cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/ath/ath10k/p2p.c

/*
 * Copyright (c) 2015 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "core.h"
#include "wmi.h"
#include "mac.h"
#include "p2p.h"


static void ath10k_p2p_noa_ie_fill(u8 *data, size_t len, const struct wmi_p2p_noa_info *noa) { struct ieee80211_p2p_noa_attr *noa_attr; u8 ctwindow_oppps = noa->ctwindow_oppps; u8 ctwindow = ctwindow_oppps >> WMI_P2P_OPPPS_CTWINDOW_OFFSET; bool oppps = !!(ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT); __le16 *noa_attr_len; u16 attr_len; u8 noa_descriptors = noa->num_descriptors; int i; /* P2P IE */ data[0] = WLAN_EID_VENDOR_SPECIFIC; data[1] = len - 2; data[2] = (WLAN_OUI_WFA >> 16) & 0xff; data[3] = (WLAN_OUI_WFA >> 8) & 0xff; data[4] = (WLAN_OUI_WFA >> 0) & 0xff; data[5] = WLAN_OUI_TYPE_WFA_P2P; /* NOA ATTR */ data[6] = IEEE80211_P2P_ATTR_ABSENCE_NOTICE; noa_attr_len = (__le16 *)&data[7]; /* 2 bytes */ noa_attr = (struct ieee80211_p2p_noa_attr *)&data[9]; noa_attr->index = noa->index; noa_attr->oppps_ctwindow = ctwindow; if (oppps) noa_attr->oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; for (i = 0; i < noa_descriptors; i++) { noa_attr->desc[i].count = __le32_to_cpu(noa->descriptors[i].type_count); noa_attr->desc[i].duration = noa->descriptors[i].duration; noa_attr->desc[i].interval = noa->descriptors[i].interval; noa_attr->desc[i].start_time = noa->descriptors[i].start_time; } attr_len = 2; /* index + oppps_ctwindow */ attr_len += noa_descriptors * sizeof(struct ieee80211_p2p_noa_desc); *noa_attr_len = __cpu_to_le16(attr_len); }

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PersonTokensPropCommitsCommitProp
Michal Kazior300100.00%1100.00%
Total300100.00%1100.00%


static size_t ath10k_p2p_noa_ie_len_compute(const struct wmi_p2p_noa_info *noa) { size_t len = 0; if (!noa->num_descriptors && !(noa->ctwindow_oppps & WMI_P2P_OPPPS_ENABLE_BIT)) return 0; len += 1 + 1 + 4; /* EID + len + OUI */ len += 1 + 2; /* noa attr + attr len */ len += 1 + 1; /* index + oppps_ctwindow */ len += noa->num_descriptors * sizeof(struct ieee80211_p2p_noa_desc); return len; }

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PersonTokensPropCommitsCommitProp
Michal Kazior74100.00%1100.00%
Total74100.00%1100.00%


static void ath10k_p2p_noa_ie_assign(struct ath10k_vif *arvif, void *ie, size_t len) { struct ath10k *ar = arvif->ar; lockdep_assert_held(&ar->data_lock); kfree(arvif->u.ap.noa_data); arvif->u.ap.noa_data = ie; arvif->u.ap.noa_len = len; }

Contributors

PersonTokensPropCommitsCommitProp
Michal Kazior66100.00%1100.00%
Total66100.00%1100.00%


static void __ath10k_p2p_noa_update(struct ath10k_vif *arvif, const struct wmi_p2p_noa_info *noa) { struct ath10k *ar = arvif->ar; void *ie; size_t len; lockdep_assert_held(&ar->data_lock); ath10k_p2p_noa_ie_assign(arvif, NULL, 0); len = ath10k_p2p_noa_ie_len_compute(noa); if (!len) return; ie = kmalloc(len, GFP_ATOMIC); if (!ie) return; ath10k_p2p_noa_ie_fill(ie, len, noa); ath10k_p2p_noa_ie_assign(arvif, ie, len); }

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PersonTokensPropCommitsCommitProp
Michal Kazior96100.00%1100.00%
Total96100.00%1100.00%


void ath10k_p2p_noa_update(struct ath10k_vif *arvif, const struct wmi_p2p_noa_info *noa) { struct ath10k *ar = arvif->ar; spin_lock_bh(&ar->data_lock); __ath10k_p2p_noa_update(arvif, noa); spin_unlock_bh(&ar->data_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Michal Kazior48100.00%1100.00%
Total48100.00%1100.00%

struct ath10k_p2p_noa_arg { u32 vdev_id; const struct wmi_p2p_noa_info *noa; };
static void ath10k_p2p_noa_update_vdev_iter(void *data, u8 *mac, struct ieee80211_vif *vif) { struct ath10k_vif *arvif = (void *)vif->drv_priv; struct ath10k_p2p_noa_arg *arg = data; if (arvif->vdev_id != arg->vdev_id) return; ath10k_p2p_noa_update(arvif, arg->noa); }

Contributors

PersonTokensPropCommitsCommitProp
Michal Kazior5389.83%150.00%
Amadeusz Sławiński610.17%150.00%
Total59100.00%2100.00%


void ath10k_p2p_noa_update_by_vdev_id(struct ath10k *ar, u32 vdev_id, const struct wmi_p2p_noa_info *noa) { struct ath10k_p2p_noa_arg arg = { .vdev_id = vdev_id, .noa = noa, }; ieee80211_iterate_active_interfaces_atomic(ar->hw, IEEE80211_IFACE_ITER_NORMAL, ath10k_p2p_noa_update_vdev_iter, &arg); }

Contributors

PersonTokensPropCommitsCommitProp
Michal Kazior49100.00%1100.00%
Total49100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Michal Kazior71399.17%266.67%
Amadeusz Sławiński60.83%133.33%
Total719100.00%3100.00%
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