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openwrt-cghmn-mt300n/package/kernel/mac80211/patches/319-v4.12-0042-brcmfmac-remove-reference-to-fwsignal-data-from-stru.patch
Rafał Miłecki 7da50e5f62 mac80211: brcmfmac: backport BCDC layer changes from kernel 4.12 
Those changes are needed for backporting more recent crash fixes. There
are quite many BCDC patches but it's hopefully a very well tested code
by now.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2019-07-22 14:15:34 +02:00

314 lines
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From acf8ac41dd733508b9e77483f96e53610c87fa64 Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Thu, 6 Apr 2017 13:14:39 +0100
Subject: [PATCH] brcmfmac: remove reference to fwsignal data from struct
brcmf_pub
The fwsignal module is part of the bcdc protocol and as such does
its instance data is not needed in core structure. Moving it into
struct brcmf_bcdc instead.
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>
---
.../broadcom/brcm80211/brcmfmac/bcdc.c | 35 ++++++++++---
.../broadcom/brcm80211/brcmfmac/bcdc.h | 1 +
.../broadcom/brcm80211/brcmfmac/core.h | 2 -
.../broadcom/brcm80211/brcmfmac/fwsignal.c | 51 +++++++++----------
.../broadcom/brcm80211/brcmfmac/fwsignal.h | 4 +-
5 files changed, 54 insertions(+), 39 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -103,9 +103,17 @@ struct brcmf_bcdc {
u8 bus_header[BUS_HEADER_LEN];
struct brcmf_proto_bcdc_dcmd msg;
unsigned char buf[BRCMF_DCMD_MAXLEN];
+ struct brcmf_fws_info *fws;
};
+struct brcmf_fws_info *drvr_to_fws(struct brcmf_pub *drvr)
+{
+ struct brcmf_bcdc *bcdc = drvr->proto->pd;
+
+ return bcdc->fws;
+}
+
static int
brcmf_proto_bcdc_msg(struct brcmf_pub *drvr, int ifidx, uint cmd, void *buf,
uint len, bool set)
@@ -330,8 +338,9 @@ static int brcmf_proto_bcdc_tx_queue_dat
struct sk_buff *skb)
{
struct brcmf_if *ifp = brcmf_get_ifp(drvr, ifidx);
+ struct brcmf_bcdc *bcdc = drvr->proto->pd;
- if (!brcmf_fws_queue_skbs(drvr->fws))
+ if (!brcmf_fws_queue_skbs(bcdc->fws))
return brcmf_proto_txdata(drvr, ifidx, 0, skb);
return brcmf_fws_process_skb(ifp, skb);
@@ -360,15 +369,15 @@ brcmf_proto_bcdc_txcomplete(struct devic
bool success)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
+ struct brcmf_bcdc *bcdc = bus_if->drvr->proto->pd;
struct brcmf_if *ifp;
/* await txstatus signal for firmware if active */
- if (brcmf_fws_fc_active(drvr->fws)) {
+ if (brcmf_fws_fc_active(bcdc->fws)) {
if (!success)
- brcmf_fws_bustxfail(drvr->fws, txp);
+ brcmf_fws_bustxfail(bcdc->fws, txp);
} else {
- if (brcmf_proto_bcdc_hdrpull(drvr, false, txp, &ifp))
+ if (brcmf_proto_bcdc_hdrpull(bus_if->drvr, false, txp, &ifp))
brcmu_pkt_buf_free_skb(txp);
else
brcmf_txfinalize(ifp, txp, success);
@@ -420,7 +429,15 @@ brcmf_proto_bcdc_reset_if(struct brcmf_i
static int
brcmf_proto_bcdc_init_done(struct brcmf_pub *drvr)
{
- return brcmf_fws_attach(drvr);
+ struct brcmf_bcdc *bcdc = drvr->proto->pd;
+ struct brcmf_fws_info *fws;
+
+ fws = brcmf_fws_attach(drvr);
+ if (IS_ERR(fws))
+ return PTR_ERR(fws);
+
+ bcdc->fws = fws;
+ return 0;
}
int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr)
@@ -464,7 +481,9 @@ fail:
void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr)
{
- brcmf_fws_detach(drvr);
- kfree(drvr->proto->pd);
+ struct brcmf_bcdc *bcdc = drvr->proto->pd;
+
drvr->proto->pd = NULL;
+ brcmf_fws_detach(bcdc->fws);
+ kfree(bcdc);
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.h
@@ -22,6 +22,7 @@ void brcmf_proto_bcdc_detach(struct brcm
void brcmf_proto_bcdc_txflowblock(struct device *dev, bool state);
void brcmf_proto_bcdc_txcomplete(struct device *dev, struct sk_buff *txp,
bool success);
+struct brcmf_fws_info *drvr_to_fws(struct brcmf_pub *drvr);
#else
static inline int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr) { return 0; }
static inline void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr) {}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
@@ -127,8 +127,6 @@ struct brcmf_pub {
struct brcmf_fweh_info fweh;
- struct brcmf_fws_info *fws;
-
struct brcmf_ampdu_rx_reorder
*reorder_flows[BRCMF_AMPDU_RX_REORDER_MAXFLOWS];
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
@@ -36,6 +36,7 @@
#include "p2p.h"
#include "cfg80211.h"
#include "proto.h"
+#include "bcdc.h"
#include "common.h"
/**
@@ -1586,7 +1587,7 @@ static int brcmf_fws_notify_credit_map(s
const struct brcmf_event_msg *e,
void *data)
{
- struct brcmf_fws_info *fws = ifp->drvr->fws;
+ struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
int i;
u8 *credits = data;
@@ -1617,7 +1618,7 @@ static int brcmf_fws_notify_bcmc_credit_
const struct brcmf_event_msg *e,
void *data)
{
- struct brcmf_fws_info *fws = ifp->drvr->fws;
+ struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
if (fws) {
brcmf_fws_lock(fws);
@@ -1826,7 +1827,7 @@ netif_rx:
void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb)
{
struct brcmf_skb_reorder_data *rd;
- struct brcmf_fws_info *fws = ifp->drvr->fws;
+ struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
u8 *signal_data;
s16 data_len;
u8 type;
@@ -2091,8 +2092,7 @@ static int brcmf_fws_assign_htod(struct
int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
{
- struct brcmf_pub *drvr = ifp->drvr;
- struct brcmf_fws_info *fws = drvr->fws;
+ struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
struct ethhdr *eh = (struct ethhdr *)(skb->data);
int fifo = BRCMF_FWS_FIFO_BCMC;
@@ -2142,7 +2142,7 @@ void brcmf_fws_reset_interface(struct br
void brcmf_fws_add_interface(struct brcmf_if *ifp)
{
- struct brcmf_fws_info *fws = ifp->drvr->fws;
+ struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
struct brcmf_fws_mac_descriptor *entry;
if (!ifp->ndev || fws->fcmode == BRCMF_FWS_FCMODE_NONE)
@@ -2160,16 +2160,17 @@ void brcmf_fws_add_interface(struct brcm
void brcmf_fws_del_interface(struct brcmf_if *ifp)
{
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
+ struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
if (!entry)
return;
- brcmf_fws_lock(ifp->drvr->fws);
+ brcmf_fws_lock(fws);
ifp->fws_desc = NULL;
brcmf_dbg(TRACE, "deleting %s\n", entry->name);
brcmf_fws_macdesc_deinit(entry);
- brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx);
- brcmf_fws_unlock(ifp->drvr->fws);
+ brcmf_fws_cleanup(fws, ifp->ifidx);
+ brcmf_fws_unlock(fws);
}
static void brcmf_fws_dequeue_worker(struct work_struct *worker)
@@ -2243,7 +2244,7 @@ static void brcmf_fws_dequeue_worker(str
static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data)
{
struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
- struct brcmf_fws_stats *fwstats = &bus_if->drvr->fws->stats;
+ struct brcmf_fws_stats *fwstats = &(drvr_to_fws(bus_if->drvr)->stats);
seq_printf(seq,
"header_pulls: %u\n"
@@ -2308,7 +2309,7 @@ static int brcmf_debugfs_fws_stats_read(
}
#endif
-int brcmf_fws_attach(struct brcmf_pub *drvr)
+struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr)
{
struct brcmf_fws_info *fws;
struct brcmf_if *ifp;
@@ -2316,17 +2317,15 @@ int brcmf_fws_attach(struct brcmf_pub *d
int rc;
u32 mode;
- drvr->fws = kzalloc(sizeof(*(drvr->fws)), GFP_KERNEL);
- if (!drvr->fws) {
+ fws = kzalloc(sizeof(*fws), GFP_KERNEL);
+ if (!fws) {
rc = -ENOMEM;
goto fail;
}
- fws = drvr->fws;
-
spin_lock_init(&fws->spinlock);
- /* set linkage back */
+ /* store drvr reference */
fws->drvr = drvr;
fws->fcmode = drvr->settings->fcmode;
@@ -2334,7 +2333,7 @@ int brcmf_fws_attach(struct brcmf_pub *d
(fws->fcmode == BRCMF_FWS_FCMODE_NONE)) {
fws->avoid_queueing = true;
brcmf_dbg(INFO, "FWS queueing will be avoided\n");
- return 0;
+ return fws;
}
fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq");
@@ -2396,6 +2395,7 @@ int brcmf_fws_attach(struct brcmf_pub *d
brcmf_fws_hanger_init(&fws->hanger);
brcmf_fws_macdesc_init(&fws->desc.other, NULL, 0);
brcmf_fws_macdesc_set_name(fws, &fws->desc.other);
+ brcmf_dbg(INFO, "added %s\n", fws->desc.other.name);
brcmu_pktq_init(&fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT,
BRCMF_FWS_PSQ_LEN);
@@ -2405,27 +2405,24 @@ int brcmf_fws_attach(struct brcmf_pub *d
brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n",
fws->fw_signals ? "enabled" : "disabled", tlv);
- return 0;
+ return fws;
fail:
- brcmf_fws_detach(drvr);
- return rc;
+ brcmf_fws_detach(fws);
+ return ERR_PTR(rc);
}
-void brcmf_fws_detach(struct brcmf_pub *drvr)
+void brcmf_fws_detach(struct brcmf_fws_info *fws)
{
- struct brcmf_fws_info *fws = drvr->fws;
-
if (!fws)
return;
- if (drvr->fws->fws_wq)
- destroy_workqueue(drvr->fws->fws_wq);
+ if (fws->fws_wq)
+ destroy_workqueue(fws->fws_wq);
/* cleanup */
brcmf_fws_lock(fws);
brcmf_fws_cleanup(fws, -1);
- drvr->fws = NULL;
brcmf_fws_unlock(fws);
/* free top structure */
@@ -2461,7 +2458,7 @@ void brcmf_fws_bustxfail(struct brcmf_fw
void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked)
{
- struct brcmf_fws_info *fws = drvr->fws;
+ struct brcmf_fws_info *fws = drvr_to_fws(drvr);
struct brcmf_if *ifp;
int i;
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h
@@ -18,8 +18,8 @@
#ifndef FWSIGNAL_H_
#define FWSIGNAL_H_
-int brcmf_fws_attach(struct brcmf_pub *drvr);
-void brcmf_fws_detach(struct brcmf_pub *drvr);
+struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr);
+void brcmf_fws_detach(struct brcmf_fws_info *fws);
bool brcmf_fws_queue_skbs(struct brcmf_fws_info *fws);
bool brcmf_fws_fc_active(struct brcmf_fws_info *fws);
void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb);
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