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48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
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* Operating Channel Validation (OCV)
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* Copyright (c) 2018, Mathy Vanhoef
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef OCV_H
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#define OCV_H
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struct wpa_channel_info;
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struct oci_info {
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/* Values in the OCI element */
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u8 op_class;
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u8 channel;
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u8 seg1_idx;
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/* Derived values for easier verification */
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int freq;
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int sec_channel;
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int chanwidth;
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};
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#define OCV_OCI_LEN 3
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#define OCV_OCI_EXTENDED_LEN (3 + OCV_OCI_LEN)
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#define OCV_OCI_KDE_LEN (2 + RSN_SELECTOR_LEN + OCV_OCI_LEN)
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enum oci_verify_result {
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OCI_SUCCESS, OCI_NOT_FOUND, OCI_INVALID_LENGTH, OCI_PARSE_ERROR,
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OCI_PRIMARY_FREQ_MISMATCH, OCI_CHANNEL_WIDTH_MISMATCH,
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OCI_SECONDARY_FREQ_MISMATCH, OCI_SEG_1_INDEX_MISMATCH
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};
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extern char ocv_errorstr[256];
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int ocv_derive_all_parameters(struct oci_info *oci);
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int ocv_insert_oci(struct wpa_channel_info *ci, u8 **argpos);
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int ocv_insert_oci_kde(struct wpa_channel_info *ci, u8 **argpos);
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int ocv_insert_extended_oci(struct wpa_channel_info *ci, u8 *pos);
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enum oci_verify_result
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ocv_verify_tx_params(const u8 *oci_ie, size_t oci_ie_len,
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struct wpa_channel_info *ci, int tx_chanwidth,
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int tx_seg1_idx);
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#endif /* OCV_H */
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