[dpdk-dev] [PATCH v2] l3fwd: fix lookup burst size for ipv6
Pattan, Reshma
reshma.pattan at intel.com
Tue Nov 10 14:46:26 CET 2015
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Pablo de Lara
> Sent: Tuesday, November 3, 2015 8:14 PM
> To: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH v2] l3fwd: fix lookup burst size for ipv6
>
> Lookup burst size was changed for exact match from 4 to 8, for both ipv4 and
> ipv6, but actually only
> 4 keys were being looked up for ipv6, instead of 8, causing random
> segmentation faults.
>
> Fixes: 80fcb4d4 ("examples/l3fwd: increase lookup burst size to 8")
>
> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
> ---
> Changes in v2:
> - Include update in release notes
>
> doc/guides/rel_notes/release_2_2.rst | 4 ++++
> examples/l3fwd/main.c | 2 +-
> 2 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/doc/guides/rel_notes/release_2_2.rst
> b/doc/guides/rel_notes/release_2_2.rst
> index b39a78a..0172354 100644
> --- a/doc/guides/rel_notes/release_2_2.rst
> +++ b/doc/guides/rel_notes/release_2_2.rst
> @@ -143,6 +143,10 @@ Libraries
> Examples
> ~~~~~~~~
>
> +* **l3fwd: fix lookup burst size for ipv6.**
> +
> + Fixed issue where app crashes if ipv6 is used, due to a wrong lookup
> + burst size.
>
> Other
> ~~~~~
> diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c index
> 1f3e5c6..74703b0 100644
> --- a/examples/l3fwd/main.c
> +++ b/examples/l3fwd/main.c
> @@ -1005,7 +1005,7 @@ simple_ipv6_fwd_8pkts(struct rte_mbuf *m[8],
> uint8_t portid, struct lcore_conf *
> const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
> &key[4], &key[5], &key[6], &key[7]};
>
> - rte_hash_lookup_multi(qconf->ipv6_lookup_struct, &key_array[0], 4,
> ret);
> + rte_hash_lookup_multi(qconf->ipv6_lookup_struct, &key_array[0], 8,
> +ret);
> dst_port[0] = (uint8_t) ((ret[0] < 0) ? portid:ipv6_l3fwd_out_if[ret[0]]);
> dst_port[1] = (uint8_t) ((ret[1] < 0) ? portid:ipv6_l3fwd_out_if[ret[1]]);
> dst_port[2] = (uint8_t) ((ret[2] < 0) ? portid:ipv6_l3fwd_out_if[ret[2]]);
> --
> 2.4.3
Acked-by: Reshma Pattan<Reshma.pattan at intel.com>
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