[dpdk-dev] [PATCH v2] librte_mbuf: modify port initialization value

[Zhang, Helin]

> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Zhiyong Yang
> Sent: Tuesday, September 5, 2017 1:13 PM
> To: dev at dpdk.org
> Cc: thomas at monjalon.net; Yigit, Ferruh; stephen at networkplumber.org; Yang,
> Zhiyong
> Subject: [dpdk-dev] [PATCH v2] librte_mbuf: modify port initialization value
> 
> In order to support more than 256 virtual ports, the field "port"
> in rte_mbuf has been increased to 16 bits. The initialization/reset value of the
> field "port" should be changed from 0xff to 0xffff accordingly.
> 
> Signed-off-by: Zhiyong Yang <zhiyong.yang at intel.com>
> ---
> 
> Changes in V2:
> Introduce MBUF_INVALID_PORT as a constant.
> 
>  lib/librte_mbuf/rte_mbuf.c | 2 +-
>  lib/librte_mbuf/rte_mbuf.h | 4 +++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c index
> 26a62b8e1..bcf4e2fcf 100644
> --- a/lib/librte_mbuf/rte_mbuf.c
> +++ b/lib/librte_mbuf/rte_mbuf.c
> @@ -144,7 +144,7 @@ rte_pktmbuf_init(struct rte_mempool *mp,
>  	/* init some constant fields */
>  	m->pool = mp;
>  	m->nb_segs = 1;
> -	m->port = 0xff;
> +	m->port = MBUF_INVALID_PORT;
>  	rte_mbuf_refcnt_set(m, 1);
>  	m->next = NULL;
>  }
> diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index
> eaed7eee0..e32038a73 100644
> --- a/lib/librte_mbuf/rte_mbuf.h
> +++ b/lib/librte_mbuf/rte_mbuf.h
> @@ -1087,6 +1087,8 @@ static inline void
> rte_pktmbuf_reset_headroom(struct rte_mbuf *m)
>   * @param m
>   *   The packet mbuf to be resetted.
>   */
> +#define MBUF_INVALID_PORT 0xffff
Replaced with below, or use UINT16_MAX directly?
#define MBUF_INVALID_PORT UINT16_MAX

> +
>  static inline void rte_pktmbuf_reset(struct rte_mbuf *m)  {
>  	m->next = NULL;
> @@ -1095,7 +1097,7 @@ static inline void rte_pktmbuf_reset(struct rte_mbuf
> *m)
>  	m->vlan_tci = 0;
>  	m->vlan_tci_outer = 0;
>  	m->nb_segs = 1;
> -	m->port = 0xff;
> +	m->port = MBUF_INVALID_PORT;
> 
>  	m->ol_flags = 0;
>  	m->packet_type = 0;
> --
> 2.13.3