diff --git a/sys/dev/iavf/iavf_lib.c b/sys/dev/iavf/iavf_lib.c index 9b4ec425f1a9..e2b01b518985 100644 --- a/sys/dev/iavf/iavf_lib.c +++ b/sys/dev/iavf/iavf_lib.c @@ -1,1531 +1,1566 @@ /* SPDX-License-Identifier: BSD-3-Clause */ /* Copyright (c) 2021, Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*$FreeBSD$*/ /** * @file iavf_lib.c * @brief library code common to both legacy and iflib * * Contains functions common to the iflib and legacy drivers. Includes * hardware initialization and control functions, as well as sysctl handlers * for the sysctls which are shared between the legacy and iflib drivers. */ #include "iavf_iflib.h" #include "iavf_vc_common.h" static void iavf_init_hw(struct iavf_hw *hw, device_t dev); static u_int iavf_mc_filter_apply(void *arg, struct sockaddr_dl *sdl, u_int cnt); +static bool iavf_zero_mac(const uint8_t *addr); +static u_int iavf_llmaddr_count(if_t ifp); + +/** + * iavf_zero_mac - Check if MAC address is 0 or not + * + * Returns true if MAC address is all 0's + */ +static bool +iavf_zero_mac(const uint8_t *addr) +{ + uint8_t zero[ETHER_ADDR_LEN] = {0, 0, 0, 0, 0, 0}; + + return (cmp_etheraddr(addr, zero)); +} + +/** + * iavf_llmaddr_count - Return count of multicast MAC addresses in ifp + * + * Similar to "if_llmaddr_count()" found in newer FreeBSD versions + */ +static u_int +iavf_llmaddr_count(if_t ifp) +{ + struct ifmultiaddr *ifma; + int count = 0; + + if_maddr_rlock(ifp); + CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) + if (ifma->ifma_addr->sa_family == AF_LINK) + count++; + if_maddr_runlock(ifp); + + return (count); +} /** * iavf_msec_pause - Pause for at least the specified number of milliseconds * @msecs: number of milliseconds to pause for * * Pause execution of the current thread for a specified number of * milliseconds. Used to enforce minimum delay times when waiting for various * hardware events. */ void iavf_msec_pause(int msecs) { pause("iavf_msec_pause", MSEC_2_TICKS(msecs)); } /** * iavf_get_default_rss_key - Get the default RSS key for this driver * @key: output parameter to store the key in * * Copies the driver's default RSS key into the provided key variable. * * @pre assumes that key is not NULL and has at least IAVF_RSS_KEY_SIZE * storage space. */ void iavf_get_default_rss_key(u32 *key) { MPASS(key != NULL); u32 rss_seed[IAVF_RSS_KEY_SIZE_REG] = {0x41b01687, 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377, 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d, 0xcd15a2c1, 0x0, 0x0, 0x0}; bcopy(rss_seed, key, IAVF_RSS_KEY_SIZE); } /** * iavf_allocate_pci_resources_common - Allocate PCI resources * @sc: the private device softc pointer * * @pre sc->dev is set * * Allocates the common PCI resources used by the driver. * * @returns zero on success, or an error code on failure. */ int iavf_allocate_pci_resources_common(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; device_t dev = sc->dev; int rid; /* Map PCI BAR0 */ rid = PCIR_BAR(0); sc->pci_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (!(sc->pci_mem)) { device_printf(dev, "Unable to allocate bus resource: PCI memory\n"); return (ENXIO); } iavf_init_hw(hw, dev); /* Save off register access information */ sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->pci_mem); sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->pci_mem); sc->osdep.mem_bus_space_size = rman_get_size(sc->pci_mem); sc->osdep.flush_reg = IAVF_VFGEN_RSTAT; sc->osdep.dev = dev; sc->hw.hw_addr = (u8 *)&sc->osdep.mem_bus_space_handle; sc->hw.back = &sc->osdep; return (0); } /** * iavf_init_hw - Initialize the device HW * @hw: device hardware structure * @dev: the stack device_t pointer * * Attach helper function. Gathers information about the (virtual) hardware * for use elsewhere in the driver. */ static void iavf_init_hw(struct iavf_hw *hw, device_t dev) { /* Save off the information about this board */ hw->vendor_id = pci_get_vendor(dev); hw->device_id = pci_get_device(dev); hw->revision_id = pci_read_config(dev, PCIR_REVID, 1); hw->subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2); hw->subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2); hw->bus.device = pci_get_slot(dev); hw->bus.func = pci_get_function(dev); } /** * iavf_sysctl_current_speed - Sysctl to display the current device speed * @oidp: syctl oid pointer * @arg1: pointer to the device softc typecasted to void * * @arg2: unused sysctl argument * @req: sysctl request structure * * Reads the current speed reported from the physical device into a string for * display by the current_speed sysctl. * * @returns zero or an error code on failure. */ int iavf_sysctl_current_speed(SYSCTL_HANDLER_ARGS) { struct iavf_sc *sc = (struct iavf_sc *)arg1; int error = 0; UNREFERENCED_PARAMETER(arg2); if (iavf_driver_is_detaching(sc)) return (ESHUTDOWN); if (IAVF_CAP_ADV_LINK_SPEED(sc)) error = sysctl_handle_string(oidp, __DECONST(char *, iavf_ext_speed_to_str(iavf_adv_speed_to_ext_speed(sc->link_speed_adv))), 8, req); else error = sysctl_handle_string(oidp, __DECONST(char *, iavf_vc_speed_to_string(sc->link_speed)), 8, req); return (error); } /** * iavf_reset_complete - Wait for a device reset to complete * @hw: pointer to the hardware structure * * Reads the reset registers and waits until they indicate that a device reset * is complete. * * @pre this function may call pause() and must not be called from a context * that cannot sleep. * * @returns zero on success, or EBUSY if it times out waiting for reset. */ int iavf_reset_complete(struct iavf_hw *hw) { u32 reg; /* Wait up to ~10 seconds */ for (int i = 0; i < 100; i++) { reg = rd32(hw, IAVF_VFGEN_RSTAT) & IAVF_VFGEN_RSTAT_VFR_STATE_MASK; if ((reg == VIRTCHNL_VFR_VFACTIVE) || (reg == VIRTCHNL_VFR_COMPLETED)) return (0); iavf_msec_pause(100); } return (EBUSY); } /** * iavf_setup_vc - Setup virtchnl communication * @sc: device private softc * * iavf_attach() helper function. Initializes the admin queue and attempts to * establish contact with the PF by retrying the initial "API version" message * several times or until the PF responds. * * @returns zero on success, or an error code on failure. */ int iavf_setup_vc(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; device_t dev = sc->dev; int error = 0, ret_error = 0, asq_retries = 0; bool send_api_ver_retried = 0; /* Need to set these AQ parameters before initializing AQ */ hw->aq.num_arq_entries = IAVF_AQ_LEN; hw->aq.num_asq_entries = IAVF_AQ_LEN; hw->aq.arq_buf_size = IAVF_AQ_BUF_SZ; hw->aq.asq_buf_size = IAVF_AQ_BUF_SZ; for (int i = 0; i < IAVF_AQ_MAX_ERR; i++) { /* Initialize admin queue */ error = iavf_init_adminq(hw); if (error) { device_printf(dev, "%s: init_adminq failed: %d\n", __func__, error); ret_error = 1; continue; } iavf_dbg_init(sc, "Initialized Admin Queue; starting" " send_api_ver attempt %d", i+1); retry_send: /* Send VF's API version */ error = iavf_send_api_ver(sc); if (error) { iavf_shutdown_adminq(hw); ret_error = 2; device_printf(dev, "%s: unable to send api" " version to PF on attempt %d, error %d\n", __func__, i+1, error); } asq_retries = 0; while (!iavf_asq_done(hw)) { if (++asq_retries > IAVF_AQ_MAX_ERR) { iavf_shutdown_adminq(hw); device_printf(dev, "Admin Queue timeout " "(waiting for send_api_ver), %d more tries...\n", IAVF_AQ_MAX_ERR - (i + 1)); ret_error = 3; break; } iavf_msec_pause(10); } if (asq_retries > IAVF_AQ_MAX_ERR) continue; iavf_dbg_init(sc, "Sent API version message to PF"); /* Verify that the VF accepts the PF's API version */ error = iavf_verify_api_ver(sc); if (error == ETIMEDOUT) { if (!send_api_ver_retried) { /* Resend message, one more time */ send_api_ver_retried = true; device_printf(dev, "%s: Timeout while verifying API version on first" " try!\n", __func__); goto retry_send; } else { device_printf(dev, "%s: Timeout while verifying API version on second" " try!\n", __func__); ret_error = 4; break; } } if (error) { device_printf(dev, "%s: Unable to verify API version," " error %d\n", __func__, error); ret_error = 5; } break; } if (ret_error >= 4) iavf_shutdown_adminq(hw); return (ret_error); } /** * iavf_reset - Requests a VF reset from the PF. * @sc: device private softc * * @pre Requires the VF's Admin Queue to be initialized. * @returns zero on success, or an error code on failure. */ int iavf_reset(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; device_t dev = sc->dev; int error = 0; /* Ask the PF to reset us if we are initiating */ if (!iavf_test_state(&sc->state, IAVF_STATE_RESET_PENDING)) iavf_request_reset(sc); iavf_msec_pause(100); error = iavf_reset_complete(hw); if (error) { device_printf(dev, "%s: VF reset failed\n", __func__); return (error); } pci_enable_busmaster(dev); error = iavf_shutdown_adminq(hw); if (error) { device_printf(dev, "%s: shutdown_adminq failed: %d\n", __func__, error); return (error); } error = iavf_init_adminq(hw); if (error) { device_printf(dev, "%s: init_adminq failed: %d\n", __func__, error); return (error); } /* IFLIB: This is called only in the iflib driver */ iavf_enable_adminq_irq(hw); return (0); } /** * iavf_enable_admin_irq - Enable the administrative interrupt * @hw: pointer to the hardware structure * * Writes to registers to enable the administrative interrupt cause, in order * to handle non-queue related interrupt events. */ void iavf_enable_adminq_irq(struct iavf_hw *hw) { wr32(hw, IAVF_VFINT_DYN_CTL01, IAVF_VFINT_DYN_CTL01_INTENA_MASK | IAVF_VFINT_DYN_CTL01_CLEARPBA_MASK | IAVF_VFINT_DYN_CTL01_ITR_INDX_MASK); wr32(hw, IAVF_VFINT_ICR0_ENA1, IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK); /* flush */ rd32(hw, IAVF_VFGEN_RSTAT); } /** * iavf_disable_admin_irq - Disable the administrative interrupt cause * @hw: pointer to the hardware structure * * Writes to registers to disable the administrative interrupt cause. */ void iavf_disable_adminq_irq(struct iavf_hw *hw) { wr32(hw, IAVF_VFINT_DYN_CTL01, 0); wr32(hw, IAVF_VFINT_ICR0_ENA1, 0); iavf_flush(hw); } /** * iavf_vf_config - Configure this VF over the virtchnl * @sc: device private softc * * iavf_attach() helper function. Asks the PF for this VF's configuration, and * saves the information if it receives it. * * @returns zero on success, or an error code on failure. */ int iavf_vf_config(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; device_t dev = sc->dev; int bufsz, error = 0, ret_error = 0; int asq_retries, retried = 0; retry_config: error = iavf_send_vf_config_msg(sc); if (error) { device_printf(dev, "%s: Unable to send VF config request, attempt %d," " error %d\n", __func__, retried + 1, error); ret_error = 2; } asq_retries = 0; while (!iavf_asq_done(hw)) { if (++asq_retries > IAVF_AQ_MAX_ERR) { device_printf(dev, "%s: Admin Queue timeout " "(waiting for send_vf_config_msg), attempt %d\n", __func__, retried + 1); ret_error = 3; goto fail; } iavf_msec_pause(10); } iavf_dbg_init(sc, "Sent VF config message to PF, attempt %d\n", retried + 1); if (!sc->vf_res) { bufsz = sizeof(struct virtchnl_vf_resource) + (IAVF_MAX_VF_VSI * sizeof(struct virtchnl_vsi_resource)); sc->vf_res = (struct virtchnl_vf_resource *)malloc(bufsz, M_IAVF, M_NOWAIT); if (!sc->vf_res) { device_printf(dev, "%s: Unable to allocate memory for VF configuration" " message from PF on attempt %d\n", __func__, retried + 1); ret_error = 1; goto fail; } } /* Check for VF config response */ error = iavf_get_vf_config(sc); if (error == ETIMEDOUT) { /* The 1st time we timeout, send the configuration message again */ if (!retried) { retried++; goto retry_config; } device_printf(dev, "%s: iavf_get_vf_config() timed out waiting for a response\n", __func__); } if (error) { device_printf(dev, "%s: Unable to get VF configuration from PF after %d tries!\n", __func__, retried + 1); ret_error = 4; } goto done; fail: free(sc->vf_res, M_IAVF); done: return (ret_error); } /** * iavf_print_device_info - Print some device parameters at attach * @sc: device private softc * * Log a message about this virtual device's capabilities at attach time. */ void iavf_print_device_info(struct iavf_sc *sc) { device_t dev = sc->dev; device_printf(dev, "VSIs %d, QPs %d, MSI-X %d, RSS sizes: key %d lut %d\n", sc->vf_res->num_vsis, sc->vf_res->num_queue_pairs, sc->vf_res->max_vectors, sc->vf_res->rss_key_size, sc->vf_res->rss_lut_size); iavf_dbg_info(sc, "Capabilities=%b\n", sc->vf_res->vf_cap_flags, IAVF_PRINTF_VF_OFFLOAD_FLAGS); } /** * iavf_get_vsi_res_from_vf_res - Get VSI parameters and info for this VF * @sc: device private softc * * Get the VSI parameters and information from the general VF resource info * received by the physical device. * * @returns zero on success, or an error code on failure. */ int iavf_get_vsi_res_from_vf_res(struct iavf_sc *sc) { struct iavf_vsi *vsi = &sc->vsi; device_t dev = sc->dev; sc->vsi_res = NULL; for (int i = 0; i < sc->vf_res->num_vsis; i++) { /* XXX: We only use the first VSI we find */ if (sc->vf_res->vsi_res[i].vsi_type == IAVF_VSI_SRIOV) sc->vsi_res = &sc->vf_res->vsi_res[i]; } if (!sc->vsi_res) { device_printf(dev, "%s: no LAN VSI found\n", __func__); return (EIO); } vsi->id = sc->vsi_res->vsi_id; return (0); } /** * iavf_set_mac_addresses - Set the MAC address for this interface * @sc: device private softc * * Set the permanent MAC address field in the HW structure. If a MAC address * has not yet been set for this device by the physical function, generate one * randomly. */ void iavf_set_mac_addresses(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; device_t dev = sc->dev; u8 addr[ETHER_ADDR_LEN]; /* If no mac address was assigned just make a random one */ - if (ETHER_IS_ZERO(hw->mac.addr)) { + if (iavf_zero_mac(hw->mac.addr)) { arc4rand(&addr, sizeof(addr), 0); addr[0] &= 0xFE; addr[0] |= 0x02; memcpy(hw->mac.addr, addr, sizeof(addr)); device_printf(dev, "Generated random MAC address\n"); } memcpy(hw->mac.perm_addr, hw->mac.addr, ETHER_ADDR_LEN); } /** * iavf_init_filters - Initialize filter structures * @sc: device private softc * * Initialize the MAC and VLAN filter list heads. * * @remark this is intended to be called only once during the device attach * process. * * @pre Because it uses M_WAITOK, this function should only be called in * a context that is safe to sleep. */ void iavf_init_filters(struct iavf_sc *sc) { sc->mac_filters = (struct mac_list *)malloc(sizeof(struct iavf_mac_filter), M_IAVF, M_WAITOK | M_ZERO); SLIST_INIT(sc->mac_filters); sc->vlan_filters = (struct vlan_list *)malloc(sizeof(struct iavf_vlan_filter), M_IAVF, M_WAITOK | M_ZERO); SLIST_INIT(sc->vlan_filters); } /** * iavf_free_filters - Release filter lists * @sc: device private softc * * Free the MAC and VLAN filter lists. * * @remark this is intended to be called only once during the device detach * process. */ void iavf_free_filters(struct iavf_sc *sc) { struct iavf_mac_filter *f; struct iavf_vlan_filter *v; while (!SLIST_EMPTY(sc->mac_filters)) { f = SLIST_FIRST(sc->mac_filters); SLIST_REMOVE_HEAD(sc->mac_filters, next); free(f, M_IAVF); } free(sc->mac_filters, M_IAVF); while (!SLIST_EMPTY(sc->vlan_filters)) { v = SLIST_FIRST(sc->vlan_filters); SLIST_REMOVE_HEAD(sc->vlan_filters, next); free(v, M_IAVF); } free(sc->vlan_filters, M_IAVF); } /** * iavf_add_device_sysctls_common - Initialize common device sysctls * @sc: device private softc * * Setup sysctls common to both the iflib and legacy drivers. */ void iavf_add_device_sysctls_common(struct iavf_sc *sc) { device_t dev = sc->dev; struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); struct sysctl_oid_list *ctx_list = SYSCTL_CHILDREN(device_get_sysctl_tree(dev)); SYSCTL_ADD_PROC(ctx, ctx_list, OID_AUTO, "current_speed", CTLTYPE_STRING | CTLFLAG_RD, sc, 0, iavf_sysctl_current_speed, "A", "Current Port Speed"); SYSCTL_ADD_PROC(ctx, ctx_list, OID_AUTO, "tx_itr", CTLTYPE_INT | CTLFLAG_RW, sc, 0, iavf_sysctl_tx_itr, "I", "Immediately set TX ITR value for all queues"); SYSCTL_ADD_PROC(ctx, ctx_list, OID_AUTO, "rx_itr", CTLTYPE_INT | CTLFLAG_RW, sc, 0, iavf_sysctl_rx_itr, "I", "Immediately set RX ITR value for all queues"); SYSCTL_ADD_UQUAD(ctx, ctx_list, OID_AUTO, "admin_irq", CTLFLAG_RD, &sc->admin_irq, "Admin Queue IRQ Handled"); } /** * iavf_add_debug_sysctls_common - Initialize common debug sysctls * @sc: device private softc * @debug_list: pionter to debug sysctl node * * Setup sysctls used for debugging the device driver into the debug sysctl * node. */ void iavf_add_debug_sysctls_common(struct iavf_sc *sc, struct sysctl_oid_list *debug_list) { device_t dev = sc->dev; struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); SYSCTL_ADD_UINT(ctx, debug_list, OID_AUTO, "shared_debug_mask", CTLFLAG_RW, &sc->hw.debug_mask, 0, "Shared code debug message level"); SYSCTL_ADD_UINT(ctx, debug_list, OID_AUTO, "core_debug_mask", CTLFLAG_RW, (unsigned int *)&sc->dbg_mask, 0, "Non-shared code debug message level"); SYSCTL_ADD_PROC(ctx, debug_list, OID_AUTO, "filter_list", CTLTYPE_STRING | CTLFLAG_RD, sc, 0, iavf_sysctl_sw_filter_list, "A", "SW Filter List"); } /** * iavf_sysctl_tx_itr - Sysctl to set the Tx ITR value * @oidp: sysctl oid pointer * @arg1: pointer to the device softc * @arg2: unused sysctl argument * @req: sysctl req pointer * * On read, returns the Tx ITR value for all of the VF queues. On write, * update the Tx ITR registers with the new Tx ITR value. * * @returns zero on success, or an error code on failure. */ int iavf_sysctl_tx_itr(SYSCTL_HANDLER_ARGS) { struct iavf_sc *sc = (struct iavf_sc *)arg1; device_t dev = sc->dev; int requested_tx_itr; int error = 0; UNREFERENCED_PARAMETER(arg2); if (iavf_driver_is_detaching(sc)) return (ESHUTDOWN); requested_tx_itr = sc->tx_itr; error = sysctl_handle_int(oidp, &requested_tx_itr, 0, req); if ((error) || (req->newptr == NULL)) return (error); if (requested_tx_itr < 0 || requested_tx_itr > IAVF_MAX_ITR) { device_printf(dev, "Invalid TX itr value; value must be between 0 and %d\n", IAVF_MAX_ITR); return (EINVAL); } sc->tx_itr = requested_tx_itr; iavf_configure_tx_itr(sc); return (error); } /** * iavf_sysctl_rx_itr - Sysctl to set the Rx ITR value * @oidp: sysctl oid pointer * @arg1: pointer to the device softc * @arg2: unused sysctl argument * @req: sysctl req pointer * * On read, returns the Rx ITR value for all of the VF queues. On write, * update the ITR registers with the new Rx ITR value. * * @returns zero on success, or an error code on failure. */ int iavf_sysctl_rx_itr(SYSCTL_HANDLER_ARGS) { struct iavf_sc *sc = (struct iavf_sc *)arg1; device_t dev = sc->dev; int requested_rx_itr; int error = 0; UNREFERENCED_PARAMETER(arg2); if (iavf_driver_is_detaching(sc)) return (ESHUTDOWN); requested_rx_itr = sc->rx_itr; error = sysctl_handle_int(oidp, &requested_rx_itr, 0, req); if ((error) || (req->newptr == NULL)) return (error); if (requested_rx_itr < 0 || requested_rx_itr > IAVF_MAX_ITR) { device_printf(dev, "Invalid RX itr value; value must be between 0 and %d\n", IAVF_MAX_ITR); return (EINVAL); } sc->rx_itr = requested_rx_itr; iavf_configure_rx_itr(sc); return (error); } /** * iavf_configure_tx_itr - Configure the Tx ITR * @sc: device private softc * * Updates the ITR registers with a new Tx ITR setting. */ void iavf_configure_tx_itr(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; struct iavf_vsi *vsi = &sc->vsi; struct iavf_tx_queue *que = vsi->tx_queues; vsi->tx_itr_setting = sc->tx_itr; for (int i = 0; i < IAVF_NTXQS(vsi); i++, que++) { struct tx_ring *txr = &que->txr; wr32(hw, IAVF_VFINT_ITRN1(IAVF_TX_ITR, i), vsi->tx_itr_setting); txr->itr = vsi->tx_itr_setting; txr->latency = IAVF_AVE_LATENCY; } } /** * iavf_configure_rx_itr - Configure the Rx ITR * @sc: device private softc * * Updates the ITR registers with a new Rx ITR setting. */ void iavf_configure_rx_itr(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; struct iavf_vsi *vsi = &sc->vsi; struct iavf_rx_queue *que = vsi->rx_queues; vsi->rx_itr_setting = sc->rx_itr; for (int i = 0; i < IAVF_NRXQS(vsi); i++, que++) { struct rx_ring *rxr = &que->rxr; wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR, i), vsi->rx_itr_setting); rxr->itr = vsi->rx_itr_setting; rxr->latency = IAVF_AVE_LATENCY; } } /** * iavf_create_debug_sysctl_tree - Create a debug sysctl node * @sc: device private softc * * Create a sysctl node meant to hold sysctls used to print debug information. * Mark it as CTLFLAG_SKIP so that these sysctls do not show up in the * "sysctl -a" output. * * @returns a pointer to the created sysctl node. */ struct sysctl_oid_list * iavf_create_debug_sysctl_tree(struct iavf_sc *sc) { device_t dev = sc->dev; struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); struct sysctl_oid_list *ctx_list = SYSCTL_CHILDREN(device_get_sysctl_tree(dev)); struct sysctl_oid *debug_node; debug_node = SYSCTL_ADD_NODE(ctx, ctx_list, OID_AUTO, "debug", CTLFLAG_RD | CTLFLAG_SKIP, NULL, "Debug Sysctls"); return (SYSCTL_CHILDREN(debug_node)); } /** * iavf_add_vsi_sysctls - Add sysctls for a given VSI * @dev: device pointer * @vsi: pointer to the VSI * @ctx: sysctl context to add to * @sysctl_name: name of the sysctl node (containing the VSI number) * * Adds a new sysctl node for holding specific sysctls for the given VSI. */ void iavf_add_vsi_sysctls(device_t dev, struct iavf_vsi *vsi, struct sysctl_ctx_list *ctx, const char *sysctl_name) { struct sysctl_oid *tree; struct sysctl_oid_list *child; struct sysctl_oid_list *vsi_list; tree = device_get_sysctl_tree(dev); child = SYSCTL_CHILDREN(tree); vsi->vsi_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, sysctl_name, CTLFLAG_RD, NULL, "VSI Number"); vsi_list = SYSCTL_CHILDREN(vsi->vsi_node); iavf_add_sysctls_eth_stats(ctx, vsi_list, &vsi->eth_stats); } /** * iavf_sysctl_sw_filter_list - Dump software filters * @oidp: sysctl oid pointer * @arg1: pointer to the device softc * @arg2: unused sysctl argument * @req: sysctl req pointer * * On read, generates a string which lists the MAC and VLAN filters added to * this virtual device. Useful for debugging to see whether or not the * expected filters have been configured by software. * * @returns zero on success, or an error code on failure. */ int iavf_sysctl_sw_filter_list(SYSCTL_HANDLER_ARGS) { struct iavf_sc *sc = (struct iavf_sc *)arg1; struct iavf_mac_filter *f; struct iavf_vlan_filter *v; device_t dev = sc->dev; int ftl_len, ftl_counter = 0, error = 0; struct sbuf *buf; UNREFERENCED_2PARAMETER(arg2, oidp); if (iavf_driver_is_detaching(sc)) return (ESHUTDOWN); buf = sbuf_new_for_sysctl(NULL, NULL, 128, req); if (!buf) { device_printf(dev, "Could not allocate sbuf for output.\n"); return (ENOMEM); } sbuf_printf(buf, "\n"); /* Print MAC filters */ sbuf_printf(buf, "MAC Filters:\n"); ftl_len = 0; SLIST_FOREACH(f, sc->mac_filters, next) ftl_len++; if (ftl_len < 1) sbuf_printf(buf, "(none)\n"); else { SLIST_FOREACH(f, sc->mac_filters, next) { sbuf_printf(buf, MAC_FORMAT ", flags %#06x\n", MAC_FORMAT_ARGS(f->macaddr), f->flags); } } /* Print VLAN filters */ sbuf_printf(buf, "VLAN Filters:\n"); ftl_len = 0; SLIST_FOREACH(v, sc->vlan_filters, next) ftl_len++; if (ftl_len < 1) sbuf_printf(buf, "(none)"); else { SLIST_FOREACH(v, sc->vlan_filters, next) { sbuf_printf(buf, "%d, flags %#06x", v->vlan, v->flags); /* don't print '\n' for last entry */ if (++ftl_counter != ftl_len) sbuf_printf(buf, "\n"); } } error = sbuf_finish(buf); if (error) device_printf(dev, "Error finishing sbuf: %d\n", error); sbuf_delete(buf); return (error); } /** * iavf_media_status_common - Get media status for this device * @sc: device softc pointer * @ifmr: ifmedia request structure * * Report the media status for this device into the given ifmr structure. */ void iavf_media_status_common(struct iavf_sc *sc, struct ifmediareq *ifmr) { enum iavf_ext_link_speed ext_speed; iavf_update_link_status(sc); ifmr->ifm_status = IFM_AVALID; ifmr->ifm_active = IFM_ETHER; if (!sc->link_up) return; ifmr->ifm_status |= IFM_ACTIVE; /* Hardware is always full-duplex */ ifmr->ifm_active |= IFM_FDX; /* Based on the link speed reported by the PF over the AdminQ, choose a * PHY type to report. This isn't 100% correct since we don't really * know the underlying PHY type of the PF, but at least we can report * a valid link speed... */ if (IAVF_CAP_ADV_LINK_SPEED(sc)) ext_speed = iavf_adv_speed_to_ext_speed(sc->link_speed_adv); else ext_speed = iavf_vc_speed_to_ext_speed(sc->link_speed); ifmr->ifm_active |= iavf_ext_speed_to_ifmedia(ext_speed); } /** * iavf_media_change_common - Change the media type for this device * @ifp: ifnet structure * * @returns ENODEV because changing the media and speed is not supported. */ int iavf_media_change_common(struct ifnet *ifp) { if_printf(ifp, "Changing speed is not supported\n"); return (ENODEV); } /** * iavf_set_initial_baudrate - Set the initial device baudrate * @ifp: ifnet structure * * Set the baudrate for this ifnet structure to the expected initial value of * 40Gbps. This maybe updated to a lower baudrate after the physical function * reports speed to us over the virtchnl interface. */ void iavf_set_initial_baudrate(struct ifnet *ifp) { #if __FreeBSD_version >= 1100000 if_setbaudrate(ifp, IF_Gbps(40)); #else if_initbaudrate(ifp, IF_Gbps(40)); #endif } /** * iavf_add_sysctls_eth_stats - Add ethernet statistics sysctls * @ctx: the sysctl ctx to add to * @child: the node to add the sysctls to * @eth_stats: ethernet stats structure * * Creates sysctls that report the values of the provided ethernet stats * structure. */ void iavf_add_sysctls_eth_stats(struct sysctl_ctx_list *ctx, struct sysctl_oid_list *child, struct iavf_eth_stats *eth_stats) { struct iavf_sysctl_info ctls[] = { {ð_stats->rx_bytes, "good_octets_rcvd", "Good Octets Received"}, {ð_stats->rx_unicast, "ucast_pkts_rcvd", "Unicast Packets Received"}, {ð_stats->rx_multicast, "mcast_pkts_rcvd", "Multicast Packets Received"}, {ð_stats->rx_broadcast, "bcast_pkts_rcvd", "Broadcast Packets Received"}, {ð_stats->rx_discards, "rx_discards", "Discarded RX packets"}, {ð_stats->rx_unknown_protocol, "rx_unknown_proto", "RX unknown protocol packets"}, {ð_stats->tx_bytes, "good_octets_txd", "Good Octets Transmitted"}, {ð_stats->tx_unicast, "ucast_pkts_txd", "Unicast Packets Transmitted"}, {ð_stats->tx_multicast, "mcast_pkts_txd", "Multicast Packets Transmitted"}, {ð_stats->tx_broadcast, "bcast_pkts_txd", "Broadcast Packets Transmitted"}, {ð_stats->tx_errors, "tx_errors", "TX packet errors"}, // end {0,0,0} }; struct iavf_sysctl_info *entry = ctls; while (entry->stat != 0) { SYSCTL_ADD_UQUAD(ctx, child, OID_AUTO, entry->name, CTLFLAG_RD, entry->stat, entry->description); entry++; } } /** * iavf_max_vc_speed_to_value - Convert link speed to IF speed value * @link_speeds: bitmap of supported link speeds * * @returns the link speed value for the highest speed reported in the * link_speeds bitmap. */ u64 iavf_max_vc_speed_to_value(u8 link_speeds) { if (link_speeds & VIRTCHNL_LINK_SPEED_40GB) return IF_Gbps(40); if (link_speeds & VIRTCHNL_LINK_SPEED_25GB) return IF_Gbps(25); if (link_speeds & VIRTCHNL_LINK_SPEED_20GB) return IF_Gbps(20); if (link_speeds & VIRTCHNL_LINK_SPEED_10GB) return IF_Gbps(10); if (link_speeds & VIRTCHNL_LINK_SPEED_1GB) return IF_Gbps(1); if (link_speeds & VIRTCHNL_LINK_SPEED_100MB) return IF_Mbps(100); else /* Minimum supported link speed */ return IF_Mbps(100); } /** * iavf_config_rss_reg - Configure RSS using registers * @sc: device private softc * * Configures RSS for this function using the device registers. Called if the * PF does not support configuring RSS over the virtchnl interface. */ void iavf_config_rss_reg(struct iavf_sc *sc) { struct iavf_hw *hw = &sc->hw; struct iavf_vsi *vsi = &sc->vsi; u32 lut = 0; u64 set_hena = 0, hena; int i, j, que_id; u32 rss_seed[IAVF_RSS_KEY_SIZE_REG]; #ifdef RSS u32 rss_hash_config; #endif /* Don't set up RSS if using a single queue */ if (IAVF_NRXQS(vsi) == 1) { wr32(hw, IAVF_VFQF_HENA(0), 0); wr32(hw, IAVF_VFQF_HENA(1), 0); iavf_flush(hw); return; } #ifdef RSS /* Fetch the configured RSS key */ rss_getkey((uint8_t *) &rss_seed); #else iavf_get_default_rss_key(rss_seed); #endif /* Fill out hash function seed */ for (i = 0; i < IAVF_RSS_KEY_SIZE_REG; i++) wr32(hw, IAVF_VFQF_HKEY(i), rss_seed[i]); /* Enable PCTYPES for RSS: */ #ifdef RSS rss_hash_config = rss_gethashconfig(); if (rss_hash_config & RSS_HASHTYPE_RSS_IPV4) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_NONF_IPV4_OTHER); if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV4) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_NONF_IPV4_TCP); if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV4) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_NONF_IPV4_UDP); if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_NONF_IPV6_OTHER); if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6_EX) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_FRAG_IPV6); if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_NONF_IPV6_TCP); if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6) set_hena |= ((u64)1 << IAVF_FILTER_PCTYPE_NONF_IPV6_UDP); #else set_hena = IAVF_DEFAULT_RSS_HENA_XL710; #endif hena = (u64)rd32(hw, IAVF_VFQF_HENA(0)) | ((u64)rd32(hw, IAVF_VFQF_HENA(1)) << 32); hena |= set_hena; wr32(hw, IAVF_VFQF_HENA(0), (u32)hena); wr32(hw, IAVF_VFQF_HENA(1), (u32)(hena >> 32)); /* Populate the LUT with max no. of queues in round robin fashion */ for (i = 0, j = 0; i < IAVF_RSS_VSI_LUT_SIZE; i++, j++) { if (j == IAVF_NRXQS(vsi)) j = 0; #ifdef RSS /* * Fetch the RSS bucket id for the given indirection entry. * Cap it at the number of configured buckets (which is * num_rx_queues.) */ que_id = rss_get_indirection_to_bucket(i); que_id = que_id % IAVF_NRXQS(vsi); #else que_id = j; #endif /* lut = 4-byte sliding window of 4 lut entries */ lut = (lut << 8) | (que_id & IAVF_RSS_VF_LUT_ENTRY_MASK); /* On i = 3, we have 4 entries in lut; write to the register */ if ((i & 3) == 3) { wr32(hw, IAVF_VFQF_HLUT(i >> 2), lut); iavf_dbg_rss(sc, "%s: HLUT(%2d): %#010x", __func__, i, lut); } } iavf_flush(hw); } /** * iavf_config_rss_pf - Configure RSS using PF virtchnl messages * @sc: device private softc * * Configure RSS by sending virtchnl messages to the PF. */ void iavf_config_rss_pf(struct iavf_sc *sc) { iavf_send_vc_msg(sc, IAVF_FLAG_AQ_CONFIG_RSS_KEY); iavf_send_vc_msg(sc, IAVF_FLAG_AQ_SET_RSS_HENA); iavf_send_vc_msg(sc, IAVF_FLAG_AQ_CONFIG_RSS_LUT); } /** * iavf_config_rss - setup RSS * @sc: device private softc * * Configures RSS using the method determined by capability flags in the VF * resources structure sent from the PF over the virtchnl interface. * * @remark RSS keys and table are cleared on VF reset. */ void iavf_config_rss(struct iavf_sc *sc) { if (sc->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_REG) { iavf_dbg_info(sc, "Setting up RSS using VF registers...\n"); iavf_config_rss_reg(sc); } else if (sc->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) { iavf_dbg_info(sc, "Setting up RSS using messages to PF...\n"); iavf_config_rss_pf(sc); } else device_printf(sc->dev, "VF does not support RSS capability sent by PF.\n"); } /** * iavf_config_promisc - setup promiscuous mode * @sc: device private softc * @flags: promiscuous flags to configure * * Request that promiscuous modes be enabled from the PF * * @returns zero on success, or an error code on failure. */ int iavf_config_promisc(struct iavf_sc *sc, int flags) { struct ifnet *ifp = sc->vsi.ifp; sc->promisc_flags = 0; if (flags & IFF_ALLMULTI || - if_llmaddr_count(ifp) == MAX_MULTICAST_ADDR) + iavf_llmaddr_count(ifp) >= MAX_MULTICAST_ADDR) sc->promisc_flags |= FLAG_VF_MULTICAST_PROMISC; if (flags & IFF_PROMISC) sc->promisc_flags |= FLAG_VF_UNICAST_PROMISC; iavf_send_vc_msg(sc, IAVF_FLAG_AQ_CONFIGURE_PROMISC); return (0); } /** * iavf_mc_filter_apply - Program a MAC filter for this VF * @arg: pointer to the device softc * @sdl: MAC multicast address * @cnt: unused parameter * * Program a MAC address multicast filter for this device. Intended * to be used with the map-like function if_foreach_llmaddr(). * * @returns 1 on success, or 0 on failure */ static u_int iavf_mc_filter_apply(void *arg, struct sockaddr_dl *sdl, u_int cnt __unused) { struct iavf_sc *sc = (struct iavf_sc *)arg; int error; error = iavf_add_mac_filter(sc, (u8*)LLADDR(sdl), IAVF_FILTER_MC); return (!error); } /** * iavf_init_multi - Initialize multicast address filters * @sc: device private softc * * Called during initialization to reset multicast address filters to a known * fresh state by deleting all currently active filters. */ void iavf_init_multi(struct iavf_sc *sc) { struct iavf_mac_filter *f; int mcnt = 0; /* First clear any multicast filters */ SLIST_FOREACH(f, sc->mac_filters, next) { if ((f->flags & IAVF_FILTER_USED) && (f->flags & IAVF_FILTER_MC)) { f->flags |= IAVF_FILTER_DEL; mcnt++; } } if (mcnt > 0) iavf_send_vc_msg(sc, IAVF_FLAG_AQ_DEL_MAC_FILTER); } /** * iavf_multi_set - Set multicast filters * @sc: device private softc * * Set multicast MAC filters for this device. If there are too many filters, * this will request the device to go into multicast promiscuous mode instead. */ void iavf_multi_set(struct iavf_sc *sc) { if_t ifp = sc->vsi.ifp; int mcnt = 0; IOCTL_DEBUGOUT("iavf_multi_set: begin"); - mcnt = if_llmaddr_count(ifp); + mcnt = iavf_llmaddr_count(ifp); if (__predict_false(mcnt == MAX_MULTICAST_ADDR)) { /* Delete MC filters and enable mulitcast promisc instead */ iavf_init_multi(sc); sc->promisc_flags |= FLAG_VF_MULTICAST_PROMISC; iavf_send_vc_msg(sc, IAVF_FLAG_AQ_CONFIGURE_PROMISC); return; } /* If there aren't too many filters, delete existing MC filters */ iavf_init_multi(sc); /* And (re-)install filters for all mcast addresses */ mcnt = if_foreach_llmaddr(ifp, iavf_mc_filter_apply, sc); if (mcnt > 0) iavf_send_vc_msg(sc, IAVF_FLAG_AQ_ADD_MAC_FILTER); } /** * iavf_add_mac_filter - Add a MAC filter to the sc MAC list * @sc: device private softc * @macaddr: MAC address to add * @flags: filter flags * * Add a new MAC filter to the softc MAC filter list. These will later be sent * to the physical function (and ultimately hardware) via the virtchnl * interface. * * @returns zero on success, EEXIST if the filter already exists, and ENOMEM * if we ran out of memory allocating the filter structure. */ int iavf_add_mac_filter(struct iavf_sc *sc, u8 *macaddr, u16 flags) { struct iavf_mac_filter *f; /* Does one already exist? */ f = iavf_find_mac_filter(sc, macaddr); if (f != NULL) { iavf_dbg_filter(sc, "exists: " MAC_FORMAT "\n", MAC_FORMAT_ARGS(macaddr)); return (EEXIST); } /* If not, get a new empty filter */ f = iavf_get_mac_filter(sc); if (f == NULL) { device_printf(sc->dev, "%s: no filters available!!\n", __func__); return (ENOMEM); } iavf_dbg_filter(sc, "marked: " MAC_FORMAT "\n", MAC_FORMAT_ARGS(macaddr)); bcopy(macaddr, f->macaddr, ETHER_ADDR_LEN); f->flags |= (IAVF_FILTER_ADD | IAVF_FILTER_USED); f->flags |= flags; return (0); } /** * iavf_find_mac_filter - Find a MAC filter with the given address * @sc: device private softc * @macaddr: the MAC address to find * * Finds the filter structure in the MAC filter list with the corresponding * MAC address. * * @returns a pointer to the filter structure, or NULL if no such filter * exists in the list yet. */ struct iavf_mac_filter * iavf_find_mac_filter(struct iavf_sc *sc, u8 *macaddr) { struct iavf_mac_filter *f; bool match = FALSE; SLIST_FOREACH(f, sc->mac_filters, next) { if (cmp_etheraddr(f->macaddr, macaddr)) { match = TRUE; break; } } if (!match) f = NULL; return (f); } /** * iavf_get_mac_filter - Get a new MAC address filter * @sc: device private softc * * Allocates a new filter structure and inserts it into the MAC filter list. * * @post the caller must fill in the structure details after calling this * function, but does not need to insert it into the linked list. * * @returns a pointer to the new filter structure, or NULL of we failed to * allocate it. */ struct iavf_mac_filter * iavf_get_mac_filter(struct iavf_sc *sc) { struct iavf_mac_filter *f; f = (struct iavf_mac_filter *)malloc(sizeof(struct iavf_mac_filter), M_IAVF, M_NOWAIT | M_ZERO); if (f) SLIST_INSERT_HEAD(sc->mac_filters, f, next); return (f); } /** * iavf_baudrate_from_link_speed - Convert link speed to baudrate * @sc: device private softc * * @post The link_speed_adv field is in Mbps, so it is multipled by * 1,000,000 before it's returned. * * @returns the adapter link speed in bits/sec */ u64 iavf_baudrate_from_link_speed(struct iavf_sc *sc) { if (sc->vf_res->vf_cap_flags & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) return (sc->link_speed_adv * IAVF_ADV_LINK_SPEED_SCALE); else return iavf_max_vc_speed_to_value(sc->link_speed); } /** * iavf_add_vlan_filter - Add a VLAN filter to the softc VLAN list * @sc: device private softc * @vtag: the VLAN id to filter * * Allocate a new VLAN filter structure and insert it into the VLAN list. */ void iavf_add_vlan_filter(struct iavf_sc *sc, u16 vtag) { struct iavf_vlan_filter *v; v = (struct iavf_vlan_filter *)malloc(sizeof(struct iavf_vlan_filter), M_IAVF, M_WAITOK | M_ZERO); SLIST_INSERT_HEAD(sc->vlan_filters, v, next); v->vlan = vtag; v->flags = IAVF_FILTER_ADD; } /** * iavf_mark_del_vlan_filter - Mark a given VLAN id for deletion * @sc: device private softc * @vtag: the VLAN id to delete * * Marks all VLAN filters matching the given vtag for deletion. * * @returns the number of filters marked for deletion. * * @remark the filters are not removed immediately, but will be removed from * the list by another function that synchronizes over the virtchnl interface. */ int iavf_mark_del_vlan_filter(struct iavf_sc *sc, u16 vtag) { struct iavf_vlan_filter *v; int i = 0; SLIST_FOREACH(v, sc->vlan_filters, next) { if (v->vlan == vtag) { v->flags = IAVF_FILTER_DEL; ++i; } } return (i); } /** * iavf_update_msix_devinfo - Fix MSIX values for pci_msix_count() * @dev: pointer to kernel device * * Fix cached MSI-X control register information. This is a workaround * for an issue where VFs spawned in non-passthrough mode on FreeBSD * will have their PCI information cached before the PF driver * finishes updating their PCI information. * * @pre Must be called before pci_msix_count() */ void iavf_update_msix_devinfo(device_t dev) { struct pci_devinfo *dinfo; u32 msix_ctrl; dinfo = (struct pci_devinfo *)device_get_ivars(dev); /* We can hardcode this offset since we know the device */ msix_ctrl = pci_read_config(dev, 0x70 + PCIR_MSIX_CTRL, 2); dinfo->cfg.msix.msix_ctrl = msix_ctrl; dinfo->cfg.msix.msix_msgnum = (msix_ctrl & PCIM_MSIXCTRL_TABLE_SIZE) + 1; } /** * iavf_disable_queues_with_retries - Send PF multiple DISABLE_QUEUES messages * @sc: device softc * * Send a virtual channel message to the PF to DISABLE_QUEUES, but resend it up * to IAVF_MAX_DIS_Q_RETRY times if the response says that it wasn't * successful. This is intended to workaround a bug that can appear on the PF. */ void iavf_disable_queues_with_retries(struct iavf_sc *sc) { bool in_detach = iavf_driver_is_detaching(sc); int max_attempts = IAVF_MAX_DIS_Q_RETRY; int msg_count = 0; /* While the driver is detaching, it doesn't care if the queue * disable finishes successfully or not. Just send one message * to just notify the PF driver. */ if (in_detach) max_attempts = 1; while ((msg_count < max_attempts) && atomic_load_acq_32(&sc->queues_enabled)) { msg_count++; iavf_send_vc_msg_sleep(sc, IAVF_FLAG_AQ_DISABLE_QUEUES); } /* Possibly print messages about retry attempts and issues */ if (msg_count > 1) iavf_dbg_vc(sc, "DISABLE_QUEUES messages sent: %d\n", msg_count); if (!in_detach && msg_count >= max_attempts) device_printf(sc->dev, "%s: DISABLE_QUEUES may have failed\n", __func__); }