[dpdk-dev] [PATCH v3] kni: fix compilation issue in KNI vhost on kernel 3.19/4.0

[Thomas Monjalon]

> Due to commit c0371da6 in kernel 3.19, which removed msg_iov
> and msg_iovlen from struct msghdr, DPDK would not build.
> Also, functions memcpy_toiovecend and memcpy_fromiovecend
> were removed in commits ba7438ae and 57dd8a07, being substituted by
> copy_from_iter and copy_to_iter.
> 
> This patch makes use of struct iov_iter, which has references
> to msg_iov and msg_iovln, and makes use of copy_from_iter
> and copy_to_iter.
> 
> Changes in v2:
> - Replaced functions memcpy_toiovecend and memcpy_fromiovecend
>   with copy_from_iter and copy_to_iter
> 
> Changes in v3:
> - Fixed variable names
> - Add missing checks
> 
> Reported-by: Thomas Monjalon <thomas.monjalon at 6wind.com>
> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>

Applied, thanks