Re: [dpdk-dev] [PATCH] drivers/net: do not redefine bool

[Thomas Monjalon <thomas@monjalon.net>]

21/09/2018 15:47, Ferruh Yigit:
> On 9/20/2018 1:18 AM, Thomas Monjalon wrote:
> > When trying to include stdbool.h in DPDK base headers, there are a lot
> > of conflicts with drivers which redefine bool/true/false
> > in their compatibility layer.
> > 
> > It is fixed by including stdbool.h in these drivers.
> > Some errors with usage of bool type are also fixed in some drivers.
> > 
> > Note: the driver qede has a surprising mix of bool and int:
> > 	(~p_iov->b_pre_fp_hsi & ETH_HSI_VER_MINOR)
> > where the first variable is boolean and the version is a number.
> > It is replaced by
> > 	!p_iov->b_pre_fp_hsi
> > 
> > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> > ---
> >  drivers/net/cxgbe/cxgbe_compat.h         |  2 +-
> >  drivers/net/e1000/base/e1000_osdep.h     |  5 +----
> >  drivers/net/fm10k/base/fm10k_osdep.h     |  8 +-------
> >  drivers/net/fm10k/fm10k_ethdev.c         |  4 ++--
> >  drivers/net/ixgbe/base/ixgbe_osdep.h     |  6 +-----
> >  drivers/net/ixgbe/ixgbe_ethdev.c         | 16 +++++++++-------
> >  drivers/net/ixgbe/ixgbe_rxtx.c           |  2 +-
> >  drivers/net/qede/base/bcm_osal.h         |  6 ++----
> >  drivers/net/qede/base/ecore_vf.c         |  3 +--
> >  drivers/net/qede/qede_ethdev.c           |  2 +-
> >  drivers/net/vmxnet3/base/vmxnet3_osdep.h |  3 ++-
> >  11 files changed, 22 insertions(+), 35 deletions(-)
> 
> <...>
> 
> > @@ -35,6 +35,7 @@
> >  #ifndef _E1000_OSDEP_H_
> >  #define _E1000_OSDEP_H_
> >  
> > +#include <stdbool.h>
> >  #include <stdint.h>
> >  #include <stdio.h>
> >  #include <stdarg.h>
> > @@ -87,7 +88,6 @@ typedef int64_t		s64;
> >  typedef int32_t		s32;
> >  typedef int16_t		s16;
> >  typedef int8_t		s8;
> > -typedef int		bool;
> >  
> >  #define __le16		u16
> >  #define __le32		u32
> > @@ -192,7 +192,4 @@ static inline uint16_t e1000_read_addr16(volatile void *addr)
> >  #define ETH_ADDR_LEN                  6
> >  #endif
> >  
> > -#define false                         FALSE
> > -#define true                          TRUE
> > -
> 
> It is too much hassle to update Intel base driver code.

It is not really base driver code.
It was agreed that *_osdep.h can be modified:
	http://git.dpdk.org/dpdk/tree/drivers/net/ixgbe/base/README#n56

> What would happen if not
> include stdbool and keep define for base code updates? Will it break build for
> applications?

The problem is not applications, but using stdbool in DPDK headers.