From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [PATCH v3 18/29] net/cxgbe: use eal I/O device
 memory read/write API
Date: Thu, 12 Jan 2017 19:12:33 +0000
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 <1484212646-10338-1-git-send-email-jerin.jacob@caviumnetworks.com>
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Cc: konstantin.ananyev@intel.com, thomas.monjalon@6wind.com,
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 Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
To: Jerin Jacob <jerin.jacob@caviumnetworks.com>, dev@dpdk.org
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On 1/12/2017 9:17 AM, Jerin Jacob wrote:
<...>

>  
> -#define CXGBE_PCI_REG_WRITE(reg, value) ({ \
> -	CXGBE_PCI_REG((reg)) = (value); })
> +#define CXGBE_PCI_REG_WRITE(reg, value) rte_write32((value), (reg))

Almost all (if not all) PMD write macros' argument order is like
write(address, value), but rte_writeX has rte_writex(value, address)

What is the common usage for this kind of function?
What do you think reverting argument order?

As a similar example, dpdk ether_addr_copy(src, dst) function argument
order is revers according common usage, and keeps confusing people.

<...>