From: Stephen Hemminger <stephen@networkplumber.org>
To: Raghu Vatsavayi <rvatsavayi@caviumnetworks.com>
Cc: <davem@davemloft.net>, <netdev@vger.kernel.org>,
Derek Chickles <derek.chickles@caviumnetworks.com>,
Satanand Burla <satananda.burla@caviumnetworks.com>,
Felix Manlunas <felix.manlunas@caviumnetworks.com>,
Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Subject: Re: [PATCH net-next v3] Add support of Cavium Liquidio ethernet adapters
Date: Thu, 18 Dec 2014 23:14:01 -0800 [thread overview]
Message-ID: <20141218231401.3f569ad9@urahara> (raw)
In-Reply-To: <1418959519-31681-1-git-send-email-rvatsavayi@caviumnetworks.com>
On Thu, 18 Dec 2014 19:25:19 -0800
Raghu Vatsavayi <rvatsavayi@caviumnetworks.com> wrote:
> +static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
> +{
> + struct lio *lio;
> + struct octnet_buf_free_info *finfo;
> + union octnic_cmd_setup cmdsetup;
> + struct octnic_data_pkt ndata;
> + struct octeon_device *oct;
> + int cpu = 0, status = 0;
> + int q_idx = 0;
> + int xmit_more;
> +
> + lio = GET_LIO(netdev);
> + oct = lio->oct_dev;
> + atomic64_inc((atomic64_t *)&lio->stats.tx_packets);
> + lio->stats.tx_bytes += skb->len;
> +
> + if (!ifstate_check(lio, LIO_IFSTATE_TXENABLED)) {
> + lio_info(lio, tx_err, "Transmit Busy, not enabled\n");
> + return NETDEV_TX_BUSY;
> + }
This kind of busy handling in transmit, will cause the send in higher
level to retry and spin the CPU. Better to do proper flow control
like other drivers.
next prev parent reply other threads:[~2014-12-19 7:14 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-24 3:19 [PATCH v2] Add support of Cavium Liquidio ethernet adapters Raghu Vatsavayi
2014-11-24 20:52 ` Daniel Borkmann
2014-11-24 21:01 ` Florian Fainelli
2014-11-24 21:08 ` David Miller
2014-12-01 19:57 ` Vatsavayi, Raghu
2014-12-19 3:25 ` [PATCH net-next v3] " Raghu Vatsavayi
2014-12-19 6:59 ` Stephen Hemminger
2014-12-19 17:54 ` Chickles, Derek
2014-12-19 7:01 ` Stephen Hemminger
2014-12-19 7:03 ` Stephen Hemminger
2014-12-19 7:05 ` Stephen Hemminger
2014-12-19 7:07 ` Stephen Hemminger
2014-12-19 7:11 ` Stephen Hemminger
2014-12-19 7:14 ` Stephen Hemminger [this message]
2014-12-19 7:21 ` Stephen Hemminger
2014-12-19 7:23 ` Stephen Hemminger
2014-12-19 7:26 ` Stephen Hemminger
2014-12-19 7:28 ` Stephen Hemminger
2014-12-19 18:39 ` Chickles, Derek
2014-12-19 20:53 ` Stephen Hemminger
2014-12-19 20:44 ` Lino Sanfilippo
2014-12-19 20:54 ` Stephen Hemminger
2014-12-19 21:00 ` Lino Sanfilippo
2014-12-19 21:07 ` Lino Sanfilippo
2014-12-19 21:14 ` Lino Sanfilippo
2014-12-19 21:48 ` Lino Sanfilippo
2014-12-19 22:39 ` Chickles, Derek
2014-12-19 22:04 ` Lino Sanfilippo
2014-12-19 22:20 ` Chickles, Derek
2014-12-19 22:24 ` Lino Sanfilippo
2014-12-19 22:53 ` Chickles, Derek
2014-12-19 22:51 ` Lino Sanfilippo
2014-12-20 0:47 ` Chickles, Derek
2015-01-31 2:29 ` [PATCH net-next v4] " Raghu Vatsavayi
2015-02-03 3:00 ` David Miller
2015-02-06 20:28 ` Chickles, Derek
2015-02-12 1:20 ` [PATCH net-next v5] " Raghu Vatsavayi
2015-02-19 19:36 ` David Miller
2015-02-19 20:44 ` Chickles, Derek
2015-02-19 21:21 ` David Miller
2015-02-19 21:28 ` Chickles, Derek
2015-04-08 19:08 ` [PATCH net-next v6] " Raghu Vatsavayi
2015-04-09 0:46 ` Joe Perches
2015-04-25 0:34 ` [PATCH net-next v7] " Raghu Vatsavayi
2015-04-26 20:04 ` David Miller
2015-04-27 16:26 ` Chickles, Derek
2015-04-27 16:27 ` David Miller
2015-04-27 17:04 ` Chickles, Derek
2015-04-27 17:22 ` David Miller
2015-06-10 1:15 ` [PATCH net-next v8] " Raghu Vatsavayi
2015-06-11 5:45 ` David Miller
2014-12-20 0:33 ` [PATCH net-next v3] " Lino Sanfilippo
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