f94ac12152
Add support for subelement defragmentation in the common handler for generating link specific (re)association request/response, as well as in the helper for parsing partner info from the Link Info field of the Basic variant Multi-Link element. CRs-Fixed: 3117210 Change-Id: I3727c9008043ac4132a8675bf15e73949fde63cd
281 lines
12 KiB
C
281 lines
12 KiB
C
/*
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* Copyright (c) 2021, The Linux Foundation. All rights reserved.
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* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* DOC: contains MLO manager containing util public api's
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*/
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#ifndef _WLAN_UTILS_MLO_H_
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#define _WLAN_UTILS_MLO_H_
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#include <wlan_cmn_ieee80211.h>
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#include "wlan_mlo_mgr_public_structs.h"
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#include <wlan_cm_ucfg_api.h>
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#include <wlan_objmgr_vdev_obj.h>
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#ifdef WLAN_FEATURE_11BE_MLO
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/**
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* util_gen_link_assoc_req() - Generate link specific assoc request
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* @frame: Pointer to original association request. This should not contain the
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* 802.11 header, and must start from the fixed fields in the association
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* request. This is required due to some caller semantics built into the end to
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* end design.
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* @frame_len: Length of original association request
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* @isreassoc: Whether this is a re-association request
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* @link_addr: Secondary link's MAC address
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* @link_frame: Generated secondary link specific association request. Note that
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* this will start from the 802.11 header (unlike the original association
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* request). This should be ignored in the case of failure.
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* @link_frame_maxsize: Maximum size of generated secondary link specific
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* association request
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* @link_frame_len: Pointer to location where populated length of generated
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* secondary link specific association request should be written. This should be
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* ignored in the case of failure.
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*
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* Generate a link specific logically equivalent association request for the
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* secondary link from the original association request containing a Multi-Link
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* element. This applies to both association and re-association requests.
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* Currently, only two link MLO is supported.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure.
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*/
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QDF_STATUS
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util_gen_link_assoc_req(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
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struct qdf_mac_addr link_addr,
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uint8_t *link_frame,
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qdf_size_t link_frame_maxsize,
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qdf_size_t *link_frame_len);
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/**
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* util_gen_link_assoc_rsp() - Generate link specific assoc response
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* @frame: Pointer to original association response. This should not contain the
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* 802.11 header, and must start from the fixed fields in the association
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* response. This is required due to some caller semantics built into the end to
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* end design.
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* @frame_len: Length of original association response
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* @isreassoc: Whether this is a re-association response
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* @link_addr: Secondary link's MAC address
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* @link_frame: Generated secondary link specific association response. Note
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* that this will start from the 802.11 header (unlike the original association
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* response). This should be ignored in the case of failure.
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* @link_frame_maxsize: Maximum size of generated secondary link specific
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* association response
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* @link_frame_len: Pointer to location where populated length of generated
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* secondary link specific association response should be written. This should
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* be ignored in the case of failure.
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*
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* Generate a link specific logically equivalent association response for the
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* secondary link from the original association response containing a Multi-Link
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* element. This applies to both association and re-association responses.
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* Currently, only two link MLO is supported.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure.
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*/
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QDF_STATUS
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util_gen_link_assoc_rsp(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
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struct qdf_mac_addr link_addr,
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uint8_t *link_frame,
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qdf_size_t link_frame_maxsize,
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qdf_size_t *link_frame_len);
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/**
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* util_find_mlie - Find the first Multi-Link element or the start of the first
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* Multi-Link element fragment sequence in a given buffer containing elements,
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* if a Multi-Link element or element fragment sequence exists in the given
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* buffer.
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*
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* @buf: Buffer to be searched for the Multi-Link element or the start of the
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* Multi-Link element fragment sequence
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* @buflen: Length of the buffer
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* @mlieseq: Pointer to location where the starting address of the Multi-Link
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* element or Multi-Link element fragment sequence should be updated if found
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* in the given buffer. The value NULL will be updated to this location if the
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* element or element fragment sequence is not found. This should be ignored by
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* the caller if the function returns error.
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* @mlieseqlen: Pointer to location where the total length of the Multi-Link
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* element or Multi-Link element fragment sequence should be updated if found
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* in the given buffer. This should be ignored by the caller if the function
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* returns error, or if the function indicates that the element or element
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* fragment sequence was not found by providing a starting address of NULL.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure
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*/
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QDF_STATUS
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util_find_mlie(uint8_t *buf, qdf_size_t buflen, uint8_t **mlieseq,
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qdf_size_t *mlieseqlen);
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/**
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* util_get_mlie_variant - Get the variant of the given Multi-Link element or
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* element fragment sequence.
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*
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* @mlieseq: Starting address of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @mlieseqlen: Total length of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @variant: Pointer to the location where the value of the variant should be
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* updated. On success, the value should be interpreted by the caller as a
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* member of enum wlan_ml_variant. (This enum is not directly used as an
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* argument, so that non-MLO code that happens to call this function does not
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* need to be aware of the definition of the enum, though such a call would
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* ultimately result in an error). The value should be ignored by the caller if
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* the function returns error.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure
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*/
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QDF_STATUS
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util_get_mlie_variant(uint8_t *mlieseq, qdf_size_t mlieseqlen,
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int *variant);
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/**
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* util_get_bvmlie_mldmacaddr - Get the MLD MAC address from a given Basic
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* variant Multi-Link element or element fragment sequence.
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*
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* @mlieseq: Starting address of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @mlieseqlen: Total length of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @mldmacaddrfound: Pointer to the location where a boolean status should be
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* updated indicating whether the MLD MAC address was found or not. This should
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* be ignored by the caller if the function returns error.
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* @linkid: Pointer to the location where the MLD MAC address should be updated.
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* This should be ignored by the caller if the function returns error, or if the
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* function indicates that the MLD MAC address was not found.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure
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*/
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QDF_STATUS
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util_get_bvmlie_mldmacaddr(uint8_t *mlieseq, qdf_size_t mlieseqlen,
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bool *mldmacaddrfound,
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struct qdf_mac_addr *mldmacaddr);
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/**
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* util_get_bvmlie_primary_linkid - Get the link identifier from a given Basic
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* variant Multi-Link element or element fragment sequence, of the AP that
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* transmits the Multi-Link element/element fragment sequence or the
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* nontransmitted BSSID in the same multiple BSSID set as the AP that transmits
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* the Multi-Link element/element fragment sequence and that is affiliated with
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* the MLD that is described in the Multi-Link element.
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*
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* @mlieseq: Starting address of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @mlieseqlen: Total length of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @linkidfound: Pointer to the location where a boolean status should be
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* updated indicating whether the link identifier was found or not. This should
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* be ignored by the caller if the function returns error.
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* @linkid: Pointer to the location where the value of the link identifier
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* should be updated. This should be ignored by the caller if the function
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* returns error, or if the function indicates that the link identifier was not
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* found.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure
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*/
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QDF_STATUS
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util_get_bvmlie_primary_linkid(uint8_t *mlieseq, qdf_size_t mlieseqlen,
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bool *linkidfound, uint8_t *linkid);
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/**
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* util_get_bvmlie_persta_partner_info() - Get per-STA partner link information
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*
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* @mlieseq: Starting address of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @mlieseqlen: Total length of the Multi-Link element or Multi-Link element
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* fragment sequence
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* @partner_info: Pointer to the location where the partner link information
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* should be updated. This should be ignored by the caller if the function
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* returns error. Note that success will be returned and the number of links in
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* this structure will be reported as 0, if no Link Info is found, or no per-STA
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* profile is found, or if none of the per-STA profiles includes a MAC address
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* in the STA Info field (assuming no errors are encountered).
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*
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* Get partner link information in the per-STA profiles present in a Basic
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* variant Multi-Link element. The partner link information is returned only for
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* those per-STA profiles which have a MAC address in the STA Info field.
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*
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* Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
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* the reason for error in the case of failure
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*/
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QDF_STATUS
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util_get_bvmlie_persta_partner_info(uint8_t *mlieseq,
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qdf_size_t mlieseqlen,
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struct mlo_partner_info *partner_info);
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#else
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static inline QDF_STATUS
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util_gen_link_assoc_req(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
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struct qdf_mac_addr link_addr,
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uint8_t *link_frame,
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qdf_size_t link_frame_maxsize,
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qdf_size_t *link_frame_len)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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static inline QDF_STATUS
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util_gen_link_assoc_rsp(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
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struct qdf_mac_addr link_addr,
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uint8_t *link_frame,
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qdf_size_t link_frame_maxsize,
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qdf_size_t *link_frame_len)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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static inline QDF_STATUS
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util_find_mlie(uint8_t *buf, qdf_size_t buflen, uint8_t **mlieseq,
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qdf_size_t *mlieseqlen)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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static inline QDF_STATUS
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util_get_mlie_variant(uint8_t *mlieseq, qdf_size_t mlieseqlen,
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int *variant)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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static inline QDF_STATUS
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util_get_bvmlie_mldmacaddr(uint8_t *mlieseq, qdf_size_t mlieseqlen,
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bool *mldmacaddrfound,
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struct qdf_mac_addr *mldmacaddr)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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static inline QDF_STATUS
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util_get_bvmlie_primary_linkid(uint8_t *mlieseq, qdf_size_t mlieseqlen,
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bool *linkidfound, uint8_t *linkid)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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static inline QDF_STATUS
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util_get_bvmlie_persta_partner_info(uint8_t *mlieseq,
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qdf_size_t mlieseqlen,
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struct mlo_partner_info *partner_info)
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{
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return QDF_STATUS_E_NOSUPPORT;
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}
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#endif /* WLAN_FEATURE_11BE_MLO */
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#endif /* _WLAN_UTILS_MLO_H_ */
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