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qcacld-3.0: Add support to indicate subnet change status to user space

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LFR3 to indicate the change in IP subnet to user space (supplicant).
This enables the DHCP refresh in case of IP subnet change during
roaming.

Change-Id: I9842a28461346fe97ab39f5a11ae504f2e32fa16
CRs-Fixed: 876335
This commit is contained in:
Ravi Joshi 2015-11-13 11:30:43 -08:00 • committed by Satish Singh
commit 277ae9beed
5 changed files with 32 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

20
core/hdd/src/wlan_hdd_cfg80211.c
View file

@ -3012,7 +3012,7 @@ int wlan_hdd_send_roam_auth_event(hdd_context_t *hdd_ctx_ptr, uint8_t *bssid,
ETH_ALEN + req_rsn_len + rsp_rsn_len +
sizeof(uint8_t) + SIR_REPLAY_CTR_LEN +
SIR_KCK_KEY_LEN + SIR_KCK_KEY_LEN +
(7 * NLMSG_HDRLEN),
sizeof(uint8_t) + (8 * NLMSG_HDRLEN),
QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_ROAM_AUTH_INDEX,
GFP_KERNEL);
@ -3057,6 +3057,24 @@ int wlan_hdd_send_roam_auth_event(hdd_context_t *hdd_ctx_ptr, uint8_t *bssid,
}
}
hddLog(CDF_TRACE_LEVEL_DEBUG, FL("Subnet Change Status = %d"),
roam_info_ptr->subnet_change_status);
/*
* Add subnet change status if subnet has changed
* 0 = unchanged
* 1 = changed
* 2 = unknown
*/
if (roam_info_ptr->subnet_change_status) {
if (nla_put_u8(skb,
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_SUBNET_STATUS,
roam_info_ptr->subnet_change_status)) {
hddLog(CDF_TRACE_LEVEL_ERROR, FL("nla put fail"));
goto nla_put_failure;
}
}
cfg80211_vendor_event(skb, GFP_KERNEL);
return 0;

2
core/hdd/src/wlan_hdd_cfg80211.h
View file

@ -1554,6 +1554,7 @@ enum qca_wlan_vendor_attr_set_no_dfs_flag {
* @QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_KEY_REPLAY_CTR: Replay Counter
* @QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_PTK_KCK: KCK of the PTK
* @QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_PTK_KEK: KEK of the PTK
* @QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_SUBNET_STATUS: subnet change status
*/
enum qca_wlan_vendor_attr_roam_auth {
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_INVALID = 0,
@ -1564,6 +1565,7 @@ enum qca_wlan_vendor_attr_roam_auth {
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_KEY_REPLAY_CTR,
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_PTK_KCK,
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_PTK_KEK,
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_SUBNET_STATUS,
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_AFTER_LAST,
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_MAX =
QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_AFTER_LAST - 1

1
core/sme/inc/csr_api.h
View file

@ -1351,6 +1351,7 @@ typedef struct tagCsrRoamInfo {
uint8_t kck[SIR_KCK_KEY_LEN];
uint8_t kek[SIR_KEK_KEY_LEN];
uint8_t replay_ctr[SIR_REPLAY_CTR_LEN];
uint8_t subnet_change_status;
#endif
tSirSmeChanInfo chan_info;
uint8_t target_channel;

7
core/sme/inc/csr_internal.h
View file

@ -1202,6 +1202,13 @@ typedef struct tagCsrRoamStruct {
(eCsrLostLink2 == (pCommand)->u.roamCmd.roamReason) || \
(eCsrLostLink3 == (pCommand)->u.roamCmd.roamReason))
#ifdef FEATURE_LFR_SUBNET_DETECTION
/* bit-4 and bit-5 indicate the subnet status */
#define CSR_GET_SUBNET_STATUS(roam_reason) (((roam_reason) & 0x30) >> 4)
#else
#define CSR_GET_SUBNET_STATUS(roam_reason) (0)
#endif
CDF_STATUS csr_get_channel_and_power_list(tpAniSirGlobal pMac);
CDF_STATUS csrScanFilter11dResult(tpAniSirGlobal pMac);

3
core/sme/src/csr/csr_api_roam.c
View file

@ -6440,6 +6440,9 @@ static void csr_roam_process_join_res(tpAniSirGlobal mac_ctx,
FL
("LFR3: Copy KCK, KEK and Replay Ctr"));
}
roam_info.subnet_change_status =
CSR_GET_SUBNET_STATUS(roam_offload_params->roamReason);
#endif
csr_roam_call_callback(mac_ctx, session_id, &roam_info,
cmd->u.roamCmd.roamId,