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From: Thomas Monjalon <thomas@monjalon.net>
To: David Marchand <david.marchand@redhat.com>
Cc: dev@dpdk.org, Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Ray Kinsella <mdr@ashroe.eu>, Neil Horman <nhorman@tuxdriver.com>,
	Olivier Matz <olivier.matz@6wind.com>
Subject: Re: [dpdk-dev] [PATCH v2 9/9] mbuf: remove seqn field
Date: Sat, 31 Oct 2020 22:09:37 +0100
Message-ID: <11710466.Nu2QobosFU@thomas> (raw)
In-Reply-To: <20201028122013.31104-10-david.marchand@redhat.com>

28/10/2020 13:20, David Marchand:
> As announced in the deprecation note, the field seqn is removed to give
> more space to the dynamic fields.
> 
> This is how the mbuf layout looks like (pahole-style):
> 
> word  type                              name                byte  size
>  0    void *                            buf_addr;         /*   0 +  8 */
>  1    rte_iova_t                        buf_iova          /*   8 +  8 */
>       /* --- RTE_MARKER64               rearm_data;                   */
>  2    uint16_t                          data_off;         /*  16 +  2 */
>       uint16_t                          refcnt;           /*  18 +  2 */
>       uint16_t                          nb_segs;          /*  20 +  2 */
>       uint16_t                          port;             /*  22 +  2 */
>  3    uint64_t                          ol_flags;         /*  24 +  8 */
>       /* --- RTE_MARKER                 rx_descriptor_fields1;        */
>  4    uint32_t             union        packet_type;      /*  32 +  4 */
>       uint32_t                          pkt_len;          /*  36 +  4 */
>  5    uint16_t                          data_len;         /*  40 +  2 */
>       uint16_t                          vlan_tci;         /*  42 +  2 */
>  5.5  uint64_t             union        hash;             /*  44 +  8 */
>  6.5  uint16_t                          vlan_tci_outer;   /*  52 +  2 */
>       uint16_t                          buf_len;          /*  54 +  2 */
>  7    uint64_t                          timestamp;        /*  56 +  8 */
>       /* --- RTE_MARKER                 cacheline1;                   */
>  8    struct rte_mempool *              pool;             /*  64 +  8 */
>  9    struct rte_mbuf *                 next;             /*  72 +  8 */
> 10    uint64_t             union        tx_offload;       /*  80 +  8 */
> 11    struct rte_mbuf_ext_shared_info * shinfo;           /*  88 +  8 */
> 12    uint16_t                          priv_size;        /*  96 +  2 */
>       uint16_t                          timesync;         /*  98 +  2 */
> 12.5  uint32_t                          dynfield1[7];     /* 100 + 28 */
> 16    /* --- END                                             128      */
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

Acked-by: Thomas Monjalon <thomas@monjalon.net>



  reply	other threads:[~2020-10-31 21:09 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-27 22:13 [dpdk-dev] [PATCH 0/8] remove mbuf seqn David Marchand
2020-10-27 22:13 ` [dpdk-dev] [PATCH 1/8] event/dpaa2: remove dead code David Marchand
2020-10-27 22:13 ` [dpdk-dev] [PATCH 2/8] crypto/scheduler: remove unused internal seqn David Marchand
2020-10-27 22:13 ` [dpdk-dev] [PATCH 3/8] net/ark: remove use of seqn for debug David Marchand
2020-10-28 12:19   ` Ed Czeck
2020-10-27 22:13 ` [dpdk-dev] [PATCH 4/8] reorder: switch sequence number to dynamic mbuf field David Marchand
2020-10-27 22:13 ` [dpdk-dev] [PATCH 5/8] dpaa: switch sequence number to dynamic field David Marchand
2020-10-27 22:13 ` [dpdk-dev] [PATCH 6/8] fslmc: " David Marchand
2020-10-27 22:13 ` [dpdk-dev] [PATCH 7/8] event: " David Marchand
2020-10-27 22:18   ` David Marchand
2020-10-28  7:27   ` Jerin Jacob
2020-10-28  8:55     ` David Marchand
2020-10-28  9:09       ` Jerin Jacob
2020-10-27 22:13 ` [dpdk-dev] [PATCH 8/8] mbuf: remove seqn field David Marchand
2020-10-28 10:27   ` Andrew Rybchenko
2020-10-28 12:20 ` [dpdk-dev] [PATCH v2 0/9] remove mbuf seqn David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 1/9] event/dpaa2: remove dead code David Marchand
2020-10-31 18:28     ` Nipun Gupta
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 2/9] crypto/scheduler: remove unused internal seqn David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 3/9] net/ark: remove use of seqn for debug David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 4/9] reorder: switch sequence number to dynamic mbuf field David Marchand
2020-10-28 12:54     ` Andrew Rybchenko
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 5/9] dpaa: " David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 6/9] fslmc: " David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 7/9] eventdev: " David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 8/9] app/eventdev: " David Marchand
2020-10-28 12:20   ` [dpdk-dev] [PATCH v2 9/9] mbuf: remove seqn field David Marchand
2020-10-31 21:09     ` Thomas Monjalon [this message]
2020-10-31 21:11   ` [dpdk-dev] [PATCH v2 0/9] remove mbuf seqn Thomas Monjalon

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