989  * @brief Calculate the AAD required for this frame for AES-GCM/AES-CCM.
991  * The contents are described in 802.11-2020 12.5.3.3.3 (Construct AAD)
993  * (Construct AAD) (AES-GCM).
1011  * @param wh	802.11 frame to calculate the AAD over
1012  * @param aad	AAD (additional authentication data) buffer
1013  * @param len	The AAD buffer length in bytes.
1014  * @returns	The number of AAD payload bytes (ignoring the first two
1015  * 		bytes, which are the AAD payload length in big-endian).
1018 ieee80211_crypto_init_aad(const struct ieee80211_frame *wh, uint8_t *aad,  in ieee80211_crypto_init_aad()  argument
1023 	memset(aad, 0, len);  in ieee80211_crypto_init_aad()
1026 	 * AAD for PV0 MPDUs:  in ieee80211_crypto_init_aad()
1034 	aad[0] = 0;	/* AAD length >> 8 */  in ieee80211_crypto_init_aad()
1035 	/* NB: aad[1] set below */  in ieee80211_crypto_init_aad()
1036 	aad[2] = wh->i_fc[0] & 0x8f;	/* see above for bitfields */  in ieee80211_crypto_init_aad()
1037 	aad[3] = wh->i_fc[1] & 0xc7;	/* see above for bitfields */  in ieee80211_crypto_init_aad()
1038 	/* mask aad[3] b7 if frame is data frame w/ QoS control field */  in ieee80211_crypto_init_aad()
1040 		aad[3] &= 0x7f;  in ieee80211_crypto_init_aad()
1043 	memcpy(aad + 4, wh->i_addr1, 3 * IEEE80211_ADDR_LEN);  in ieee80211_crypto_init_aad()
1044 	aad[22] = wh->i_seq[0] & IEEE80211_SEQ_FRAG_MASK;  in ieee80211_crypto_init_aad()
1045 	aad[23] = 0; /* all bits masked */  in ieee80211_crypto_init_aad()
1047 	 * Construct variable-length portion of AAD based  in ieee80211_crypto_init_aad()
1053 		IEEE80211_ADDR_COPY(aad + 24,  in ieee80211_crypto_init_aad()
1059 			aad[30] = qwh4->i_qos[0] & 0x0f;/* just priority bits */  in ieee80211_crypto_init_aad()
1060 			aad[31] = 0;  in ieee80211_crypto_init_aad()
1061 			aad_len = aad[1] = 22 + IEEE80211_ADDR_LEN + 2;  in ieee80211_crypto_init_aad()
1063 			*(uint16_t *)&aad[30] = 0;  in ieee80211_crypto_init_aad()
1064 			aad_len = aad[1] = 22 + IEEE80211_ADDR_LEN;  in ieee80211_crypto_init_aad()
1071 			aad[24] = qwh->i_qos[0] & 0x0f;	/* just priority bits */  in ieee80211_crypto_init_aad()
1072 			aad[25] = 0;  in ieee80211_crypto_init_aad()
1073 			aad_len = aad[1] = 22 + 2;  in ieee80211_crypto_init_aad()
1075 			*(uint16_t *)&aad[24] = 0;  in ieee80211_crypto_init_aad()
1076 			aad_len = aad[1] = 22;  in ieee80211_crypto_init_aad()
1078 		*(uint16_t *)&aad[26] = 0;  in ieee80211_crypto_init_aad()
1079 		*(uint32_t *)&aad[28] = 0;  in ieee80211_crypto_init_aad()