1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved.
6  * Copyright (c) 2016-2017, Dave Watson <davejwatson@fb.com>. All rights reserved.
27 		if (strcmp(e->name, name) == 0)  in tcp_ulp_find()
36 	const struct tcp_ulp_ops *ulp = NULL;  in __tcp_ulp_find_autoload()  local
39 	ulp = tcp_ulp_find(name);  in __tcp_ulp_find_autoload()
42 	if (!ulp && capable(CAP_NET_ADMIN)) {  in __tcp_ulp_find_autoload()
44 		request_module("tcp-ulp-%s", name);  in __tcp_ulp_find_autoload()
46 		ulp = tcp_ulp_find(name);  in __tcp_ulp_find_autoload()
49 	if (!ulp || !try_module_get(ulp->owner))  in __tcp_ulp_find_autoload()
50 		ulp = NULL;  in __tcp_ulp_find_autoload()
53 	return ulp;  in __tcp_ulp_find_autoload()
59 int tcp_register_ulp(struct tcp_ulp_ops *ulp)  in tcp_register_ulp()  argument
61 	int ret = 0;  in tcp_register_ulp()
64 	if (tcp_ulp_find(ulp->name))  in tcp_register_ulp()
65 		ret = -EEXIST;  in tcp_register_ulp()
67 		list_add_tail_rcu(&ulp->list, &tcp_ulp_list);  in tcp_register_ulp()
74 void tcp_unregister_ulp(struct tcp_ulp_ops *ulp)  in tcp_unregister_ulp()  argument
77 	list_del_rcu(&ulp->list);  in tcp_unregister_ulp()
88 	size_t offs = 0;  in tcp_get_available_ulp()
90 	*buf = '\0';  in tcp_get_available_ulp()
93 		offs += snprintf(buf + offs, maxlen - offs,  in tcp_get_available_ulp()
95 				 offs == 0 ? "" : " ", ulp_ops->name);  in tcp_get_available_ulp()
108 	if (icsk->icsk_ulp_ops->update)  in tcp_update_ulp()
109 		icsk->icsk_ulp_ops->update(sk, proto, write_space);  in tcp_update_ulp()
120 	if (!icsk->icsk_ulp_ops)  in tcp_cleanup_ulp()
123 	if (icsk->icsk_ulp_ops->release)  in tcp_cleanup_ulp()
124 		icsk->icsk_ulp_ops->release(sk);  in tcp_cleanup_ulp()
125 	module_put(icsk->icsk_ulp_ops->owner);  in tcp_cleanup_ulp()
127 	icsk->icsk_ulp_ops = NULL;  in tcp_cleanup_ulp()
135 	err = -EEXIST;  in __tcp_set_ulp()
136 	if (icsk->icsk_ulp_ops)  in __tcp_set_ulp()
139 	if (sk->sk_socket)  in __tcp_set_ulp()
140 		clear_bit(SOCK_SUPPORT_ZC, &sk->sk_socket->flags);  in __tcp_set_ulp()
142 	err = -ENOTCONN;  in __tcp_set_ulp()
143 	if (!ulp_ops->clone && sk->sk_state == TCP_LISTEN)  in __tcp_set_ulp()
146 	err = ulp_ops->init(sk);  in __tcp_set_ulp()
150 	icsk->icsk_ulp_ops = ulp_ops;  in __tcp_set_ulp()
151 	return 0;  in __tcp_set_ulp()
153 	module_put(ulp_ops->owner);  in __tcp_set_ulp()
165 		return -ENOENT;  in tcp_set_ulp()