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From: Andriy Berestovskyy <Andriy.Berestovskyy@caviumnetworks.com>
To: Bruce Richardson <bruce.richardson@intel.com>,
	Thomas Monjalon <thomas.monjalon@6wind.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3] ether: use a default for max Rx frame size in configure()
Date: Fri, 7 Apr 2017 16:18:40 +0200	[thread overview]
Message-ID: <b317cead-c0a0-bb36-b928-b479b47cdb0f@caviumnetworks.com> (raw)
In-Reply-To: <20170407122956.GA26192@bricha3-MOBL3.ger.corp.intel.com>

Hey Bruce,

On 07.04.2017 14:29, Bruce Richardson wrote:
> Is this entirely hidden from drivers? As I said previously, I believe
> NICs using ixgbe/i40e etc. only use the frame size value when the jumbo
> frame flag is set. That may lead to further inconsistent behaviour unless
> all NICs are set up to behave as expected too.

You are right. If we take just Intel PMDs: some use the max_rx_pkt_len 
only for jumbo frames (ixgbe), some always (i40) and some never (fm10k).

What if we add to the max_rx_pkt_len description: "the effective maximum 
RX frame size depends on PMD, please refer the PMD guide for the details"?

So with this patch we make rte_eth_dev_configure() clear and later PMDs 
might change or clarify their limitations in the NIC guides.

Andriy

  reply	other threads:[~2017-04-07 14:18 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-23 17:06 [dpdk-dev] [PATCH] ether: fix configure() to use a default for max_rx_pkt_len Andriy Berestovskyy
2017-03-24 11:52 ` [dpdk-dev] [PATCH v2] ether: use a default for max Rx frame size in configure() Andriy Berestovskyy
2017-03-27  6:15   ` Yang, Qiming
2017-03-27  8:38     ` Andriy Berestovskyy
2017-04-07  8:24       ` Bruce Richardson
2017-04-06 20:48   ` Thomas Monjalon
2017-04-07  8:09     ` Andriy Berestovskyy
2017-04-07  8:34       ` Thomas Monjalon
2017-04-07  8:55         ` Andriy Berestovskyy
2017-04-07 11:02 ` [dpdk-dev] [PATCH v3] " Andriy Berestovskyy
2017-04-07 12:15   ` Thomas Monjalon
2017-04-07 12:29     ` Bruce Richardson
2017-04-07 14:18       ` Andriy Berestovskyy [this message]
2017-04-07 14:47         ` Thomas Monjalon
2017-04-07 15:27           ` Andriy Berestovskyy
2017-04-20 22:25             ` Thomas Monjalon
2017-04-24 14:50               ` Andriy Berestovskyy
2017-07-31 22:33                 ` Thomas Monjalon
2018-05-22 22:30                   ` Thomas Monjalon
2018-05-23  5:21                     ` Shahaf Shuler
2018-05-23  5:23                       ` Jerin Jacob
2018-05-24  9:20                       ` Andriy Berestovskyy
2019-01-23 18:36                         ` Ferruh Yigit
2019-01-25 21:15                           ` Andriy Berestovskyy
2017-04-10 14:30 ` [dpdk-dev] [PATCH 1/3] examples/ip_fragmentation: limit max frame size Andriy Berestovskyy
2017-04-10 14:30   ` [dpdk-dev] [PATCH 2/3] examples/ip_reassembly: " Andriy Berestovskyy
2017-04-10 14:30   ` [dpdk-dev] [PATCH 3/3] examples/ipv4_multicast: " Andriy Berestovskyy
2017-04-21  0:21   ` [dpdk-dev] [PATCH 1/3] examples/ip_fragmentation: " Thomas Monjalon
2023-06-08 16:51 ` [PATCH v3] ether: use a default for max Rx frame size in configure() Stephen Hemminger

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