From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: "Wang, Dong1" <dong1.wang@intel.com>,
"Lipiec, Herakliusz" <herakliusz.lipiec@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "thomas@monjalon.net" <thomas@monjalon.net>,
"Burakov, Anatoly" <anatoly.burakov@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2] example/ipv4_multicast: fix app hanging when using clone
Date: Wed, 14 Nov 2018 09:02:49 +0000 [thread overview]
Message-ID: <2601191342CEEE43887BDE71AB977258010CEB7388@IRSMSX106.ger.corp.intel.com> (raw)
In-Reply-To: <3E2E5017C928014B90FD7864A64F0B5514F74985@SHSMSX103.ccr.corp.intel.com>
Hi Dong,
> Hi Herakliusz,
>
> Since pkt->ol_flags might set some other bits except IND_ATTACHED_MBUF, how about set its value to original pkt->ol_flag
It could be done, but not sure what is the point?
Which flags you think we need to copy from cloned mbuf (segment #2) to new header?
Konstantin
>
> Regards,
> Dong
>
> -----Original Message-----
> From: Lipiec, Herakliusz
> Sent: Tuesday, November 13, 2018 19:49
> To: dev@dpdk.org
> Cc: Ananyev, Konstantin <konstantin.ananyev@intel.com>; Wang, Dong1 <dong1.wang@intel.com>; thomas@monjalon.net; Burakov,
> Anatoly <anatoly.burakov@intel.com>; Lipiec, Herakliusz <herakliusz.lipiec@intel.com>; stable@dpdk.org
> Subject: [PATCH v2] example/ipv4_multicast: fix app hanging when using clone
>
> The ipv4_multicast sample application was dropping packets when using mbuf clone. When creating an L2 header and copying metadata
> from the source packet, the ol_flags were also copied along with all the other metadata. Because the cloned packet had
> IND_ATTACHED_MBUF flag set in its ol_flags, this caused the packets to never be freed when using rte_pktmbuf_free.
> Since copying ol_flags from the cloned packet is not necessary in the first place, just don't do it.
>
> Fixes: af75078fece3 ("first public release")
> CC: stable@dpdk.org
>
> Reported-by: Wang Dong <dong1.wang@intel.com>
> Signed-off-by: Herakliusz Lipiec <herakliusz.lipiec@intel.com>
> ---
> doc/guides/sample_app_ug/ipv4_multicast.rst | 1 -
> examples/ipv4_multicast/main.c | 2 --
> 2 files changed, 3 deletions(-)
>
> diff --git a/doc/guides/sample_app_ug/ipv4_multicast.rst b/doc/guides/sample_app_ug/ipv4_multicast.rst
> index ce1474ec7..f6efa7f6f 100644
> --- a/doc/guides/sample_app_ug/ipv4_multicast.rst
> +++ b/doc/guides/sample_app_ug/ipv4_multicast.rst
> @@ -319,7 +319,6 @@ It is the mcast_out_pkt() function that performs the packet duplication (either
> hdr->pkt.in_port = pkt->pkt.in_port;
> hdr->pkt.vlan_macip = pkt->pkt.vlan_macip;
> hdr->pkt.hash = pkt->pkt.hash;
> - hdr->ol_flags = pkt->ol_flags;
> rte_mbuf_sanity_check(hdr, RTE_MBUF_PKT, 1);
>
> return hdr;
> diff --git a/examples/ipv4_multicast/main.c b/examples/ipv4_multicast/main.c index 4073a4907..428ca4694 100644
> --- a/examples/ipv4_multicast/main.c
> +++ b/examples/ipv4_multicast/main.c
> @@ -266,8 +266,6 @@ mcast_out_pkt(struct rte_mbuf *pkt, int use_clone)
> hdr->tx_offload = pkt->tx_offload;
> hdr->hash = pkt->hash;
>
> - hdr->ol_flags = pkt->ol_flags;
> -
> __rte_mbuf_sanity_check(hdr, 1);
> return hdr;
> }
> --
> 2.17.1
next prev parent reply other threads:[~2018-11-14 9:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-12 20:46 [dpdk-dev] [PATCH] " Herakliusz Lipiec
2018-11-12 22:44 ` Ananyev, Konstantin
2018-11-13 9:25 ` Thomas Monjalon
2018-11-13 9:47 ` Ananyev, Konstantin
2018-11-13 10:21 ` Burakov, Anatoly
2018-11-13 10:28 ` Ananyev, Konstantin
2018-11-13 11:49 ` [dpdk-dev] [PATCH v2] " Herakliusz Lipiec
2018-11-13 11:51 ` Ananyev, Konstantin
2018-11-14 11:33 ` Wang, Dong1
2018-11-18 21:56 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2018-11-14 2:28 ` [dpdk-dev] " Wang, Dong1
2018-11-14 9:02 ` Ananyev, Konstantin [this message]
2018-11-14 10:09 ` Wang, Dong1
2018-11-14 10:17 ` Ananyev, Konstantin
2018-11-14 11:06 ` Wang, Dong1
2018-11-14 11:19 ` Ananyev, Konstantin
2018-11-14 11:32 ` Wang, Dong1
2018-11-20 5:40 ` Zhao1, Wei
2018-11-20 9:52 ` Ananyev, Konstantin
2018-11-14 10:21 ` Lipiec, Herakliusz
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