4_hashinfo;
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struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
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bool raw_v4_match(struct net *net, struct sock *sk, unsigned short num,
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unsigned short num, __be32 raddr,
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__be32 raddr, __be32 laddr, int dif, int sdif);
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__be32 laddr, int dif, int sdif);
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int raw_abort(struct sock *sk, int err);
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int raw_abort(struct sock *sk, int err);
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void raw_icmp_error(struct sk_buff *, int, u32);
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void raw_icmp_error(struct sk_buff *, int, u32);
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@ -5,9 +5,9 @@
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#include <net/protocol.h>
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#include <net/protocol.h>
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extern struct raw_hashinfo raw_v6_hashinfo;
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extern struct raw_hashinfo raw_v6_hashinfo;
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struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
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bool raw_v6_match(struct net *net, struct sock *sk, unsigned short num,
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unsigned short num, const struct in6_addr *loc_addr,
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const struct in6_addr *loc_addr,
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const struct in6_addr *rmt_addr, int dif, int sdif);
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const struct in6_addr *rmt_addr, int dif, int sdif);
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int raw_abort(struct sock *sk, int err);
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int raw_abort(struct sock *sk, int err);
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@ -117,24 +117,19 @@ void raw_unhash_sk(struct sock *sk)
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}
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}
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EXPORT_SYMBOL_GPL(raw_unhash_sk);
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EXPORT_SYMBOL_GPL(raw_unhash_sk);
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struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
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bool raw_v4_match(struct net *net, struct sock *sk, unsigned short num,
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unsigned short num, __be32 raddr, __be32 laddr,
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__be32 raddr, __be32 laddr, int dif, int sdif)
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int dif, int sdif)
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{
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{
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sk_for_each_from(sk) {
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struct inet_sock *inet = inet_sk(sk);
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struct inet_sock *inet = inet_sk(sk);
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if (net_eq(sock_net(sk), net) && inet->inet_num == num &&
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if (net_eq(sock_net(sk), net) && inet->inet_num == num &&
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!(inet->inet_daddr && inet->inet_daddr != raddr) &&
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!(inet->inet_daddr && inet->inet_daddr != raddr) &&
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!(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
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!(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
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raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if, dif, sdif))
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raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if, dif, sdif))
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goto found; /* gotcha */
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return true;
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}
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return false;
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sk = NULL;
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found:
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return sk;
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}
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}
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EXPORT_SYMBOL_GPL(__raw_v4_lookup);
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EXPORT_SYMBOL_GPL(raw_v4_match);
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/*
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/*
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* 0 - deliver
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* 0 - deliver
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@ -168,23 +163,21 @@ static int icmp_filter(const struct sock *sk, const struct sk_buff *skb)
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*/
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*/
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static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
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static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
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{
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{
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struct net *net = dev_net(skb->dev);
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int sdif = inet_sdif(skb);
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int sdif = inet_sdif(skb);
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int dif = inet_iif(skb);
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int dif = inet_iif(skb);
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struct sock *sk;
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struct hlist_head *head;
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struct hlist_head *head;
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int delivered = 0;
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int delivered = 0;
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struct net *net;
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struct sock *sk;
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read_lock(&raw_v4_hashinfo.lock);
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head = &raw_v4_hashinfo.ht[hash];
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head = &raw_v4_hashinfo.ht[hash];
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if (hlist_empty(head))
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if (hlist_empty(head))
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goto out;
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return 0;
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read_lock(&raw_v4_hashinfo.lock);
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net = dev_net(skb->dev);
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sk_for_each(sk, head) {
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sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol,
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if (!raw_v4_match(net, sk, iph->protocol,
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iph->saddr, iph->daddr, dif, sdif);
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iph->saddr, iph->daddr, dif, sdif))
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continue;
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while (sk) {
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delivered = 1;
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delivered = 1;
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if ((iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) &&
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if ((iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) &&
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ip_mc_sf_allow(sk, iph->daddr, iph->saddr,
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ip_mc_sf_allow(sk, iph->daddr, iph->saddr,
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@ -195,31 +188,16 @@ static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
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if (clone)
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if (clone)
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raw_rcv(sk, clone);
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raw_rcv(sk, clone);
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}
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}
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sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
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iph->saddr, iph->daddr,
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dif, sdif);
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}
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}
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out:
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read_unlock(&raw_v4_hashinfo.lock);
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read_unlock(&raw_v4_hashinfo.lock);
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return delivered;
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return delivered;
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}
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}
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int raw_local_deliver(struct sk_buff *skb, int protocol)
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int raw_local_deliver(struct sk_buff *skb, int protocol)
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{
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{
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int hash;
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int hash = protocol & (RAW_HTABLE_SIZE - 1);
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struct sock *raw_sk;
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hash = protocol & (RAW_HTABLE_SIZE - 1);
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raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
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/* If there maybe a raw socket we must check - if not we
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* don't care less
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*/
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if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
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raw_sk = NULL;
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return raw_sk != NULL;
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return raw_v4_input(skb, ip_hdr(skb), hash);
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}
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}
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static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
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static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
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@ -286,29 +264,24 @@ static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
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void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
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void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
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{
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{
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int hash;
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struct net *net = dev_net(skb->dev);;
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struct sock *raw_sk;
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int dif = skb->dev->ifindex;
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int sdif = inet_sdif(skb);
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struct hlist_head *head;
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const struct iphdr *iph;
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const struct iphdr *iph;
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struct net *net;
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struct sock *sk;
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int hash;
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hash = protocol & (RAW_HTABLE_SIZE - 1);
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hash = protocol & (RAW_HTABLE_SIZE - 1);
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head = &raw_v4_hashinfo.ht[hash];
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read_lock(&raw_v4_hashinfo.lock);
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read_lock(&raw_v4_hashinfo.lock);
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raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
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sk_for_each(sk, head) {
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if (raw_sk) {
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int dif = skb->dev->ifindex;
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int sdif = inet_sdif(skb);
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iph = (const struct iphdr *)skb->data;
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iph = (const struct iphdr *)skb->data;
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net = dev_net(skb->dev);
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if (!raw_v4_match(net, sk, iph->protocol,
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iph->saddr, iph->daddr, dif, sdif))
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while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol,
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continue;
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iph->daddr, iph->saddr,
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raw_err(sk, skb, info);
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dif, sdif)) != NULL) {
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raw_err(raw_sk, skb, info);
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raw_sk = sk_next(raw_sk);
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iph = (const struct iphdr *)skb->data;
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}
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}
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}
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read_unlock(&raw_v4_hashinfo.lock);
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read_unlock(&raw_v4_hashinfo.lock);
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}
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}
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@ -34,31 +34,30 @@ raw_get_hashinfo(const struct inet_diag_req_v2 *r)
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* use helper to figure it out.
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* use helper to figure it out.
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*/
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*/
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static struct sock *raw_lookup(struct net *net, struct sock *from,
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static bool raw_lookup(struct net *net, struct sock *sk,
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const struct inet_diag_req_v2 *req)
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const struct inet_diag_req_v2 *req)
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{
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{
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struct inet_diag_req_raw *r = (void *)req;
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struct inet_diag_req_raw *r = (void *)req;
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struct sock *sk = NULL;
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if (r->sdiag_family == AF_INET)
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if (r->sdiag_family == AF_INET)
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sk = __raw_v4_lookup(net, from, r->sdiag_raw_protocol,
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return raw_v4_match(net, sk, r->sdiag_raw_protocol,
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r->id.idiag_dst[0],
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r->id.idiag_dst[0],
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r->id.idiag_src[0],
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r->id.idiag_src[0],
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r->id.idiag_if, 0);
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r->id.idiag_if, 0);
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#if IS_ENABLED(CONFIG_IPV6)
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#if IS_ENABLED(CONFIG_IPV6)
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else
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else
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sk = __raw_v6_lookup(net, from, r->sdiag_raw_protocol,
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return raw_v6_match(net, sk, r->sdiag_raw_protocol,
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(const struct in6_addr *)r->id.idiag_src,
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(const struct in6_addr *)r->id.idiag_src,
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(const struct in6_addr *)r->id.idiag_dst,
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(const struct in6_addr *)r->id.idiag_dst,
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r->id.idiag_if, 0);
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r->id.idiag_if, 0);
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#endif
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#endif
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return sk;
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return false;
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}
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}
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static struct sock *raw_sock_get(struct net *net, const struct inet_diag_req_v2 *r)
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static struct sock *raw_sock_get(struct net *net, const struct inet_diag_req_v2 *r)
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{
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{
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struct raw_hashinfo *hashinfo = raw_get_hashinfo(r);
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struct raw_hashinfo *hashinfo = raw_get_hashinfo(r);
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struct sock *sk = NULL, *s;
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struct sock *sk;
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int slot;
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int slot;
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if (IS_ERR(hashinfo))
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if (IS_ERR(hashinfo))
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@ -66,9 +65,8 @@ static struct sock *raw_sock_get(struct net *net, const struct inet_diag_req_v2
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read_lock(&hashinfo->lock);
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read_lock(&hashinfo->lock);
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for (slot = 0; slot < RAW_HTABLE_SIZE; slot++) {
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for (slot = 0; slot < RAW_HTABLE_SIZE; slot++) {
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sk_for_each(s, &hashinfo->ht[slot]) {
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sk_for_each(sk, &hashinfo->ht[slot]) {
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sk = raw_lookup(net, s, r);
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if (raw_lookup(net, sk, r)) {
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if (sk) {
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/*
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/*
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* Grab it and keep until we fill
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* Grab it and keep until we fill
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* diag meaage to be reported, so
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* diag meaage to be reported, so
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@ -81,10 +79,11 @@ static struct sock *raw_sock_get(struct net *net, const struct inet_diag_req_v2
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}
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}
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}
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}
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}
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}
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sk = ERR_PTR(-ENOENT);
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out_unlock:
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out_unlock:
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read_unlock(&hashinfo->lock);
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read_unlock(&hashinfo->lock);
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return sk ? sk : ERR_PTR(-ENOENT);
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return sk;
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}
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}
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static int raw_diag_dump_one(struct netlink_callback *cb,
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static int raw_diag_dump_one(struct netlink_callback *cb,
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101
net/ipv6/raw.c
101
net/ipv6/raw.c
@ -66,41 +66,27 @@ struct raw_hashinfo raw_v6_hashinfo = {
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};
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};
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EXPORT_SYMBOL_GPL(raw_v6_hashinfo);
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EXPORT_SYMBOL_GPL(raw_v6_hashinfo);
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struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
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bool raw_v6_match(struct net *net, struct sock *sk, unsigned short num,
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unsigned short num, const struct in6_addr *loc_addr,
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const struct in6_addr *loc_addr,
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const struct in6_addr *rmt_addr, int dif, int sdif)
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const struct in6_addr *rmt_addr, int dif, int sdif)
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{
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{
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bool is_multicast = ipv6_addr_is_multicast(loc_addr);
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if (inet_sk(sk)->inet_num != num ||
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!net_eq(sock_net(sk), net) ||
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(!ipv6_addr_any(&sk->sk_v6_daddr) &&
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!ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr)) ||
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!raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if,
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dif, sdif))
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return false;
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sk_for_each_from(sk)
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if (ipv6_addr_any(&sk->sk_v6_rcv_saddr) ||
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if (inet_sk(sk)->inet_num == num) {
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ipv6_addr_equal(&sk->sk_v6_rcv_saddr, loc_addr) ||
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(ipv6_addr_is_multicast(loc_addr) &&
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inet6_mc_check(sk, loc_addr, rmt_addr)))
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return true;
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if (!net_eq(sock_net(sk), net))
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return false;
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continue;
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if (!ipv6_addr_any(&sk->sk_v6_daddr) &&
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!ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr))
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continue;
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if (!raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if,
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dif, sdif))
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continue;
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if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
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if (ipv6_addr_equal(&sk->sk_v6_rcv_saddr, loc_addr))
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goto found;
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if (is_multicast &&
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inet6_mc_check(sk, loc_addr, rmt_addr))
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goto found;
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continue;
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}
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goto found;
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}
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sk = NULL;
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found:
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return sk;
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}
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}
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EXPORT_SYMBOL_GPL(__raw_v6_lookup);
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EXPORT_SYMBOL_GPL(raw_v6_match);
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/*
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/*
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* 0 - deliver
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* 0 - deliver
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@ -156,31 +142,28 @@ EXPORT_SYMBOL(rawv6_mh_filter_unregister);
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*/
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*/
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static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
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static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
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{
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{
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struct net *net = dev_net(skb->dev);
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const struct in6_addr *saddr;
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const struct in6_addr *saddr;
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const struct in6_addr *daddr;
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const struct in6_addr *daddr;
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struct hlist_head *head;
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struct sock *sk;
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struct sock *sk;
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bool delivered = false;
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bool delivered = false;
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__u8 hash;
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__u8 hash;
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struct net *net;
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saddr = &ipv6_hdr(skb)->saddr;
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saddr = &ipv6_hdr(skb)->saddr;
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daddr = saddr + 1;
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daddr = saddr + 1;
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hash = nexthdr & (RAW_HTABLE_SIZE - 1);
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hash = nexthdr & (RAW_HTABLE_SIZE - 1);
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head = &raw_v6_hashinfo.ht[hash];
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if (hlist_empty(head))
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return false;
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read_lock(&raw_v6_hashinfo.lock);
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read_lock(&raw_v6_hashinfo.lock);
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sk = sk_head(&raw_v6_hashinfo.ht[hash]);
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sk_for_each(sk, head) {
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if (!sk)
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goto out;
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net = dev_net(skb->dev);
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sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr,
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inet6_iif(skb), inet6_sdif(skb));
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while (sk) {
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int filtered;
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int filtered;
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if (!raw_v6_match(net, sk, nexthdr, daddr, saddr,
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inet6_iif(skb), inet6_sdif(skb)))
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continue;
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delivered = true;
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delivered = true;
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switch (nexthdr) {
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switch (nexthdr) {
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case IPPROTO_ICMPV6:
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case IPPROTO_ICMPV6:
|
||||||
@ -219,23 +202,14 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
|
|||||||
rawv6_rcv(sk, clone);
|
rawv6_rcv(sk, clone);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
|
|
||||||
inet6_iif(skb), inet6_sdif(skb));
|
|
||||||
}
|
}
|
||||||
out:
|
|
||||||
read_unlock(&raw_v6_hashinfo.lock);
|
read_unlock(&raw_v6_hashinfo.lock);
|
||||||
return delivered;
|
return delivered;
|
||||||
}
|
}
|
||||||
|
|
||||||
bool raw6_local_deliver(struct sk_buff *skb, int nexthdr)
|
bool raw6_local_deliver(struct sk_buff *skb, int nexthdr)
|
||||||
{
|
{
|
||||||
struct sock *raw_sk;
|
return ipv6_raw_deliver(skb, nexthdr);
|
||||||
|
|
||||||
raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (RAW_HTABLE_SIZE - 1)]);
|
|
||||||
if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
|
|
||||||
raw_sk = NULL;
|
|
||||||
|
|
||||||
return raw_sk != NULL;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/* This cleans up af_inet6 a bit. -DaveM */
|
/* This cleans up af_inet6 a bit. -DaveM */
|
||||||
@ -361,28 +335,25 @@ static void rawv6_err(struct sock *sk, struct sk_buff *skb,
|
|||||||
void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
|
void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
|
||||||
u8 type, u8 code, int inner_offset, __be32 info)
|
u8 type, u8 code, int inner_offset, __be32 info)
|
||||||
{
|
{
|
||||||
|
const struct in6_addr *saddr, *daddr;
|
||||||
|
struct net *net = dev_net(skb->dev);
|
||||||
|
struct hlist_head *head;
|
||||||
struct sock *sk;
|
struct sock *sk;
|
||||||
int hash;
|
int hash;
|
||||||
const struct in6_addr *saddr, *daddr;
|
|
||||||
struct net *net;
|
|
||||||
|
|
||||||
hash = nexthdr & (RAW_HTABLE_SIZE - 1);
|
hash = nexthdr & (RAW_HTABLE_SIZE - 1);
|
||||||
|
head = &raw_v6_hashinfo.ht[hash];
|
||||||
read_lock(&raw_v6_hashinfo.lock);
|
read_lock(&raw_v6_hashinfo.lock);
|
||||||
sk = sk_head(&raw_v6_hashinfo.ht[hash]);
|
sk_for_each(sk, head) {
|
||||||
if (sk) {
|
|
||||||
/* Note: ipv6_hdr(skb) != skb->data */
|
/* Note: ipv6_hdr(skb) != skb->data */
|
||||||
const struct ipv6hdr *ip6h = (const struct ipv6hdr *)skb->data;
|
const struct ipv6hdr *ip6h = (const struct ipv6hdr *)skb->data;
|
||||||
saddr = &ip6h->saddr;
|
saddr = &ip6h->saddr;
|
||||||
daddr = &ip6h->daddr;
|
daddr = &ip6h->daddr;
|
||||||
net = dev_net(skb->dev);
|
|
||||||
|
|
||||||
while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
|
if (!raw_v6_match(net, sk, nexthdr, &ip6h->saddr, &ip6h->daddr,
|
||||||
inet6_iif(skb), inet6_iif(skb)))) {
|
inet6_iif(skb), inet6_iif(skb)))
|
||||||
rawv6_err(sk, skb, NULL, type, code,
|
continue;
|
||||||
inner_offset, info);
|
rawv6_err(sk, skb, NULL, type, code, inner_offset, info);
|
||||||
sk = sk_next(sk);
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
read_unlock(&raw_v6_hashinfo.lock);
|
read_unlock(&raw_v6_hashinfo.lock);
|
||||||
}
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user