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Commit fd3a154a authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

tcp: md5: get rid of tcp_v[46]_reqsk_md5_lookup() 



With request socks convergence, we no longer need
different lookup methods. A request socket can
use generic lookup function.

Add const qualifier to 2nd tcp_v[46]_md5_lookup() parameter.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 39f8e58e

include/net/tcp.h

+4 −4
Original line number Diff line number Diff line
@@ -1303,7 +1303,7 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr, 
int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr,

		   int family);

struct tcp_md5sig_key *tcp_v4_md5_lookup(struct sock *sk,

					 struct sock *addr_sk);

					 const struct sock *addr_sk);



#ifdef CONFIG_TCP_MD5SIG

struct tcp_md5sig_key *tcp_md5_do_lookup(struct sock *sk,
@@ -1614,7 +1614,7 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops, 
struct tcp_sock_af_ops {

#ifdef CONFIG_TCP_MD5SIG

	struct tcp_md5sig_key	*(*md5_lookup) (struct sock *sk,

						struct sock *addr_sk);

						const struct sock *addr_sk);

	int		(*calc_md5_hash)(char *location,

					 const struct tcp_md5sig_key *md5,

					 const struct sock *sk,
@@ -1628,8 +1628,8 @@ struct tcp_sock_af_ops { 
struct tcp_request_sock_ops {

	u16 mss_clamp;

#ifdef CONFIG_TCP_MD5SIG

	struct tcp_md5sig_key	*(*md5_lookup) (struct sock *sk,

						struct request_sock *req);

	struct tcp_md5sig_key *(*req_md5_lookup)(struct sock *sk,

						 const struct sock *addr_sk);

	int		(*calc_md5_hash) (char *location,

					  const struct tcp_md5sig_key *md5,

					  const struct sock *sk,

net/ipv4/tcp_ipv4.c

+5 −14
Original line number Diff line number Diff line
@@ -898,10 +898,10 @@ struct tcp_md5sig_key *tcp_md5_do_lookup(struct sock *sk, 
					 const union tcp_md5_addr *addr,

					 int family)

{

	struct tcp_sock *tp = tcp_sk(sk);

	const struct tcp_sock *tp = tcp_sk(sk);

	struct tcp_md5sig_key *key;

	unsigned int size = sizeof(struct in_addr);

	struct tcp_md5sig_info *md5sig;

	const struct tcp_md5sig_info *md5sig;



	/* caller either holds rcu_read_lock() or socket lock */

	md5sig = rcu_dereference_check(tp->md5sig_info,
@@ -924,24 +924,15 @@ struct tcp_md5sig_key *tcp_md5_do_lookup(struct sock *sk, 
EXPORT_SYMBOL(tcp_md5_do_lookup);



struct tcp_md5sig_key *tcp_v4_md5_lookup(struct sock *sk,

					 struct sock *addr_sk)

					 const struct sock *addr_sk)

{

	union tcp_md5_addr *addr;



	addr = (union tcp_md5_addr *)&inet_sk(addr_sk)->inet_daddr;

	addr = (union tcp_md5_addr *)&sk->sk_daddr;

	return tcp_md5_do_lookup(sk, addr, AF_INET);

}

EXPORT_SYMBOL(tcp_v4_md5_lookup);



static struct tcp_md5sig_key *tcp_v4_reqsk_md5_lookup(struct sock *sk,

						      struct request_sock *req)

{

	union tcp_md5_addr *addr;



	addr = (union tcp_md5_addr *)&inet_rsk(req)->ir_rmt_addr;

	return tcp_md5_do_lookup(sk, addr, AF_INET);

}



/* This can be called on a newly created socket, from other files */

int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,

		   int family, const u8 *newkey, u8 newkeylen, gfp_t gfp)
@@ -1247,7 +1238,7 @@ struct request_sock_ops tcp_request_sock_ops __read_mostly = { 
static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {

	.mss_clamp	=	TCP_MSS_DEFAULT,

#ifdef CONFIG_TCP_MD5SIG

	.md5_lookup	=	tcp_v4_reqsk_md5_lookup,

	.req_md5_lookup	=	tcp_v4_md5_lookup,

	.calc_md5_hash	=	tcp_v4_md5_hash_skb,

#endif

	.init_req	=	tcp_v4_init_req,

net/ipv4/tcp_output.c

+1 −1
Original line number Diff line number Diff line
@@ -2938,7 +2938,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst, 


#ifdef CONFIG_TCP_MD5SIG

	rcu_read_lock();

	md5 = tcp_rsk(req)->af_specific->md5_lookup(sk, req);

	md5 = tcp_rsk(req)->af_specific->req_md5_lookup(sk, req_to_sk(req));

#endif

	tcp_header_size = tcp_synack_options(sk, req, mss, skb, &opts, md5,

					     foc) + sizeof(*th);

net/ipv6/tcp_ipv6.c

+2 −8
Original line number Diff line number Diff line
@@ -486,17 +486,11 @@ static struct tcp_md5sig_key *tcp_v6_md5_do_lookup(struct sock *sk, 
}



static struct tcp_md5sig_key *tcp_v6_md5_lookup(struct sock *sk,

						struct sock *addr_sk)

						const struct sock *addr_sk)

{

	return tcp_v6_md5_do_lookup(sk, &addr_sk->sk_v6_daddr);

}



static struct tcp_md5sig_key *tcp_v6_reqsk_md5_lookup(struct sock *sk,

						      struct request_sock *req)

{

	return tcp_v6_md5_do_lookup(sk, &inet_rsk(req)->ir_v6_rmt_addr);

}



static int tcp_v6_parse_md5_keys(struct sock *sk, char __user *optval,

				 int optlen)

{
@@ -720,7 +714,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = { 
	.mss_clamp	=	IPV6_MIN_MTU - sizeof(struct tcphdr) -

				sizeof(struct ipv6hdr),

#ifdef CONFIG_TCP_MD5SIG

	.md5_lookup	=	tcp_v6_reqsk_md5_lookup,

	.req_md5_lookup	=	tcp_v6_md5_lookup,

	.calc_md5_hash	=	tcp_v6_md5_hash_skb,

#endif

	.init_req	=	tcp_v6_init_req,