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qcacmn: Update dp_peer structure to store qdf timers to detect DOS attack

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Update dp_peer structure to store qdf timers to detect DOS attack. Following
driver ops are registerd to access the dp peer information
    - last_assoc_received
    - last_disassoc_received
    - last_deaauth_received
    - clear_peer

Change-Id: I21a3f4e5ab626e62f58f307d02640b7d96c9b1ef
CRs-Fixed: 1116647
This commit is contained in:
Krishna Kumaar Natarajan
2017-01-25 15:48:43 -08:00
committed by qcabuildsw
parent ecfb31c7ae
commit d684ba2f05
5 changed files with 85 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
dp/inc/cdp_txrx_peer_ops.h
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2016 The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
@@ -61,7 +61,7 @@ cdp_peer_register(ol_txrx_soc_handle soc, void *pdev,
}
/**
* cdp_peer_clear() - remove peer from physical device
* cdp_clear_peer() - remove peer from physical device
* @soc - data path soc handle
* @pdev - data path device instance
* @sta_id - local peer id
@@ -72,7 +72,7 @@ cdp_peer_register(ol_txrx_soc_handle soc, void *pdev,
* QDF_STATUS_E_NOSUPPORT not support this feature
*/
static inline QDF_STATUS
cdp_peer_clear(ol_txrx_soc_handle soc, void *pdev, uint8_t sta_id)
cdp_clear_peer(ol_txrx_soc_handle soc, void *pdev, uint8_t sta_id)
{
if (!soc || !soc->ops || !soc->ops->peer_ops) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
@@ -80,6 +80,9 @@ cdp_peer_clear(ol_txrx_soc_handle soc, void *pdev, uint8_t sta_id)
return QDF_STATUS_E_INVAL;
}
if (soc->ops->peer_ops->clear_peer)
return soc->ops->peer_ops->clear_peer(pdev, sta_id);
return QDF_STATUS_E_NOSUPPORT;
}

4
dp/wifi3.0/dp_internal.h
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@@ -58,6 +58,7 @@ extern void dp_peer_find_hash_add(struct dp_soc *soc, struct dp_peer *peer);
extern void dp_peer_find_hash_remove(struct dp_soc *soc, struct dp_peer *peer);
extern void dp_peer_find_hash_erase(struct dp_soc *soc);
extern void dp_peer_rx_init(struct dp_pdev *pdev, struct dp_peer *peer);
extern void dp_peer_cleanup(struct dp_vdev *vdev, struct dp_peer *peer);
extern void dp_peer_rx_cleanup(struct dp_vdev *vdev, struct dp_peer *peer);
extern void dp_peer_unref_delete(void *peer_handle);
extern void dp_rx_discard(struct dp_vdev *vdev, struct dp_peer *peer,
@@ -81,6 +82,9 @@ int dp_get_peer_state(void *peer_handle);
void dp_local_peer_id_pool_init(struct dp_pdev *pdev);
void dp_local_peer_id_alloc(struct dp_pdev *pdev, struct dp_peer *peer);
void dp_local_peer_id_free(struct dp_pdev *pdev, struct dp_peer *peer);
qdf_time_t *dp_get_last_assoc_received(void *peer_handle);
qdf_time_t *dp_get_last_disassoc_received(void *peer_handle);
qdf_time_t *dp_get_last_deauth_received(void *peer_handle);
#endif
extern int dp_addba_requestprocess_wifi3(void *peer_handle,
uint8_t dialogtoken, uint16_t tid, uint16_t batimeout,

11
dp/wifi3.0/dp_main.c
View File

@@ -1425,6 +1425,10 @@ static void dp_peer_setup_wifi3(void *vdev_hdl, void *peer_hdl)
dp_peer_rx_init(pdev, peer);
peer->last_assoc_rcvd = 0;
peer->last_disassoc_rcvd = 0;
peer->last_deauth_rcvd = 0;
if (soc->cdp_soc.ol_ops->peer_set_default_routing) {
/* TODO: Check the destination ring number to be passed to FW */
soc->cdp_soc.ol_ops->peer_set_default_routing(soc->osif_soc,
@@ -1517,8 +1521,8 @@ void dp_peer_unref_delete(void *peer_handle)
peer, vdev, &peer->vdev->peer_list);
}
/* cleanup the Rx reorder queues for this peer */
dp_peer_rx_cleanup(vdev, peer);
/* cleanup the peer data */
dp_peer_cleanup(vdev, peer);
/* check whether the parent vdev has no peers left */
if (TAILQ_EMPTY(&vdev->peer_list)) {
@@ -1774,6 +1778,9 @@ static struct cdp_peer_ops dp_ops_peer = {
.peer_get_peer_mac_addr = dp_peer_get_peer_mac_addr,
.get_vdev_for_peer = dp_get_vdev_for_peer,
.get_peer_state = dp_get_peer_state,
.last_assoc_received = dp_get_last_assoc_received,
.last_disassoc_received = dp_get_last_disassoc_received,
.last_deauth_received = dp_get_last_deauth_received,
};
#endif

61
dp/wifi3.0/dp_peer.c
View File

@@ -760,6 +760,22 @@ void dp_peer_rx_cleanup(struct dp_vdev *vdev, struct dp_peer *peer)
#endif
}
/*
* dp_peer_cleanup() – Cleanup peer information
* @vdev: Datapath vdev
* @peer: Datapath peer
*
*/
void dp_peer_cleanup(struct dp_vdev *vdev, struct dp_peer *peer)
{
peer->last_assoc_rcvd = 0;
peer->last_disassoc_rcvd = 0;
peer->last_deauth_rcvd = 0;
/* cleanup the Rx reorder queues for this peer */
dp_peer_rx_cleanup(vdev, peer);
}
/*
* dp_rx_addba_requestprocess_wifi3() – Process ADDBA request from peer
*
@@ -1167,6 +1183,51 @@ int dp_get_peer_state(void *peer_handle)
return peer->state;
}
/**
* dp_get_last_assoc_received() - get time of last assoc received
* @peer_handle: peer handle
*
* Return: pointer for the time of last assoc received
*/
qdf_time_t *dp_get_last_assoc_received(void *peer_handle)
{
struct dp_peer *peer = peer_handle;
DP_TRACE(INFO, "peer %p last_assoc_rcvd: %lu", peer,
peer->last_assoc_rcvd);
return &peer->last_assoc_rcvd;
}
/**
* dp_get_last_disassoc_received() - get time of last disassoc received
* @peer_handle: peer handle
*
* Return: pointer for the time of last disassoc received
*/
qdf_time_t *dp_get_last_disassoc_received(void *peer_handle)
{
struct dp_peer *peer = peer_handle;
DP_TRACE(INFO, "peer %p last_disassoc_rcvd: %lu", peer,
peer->last_disassoc_rcvd);
return &peer->last_disassoc_rcvd;
}
/**
* dp_get_last_deauth_received() - get time of last deauth received
* @peer_handle: peer handle
*
* Return: pointer for the time of last deauth received
*/
qdf_time_t *dp_get_last_deauth_received(void *peer_handle)
{
struct dp_peer *peer = peer_handle;
DP_TRACE(INFO, "peer %p last_deauth_rcvd: %lu", peer,
peer->last_deauth_rcvd);
return &peer->last_deauth_rcvd;
}
/**
* dp_local_peer_id_pool_init() - local peer id pool alloc for physical device
* @pdev - data path device instance

6
dp/wifi3.0/dp_types.h
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2017 The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@@ -711,6 +711,10 @@ struct dp_peer {
uint16_t local_id;
enum ol_txrx_peer_state state;
qdf_spinlock_t peer_info_lock;
qdf_time_t last_assoc_rcvd;
qdf_time_t last_disassoc_rcvd;
qdf_time_t last_deauth_rcvd;
/* TBD */
};