[dpdk-dev] [PATCH] kni: fix compile errors on Oracle Linux6.4 and RHEL6.5

[Zhang, Helin]

Hi Thomas

Were you talking about the "#ifndef ether_addr_equal "?
The compile errors I copied in that patch shows that the function has already been defined in include/linux/etherdevice.h on Oracle Linux6.4. In this case, it seems not always true as you said.
The method came from the standard Linux driver, so I think it should be useful and has been reviewed by Linux kernel community.

Oops, it seems that there are useless code which I need to remove. I will update it later! Thank you very much for the pointing!

Regards,
Helin

-----Original Message-----
From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com] 
Sent: Tuesday, June 10, 2014 6:03 PM
To: Zhang, Helin
Cc: dev at dpdk.org
Subject: Re: [dpdk-dev] [PATCH] kni: fix compile errors on Oracle Linux6.4 and RHEL6.5

Hi Helin,

2014-06-09 16:38, Helin Zhang:
>  #if ( LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0) )  #define 
> skb_tx_timestamp(skb) do {} while (0) -#if !(RHEL_RELEASE_CODE && 
> RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(6,4)) -static inline bool 
> ether_addr_equal(const u8 *addr1, const u8 *addr2)
> +#ifndef ether_addr_equal

It should be always true as it is a function (not known by the preprocessor).

> +static inline bool __kc_ether_addr_equal(const u8 *addr1, const u8 
> +*addr2)
>  {
>  	return !compare_ether_addr(addr1, addr2);  } -#endif
> +#define ether_addr_equal(_addr1, _addr2) 
> +__kc_ether_addr_equal((_addr1),(_addr2))
> +#endif /* __kc_ether_addr_equal*/

So it is always replacing ether_addr_equal() by a kcompat equivalent for old kernels, even if ether_addr_equal() is already defined as a C function.
Just to confirm: is it really what we want?

[...]
> -#endif
> +#define ethtool_adv_to_mmd_eee_adv_t(adv) \
> +__kc_ethtool_adv_to_mmd_eee_adv_t(adv)

An indentation is missing here.

> +#endif /* ethtool_adv_to_mmd_eee_adv_t */ #endif /* */

Why an empty comment?

Thanks
--
Thomas