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openwrtv3/package/kernel/mac80211/patches/327-v4.17-0004-brcmfmac-allocate-struct-brcmf_pub-instance-using-wi.patch
Rafał Miłecki 3c8bb92655 mac80211: backport brcmfmac data structure rework 
It backports brcmfmac commits from kernel 4.17.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-06-17 22:46:35 +02:00

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From 856d5a011c86b59f6564be4508912fb1d866adfc Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 22 Mar 2018 21:28:23 +0100
Subject: [PATCH] brcmfmac: allocate struct brcmf_pub instance using
wiphy_new()
Rework the driver so the wiphy instance holds the main driver information
in its private buffer. Previously it held struct brcmf_cfg80211_info
instance so a bit of reorg was needed. This was done so that the wiphy
name or its parent device can be shown in debug output.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../wireless/broadcom/brcm80211/brcmfmac/btcoex.c | 2 +-
.../broadcom/brcm80211/brcmfmac/cfg80211.c | 86 ++++++++++------------
.../broadcom/brcm80211/brcmfmac/cfg80211.h | 17 +++--
.../wireless/broadcom/brcm80211/brcmfmac/common.c | 2 +
.../wireless/broadcom/brcm80211/brcmfmac/core.c | 27 +++++--
.../wireless/broadcom/brcm80211/brcmfmac/core.h | 1 +
.../net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 2 +-
7 files changed, 76 insertions(+), 61 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/btcoex.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/btcoex.c
@@ -462,7 +462,7 @@ static void brcmf_btcoex_dhcp_end(struct
int brcmf_btcoex_set_mode(struct brcmf_cfg80211_vif *vif,
enum brcmf_btcoex_mode mode, u16 duration)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(vif->wdev.wiphy);
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
struct brcmf_btcoex_info *btci = cfg->btcoex;
struct brcmf_if *ifp = brcmf_get_ifp(cfg->pub, 0);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -753,7 +753,7 @@ s32 brcmf_notify_escan_complete(struct b
static int brcmf_cfg80211_del_ap_iface(struct wiphy *wiphy,
struct wireless_dev *wdev)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct net_device *ndev = wdev->netdev;
struct brcmf_if *ifp = netdev_priv(ndev);
int ret;
@@ -786,7 +786,7 @@ err_unarm:
static
int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct net_device *ndev = wdev->netdev;
if (ndev && ndev == cfg_to_ndev(cfg))
@@ -831,7 +831,7 @@ brcmf_cfg80211_change_iface(struct wiphy
enum nl80211_iftype type,
struct vif_params *params)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_cfg80211_vif *vif = ifp->vif;
s32 infra = 0;
@@ -2127,17 +2127,15 @@ static s32
brcmf_cfg80211_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
s32 *dbm)
{
- struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
- struct net_device *ndev = cfg_to_ndev(cfg);
- struct brcmf_if *ifp = netdev_priv(ndev);
+ struct brcmf_cfg80211_vif *vif = wdev_to_vif(wdev);
s32 qdbm = 0;
s32 err;
brcmf_dbg(TRACE, "Enter\n");
- if (!check_vif_up(ifp->vif))
+ if (!check_vif_up(vif))
return -EIO;
- err = brcmf_fil_iovar_int_get(ifp, "qtxpower", &qdbm);
+ err = brcmf_fil_iovar_int_get(vif->ifp, "qtxpower", &qdbm);
if (err) {
brcmf_err("error (%d)\n", err);
goto done;
@@ -3359,7 +3357,7 @@ brcmf_cfg80211_sched_scan_start(struct w
struct cfg80211_sched_scan_request *req)
{
struct brcmf_if *ifp = netdev_priv(ndev);
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
brcmf_dbg(SCAN, "Enter: n_match_sets=%d n_ssids=%d\n",
req->n_match_sets, req->n_ssids);
@@ -5191,6 +5189,12 @@ static struct cfg80211_ops brcmf_cfg8021
.del_pmk = brcmf_cfg80211_del_pmk,
};
+struct cfg80211_ops *brcmf_cfg80211_get_ops(void)
+{
+ return kmemdup(&brcmf_cfg80211_ops, sizeof(brcmf_cfg80211_ops),
+ GFP_KERNEL);
+}
+
struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg,
enum nl80211_iftype type)
{
@@ -5898,7 +5902,7 @@ static void brcmf_update_bw40_channel_fl
static int brcmf_construct_chaninfo(struct brcmf_cfg80211_info *cfg,
u32 bw_cap[])
{
- struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
+ struct brcmf_if *ifp = brcmf_get_ifp(cfg->pub, 0);
struct ieee80211_supported_band *band;
struct ieee80211_channel *channel;
struct wiphy *wiphy;
@@ -6013,7 +6017,7 @@ fail_pbuf:
static int brcmf_enable_bw40_2g(struct brcmf_cfg80211_info *cfg)
{
- struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
+ struct brcmf_if *ifp = brcmf_get_ifp(cfg->pub, 0);
struct ieee80211_supported_band *band;
struct brcmf_fil_bwcap_le band_bwcap;
struct brcmf_chanspec_list *list;
@@ -6198,10 +6202,10 @@ static void brcmf_update_vht_cap(struct
}
}
-static int brcmf_setup_wiphybands(struct wiphy *wiphy)
+static int brcmf_setup_wiphybands(struct brcmf_cfg80211_info *cfg)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
- struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
+ struct brcmf_if *ifp = brcmf_get_ifp(cfg->pub, 0);
+ struct wiphy *wiphy;
u32 nmode = 0;
u32 vhtmode = 0;
u32 bw_cap[2] = { WLC_BW_20MHZ_BIT, WLC_BW_20MHZ_BIT };
@@ -6795,8 +6799,8 @@ static s32 brcmf_translate_country_code(
static void brcmf_cfg80211_reg_notifier(struct wiphy *wiphy,
struct regulatory_request *req)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
- struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
+ struct brcmf_if *ifp = brcmf_get_ifp(cfg->pub, 0);
struct brcmf_fil_country_le ccreq;
s32 err;
int i;
@@ -6831,7 +6835,7 @@ static void brcmf_cfg80211_reg_notifier(
brcmf_err("Firmware rejected country setting\n");
return;
}
- brcmf_setup_wiphybands(wiphy);
+ brcmf_setup_wiphybands(cfg);
}
static void brcmf_free_wiphy(struct wiphy *wiphy)
@@ -6858,17 +6862,15 @@ static void brcmf_free_wiphy(struct wiph
if (wiphy->wowlan != &brcmf_wowlan_support)
kfree(wiphy->wowlan);
#endif
- wiphy_free(wiphy);
}
struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
- struct device *busdev,
+ struct cfg80211_ops *ops,
bool p2pdev_forced)
{
+ struct wiphy *wiphy = drvr->wiphy;
struct net_device *ndev = brcmf_get_ifp(drvr, 0)->ndev;
struct brcmf_cfg80211_info *cfg;
- struct wiphy *wiphy;
- struct cfg80211_ops *ops;
struct brcmf_cfg80211_vif *vif;
struct brcmf_if *ifp;
s32 err = 0;
@@ -6880,26 +6882,13 @@ struct brcmf_cfg80211_info *brcmf_cfg802
return NULL;
}
- ops = kmemdup(&brcmf_cfg80211_ops, sizeof(*ops), GFP_KERNEL);
- if (!ops)
- return NULL;
-
- ifp = netdev_priv(ndev);
-#ifdef CONFIG_PM
- if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL_GTK))
- ops->set_rekey_data = brcmf_cfg80211_set_rekey_data;
-#endif
- wiphy = wiphy_new(ops, sizeof(struct brcmf_cfg80211_info));
- if (!wiphy) {
+ cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
+ if (!cfg) {
brcmf_err("Could not allocate wiphy device\n");
- goto ops_out;
+ return NULL;
}
- memcpy(wiphy->perm_addr, drvr->mac, ETH_ALEN);
- set_wiphy_dev(wiphy, busdev);
- cfg = wiphy_priv(wiphy);
cfg->wiphy = wiphy;
- cfg->ops = ops;
cfg->pub = drvr;
init_vif_event(&cfg->vif_event);
INIT_LIST_HEAD(&cfg->vif_list);
@@ -6908,6 +6897,7 @@ struct brcmf_cfg80211_info *brcmf_cfg802
if (IS_ERR(vif))
goto wiphy_out;
+ ifp = netdev_priv(ndev);
vif->ifp = ifp;
vif->wdev.netdev = ndev;
ndev->ieee80211_ptr = &vif->wdev;
@@ -6934,6 +6924,11 @@ struct brcmf_cfg80211_info *brcmf_cfg802
if (err < 0)
goto priv_out;
+ /* regulatory notifer below needs access to cfg so
+ * assign it now.
+ */
+ drvr->config = cfg;
+
brcmf_dbg(INFO, "Registering custom regulatory\n");
wiphy->reg_notifier = brcmf_cfg80211_reg_notifier;
wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
@@ -6947,13 +6942,17 @@ struct brcmf_cfg80211_info *brcmf_cfg802
cap = &wiphy->bands[NL80211_BAND_2GHZ]->ht_cap.cap;
*cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
}
+#ifdef CONFIG_PM
+ if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL_GTK))
+ ops->set_rekey_data = brcmf_cfg80211_set_rekey_data;
+#endif
err = wiphy_register(wiphy);
if (err < 0) {
brcmf_err("Could not register wiphy device (%d)\n", err);
goto priv_out;
}
- err = brcmf_setup_wiphybands(wiphy);
+ err = brcmf_setup_wiphybands(cfg);
if (err) {
brcmf_err("Setting wiphy bands failed (%d)\n", err);
goto wiphy_unreg_out;
@@ -6970,12 +6969,7 @@ struct brcmf_cfg80211_info *brcmf_cfg802
else
*cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
}
- /* p2p might require that "if-events" get processed by fweh. So
- * activate the already registered event handlers now and activate
- * the rest when initialization has completed. drvr->config needs to
- * be assigned before activating events.
- */
- drvr->config = cfg;
+
err = brcmf_fweh_activate_events(ifp);
if (err) {
brcmf_err("FWEH activation failed (%d)\n", err);
@@ -7043,8 +7037,7 @@ priv_out:
ifp->vif = NULL;
wiphy_out:
brcmf_free_wiphy(wiphy);
-ops_out:
- kfree(ops);
+ kfree(cfg);
return NULL;
}
@@ -7059,4 +7052,5 @@ void brcmf_cfg80211_detach(struct brcmf_
kfree(cfg->ops);
wl_deinit_priv(cfg);
brcmf_free_wiphy(cfg->wiphy);
+ kfree(cfg);
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h
@@ -355,20 +355,24 @@ static inline struct wiphy *cfg_to_wiphy
static inline struct brcmf_cfg80211_info *wiphy_to_cfg(struct wiphy *w)
{
- return (struct brcmf_cfg80211_info *)(wiphy_priv(w));
+ struct brcmf_pub *drvr = wiphy_priv(w);
+ return drvr->config;
}
static inline struct brcmf_cfg80211_info *wdev_to_cfg(struct wireless_dev *wd)
{
- return (struct brcmf_cfg80211_info *)(wdev_priv(wd));
+ return wiphy_to_cfg(wd->wiphy);
+}
+
+static inline struct brcmf_cfg80211_vif *wdev_to_vif(struct wireless_dev *wdev)
+{
+ return container_of(wdev, struct brcmf_cfg80211_vif, wdev);
}
static inline
struct net_device *cfg_to_ndev(struct brcmf_cfg80211_info *cfg)
{
- struct brcmf_cfg80211_vif *vif;
- vif = list_first_entry(&cfg->vif_list, struct brcmf_cfg80211_vif, list);
- return vif->wdev.netdev;
+ return brcmf_get_ifp(cfg->pub, 0)->ndev;
}
static inline struct brcmf_cfg80211_info *ndev_to_cfg(struct net_device *ndev)
@@ -395,11 +399,12 @@ brcmf_cfg80211_connect_info *cfg_to_conn
}
struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
- struct device *busdev,
+ struct cfg80211_ops *ops,
bool p2pdev_forced);
void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg);
s32 brcmf_cfg80211_up(struct net_device *ndev);
s32 brcmf_cfg80211_down(struct net_device *ndev);
+struct cfg80211_ops *brcmf_cfg80211_get_ops(void);
enum nl80211_iftype brcmf_cfg80211_get_iftype(struct brcmf_if *ifp);
struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg,
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
@@ -252,6 +252,7 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
brcmf_err("Retreiving cur_etheraddr failed, %d\n", err);
goto done;
}
+ memcpy(ifp->drvr->wiphy->perm_addr, ifp->drvr->mac, ETH_ALEN);
memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));
bus = ifp->drvr->bus_if;
@@ -279,6 +280,7 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
ri->chippkg = le32_to_cpu(revinfo.chippkg);
ri->nvramrev = le32_to_cpu(revinfo.nvramrev);
+ /* use revinfo if not known yet */
if (!bus->chip) {
bus->chip = le32_to_cpu(revinfo.chipnum);
bus->chiprev = le32_to_cpu(revinfo.chiprev);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1021,7 +1021,7 @@ static int brcmf_revinfo_read(struct seq
return 0;
}
-static int brcmf_bus_started(struct brcmf_pub *drvr)
+static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
{
int ret = -1;
struct brcmf_bus *bus_if = drvr->bus_if;
@@ -1060,7 +1060,7 @@ static int brcmf_bus_started(struct brcm
brcmf_proto_add_if(drvr, ifp);
- drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev,
+ drvr->config = brcmf_cfg80211_attach(drvr, ops,
drvr->settings->p2p_enable);
if (drvr->config == NULL) {
ret = -ENOMEM;
@@ -1115,17 +1115,26 @@ fail:
int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
{
+ struct wiphy *wiphy;
+ struct cfg80211_ops *ops;
struct brcmf_pub *drvr = NULL;
int ret = 0;
int i;
brcmf_dbg(TRACE, "Enter\n");
- /* Allocate primary brcmf_info */
- drvr = kzalloc(sizeof(*drvr), GFP_ATOMIC);
- if (!drvr)
+ ops = brcmf_cfg80211_get_ops();
+ if (!ops)
return -ENOMEM;
+ wiphy = wiphy_new(ops, sizeof(*drvr));
+ if (!wiphy)
+ return -ENOMEM;
+
+ set_wiphy_dev(wiphy, dev);
+ drvr = wiphy_priv(wiphy);
+ drvr->wiphy = wiphy;
+
for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
@@ -1154,15 +1163,18 @@ int brcmf_attach(struct device *dev, str
/* attach firmware event handler */
brcmf_fweh_attach(drvr);
- ret = brcmf_bus_started(drvr);
+ ret = brcmf_bus_started(drvr, ops);
if (ret != 0) {
brcmf_err("dongle is not responding: err=%d\n", ret);
goto fail;
}
+
+ drvr->config->ops = ops;
return 0;
fail:
brcmf_detach(dev);
+ kfree(ops);
return ret;
}
@@ -1220,6 +1232,7 @@ void brcmf_detach(struct device *dev)
brcmf_remove_interface(drvr->iflist[i], false);
brcmf_cfg80211_detach(drvr->config);
+ drvr->config = NULL;
brcmf_bus_stop(drvr->bus_if);
@@ -1227,7 +1240,7 @@ void brcmf_detach(struct device *dev)
brcmf_debug_detach(drvr);
bus_if->drvr = NULL;
- kfree(drvr);
+ wiphy_free(drvr->wiphy);
}
s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
@@ -107,6 +107,7 @@ struct brcmf_pub {
/* Linkage ponters */
struct brcmf_bus *bus_if;
struct brcmf_proto *proto;
+ struct wiphy *wiphy;
struct brcmf_cfg80211_info *config;
/* Internal brcmf items */
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -2229,7 +2229,7 @@ fail:
*/
int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
{
- struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
+ struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct brcmf_p2p_info *p2p = &cfg->p2p;
struct brcmf_cfg80211_vif *vif;
enum nl80211_iftype iftype;
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