1 // SPDX-License-Identifier: GPL-2.0
29 	if (skb->protocol != bpf_htons(ETH_P_IPV6))  in needed_tcp_pkt()
40 	if (tcph->source != bpf_htons(g_sock_port) &&  in needed_tcp_pkt()
41 	    tcph->dest != bpf_htons(g_sock_port))  in needed_tcp_pkt()
51 		if (tcph->fin || !tcph->syn || !tcph->ack)  in egress_accept()
65 		if (!tcph->syn || tcph->fin || tcph->ack)  in ingress_accept()
71 		if (tcph->fin || tcph->syn || !tcph->ack)  in ingress_accept()
87 		if (!tcph->syn || tcph->fin || tcph->ack)  in egress_connect()
100 		if (tcph->fin || !tcph->syn || !tcph->ack)  in ingress_connect()
117 		if (tcph->fin || tcph->syn || !tcph->ack)  in egress_close_remote()
123 		if (!tcph->fin)  in egress_close_remote()
139 		if (tcph->fin)  in ingress_close_remote()
143 		if (tcph->fin || tcph->syn || !tcph->ack)  in ingress_close_remote()
160 		if (tcph->fin)  in egress_close_local()
164 		if (tcph->fin || tcph->syn || !tcph->ack)  in egress_close_local()
182 		if (tcph->fin || tcph->syn || !tcph->ack)  in ingress_close_local()
188 		if (!tcph->fin || tcph->syn || !tcph->ack)  in ingress_close_local()
200 /* Check the types of outgoing packets of a server socket to make sure they
201  * are consistent with the state of the server socket.
203  * The connection is closed by the client side.
215 	/* Egress of the server socket. */  in server_egress()
223 /* Check the types of incoming packets of a server socket to make sure they
224  * are consistent with the state of the server socket.
226  * The connection is closed by the client side.
238 	/* Ingress of the server socket. */  in server_ingress()
246 /* Check the types of outgoing packets of a server socket to make sure they
247  * are consistent with the state of the server socket.
249  * The connection is closed by the server side.
261 	/* Egress of the server socket. */  in server_egress_srv()
269 /* Check the types of incoming packets of a server socket to make sure they
270  * are consistent with the state of the server socket.
272  * The connection is closed by the server side.
284 	/* Ingress of the server socket. */  in server_ingress_srv()
295  * The connection is closed by the server side.
307 	/* Egress of the server socket. */  in client_egress_srv()
318  * The connection is closed by the server side.
330 	/* Ingress of the server socket. */  in client_ingress_srv()
341  * The connection is closed by the client side.
353 	/* Egress of the server socket. */  in client_egress()
364  * The connection is closed by the client side.
376 	/* Ingress of the server socket. */  in client_ingress()