Network devices can allocate reasources and private memory using
netdev_ops->ndo_init(). However, the release of these resources
can occur in one of two different places.
Either netdev_ops->ndo_uninit() or netdev->destructor().
The decision of which operation frees the resources depends upon
whether it is necessary for all netdev refs to be released before it
is safe to perform the freeing.
netdev_ops->ndo_uninit() presumably can occur right after the
NETDEV_UNREGISTER notifier completes and the unicast and multicast
address lists are flushed.
netdev->destructor(), on the other hand, does not run until the
netdev references all go away.
Further complicating the situation is that netdev->destructor()
almost universally does also a free_netdev().
This creates a problem for the logic in register_netdevice().
Because all callers of register_netdevice() manage the freeing
of the netdev, and invoke free_netdev(dev) if register_netdevice()
fails.
If netdev_ops->ndo_init() succeeds, but something else fails inside
of register_netdevice(), it does call ndo_ops->ndo_uninit(). But
it is not able to invoke netdev->destructor().
This is because netdev->destructor() will do a free_netdev() and
then the caller of register_netdevice() will do the same.
However, this means that the resources that would normally be released
by netdev->destructor() will not be.
Over the years drivers have added local hacks to deal with this, by
invoking their destructor parts by hand when register_netdevice()
fails.
Many drivers do not try to deal with this, and instead we have leaks.
Let's close this hole by formalizing the distinction between what
private things need to be freed up by netdev->destructor() and whether
the driver needs unregister_netdevice() to perform the free_netdev().
netdev->priv_destructor() performs all actions to free up the private
resources that used to be freed by netdev->destructor(), except for
free_netdev().
netdev->needs_free_netdev is a boolean that indicates whether
free_netdev() should be done at the end of unregister_netdevice().
Now, register_netdevice() can sanely release all resources after
ndo_ops->ndo_init() succeeds, by invoking both ndo_ops->ndo_uninit()
and netdev->priv_destructor().
And at the end of unregister_netdevice(), we invoke
netdev->priv_destructor() and optionally call free_netdev().
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace a couple of function names embedded in trace messages
with __func__. One of them had a typo anyway.
Signed-off-by: Ian Chard <ian@chard.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "len" could be as low as -14 so we should check for negatives.
Fixes: 9a7fe54ddc ("staging: r8188eu: Add source files for new driver - part 1")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changed the type of wpa_ie_len from (int *) to (unsigned int *) in the
function rtw_get_wpa_ie(..) to suppress signedness mismatch warnings in
rtw_generate_ie of the type-
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:1009:60: warning: incorrect
type in argument 2 (different signedness)
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:1009:60: expected int
*wpa_ie_len
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:1009:60: got unsigned
int *<noident>
Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changed the type of sz from (int) to (unsigned int) to suppress
signedness mismatch warnings of the type-
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:258:97: warning:
incorrect type in argument 5 (different signedness)
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:258:97: expected
unsigned int [usertype] *frlen
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:258:97: got int
*<noident>
Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changed the type of len from (int *) to (unsigned int *) in the
function rtw_get_ie(..) and wherever this function is called to
suppress signedness mismatch warnings of the type-
drivers/staging/rtl8188eu//core/rtw_ap.c:78:60: warning: incorrect type
in argument 3 (different signedness)
drivers/staging/rtl8188eu//core/rtw_ap.c:78:60: expected int *len
drivers/staging/rtl8188eu//core/rtw_ap.c:78:60: got unsigned int
*<noident>
Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The rtl8188eu driver defines a ton of global symbols which tend to
conflict with other realtek wifi drivers, force it to be built as
a module.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Value of this variable does not changed after initialization.
Replace software_encrypt with its default value.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_software_encrypt used only once and does not changed.
Replace it with 0.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sw_decrypt always is 0, so replace it with 0.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Value of this variable has no changes, and used once.
Replace software_decrypt with its value.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_software_decrypt used only once and does not changed.
Replace it with 0.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Coding style problem detected by checkpatch.pl
ERROR: space prohibited before that ','
Signed-off-by: Alfonso Lima Astor <alfonsolimaastor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This macro is not used and also had a style error. I have run
grep and compiled the module to be sure.
Signed-off-by: Alfonso Lima Astor <alfonsolimaastor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If this frame contains IV/ICV fields, ether_type field located a little farther.
This bug already fixed here:
https://github.com/lwfinger/rtl8188eu/blob/master/core/rtw_recv.c#L569 .
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We converted these conditions from == NULL and != NULL but messed up
and inverted some.
Fixes: e31447f934 ("staging: rtl8188eu: Replace x==NULL by !x")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add spaces around binary operator '&' in order to
increase the readability of the code.
Signed-off-by: Georgiana Rodica Chelu <georgiana.chelu93@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a blank line after function declaration to fix the
checkpatch issue Please use a blank line after
function/struct/union/enum declarations.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove unnecessary blank lines to fix the checkpatch issue,
blank lines are not required before '}'.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Constants should be on the right side of comparisons.
Issue found by checkpatch.pl script.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Align * on each line and move final */ to a new line, to
conform to the kernel coding style for block comments.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace x==NULL by !x, to fix the checkpatch issue
comparsion with NULL could be written as !x.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
MCS_rate_2R[] does not used. Remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg() does not used with HW_VAR_RF_TYPE parameter.
Remove HW_VAR_RF_TYPE switch case in rtw_hal_get_hwreg and definition.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value and refactor HT_caps_handler().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value and refactor rtw_update_ht_cap().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value and refactor issue_assocreq().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value
and refactor rtw_get_cur_max_rate().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value
and refactor rtw_check_beacon_data().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_hal_get_hwreg(..., HW_VAR_RF_TYPE,...) always return RF_1T1R value.
Replace the function call with RF_1T1R value and refactor add_RATid().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
DIV_ROUND_UP macro is shorter and look better than if-else construction.
DIV_ROUND_UP used in rtw_signal_stat_timer_hdl().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We are going to split <linux/sched/signal.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.
Create a trivial placeholder <linux/sched/signal.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.
Include the new header in the files that are going to need it.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
recv_frame->rx_(data|len|tail) duplicate pkt (skb) data|len|tail members
and require special functions recvframe_(put|pull|pull_tail)()
instead of skb_(put|pull|trim).
Replace rx_(data|len|tail) with pkt->(data|len|tail),
remove rx_(data|len|tail) and remove recvframe_(put|pull|pull_tail)().
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Original driver code uses rx_* members to store skb (pkt) fields
(instead of pkt->* members), pkt->* updated only after data
completely formed, not in process.
Update pkt->* after data buffer changed (with rx_*).
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_ieee80211_bar structure definition does not used. Remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rx_end is duplication of pkt->end pointer.
pkt->end is preferred, because it is native skb field
supported by skb_*() functions.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is checkpatch fix for hal/bb_cfg.c file:
remove not necessary braces {}
Signed-off-by: Martin Karamihov <martinowar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixed comparison, moved the constant to the right side of the test
Found using checkpatch
Signed-off-by: Derek Robson <robsonde@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
vfree frees the virtually continuous block of memory beginning at
addr. If addr is NULL, no operation is performed. So, NULL test is not
needed before vfree().
Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
len was declared unsigned int where we use an int
Fix sparse (-Wtypesign) issues:
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1081:88: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1081:88: expected int *len
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1081:88: got unsigned int *<noident>
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1091:86: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1091:86: expected int *len
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1091:86: got unsigned int *<noident>
Signed-off-by: Pierre-Yves Kerbrat <pkerbrat@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David S. Miller