From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Konstantin Ananyev <konstantin.ananyev@intel.com>
Cc: <dev@dpdk.org>, Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [dpdk-dev] [PATCH v4 09/15] net/sfc: use new rte_eth_linkstatus functions
Date: Fri, 12 Jan 2018 10:45:34 +0300 [thread overview]
Message-ID: <2c9a2b1d-0b0f-7a5d-0cfc-3dd64868d62d@solarflare.com> (raw)
In-Reply-To: <20180111170658.2809-9-ferruh.yigit@intel.com>
On 01/11/2018 08:06 PM, Ferruh Yigit wrote:
> From: Stephen Hemminger <stephen@networkplumber.org>
>
> Use the new API (_rte_eth_linkstatus_set) to handle link status update.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
> drivers/net/sfc/sfc_ethdev.c | 27 +++++++--------------------
> drivers/net/sfc/sfc_ev.c | 23 ++++-------------------
> 2 files changed, 11 insertions(+), 39 deletions(-)
<...>
> diff --git a/drivers/net/sfc/sfc_ev.c b/drivers/net/sfc/sfc_ev.c
> index 7abe61ae5..242b1fae4 100644
> --- a/drivers/net/sfc/sfc_ev.c
> +++ b/drivers/net/sfc/sfc_ev.c
> @@ -382,29 +382,14 @@ sfc_ev_link_change(void *arg, efx_link_mode_t link_mode)
> {
> struct sfc_evq *evq = arg;
> struct sfc_adapter *sa = evq->sa;
> - struct rte_eth_link *dev_link = &sa->eth_dev->data->dev_link;
> struct rte_eth_link new_link;
> - uint64_t new_link_u64;
> - uint64_t old_link_u64;
> -
> - EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
>
> sfc_port_link_mode_to_info(link_mode, &new_link);
> + if (_rte_eth_linkstatus_set(sa->eth_dev, &new_link) == 0)
> + return B_FALSE;
>
> - new_link_u64 = *(uint64_t *)&new_link;
> - do {
> - old_link_u64 = rte_atomic64_read((rte_atomic64_t *)dev_link);
> - if (old_link_u64 == new_link_u64)
> - break;
> -
> - if (rte_atomic64_cmpset((volatile uint64_t *)dev_link,
> - old_link_u64, new_link_u64)) {
> - evq->sa->port.lsc_seq++;
> - break;
> - }
> - } while (B_TRUE);
> -
> - return B_FALSE;
> + evq->sa->port.lsc_seq++;
> + return B_TRUE;
> }
>
> static const efx_ev_callbacks_t sfc_ev_callbacks = {
I've provided review notes for the callback a couple of times already,
but it is ignored.
The callback returns B_FALSE before the change and it must be preserved.
The return value must not depend on link status changes.
lsc_seq should be incremented in the case of any changes in link,
not up/down changes only and it should be preserved.
next prev parent reply other threads:[~2018-01-12 7:45 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-08 17:44 [dpdk-dev] [PATCH v3 00/15] common ethdev linkstatus functions Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 01/15] eal: introduce atomic exchange operation Stephen Hemminger
2018-01-11 17:01 ` Ferruh Yigit
2018-01-25 23:24 ` Stephen Hemminger
2018-03-08 22:12 ` Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 02/15] ethdev: add linkstatus get/set helper functions Stephen Hemminger
2018-01-09 10:30 ` Andrew Rybchenko
2018-01-09 16:29 ` Stephen Hemminger
2018-01-11 17:01 ` Ferruh Yigit
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 03/15] net/virtio: use eth_linkstatus_set Stephen Hemminger
2018-01-11 17:02 ` Ferruh Yigit
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 04/15] net/vmxnet3: use rte_eth_linkstatus_set Stephen Hemminger
2018-01-11 17:02 ` Ferruh Yigit
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 05/15] net/dpaa2: " Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 06/15] net/nfp: use rte_eth_linkstatus functions Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 07/15] net/e1000: use rte_eth_linkstatus helpers Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 08/15] net/ixgbe: use rte_eth_linkstatus functions Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 09/15] net/sfc: use new " Stephen Hemminger
2018-01-09 10:35 ` Andrew Rybchenko
2018-01-09 16:27 ` Stephen Hemminger
2018-01-09 19:29 ` Andrew Rybchenko
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 10/15] net/i40e: use " Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 11/15] net/liquidio: use _rte_eth_linkstatus_set Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 12/15] net/thunderx: " Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 13/15] net/szedata: " Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 14/15] net/octeontx: use rte_eth_linkstatus_set Stephen Hemminger
2018-01-08 17:45 ` [dpdk-dev] [PATCH v3 15/15] net/enic: use _rte_eth_linkstatus_set Stephen Hemminger
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 01/15] eal: introduce atomic exchange operation Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 02/15] ethdev: add linkstatus get/set helper functions Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 03/15] net/virtio: use eth_linkstatus_set Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 04/15] net/vmxnet3: use rte_eth_linkstatus_set Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 05/15] net/dpaa2: " Ferruh Yigit
2018-01-16 9:44 ` Shreyansh Jain
2018-01-16 9:57 ` Shreyansh Jain
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 06/15] net/nfp: use rte_eth_linkstatus functions Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 07/15] net/e1000: use rte_eth_linkstatus helpers Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 08/15] net/ixgbe: use rte_eth_linkstatus functions Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 09/15] net/sfc: use new " Ferruh Yigit
2018-01-12 7:45 ` Andrew Rybchenko [this message]
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 10/15] net/i40e: use " Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 11/15] net/liquidio: use _rte_eth_linkstatus_set Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 12/15] net/thunderx: " Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 13/15] net/szedata: " Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 14/15] net/octeontx: use rte_eth_linkstatus_set Ferruh Yigit
2018-01-11 17:06 ` [dpdk-dev] [PATCH v4 15/15] net/enic: use _rte_eth_linkstatus_set Ferruh Yigit
2018-01-12 14:05 ` Hyong Youb Kim
2018-01-16 18:25 [dpdk-dev] [PATCH v4 00/15] common ethdev linkstatus functions Stephen Hemminger
2018-01-16 18:25 ` [dpdk-dev] [PATCH v4 09/15] net/sfc: use new rte_eth_linkstatus functions Stephen Hemminger
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