[dpdk-dev] [RFC 0/3] ethdev: add IP address and TCP/UDP port rewrite actions to flow API

Jack Min jackmin at mellanox.com
Tue Jul 3 04:27:55 CEST 2018


Hey Rahul,

Thank you, those two are the ways to achieve that.

Personally I prefer the option 1 but with a little bit difference, something like:

    struct rte_flow_action_of_set_nw_ipv4 {
 	   uint32_t ipv4_addr;
                uint8_t   level;  /* 0 - outer (default), 1 - inner, 2 -255 deeper if available */
    };

What do you think ?

-Jack

> -----Original Message-----
> From: Rahul Lakkireddy <rahul.lakkireddy at chelsio.com>
> Sent: July 2, 2018 20:04
> To: Jack Min <jackmin at mellanox.com>
> Cc: dev at dpdk.org; Shagun Agarwal <shaguna at chelsio.com>; Indranil Choudhury
> <indranil at chelsio.com>; Nirranjan Kirubaharan <nirranjan at chelsio.com>; Shahaf
> Shuler <shahafs at mellanox.com>; Xueming(Steven) Li <xuemingl at mellanox.com>
> Subject: Re: [dpdk-dev] [RFC 0/3] ethdev: add IP address and TCP/UDP port
> rewrite actions to flow API
> 
> Hi Jack,
> 
> On Monday, July 07/02/18, 2018 at 14:39:06 +0530, Jack Min wrote:
> > Hey,
> >
> > I've one question:
> >
> > Do those APIs support modify inner IP headers?
> >
> 
> I'm afraid not. These API only modify outer IP addresses.
> 
> I can think of two ways to achieve this:
> 
> 1. Enhance these API to accept an additional flag to indicate
>    inner or outer. For example, to set inner IPv4 address, we can
>    set inner to 1 in following structure.
> 
>    struct rte_flow_action_of_set_nw_ipv4 {
> 	   uint32_t inner:1; /* 1 - Inner, 0 - Outer */
> 	   uint32_t reserved:31;
> 	   uint32_t ipv4_addr;
>    };
> 
> 2. Add new actions to indicate inner IP addresses; i.e.
> 
>    RTE_FLOW_ACTION_TYPE_OF_SET_INNER_NW_IPV4_SRC
>    RTE_FLOW_ACTION_TYPE_OF_SET_INNER_NW_IPV4_DST
>    RTE_FLOW_ACTION_TYPE_OF_SET_INNER_NW_IPV6_SRC
>    RTE_FLOW_ACTION_TYPE_OF_SET_INNER_NW_IPV6_DST
> 
> Thanks,
> Rahul
> 
> > In our scenarios, we need to specific that  NAT action is on inner or outer IP
> header.
> >
> > Thanks,
> > -Jack
> >
> > > -----Original Message-----
> > > From: dev <dev-bounces at dpdk.org> On Behalf Of Rahul Lakkireddy
> > > Sent: June 22, 2018 17:56
> > > To: dev at dpdk.org
> > > Cc: shaguna at chelsio.com; indranil at chelsio.com; nirranjan at chelsio.com
> > > Subject: [dpdk-dev] [RFC 0/3] ethdev: add IP address and TCP/UDP
> > > port rewrite actions to flow API
> > >
> > > This series of patches add support for actions:
> > > - OF_SET_NW_IPV4_SRC - set a new IPv4 source address.
> > > - OF_SET_NW_IPV4_DST - set a new IPv4 destination address.
> > > - OF_SET_NW_IPV6_SRC - set a new IPv6 source address.
> > > - OF_SET_NW_IPV6_DST - set a new IPv6 destination address.
> > > - OF_SET_TP_SRC - set a new TCP/UDP source port number.
> > > - OF_SET_TP_DST - set a new TCP/UDP destination port number.
> > >
> > > These actions are useful in Network Address Translation use case to
> > > edit IP address and TCP/UDP port numbers before switching the
> > > packets out to the destination device port.
> > >
> > > The IP address and TCP/UDP port rewrite actions are based on
> > > OFPAT_SET_NW_SRC, OFPAT_SET_NW_DST, OFPAT_SET_TP_SRC, and
> > > OFPAT_SET_TP_DST actions from OpenFlow Specification [1].
> > >
> > > Patch 1 adds support for IP address rewrite to rte_flow and testpmd.
> > >
> > > Patch 2 adds support for TCP/UDP port rewrite to rte_flow and testpmd.
> > >
> > > Patch 3 shows CXGBE PMD example to offload these actions to hardware.
> > >
> > > Feedback and suggestions will be much appreciated.
> > >
> > > Thanks,
> > > Rahul
> > >
> > > [1]
> > > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fww
> > > w.open
> > > networking.org%2Fimages%2Fopenflow-switch-
> > >
> v1.5.1.pdf&data=02%7C01%7Cxuemingl%40mellanox.com%7C74c8ce3b79954b2f
> > >
> 123208d5d8268617%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C1%7C636
> > >
> 652582334142929&sdata=uoFc1KjVTkGI9fdaPNXvXYRmh%2F6HLMKT79IwgvDSH
> > > 0k%3D&reserved=0
> > >
> > > Shagun Agrawal (3):
> > >   ethdev: add flow api actions to modify IP addresses
> > >   ethdev: add flow api actions to modify TCP/UDP port numbers
> > >   net/cxgbe: add flow actions to modify IP and TCP/UDP port address
> > >
> > >  app/test-pmd/cmdline_flow.c                 | 150
> > > ++++++++++++++++++++++++++++
> > >  app/test-pmd/config.c                       |  12 +++
> > >  doc/guides/prog_guide/rte_flow.rst          | 102 +++++++++++++++++++
> > >  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  24 +++++
> > >  drivers/net/cxgbe/base/common.h             |   1 +
> > >  drivers/net/cxgbe/base/t4fw_interface.h     |  50 ++++++++++
> > >  drivers/net/cxgbe/cxgbe_filter.c            |  23 ++++-
> > >  drivers/net/cxgbe/cxgbe_filter.h            |  26 ++++-
> > >  drivers/net/cxgbe/cxgbe_flow.c              | 127 +++++++++++++++++++++++
> > >  drivers/net/cxgbe/cxgbe_main.c              |  10 ++
> > >  lib/librte_ethdev/rte_flow.c                |  12 +++
> > >  lib/librte_ethdev/rte_flow.h                |  92 +++++++++++++++++
> > >  12 files changed, 625 insertions(+), 4 deletions(-)
> > >
> > > --
> > > 2.14.1
> >


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