Re: libibumad: added link_layer for RoCEE support and updated umad version

[Sasha Khapyorsky <sashak-smomgflXvOZWk0Htik3J/w@public.gmane.org>]

On 12:39 Tue 09 Mar     , Yevgeny Kliteynik wrote:
> Added link_layer field to umad_port_t.
> The field is implemented as char[].
> If the relevant file doesn't exist in sysfs, the link layer
> is "IB". Otherwise, the content of link_layer file is used.
> 
> The libibumad version is promoted.
> 
> Signed-off-by: Yevgeny Kliteynik <kliteyn-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>

Applied but see below. Thanks.

> ---
>  libibumad/include/infiniband/umad.h |    2 ++
>  libibumad/libibumad.ver             |    2 +-
>  libibumad/src/umad.c                |    5 +++++
>  3 files changed, 8 insertions(+), 1 deletions(-)
> 
> diff --git a/libibumad/include/infiniband/umad.h b/libibumad/include/infiniband/umad.h
> index 1f82183..f9da204 100644
> --- a/libibumad/include/infiniband/umad.h
> +++ b/libibumad/include/infiniband/umad.h
> @@ -116,6 +116,7 @@ typedef struct ib_user_mad {
>  #define SYS_PORT_RATE		"rate"
>  #define SYS_PORT_GUID		"port_guid"
>  #define SYS_PORT_GID		"gids/0"
> +#define SYS_PORT_LINK_LAYER	"link_layer"
> 
>  typedef struct umad_port {
>  	char ca_name[UMAD_CA_NAME_LEN];
> @@ -132,6 +133,7 @@ typedef struct umad_port {
>  	uint64_t port_guid;
>  	unsigned pkeys_size;
>  	uint16_t *pkeys;
> +	char link_layer[UMAD_CA_NAME_LEN];
>  } umad_port_t;
> 
>  typedef struct umad_ca {
> diff --git a/libibumad/libibumad.ver b/libibumad/libibumad.ver
> index 57cddbd..225738c 100644
> --- a/libibumad/libibumad.ver
> +++ b/libibumad/libibumad.ver
> @@ -6,4 +6,4 @@
>  # API_REV - advance on any added API
>  # RUNNING_REV - advance any change to the vendor files
>  # AGE - number of backward versions the API still supports
> -LIBVERSION=2:1:0
> +LIBVERSION=2:2:0

This patch actually breaks ABI (mostly for umad_port_t users - see for
example update_umad_port() in opensm/libvendor/osm_vendor_ibumad_sa.c).
So it looks that API_REV should be advanced as well.

I will do this before next release.

Sasha

> diff --git a/libibumad/src/umad.c b/libibumad/src/umad.c
> index 277ae6b..d16e750 100644
> --- a/libibumad/src/umad.c
> +++ b/libibumad/src/umad.c
> @@ -159,6 +159,11 @@ static int get_port(char *ca_name, char *dir, int portnum, umad_port_t * port)
>  	if (sys_read_uint(port_dir, SYS_PORT_CAPMASK, &port->capmask) < 0)
>  		goto clean;
> 
> +	if (sys_read_string(port_dir, SYS_PORT_LINK_LAYER,
> +	    port->link_layer, UMAD_CA_NAME_LEN) < 0)
> +		/* assume IB by default */
> +		sprintf(port->link_layer, "IB");
> +
>  	port->capmask = htonl(port->capmask);
> 
>  	if (sys_read_gid(port_dir, SYS_PORT_GID, gid) < 0)
> -- 
> 1.5.1.4
> 
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