network/broadcom-sta: Updated for recent kernels.

Signed-off-by: Dave Woodfall <dave@slackbuilds.org>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

2 files changed, 208 insertions, 0 deletions

diff --git a/network/broadcom-sta/broadcom-sta.SlackBuild b/network/broadcom-sta/broadcom-sta.SlackBuild
index c4b3026d8c..e1258bdbad 100644
--- a/network/broadcom-sta/broadcom-sta.SlackBuild
+++ b/network/broadcom-sta/broadcom-sta.SlackBuild
@@ -87,6 +87,7 @@ patch -p2 < $CWD/patches/20-linux414.patch
 patch -p2 < $CWD/patches/21-linux415.patch
 patch -p2 < $CWD/patches/22-linux56.patch
 patch -p1 < $CWD/patches/009-fix_mac_profile_discrepancy.patch
+patch -p2 < $CWD/patches/23-get-rid-of-get_fs-set_fs-calls.patch
 
 # See https://lkml.org/lkml/2019/3/1/643
 sed -i 's/get_ds()/KERNEL_DS/g' src/wl/sys/wl_iw.c
diff --git a/network/broadcom-sta/patches/23-get-rid-of-get_fs-set_fs-calls.patch b/network/broadcom-sta/patches/23-get-rid-of-get_fs-set_fs-calls.patch
new file mode 100644
index 0000000000..b7ba8cdbf5
--- /dev/null
+++ b/network/broadcom-sta/patches/23-get-rid-of-get_fs-set_fs-calls.patch
@@ -0,0 +1,207 @@
+From: Joan Bruguera <joanbrugueram@gmail.com>
+Date: Sun, 13 Sep 2020 07:33:32 +0200
+Subject: Get rid of get_fs/set_fs calls in Broadcom WL driver.
+Origin: https://gist.github.com/joanbm/5c640ac074d27fd1d82c74a5b67a1290
+
+Fixes linux-next where get_fs/set_fs is already removed for some architectures.
+
+NB: Some checks in wlc_ioctl_internal are likely superfluous,
+    but I'm not familiar enough with the driver to remove them with confidence.
+
+See also: https://lwn.net/Articles/722267/
+          https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/arch/x86/include/asm/uaccess.h?h=next-20200911&id=47058bb54b57962b3958a936ddbc59355e4c5504
+          https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/include/linux/uaccess.h?h=next-20200911&id=5e6e9852d6f76e01b2e6803c74258afa5b432bc5
+
+Signed-off-by: Joan Bruguera <joanbrugueram@gmail.com>
+---
+ amd64/src/wl/sys/wl_cfg80211_hybrid.c | 29 ++-----------------------
+ amd64/src/wl/sys/wl_iw.c              | 25 ++--------------------
+ amd64/src/wl/sys/wl_linux.c           | 40 ++++++++++++++++++++++++++++++-----
+ amd64/src/wl/sys/wl_linux.h           |  2 ++
+ amd64/src/wl/sys/wlc_pub.h            |  1 +
+ 5 files changed, 42 insertions(+), 55 deletions(-)
+
+diff --git a/amd64/src/wl/sys/wl_cfg80211_hybrid.c b/amd64/src/wl/sys/wl_cfg80211_hybrid.c
+index 8e01841..111ec5a 100644
+--- a/amd64/src/wl/sys/wl_cfg80211_hybrid.c
++++ b/amd64/src/wl/sys/wl_cfg80211_hybrid.c
+@@ -41,6 +41,7 @@
+ #include <wlioctl.h>
+ #include <proto/802.11.h>
+ #include <wl_cfg80211_hybrid.h>
++#include <wl_linux.h>
+ 
+ #define EVENT_TYPE(e) dtoh32((e)->event_type)
+ #define EVENT_FLAGS(e) dtoh16((e)->flags)
+@@ -442,30 +443,8 @@
+ static s32
+ wl_dev_ioctl(struct net_device *dev, u32 cmd, void *arg, u32 len)
+ {
+-	struct ifreq ifr;
+-	struct wl_ioctl ioc;
+-	mm_segment_t fs;
+-	s32 err = 0;
+-
+ 	BUG_ON(len < sizeof(int));
+-
+-	memset(&ioc, 0, sizeof(ioc));
+-	ioc.cmd = cmd;
+-	ioc.buf = arg;
+-	ioc.len = len;
+-	strcpy(ifr.ifr_name, dev->name);
+-	ifr.ifr_data = (caddr_t)&ioc;
+-
+-	fs = get_fs();
+-	set_fs(get_ds());
+-#if defined(WL_USE_NETDEV_OPS)
+-	err = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, SIOCDEVPRIVATE);
+-#else
+-	err = dev->do_ioctl(dev, &ifr, SIOCDEVPRIVATE);
+-#endif
+-	set_fs(fs);
+-
+-	return err;
++	return wlc_ioctl_internal(dev, cmd, arg, len);
+ }
+ 
+ static s32
+diff --git a/amd64/src/wl/sys/wl_iw.c b/amd64/src/wl/sys/wl_iw.c
+index c4c610b..e346b15 100644
+--- a/amd64/src/wl/sys/wl_iw.c
++++ b/amd64/src/wl/sys/wl_iw.c
+@@ -37,6 +37,7 @@ typedef const struct si_pub	si_t;
+ 
+ #include <wl_dbg.h>
+ #include <wl_iw.h>
++#include <wl_linux.h>
+ 
+ extern bool wl_iw_conn_status_str(uint32 event_type, uint32 status,
+ 	uint32 reason, char* stringBuf, uint buflen);
+@@ -103,29 +104,7 @@ dev_wlc_ioctl(
+ 	int len
+ )
+ {
+-	struct ifreq ifr;
+-	wl_ioctl_t ioc;
+-	mm_segment_t fs;
+-	int ret;
+-
+-	memset(&ioc, 0, sizeof(ioc));
+-	ioc.cmd = cmd;
+-	ioc.buf = arg;
+-	ioc.len = len;
+-
+-	strcpy(ifr.ifr_name, dev->name);
+-	ifr.ifr_data = (caddr_t) &ioc;
+-
+-	fs = get_fs();
+-	set_fs(get_ds());
+-#if defined(WL_USE_NETDEV_OPS)
+-	ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, SIOCDEVPRIVATE);
+-#else
+-	ret = dev->do_ioctl(dev, &ifr, SIOCDEVPRIVATE);
+-#endif
+-	set_fs(fs);
+-
+-	return ret;
++	return wlc_ioctl_internal(dev, cmd, arg, len);
+ }
+ 
+ static int
+diff --git a/amd64/src/wl/sys/wl_linux.c b/amd64/src/wl/sys/wl_linux.c
+index 66069d4..cc01d2b 100644
+--- a/amd64/src/wl/sys/wl_linux.c
++++ b/amd64/src/wl/sys/wl_linux.c
+@@ -1661,10 +1661,7 @@ wl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+ 		goto done2;
+ 	}
+ 
+-	if (segment_eq(get_fs(), KERNEL_DS))
+-		buf = ioc.buf;
+-
+-	else if (ioc.buf) {
++	if (ioc.buf) {
+ 		if (!(buf = (void *) MALLOC(wl->osh, MAX(ioc.len, WLC_IOCTL_MAXLEN)))) {
+ 			bcmerror = BCME_NORESOURCE;
+ 			goto done2;
+@@ -1681,7 +1678,7 @@ wl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+ 	WL_UNLOCK(wl);
+ 
+ done1:
+-	if (ioc.buf && (ioc.buf != buf)) {
++	if (ioc.buf) {
+ 		if (copy_to_user(ioc.buf, buf, ioc.len))
+ 			bcmerror = BCME_BADADDR;
+ 		MFREE(wl->osh, buf, MAX(ioc.len, WLC_IOCTL_MAXLEN));
+@@ -1694,6 +1691,39 @@ done2:
+ 	return (OSL_ERROR(bcmerror));
+ }
+ 
++int
++wlc_ioctl_internal(struct net_device *dev, int cmd, void *buf, int len)
++{
++	wl_info_t *wl;
++	wl_if_t *wlif;
++	int bcmerror;
++
++	if (!dev)
++		return -ENETDOWN;
++
++	wl = WL_INFO(dev);
++	wlif = WL_DEV_IF(dev);
++	if (wlif == NULL || wl == NULL || wl->dev == NULL)
++		return -ENETDOWN;
++
++	bcmerror = 0;
++
++	WL_TRACE(("wl%d: wlc_ioctl_internal: cmd 0x%x\n", wl->pub->unit, cmd));
++
++	WL_LOCK(wl);
++	if (!capable(CAP_NET_ADMIN)) {
++		bcmerror = BCME_EPERM;
++	} else {
++		bcmerror = wlc_ioctl(wl->wlc, cmd, buf, len, wlif->wlcif);
++	}
++	WL_UNLOCK(wl);
++
++	ASSERT(VALID_BCMERROR(bcmerror));
++	if (bcmerror != 0)
++		wl->pub->bcmerror = bcmerror;
++	return (OSL_ERROR(bcmerror));
++}
++
+ static struct net_device_stats*
+ wl_get_stats(struct net_device *dev)
+ {
+diff --git a/amd64/src/wl/sys/wl_linux.h b/amd64/src/wl/sys/wl_linux.h
+index 5b1048e..c8c1f41 100644
+--- a/amd64/src/wl/sys/wl_linux.h
++++ b/amd64/src/wl/sys/wl_linux.h
+@@ -22,6 +22,7 @@
+ #define _wl_linux_h_
+ 
+ #include <wlc_types.h>
++#include <wlc_pub.h>
+ 
+ typedef struct wl_timer {
+ 	struct timer_list 	timer;
+@@ -187,6 +188,7 @@ extern irqreturn_t wl_isr(int irq, void *dev_id, struct pt_regs *ptregs);
+ extern int __devinit wl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+ extern void wl_free(wl_info_t *wl);
+ extern int  wl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
++extern int wlc_ioctl_internal(struct net_device *dev, int cmd, void *buf, int len);
+ extern struct net_device * wl_netdev_get(wl_info_t *wl);
+ 
+ #endif 
+diff --git a/amd64/src/wl/sys/wlc_pub.h b/amd64/src/wl/sys/wlc_pub.h
+index 53a98b8..2b5a029 100644
+--- a/amd64/src/wl/sys/wlc_pub.h
++++ b/amd64/src/wl/sys/wlc_pub.h
+@@ -24,6 +24,7 @@
+ 
+ #include <wlc_types.h>
+ #include <wlc_utils.h>
++#include <siutils.h>
+ #include "proto/802.11.h"
+ #include "proto/bcmevent.h"
+