63  *                      Outer Hdr at                 Inner Hdr at
71  *    ECN field in the outer header to ECT(0).
72  *    otherwise, copy the ECN field to the outer header.
74  *    (E) if the ECN field in the outer header is set to CE and the ECN
77  *    and the ECN field in the outer header is set to CE, then copy CE to
81  *    (I) set the ECN field to not-ECT in the outer header.
83  *    (E) if the ECN field in the outer header is set to CE, drop the packet.
91  * modify outer ECN (TOS) field on ingress operation (tunnel encapsulation).
94 ip_ecn_ingress(int mode, uint8_t *outer, const uint8_t *inner)  in ip_ecn_ingress()  argument
97 	if (!outer || !inner)  in ip_ecn_ingress()
100 	*outer = *inner;  in ip_ecn_ingress()
105 		 * to the outer.  otherwise, copy the ECN field.  in ip_ecn_ingress()
108 			*outer &= ~IPTOS_ECN_ECT1;  in ip_ecn_ingress()
112 		 * limited-functionality: set not-ECT to the outer  in ip_ecn_ingress()
114 		*outer &= ~IPTOS_ECN_MASK;  in ip_ecn_ingress()
126 ip_ecn_egress(int mode, const uint8_t *outer, uint8_t *inner)  in ip_ecn_egress()  argument
129 	if (!outer || !inner)  in ip_ecn_egress()
135 		 * full-functionality: if the outer is CE and the inner is  in ip_ecn_egress()
138 		if ((*outer & IPTOS_ECN_MASK) == IPTOS_ECN_CE) {  in ip_ecn_egress()
146 		 * limited-functionality: if the outer is CE, should drop it.  in ip_ecn_egress()
149 		if ((*outer & IPTOS_ECN_MASK) == IPTOS_ECN_CE)  in ip_ecn_egress()
160 ip6_ecn_ingress(int mode, uint32_t *outer, const uint32_t *inner)  in ip6_ecn_ingress()  argument
164 	if (!outer || !inner)  in ip6_ecn_ingress()
169 	*outer &= ~htonl(0xff << 20);  in ip6_ecn_ingress()
170 	*outer |= htonl((uint32_t)outer8 << 20);  in ip6_ecn_ingress()
174 ip6_ecn_egress(int mode, const uint32_t *outer, uint32_t *inner)  in ip6_ecn_egress()  argument
178 	if (!outer || !inner)  in ip6_ecn_egress()
181 	outer8 = (ntohl(*outer) >> 20) & 0xff;  in ip6_ecn_egress()