From patchwork Fri Dec 2 07:44:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Rybchenko X-Patchwork-Id: 17390 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id A516BFA46; Fri, 2 Dec 2016 08:45:17 +0100 (CET) Received: from nbfkord-smmo02.seg.att.com (nbfkord-smmo02.seg.att.com [209.65.160.78]) by dpdk.org (Postfix) with ESMTP id 6D2BCFA32 for ; Fri, 2 Dec 2016 08:45:07 +0100 (CET) Received: from unknown [12.187.104.26] (EHLO webmail.solarflare.com) by nbfkord-smmo02.seg.att.com(mxl_mta-7.2.4-7) over TLS secured channel with ESMTP id 28621485.0.106140.00-2379.245923.nbfkord-smmo02.seg.att.com (envelope-from ); Fri, 02 Dec 2016 07:45:07 +0000 (UTC) X-MXL-Hash: 5841268374c3773c-12ddb13d5a5bfa8f759641e1f747b6d2282dfff8 Received: from ocex03.SolarFlarecom.com (10.20.40.36) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Thu, 1 Dec 2016 23:45:01 -0800 Received: from opal.uk.solarflarecom.com (10.17.10.1) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25 via Frontend Transport; Thu, 1 Dec 2016 23:45:01 -0800 Received: from uklogin.uk.solarflarecom.com (uklogin.uk.solarflarecom.com [10.17.10.10]) by opal.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id uB27j0Sa005859 for ; Fri, 2 Dec 2016 07:45:00 GMT Received: from uklogin.uk.solarflarecom.com (localhost.localdomain [127.0.0.1]) by uklogin.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id uB27ixwg026628 for ; Fri, 2 Dec 2016 07:45:00 GMT From: Andrew Rybchenko To: Date: Fri, 2 Dec 2016 07:44:25 +0000 Message-ID: <1480664691-26561-6-git-send-email-arybchenko@solarflare.com> X-Mailer: git-send-email 1.8.2.3 In-Reply-To: <1480664691-26561-1-git-send-email-arybchenko@solarflare.com> References: <1480664691-26561-1-git-send-email-arybchenko@solarflare.com> MIME-Version: 1.0 X-AnalysisOut: [v=2.1 cv=NIXTjhOg c=1 sm=1 tr=0 a=8BlWFWvVlq5taO8ncb8nKg==] X-AnalysisOut: [:17 a=n5n_aSjo0skA:10 a=zRKbQ67AAAAA:8 a=5T_ch_uTvokPGJSLu] X-AnalysisOut: [ScA:9 a=PA03WX8tBzeizutn5_OT:22] X-Spam: [F=0.3154165037; CM=0.500; S=0.315(2015072901)] X-MAIL-FROM: X-SOURCE-IP: [12.187.104.26] Subject: [dpdk-dev] [PATCH 05/31] net/sfc: support flow control settings get/set 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" Reviewed-by: Andrew Lee Reviewed-by: Robert Stonehouse Signed-off-by: Andrew Rybchenko --- doc/guides/nics/features/sfc_efx.ini | 1 + doc/guides/nics/sfc_efx.rst | 2 + drivers/net/sfc/sfc_ethdev.c | 98 ++++++++++++++++++++++++++++++++++++ drivers/net/sfc/sfc_port.c | 8 +++ 4 files changed, 109 insertions(+) diff --git a/doc/guides/nics/features/sfc_efx.ini b/doc/guides/nics/features/sfc_efx.ini index 698553c..25472f8 100644 --- a/doc/guides/nics/features/sfc_efx.ini +++ b/doc/guides/nics/features/sfc_efx.ini @@ -5,6 +5,7 @@ ; [Features] Link status = Y +Flow control = Y L3 checksum offload = P L4 checksum offload = P Basic stats = Y diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst index cbb51de..1cfed6a 100644 --- a/doc/guides/nics/sfc_efx.rst +++ b/doc/guides/nics/sfc_efx.rst @@ -50,6 +50,8 @@ SFC EFX PMD has support for: - Port hardware statistics +- Basic flow control + Non-supported Features ---------------------- diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c index d5ae1a0..eff648b 100644 --- a/drivers/net/sfc/sfc_ethdev.c +++ b/drivers/net/sfc/sfc_ethdev.c @@ -453,6 +453,102 @@ sfc_xstats_get_names(struct rte_eth_dev *dev, return nstats; } +static int +sfc_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) +{ + struct sfc_adapter *sa = dev->data->dev_private; + unsigned int wanted_fc, link_fc; + + memset(fc_conf, 0, sizeof(*fc_conf)); + + sfc_adapter_lock(sa); + + if (sa->state == SFC_ADAPTER_STARTED) + efx_mac_fcntl_get(sa->nic, &wanted_fc, &link_fc); + else + link_fc = sa->port.flow_ctrl; + + switch (link_fc) { + case 0: + fc_conf->mode = RTE_FC_NONE; + break; + case EFX_FCNTL_RESPOND: + fc_conf->mode = RTE_FC_RX_PAUSE; + break; + case EFX_FCNTL_GENERATE: + fc_conf->mode = RTE_FC_TX_PAUSE; + break; + case (EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE): + fc_conf->mode = RTE_FC_FULL; + break; + default: + sfc_err(sa, "%s: unexpected flow control value %#x", + __func__, link_fc); + } + + fc_conf->autoneg = sa->port.flow_ctrl_autoneg; + + sfc_adapter_unlock(sa); + + return 0; +} + +static int +sfc_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) +{ + struct sfc_adapter *sa = dev->data->dev_private; + struct sfc_port *port = &sa->port; + unsigned int fcntl; + int rc; + + if (fc_conf->high_water != 0 || fc_conf->low_water != 0 || + fc_conf->pause_time != 0 || fc_conf->send_xon != 0 || + fc_conf->mac_ctrl_frame_fwd != 0) { + sfc_err(sa, "unsupported flow control settings specified"); + rc = EINVAL; + goto fail_inval; + } + + switch (fc_conf->mode) { + case RTE_FC_NONE: + fcntl = 0; + break; + case RTE_FC_RX_PAUSE: + fcntl = EFX_FCNTL_RESPOND; + break; + case RTE_FC_TX_PAUSE: + fcntl = EFX_FCNTL_GENERATE; + break; + case RTE_FC_FULL: + fcntl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE; + break; + default: + rc = EINVAL; + goto fail_inval; + } + + sfc_adapter_lock(sa); + + if (sa->state == SFC_ADAPTER_STARTED) { + rc = efx_mac_fcntl_set(sa->nic, fcntl, fc_conf->autoneg); + if (rc != 0) + goto fail_mac_fcntl_set; + } + + port->flow_ctrl = fcntl; + port->flow_ctrl_autoneg = fc_conf->autoneg; + + sfc_adapter_unlock(sa); + + return 0; + +fail_mac_fcntl_set: + sfc_adapter_unlock(sa); +fail_inval: + SFC_ASSERT(rc > 0); + return -rc; +} + static const struct eth_dev_ops sfc_eth_dev_ops = { .dev_configure = sfc_dev_configure, .dev_start = sfc_dev_start, @@ -467,6 +563,8 @@ static const struct eth_dev_ops sfc_eth_dev_ops = { .rx_queue_release = sfc_rx_queue_release, .tx_queue_setup = sfc_tx_queue_setup, .tx_queue_release = sfc_tx_queue_release, + .flow_ctrl_get = sfc_flow_ctrl_get, + .flow_ctrl_set = sfc_flow_ctrl_set, }; static int diff --git a/drivers/net/sfc/sfc_port.c b/drivers/net/sfc/sfc_port.c index d8ff097..ccc0854 100644 --- a/drivers/net/sfc/sfc_port.c +++ b/drivers/net/sfc/sfc_port.c @@ -79,6 +79,13 @@ sfc_port_start(struct sfc_adapter *sa) if (rc != 0) goto fail_port_init; + sfc_log_init(sa, "set flow control to %#x autoneg=%u", + port->flow_ctrl, port->flow_ctrl_autoneg); + rc = efx_mac_fcntl_set(sa->nic, port->flow_ctrl, + port->flow_ctrl_autoneg); + if (rc != 0) + goto fail_mac_fcntl_set; + sfc_log_init(sa, "set MAC PDU %u", (unsigned int)port->pdu); rc = efx_mac_pdu_set(sa->nic, port->pdu); if (rc != 0) @@ -124,6 +131,7 @@ sfc_port_start(struct sfc_adapter *sa) fail_mac_filter_set: fail_mac_addr_set: fail_mac_pdu_set: +fail_mac_fcntl_set: efx_port_fini(sa->nic); fail_port_init: