1 /* SPDX-License-Identifier: GPL-2.0-only */
15 /* Driver-facing API */
24 /* Kernel-facing API */
29 	return pas->drv_data;  in psp_assoc_drv_data()
41 	return rcu_dereference_check(sk->psp_assoc, lockdep_sock_is_held(sk));  in psp_sk_assoc()
50 	if (pas && pas->tx.spi)  in psp_enqueue_set_decrypted()
51 		skb->decrypted = 1;  in psp_enqueue_set_decrypted()
58 	struct psp_skb_ext *a, *b;  in __psp_skb_coalesce_diff()  local
61 	b = skb_ext_find(two, SKB_EXT_PSP);  in __psp_skb_coalesce_diff()
63 	diffs |= (!!a) ^ (!!b);  in __psp_skb_coalesce_diff()
65 		diffs |= memcmp(a, b, sizeof(*a));  in __psp_skb_coalesce_diff()
72 	bool fin = !!(TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN);  in psp_is_allowed_nondata()
73 	u32 end_seq = TCP_SKB_CB(skb)->end_seq;  in psp_is_allowed_nondata()
74 	u32 seq = TCP_SKB_CB(skb)->seq;  in psp_is_allowed_nondata()
77 	pure_fin = fin && end_seq - seq == 1;  in psp_is_allowed_nondata()
79 	return seq == end_seq || (pure_fin && seq == pas->upgrade_seq);  in psp_is_allowed_nondata()
85 	return pse && pas->rx.spi == pse->spi &&  in psp_pse_matches_pas()
86 	       pas->generation == pse->generation &&  in psp_pse_matches_pas()
87 	       pas->version == pse->version &&  in psp_pse_matches_pas()
88 	       pas->dev_id == pse->dev_id;  in psp_pse_matches_pas()
100 		if (unlikely(!pas->peer_tx))  in __psp_sk_rx_policy_check()
101 			pas->peer_tx = 1;  in __psp_sk_rx_policy_check()
107 		if (!pas->tx.spi ||  in __psp_sk_rx_policy_check()
108 		    (!pas->peer_tx && psp_is_allowed_nondata(skb, pas)))  in __psp_sk_rx_policy_check()
124 	return __psp_sk_rx_policy_check(skb, rcu_dereference(tw->psp_assoc));  in psp_twsk_rx_policy_check()
132 	state = READ_ONCE(sk->sk_state);  in psp_sk_get_assoc_rcu()
137 		      rcu_dereference(inet_twsk(sk)->psp_assoc) :  in psp_sk_get_assoc_rcu()
138 		      rcu_dereference(sk->psp_assoc);  in psp_sk_get_assoc_rcu()
144 	if (!skb->decrypted || !skb->sk)  in psp_skb_get_assoc_rcu()
147 	return psp_sk_get_assoc_rcu(skb->sk);  in psp_skb_get_assoc_rcu()
153 	bool has_psp = rcu_access_pointer(sk->psp_assoc);  in psp_sk_overhead()