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by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 1AB9240060; Sun, 19 Jul 2020 12:30:34 +0000 (UTC) Received: from webmail.solarflare.com (uk.solarflare.com [193.34.186.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id A485EB8005D; Sun, 19 Jul 2020 12:30:33 +0000 (UTC) Received: from [192.168.38.17] (10.17.10.39) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 19 Jul 2020 13:30:27 +0100 To: "Wei Hu (Xavier)" , CC: , References: <1594978339-9720-1-git-send-email-xavier.huwei@huawei.com> From: Andrew Rybchenko Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 j9UEwGA+omnOmqQMpeQTb/F9Ma2dYE+Hw4/t/1KVjxr3ehFaASvwR4fWJfO4e2l/Rk4rG6Yi 5r6CWU2y8su2654Fr8KFc+cMGOAgKoZTZHZsRy5lHpMlemeF+VZkv8L5sYJWPnsypgqlCG3h 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7WrJz/GvbNoFhJoJ6RzxCMQrFgxrssVZ7w5HcUj94lbnJ6osdYE/WpSd50B6jet6LKh5revg u9XI9CoqsPQ1V4wKYYdllPuogCye7KNYNKuiiuSNpaF4gHq1ZWGArwZtWHjgc2v3LegOpRQF SwOskMKmWsUyHIRMG1p8RpkBQTqY2rGSeUqPSvaqjT0nq+SUEM6qxEXD/2Wqri/X6bamuPDb S0PkBvFD2+0zr5Bc2YkMGPBYPNGZiTp3UjmZlLfn3TiBKIC92jherY563CULjSsiBEJCOSvv 4VPLn5aAcfbCXJnE3IGCp/hPl50iQqu7BPOYBbWXeb9ptDjGCAThNxSz0WAXkmcjAFE8gdE6 Znk9 Message-ID: <996c7d92-6f87-d14a-f084-50372434e01a@solarflare.com> Date: Sun, 19 Jul 2020 15:30:22 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <1594978339-9720-1-git-send-email-xavier.huwei@huawei.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.17.10.39] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.6.1012-25550.003 X-TM-AS-Result: No-15.176400-8.000000-10 X-TMASE-MatchedRID: VfovoVrt/ob8lQjD/R2Nt/ZvT2zYoYOwC/ExpXrHizzGZbX3v50Wr4YM M3r3suSe+IBL9puSZJrQBn1jsqNP709OXLef1sAMWHtqkSN9ysMpWss5kPUFdKG5aTllKKiH6rc VT5AYAUm3hwfBkESOX3dAniBzVIZZEN4tzK6h73dJUdgxNDUXWmeegqIZCWGQxzfbZxx4F4SI67 0cXedtNrfeBlMMK7Ip9bpIA2s63D+ojh8JWM3BnMmR5yDJkPg4bsFLINmYCfF+oVax2yyxN5bPB saBVoblSMAwESe6Ry+Rk6XtYogiau9c69BWUTGwVnRXm1iHN1bEQdG7H66TyH4gKq42LRYkIu6M 8aLuFSlkF8bZuceCoQGomIvBEiczr1lgsy0xGbl+3BndfXUhXQ== X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--15.176400-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.6.1012-25550.003 X-MDID: 1595161834-2eC2x2iq-zWg Subject: Re: [dpdk-dev] [RFC PATCH] ethdev: add a new flow action of queue range X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 7/17/20 12:32 PM, Wei Hu (Xavier) wrote: > From: Chengwen Feng > > This patch adds a new flow action of queue range, which was used to assign > packets to a continuous queue range. > > Current FD (flow director) provide a useful means to assign packets to > a target queue. But it has the following shortage: it can only route > to one queue, and there is an upper limit on one queue rxtx capacity, > which means the FD rule need more accurate else it may exceed the > queue capacity. > > With the support of queue range action, user can create FD rule with > action routed to a continuous queues, like: > FD rule 0 ------|-----> queue 0 > |-----> queue 1 > > FD rule 1 ------|-----> queue 8 > |-----> queue 9 > |-----> queue 10 > |-----> queue 11 > Note: hardware can use RSS to distribute traffic to the continuous queues > when packets match the above FD rule. > > With the support of queue range action, we can further provide QoS > service when DCB disabled. > eg: one NE (network element) is configured with two ip addresses, one for > control plane and the other for data plane, user can create two FD rules, > the first for directing control plane packets to queue 0, the second for > directing data plane packets to queue 1~15. I don't understand why it is not covered by RSS action. > > Signed-off-by: Chengwen Feng > Signed-off-by: Wei Hu (Xavier) [snip]