Commit 6dc4c252 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

tcp: use EXPORT_IPV6_MOD[_GPL]() 



Use EXPORT_IPV6_MOD[_GPL]() for symbols that don't need
to be exported unless CONFIG_IPV6=m

tcp_hashinfo and tcp_openreq_init_rwin() are no longer
used from any module anyway.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: default avatarMateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/20250212132418.1524422-4-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 95a3c96c

net/core/secure_seq.c

+1 −1
Original line number Diff line number Diff line
@@ -71,7 +71,7 @@ u32 secure_tcpv6_ts_off(const struct net *net, 
	return siphash(&combined, offsetofend(typeof(combined), daddr),

		       &ts_secret);

}

EXPORT_SYMBOL(secure_tcpv6_ts_off);

EXPORT_IPV6_MOD(secure_tcpv6_ts_off);



u32 secure_tcpv6_seq(const __be32 *saddr, const __be32 *daddr,

		     __be16 sport, __be16 dport)

net/ipv4/syncookies.c

+4 −4
Original line number Diff line number Diff line
@@ -222,7 +222,7 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb, 


	return NULL;

}

EXPORT_SYMBOL(tcp_get_cookie_sock);

EXPORT_IPV6_MOD(tcp_get_cookie_sock);



/*

 * when syncookies are in effect and tcp timestamps are enabled we stored
@@ -259,7 +259,7 @@ bool cookie_timestamp_decode(const struct net *net, 


	return READ_ONCE(net->ipv4.sysctl_tcp_window_scaling) != 0;

}

EXPORT_SYMBOL(cookie_timestamp_decode);

EXPORT_IPV6_MOD(cookie_timestamp_decode);



static int cookie_tcp_reqsk_init(struct sock *sk, struct sk_buff *skb,

				 struct request_sock *req)
@@ -310,7 +310,7 @@ struct request_sock *cookie_bpf_check(struct sock *sk, struct sk_buff *skb) 


	return req;

}

EXPORT_SYMBOL_GPL(cookie_bpf_check);

EXPORT_IPV6_MOD_GPL(cookie_bpf_check);

#endif



struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops,
@@ -351,7 +351,7 @@ struct request_sock *cookie_tcp_reqsk_alloc(const struct request_sock_ops *ops, 


	return req;

}

EXPORT_SYMBOL_GPL(cookie_tcp_reqsk_alloc);

EXPORT_IPV6_MOD_GPL(cookie_tcp_reqsk_alloc);



static struct request_sock *cookie_tcp_check(struct net *net, struct sock *sk,

					     struct sk_buff *skb)

net/ipv4/tcp.c

+22 −22
Original line number Diff line number Diff line
@@ -300,10 +300,10 @@ DEFINE_PER_CPU(u32, tcp_tw_isn); 
EXPORT_PER_CPU_SYMBOL_GPL(tcp_tw_isn);



long sysctl_tcp_mem[3] __read_mostly;

EXPORT_SYMBOL(sysctl_tcp_mem);

EXPORT_IPV6_MOD(sysctl_tcp_mem);



atomic_long_t tcp_memory_allocated ____cacheline_aligned_in_smp;	/* Current allocated memory. */

EXPORT_SYMBOL(tcp_memory_allocated);

EXPORT_IPV6_MOD(tcp_memory_allocated);

DEFINE_PER_CPU(int, tcp_memory_per_cpu_fw_alloc);

EXPORT_PER_CPU_SYMBOL_GPL(tcp_memory_per_cpu_fw_alloc);
@@ -316,7 +316,7 @@ EXPORT_SYMBOL(tcp_have_smc); 
 * Current number of TCP sockets.

 */

struct percpu_counter tcp_sockets_allocated ____cacheline_aligned_in_smp;

EXPORT_SYMBOL(tcp_sockets_allocated);

EXPORT_IPV6_MOD(tcp_sockets_allocated);



/*

 * TCP splice context
@@ -349,7 +349,7 @@ void tcp_enter_memory_pressure(struct sock *sk) 
	if (!cmpxchg(&tcp_memory_pressure, 0, val))

		NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPMEMORYPRESSURES);

}

EXPORT_SYMBOL_GPL(tcp_enter_memory_pressure);

EXPORT_IPV6_MOD_GPL(tcp_enter_memory_pressure);



void tcp_leave_memory_pressure(struct sock *sk)

{
@@ -362,7 +362,7 @@ void tcp_leave_memory_pressure(struct sock *sk) 
		NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPMEMORYPRESSURESCHRONO,

			      jiffies_to_msecs(jiffies - val));

}

EXPORT_SYMBOL_GPL(tcp_leave_memory_pressure);

EXPORT_IPV6_MOD_GPL(tcp_leave_memory_pressure);



/* Convert seconds to retransmits based on initial and max timeout */

static u8 secs_to_retrans(int seconds, int timeout, int rto_max)
@@ -479,7 +479,7 @@ void tcp_init_sock(struct sock *sk) 
	sk_sockets_allocated_inc(sk);

	xa_init_flags(&sk->sk_user_frags, XA_FLAGS_ALLOC1);

}

EXPORT_SYMBOL(tcp_init_sock);

EXPORT_IPV6_MOD(tcp_init_sock);



static void tcp_tx_timestamp(struct sock *sk, struct sockcm_cookie *sockc)

{
@@ -664,7 +664,7 @@ int tcp_ioctl(struct sock *sk, int cmd, int *karg) 
	*karg = answ;

	return 0;

}

EXPORT_SYMBOL(tcp_ioctl);

EXPORT_IPV6_MOD(tcp_ioctl);



void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb)

{
@@ -880,7 +880,7 @@ ssize_t tcp_splice_read(struct socket *sock, loff_t *ppos, 


	return ret;

}

EXPORT_SYMBOL(tcp_splice_read);

EXPORT_IPV6_MOD(tcp_splice_read);



struct sk_buff *tcp_stream_alloc_skb(struct sock *sk, gfp_t gfp,

				     bool force_schedule)
@@ -1380,7 +1380,7 @@ void tcp_splice_eof(struct socket *sock) 
	tcp_push(sk, 0, mss_now, tp->nonagle, size_goal);

	release_sock(sk);

}

EXPORT_SYMBOL_GPL(tcp_splice_eof);

EXPORT_IPV6_MOD_GPL(tcp_splice_eof);



/*

 *	Handle reading urgent data. BSD has very simple semantics for
@@ -1671,7 +1671,7 @@ int tcp_read_skb(struct sock *sk, skb_read_actor_t recv_actor) 
	}

	return copied;

}

EXPORT_SYMBOL(tcp_read_skb);

EXPORT_IPV6_MOD(tcp_read_skb);



void tcp_read_done(struct sock *sk, size_t len)

{
@@ -1716,7 +1716,7 @@ int tcp_peek_len(struct socket *sock) 
{

	return tcp_inq(sock->sk);

}

EXPORT_SYMBOL(tcp_peek_len);

EXPORT_IPV6_MOD(tcp_peek_len);



/* Make sure sk_rcvbuf is big enough to satisfy SO_RCVLOWAT hint */

int tcp_set_rcvlowat(struct sock *sk, int val)
@@ -1743,7 +1743,7 @@ int tcp_set_rcvlowat(struct sock *sk, int val) 
	}

	return 0;

}

EXPORT_SYMBOL(tcp_set_rcvlowat);

EXPORT_IPV6_MOD(tcp_set_rcvlowat);



void tcp_update_recv_tstamps(struct sk_buff *skb,

			     struct scm_timestamping_internal *tss)
@@ -1776,7 +1776,7 @@ int tcp_mmap(struct file *file, struct socket *sock, 
	vma->vm_ops = &tcp_vm_ops;

	return 0;

}

EXPORT_SYMBOL(tcp_mmap);

EXPORT_IPV6_MOD(tcp_mmap);



static skb_frag_t *skb_advance_to_frag(struct sk_buff *skb, u32 offset_skb,

				       u32 *offset_frag)
@@ -2873,7 +2873,7 @@ int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags, 
	}

	return ret;

}

EXPORT_SYMBOL(tcp_recvmsg);

EXPORT_IPV6_MOD(tcp_recvmsg);



void tcp_set_state(struct sock *sk, int state)

{
@@ -3003,7 +3003,7 @@ void tcp_shutdown(struct sock *sk, int how) 
			tcp_send_fin(sk);

	}

}

EXPORT_SYMBOL(tcp_shutdown);

EXPORT_IPV6_MOD(tcp_shutdown);



int tcp_orphan_count_sum(void)

{
@@ -3502,7 +3502,7 @@ static int tcp_repair_options_est(struct sock *sk, sockptr_t optbuf, 
}



DEFINE_STATIC_KEY_FALSE(tcp_tx_delay_enabled);

EXPORT_SYMBOL(tcp_tx_delay_enabled);

EXPORT_IPV6_MOD(tcp_tx_delay_enabled);



static void tcp_enable_tx_delay(void)

{
@@ -4045,7 +4045,7 @@ int tcp_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, 
								optval, optlen);

	return do_tcp_setsockopt(sk, level, optname, optval, optlen);

}

EXPORT_SYMBOL(tcp_setsockopt);

EXPORT_IPV6_MOD(tcp_setsockopt);



static void tcp_get_info_chrono_stats(const struct tcp_sock *tp,

				      struct tcp_info *info)
@@ -4676,7 +4676,7 @@ bool tcp_bpf_bypass_getsockopt(int level, int optname) 


	return false;

}

EXPORT_SYMBOL(tcp_bpf_bypass_getsockopt);

EXPORT_IPV6_MOD(tcp_bpf_bypass_getsockopt);



int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,

		   int __user *optlen)
@@ -4690,11 +4690,11 @@ int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, 
	return do_tcp_getsockopt(sk, level, optname, USER_SOCKPTR(optval),

				 USER_SOCKPTR(optlen));

}

EXPORT_SYMBOL(tcp_getsockopt);

EXPORT_IPV6_MOD(tcp_getsockopt);



#ifdef CONFIG_TCP_MD5SIG

int tcp_md5_sigpool_id = -1;

EXPORT_SYMBOL_GPL(tcp_md5_sigpool_id);

EXPORT_IPV6_MOD_GPL(tcp_md5_sigpool_id);



int tcp_md5_alloc_sigpool(void)

{
@@ -4740,7 +4740,7 @@ int tcp_md5_hash_key(struct tcp_sigpool *hp, 
	 */

	return data_race(crypto_ahash_update(hp->req));

}

EXPORT_SYMBOL(tcp_md5_hash_key);

EXPORT_IPV6_MOD(tcp_md5_hash_key);



/* Called with rcu_read_lock() */

static enum skb_drop_reason
@@ -4860,7 +4860,7 @@ tcp_inbound_hash(struct sock *sk, const struct request_sock *req, 
	return tcp_inbound_md5_hash(sk, skb, saddr, daddr, family,

				    l3index, md5_location);

}

EXPORT_SYMBOL_GPL(tcp_inbound_hash);

EXPORT_IPV6_MOD_GPL(tcp_inbound_hash);



void tcp_done(struct sock *sk)

{

net/ipv4/tcp_fastopen.c

+1 −1
Original line number Diff line number Diff line
@@ -468,7 +468,7 @@ bool tcp_fastopen_defer_connect(struct sock *sk, int *err) 
	}

	return false;

}

EXPORT_SYMBOL(tcp_fastopen_defer_connect);

EXPORT_IPV6_MOD(tcp_fastopen_defer_connect);



/*

 * The following code block is to deal with middle box issues with TFO:

net/ipv4/tcp_input.c

+7 −7
Original line number Diff line number Diff line
@@ -630,7 +630,7 @@ void tcp_initialize_rcv_mss(struct sock *sk) 


	inet_csk(sk)->icsk_ack.rcv_mss = hint;

}

EXPORT_SYMBOL(tcp_initialize_rcv_mss);

EXPORT_IPV6_MOD(tcp_initialize_rcv_mss);



/* Receiver "autotuning" code.

 *
@@ -2891,7 +2891,7 @@ void tcp_simple_retransmit(struct sock *sk) 
	 */

	tcp_non_congestion_loss_retransmit(sk);

}

EXPORT_SYMBOL(tcp_simple_retransmit);

EXPORT_IPV6_MOD(tcp_simple_retransmit);



void tcp_enter_recovery(struct sock *sk, bool ece_ack)

{
@@ -4521,7 +4521,7 @@ void tcp_done_with_error(struct sock *sk, int err) 
	if (!sock_flag(sk, SOCK_DEAD))

		sk_error_report(sk);

}

EXPORT_SYMBOL(tcp_done_with_error);

EXPORT_IPV6_MOD(tcp_done_with_error);



/* When we get a reset we do this. */

void tcp_reset(struct sock *sk, struct sk_buff *skb)
@@ -6291,7 +6291,7 @@ void tcp_rcv_established(struct sock *sk, struct sk_buff *skb) 
discard:

	tcp_drop_reason(sk, skb, reason);

}

EXPORT_SYMBOL(tcp_rcv_established);

EXPORT_IPV6_MOD(tcp_rcv_established);



void tcp_init_transfer(struct sock *sk, int bpf_op, struct sk_buff *skb)

{
@@ -7004,7 +7004,7 @@ tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb) 
	__kfree_skb(skb);

	return 0;

}

EXPORT_SYMBOL(tcp_rcv_state_process);

EXPORT_IPV6_MOD(tcp_rcv_state_process);



static inline void pr_drop_req(struct request_sock *req, __u16 port, int family)

{
@@ -7186,7 +7186,7 @@ u16 tcp_get_syncookie_mss(struct request_sock_ops *rsk_ops, 


	return mss;

}

EXPORT_SYMBOL_GPL(tcp_get_syncookie_mss);

EXPORT_IPV6_MOD_GPL(tcp_get_syncookie_mss);



int tcp_conn_request(struct request_sock_ops *rsk_ops,

		     const struct tcp_request_sock_ops *af_ops,
@@ -7367,4 +7367,4 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops, 
	tcp_listendrop(sk);

	return 0;

}

EXPORT_SYMBOL(tcp_conn_request);
 
EXPORT_IPV6_MOD(tcp_conn_request);