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qcacld-3.0: Stop pmf comeback timer on deauth/disassoc rx

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For PMF connection, when host gets assoc response fail with reason
"try again later" host runs PMF comeback timer to send assoc request
on pmf timer expiry. While PMF timer is running, if host gets
deauth/disassoc frame then host performs deauth/disassoc. As part
part of deauth/disassoc host changes lim mlm states to WT_DEL_BSS/
WT_DEL_STA and after moving vdev to down state host processes
DEL_BSS/DEL_STA response in LIM. At this stage expected lim mlm
state is WT_DEL_BSS/WT_DEL_STA but if the pmf timer expires the
pmf timer callback function changes lim mlm states to mlm states
stored in comeback timer info struct without checking present lim
mlm states.
Thus while processing DEL_BSS/DEL_STA response, host fails to get
PE session from vdev ID and lim mlm state WT_DEL_BSS/WT_DEL_STA.
And disconnect indication to sme fails. To fix this, host stops
pmf comeback timer while processing deauth/disassoc and change
lim mlm state after checking present lim mlm state.

Change-Id: If0094fcdb8254cb4271b5c46b4d42531dc9bc516
CRs-Fixed: 2925184
This commit is contained in:
Abhishek Ambure 2021-04-20 12:02:38 +05:30 • committed by Madan Koyyalamudi
commit 82051db26b
3 changed files with 13 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

1
core/mac/src/pe/lim/lim_process_deauth_frame.c
View file

@ -391,6 +391,7 @@ void lim_perform_deauth(struct mac_context *mac_ctx, struct pe_session *pe_sessi
if (lim_search_pre_auth_list(mac_ctx, addr))
lim_delete_pre_auth_node(mac_ctx, addr);
lim_stop_pmfcomeback_timer(pe_session);
if (pe_session->pLimMlmJoinReq) {
qdf_mem_free(pe_session->pLimMlmJoinReq);
pe_session->pLimMlmJoinReq = NULL;

3
core/mac/src/pe/lim/lim_process_disassoc_frame.c
View file

@ -385,6 +385,9 @@ void lim_perform_disassoc(struct mac_context *mac_ctx, int32_t frame_rssi,
/* Update PE session Id */
mlmDisassocInd.sessionId = pe_session->peSessionId;
if (LIM_IS_STA_ROLE(pe_session) &&
(pe_session->limMlmState == eLIM_MLM_WT_ASSOC_RSP_STATE))
lim_stop_pmfcomeback_timer(pe_session);
if (lim_is_reassoc_in_progress(mac_ctx, pe_session)) {

11
core/mac/src/pe/lim/lim_process_mlm_rsp_messages.c
View file

@ -444,8 +444,15 @@ void lim_pmf_comeback_timer_callback(void *context)
return;
}
pe_info("comeback later timer expired. sending MLM ASSOC req for vdev %d",
session->vdev_id);
if (session->limMlmState != eLIM_MLM_WT_ASSOC_RSP_STATE) {
pe_debug("Don't send assoc req, timer expire when limMlmState %d vdev id %d",
session->limMlmState, session->vdev_id);
return;
}
pe_info("comeback later timer expired. sending MLM ASSOC req for vdev %d, session limMlmState %d, info lim_mlm_state %d",
session->vdev_id, session->limMlmState, info->lim_mlm_state);
/* set MLM state such that ASSOC REQ packet will be sent out */
session->limPrevMlmState = info->lim_prev_mlm_state;
session->limMlmState = info->lim_mlm_state;