Re: [dpdk-stable] [PATCH] drivers/crypto/dpaa_sec: update DPAA iova table in dpaa_mem_vtop

[Hemant Agrawal <hemant.agrawal@nxp.com>]

Hi Thierry,

> -----Original Message-----
> From: Thierry Herbelot <thierry.herbelot@6wind.com>
> Sent: Wednesday, September 11, 2019 9:37 PM
> To: dev@dpdk.org
> Cc: Thomas Monjalon <thomas@monjalon.net>; stable@dpdk.org; Akhil
> Goyal <akhil.goyal@nxp.com>; Hemant Agrawal
> <hemant.agrawal@nxp.com>
> Subject: [PATCH] drivers/crypto/dpaa_sec: update DPAA iova table in
> dpaa_mem_vtop
> Importance: High
> 
> dpaa_sec needs translations between physical and virtual addresses.
> V to P translation is relatively fast, as memory is managed in contiguous
> segments.
> 
> The result of each V to P translation is used to update the DPAA iova table,
> which should be updated by a Mem event callback, but is not.
> Then the DPAA iova table has entries for all needed memory ranges.
> 
> With this patch, dpaa_mem_ptov will always use dpaax_iova_table_get_va,
> which ensures optimal performance.
> 
> Fixes: 5a7dbb934d75 ('dpaa: enable dpaax library')
> Cc: stable@dpdk.org
> Cc: akhil.goyal@nxp.com
> Cc: hemant.agrawal@nxp.com
> 
> Signed-off-by: Thierry Herbelot <thierry.herbelot@6wind.com>
> ---
>  drivers/crypto/dpaa_sec/dpaa_sec.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/dpaa_sec/dpaa_sec.c
> b/drivers/crypto/dpaa_sec/dpaa_sec.c
> index 122c80a072ff..22b8b1d63ce0 100644
> --- a/drivers/crypto/dpaa_sec/dpaa_sec.c
> +++ b/drivers/crypto/dpaa_sec/dpaa_sec.c
> @@ -38,6 +38,7 @@
>  #include <rte_dpaa_bus.h>
>  #include <dpaa_sec.h>
>  #include <dpaa_sec_log.h>
> +#include <dpaax_iova_table.h>
> 
>  enum rta_sec_era rta_sec_era;
> 
> @@ -100,8 +101,10 @@ dpaa_mem_vtop(void *vaddr)
>  	const struct rte_memseg *ms;
> 
>  	ms = rte_mem_virt2memseg(vaddr, NULL);
> -	if (ms)
> +	if (ms) {
> +		dpaax_iova_table_update(ms->iova, (void *)ms->addr_64,
> ms->len);
[Hemant] This fails 32bit (i686) compilation 
You can use "ms->addr" instead of  "(void *)ms->addr_64"

>  		return ms->iova + RTE_PTR_DIFF(vaddr, ms->addr);
> +	}
>  	return (size_t)NULL;
>  }
> 
> --
> 2.20.1