Re: [lng-odp] [PATCH] linux-generic: dpdk: always set input hash functions

[Maxim Uvarov]

Merged,
Maxim.

On 04/06/16 08:18, Elo, Matias (Nokia - FI/Espoo) wrote:

Thanks,

-Matias

*From:*EXT Bill Fischofer [mailto:bill.fischo...@linaro.org]
*Sent:* Wednesday, April 06, 2016 3:22 AM
*To:* Elo, Matias (Nokia - FI/Espoo) <matias....@nokia.com>
*Cc:* LNG ODP Mailman List <lng-odp@lists.linaro.org>

*Subject:* Re: [lng-odp] [PATCH] linux-generic: dpdk: always set input hash functions

On Thu, Mar 10, 2016 at 3:12 AM, Matias Elo <matias....@nokia.com <mailto:matias....@nokia.com>> wrote:

    Always set at least the default input hash functions to
    enable DPDK RSS hash calculation.

    Signed-off-by: Matias Elo <matias....@nokia.com
    <mailto:matias....@nokia.com>>

Reviewed-by: Bill Fischofer <bill.fischo...@linaro.org <mailto:bill.fischo...@linaro.org>>

    ---
     platform/linux-generic/pktio/dpdk.c | 8 +++++++-
     1 file changed, 7 insertions(+), 1 deletion(-)

    diff --git a/platform/linux-generic/pktio/dpdk.c
    b/platform/linux-generic/pktio/dpdk.c
    index a39e7dc..10daa29 100644
    --- a/platform/linux-generic/pktio/dpdk.c
    +++ b/platform/linux-generic/pktio/dpdk.c
    @@ -185,7 +185,13 @@ static int dpdk_setup_port(pktio_entry_t
    *pktio_entry)
            pkt_dpdk_t *pkt_dpdk = &pktio_entry->s.pkt_dpdk;
            struct rte_eth_rss_conf rss_conf;

    -       rss_conf_to_hash_proto(&rss_conf, &pkt_dpdk->hash);
    +       /* Always set some hash functions to enable DPDK RSS hash
    calculation */
    +       if (pkt_dpdk->hash.all_bits == 0) {
    +               memset(&rss_conf, 0, sizeof(struct rte_eth_rss_conf));
    +               rss_conf.rss_hf = ETH_RSS_IP | ETH_RSS_TCP |
    ETH_RSS_UDP;
    +       } else {
    +  rss_conf_to_hash_proto(&rss_conf, &pkt_dpdk->hash);
    +       }

            struct rte_eth_conf port_conf = {
                    .rxmode = {
    --
    1.9.1

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