Re: [dpdk-dev] [PATCH v4 00/12] mbuf: enhancements of mbuf clones

[Neil Horman <nhorman@tuxdriver.com>]

On Mon, Apr 20, 2015 at 05:41:24PM +0200, Olivier Matz wrote:
> The first objective of this series is to fix the support of indirect
> mbufs when the application reserves a private area in mbufs. It also
> removes the limitation that rte_pktmbuf_clone() is only allowed on
> direct (non-cloned) mbufs. The series also contains some enhancements
> and fixes in the mbuf area that makes the implementation of the
> last patches easier.
> 
> Changes in v4:
> - do not add a priv_size in mbuf structure, having a proper accessor
>   to read it from the pool private area is clearer
> - prepend some reworks in the mbuf area to simplify the implementation
>   (fix mbuf initialization by not using a hardcoded mbuf size, add
>   accessors for mbuf pool private area, add a helper to create a
>   mbuf pool)
> 
> Changes in v3:
> - a mbuf can now attach to another one that have a different private
>   size. In this case, the m->priv_size corresponds to the size of the
>   private area of the direct mbuf.
> - add comments to reflect these changes
> - minor style modifications
> 
> Changes in v2:
> - do not change the use of MBUF_EXT_MEM() in vhost
> - change rte_mbuf_from_baddr() to rte_mbuf_from_indirect(), removing
>   one parameter
> - fix and rework rte_pktmbuf_detach()
> - move m->priv_size in second mbuf cache line
> - fix mbuf free in test error case
> 
> 
> Olivier Matz (12):
>   mbuf: fix mbuf data room size calculation rte_pktmbuf_pool_init
>   examples: always initialize mbuf_pool private area
>   mbuf: add accessors to get data room size and private size
>   mbuf: fix rte_pktmbuf_init when mbuf private size is not zero
>   testpmd: use standard functions to initialize mbufs and mbuf pool
>   mbuf: introduce a new helper to create a mbuf pool
>   apps: use rte_pktmbuf_pool_create to create mbuf pools
>   mbuf: fix clone support when application uses private mbuf data
>   mbuf: allow to clone an indirect mbuf
>   test/mbuf: rename mc variable in m
>   test/mbuf: enhance mbuf refcnt test
>   test/mbuf: verify that cloning a clone works properly
> 
>  app/test-pipeline/init.c                           |  15 +-
>  app/test-pmd/testpmd.c                             |  78 +--------
>  app/test/test_distributor.c                        |  10 +-
>  app/test/test_distributor_perf.c                   |  10 +-
>  app/test/test_kni.c                                |  16 +-
>  app/test/test_link_bonding.c                       |  10 +-
>  app/test/test_link_bonding_mode4.c                 |  12 +-
>  app/test/test_mbuf.c                               | 110 +++++++++---
>  app/test/test_pmd_perf.c                           |  11 +-
>  app/test/test_pmd_ring.c                           |  10 +-
>  app/test/test_reorder.c                            |  10 +-
>  app/test/test_sched.c                              |  16 +-
>  app/test/test_table.c                              |   9 +-
>  app/test/test_table.h                              |   3 +-
>  doc/guides/rel_notes/updating_apps.rst             |  16 ++
>  examples/bond/main.c                               |  10 +-
>  examples/distributor/main.c                        |  11 +-
>  examples/dpdk_qat/main.c                           |  10 +-
>  examples/exception_path/main.c                     |  14 +-
>  examples/ip_fragmentation/main.c                   |  18 +-
>  examples/ip_pipeline/init.c                        |  28 +--
>  examples/ipv4_multicast/main.c                     |  21 +--
>  examples/kni/main.c                                |  12 +-
>  examples/l2fwd-ivshmem/host/host.c                 |  10 +-
>  examples/l2fwd-jobstats/main.c                     |  10 +-
>  examples/l2fwd/main.c                              |  11 +-
>  examples/l3fwd-acl/main.c                          |  11 +-
>  examples/l3fwd-power/main.c                        |  11 +-
>  examples/l3fwd-vf/main.c                           |  12 +-
>  examples/l3fwd/main.c                              |  10 +-
>  examples/link_status_interrupt/main.c              |  10 +-
>  examples/load_balancer/init.c                      |  12 +-
>  examples/load_balancer/main.h                      |   4 +-
>  .../client_server_mp/mp_server/init.c              |  10 +-
>  examples/multi_process/symmetric_mp/main.c         |  10 +-
>  examples/netmap_compat/bridge/bridge.c             |  12 +-
>  examples/packet_ordering/main.c                    |  11 +-
>  examples/qos_meter/main.c                          |   7 +-
>  examples/qos_sched/init.c                          |  10 +-
>  examples/qos_sched/main.h                          |   2 +-
>  examples/quota_watermark/include/conf.h            |   2 +-
>  examples/quota_watermark/qw/main.c                 |   7 +-
>  examples/rxtx_callbacks/main.c                     |  11 +-
>  examples/skeleton/basicfwd.c                       |  13 +-
>  examples/vhost/main.c                              |  31 ++--
>  examples/vhost_xen/main.c                          |  11 +-
>  examples/vmdq/main.c                               |  11 +-
>  examples/vmdq_dcb/main.c                           |  10 +-
>  lib/librte_ether/rte_ethdev.c                      |   4 +-
>  lib/librte_mbuf/rte_mbuf.c                         |  63 +++++--
>  lib/librte_mbuf/rte_mbuf.h                         | 189 ++++++++++++++++-----
>  lib/librte_pmd_af_packet/rte_eth_af_packet.c       |   6 +-
>  lib/librte_pmd_bond/rte_eth_bond_alb.c             |  16 +-
>  lib/librte_pmd_e1000/em_rxtx.c                     |   5 +-
>  lib/librte_pmd_e1000/igb_rxtx.c                    |  12 +-
>  lib/librte_pmd_fm10k/fm10k_ethdev.c                |   6 +-
>  lib/librte_pmd_i40e/i40e_ethdev_vf.c               |   6 +-
>  lib/librte_pmd_i40e/i40e_rxtx.c                    |  15 +-
>  lib/librte_pmd_ixgbe/ixgbe_rxtx.c                  |  12 +-
>  lib/librte_pmd_pcap/rte_eth_pcap.c                 |   5 +-
>  lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c              |   7 +-
>  61 files changed, 499 insertions(+), 566 deletions(-)
> 
> -- 
> 2.1.4
> 
> 


[nhorman@hmsreliant dpdk]$ make config T=x86_64-native-linuxapp-gcc
Configuration done
[nhorman@hmsreliant dpdk]$ make
...
 CC test_kvargs.o
  LD test
test_pmd_perf.o: In function `test_pmd_perf':
test_pmd_perf.c:(.text+0xd1b): undefined reference to `rte_pktmbuf_pool_create'
test_table.o: In function `test_table':
test_table.c:(.text+0x2da): undefined reference to `rte_pktmbuf_pool_create'
test_mbuf.o: In function `test_mbuf':
test_mbuf.c:(.text+0x3d5c): undefined reference to `rte_pktmbuf_pool_create'
test_mbuf.c:(.text+0x542a): undefined reference to `rte_pktmbuf_pool_create'
test_sched.o: In function `test_sched':
test_sched.c:(.text+0x5b1): undefined reference to `rte_pktmbuf_pool_create'
test_distributor.o:test_distributor.c:(.text+0x40a9): more undefined references
to `rte_pktmbuf_pool_create' follow

Neil