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iwlwifi: mvm: combine parts of UMAC and LMAC scans 

A lot of the UMAC and LMAC scan code is almost identical.  Grab the
low hanging fruits by combining the obvious parts.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Luciano Coelho 2015-04-01 17:09:56 +03:00 коммит произвёл Emmanuel Grumbach
Родитель 8741145683
Коммит 3db7c6e725
1 изменённых файлов: 50 добавлений и 75 удалений
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125
drivers/net/wireless/iwlwifi/mvm/scan.c
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@ -815,36 +815,18 @@ static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct cfg80211_scan_request *req,
struct ieee80211_scan_ies *ies)
struct ieee80211_scan_ies *ies,
struct iwl_mvm_scan_params *params)
{
struct iwl_host_cmd hcmd = {
.id = SCAN_OFFLOAD_REQUEST_CMD,
.len = { iwl_mvm_scan_size(mvm), },
.data = { mvm->scan_cmd, },
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
struct iwl_scan_probe_req *preq;
struct iwl_mvm_scan_params params = {};
u32 flags;
u32 ssid_bitmap = 0;
int ret, i;
int i;
lockdep_assert_held(&mvm->mutex);
/* we should have failed registration if scan_cmd was NULL */
if (WARN_ON(mvm->scan_cmd == NULL))
return -ENOMEM;
if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
return -ENOBUFS;
mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags,
&params);
iwl_mvm_build_generic_scan_cmd(mvm, cmd, &params);
iwl_mvm_build_generic_scan_cmd(mvm, cmd, params);
cmd->n_channels = (u8)req->n_channels;
@ -853,7 +835,7 @@ static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0)
flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
if (params.passive_fragmented)
if (params->passive_fragmented)
flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
if (req->n_ssids == 0)
@ -906,20 +888,7 @@ static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
req->mac_addr : NULL,
req->mac_addr_mask);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
} else {
/*
* If the scan failed, it usually means that the FW was unable
* to allocate the time events. Warn on it, but maybe we
* should try to send the command again with different params.
*/
IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
ret = -EIO;
}
return ret;
return 0;
}
static int iwl_mvm_sched_scan_lmac(struct iwl_mvm *mvm,
@ -1292,22 +1261,16 @@ static u32 iwl_mvm_scan_umac_common_flags(struct iwl_mvm *mvm, int n_ssids,
static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct cfg80211_scan_request *req,
struct ieee80211_scan_ies *ies)
struct ieee80211_scan_ies *ies,
struct iwl_mvm_scan_params *params)
{
struct iwl_host_cmd hcmd = {
.id = SCAN_REQ_UMAC,
.len = { iwl_mvm_scan_size(mvm), },
.data = { mvm->scan_cmd, },
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data +
sizeof(struct iwl_scan_channel_cfg_umac) *
mvm->fw->ucode_capa.n_scan_channels;
struct iwl_mvm_scan_params params = {};
u32 uid, flags;
u32 ssid_bitmap = 0;
int ret, i, uid_idx;
int i, uid_idx;
lockdep_assert_held(&mvm->mutex);
@ -1315,17 +1278,7 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
if (uid_idx >= mvm->max_scans)
return -EBUSY;
/* we should have failed registration if scan_cmd was NULL */
if (WARN_ON(mvm->scan_cmd == NULL))
return -ENOMEM;
if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
return -ENOBUFS;
iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags,
&params);
iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, &params);
iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, params);
uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_REG_SCAN);
mvm->scan_uid[uid_idx] = uid;
@ -1335,7 +1288,7 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
flags = iwl_mvm_scan_umac_common_flags(mvm, req->n_ssids,
req->ssids,
params.passive_fragmented);
params->passive_fragmented);
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
@ -1366,19 +1319,7 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
iwl_mvm_scan_fill_ssids(sec_part->direct_scan, req->ssids,
req->n_ssids, 0);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
IWL_DEBUG_SCAN(mvm,
"Scan request was sent successfully\n");
} else {
/*
* If the scan failed, it usually means that the FW was unable
* to allocate the time events. Warn on it, but maybe we
* should try to send the command again with different params.
*/
IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
}
return ret;
return 0;
}
static int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm,
@ -1540,6 +1481,12 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct cfg80211_scan_request *req,
struct ieee80211_scan_ies *ies)
{
struct iwl_host_cmd hcmd = {
.len = { iwl_mvm_scan_size(mvm), },
.data = { mvm->scan_cmd, },
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_mvm_scan_params params = {};
int ret;
lockdep_assert_held(&mvm->mutex);
@ -1555,10 +1502,38 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
ret = iwl_mvm_scan_umac(mvm, vif, req, ies);
else
ret = iwl_mvm_scan_lmac(mvm, vif, req, ies);
/* we should have failed registration if scan_cmd was NULL */
if (WARN_ON(!mvm->scan_cmd))
return -ENOMEM;
if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
return -ENOBUFS;
iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags,
&params);
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
hcmd.id = SCAN_REQ_UMAC;
ret = iwl_mvm_scan_umac(mvm, vif, req, ies, &params);
} else {
hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
ret = iwl_mvm_scan_lmac(mvm, vif, req, ies, &params);
}
if (ret)
return ret;
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
} else {
/* If the scan failed, it usually means that the FW was unable
* to allocate the time events. Warn on it, but maybe we
* should try to send the command again with different params.
*/
IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
}
if (ret)
iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);