From owner-dev-commits-src-all@freebsd.org Wed Sep 15 22:33:02 2021 Return-Path: Delivered-To: dev-commits-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C2D5866F88C; Wed, 15 Sep 2021 22:33:02 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4H8w3257Ttz4ntk; Wed, 15 Sep 2021 22:33:02 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 8FC04163CE; Wed, 15 Sep 2021 22:33:02 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 18FMX2mL004741; Wed, 15 Sep 2021 22:33:02 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 18FMX2qw004740; Wed, 15 Sep 2021 22:33:02 GMT (envelope-from git) Date: Wed, 15 Sep 2021 22:33:02 GMT Message-Id: <202109152233.18FMX2qw004740@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Kevin Bowling Subject: git: 2796f7cab107 - main - e1000: Fix up HW vlan ops MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kbowling X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 2796f7cab10785ef40efbba97ef67ab319c96e9c Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Sep 2021 22:33:02 -0000 The branch main has been updated by kbowling (ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=2796f7cab10785ef40efbba97ef67ab319c96e9c commit 2796f7cab10785ef40efbba97ef67ab319c96e9c Author: Kevin Bowling AuthorDate: 2021-09-15 14:47:19 +0000 Commit: Kevin Bowling CommitDate: 2021-09-15 15:03:01 +0000 e1000: Fix up HW vlan ops * Don't reset the entire adapter for vlan changes, fix up the problems * Add some functions for vlan filter (vfta) manipulation * Don't muck with the vfta if we aren't doing HW vlan filtering * Disable interrupts when manipulating vfta on lem(4)-class NICs * On the I350 there is a specification update (2.4.20) in which the suggested workaround is to write to the vfta 10 times (if at first you don't succeed, try, try again). Our shared code has the goods, use it * Increase a VF's frame receive size in the case of vlans From the referenced PR, this reduced vlan configuration from minutes to seconds with hundreds or thousands of vlans and prevents wedging the adapter with needless adapter reinitialization for each vlan ID. PR: 230996 Reviewed by: markj Tested by: Ozkan KIRIK MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D30002 --- sys/dev/e1000/if_em.c | 166 ++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 126 insertions(+), 40 deletions(-) diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index 6e3a8f73190f..7900e550c55f 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -297,6 +297,11 @@ static void em_if_debug(if_ctx_t ctx); static void em_update_stats_counters(struct adapter *); static void em_add_hw_stats(struct adapter *adapter); static int em_if_set_promisc(if_ctx_t ctx, int flags); +static bool em_if_vlan_filter_capable(struct adapter *); +static bool em_if_vlan_filter_used(struct adapter *); +static void em_if_vlan_filter_enable(struct adapter *); +static void em_if_vlan_filter_disable(struct adapter *); +static void em_if_vlan_filter_write(struct adapter *); static void em_setup_vlan_hw_support(struct adapter *); static int em_sysctl_nvm_info(SYSCTL_HANDLER_ARGS); static void em_print_nvm_info(struct adapter *); @@ -906,6 +911,9 @@ em_if_attach_pre(if_ctx_t ctx) scctx->isc_capabilities = scctx->isc_capenable = LEM_CAPS; if (hw->mac.type < e1000_82543) scctx->isc_capenable &= ~(IFCAP_HWCSUM|IFCAP_VLAN_HWCSUM); + /* 82541ER doesn't do HW tagging */ + if (hw->device_id == E1000_DEV_ID_82541ER || hw->device_id == E1000_DEV_ID_82541ER_LOM) + scctx->isc_capenable &= ~IFCAP_VLAN_HWTAGGING; /* INTx only */ scctx->isc_msix_bar = 0; } @@ -1335,23 +1343,8 @@ em_if_init(if_ctx_t ctx) adapter->rx_mbuf_sz = iflib_get_rx_mbuf_sz(ctx); em_initialize_receive_unit(ctx); - /* Use real VLAN Filter support? */ - if (if_getcapenable(ifp) & IFCAP_VLAN_HWTAGGING) { - if (if_getcapenable(ifp) & IFCAP_VLAN_HWFILTER) - /* Use real VLAN Filter support */ - em_setup_vlan_hw_support(adapter); - else { - u32 ctrl; - ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); - ctrl |= E1000_CTRL_VME; - E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); - } - } else { - u32 ctrl; - ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); - ctrl &= ~E1000_CTRL_VME; - E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); - } + /* Set up VLAN support and filter */ + em_setup_vlan_hw_support(adapter); /* Don't lose promiscuous settings */ em_if_set_promisc(ctx, if_getflags(ifp)); @@ -1670,14 +1663,19 @@ em_if_set_promisc(if_ctx_t ctx, int flags) if (flags & IFF_PROMISC) { reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); + em_if_vlan_filter_disable(adapter); /* Turn this on if you want to see bad packets */ if (em_debug_sbp) reg_rctl |= E1000_RCTL_SBP; E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); - } else if (flags & IFF_ALLMULTI) { - reg_rctl |= E1000_RCTL_MPE; - reg_rctl &= ~E1000_RCTL_UPE; - E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); + } else { + if (flags & IFF_ALLMULTI) { + reg_rctl |= E1000_RCTL_MPE; + reg_rctl &= ~E1000_RCTL_UPE; + E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); + } + if (em_if_vlan_filter_used(adapter)) + em_if_vlan_filter_enable(adapter); } return (0); } @@ -3323,7 +3321,11 @@ em_initialize_receive_unit(if_ctx_t ctx) /* are we on a vlan? */ if (ifp->if_vlantrunk != NULL) psize += VLAN_TAG_SIZE; - E1000_WRITE_REG(hw, E1000_RLPML, psize); + + if (adapter->vf_ifp) + e1000_rlpml_set_vf(hw, pszie); + else + E1000_WRITE_REG(hw, E1000_RLPML, psize); } /* Set maximum packet buffer len */ @@ -3420,6 +3422,7 @@ em_if_vlan_register(if_ctx_t ctx, u16 vtag) bit = vtag & 0x1F; adapter->shadow_vfta[index] |= (1 << bit); ++adapter->num_vlans; + em_if_vlan_filter_write(adapter); } static void @@ -3432,41 +3435,121 @@ em_if_vlan_unregister(if_ctx_t ctx, u16 vtag) bit = vtag & 0x1F; adapter->shadow_vfta[index] &= ~(1 << bit); --adapter->num_vlans; + em_if_vlan_filter_write(adapter); +} + +static bool +em_if_vlan_filter_capable(struct adapter *adapter) +{ + if_softc_ctx_t scctx = adapter->shared; + + if ((scctx->isc_capenable & IFCAP_VLAN_HWFILTER) && + !em_disable_crc_stripping) + return (true); + + return (false); +} + +static bool +em_if_vlan_filter_used(struct adapter *adapter) +{ + if (!em_if_vlan_filter_capable(adapter)) + return (false); + + for (int i = 0; i < EM_VFTA_SIZE; i++) + if (adapter->shadow_vfta[i] != 0) + return (true); + + return (false); +} + +static void +em_if_vlan_filter_enable(struct adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 reg; + + reg = E1000_READ_REG(hw, E1000_RCTL); + reg &= ~E1000_RCTL_CFIEN; + reg |= E1000_RCTL_VFE; + E1000_WRITE_REG(hw, E1000_RCTL, reg); +} + +static void +em_if_vlan_filter_disable(struct adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 reg; + + reg = E1000_READ_REG(hw, E1000_RCTL); + reg &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); + E1000_WRITE_REG(hw, E1000_RCTL, reg); +} + +static void +em_if_vlan_filter_write(struct adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + + if (adapter->vf_ifp) + return; + + /* Disable interrupts for lem-class devices during the filter change */ + if (hw->mac.type < em_mac_min) + em_if_intr_disable(adapter->ctx); + + for (int i = 0; i < EM_VFTA_SIZE; i++) + if (adapter->shadow_vfta[i] != 0) { + /* XXXKB: incomplete VF support, we return early above */ + if (adapter->vf_ifp) + e1000_vfta_set_vf(hw, adapter->shadow_vfta[i], TRUE); + else + e1000_write_vfta(hw, i, adapter->shadow_vfta[i]); + } + + /* Re-enable interrupts for lem-class devices */ + if (hw->mac.type < em_mac_min) + em_if_intr_enable(adapter->ctx); } static void em_setup_vlan_hw_support(struct adapter *adapter) { + if_softc_ctx_t scctx = adapter->shared; struct e1000_hw *hw = &adapter->hw; u32 reg; - /* - * We get here thru init_locked, meaning - * a soft reset, this has already cleared - * the VFTA and other state, so if there - * have been no vlan's registered do nothing. + /* XXXKB: Return early if we are a VF until VF decap and filter management + * is ready and tested. */ - if (adapter->num_vlans == 0) + if (adapter->vf_ifp) + return; + + if (scctx->isc_capenable & IFCAP_VLAN_HWTAGGING && + !em_disable_crc_stripping) { + reg = E1000_READ_REG(hw, E1000_CTRL); + reg |= E1000_CTRL_VME; + E1000_WRITE_REG(hw, E1000_CTRL, reg); + } else { + reg = E1000_READ_REG(hw, E1000_CTRL); + reg &= ~E1000_CTRL_VME; + E1000_WRITE_REG(hw, E1000_CTRL, reg); + } + + /* If we aren't doing HW filtering, we're done */ + if (!em_if_vlan_filter_capable(adapter)) { + em_if_vlan_filter_disable(adapter); return; + } /* * A soft reset zero's out the VFTA, so * we need to repopulate it now. */ - for (int i = 0; i < EM_VFTA_SIZE; i++) - if (adapter->shadow_vfta[i] != 0) - E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, - i, adapter->shadow_vfta[i]); - - reg = E1000_READ_REG(hw, E1000_CTRL); - reg |= E1000_CTRL_VME; - E1000_WRITE_REG(hw, E1000_CTRL, reg); + em_if_vlan_filter_write(adapter); /* Enable the Filter Table */ - reg = E1000_READ_REG(hw, E1000_RCTL); - reg &= ~E1000_RCTL_CFIEN; - reg |= E1000_RCTL_VFE; - E1000_WRITE_REG(hw, E1000_RCTL, reg); + em_if_vlan_filter_enable(adapter); } static void @@ -3481,6 +3564,7 @@ em_if_intr_enable(if_ctx_t ctx) ims_mask |= adapter->ims; } E1000_WRITE_REG(hw, E1000_IMS, ims_mask); + E1000_WRITE_FLUSH(hw); } static void @@ -3492,6 +3576,7 @@ em_if_intr_disable(if_ctx_t ctx) if (adapter->intr_type == IFLIB_INTR_MSIX) E1000_WRITE_REG(hw, EM_EIAC, 0); E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); + E1000_WRITE_FLUSH(hw); } static void @@ -4101,6 +4186,7 @@ em_if_needs_restart(if_ctx_t ctx __unused, enum iflib_restart_event event) { switch (event) { case IFLIB_RESTART_VLAN_CONFIG: + return (false); default: return (true); }