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Commit fb99c848 authored by Al Viro's avatar Al Viro Committed by David S. Miller
Browse files

[IPV4]: annotate inet_lookup() and friends 



inet_lookup() annotated along with helper functions (__inet_lookup(),
__inet_lookup_established(), inet_lookup_established(),
inet_lookup_listener(), __inet_lookup_listener() and inet_ehashfn())

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f765d84

include/net/inet_hashtables.h

+10 −10
Original line number Diff line number Diff line
@@ -272,12 +272,12 @@ static inline int inet_iif(const struct sk_buff *skb) 
}



extern struct sock *__inet_lookup_listener(struct inet_hashinfo *hashinfo,

					   const u32 daddr,

					   const __be32 daddr,

					   const unsigned short hnum,

					   const int dif);



static inline struct sock *inet_lookup_listener(struct inet_hashinfo *hashinfo,

						u32 daddr, u16 dport, int dif)

						__be32 daddr, __be16 dport, int dif)

{

	return __inet_lookup_listener(hashinfo, daddr, ntohs(dport), dif);

}
@@ -347,8 +347,8 @@ typedef __u64 __bitwise __addrpair; 
 */

static inline struct sock *

	__inet_lookup_established(struct inet_hashinfo *hashinfo,

				  const u32 saddr, const u16 sport,

				  const u32 daddr, const u16 hnum,

				  const __be32 saddr, const __be16 sport,

				  const __be32 daddr, const u16 hnum,

				  const int dif)

{

	INET_ADDR_COOKIE(acookie, saddr, daddr)
@@ -384,8 +384,8 @@ hit: 


static inline struct sock *

	inet_lookup_established(struct inet_hashinfo *hashinfo,

				const u32 saddr, const u16 sport,

				const u32 daddr, const u16 dport,

				const __be32 saddr, const __be16 sport,

				const __be32 daddr, const __be16 dport,

				const int dif)

{

	return __inet_lookup_established(hashinfo, saddr, sport, daddr,
@@ -393,8 +393,8 @@ static inline struct sock * 
}



static inline struct sock *__inet_lookup(struct inet_hashinfo *hashinfo,

					 const u32 saddr, const u16 sport,

					 const u32 daddr, const u16 dport,

					 const __be32 saddr, const __be16 sport,

					 const __be32 daddr, const __be16 dport,

					 const int dif)

{

	u16 hnum = ntohs(dport);
@@ -404,8 +404,8 @@ static inline struct sock *__inet_lookup(struct inet_hashinfo *hashinfo, 
}



static inline struct sock *inet_lookup(struct inet_hashinfo *hashinfo,

				       const u32 saddr, const u16 sport,

				       const u32 daddr, const u16 dport,

				       const __be32 saddr, const __be16 sport,

				       const __be32 daddr, const __be16 dport,

				       const int dif)

{

	struct sock *sk;

include/net/inet_sock.h

+6 −6
Original line number Diff line number Diff line
@@ -167,10 +167,10 @@ static inline void inet_sk_copy_descendant(struct sock *sk_to, 


extern int inet_sk_rebuild_header(struct sock *sk);



static inline unsigned int inet_ehashfn(const __u32 laddr, const __u16 lport,

					const __u32 faddr, const __u16 fport)

static inline unsigned int inet_ehashfn(const __be32 laddr, const __u16 lport,

					const __be32 faddr, const __be16 fport)

{

	unsigned int h = (laddr ^ lport) ^ (faddr ^ fport);

	unsigned int h = ((__force __u32)laddr ^ lport) ^ ((__force __u32)faddr ^ (__force __u32)fport);

	h ^= h >> 16;

	h ^= h >> 8;

	return h;
@@ -179,10 +179,10 @@ static inline unsigned int inet_ehashfn(const __u32 laddr, const __u16 lport, 
static inline int inet_sk_ehashfn(const struct sock *sk)

{

	const struct inet_sock *inet = inet_sk(sk);

	const __u32 laddr = inet->rcv_saddr;

	const __be32 laddr = inet->rcv_saddr;

	const __u16 lport = inet->num;

	const __u32 faddr = inet->daddr;

	const __u16 fport = inet->dport;

	const __be32 faddr = inet->daddr;

	const __be16 fport = inet->dport;



	return inet_ehashfn(laddr, lport, faddr, fport);

}

net/ipv4/inet_hashtables.c

+5 −5
Original line number Diff line number Diff line
@@ -125,7 +125,7 @@ EXPORT_SYMBOL(inet_listen_wlock); 
 * wildcarded during the search since they can never be otherwise.

 */

static struct sock *inet_lookup_listener_slow(const struct hlist_head *head,

					      const u32 daddr,

					      const __be32 daddr,

					      const unsigned short hnum,

					      const int dif)

{
@@ -137,7 +137,7 @@ static struct sock *inet_lookup_listener_slow(const struct hlist_head *head, 
		const struct inet_sock *inet = inet_sk(sk);



		if (inet->num == hnum && !ipv6_only_sock(sk)) {

			const __u32 rcv_saddr = inet->rcv_saddr;

			const __be32 rcv_saddr = inet->rcv_saddr;

			int score = sk->sk_family == PF_INET ? 1 : 0;



			if (rcv_saddr) {
@@ -163,7 +163,7 @@ static struct sock *inet_lookup_listener_slow(const struct hlist_head *head, 


/* Optimize the common listener case. */

struct sock *__inet_lookup_listener(struct inet_hashinfo *hashinfo,

				    const u32 daddr, const unsigned short hnum,

				    const __be32 daddr, const unsigned short hnum,

				    const int dif)

{

	struct sock *sk = NULL;
@@ -197,8 +197,8 @@ static int __inet_check_established(struct inet_timewait_death_row *death_row, 
{

	struct inet_hashinfo *hinfo = death_row->hashinfo;

	struct inet_sock *inet = inet_sk(sk);

	u32 daddr = inet->rcv_saddr;

	u32 saddr = inet->daddr;

	__be32 daddr = inet->rcv_saddr;

	__be32 saddr = inet->daddr;

	int dif = sk->sk_bound_dev_if;

	INET_ADDR_COOKIE(acookie, saddr, daddr)

	const __portpair ports = INET_COMBINED_PORTS(inet->dport, lport);