Date: Mon, 5 Apr 2021 18:21:04 GMT From: Eric Joyner <erj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 20a52706c814 - main - ixl(4): Add tunable to override Flow Control settings Message-ID: <202104051821.135IL4hE007904@gitrepo.freebsd.org>
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The branch main has been updated by erj: URL: https://cgit.FreeBSD.org/src/commit/?id=20a52706c814ccfd91c65586404abd2a1563a330 commit 20a52706c814ccfd91c65586404abd2a1563a330 Author: Krzysztof Galazka <krzysztof.galazka@intel.com> AuthorDate: 2021-04-05 18:08:33 +0000 Commit: Eric Joyner <erj@FreeBSD.org> CommitDate: 2021-04-05 18:17:55 +0000 ixl(4): Add tunable to override Flow Control settings Add flow_control to hw.ixl tunables tree to let override initial flow control configuration for all interfaces. Keep using configuration set by NVM by default. Reviewed by: erj@, gallatin@ Tested by: gowtham.kumar.ks_intel.com MFC after: 1 week Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D29338 --- sys/dev/ixl/if_ixl.c | 19 +++++++++++++++++++ sys/dev/ixl/ixl_pf_iflib.c | 2 +- sys/dev/ixl/ixl_pf_main.c | 40 +++++++++++++++++++++++----------------- 3 files changed, 43 insertions(+), 18 deletions(-) diff --git a/sys/dev/ixl/if_ixl.c b/sys/dev/ixl/if_ixl.c index c700af889cf1..3b49da5d76b9 100644 --- a/sys/dev/ixl/if_ixl.c +++ b/sys/dev/ixl/if_ixl.c @@ -304,6 +304,10 @@ TUNABLE_INT("hw.ixl.tx_itr", &ixl_tx_itr); SYSCTL_INT(_hw_ixl, OID_AUTO, tx_itr, CTLFLAG_RDTUN, &ixl_tx_itr, 0, "TX Interrupt Rate"); +static int ixl_flow_control = -1; +SYSCTL_INT(_hw_ixl, OID_AUTO, flow_control, CTLFLAG_RDTUN, + &ixl_flow_control, 0, "Initial Flow Control setting"); + #ifdef IXL_IW int ixl_enable_iwarp = 0; TUNABLE_INT("hw.ixl.enable_iwarp", &ixl_enable_iwarp); @@ -1892,5 +1896,20 @@ ixl_save_pf_tunables(struct ixl_pf *pf) pf->rx_itr = IXL_ITR_8K; } else pf->rx_itr = ixl_rx_itr; + + pf->fc = -1; + if (ixl_flow_control != -1) { + if (ixl_flow_control < 0 || ixl_flow_control > 3) { + device_printf(dev, + "Invalid flow_control value of %d set!\n", + ixl_flow_control); + device_printf(dev, + "flow_control must be between %d and %d, " + "inclusive\n", 0, 3); + device_printf(dev, + "Using default configuration instead\n"); + } else + pf->fc = ixl_flow_control; + } } diff --git a/sys/dev/ixl/ixl_pf_iflib.c b/sys/dev/ixl/ixl_pf_iflib.c index 23d9f30299a9..68a174889c41 100644 --- a/sys/dev/ixl/ixl_pf_iflib.c +++ b/sys/dev/ixl/ixl_pf_iflib.c @@ -1094,7 +1094,7 @@ ixl_sysctl_set_flowcntl(SYSCTL_HANDLER_ARGS) aq_error = i40e_set_fc(hw, &fc_aq_err, TRUE); if (aq_error) { device_printf(dev, - "%s: Error setting new fc mode %d; fc_err %#x\n", + "%s: Error setting Flow Control mode %d; fc_err %#x\n", __func__, aq_error, fc_aq_err); return (EIO); } diff --git a/sys/dev/ixl/ixl_pf_main.c b/sys/dev/ixl/ixl_pf_main.c index b546701608f1..896da955843a 100644 --- a/sys/dev/ixl/ixl_pf_main.c +++ b/sys/dev/ixl/ixl_pf_main.c @@ -3169,27 +3169,28 @@ ixl_set_link(struct ixl_pf *pf, bool enable) config.phy_type = 0; config.phy_type_ext = 0; + config.abilities &= ~(I40E_AQ_PHY_FLAG_PAUSE_TX | + I40E_AQ_PHY_FLAG_PAUSE_RX); + + switch (pf->fc) { + case I40E_FC_FULL: + config.abilities |= I40E_AQ_PHY_FLAG_PAUSE_TX | + I40E_AQ_PHY_FLAG_PAUSE_RX; + break; + case I40E_FC_RX_PAUSE: + config.abilities |= I40E_AQ_PHY_FLAG_PAUSE_RX; + break; + case I40E_FC_TX_PAUSE: + config.abilities |= I40E_AQ_PHY_FLAG_PAUSE_TX; + break; + default: + break; + } + if (enable) { config.phy_type = phy_type; config.phy_type_ext = phy_type_ext; - config.abilities &= ~(I40E_AQ_PHY_FLAG_PAUSE_TX | - I40E_AQ_PHY_FLAG_PAUSE_RX); - - switch (pf->fc) { - case I40E_FC_FULL: - config.abilities |= I40E_AQ_PHY_FLAG_PAUSE_TX | - I40E_AQ_PHY_FLAG_PAUSE_RX; - break; - case I40E_FC_RX_PAUSE: - config.abilities |= I40E_AQ_PHY_FLAG_PAUSE_RX; - break; - case I40E_FC_TX_PAUSE: - config.abilities |= I40E_AQ_PHY_FLAG_PAUSE_TX; - break; - default: - break; - } } aq_error = i40e_aq_set_phy_config(hw, &config, NULL); @@ -4594,6 +4595,11 @@ ixl_attach_get_link_status(struct ixl_pf *pf) /* Determine link state */ hw->phy.get_link_info = TRUE; i40e_get_link_status(hw, &pf->link_up); + + /* Flow Control mode not set by user, read current FW settings */ + if (pf->fc == -1) + pf->fc = hw->fc.current_mode; + return (0); }
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