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sys/dev/iavf/if_iavf_iflib.c

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/* 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 if_iavf_iflib.c
* @brief iflib driver implementation
*
* Contains the main entry point for the iflib driver implementation. It
* implements the various ifdi driver methods, and sets up the module and
* driver values to load an iflib driver.
*/
#include "iavf_iflib.h"
#include "iavf_vc_common.h"
#include "iavf_drv_info.h"
#include "iavf_sysctls_iflib.h"
/*********************************************************************
* Function prototypes
*********************************************************************/
static void *iavf_register(device_t dev);
static int iavf_if_attach_pre(if_ctx_t ctx);
static int iavf_if_attach_post(if_ctx_t ctx);
static int iavf_if_detach(if_ctx_t ctx);
static int iavf_if_shutdown(if_ctx_t ctx);
static int iavf_if_suspend(if_ctx_t ctx);
static int iavf_if_resume(if_ctx_t ctx);
static int iavf_if_msix_intr_assign(if_ctx_t ctx, int msix);
static void iavf_if_enable_intr(if_ctx_t ctx);
static void iavf_if_disable_intr(if_ctx_t ctx);
static int iavf_if_rx_queue_intr_enable(if_ctx_t ctx, uint16_t rxqid);
static int iavf_if_tx_queue_intr_enable(if_ctx_t ctx, uint16_t txqid);
static int iavf_if_tx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int ntxqs, int ntxqsets);
static int iavf_if_rx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int nqs, int nqsets);
static void iavf_if_queues_free(if_ctx_t ctx);
static void iavf_if_update_admin_status(if_ctx_t ctx);
static void iavf_if_multi_set(if_ctx_t ctx);
static int iavf_if_mtu_set(if_ctx_t ctx, uint32_t mtu);
static void iavf_if_media_status(if_ctx_t ctx, struct ifmediareq *ifmr);
static int iavf_if_media_change(if_ctx_t ctx);
static int iavf_if_promisc_set(if_ctx_t ctx, int flags);
static void iavf_if_timer(if_ctx_t ctx, uint16_t qid);
static void iavf_if_vlan_register(if_ctx_t ctx, u16 vtag);
static void iavf_if_vlan_unregister(if_ctx_t ctx, u16 vtag);
static uint64_t iavf_if_get_counter(if_ctx_t ctx, ift_counter cnt);
static void iavf_if_init(if_ctx_t ctx);
static void iavf_if_stop(if_ctx_t ctx);
static int iavf_allocate_pci_resources(struct iavf_sc *);
static void iavf_free_pci_resources(struct iavf_sc *);
static void iavf_setup_interface(struct iavf_sc *);
static void iavf_add_device_sysctls(struct iavf_sc *);
static void iavf_enable_queue_irq(struct iavf_hw *, int);
static void iavf_disable_queue_irq(struct iavf_hw *, int);
static void iavf_stop(struct iavf_sc *);
static int iavf_del_mac_filter(struct iavf_sc *sc, u8 *macaddr);
static int iavf_msix_que(void *);
static int iavf_msix_adminq(void *);
static void iavf_configure_itr(struct iavf_sc *sc);
static int iavf_sysctl_queue_interrupt_table(SYSCTL_HANDLER_ARGS);
#ifdef IAVF_DEBUG
static int iavf_sysctl_vf_reset(SYSCTL_HANDLER_ARGS);
static int iavf_sysctl_vflr_reset(SYSCTL_HANDLER_ARGS);
#endif
static enum iavf_status iavf_process_adminq(struct iavf_sc *, u16 *);
static void iavf_vc_task(void *arg, int pending __unused);
static int iavf_setup_vc_tq(struct iavf_sc *sc);
static int iavf_vc_sleep_wait(struct iavf_sc *sc, u32 op);
/*********************************************************************
* FreeBSD Device Interface Entry Points
*********************************************************************/
/**
* @var iavf_methods
* @brief device methods for the iavf driver
*
* Device method callbacks used to interact with the driver. For iflib this
* primarily resolves to the default iflib implementations.
*/
static device_method_t iavf_methods[] = {
/* Device interface */
DEVMETHOD(device_register, iavf_register),
DEVMETHOD(device_probe, iflib_device_probe),
DEVMETHOD(device_attach, iflib_device_attach),
DEVMETHOD(device_detach, iflib_device_detach),
DEVMETHOD(device_shutdown, iflib_device_shutdown),
DEVMETHOD_END
};
static driver_t iavf_driver = {
"iavf", iavf_methods, sizeof(struct iavf_sc),
};
devclass_t iavf_devclass;
DRIVER_MODULE(iavf, pci, iavf_driver, iavf_devclass, 0, 0);
MODULE_VERSION(iavf, 1);
MODULE_DEPEND(iavf, pci, 1, 1, 1);
MODULE_DEPEND(iavf, ether, 1, 1, 1);
MODULE_DEPEND(iavf, iflib, 1, 1, 1);
IFLIB_PNP_INFO(pci, iavf, iavf_vendor_info_array);
/**
* @var M_IAVF
* @brief main iavf driver allocation type
*
* malloc(9) allocation type used by the majority of memory allocations in the
* iavf iflib driver.
*/
MALLOC_DEFINE(M_IAVF, "iavf", "iavf driver allocations");
static device_method_t iavf_if_methods[] = {
DEVMETHOD(ifdi_attach_pre, iavf_if_attach_pre),
DEVMETHOD(ifdi_attach_post, iavf_if_attach_post),
DEVMETHOD(ifdi_detach, iavf_if_detach),
DEVMETHOD(ifdi_shutdown, iavf_if_shutdown),
DEVMETHOD(ifdi_suspend, iavf_if_suspend),
DEVMETHOD(ifdi_resume, iavf_if_resume),
DEVMETHOD(ifdi_init, iavf_if_init),
DEVMETHOD(ifdi_stop, iavf_if_stop),
DEVMETHOD(ifdi_msix_intr_assign, iavf_if_msix_intr_assign),
DEVMETHOD(ifdi_intr_enable, iavf_if_enable_intr),
DEVMETHOD(ifdi_intr_disable, iavf_if_disable_intr),
DEVMETHOD(ifdi_rx_queue_intr_enable, iavf_if_rx_queue_intr_enable),
DEVMETHOD(ifdi_tx_queue_intr_enable, iavf_if_tx_queue_intr_enable),
DEVMETHOD(ifdi_tx_queues_alloc, iavf_if_tx_queues_alloc),
DEVMETHOD(ifdi_rx_queues_alloc, iavf_if_rx_queues_alloc),
DEVMETHOD(ifdi_queues_free, iavf_if_queues_free),
DEVMETHOD(ifdi_update_admin_status, iavf_if_update_admin_status),
DEVMETHOD(ifdi_multi_set, iavf_if_multi_set),
DEVMETHOD(ifdi_mtu_set, iavf_if_mtu_set),
DEVMETHOD(ifdi_media_status, iavf_if_media_status),
DEVMETHOD(ifdi_media_change, iavf_if_media_change),
DEVMETHOD(ifdi_promisc_set, iavf_if_promisc_set),
DEVMETHOD(ifdi_timer, iavf_if_timer),
DEVMETHOD(ifdi_vlan_register, iavf_if_vlan_register),
DEVMETHOD(ifdi_vlan_unregister, iavf_if_vlan_unregister),
DEVMETHOD(ifdi_get_counter, iavf_if_get_counter),
DEVMETHOD_END
};
static driver_t iavf_if_driver = {
"iavf_if", iavf_if_methods, sizeof(struct iavf_sc)
};
extern struct if_txrx iavf_txrx_hwb;
extern struct if_txrx iavf_txrx_dwb;
static struct if_shared_ctx iavf_sctx = {
.isc_magic = IFLIB_MAGIC,
.isc_q_align = PAGE_SIZE,
.isc_tx_maxsize = IAVF_MAX_FRAME,
.isc_tx_maxsegsize = IAVF_MAX_FRAME,
.isc_tso_maxsize = IAVF_TSO_SIZE + sizeof(struct ether_vlan_header),
.isc_tso_maxsegsize = IAVF_MAX_DMA_SEG_SIZE,
.isc_rx_maxsize = IAVF_MAX_FRAME,
.isc_rx_nsegments = IAVF_MAX_RX_SEGS,
.isc_rx_maxsegsize = IAVF_MAX_FRAME,
.isc_nfl = 1,
.isc_ntxqs = 1,
.isc_nrxqs = 1,
.isc_admin_intrcnt = 1,
.isc_vendor_info = iavf_vendor_info_array,
.isc_driver_version = __DECONST(char *, iavf_driver_version),
.isc_driver = &iavf_if_driver,
.isc_flags = IFLIB_NEED_SCRATCH | IFLIB_NEED_ZERO_CSUM | IFLIB_TSO_INIT_IP | IFLIB_IS_VF,
.isc_nrxd_min = {IAVF_MIN_RING},
.isc_ntxd_min = {IAVF_MIN_RING},
.isc_nrxd_max = {IAVF_MAX_RING},
.isc_ntxd_max = {IAVF_MAX_RING},
.isc_nrxd_default = {IAVF_DEFAULT_RING},
.isc_ntxd_default = {IAVF_DEFAULT_RING},
};
/*** Functions ***/
/**
* iavf_register - iflib callback to obtain the shared context pointer
* @dev: the device being registered
*
* Called when the driver is first being attached to the driver. This function
* is used by iflib to obtain a pointer to the shared context structure which
* describes the device features.
*
* @returns a pointer to the iavf shared context structure.
*/
static void *
iavf_register(device_t dev __unused)
{
return (&iavf_sctx);
}
/**
* iavf_allocate_pci_resources - Allocate PCI resources
* @sc: the device private softc
*
* Allocate PCI resources used by the iflib driver.
*
* @returns zero or a non-zero error code on failure
*/
static int
iavf_allocate_pci_resources(struct iavf_sc *sc)
{
return iavf_allocate_pci_resources_common(sc);
}
/**
* iavf_if_attach_pre - Begin attaching the device to the driver
* @ctx: the iflib context pointer
*
* Called by iflib to begin the attach process. Allocates resources and
* initializes the hardware for operation.
*
* @returns zero or a non-zero error code on failure.
*/
static int
iavf_if_attach_pre(if_ctx_t ctx)
{
device_t dev;
struct iavf_sc *sc;
struct iavf_hw *hw;
struct iavf_vsi *vsi;
if_softc_ctx_t scctx;
int error = 0;
/* Setup pointers */
dev = iflib_get_dev(ctx);
sc = iavf_sc_from_ctx(ctx);
vsi = &sc->vsi;
vsi->back = sc;
sc->dev = sc->osdep.dev = dev;
hw = &sc->hw;
vsi->dev = dev;
vsi->hw = &sc->hw;
vsi->num_vlans = 0;
vsi->ctx = ctx;
sc->media = iflib_get_media(ctx);
vsi->ifp = iflib_get_ifp(ctx);
vsi->shared = scctx = iflib_get_softc_ctx(ctx);
iavf_save_tunables(sc);
/* Setup VC mutex */
snprintf(sc->vc_mtx_name, sizeof(sc->vc_mtx_name),
"%s:vc", device_get_nameunit(dev));
mtx_init(&sc->vc_mtx, sc->vc_mtx_name, NULL, MTX_DEF);
/* Do PCI setup - map BAR0, etc */
error = iavf_allocate_pci_resources(sc);
if (error) {
device_printf(dev, "%s: Allocation of PCI resources failed\n",
__func__);
goto err_early;
}
iavf_dbg_init(sc, "Allocated PCI resources and MSI-X vectors\n");
error = iavf_set_mac_type(hw);
if (error) {
device_printf(dev, "%s: set_mac_type failed: %d\n",
__func__, error);
goto err_pci_res;
}
error = iavf_reset_complete(hw);
if (error) {
device_printf(dev, "%s: Device is still being reset\n",
__func__);
goto err_pci_res;
}
iavf_dbg_init(sc, "VF Device is ready for configuration\n");
/* Sets up Admin Queue */
error = iavf_setup_vc(sc);
if (error) {
device_printf(dev, "%s: Error setting up PF comms, %d\n",
__func__, error);
goto err_pci_res;
}
iavf_dbg_init(sc, "PF API version verified\n");
/* Need API version before sending reset message */
error = iavf_reset(sc);
if (error) {
device_printf(dev, "VF reset failed; reload the driver\n");
goto err_aq;
}
iavf_dbg_init(sc, "VF reset complete\n");
/* Ask for VF config from PF */
error = iavf_vf_config(sc);
if (error) {
device_printf(dev, "Error getting configuration from PF: %d\n",
error);
goto err_aq;
}
iavf_print_device_info(sc);
error = iavf_get_vsi_res_from_vf_res(sc);
if (error)
goto err_res_buf;
iavf_dbg_init(sc, "Resource Acquisition complete\n");
/* Setup taskqueue to service VC messages */
error = iavf_setup_vc_tq(sc);
if (error)
goto err_vc_tq;
iavf_set_mac_addresses(sc);
iflib_set_mac(ctx, hw->mac.addr);
/* Allocate filter lists */
iavf_init_filters(sc);
/* Fill out more iflib parameters */
scctx->isc_ntxqsets_max = scctx->isc_nrxqsets_max =
sc->vsi_res->num_queue_pairs;
if (vsi->enable_head_writeback) {
scctx->isc_txqsizes[0] = roundup2(scctx->isc_ntxd[0]
* sizeof(struct iavf_tx_desc) + sizeof(u32), DBA_ALIGN);
scctx->isc_txrx = &iavf_txrx_hwb;
} else {
scctx->isc_txqsizes[0] = roundup2(scctx->isc_ntxd[0]
* sizeof(struct iavf_tx_desc), DBA_ALIGN);
scctx->isc_txrx = &iavf_txrx_dwb;
}
scctx->isc_rxqsizes[0] = roundup2(scctx->isc_nrxd[0]
* sizeof(union iavf_32byte_rx_desc), DBA_ALIGN);
scctx->isc_msix_bar = PCIR_BAR(IAVF_MSIX_BAR);
scctx->isc_tx_nsegments = IAVF_MAX_TX_SEGS;
scctx->isc_tx_tso_segments_max = IAVF_MAX_TSO_SEGS;
scctx->isc_tx_tso_size_max = IAVF_TSO_SIZE;
scctx->isc_tx_tso_segsize_max = IAVF_MAX_DMA_SEG_SIZE;
scctx->isc_rss_table_size = IAVF_RSS_VSI_LUT_SIZE;
scctx->isc_capabilities = scctx->isc_capenable = IAVF_CAPS;
scctx->isc_tx_csum_flags = CSUM_OFFLOAD;
/* Update OS cache of MSIX control register values */
iavf_update_msix_devinfo(dev);
return (0);
err_vc_tq:
taskqueue_free(sc->vc_tq);
err_res_buf:
free(sc->vf_res, M_IAVF);
err_aq:
iavf_shutdown_adminq(hw);
err_pci_res:
iavf_free_pci_resources(sc);
err_early:
IAVF_VC_LOCK_DESTROY(sc);
return (error);
}
/**
* iavf_vc_task - task used to process VC messages
* @arg: device softc
* @pending: unused
*
* Processes the admin queue, in order to process the virtual
* channel messages received from the PF.
*/
static void
iavf_vc_task(void *arg, int pending __unused)
{
struct iavf_sc *sc = (struct iavf_sc *)arg;
u16 var;
iavf_process_adminq(sc, &var);
}
/**
* iavf_setup_vc_tq - Setup task queues
* @sc: device softc
*
* Create taskqueue and tasklet for processing virtual channel messages. This
* is done in a separate non-iflib taskqueue so that the iflib context lock
* does not need to be held for VC messages to be processed.
*
* @returns zero on success, or an error code on failure.
*/
static int
iavf_setup_vc_tq(struct iavf_sc *sc)
{
device_t dev = sc->dev;
int error = 0;
TASK_INIT(&sc->vc_task, 0, iavf_vc_task, sc);
sc->vc_tq = taskqueue_create_fast("iavf_vc", M_NOWAIT,
taskqueue_thread_enqueue, &sc->vc_tq);
if (!sc->vc_tq) {
device_printf(dev, "taskqueue_create_fast (for VC task) returned NULL!\n");
return (ENOMEM);
}
error = taskqueue_start_threads(&sc->vc_tq, 1, PI_NET, "%s vc",
device_get_nameunit(dev));
if (error) {
device_printf(dev, "taskqueue_start_threads (for VC task) error: %d\n",
error);
taskqueue_free(sc->vc_tq);
return (error);
}
return (error);
}
/**
* iavf_if_attach_post - Finish attaching the device to the driver
* @ctx: the iflib context pointer
*
* Called by iflib after it has setup queues and interrupts. Used to finish up
* the attach process for a device. Attach logic which must occur after Tx and
* Rx queues are setup belongs here.
*
* @returns zero or a non-zero error code on failure
*/
static int
iavf_if_attach_post(if_ctx_t ctx)
{
device_t dev;
struct iavf_sc *sc;
struct iavf_hw *hw;
struct iavf_vsi *vsi;
int error = 0;
dev = iflib_get_dev(ctx);
INIT_DBG_DEV(dev, "begin");
sc = iavf_sc_from_ctx(ctx);
vsi = &sc->vsi;
hw = &sc->hw;
/* Save off determined number of queues for interface */
vsi->num_rx_queues = vsi->shared->isc_nrxqsets;
vsi->num_tx_queues = vsi->shared->isc_ntxqsets;
/* Setup the stack interface */
iavf_setup_interface(sc);
iavf_dbg_init(sc, "Interface setup complete\n");
/* Initialize statistics & add sysctls */
bzero(&sc->vsi.eth_stats, sizeof(struct iavf_eth_stats));
iavf_add_device_sysctls(sc);
atomic_store_rel_32(&sc->queues_enabled, 0);
iavf_set_state(&sc->state, IAVF_STATE_INITIALIZED);
/* We want AQ enabled early for init */
iavf_enable_adminq_irq(hw);
INIT_DBG_DEV(dev, "end");
return (error);
}
/**
* iavf_if_detach - Detach a device from the driver
* @ctx: the iflib context of the device to detach
*
* Called by iflib to detach a given device from the driver. Clean up any
* resources associated with the driver and shut the device down.
*
* @remark iflib always ignores the return value of IFDI_DETACH, so this
* function is effectively not allowed to fail. Instead, it should clean up
* and release as much as possible even if something goes wrong.
*
* @returns zero
*/
static int
iavf_if_detach(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_hw *hw = &sc->hw;
device_t dev = sc->dev;
enum iavf_status status;
INIT_DBG_DEV(dev, "begin");
iavf_clear_state(&sc->state, IAVF_STATE_INITIALIZED);
/* Drain admin queue taskqueue */
taskqueue_free(sc->vc_tq);
IAVF_VC_LOCK_DESTROY(sc);
/* Remove all the media and link information */
ifmedia_removeall(sc->media);
iavf_disable_adminq_irq(hw);
status = iavf_shutdown_adminq(&sc->hw);
if (status != IAVF_SUCCESS) {
device_printf(dev,
"iavf_shutdown_adminq() failed with status %s\n",
iavf_stat_str(hw, status));
}
free(sc->vf_res, M_IAVF);
sc->vf_res = NULL;
iavf_free_pci_resources(sc);
iavf_free_filters(sc);
INIT_DBG_DEV(dev, "end");
return (0);
}
/**
* iavf_if_shutdown - called by iflib to handle shutdown
* @ctx: the iflib context pointer
*
* Callback for the IFDI_SHUTDOWN iflib function.
*
* @returns zero or an error code on failure
*/
static int
iavf_if_shutdown(if_ctx_t ctx __unused)
{
return (0);
}
/**
* iavf_if_suspend - called by iflib to handle suspend
* @ctx: the iflib context pointer
*
* Callback for the IFDI_SUSPEND iflib function.
*
* @returns zero or an error code on failure
*/
static int
iavf_if_suspend(if_ctx_t ctx __unused)
{
return (0);
}
/**
* iavf_if_resume - called by iflib to handle resume
* @ctx: the iflib context pointer
*
* Callback for the IFDI_RESUME iflib function.
*
* @returns zero or an error code on failure
*/
static int
iavf_if_resume(if_ctx_t ctx __unused)
{
return (0);
}
/**
* iavf_vc_sleep_wait - Sleep for a response from a VC message
* @sc: device softc
* @op: the op code to sleep on
*
* Sleep until a response from the PF for the VC message sent by the
* given op.
*
* @returns zero on success, or EWOULDBLOCK if the sleep times out.
*/
static int
iavf_vc_sleep_wait(struct iavf_sc *sc, u32 op)
{
int error = 0;
IAVF_VC_LOCK_ASSERT(sc);
iavf_dbg_vc(sc, "Sleeping for op %b\n", op, IAVF_FLAGS);
error = mtx_sleep(iavf_vc_get_op_chan(sc, op),
&sc->vc_mtx, PRI_MAX, "iavf_vc", IAVF_AQ_TIMEOUT);
return (error);
}
/**
* iavf_send_vc_msg_sleep - Send a virtchnl message and wait for a response
* @sc: device softc
* @op: the op code to send
*
* Send a virtchnl message to the PF, and sleep or busy wait for a response
* from the PF, depending on iflib context lock type.
*
* @remark this function does not wait if the device is detaching, on kernels
* that support indicating to the driver that the device is detaching
*
* @returns zero or an error code on failure.
*/
int
iavf_send_vc_msg_sleep(struct iavf_sc *sc, u32 op)
{
if_ctx_t ctx = sc->vsi.ctx;
int error = 0;
IAVF_VC_LOCK(sc);
error = iavf_vc_send_cmd(sc, op);
if (error != 0) {
iavf_dbg_vc(sc, "Error sending %b: %d\n", op, IAVF_FLAGS, error);
goto release_lock;
}
/* Don't wait for a response if the device is being detached. */
if (!iflib_in_detach(ctx)) {
error = iavf_vc_sleep_wait(sc, op);
IAVF_VC_LOCK_ASSERT(sc);
if (error == EWOULDBLOCK)
device_printf(sc->dev, "%b timed out\n", op, IAVF_FLAGS);
}
release_lock:
IAVF_VC_UNLOCK(sc);
return (error);
}
/**
* iavf_send_vc_msg - Send a virtchnl message to the PF
* @sc: device softc
* @op: the op code to send
*
* Send a virtchnl message to the PF and do not wait for a response.
*
* @returns zero on success, or an error code on failure.
*/
int
iavf_send_vc_msg(struct iavf_sc *sc, u32 op)
{
int error = 0;
error = iavf_vc_send_cmd(sc, op);
if (error != 0)
iavf_dbg_vc(sc, "Error sending %b: %d\n", op, IAVF_FLAGS, error);
return (error);
}
/**
* iavf_init_queues - initialize Tx and Rx queues
* @vsi: the VSI to initialize
*
* Refresh the Tx and Rx ring contents and update the tail pointers for each
* queue.
*/
static void
iavf_init_queues(struct iavf_vsi *vsi)
{
struct iavf_tx_queue *tx_que = vsi->tx_queues;
struct iavf_rx_queue *rx_que = vsi->rx_queues;
struct rx_ring *rxr;
uint32_t mbuf_sz;
mbuf_sz = iflib_get_rx_mbuf_sz(vsi->ctx);
MPASS(mbuf_sz <= UINT16_MAX);
for (int i = 0; i < vsi->num_tx_queues; i++, tx_que++)
iavf_init_tx_ring(vsi, tx_que);
for (int i = 0; i < vsi->num_rx_queues; i++, rx_que++) {
rxr = &rx_que->rxr;
rxr->mbuf_sz = mbuf_sz;
wr32(vsi->hw, rxr->tail, 0);
}
}
/**
* iavf_if_init - Initialize device for operation
* @ctx: the iflib context pointer
*
* Initializes a device for operation. Called by iflib in response to an
* interface up event from the stack.
*
* @remark this function does not return a value and thus cannot indicate
* failure to initialize.
*/
static void
iavf_if_init(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
struct iavf_hw *hw = &sc->hw;
if_t ifp = iflib_get_ifp(ctx);
u8 tmpaddr[ETHER_ADDR_LEN];
enum iavf_status status;
device_t dev = sc->dev;
int error = 0;
INIT_DBG_IF(ifp, "begin");
IFLIB_CTX_ASSERT(ctx);
error = iavf_reset_complete(hw);
if (error) {
device_printf(sc->dev, "%s: VF reset failed\n",
__func__);
}
if (!iavf_check_asq_alive(hw)) {
iavf_dbg_info(sc, "ASQ is not alive, re-initializing AQ\n");
pci_enable_busmaster(dev);
status = iavf_shutdown_adminq(hw);
if (status != IAVF_SUCCESS) {
device_printf(dev,
"%s: iavf_shutdown_adminq failed: %s\n",
__func__, iavf_stat_str(hw, status));
return;
}
status = iavf_init_adminq(hw);
if (status != IAVF_SUCCESS) {
device_printf(dev,
"%s: iavf_init_adminq failed: %s\n",
__func__, iavf_stat_str(hw, status));
return;
}
}
/* Make sure queues are disabled */
iavf_disable_queues_with_retries(sc);
bcopy(IF_LLADDR(ifp), tmpaddr, ETHER_ADDR_LEN);
if (!cmp_etheraddr(hw->mac.addr, tmpaddr) &&
(iavf_validate_mac_addr(tmpaddr) == IAVF_SUCCESS)) {
error = iavf_del_mac_filter(sc, hw->mac.addr);
if (error == 0)
iavf_send_vc_msg(sc, IAVF_FLAG_AQ_DEL_MAC_FILTER);
bcopy(tmpaddr, hw->mac.addr, ETH_ALEN);
}
error = iavf_add_mac_filter(sc, hw->mac.addr, 0);
if (!error || error == EEXIST)
iavf_send_vc_msg(sc, IAVF_FLAG_AQ_ADD_MAC_FILTER);
iflib_set_mac(ctx, hw->mac.addr);
/* Prepare the queues for operation */
iavf_init_queues(vsi);
/* Set initial ITR values */
iavf_configure_itr(sc);
iavf_send_vc_msg(sc, IAVF_FLAG_AQ_CONFIGURE_QUEUES);
/* Set up RSS */
iavf_config_rss(sc);
/* Map vectors */
iavf_send_vc_msg(sc, IAVF_FLAG_AQ_MAP_VECTORS);
/* Init SW TX ring indices */
if (vsi->enable_head_writeback)
iavf_init_tx_cidx(vsi);
else
iavf_init_tx_rsqs(vsi);
/* Configure promiscuous mode */
iavf_config_promisc(sc, if_getflags(ifp));
/* Enable queues */
iavf_send_vc_msg_sleep(sc, IAVF_FLAG_AQ_ENABLE_QUEUES);
iavf_set_state(&sc->state, IAVF_STATE_RUNNING);
}
/**
* iavf_if_msix_intr_assign - Assign MSI-X interrupts
* @ctx: the iflib context pointer
* @msix: the number of MSI-X vectors available
*
* Called by iflib to assign MSI-X interrupt vectors to queues. Assigns and
* sets up vectors for each Tx and Rx queue, as well as the administrative
* control interrupt.
*
* @returns zero or an error code on failure
*/
static int
iavf_if_msix_intr_assign(if_ctx_t ctx, int msix __unused)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
struct iavf_rx_queue *rx_que = vsi->rx_queues;
struct iavf_tx_queue *tx_que = vsi->tx_queues;
int err, i, rid, vector = 0;
char buf[16];
MPASS(vsi->shared->isc_nrxqsets > 0);
MPASS(vsi->shared->isc_ntxqsets > 0);
/* Admin Que is vector 0*/
rid = vector + 1;
err = iflib_irq_alloc_generic(ctx, &vsi->irq, rid, IFLIB_INTR_ADMIN,
iavf_msix_adminq, sc, 0, "aq");
if (err) {
iflib_irq_free(ctx, &vsi->irq);
device_printf(iflib_get_dev(ctx),
"Failed to register Admin Que handler");
return (err);
}
/* Now set up the stations */
for (i = 0, vector = 1; i < vsi->shared->isc_nrxqsets; i++, vector++, rx_que++) {
rid = vector + 1;
snprintf(buf, sizeof(buf), "rxq%d", i);
err = iflib_irq_alloc_generic(ctx, &rx_que->que_irq, rid,
IFLIB_INTR_RXTX, iavf_msix_que, rx_que, rx_que->rxr.me, buf);
if (err) {
device_printf(iflib_get_dev(ctx),
"Failed to allocate queue RX int vector %d, err: %d\n", i, err);
erjAuthorUnsubmitted
Done
Inline Actions

This needs to be updated to RXTX

erj: This needs to be updated to RXTX
vsi->num_rx_queues = i + 1;
goto fail;
}
rx_que->msix = vector;
}
bzero(buf, sizeof(buf));
for (i = 0; i < vsi->shared->isc_ntxqsets; i++, tx_que++) {
snprintf(buf, sizeof(buf), "txq%d", i);
iflib_softirq_alloc_generic(ctx,
&vsi->rx_queues[i % vsi->shared->isc_nrxqsets].que_irq,
IFLIB_INTR_TX, tx_que, tx_que->txr.me, buf);
tx_que->msix = (i % vsi->shared->isc_nrxqsets) + 1;
}
return (0);
fail:
iflib_irq_free(ctx, &vsi->irq);
rx_que = vsi->rx_queues;
for (int i = 0; i < vsi->num_rx_queues; i++, rx_que++)
iflib_irq_free(ctx, &rx_que->que_irq);
return (err);
}
/**
* iavf_if_enable_intr - Enable all interrupts for a device
* @ctx: the iflib context pointer
*
* Called by iflib to request enabling all interrupts.
*/
static void
iavf_if_enable_intr(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
iavf_enable_intr(vsi);
}
/**
* iavf_if_disable_intr - Disable all interrupts for a device
* @ctx: the iflib context pointer
*
* Called by iflib to request disabling all interrupts.
*/
static void
iavf_if_disable_intr(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
iavf_disable_intr(vsi);
}
/**
* iavf_if_rx_queue_intr_enable - Enable one Rx queue interrupt
* @ctx: the iflib context pointer
* @rxqid: Rx queue index
*
* Enables the interrupt associated with a specified Rx queue.
*
* @returns zero
*/
static int
iavf_if_rx_queue_intr_enable(if_ctx_t ctx, uint16_t rxqid)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
struct iavf_hw *hw = vsi->hw;
struct iavf_rx_queue *rx_que = &vsi->rx_queues[rxqid];
iavf_enable_queue_irq(hw, rx_que->msix - 1);
return (0);
}
/**
* iavf_if_tx_queue_intr_enable - Enable one Tx queue interrupt
* @ctx: the iflib context pointer
* @txqid: Tx queue index
*
* Enables the interrupt associated with a specified Tx queue.
*
* @returns zero
*/
static int
iavf_if_tx_queue_intr_enable(if_ctx_t ctx, uint16_t txqid)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
struct iavf_hw *hw = vsi->hw;
struct iavf_tx_queue *tx_que = &vsi->tx_queues[txqid];
iavf_enable_queue_irq(hw, tx_que->msix - 1);
return (0);
}
/**
* iavf_if_tx_queues_alloc - Allocate Tx queue memory
* @ctx: the iflib context pointer
* @vaddrs: Array of virtual addresses
* @paddrs: Array of physical addresses
* @ntxqs: the number of Tx queues per group (should always be 1)
* @ntxqsets: the number of Tx queues
*
* Allocates memory for the specified number of Tx queues. This includes
* memory for the queue structures and the report status array for the queues.
* The virtual and physical addresses are saved for later use during
* initialization.
*
* @returns zero or a non-zero error code on failure
*/
static int
iavf_if_tx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int ntxqs, int ntxqsets)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
if_softc_ctx_t scctx = vsi->shared;
struct iavf_tx_queue *que;
int i, j, error = 0;
MPASS(scctx->isc_ntxqsets > 0);
MPASS(ntxqs == 1);
MPASS(scctx->isc_ntxqsets == ntxqsets);
/* Allocate queue structure memory */
if (!(vsi->tx_queues =
(struct iavf_tx_queue *)malloc(sizeof(struct iavf_tx_queue) *ntxqsets, M_IAVF, M_NOWAIT | M_ZERO))) {
device_printf(iflib_get_dev(ctx), "Unable to allocate TX ring memory\n");
return (ENOMEM);
}
for (i = 0, que = vsi->tx_queues; i < ntxqsets; i++, que++) {
struct tx_ring *txr = &que->txr;
txr->me = i;
que->vsi = vsi;
if (!vsi->enable_head_writeback) {
/* Allocate report status array */
if (!(txr->tx_rsq = (qidx_t *)malloc(sizeof(qidx_t) * scctx->isc_ntxd[0], M_IAVF, M_NOWAIT))) {
device_printf(iflib_get_dev(ctx), "failed to allocate tx_rsq memory\n");
error = ENOMEM;
goto fail;
}
/* Init report status array */
for (j = 0; j < scctx->isc_ntxd[0]; j++)
txr->tx_rsq[j] = QIDX_INVALID;
}
/* get the virtual and physical address of the hardware queues */
txr->tail = IAVF_QTX_TAIL1(txr->me);
txr->tx_base = (struct iavf_tx_desc *)vaddrs[i * ntxqs];
txr->tx_paddr = paddrs[i * ntxqs];
txr->que = que;
}
return (0);
fail:
iavf_if_queues_free(ctx);
return (error);
}
/**
* iavf_if_rx_queues_alloc - Allocate Rx queue memory
* @ctx: the iflib context pointer
* @vaddrs: Array of virtual addresses
* @paddrs: Array of physical addresses
* @nrxqs: number of Rx queues per group (should always be 1)
* @nrxqsets: the number of Rx queues to allocate
*
* Called by iflib to allocate driver memory for a number of Rx queues.
* Allocates memory for the drivers private Rx queue data structure, and saves
* the physical and virtual addresses for later use.
*
* @returns zero or a non-zero error code on failure
*/
static int
iavf_if_rx_queues_alloc(if_ctx_t ctx, caddr_t *vaddrs, uint64_t *paddrs, int nrxqs, int nrxqsets)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
struct iavf_rx_queue *que;
int i, error = 0;
#ifdef INVARIANTS
if_softc_ctx_t scctx = vsi->shared;
MPASS(scctx->isc_nrxqsets > 0);
MPASS(nrxqs == 1);
MPASS(scctx->isc_nrxqsets == nrxqsets);
#endif
/* Allocate queue structure memory */
if (!(vsi->rx_queues =
(struct iavf_rx_queue *) malloc(sizeof(struct iavf_rx_queue) *
nrxqsets, M_IAVF, M_NOWAIT | M_ZERO))) {
device_printf(iflib_get_dev(ctx), "Unable to allocate RX ring memory\n");
error = ENOMEM;
goto fail;
}
for (i = 0, que = vsi->rx_queues; i < nrxqsets; i++, que++) {
struct rx_ring *rxr = &que->rxr;
rxr->me = i;
que->vsi = vsi;
/* get the virtual and physical address of the hardware queues */
rxr->tail = IAVF_QRX_TAIL1(rxr->me);
rxr->rx_base = (union iavf_rx_desc *)vaddrs[i * nrxqs];
rxr->rx_paddr = paddrs[i * nrxqs];
rxr->que = que;
}
return (0);
fail:
iavf_if_queues_free(ctx);
return (error);
}
/**
* iavf_if_queues_free - Free driver queue memory
* @ctx: the iflib context pointer
*
* Called by iflib to release memory allocated by the driver when setting up
* Tx and Rx queues.
*
* @remark The ordering of this function and iavf_if_detach is not guaranteed.
* It is possible for this function to be called either before or after the
* iavf_if_detach. Thus, care must be taken to ensure that either ordering of
* iavf_if_detach and iavf_if_queues_free is safe.
*/
static void
iavf_if_queues_free(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
if (!vsi->enable_head_writeback) {
struct iavf_tx_queue *que;
int i = 0;
for (i = 0, que = vsi->tx_queues; i < vsi->shared->isc_ntxqsets; i++, que++) {
struct tx_ring *txr = &que->txr;
if (txr->tx_rsq != NULL) {
free(txr->tx_rsq, M_IAVF);
txr->tx_rsq = NULL;
}
}
}
if (vsi->tx_queues != NULL) {
free(vsi->tx_queues, M_IAVF);
vsi->tx_queues = NULL;
}
if (vsi->rx_queues != NULL) {
free(vsi->rx_queues, M_IAVF);
vsi->rx_queues = NULL;
}
}
/**
* iavf_check_aq_errors - Check for AdminQ errors
* @sc: device softc
*
* Check the AdminQ registers for errors, and determine whether or not a reset
* may be required to resolve them.
*
* @post if there are errors, the VF device will be stopped and a reset will
* be requested.
*
* @returns zero if there are no issues, EBUSY if the device is resetting,
* or EIO if there are any AQ errors.
*/
static int
iavf_check_aq_errors(struct iavf_sc *sc)
{
struct iavf_hw *hw = &sc->hw;
device_t dev = sc->dev;
u32 reg, oldreg;
u8 aq_error = false;
oldreg = reg = rd32(hw, hw->aq.arq.len);
/* Check if device is in reset */
if (reg == 0xdeadbeef || reg == 0xffffffff) {
device_printf(dev, "VF in reset\n");
return (EBUSY);
}
/* Check for Admin queue errors */
if (reg & IAVF_VF_ARQLEN1_ARQVFE_MASK) {
device_printf(dev, "ARQ VF Error detected\n");
reg &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK;
aq_error = true;
}
if (reg & IAVF_VF_ARQLEN1_ARQOVFL_MASK) {
device_printf(dev, "ARQ Overflow Error detected\n");
reg &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK;
aq_error = true;
}
if (reg & IAVF_VF_ARQLEN1_ARQCRIT_MASK) {
device_printf(dev, "ARQ Critical Error detected\n");
reg &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
aq_error = true;
}
if (oldreg != reg)
wr32(hw, hw->aq.arq.len, reg);
oldreg = reg = rd32(hw, hw->aq.asq.len);
if (reg & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
device_printf(dev, "ASQ VF Error detected\n");
reg &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK;
aq_error = true;
}
if (reg & IAVF_VF_ATQLEN1_ATQOVFL_MASK) {
device_printf(dev, "ASQ Overflow Error detected\n");
reg &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK;
aq_error = true;
}
if (reg & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
device_printf(dev, "ASQ Critical Error detected\n");
reg &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
aq_error = true;
}
if (oldreg != reg)
wr32(hw, hw->aq.asq.len, reg);
return (aq_error ? EIO : 0);
}
/**
* iavf_process_adminq - Process adminq responses from the PF
* @sc: device softc
* @pending: output parameter indicating how many messages remain
*
* Process the adminq to handle replies from the PF over the virtchnl
* connection.
*
* @returns zero or an iavf_status code on failure
*/
static enum iavf_status
iavf_process_adminq(struct iavf_sc *sc, u16 *pending)
{
enum iavf_status status = IAVF_SUCCESS;
struct iavf_arq_event_info event;
struct iavf_hw *hw = &sc->hw;
struct virtchnl_msg *v_msg;
int error = 0, loop = 0;
u32 reg;
if (iavf_test_state(&sc->state, IAVF_STATE_RESET_PENDING)) {
status = IAVF_ERR_ADMIN_QUEUE_ERROR;
goto reenable_interrupt;
}
error = iavf_check_aq_errors(sc);
if (error) {
status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
goto reenable_interrupt;
}
event.buf_len = IAVF_AQ_BUF_SZ;
event.msg_buf = sc->aq_buffer;
bzero(event.msg_buf, IAVF_AQ_BUF_SZ);
v_msg = (struct virtchnl_msg *)&event.desc;
IAVF_VC_LOCK(sc);
/* clean and process any events */
do {
status = iavf_clean_arq_element(hw, &event, pending);
/*
* Also covers normal case when iavf_clean_arq_element()
* returns "IAVF_ERR_ADMIN_QUEUE_NO_WORK"
*/
if (status)
break;
iavf_vc_completion(sc, v_msg->v_opcode,
v_msg->v_retval, event.msg_buf, event.msg_len);
bzero(event.msg_buf, IAVF_AQ_BUF_SZ);
} while (*pending && (loop++ < IAVF_ADM_LIMIT));
IAVF_VC_UNLOCK(sc);
reenable_interrupt:
/* Re-enable admin queue interrupt cause */
reg = rd32(hw, IAVF_VFINT_ICR0_ENA1);
reg |= IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK;
wr32(hw, IAVF_VFINT_ICR0_ENA1, reg);
return (status);
}
/**
* iavf_if_update_admin_status - Administrative status task
* @ctx: iflib context
*
* Called by iflib to handle administrative status events. The iavf driver
* uses this to process the adminq virtchnl messages outside of interrupt
* context.
*/
static void
iavf_if_update_admin_status(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_hw *hw = &sc->hw;
u16 pending = 0;
iavf_process_adminq(sc, &pending);
iavf_update_link_status(sc);
/*
* If there are still messages to process, reschedule.
* Otherwise, re-enable the Admin Queue interrupt.
*/
if (pending > 0)
iflib_admin_intr_deferred(ctx);
else
iavf_enable_adminq_irq(hw);
}
/**
* iavf_if_multi_set - Set multicast address filters
* @ctx: iflib context
*
* Called by iflib to update the current list of multicast filters for the
* device.
*/
static void
iavf_if_multi_set(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
iavf_multi_set(sc);
}
/**
* iavf_if_mtu_set - Set the device MTU
* @ctx: iflib context
* @mtu: MTU value to set
*
* Called by iflib to set the device MTU.
*
* @returns zero on success, or EINVAL if the MTU is invalid.
*/
static int
iavf_if_mtu_set(if_ctx_t ctx, uint32_t mtu)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
IOCTL_DEBUGOUT("ioctl: SiOCSIFMTU (Set Interface MTU)");
if (mtu < IAVF_MIN_MTU || mtu > IAVF_MAX_MTU) {
device_printf(sc->dev, "mtu %d is not in valid range [%d-%d]\n",
mtu, IAVF_MIN_MTU, IAVF_MAX_MTU);
return (EINVAL);
}
vsi->shared->isc_max_frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN +
ETHER_VLAN_ENCAP_LEN;
return (0);
}
/**
* iavf_if_media_status - Report current media status
* @ctx: iflib context
* @ifmr: ifmedia request structure
*
* Called by iflib to report the current media status in the ifmr.
*/
static void
iavf_if_media_status(if_ctx_t ctx, struct ifmediareq *ifmr)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
iavf_media_status_common(sc, ifmr);
}
/**
* iavf_if_media_change - Change the current media settings
* @ctx: iflib context
*
* Called by iflib to change the current media settings.
*
* @returns zero on success, or an error code on failure.
*/
static int
iavf_if_media_change(if_ctx_t ctx)
{
return iavf_media_change_common(iflib_get_ifp(ctx));
}
/**
* iavf_if_promisc_set - Set device promiscuous mode
* @ctx: iflib context
* @flags: promiscuous configuration
*
* Called by iflib to request that the device enter promiscuous mode.
*
* @returns zero on success, or an error code on failure.
*/
static int
iavf_if_promisc_set(if_ctx_t ctx, int flags)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
return iavf_config_promisc(sc, flags);
}
/**
* iavf_if_timer - Periodic timer called by iflib
* @ctx: iflib context
* @qid: The queue being triggered
*
* Called by iflib periodically as a timer task, so that the driver can handle
* periodic work.
*
* @remark this timer is only called while the interface is up, even if
* IFLIB_ADMIN_ALWAYS_RUN is set.
*/
static void
iavf_if_timer(if_ctx_t ctx, uint16_t qid)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_hw *hw = &sc->hw;
u32 val;
if (qid != 0)
return;
/* Check for when PF triggers a VF reset */
val = rd32(hw, IAVF_VFGEN_RSTAT) &
IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
if (val != VIRTCHNL_VFR_VFACTIVE
&& val != VIRTCHNL_VFR_COMPLETED) {
iavf_dbg_info(sc, "reset in progress! (%d)\n", val);
return;
}
/* Fire off the adminq task */
iflib_admin_intr_deferred(ctx);
/* Update stats */
iavf_request_stats(sc);
}
/**
* iavf_if_vlan_register - Register a VLAN
* @ctx: iflib context
* @vtag: the VLAN to register
*
* Register a VLAN filter for a given vtag.
*/
static void
iavf_if_vlan_register(if_ctx_t ctx, u16 vtag)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
if ((vtag == 0) || (vtag > 4095)) /* Invalid */
return;
/* Add VLAN 0 to list, for untagged traffic */
if (vsi->num_vlans == 0)
iavf_add_vlan_filter(sc, 0);
iavf_add_vlan_filter(sc, vtag);
++vsi->num_vlans;
iavf_send_vc_msg(sc, IAVF_FLAG_AQ_ADD_VLAN_FILTER);
}
/**
* iavf_if_vlan_unregister - Unregister a VLAN
* @ctx: iflib context
* @vtag: the VLAN to remove
*
* Unregister (remove) a VLAN filter for the given vtag.
*/
static void
iavf_if_vlan_unregister(if_ctx_t ctx, u16 vtag)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
int i = 0;
if ((vtag == 0) || (vtag > 4095) || (vsi->num_vlans == 0)) /* Invalid */
return;
i = iavf_mark_del_vlan_filter(sc, vtag);
vsi->num_vlans -= i;
/* Remove VLAN filter 0 if the last VLAN is being removed */
if (vsi->num_vlans == 0)
i += iavf_mark_del_vlan_filter(sc, 0);
if (i > 0)
iavf_send_vc_msg(sc, IAVF_FLAG_AQ_DEL_VLAN_FILTER);
}
/**
* iavf_if_get_counter - Get network statistic counters
* @ctx: iflib context
* @cnt: The counter to obtain
*
* Called by iflib to obtain the value of the specified counter.
*
* @returns the uint64_t counter value.
*/
static uint64_t
iavf_if_get_counter(if_ctx_t ctx, ift_counter cnt)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
struct iavf_vsi *vsi = &sc->vsi;
if_t ifp = iflib_get_ifp(ctx);
switch (cnt) {
case IFCOUNTER_IPACKETS:
return (vsi->ipackets);
case IFCOUNTER_IERRORS:
return (vsi->ierrors);
case IFCOUNTER_OPACKETS:
return (vsi->opackets);
case IFCOUNTER_OERRORS:
return (vsi->oerrors);
case IFCOUNTER_COLLISIONS:
/* Collisions are by standard impossible in 40G/10G Ethernet */
return (0);
case IFCOUNTER_IBYTES:
return (vsi->ibytes);
case IFCOUNTER_OBYTES:
return (vsi->obytes);
case IFCOUNTER_IMCASTS:
return (vsi->imcasts);
case IFCOUNTER_OMCASTS:
return (vsi->omcasts);
case IFCOUNTER_IQDROPS:
return (vsi->iqdrops);
case IFCOUNTER_OQDROPS:
return (vsi->oqdrops);
case IFCOUNTER_NOPROTO:
return (vsi->noproto);
default:
return (if_get_counter_default(ifp, cnt));
}
}
/**
* iavf_free_pci_resources - Free PCI resources
* @sc: device softc
*
* Called to release the PCI resources allocated during attach. May be called
* in the error flow of attach_pre, or during detach as part of cleanup.
*/
static void
iavf_free_pci_resources(struct iavf_sc *sc)
{
struct iavf_vsi *vsi = &sc->vsi;
struct iavf_rx_queue *rx_que = vsi->rx_queues;
device_t dev = sc->dev;
/* We may get here before stations are set up */
if (rx_que == NULL)
goto early;
/* Release all interrupts */
iflib_irq_free(vsi->ctx, &vsi->irq);
for (int i = 0; i < vsi->num_rx_queues; i++, rx_que++)
iflib_irq_free(vsi->ctx, &rx_que->que_irq);
early:
if (sc->pci_mem != NULL)
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->pci_mem), sc->pci_mem);
}
/**
* iavf_setup_interface - Setup the device interface
* @sc: device softc
*
* Called to setup some device interface settings, such as the ifmedia
* structure.
*/
static void
iavf_setup_interface(struct iavf_sc *sc)
{
struct iavf_vsi *vsi = &sc->vsi;
if_ctx_t ctx = vsi->ctx;
struct ifnet *ifp = iflib_get_ifp(ctx);
iavf_dbg_init(sc, "begin\n");
vsi->shared->isc_max_frame_size =
ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN
+ ETHER_VLAN_ENCAP_LEN;
iavf_set_initial_baudrate(ifp);
ifmedia_add(sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(sc->media, IFM_ETHER | IFM_AUTO);
}
/**
* iavf_msix_adminq - Admin Queue interrupt handler
* @arg: void pointer to the device softc
*
* Interrupt handler for the non-queue interrupt causes. Primarily this will
* be the adminq interrupt, but also includes other miscellaneous causes.
*
* @returns FILTER_SCHEDULE_THREAD if the admin task needs to be run, otherwise
* returns FITLER_HANDLED.
*/
static int
iavf_msix_adminq(void *arg)
{
struct iavf_sc *sc = (struct iavf_sc *)arg;
struct iavf_hw *hw = &sc->hw;
u32 reg, mask;
++sc->admin_irq;
if (!iavf_test_state(&sc->state, IAVF_STATE_INITIALIZED))
return (FILTER_HANDLED);
reg = rd32(hw, IAVF_VFINT_ICR01);
/*
* For masking off interrupt causes that need to be handled before
* they can be re-enabled
*/
mask = rd32(hw, IAVF_VFINT_ICR0_ENA1);
/* Check on the cause */
if (reg & IAVF_VFINT_ICR01_ADMINQ_MASK) {
mask &= ~IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK;
/* Process messages outside of the iflib context lock */
taskqueue_enqueue(sc->vc_tq, &sc->vc_task);
}
wr32(hw, IAVF_VFINT_ICR0_ENA1, mask);
iavf_enable_adminq_irq(hw);
return (FILTER_HANDLED);
}
/**
* iavf_enable_intr - Enable device interrupts
* @vsi: the main VSI
*
* Called to enable all queue interrupts.
*/
void
iavf_enable_intr(struct iavf_vsi *vsi)
{
struct iavf_hw *hw = vsi->hw;
struct iavf_rx_queue *que = vsi->rx_queues;
iavf_enable_adminq_irq(hw);
for (int i = 0; i < vsi->num_rx_queues; i++, que++)
iavf_enable_queue_irq(hw, que->rxr.me);
}
/**
* iavf_disable_intr - Disable device interrupts
* @vsi: the main VSI
*
* Called to disable all interrupts
*
* @remark we never disable the admin status interrupt.
*/
void
iavf_disable_intr(struct iavf_vsi *vsi)
{
struct iavf_hw *hw = vsi->hw;
struct iavf_rx_queue *que = vsi->rx_queues;
for (int i = 0; i < vsi->num_rx_queues; i++, que++)
iavf_disable_queue_irq(hw, que->rxr.me);
}
/**
* iavf_enable_queue_irq - Enable IRQ register for a queue interrupt
* @hw: hardware structure
* @id: IRQ vector to enable
*
* Writes the IAVF_VFINT_DYN_CTLN1 register to enable a given IRQ interrupt.
*/
static void
iavf_enable_queue_irq(struct iavf_hw *hw, int id)
{
u32 reg;
reg = IAVF_VFINT_DYN_CTLN1_INTENA_MASK |
IAVF_VFINT_DYN_CTLN1_CLEARPBA_MASK |
IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK;
wr32(hw, IAVF_VFINT_DYN_CTLN1(id), reg);
}
/**
* iavf_disable_queue_irq - Disable IRQ register for a queue interrupt
* @hw: hardware structure
* @id: IRQ vector to disable
*
* Writes the IAVF_VFINT_DYN_CTLN1 register to disable a given IRQ interrupt.
*/
static void
iavf_disable_queue_irq(struct iavf_hw *hw, int id)
{
wr32(hw, IAVF_VFINT_DYN_CTLN1(id),
IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK);
rd32(hw, IAVF_VFGEN_RSTAT);
}
/**
* iavf_configure_itr - Get initial ITR values from tunable values.
* @sc: device softc
*
* Load the initial tunable values for the ITR configuration.
*/
static void
iavf_configure_itr(struct iavf_sc *sc)
{
iavf_configure_tx_itr(sc);
iavf_configure_rx_itr(sc);
}
/**
* iavf_set_queue_rx_itr - Update Rx ITR value
* @que: Rx queue to update
*
* Provide a update to the queue RX interrupt moderation value.
*/
static void
iavf_set_queue_rx_itr(struct iavf_rx_queue *que)
{
struct iavf_vsi *vsi = que->vsi;
struct iavf_hw *hw = vsi->hw;
struct rx_ring *rxr = &que->rxr;
/* Idle, do nothing */
if (rxr->bytes == 0)
return;
/* Update the hardware if needed */
if (rxr->itr != vsi->rx_itr_setting) {
rxr->itr = vsi->rx_itr_setting;
wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR,
que->rxr.me), rxr->itr);
}
}
/**
* iavf_msix_que - Main Rx queue interrupt handler
* @arg: void pointer to the Rx queue
*
* Main MSI-X interrupt handler for Rx queue interrupts
*
* @returns FILTER_SCHEDULE_THREAD if the main thread for Rx needs to run,
* otherwise returns FILTER_HANDLED.
*/
static int
iavf_msix_que(void *arg)
{
struct iavf_rx_queue *rx_que = (struct iavf_rx_queue *)arg;
struct iavf_sc *sc = rx_que->vsi->back;
++rx_que->irqs;
if (!iavf_test_state(&sc->state, IAVF_STATE_RUNNING))
return (FILTER_HANDLED);
iavf_set_queue_rx_itr(rx_que);
return (FILTER_SCHEDULE_THREAD);
}
/**
* iavf_update_link_status - Update iflib Link status
* @sc: device softc
*
* Notify the iflib stack of changes in link status. Called after the device
* receives a virtchnl message indicating a change in link status.
*/
void
iavf_update_link_status(struct iavf_sc *sc)
{
struct iavf_vsi *vsi = &sc->vsi;
u64 baudrate;
if (sc->link_up){
if (vsi->link_active == FALSE) {
vsi->link_active = TRUE;
baudrate = iavf_baudrate_from_link_speed(sc);
iavf_dbg_info(sc, "baudrate: %llu\n", (unsigned long long)baudrate);
iflib_link_state_change(vsi->ctx, LINK_STATE_UP, baudrate);
}
} else { /* Link down */
if (vsi->link_active == TRUE) {
vsi->link_active = FALSE;
iflib_link_state_change(vsi->ctx, LINK_STATE_DOWN, 0);
}
}
}
/**
* iavf_stop - Stop the interface
* @sc: device softc
*
* This routine disables all traffic on the adapter by disabling interrupts
* and sending a message to the PF to tell it to stop the hardware
* Tx/Rx LAN queues.
*/
static void
iavf_stop(struct iavf_sc *sc)
{
struct ifnet *ifp;
ifp = sc->vsi.ifp;
iavf_clear_state(&sc->state, IAVF_STATE_RUNNING);
iavf_disable_intr(&sc->vsi);
iavf_disable_queues_with_retries(sc);
}
/**
* iavf_if_stop - iflib stop handler
* @ctx: iflib context
*
* Call iavf_stop to stop the interface.
*/
static void
iavf_if_stop(if_ctx_t ctx)
{
struct iavf_sc *sc = iavf_sc_from_ctx(ctx);
iavf_stop(sc);
}
/**
* iavf_del_mac_filter - Delete a MAC filter
* @sc: device softc
* @macaddr: MAC address to remove
*
* Marks a MAC filter for deletion.
*
* @returns zero if the filter existed, or ENOENT if it did not.
*/
static int
iavf_del_mac_filter(struct iavf_sc *sc, u8 *macaddr)
{
struct iavf_mac_filter *f;
f = iavf_find_mac_filter(sc, macaddr);
if (f == NULL)
return (ENOENT);
f->flags |= IAVF_FILTER_DEL;
return (0);
}
/**
* iavf_init_tx_rsqs - Initialize Report Status array
* @vsi: the main VSI
*
* Set the Report Status queue fields to zero in order to initialize the
* queues for transmit.
*/
void
iavf_init_tx_rsqs(struct iavf_vsi *vsi)
{
if_softc_ctx_t scctx = vsi->shared;
struct iavf_tx_queue *tx_que;
int i, j;
for (i = 0, tx_que = vsi->tx_queues; i < vsi->num_tx_queues; i++, tx_que++) {
struct tx_ring *txr = &tx_que->txr;
txr->tx_rs_cidx = txr->tx_rs_pidx;
/* Initialize the last processed descriptor to be the end of
* the ring, rather than the start, so that we avoid an
* off-by-one error when calculating how many descriptors are
* done in the credits_update function.
*/
txr->tx_cidx_processed = scctx->isc_ntxd[0] - 1;
for (j = 0; j < scctx->isc_ntxd[0]; j++)
txr->tx_rsq[j] = QIDX_INVALID;
}
}
/**
* iavf_init_tx_cidx - Initialize Tx cidx values
* @vsi: the main VSI
*
* Initialize the tx_cidx_processed values for Tx queues in order to
* initialize the Tx queues for transmit.
*/
void
iavf_init_tx_cidx(struct iavf_vsi *vsi)
{
if_softc_ctx_t scctx = vsi->shared;
struct iavf_tx_queue *tx_que;
int i;
for (i = 0, tx_que = vsi->tx_queues; i < vsi->num_tx_queues; i++, tx_que++) {
struct tx_ring *txr = &tx_que->txr;
txr->tx_cidx_processed = scctx->isc_ntxd[0] - 1;
}
}
/**
* iavf_add_device_sysctls - Add device sysctls for configuration
* @sc: device softc
*
* Add the main sysctl nodes and sysctls for device configuration.
*/
static void
iavf_add_device_sysctls(struct iavf_sc *sc)
{
struct iavf_vsi *vsi = &sc->vsi;
device_t dev = sc->dev;
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev);
struct sysctl_oid_list *debug_list;
iavf_add_device_sysctls_common(sc);
debug_list = iavf_create_debug_sysctl_tree(sc);
iavf_add_debug_sysctls_common(sc, debug_list);
SYSCTL_ADD_PROC(ctx, debug_list,
OID_AUTO, "queue_interrupt_table", CTLTYPE_STRING | CTLFLAG_RD,
sc, 0, iavf_sysctl_queue_interrupt_table, "A", "View MSI-X indices for TX/RX queues");
#ifdef IAVF_DEBUG
SYSCTL_ADD_PROC(ctx, debug_list,
OID_AUTO, "do_vf_reset", CTLTYPE_INT | CTLFLAG_WR,
sc, 0, iavf_sysctl_vf_reset, "A", "Request a VF reset from PF");
SYSCTL_ADD_PROC(ctx, debug_list,
OID_AUTO, "do_vflr_reset", CTLTYPE_INT | CTLFLAG_WR,
sc, 0, iavf_sysctl_vflr_reset, "A", "Request a VFLR reset from HW");
#endif
/* Add stats sysctls */
iavf_add_vsi_sysctls(dev, vsi, ctx, "vsi");
iavf_add_queues_sysctls(dev, vsi);
}
/**
* iavf_add_queues_sysctls - Add per-queue sysctls
* @dev: device pointer
* @vsi: the main VSI
*
* Add sysctls for each Tx and Rx queue.
*/
void
iavf_add_queues_sysctls(device_t dev, struct iavf_vsi *vsi)
{
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev);
struct sysctl_oid_list *vsi_list, *queue_list;
struct sysctl_oid *queue_node;
char queue_namebuf[32];
struct iavf_rx_queue *rx_que;
struct iavf_tx_queue *tx_que;
struct tx_ring *txr;
struct rx_ring *rxr;
vsi_list = SYSCTL_CHILDREN(vsi->vsi_node);
/* Queue statistics */
for (int q = 0; q < vsi->num_rx_queues; q++) {
bzero(queue_namebuf, sizeof(queue_namebuf));
snprintf(queue_namebuf, IAVF_QUEUE_NAME_LEN, "rxq%02d", q);
queue_node = SYSCTL_ADD_NODE(ctx, vsi_list,
OID_AUTO, queue_namebuf, CTLFLAG_RD, NULL, "RX Queue #");
queue_list = SYSCTL_CHILDREN(queue_node);
rx_que = &(vsi->rx_queues[q]);
rxr = &(rx_que->rxr);
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "irqs",
CTLFLAG_RD, &(rx_que->irqs),
"irqs on this queue (both Tx and Rx)");
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "packets",
CTLFLAG_RD, &(rxr->rx_packets),
"Queue Packets Received");
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "bytes",
CTLFLAG_RD, &(rxr->rx_bytes),
"Queue Bytes Received");
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "desc_err",
CTLFLAG_RD, &(rxr->desc_errs),
"Queue Rx Descriptor Errors");
SYSCTL_ADD_UINT(ctx, queue_list, OID_AUTO, "itr",
CTLFLAG_RD, &(rxr->itr), 0,
"Queue Rx ITR Interval");
}
for (int q = 0; q < vsi->num_tx_queues; q++) {
bzero(queue_namebuf, sizeof(queue_namebuf));
snprintf(queue_namebuf, IAVF_QUEUE_NAME_LEN, "txq%02d", q);
queue_node = SYSCTL_ADD_NODE(ctx, vsi_list,
OID_AUTO, queue_namebuf, CTLFLAG_RD, NULL, "TX Queue #");
queue_list = SYSCTL_CHILDREN(queue_node);
tx_que = &(vsi->tx_queues[q]);
txr = &(tx_que->txr);
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tso",
CTLFLAG_RD, &(tx_que->tso),
"TSO");
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "mss_too_small",
CTLFLAG_RD, &(txr->mss_too_small),
"TSO sends with an MSS less than 64");
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "packets",
CTLFLAG_RD, &(txr->tx_packets),
"Queue Packets Transmitted");
SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "bytes",
CTLFLAG_RD, &(txr->tx_bytes),
"Queue Bytes Transmitted");
SYSCTL_ADD_UINT(ctx, queue_list, OID_AUTO, "itr",
CTLFLAG_RD, &(txr->itr), 0,
"Queue Tx ITR Interval");
}
}
/**
* iavf_driver_is_detaching - Check if the driver is detaching/unloading
* @sc: device private softc
*
* @returns true if the driver is detaching, false otherwise.
*
* @remark on newer kernels, take advantage of iflib_in_detach in order to
* report detachment correctly as early as possible.
*
* @remark this function is used by various code paths that want to avoid
* running if the driver is about to be removed. This includes sysctls and
* other driver access points. Note that it does not fully resolve
* detach-based race conditions as it is possible for a thread to race with
* iflib_in_detach.
*/
bool
iavf_driver_is_detaching(struct iavf_sc *sc)
{
return (!iavf_test_state(&sc->state, IAVF_STATE_INITIALIZED) ||
iflib_in_detach(sc->vsi.ctx));
}
/**
* iavf_sysctl_queue_interrupt_table - Sysctl for displaying Tx queue mapping
* @oidp: sysctl oid structure
* @arg1: void pointer to device softc
* @arg2: unused
* @req: sysctl request pointer
*
* Print out mapping of TX queue indexes and Rx queue indexes to MSI-X vectors.
*
* @returns zero on success, or an error code on failure.
*/
static int
iavf_sysctl_queue_interrupt_table(SYSCTL_HANDLER_ARGS)
{
struct iavf_sc *sc = (struct iavf_sc *)arg1;
struct iavf_vsi *vsi = &sc->vsi;
device_t dev = sc->dev;
struct sbuf *buf;
int error = 0;
struct iavf_rx_queue *rx_que;
struct iavf_tx_queue *tx_que;
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_cat(buf, "\n");
for (int i = 0; i < vsi->num_rx_queues; i++) {
rx_que = &vsi->rx_queues[i];
sbuf_printf(buf, "(rxq %3d): %d\n", i, rx_que->msix);
}
for (int i = 0; i < vsi->num_tx_queues; i++) {
tx_que = &vsi->tx_queues[i];
sbuf_printf(buf, "(txq %3d): %d\n", i, tx_que->msix);
}
error = sbuf_finish(buf);
if (error)
device_printf(dev, "Error finishing sbuf: %d\n", error);
sbuf_delete(buf);
return (error);
}
#ifdef IAVF_DEBUG
#define CTX_ACTIVE(ctx) ((if_getdrvflags(iflib_get_ifp(ctx)) & IFF_DRV_RUNNING))
/**
* iavf_sysctl_vf_reset - Request a VF reset
* @oidp: sysctl oid pointer
* @arg1: void pointer to device softc
* @arg2: unused
* @req: sysctl request pointer
*
* Request a VF reset for the device.
*
* @returns zero on success, or an error code on failure.
*/
static int
iavf_sysctl_vf_reset(SYSCTL_HANDLER_ARGS)
{
struct iavf_sc *sc = (struct iavf_sc *)arg1;
int do_reset = 0, error = 0;
UNREFERENCED_PARAMETER(arg2);
if (iavf_driver_is_detaching(sc))
return (ESHUTDOWN);
error = sysctl_handle_int(oidp, &do_reset, 0, req);
if ((error) || (req->newptr == NULL))
return (error);
if (do_reset == 1) {
iavf_reset(sc);
if (CTX_ACTIVE(sc->vsi.ctx))
iflib_request_reset(sc->vsi.ctx);
}
return (error);
}
/**
* iavf_sysctl_vflr_reset - Trigger a PCIe FLR for the device
* @oidp: sysctl oid pointer
* @arg1: void pointer to device softc
* @arg2: unused
* @req: sysctl request pointer
*
* Sysctl callback to trigger a PCIe FLR.
*
* @returns zero on success, or an error code on failure.
*/
static int
iavf_sysctl_vflr_reset(SYSCTL_HANDLER_ARGS)
{
struct iavf_sc *sc = (struct iavf_sc *)arg1;
device_t dev = sc->dev;
int do_reset = 0, error = 0;
UNREFERENCED_PARAMETER(arg2);
if (iavf_driver_is_detaching(sc))
return (ESHUTDOWN);
error = sysctl_handle_int(oidp, &do_reset, 0, req);
if ((error) || (req->newptr == NULL))
return (error);
if (do_reset == 1) {
if (!pcie_flr(dev, max(pcie_get_max_completion_timeout(dev) / 1000, 10), true)) {
device_printf(dev, "PCIE FLR failed\n");
error = EIO;
}
else if (CTX_ACTIVE(sc->vsi.ctx))
iflib_request_reset(sc->vsi.ctx);
}
return (error);
}
#undef CTX_ACTIVE
#endif