// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2013 - 2018 Intel Corporation. */ #ifdef CONFIG_DEBUG_FS #include <linux/fs.h> #include <linux/debugfs.h> #include "i40e.h" static struct dentry *i40e_dbg_root; enum ring_type { RING_TYPE_RX, RING_TYPE_TX, RING_TYPE_XDP }; /** * i40e_dbg_find_vsi - searches for the vsi with the given seid * @pf: the PF structure to search for the vsi * @seid: seid of the vsi it is searching for **/ static struct i40e_vsi *i40e_dbg_find_vsi(struct i40e_pf *pf, int seid) { int i; if (seid < 0) dev_info(&pf->pdev->dev, "%d: bad seid\n", seid); else for (i = 0; i < pf->num_alloc_vsi; i++) if (pf->vsi[i] && (pf->vsi[i]->seid == seid)) return pf->vsi[i]; return NULL; } /** * i40e_dbg_find_veb - searches for the veb with the given seid * @pf: the PF structure to search for the veb * @seid: seid of the veb it is searching for **/ static struct i40e_veb *i40e_dbg_find_veb(struct i40e_pf *pf, int seid) { int i; for (i = 0; i < I40E_MAX_VEB; i++) if (pf->veb[i] && pf->veb[i]->seid == seid) return pf->veb[i]; return NULL; } /************************************************************** * command * The command entry in debugfs is for giving the driver commands * to be executed - these may be for changing the internal switch * setup, adding or removing filters, or other things. Many of * these will be useful for some forms of unit testing. **************************************************************/ static char i40e_dbg_command_buf[256] = ""; /** * i40e_dbg_command_read - read for command datum * @filp: the opened file * @buffer: where to write the data for the user to read * @count: the size of the user's buffer * @ppos: file position offset **/ static ssize_t i40e_dbg_command_read(struct file *filp, char __user *buffer, size_t count, loff_t *ppos) { struct i40e_pf *pf = filp->private_data; int bytes_not_copied; int buf_size = 256; char *buf; int len; /* don't allow partial reads */ if (*ppos != 0) return 0; if (count < buf_size) return -ENOSPC; buf = kzalloc(buf_size, GFP_KERNEL); if (!buf) return -ENOSPC; len = snprintf(buf, buf_size, "%s: %s\n", pf->vsi[pf->lan_vsi]->netdev->name, i40e_dbg_command_buf); bytes_not_copied = copy_to_user(buffer, buf, len); kfree(buf); if (bytes_not_copied) return -EFAULT; *ppos = len; return len; } static char *i40e_filter_state_string[] = { "INVALID", "NEW", "ACTIVE", "FAILED", "REMOVE", }; /** * i40e_dbg_dump_vsi_seid - handles dump vsi seid write into command datum * @pf: the i40e_pf created in command write * @seid: the seid the user put in **/ static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid) { struct rtnl_link_stats64 *nstat; struct i40e_mac_filter *f; struct i40e_vsi *vsi; int i, bkt; vsi = i40e_dbg_find_vsi(pf, seid); if (!vsi) { dev_info(&pf->pdev->dev, "dump %d: seid not found\n", seid); return; } dev_info(&pf->pdev->dev, "vsi seid %d\n", seid); if (vsi->netdev) { struct net_device *nd = vsi->netdev; dev_info(&pf->pdev->dev, " netdev: name = %s, state = %lu, flags = 0x%08x\n", nd->name, nd->state, nd->flags); dev_info(&pf->pdev->dev, " features = 0x%08lx\n", (unsigned long int)nd->features); dev_info(&pf->pdev->dev, " hw_features = 0x%08lx\n", (unsigned long int)nd->hw_features); dev_info(&pf->pdev->dev, " vlan_features = 0x%08lx\n", (unsigned long int)nd->vlan_features); } dev_info(&pf->pdev->dev, " flags = 0x%08lx, netdev_registered = %i, current_netdev_flags = 0x%04x\n", vsi->flags, vsi->netdev_registered, vsi->current_netdev_flags); for (i = 0; i < BITS_TO_LONGS(__I40E_VSI_STATE_SIZE__); i++) dev_info(&pf->pdev->dev, " state[%d] = %08lx\n", i, vsi->state[i]); if (vsi == pf->vsi[pf->lan_vsi]) dev_info(&pf->pdev->dev, " MAC address: %pM SAN MAC: %pM Port MAC: %pM\n", pf->hw.mac.addr, pf->hw.mac.san_addr, pf->hw.mac.port_addr); hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) { dev_info(&pf->pdev->dev, " mac_filter_hash: %pM vid=%d, state %s\n", f->macaddr, f->vlan, i40e_filter_state_string[f->state]); } dev_info(&pf->pdev->dev, " active_filters %u, promisc_threshold %u, overflow promisc %s\n", vsi->active_filters, vsi->promisc_threshold, (test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state) ? "ON" : "OFF")); nstat = i40e_get_vsi_stats_struct(vsi); dev_info(&pf->pdev->dev, " net_stats: rx_packets = %lu, rx_bytes = %lu, rx_errors = %lu, rx_dropped = %lu\n", (unsigned long int)nstat->rx_packets, (unsigned long int)nstat->rx_bytes, (unsigned long int)nstat->rx_errors, (unsigned long int)nstat->rx_dropped); dev_info(&pf->pdev->dev, " net_stats: tx_packets = %lu, tx_bytes = %lu, tx_errors = %lu, tx_dropped = %lu\n", (unsigned long int)nstat->tx_packets, (unsigned long int)nstat->tx_bytes, (unsigned long int)nstat->tx_errors, (unsigned long int)nstat->tx_dropped); dev_info(&pf->pdev->dev, " net_stats: multicast = %lu, collisions = %lu\n", (unsigned long int)nstat->multicast, (unsigned long int)nstat->collisions); dev_info(&pf->pdev->dev, " net_stats: rx_length_errors = %lu, rx_over_errors = %lu, rx_crc_errors = %lu\n", (unsigned long int)nstat->rx_length_errors, (unsigned long int)nstat->rx_over_errors, (unsigned long int)nstat->rx_crc_errors); dev_info(&pf->pdev->dev, " net_stats: rx_frame_errors = %lu, rx_fifo_errors = %lu, rx_missed_errors = %lu\n", (unsigned long int)nstat->rx_frame_errors, (unsigned long int)nstat->rx_fifo_errors, (unsigned long int)nstat->rx_missed_errors); dev_info(&pf->pdev->dev, " net_stats: tx_aborted_errors = %lu, tx_carrier_errors = %lu, tx_fifo_errors = %lu\n", (unsigned long int)nstat->tx_aborted_errors, (unsigned long int)nstat->tx_carrier_errors, (unsigned long int)nstat->tx_fifo_errors); dev_info(&pf->pdev->dev, " net_stats: tx_heartbeat_errors = %lu, tx_window_errors = %lu\n", (unsigned long int)nstat->tx_heartbeat_errors, (unsigned long int)nstat->tx_window_errors); dev_info(&pf->pdev->dev, " net_stats: rx_compressed = %lu, tx_compressed = %lu\n", (unsigned long int)nstat->rx_compressed, (unsigned long int)nstat->tx_compressed); dev_info(&pf->pdev->dev, " net_stats_offsets: rx_packets = %lu, rx_bytes = %lu, rx_errors = %lu, rx_dropped = %lu\n", (unsigned long int)vsi->net_stats_offsets.rx_packets, (unsigned long int)vsi->net_stats_offsets.rx_bytes, (unsigned long int)vsi->net_stats_offsets.rx_errors, (unsigned long int)vsi->net_stats_offsets.rx_dropped); dev_info(&pf->pdev->dev, " net_stats_offsets: tx_packets = %lu, tx_bytes = %lu, tx_errors = %lu, tx_dropped = %lu\n", (unsigned long int)vsi->net_stats_offsets.tx_packets, (unsigned long int)vsi->net_stats_offsets.tx_bytes, (unsigned long int)vsi->net_stats_offsets.tx_errors, (unsigned long int)vsi->net_stats_offsets.tx_dropped); dev_info(&pf->pdev->dev, " net_stats_offsets: multicast = %lu, collisions = %lu\n", (unsigned long int)vsi->net_stats_offsets.multicast, (unsigned long int)vsi->net_stats_offsets.collisions); dev_info(&pf->pdev->dev, " net_stats_offsets: rx_length_errors = %lu, rx_over_errors = %lu, rx_crc_errors = %lu\n", (unsigned long int)vsi->net_stats_offsets.rx_length_errors, (unsigned long int)vsi->net_stats_offsets.rx_over_errors, (unsigned long int)vsi->net_stats_offsets.rx_crc_errors); dev_info(&pf->pdev->dev, " net_stats_offsets: rx_frame_errors = %lu, rx_fifo_errors = %lu, rx_missed_errors = %lu\n", (unsigned long int)vsi->net_stats_offsets.rx_frame_errors, (unsigned long int)vsi->net_stats_offsets.rx_fifo_errors, (unsigned long int)vsi->net_stats_offsets.rx_missed_errors); dev_info(&pf->pdev->dev, " net_stats_offsets: tx_aborted_errors = %lu, tx_carrier_errors = %lu, tx_fifo_errors = %lu\n", (unsigned long int)vsi->net_stats_offsets.tx_aborted_errors, (unsigned long int)vsi->net_stats_offsets.tx_carrier_errors, (unsigned long int)vsi->net_stats_offsets.tx_fifo_errors); dev_info(&pf->pdev->dev, " net_stats_offsets: tx_heartbeat_errors = %lu, tx_window_errors = %lu\n", (unsigned long int)vsi->net_stats_offsets.tx_heartbeat_errors, (unsigned long int)vsi->net_stats_offsets.tx_window_errors); dev_info(&pf->pdev->dev, " net_stats_offsets: rx_compressed = %lu, tx_compressed = %lu\n", (unsigned long int)vsi->net_stats_offsets.rx_compressed, (unsigned long int)vsi->net_stats_offsets.tx_compressed); dev_info(&pf->pdev->dev, " tx_restart = %llu, tx_busy = %llu, rx_buf_failed = %llu, rx_page_failed = %llu\n", vsi->tx_restart, vsi->tx_busy, vsi->rx_buf_failed, vsi->rx_page_failed); rcu_read_lock(); for (i = 0; i < vsi->num_queue_pairs; i++) { struct i40e_ring *rx_ring = READ_ONCE(vsi->rx_rings[i]); if (!rx_ring) continue; dev_info(&pf->pdev->dev, " rx_rings[%i]: state = %lu, queue_index = %d, reg_idx = %d\n", i, *rx_ring->state, rx_ring->queue_index, rx_ring->reg_idx); dev_info(&pf->pdev->dev, " rx_rings[%i]: rx_buf_len = %d\n", i, rx_ring->rx_buf_len); dev_info(&pf->pdev->dev, " rx_rings[%i]: next_to_use = %d, next_to_clean = %d, ring_active = %i\n", i, rx_ring->next_to_use, rx_ring->next_to_clean, rx_ring->ring_active); dev_info(&pf->pdev->dev, " rx_rings[%i]: rx_stats: packets = %lld, bytes = %lld, non_eop_descs = %lld\n", i, rx_ring->stats.packets, rx_ring->stats.bytes, rx_ring->rx_stats.non_eop_descs); dev_info(&pf->pdev->dev, " rx_rings[%i]: rx_stats: alloc_page_failed = %lld, alloc_buff_failed = %lld\n", i, rx_ring->rx_stats.alloc_page_failed, rx_ring->rx_stats.alloc_buff_failed); dev_info(&pf->pdev->dev, " rx_rings[%i]: rx_stats: realloc_count = 0, page_reuse_count = %lld\n", i, rx_ring->rx_stats.page_reuse_count); dev_info(&pf->pdev->dev, " rx_rings[%i]: size = %i\n", i, rx_ring->size); dev_info(&pf->pdev->dev, " rx_rings[%i]: itr_setting = %d (%s)\n", i, rx_ring->itr_setting, ITR_IS_DYNAMIC(rx_ring->itr_setting) ? "dynamic" : "fixed"); } for (i = 0; i < vsi->num_queue_pairs; i++) { struct i40e_ring *tx_ring = READ_ONCE(vsi->tx_rings[i]); if (!tx_ring) continue; dev_info(&pf->pdev->dev, " tx_rings[%i]: state = %lu, queue_index = %d, reg_idx = %d\n", i, *tx_ring->state, tx_ring->queue_index, tx_ring->reg_idx); dev_info(&pf->pdev->dev, " tx_rings[%i]: next_to_use = %d, next_to_clean = %d, ring_active = %i\n", i, tx_ring->next_to_use, tx_ring->next_to_clean, tx_ring->ring_active); dev_info(&pf->pdev->dev, " tx_rings[%i]: tx_stats: packets = %lld, bytes = %lld, restart_queue = %lld\n", i, tx_ring->stats.packets, tx_ring->stats.bytes, tx_ring->tx_stats.restart_queue); dev_info(&pf->pdev->dev, " tx_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n", i, tx_ring->tx_stats.tx_busy, tx_ring->tx_stats.tx_done_old); dev_info(&pf->pdev->dev, " tx_rings[%i]: size = %i\n", i, tx_ring->size); dev_info(&pf->pdev->dev, " tx_rings[%i]: DCB tc = %d\n", i, tx_ring->dcb_tc); dev_info(&pf->pdev->dev, " tx_rings[%i]: itr_setting = %d (%s)\n", i, tx_ring->itr_setting, ITR_IS_DYNAMIC(tx_ring->itr_setting) ? "dynamic" : "fixed"); } if (i40e_enabled_xdp_vsi(vsi)) { for (i = 0; i < vsi->num_queue_pairs; i++) { struct i40e_ring *xdp_ring = READ_ONCE(vsi->xdp_rings[i]); if (!xdp_ring) continue; dev_info(&pf->pdev->dev, " xdp_rings[%i]: state = %lu, queue_index = %d, reg_idx = %d\n", i, *xdp_ring->state, xdp_ring->queue_index, xdp_ring->reg_idx); dev_info(&pf->pdev->dev, " xdp_rings[%i]: next_to_use = %d, next_to_clean = %d, ring_active = %i\n", i, xdp_ring->next_to_use, xdp_ring->next_to_clean, xdp_ring->ring_active); dev_info(&pf->pdev->dev, " xdp_rings[%i]: tx_stats: packets = %lld, bytes = %lld, restart_queue = %lld\n", i, xdp_ring->stats.packets, xdp_ring->stats.bytes, xdp_ring->tx_stats.restart_queue); dev_info(&pf->pdev->dev, " xdp_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n", i, xdp_ring->tx_stats.tx_busy, xdp_ring->tx_stats.tx_done_old); dev_info(&pf->pdev->dev, " xdp_rings[%i]: size = %i\n", i, xdp_ring->size); dev_info(&pf->pdev->dev, " xdp_rings[%i]: DCB tc = %d\n", i, xdp_ring->dcb_tc); dev_info(&pf->pdev->dev, " xdp_rings[%i]: itr_setting = %d (%s)\n", i, xdp_ring->itr_setting, ITR_IS_DYNAMIC(xdp_ring->itr_setting) ? "dynamic" : "fixed"); } } rcu_read_unlock(); dev_info(&pf->pdev->dev, " work_limit = %d\n", vsi->work_limit); dev_info(&pf->pdev->dev, " max_frame = %d, rx_buf_len = %d dtype = %d\n", vsi->max_frame, vsi->rx_buf_len, 0); dev_info(&pf->pdev->dev, " num_q_vectors = %i, base_vector = %i\n", vsi->num_q_vectors, vsi->base_vector); dev_info(&pf->pdev->dev, " seid = %d, id = %d, uplink_seid = %d\n", vsi->seid, vsi->id, vsi->uplink_seid); dev_info(&pf->pdev->dev, " base_queue = %d, num_queue_pairs = %d, num_tx_desc = %d, num_rx_desc = %d\n", vsi->base_queue, vsi->num_queue_pairs, vsi->num_tx_desc, vsi->num_rx_desc); dev_info(&pf->pdev->dev, " type = %i\n", vsi->type); if (vsi->type == I40E_VSI_SRIOV) dev_info(&pf->pdev->dev, " VF ID = %i\n", vsi->vf_id); dev_info(&pf->pdev->dev, " info: valid_sections = 0x%04x, switch_id = 0x%04x\n", vsi->info.valid_sections, vsi->info.switch_id); dev_info(&pf->pdev->dev, " info: sw_reserved[] = 0x%02x 0x%02x\n", vsi->info.sw_reserved[0], vsi->info.sw_reserved[1]); dev_info(&pf->pdev->dev, " info: sec_flags = 0x%02x, sec_reserved = 0x%02x\n", vsi->info.sec_flags, vsi->info.sec_reserved); dev_info(&pf->pdev->dev, " info: pvid = 0x%04x, fcoe_pvid = 0x%04x, port_vlan_flags = 0x%02x\n", vsi->info.pvid, vsi->info.fcoe_pvid, vsi->info.port_vlan_flags); dev_info(&pf->pdev->dev, " info: pvlan_reserved[] = 0x%02x 0x%02x 0x%02x\n", vsi->info.pvlan_reserved[0], vsi->info.pvlan_reserved[1], vsi->info.pvlan_reserved[2]); dev_info(&pf->pdev->dev, " info: ingress_table = 0x%08x, egress_table = 0x%08x\n", vsi->info.ingress_table, vsi->info.egress_table); dev_info(&pf->pdev->dev, " info: cas_pv_stag = 0x%04x, cas_pv_flags= 0x%02x, cas_pv_reserved = 0x%02x\n", vsi->info.cas_pv_tag, vsi->info.cas_pv_flags, vsi->info.cas_pv_reserved); dev_info(&pf->pdev->dev, " info: queue_mapping[0..7 ] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n", vsi->info.queue_mapping[0], vsi->info.queue_mapping[1], vsi->info.queue_mapping[2], vsi->info.queue_mapping[3], vsi->info.queue_mapping[4], vsi->info.queue_mapping[5], vsi->info.queue_mapping[6], vsi->info.queue_mapping[7]); dev_info(&pf->pdev->dev, " info: queue_mapping[8..15] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n", vsi->info.queue_mapping[8], vsi->info.queue_mapping[9], vsi->info.queue_mapping[10], vsi->info.queue_mapping[11], vsi->info.queue_mapping[12], vsi->info.queue_mapping[13], vsi->info.queue_mapping[14], vsi->info.queue_mapping[15]); dev_info(&pf->pdev->dev, " info: tc_mapping[] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n", vsi->info.tc_mapping[0], vsi->info.tc_mapping[1], vsi->info.tc_mapping[2], vsi->info.tc_mapping[3], vsi->info.tc_mapping[4], vsi->info.tc_mapping[5], vsi->info.tc_mapping[6], vsi->info.tc_mapping[7]); dev_info(&pf->pdev->dev, " info: queueing_opt_flags = 0x%02x queueing_opt_reserved[0..2] = 0x%02x 0x%02x 0x%02x\n", vsi->info.queueing_opt_flags, vsi->info.queueing_opt_reserved[0], vsi->info.queueing_opt_reserved[1], vsi->info.queueing_opt_reserved[2]); dev_info(&pf->pdev->dev, " info: up_enable_bits = 0x%02x\n", vsi->info.up_enable_bits); dev_info(&pf->pdev->dev, " info: sched_reserved = 0x%02x, outer_up_table = 0x%04x\n", vsi->info.sched_reserved, vsi->info.outer_up_table); dev_info(&pf->pdev->dev, " info: cmd_reserved[] = 0x%02x 0x%02x 0x%02x 0x0%02x 0x%02x 0x%02x 0x%02x 0x0%02x\n", vsi->info.cmd_reserved[0], vsi->info.cmd_reserved[1], vsi->info.cmd_reserved[2], vsi->info.cmd_reserved[3], vsi->info.cmd_reserved[4], vsi->info.cmd_reserved[5], vsi->info.cmd_reserved[6], vsi->info.cmd_reserved[7]); dev_info(&pf->pdev->dev, " info: qs_handle[] = 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x 0x%04x\n", vsi->info.qs_handle[0], vsi->info.qs_handle[1], vsi->info.qs_handle[2], vsi->info.qs_handle[3], vsi->info.qs_handle[4], vsi->info.qs_handle[5], vsi->info.qs_handle[6], vsi->info.qs_handle[7]); dev_info(&pf->pdev->dev, " info: stat_counter_idx = 0x%04x, sched_id = 0x%04x\n", vsi->info.stat_counter_idx, vsi->info.sched_id); dev_info(&pf->pdev->dev, " info: resp_reserved[] = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\n", vsi->info.resp_reserved[0], vsi->info.resp_reserved[1], vsi->info.resp_reserved[2], vsi->info.resp_reserved[3], vsi->info.resp_reserved[4], vsi->info.resp_reserved[5], vsi->info.resp_reserved[6], vsi->info.resp_reserved[7], vsi->info.resp_reserved[8], vsi->info.resp_reserved[9], vsi->info.resp_reserved[10], vsi->info.resp_reserved[11]); dev_info(&pf->pdev->dev, " idx = %d\n", vsi->idx); dev_info(&pf->pdev->dev, " tc_config: numtc = %d, enabled_tc = 0x%x\n", vsi->tc_config.numtc, vsi->tc_config.enabled_tc); for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, " tc_config: tc = %d, qoffset = %d, qcount = %d, netdev_tc = %d\n", i, vsi->tc_config.tc_info[i].qoffset, vsi->tc_config.tc_info[i].qcount, vsi->tc_config.tc_info[i].netdev_tc); } dev_info(&pf->pdev->dev, " bw: bw_limit = %d, bw_max_quanta = %d\n", vsi->bw_limit, vsi->bw_max_quanta); for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, " bw[%d]: ets_share_credits = %d, ets_limit_credits = %d, max_quanta = %d\n", i, vsi->bw_ets_share_credits[i], vsi->bw_ets_limit_credits[i], vsi->bw_ets_max_quanta[i]); } } /** * i40e_dbg_dump_aq_desc - handles dump aq_desc write into command datum * @pf: the i40e_pf created in command write **/ static void i40e_dbg_dump_aq_desc(struct i40e_pf *pf) { struct i40e_adminq_ring *ring; struct i40e_hw *hw = &pf->hw; char hdr[32]; int i; snprintf(hdr, sizeof(hdr), "%s %s: ", dev_driver_string(&pf->pdev->dev), dev_name(&pf->pdev->dev)); /* first the send (command) ring, then the receive (event) ring */ dev_info(&pf->pdev->dev, "AdminQ Tx Ring\n"); ring = &(hw->aq.asq); for (i = 0; i < ring->count; i++) { struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i); dev_info(&pf->pdev->dev, " at[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n", i, d->flags, d->opcode, d->datalen, d->retval, d->cookie_high, d->cookie_low); print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE, 16, 1, d->params.raw, 16, 0); } dev_info(&pf->pdev->dev, "AdminQ Rx Ring\n"); ring = &(hw->aq.arq); for (i = 0; i < ring->count; i++) { struct i40e_aq_desc *d = I40E_ADMINQ_DESC(*ring, i); dev_info(&pf->pdev->dev, " ar[%02d] flags=0x%04x op=0x%04x dlen=0x%04x ret=0x%04x cookie_h=0x%08x cookie_l=0x%08x\n", i, d->flags, d->opcode, d->datalen, d->retval, d->cookie_high, d->cookie_low); print_hex_dump(KERN_INFO, hdr, DUMP_PREFIX_NONE, 16, 1, d->params.raw, 16, 0); } } /** * i40e_dbg_dump_desc - handles dump desc write into command datum * @cnt: number of arguments that the user supplied * @vsi_seid: vsi id entered by user * @ring_id: ring id entered by user * @desc_n: descriptor number entered by user * @pf: the i40e_pf created in command write * @type: enum describing whether ring is RX, TX or XDP **/ static void i40e_dbg_dump_desc(int cnt, int vsi_seid, int ring_id, int desc_n, struct i40e_pf *pf, enum ring_type type) { bool is_rx_ring = type == RING_TYPE_RX; struct i40e_tx_desc *txd; union i40e_rx_desc *rxd; struct i40e_ring *ring; struct i40e_vsi *vsi; int i; vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "vsi %d not found\n", vsi_seid); return; } if (vsi->type != I40E_VSI_MAIN && vsi->type != I40E_VSI_FDIR && vsi->type != I40E_VSI_VMDQ2) { dev_info(&pf->pdev->dev, "vsi %d type %d descriptor rings not available\n", vsi_seid, vsi->type); return; } if (type == RING_TYPE_XDP && !i40e_enabled_xdp_vsi(vsi)) { dev_info(&pf->pdev->dev, "XDP not enabled on VSI %d\n", vsi_seid); return; } if (ring_id >= vsi->num_queue_pairs || ring_id < 0) { dev_info(&pf->pdev->dev, "ring %d not found\n", ring_id); return; } if (!vsi->tx_rings || !vsi->tx_rings[0]->desc) { dev_info(&pf->pdev->dev, "descriptor rings have not been allocated for vsi %d\n", vsi_seid); return; } switch (type) { case RING_TYPE_RX: ring = kmemdup(vsi->rx_rings[ring_id], sizeof(*ring), GFP_KERNEL); break; case RING_TYPE_TX: ring = kmemdup(vsi->tx_rings[ring_id], sizeof(*ring), GFP_KERNEL); break; case RING_TYPE_XDP: ring = kmemdup(vsi->xdp_rings[ring_id], sizeof(*ring), GFP_KERNEL); break; default: ring = NULL; break; } if (!ring) return; if (cnt == 2) { switch (type) { case RING_TYPE_RX: dev_info(&pf->pdev->dev, "VSI = %02i Rx ring = %02i\n", vsi_seid, ring_id); break; case RING_TYPE_TX: dev_info(&pf->pdev->dev, "VSI = %02i Tx ring = %02i\n", vsi_seid, ring_id); break; case RING_TYPE_XDP: dev_info(&pf->pdev->dev, "VSI = %02i XDP ring = %02i\n", vsi_seid, ring_id); break; } for (i = 0; i < ring->count; i++) { if (!is_rx_ring) { txd = I40E_TX_DESC(ring, i); dev_info(&pf->pdev->dev, " d[%03x] = 0x%016llx 0x%016llx\n", i, txd->buffer_addr, txd->cmd_type_offset_bsz); } else { rxd = I40E_RX_DESC(ring, i); dev_info(&pf->pdev->dev, " d[%03x] = 0x%016llx 0x%016llx\n", i, rxd->read.pkt_addr, rxd->read.hdr_addr); } } } else if (cnt == 3) { if (desc_n >= ring->count || desc_n < 0) { dev_info(&pf->pdev->dev, "descriptor %d not found\n", desc_n); goto out; } if (!is_rx_ring) { txd = I40E_TX_DESC(ring, desc_n); dev_info(&pf->pdev->dev, "vsi = %02i tx ring = %02i d[%03x] = 0x%016llx 0x%016llx\n", vsi_seid, ring_id, desc_n, txd->buffer_addr, txd->cmd_type_offset_bsz); } else { rxd = I40E_RX_DESC(ring, desc_n); dev_info(&pf->pdev->dev, "vsi = %02i rx ring = %02i d[%03x] = 0x%016llx 0x%016llx\n", vsi_seid, ring_id, desc_n, rxd->read.pkt_addr, rxd->read.hdr_addr); } } else { dev_info(&pf->pdev->dev, "dump desc rx/tx/xdp <vsi_seid> <ring_id> [<desc_n>]\n"); } out: kfree(ring); } /** * i40e_dbg_dump_vsi_no_seid - handles dump vsi write into command datum * @pf: the i40e_pf created in command write **/ static void i40e_dbg_dump_vsi_no_seid(struct i40e_pf *pf) { int i; for (i = 0; i < pf->num_alloc_vsi; i++) if (pf->vsi[i]) dev_info(&pf->pdev->dev, "dump vsi[%d]: %d\n", i, pf->vsi[i]->seid); } /** * i40e_dbg_dump_eth_stats - handles dump stats write into command datum * @pf: the i40e_pf created in command write * @estats: the eth stats structure to be dumped **/ static void i40e_dbg_dump_eth_stats(struct i40e_pf *pf, struct i40e_eth_stats *estats) { dev_info(&pf->pdev->dev, " ethstats:\n"); dev_info(&pf->pdev->dev, " rx_bytes = \t%lld \trx_unicast = \t\t%lld \trx_multicast = \t%lld\n", estats->rx_bytes, estats->rx_unicast, estats->rx_multicast); dev_info(&pf->pdev->dev, " rx_broadcast = \t%lld \trx_discards = \t\t%lld\n", estats->rx_broadcast, estats->rx_discards); dev_info(&pf->pdev->dev, " rx_unknown_protocol = \t%lld \ttx_bytes = \t%lld\n", estats->rx_unknown_protocol, estats->tx_bytes); dev_info(&pf->pdev->dev, " tx_unicast = \t%lld \ttx_multicast = \t\t%lld \ttx_broadcast = \t%lld\n", estats->tx_unicast, estats->tx_multicast, estats->tx_broadcast); dev_info(&pf->pdev->dev, " tx_discards = \t%lld \ttx_errors = \t\t%lld\n", estats->tx_discards, estats->tx_errors); } /** * i40e_dbg_dump_veb_seid - handles dump stats of a single given veb * @pf: the i40e_pf created in command write * @seid: the seid the user put in **/ static void i40e_dbg_dump_veb_seid(struct i40e_pf *pf, int seid) { struct i40e_veb *veb; veb = i40e_dbg_find_veb(pf, seid); if (!veb) { dev_info(&pf->pdev->dev, "can't find veb %d\n", seid); return; } dev_info(&pf->pdev->dev, "veb idx=%d,%d stats_ic=%d seid=%d uplink=%d mode=%s\n", veb->idx, veb->veb_idx, veb->stats_idx, veb->seid, veb->uplink_seid, veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); i40e_dbg_dump_eth_stats(pf, &veb->stats); } /** * i40e_dbg_dump_veb_all - dumps all known veb's stats * @pf: the i40e_pf created in command write **/ static void i40e_dbg_dump_veb_all(struct i40e_pf *pf) { struct i40e_veb *veb; int i; for (i = 0; i < I40E_MAX_VEB; i++) { veb = pf->veb[i]; if (veb) i40e_dbg_dump_veb_seid(pf, veb->seid); } } /** * i40e_dbg_dump_vf - dump VF info * @pf: the i40e_pf created in command write * @vf_id: the vf_id from the user **/ static void i40e_dbg_dump_vf(struct i40e_pf *pf, int vf_id) { struct i40e_vf *vf; struct i40e_vsi *vsi; if (!pf->num_alloc_vfs) { dev_info(&pf->pdev->dev, "no VFs allocated\n"); } else if ((vf_id >= 0) && (vf_id < pf->num_alloc_vfs)) { vf = &pf->vf[vf_id]; vsi = pf->vsi[vf->lan_vsi_idx]; dev_info(&pf->pdev->dev, "vf %2d: VSI id=%d, seid=%d, qps=%d\n", vf_id, vf->lan_vsi_id, vsi->seid, vf->num_queue_pairs); dev_info(&pf->pdev->dev, " num MDD=%lld\n", vf->num_mdd_events); } else { dev_info(&pf->pdev->dev, "invalid VF id %d\n", vf_id); } } /** * i40e_dbg_dump_vf_all - dump VF info for all VFs * @pf: the i40e_pf created in command write **/ static void i40e_dbg_dump_vf_all(struct i40e_pf *pf) { int i; if (!pf->num_alloc_vfs) dev_info(&pf->pdev->dev, "no VFs enabled!\n"); else for (i = 0; i < pf->num_alloc_vfs; i++) i40e_dbg_dump_vf(pf, i); } /** * i40e_dbg_command_write - write into command datum * @filp: the opened file * @buffer: where to find the user's data * @count: the length of the user's data * @ppos: file position offset **/ static ssize_t i40e_dbg_command_write(struct file *filp, const char __user *buffer, size_t count, loff_t *ppos) { struct i40e_pf *pf = filp->private_data; char *cmd_buf, *cmd_buf_tmp; int bytes_not_copied; struct i40e_vsi *vsi; int vsi_seid; int veb_seid; int vf_id; int cnt; /* don't allow partial writes */ if (*ppos != 0) return 0; cmd_buf = kzalloc(count + 1, GFP_KERNEL); if (!cmd_buf) return count; bytes_not_copied = copy_from_user(cmd_buf, buffer, count); if (bytes_not_copied) { kfree(cmd_buf); return -EFAULT; } cmd_buf[count] = '\0'; cmd_buf_tmp = strchr(cmd_buf, '\n'); if (cmd_buf_tmp) { *cmd_buf_tmp = '\0'; count = cmd_buf_tmp - cmd_buf + 1; } if (strncmp(cmd_buf, "add vsi", 7) == 0) { vsi_seid = -1; cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid); if (cnt == 0) { /* default to PF VSI */ vsi_seid = pf->vsi[pf->lan_vsi]->seid; } else if (vsi_seid < 0) { dev_info(&pf->pdev->dev, "add VSI %d: bad vsi seid\n", vsi_seid); goto command_write_done; } /* By default we are in VEPA mode, if this is the first VF/VMDq * VSI to be added switch to VEB mode. */ if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) { pf->flags |= I40E_FLAG_VEB_MODE_ENABLED; i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG); } vsi = i40e_vsi_setup(pf, I40E_VSI_VMDQ2, vsi_seid, 0); if (vsi) dev_info(&pf->pdev->dev, "added VSI %d to relay %d\n", vsi->seid, vsi->uplink_seid); else dev_info(&pf->pdev->dev, "'%s' failed\n", cmd_buf); } else if (strncmp(cmd_buf, "del vsi", 7) == 0) { cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "del vsi: bad command string, cnt=%d\n", cnt); goto command_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "del VSI %d: seid not found\n", vsi_seid); goto command_write_done; } dev_info(&pf->pdev->dev, "deleting VSI %d\n", vsi_seid); i40e_vsi_release(vsi); } else if (strncmp(cmd_buf, "add relay", 9) == 0) { struct i40e_veb *veb; int uplink_seid, i; cnt = sscanf(&cmd_buf[9], "%i %i", &uplink_seid, &vsi_seid); if (cnt != 2) { dev_info(&pf->pdev->dev, "add relay: bad command string, cnt=%d\n", cnt); goto command_write_done; } else if (uplink_seid < 0) { dev_info(&pf->pdev->dev, "add relay %d: bad uplink seid\n", uplink_seid); goto command_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "add relay: VSI %d not found\n", vsi_seid); goto command_write_done; } for (i = 0; i < I40E_MAX_VEB; i++) if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) break; if (i >= I40E_MAX_VEB && uplink_seid != 0 && uplink_seid != pf->mac_seid) { dev_info(&pf->pdev->dev, "add relay: relay uplink %d not found\n", uplink_seid); goto command_write_done; } veb = i40e_veb_setup(pf, 0, uplink_seid, vsi_seid, vsi->tc_config.enabled_tc); if (veb) dev_info(&pf->pdev->dev, "added relay %d\n", veb->seid); else dev_info(&pf->pdev->dev, "add relay failed\n"); } else if (strncmp(cmd_buf, "del relay", 9) == 0) { int i; cnt = sscanf(&cmd_buf[9], "%i", &veb_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "del relay: bad command string, cnt=%d\n", cnt); goto command_write_done; } else if (veb_seid < 0) { dev_info(&pf->pdev->dev, "del relay %d: bad relay seid\n", veb_seid); goto command_write_done; } /* find the veb */ for (i = 0; i < I40E_MAX_VEB; i++) if (pf->veb[i] && pf->veb[i]->seid == veb_seid) break; if (i >= I40E_MAX_VEB) { dev_info(&pf->pdev->dev, "del relay: relay %d not found\n", veb_seid); goto command_write_done; } dev_info(&pf->pdev->dev, "deleting relay %d\n", veb_seid); i40e_veb_release(pf->veb[i]); } else if (strncmp(cmd_buf, "add pvid", 8) == 0) { i40e_status ret; u16 vid; unsigned int v; cnt = sscanf(&cmd_buf[8], "%i %u", &vsi_seid, &v); if (cnt != 2) { dev_info(&pf->pdev->dev, "add pvid: bad command string, cnt=%d\n", cnt); goto command_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "add pvid: VSI %d not found\n", vsi_seid); goto command_write_done; } vid = v; ret = i40e_vsi_add_pvid(vsi, vid); if (!ret) dev_info(&pf->pdev->dev, "add pvid: %d added to VSI %d\n", vid, vsi_seid); else dev_info(&pf->pdev->dev, "add pvid: %d to VSI %d failed, ret=%d\n", vid, vsi_seid, ret); } else if (strncmp(cmd_buf, "del pvid", 8) == 0) { cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "del pvid: bad command string, cnt=%d\n", cnt); goto command_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "del pvid: VSI %d not found\n", vsi_seid); goto command_write_done; } i40e_vsi_remove_pvid(vsi); dev_info(&pf->pdev->dev, "del pvid: removed from VSI %d\n", vsi_seid); } else if (strncmp(cmd_buf, "dump", 4) == 0) { if (strncmp(&cmd_buf[5], "switch", 6) == 0) { i40e_fetch_switch_configuration(pf, true); } else if (strncmp(&cmd_buf[5], "vsi", 3) == 0) { cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid); if (cnt > 0) i40e_dbg_dump_vsi_seid(pf, vsi_seid); else i40e_dbg_dump_vsi_no_seid(pf); } else if (strncmp(&cmd_buf[5], "veb", 3) == 0) { cnt = sscanf(&cmd_buf[8], "%i", &vsi_seid); if (cnt > 0) i40e_dbg_dump_veb_seid(pf, vsi_seid); else i40e_dbg_dump_veb_all(pf); } else if (strncmp(&cmd_buf[5], "vf", 2) == 0) { cnt = sscanf(&cmd_buf[7], "%i", &vf_id); if (cnt > 0) i40e_dbg_dump_vf(pf, vf_id); else i40e_dbg_dump_vf_all(pf); } else if (strncmp(&cmd_buf[5], "desc", 4) == 0) { int ring_id, desc_n; if (strncmp(&cmd_buf[10], "rx", 2) == 0) { cnt = sscanf(&cmd_buf[12], "%i %i %i", &vsi_seid, &ring_id, &desc_n); i40e_dbg_dump_desc(cnt, vsi_seid, ring_id, desc_n, pf, RING_TYPE_RX); } else if (strncmp(&cmd_buf[10], "tx", 2) == 0) { cnt = sscanf(&cmd_buf[12], "%i %i %i", &vsi_seid, &ring_id, &desc_n); i40e_dbg_dump_desc(cnt, vsi_seid, ring_id, desc_n, pf, RING_TYPE_TX); } else if (strncmp(&cmd_buf[10], "xdp", 3) == 0) { cnt = sscanf(&cmd_buf[13], "%i %i %i", &vsi_seid, &ring_id, &desc_n); i40e_dbg_dump_desc(cnt, vsi_seid, ring_id, desc_n, pf, RING_TYPE_XDP); } else if (strncmp(&cmd_buf[10], "aq", 2) == 0) { i40e_dbg_dump_aq_desc(pf); } else { dev_info(&pf->pdev->dev, "dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n"); dev_info(&pf->pdev->dev, "dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n"); dev_info(&pf->pdev->dev, "dump desc xdp <vsi_seid> <ring_id> [<desc_n>]\n"); dev_info(&pf->pdev->dev, "dump desc aq\n"); } } else if (strncmp(&cmd_buf[5], "reset stats", 11) == 0) { dev_info(&pf->pdev->dev, "core reset count: %d\n", pf->corer_count); dev_info(&pf->pdev->dev, "global reset count: %d\n", pf->globr_count); dev_info(&pf->pdev->dev, "emp reset count: %d\n", pf->empr_count); dev_info(&pf->pdev->dev, "pf reset count: %d\n", pf->pfr_count); dev_info(&pf->pdev->dev, "pf tx sluggish count: %d\n", pf->tx_sluggish_count); } else if (strncmp(&cmd_buf[5], "port", 4) == 0) { struct i40e_aqc_query_port_ets_config_resp *bw_data; struct i40e_dcbx_config *cfg = &pf->hw.local_dcbx_config; struct i40e_dcbx_config *r_cfg = &pf->hw.remote_dcbx_config; int i, ret; u16 switch_id; bw_data = kzalloc(sizeof( struct i40e_aqc_query_port_ets_config_resp), GFP_KERNEL); if (!bw_data) { ret = -ENOMEM; goto command_write_done; } vsi = pf->vsi[pf->lan_vsi]; switch_id = le16_to_cpu(vsi->info.switch_id) & I40E_AQ_VSI_SW_ID_MASK; ret = i40e_aq_query_port_ets_config(&pf->hw, switch_id, bw_data, NULL); if (ret) { dev_info(&pf->pdev->dev, "Query Port ETS Config AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); kfree(bw_data); bw_data = NULL; goto command_write_done; } dev_info(&pf->pdev->dev, "port bw: tc_valid=0x%x tc_strict_prio=0x%x, tc_bw_max=0x%04x,0x%04x\n", bw_data->tc_valid_bits, bw_data->tc_strict_priority_bits, le16_to_cpu(bw_data->tc_bw_max[0]), le16_to_cpu(bw_data->tc_bw_max[1])); for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, "port bw: tc_bw_share=%d tc_bw_limit=%d\n", bw_data->tc_bw_share_credits[i], le16_to_cpu(bw_data->tc_bw_limits[i])); } kfree(bw_data); bw_data = NULL; dev_info(&pf->pdev->dev, "port dcbx_mode=%d\n", cfg->dcbx_mode); dev_info(&pf->pdev->dev, "port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n", cfg->etscfg.willing, cfg->etscfg.cbs, cfg->etscfg.maxtcs); for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, "port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n", i, cfg->etscfg.prioritytable[i], cfg->etscfg.tcbwtable[i], cfg->etscfg.tsatable[i]); } for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, "port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n", i, cfg->etsrec.prioritytable[i], cfg->etsrec.tcbwtable[i], cfg->etsrec.tsatable[i]); } dev_info(&pf->pdev->dev, "port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n", cfg->pfc.willing, cfg->pfc.mbc, cfg->pfc.pfccap, cfg->pfc.pfcenable); dev_info(&pf->pdev->dev, "port app_table: num_apps=%d\n", cfg->numapps); for (i = 0; i < cfg->numapps; i++) { dev_info(&pf->pdev->dev, "port app_table: %d prio=%d selector=%d protocol=0x%x\n", i, cfg->app[i].priority, cfg->app[i].selector, cfg->app[i].protocolid); } /* Peer TLV DCBX data */ dev_info(&pf->pdev->dev, "remote port ets_cfg: willing=%d cbs=%d, maxtcs=%d\n", r_cfg->etscfg.willing, r_cfg->etscfg.cbs, r_cfg->etscfg.maxtcs); for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, "remote port ets_cfg: %d prio_tc=%d tcbw=%d tctsa=%d\n", i, r_cfg->etscfg.prioritytable[i], r_cfg->etscfg.tcbwtable[i], r_cfg->etscfg.tsatable[i]); } for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { dev_info(&pf->pdev->dev, "remote port ets_rec: %d prio_tc=%d tcbw=%d tctsa=%d\n", i, r_cfg->etsrec.prioritytable[i], r_cfg->etsrec.tcbwtable[i], r_cfg->etsrec.tsatable[i]); } dev_info(&pf->pdev->dev, "remote port pfc_cfg: willing=%d mbc=%d, pfccap=%d pfcenable=0x%x\n", r_cfg->pfc.willing, r_cfg->pfc.mbc, r_cfg->pfc.pfccap, r_cfg->pfc.pfcenable); dev_info(&pf->pdev->dev, "remote port app_table: num_apps=%d\n", r_cfg->numapps); for (i = 0; i < r_cfg->numapps; i++) { dev_info(&pf->pdev->dev, "remote port app_table: %d prio=%d selector=%d protocol=0x%x\n", i, r_cfg->app[i].priority, r_cfg->app[i].selector, r_cfg->app[i].protocolid); } } else if (strncmp(&cmd_buf[5], "debug fwdata", 12) == 0) { int cluster_id, table_id; int index, ret; u16 buff_len = 4096; u32 next_index; u8 next_table; u8 *buff; u16 rlen; cnt = sscanf(&cmd_buf[18], "%i %i %i", &cluster_id, &table_id, &index); if (cnt != 3) { dev_info(&pf->pdev->dev, "dump debug fwdata <cluster_id> <table_id> <index>\n"); goto command_write_done; } dev_info(&pf->pdev->dev, "AQ debug dump fwdata params %x %x %x %x\n", cluster_id, table_id, index, buff_len); buff = kzalloc(buff_len, GFP_KERNEL); if (!buff) goto command_write_done; ret = i40e_aq_debug_dump(&pf->hw, cluster_id, table_id, index, buff_len, buff, &rlen, &next_table, &next_index, NULL); if (ret) { dev_info(&pf->pdev->dev, "debug dump fwdata AQ Failed %d 0x%x\n", ret, pf->hw.aq.asq_last_status); kfree(buff); buff = NULL; goto command_write_done; } dev_info(&pf->pdev->dev, "AQ debug dump fwdata rlen=0x%x next_table=0x%x next_index=0x%x\n", rlen, next_table, next_index); print_hex_dump(KERN_INFO, "AQ buffer WB: ", DUMP_PREFIX_OFFSET, 16, 1, buff, rlen, true); kfree(buff); buff = NULL; } else { dev_info(&pf->pdev->dev, "dump desc tx <vsi_seid> <ring_id> [<desc_n>], dump desc rx <vsi_seid> <ring_id> [<desc_n>], dump desc xdp <vsi_seid> <ring_id> [<desc_n>],\n"); dev_info(&pf->pdev->dev, "dump switch\n"); dev_info(&pf->pdev->dev, "dump vsi [seid]\n"); dev_info(&pf->pdev->dev, "dump reset stats\n"); dev_info(&pf->pdev->dev, "dump port\n"); dev_info(&pf->pdev->dev, "dump vf [vf_id]\n"); dev_info(&pf->pdev->dev, "dump debug fwdata <cluster_id> <table_id> <index>\n"); } } else if (strncmp(cmd_buf, "pfr", 3) == 0) { dev_info(&pf->pdev->dev, "debugfs: forcing PFR\n"); i40e_do_reset_safe(pf, BIT(__I40E_PF_RESET_REQUESTED)); } else if (strncmp(cmd_buf, "corer", 5) == 0) { dev_info(&pf->pdev->dev, "debugfs: forcing CoreR\n"); i40e_do_reset_safe(pf, BIT(__I40E_CORE_RESET_REQUESTED)); } else if (strncmp(cmd_buf, "globr", 5) == 0) { dev_info(&pf->pdev->dev, "debugfs: forcing GlobR\n"); i40e_do_reset_safe(pf, BIT(__I40E_GLOBAL_RESET_REQUESTED)); } else if (strncmp(cmd_buf, "read", 4) == 0) { u32 address; u32 value; cnt = sscanf(&cmd_buf[4], "%i", &address); if (cnt != 1) { dev_info(&pf->pdev->dev, "read <reg>\n"); goto command_write_done; } /* check the range on address */ if (address > (pf->ioremap_len - sizeof(u32))) { dev_info(&pf->pdev->dev, "read reg address 0x%08x too large, max=0x%08lx\n", address, (unsigned long int)(pf->ioremap_len - sizeof(u32))); goto command_write_done; } value = rd32(&pf->hw, address); dev_info(&pf->pdev->dev, "read: 0x%08x = 0x%08x\n", address, value); } else if (strncmp(cmd_buf, "write", 5) == 0) { u32 address, value; cnt = sscanf(&cmd_buf[5], "%i %i", &address, &value); if (cnt != 2) { dev_info(&pf->pdev->dev, "write <reg> <value>\n"); goto command_write_done; } /* check the range on address */ if (address > (pf->ioremap_len - sizeof(u32))) { dev_info(&pf->pdev->dev, "write reg address 0x%08x too large, max=0x%08lx\n", address, (unsigned long int)(pf->ioremap_len - sizeof(u32))); goto command_write_done; } wr32(&pf->hw, address, value); value = rd32(&pf->hw, address); dev_info(&pf->pdev->dev, "write: 0x%08x = 0x%08x\n", address, value); } else if (strncmp(cmd_buf, "clear_stats", 11) == 0) { if (strncmp(&cmd_buf[12], "vsi", 3) == 0) { cnt = sscanf(&cmd_buf[15], "%i", &vsi_seid); if (cnt == 0) { int i; for (i = 0; i < pf->num_alloc_vsi; i++) i40e_vsi_reset_stats(pf->vsi[i]); dev_info(&pf->pdev->dev, "vsi clear stats called for all vsi's\n"); } else if (cnt == 1) { vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "clear_stats vsi: bad vsi %d\n", vsi_seid); goto command_write_done; } i40e_vsi_reset_stats(vsi); dev_info(&pf->pdev->dev, "vsi clear stats called for vsi %d\n", vsi_seid); } else { dev_info(&pf->pdev->dev, "clear_stats vsi [seid]\n"); } } else if (strncmp(&cmd_buf[12], "port", 4) == 0) { if (pf->hw.partition_id == 1) { i40e_pf_reset_stats(pf); dev_info(&pf->pdev->dev, "port stats cleared\n"); } else { dev_info(&pf->pdev->dev, "clear port stats not allowed on this port partition\n"); } } else { dev_info(&pf->pdev->dev, "clear_stats vsi [seid] or clear_stats port\n"); } } else if (strncmp(cmd_buf, "send aq_cmd", 11) == 0) { struct i40e_aq_desc *desc; i40e_status ret; desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL); if (!desc) goto command_write_done; cnt = sscanf(&cmd_buf[11], "%hi %hi %hi %hi %i %i %i %i %i %i", &desc->flags, &desc->opcode, &desc->datalen, &desc->retval, &desc->cookie_high, &desc->cookie_low, &desc->params.internal.param0, &desc->params.internal.param1, &desc->params.internal.param2, &desc->params.internal.param3); if (cnt != 10) { dev_info(&pf->pdev->dev, "send aq_cmd: bad command string, cnt=%d\n", cnt); kfree(desc); desc = NULL; goto command_write_done; } ret = i40e_asq_send_command(&pf->hw, desc, NULL, 0, NULL); if (!ret) { dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n"); } else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) { dev_info(&pf->pdev->dev, "AQ command send failed Opcode %x AQ Error: %d\n", desc->opcode, pf->hw.aq.asq_last_status); } else { dev_info(&pf->pdev->dev, "AQ command send failed Opcode %x Status: %d\n", desc->opcode, ret); } dev_info(&pf->pdev->dev, "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n", desc->flags, desc->opcode, desc->datalen, desc->retval, desc->cookie_high, desc->cookie_low, desc->params.internal.param0, desc->params.internal.param1, desc->params.internal.param2, desc->params.internal.param3); kfree(desc); desc = NULL; } else if (strncmp(cmd_buf, "send indirect aq_cmd", 20) == 0) { struct i40e_aq_desc *desc; i40e_status ret; u16 buffer_len; u8 *buff; desc = kzalloc(sizeof(struct i40e_aq_desc), GFP_KERNEL); if (!desc) goto command_write_done; cnt = sscanf(&cmd_buf[20], "%hi %hi %hi %hi %i %i %i %i %i %i %hi", &desc->flags, &desc->opcode, &desc->datalen, &desc->retval, &desc->cookie_high, &desc->cookie_low, &desc->params.internal.param0, &desc->params.internal.param1, &desc->params.internal.param2, &desc->params.internal.param3, &buffer_len); if (cnt != 11) { dev_info(&pf->pdev->dev, "send indirect aq_cmd: bad command string, cnt=%d\n", cnt); kfree(desc); desc = NULL; goto command_write_done; } /* Just stub a buffer big enough in case user messed up */ if (buffer_len == 0) buffer_len = 1280; buff = kzalloc(buffer_len, GFP_KERNEL); if (!buff) { kfree(desc); desc = NULL; goto command_write_done; } desc->flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF); ret = i40e_asq_send_command(&pf->hw, desc, buff, buffer_len, NULL); if (!ret) { dev_info(&pf->pdev->dev, "AQ command sent Status : Success\n"); } else if (ret == I40E_ERR_ADMIN_QUEUE_ERROR) { dev_info(&pf->pdev->dev, "AQ command send failed Opcode %x AQ Error: %d\n", desc->opcode, pf->hw.aq.asq_last_status); } else { dev_info(&pf->pdev->dev, "AQ command send failed Opcode %x Status: %d\n", desc->opcode, ret); } dev_info(&pf->pdev->dev, "AQ desc WB 0x%04x 0x%04x 0x%04x 0x%04x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n", desc->flags, desc->opcode, desc->datalen, desc->retval, desc->cookie_high, desc->cookie_low, desc->params.internal.param0, desc->params.internal.param1, desc->params.internal.param2, desc->params.internal.param3); print_hex_dump(KERN_INFO, "AQ buffer WB: ", DUMP_PREFIX_OFFSET, 16, 1, buff, buffer_len, true); kfree(buff); buff = NULL; kfree(desc); desc = NULL; } else if (strncmp(cmd_buf, "fd current cnt", 14) == 0) { dev_info(&pf->pdev->dev, "FD current total filter count for this interface: %d\n", i40e_get_current_fd_count(pf)); } else if (strncmp(cmd_buf, "lldp", 4) == 0) { if (strncmp(&cmd_buf[5], "stop", 4) == 0) { int ret; ret = i40e_aq_stop_lldp(&pf->hw, false, false, NULL); if (ret) { dev_info(&pf->pdev->dev, "Stop LLDP AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); goto command_write_done; } ret = i40e_aq_add_rem_control_packet_filter(&pf->hw, pf->hw.mac.addr, ETH_P_LLDP, 0, pf->vsi[pf->lan_vsi]->seid, 0, true, NULL, NULL); if (ret) { dev_info(&pf->pdev->dev, "%s: Add Control Packet Filter AQ command failed =0x%x\n", __func__, pf->hw.aq.asq_last_status); goto command_write_done; } #ifdef CONFIG_I40E_DCB pf->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE; #endif /* CONFIG_I40E_DCB */ } else if (strncmp(&cmd_buf[5], "start", 5) == 0) { int ret; ret = i40e_aq_add_rem_control_packet_filter(&pf->hw, pf->hw.mac.addr, ETH_P_LLDP, 0, pf->vsi[pf->lan_vsi]->seid, 0, false, NULL, NULL); if (ret) { dev_info(&pf->pdev->dev, "%s: Remove Control Packet Filter AQ command failed =0x%x\n", __func__, pf->hw.aq.asq_last_status); /* Continue and start FW LLDP anyways */ } ret = i40e_aq_start_lldp(&pf->hw, false, NULL); if (ret) { dev_info(&pf->pdev->dev, "Start LLDP AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); goto command_write_done; } #ifdef CONFIG_I40E_DCB pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_IEEE; #endif /* CONFIG_I40E_DCB */ } else if (strncmp(&cmd_buf[5], "get local", 9) == 0) { u16 llen, rlen; int ret; u8 *buff; buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL); if (!buff) goto command_write_done; ret = i40e_aq_get_lldp_mib(&pf->hw, 0, I40E_AQ_LLDP_MIB_LOCAL, buff, I40E_LLDPDU_SIZE, &llen, &rlen, NULL); if (ret) { dev_info(&pf->pdev->dev, "Get LLDP MIB (local) AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); kfree(buff); buff = NULL; goto command_write_done; } dev_info(&pf->pdev->dev, "LLDP MIB (local)\n"); print_hex_dump(KERN_INFO, "LLDP MIB (local): ", DUMP_PREFIX_OFFSET, 16, 1, buff, I40E_LLDPDU_SIZE, true); kfree(buff); buff = NULL; } else if (strncmp(&cmd_buf[5], "get remote", 10) == 0) { u16 llen, rlen; int ret; u8 *buff; buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL); if (!buff) goto command_write_done; ret = i40e_aq_get_lldp_mib(&pf->hw, I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE, I40E_AQ_LLDP_MIB_REMOTE, buff, I40E_LLDPDU_SIZE, &llen, &rlen, NULL); if (ret) { dev_info(&pf->pdev->dev, "Get LLDP MIB (remote) AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); kfree(buff); buff = NULL; goto command_write_done; } dev_info(&pf->pdev->dev, "LLDP MIB (remote)\n"); print_hex_dump(KERN_INFO, "LLDP MIB (remote): ", DUMP_PREFIX_OFFSET, 16, 1, buff, I40E_LLDPDU_SIZE, true); kfree(buff); buff = NULL; } else if (strncmp(&cmd_buf[5], "event on", 8) == 0) { int ret; ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw, true, NULL); if (ret) { dev_info(&pf->pdev->dev, "Config LLDP MIB Change Event (on) AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); goto command_write_done; } } else if (strncmp(&cmd_buf[5], "event off", 9) == 0) { int ret; ret = i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL); if (ret) { dev_info(&pf->pdev->dev, "Config LLDP MIB Change Event (off) AQ command failed =0x%x\n", pf->hw.aq.asq_last_status); goto command_write_done; } } } else if (strncmp(cmd_buf, "nvm read", 8) == 0) { u16 buffer_len, bytes; u16 module; u32 offset; u16 *buff; int ret; cnt = sscanf(&cmd_buf[8], "%hx %x %hx", &module, &offset, &buffer_len); if (cnt == 0) { module = 0; offset = 0; buffer_len = 0; } else if (cnt == 1) { offset = 0; buffer_len = 0; } else if (cnt == 2) { buffer_len = 0; } else if (cnt > 3) { dev_info(&pf->pdev->dev, "nvm read: bad command string, cnt=%d\n", cnt); goto command_write_done; } /* set the max length */ buffer_len = min_t(u16, buffer_len, I40E_MAX_AQ_BUF_SIZE/2); bytes = 2 * buffer_len; /* read at least 1k bytes, no more than 4kB */ bytes = clamp(bytes, (u16)1024, (u16)I40E_MAX_AQ_BUF_SIZE); buff = kzalloc(bytes, GFP_KERNEL); if (!buff) goto command_write_done; ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ); if (ret) { dev_info(&pf->pdev->dev, "Failed Acquiring NVM resource for read err=%d status=0x%x\n", ret, pf->hw.aq.asq_last_status); kfree(buff); goto command_write_done; } ret = i40e_aq_read_nvm(&pf->hw, module, (2 * offset), bytes, (u8 *)buff, true, NULL); i40e_release_nvm(&pf->hw); if (ret) { dev_info(&pf->pdev->dev, "Read NVM AQ failed err=%d status=0x%x\n", ret, pf->hw.aq.asq_last_status); } else { dev_info(&pf->pdev->dev, "Read NVM module=0x%x offset=0x%x words=%d\n", module, offset, buffer_len); if (bytes) print_hex_dump(KERN_INFO, "NVM Dump: ", DUMP_PREFIX_OFFSET, 16, 2, buff, bytes, true); } kfree(buff); buff = NULL; } else { dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf); dev_info(&pf->pdev->dev, "available commands\n"); dev_info(&pf->pdev->dev, " add vsi [relay_seid]\n"); dev_info(&pf->pdev->dev, " del vsi [vsi_seid]\n"); dev_info(&pf->pdev->dev, " add relay <uplink_seid> <vsi_seid>\n"); dev_info(&pf->pdev->dev, " del relay <relay_seid>\n"); dev_info(&pf->pdev->dev, " add pvid <vsi_seid> <vid>\n"); dev_info(&pf->pdev->dev, " del pvid <vsi_seid>\n"); dev_info(&pf->pdev->dev, " dump switch\n"); dev_info(&pf->pdev->dev, " dump vsi [seid]\n"); dev_info(&pf->pdev->dev, " dump desc tx <vsi_seid> <ring_id> [<desc_n>]\n"); dev_info(&pf->pdev->dev, " dump desc rx <vsi_seid> <ring_id> [<desc_n>]\n"); dev_info(&pf->pdev->dev, " dump desc xdp <vsi_seid> <ring_id> [<desc_n>]\n"); dev_info(&pf->pdev->dev, " dump desc aq\n"); dev_info(&pf->pdev->dev, " dump reset stats\n"); dev_info(&pf->pdev->dev, " dump debug fwdata <cluster_id> <table_id> <index>\n"); dev_info(&pf->pdev->dev, " read <reg>\n"); dev_info(&pf->pdev->dev, " write <reg> <value>\n"); dev_info(&pf->pdev->dev, " clear_stats vsi [seid]\n"); dev_info(&pf->pdev->dev, " clear_stats port\n"); dev_info(&pf->pdev->dev, " pfr\n"); dev_info(&pf->pdev->dev, " corer\n"); dev_info(&pf->pdev->dev, " globr\n"); dev_info(&pf->pdev->dev, " send aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3>\n"); dev_info(&pf->pdev->dev, " send indirect aq_cmd <flags> <opcode> <datalen> <retval> <cookie_h> <cookie_l> <param0> <param1> <param2> <param3> <buffer_len>\n"); dev_info(&pf->pdev->dev, " fd current cnt"); dev_info(&pf->pdev->dev, " lldp start\n"); dev_info(&pf->pdev->dev, " lldp stop\n"); dev_info(&pf->pdev->dev, " lldp get local\n"); dev_info(&pf->pdev->dev, " lldp get remote\n"); dev_info(&pf->pdev->dev, " lldp event on\n"); dev_info(&pf->pdev->dev, " lldp event off\n"); dev_info(&pf->pdev->dev, " nvm read [module] [word_offset] [word_count]\n"); } command_write_done: kfree(cmd_buf); cmd_buf = NULL; return count; } static const struct file_operations i40e_dbg_command_fops = { .owner = THIS_MODULE, .open = simple_open, .read = i40e_dbg_command_read, .write = i40e_dbg_command_write, }; /************************************************************** * netdev_ops * The netdev_ops entry in debugfs is for giving the driver commands * to be executed from the netdev operations. **************************************************************/ static char i40e_dbg_netdev_ops_buf[256] = ""; /** * i40e_dbg_netdev_ops_read - read for netdev_ops datum * @filp: the opened file * @buffer: where to write the data for the user to read * @count: the size of the user's buffer * @ppos: file position offset **/ static ssize_t i40e_dbg_netdev_ops_read(struct file *filp, char __user *buffer, size_t count, loff_t *ppos) { struct i40e_pf *pf = filp->private_data; int bytes_not_copied; int buf_size = 256; char *buf; int len; /* don't allow partal reads */ if (*ppos != 0) return 0; if (count < buf_size) return -ENOSPC; buf = kzalloc(buf_size, GFP_KERNEL); if (!buf) return -ENOSPC; len = snprintf(buf, buf_size, "%s: %s\n", pf->vsi[pf->lan_vsi]->netdev->name, i40e_dbg_netdev_ops_buf); bytes_not_copied = copy_to_user(buffer, buf, len); kfree(buf); if (bytes_not_copied) return -EFAULT; *ppos = len; return len; } /** * i40e_dbg_netdev_ops_write - write into netdev_ops datum * @filp: the opened file * @buffer: where to find the user's data * @count: the length of the user's data * @ppos: file position offset **/ static ssize_t i40e_dbg_netdev_ops_write(struct file *filp, const char __user *buffer, size_t count, loff_t *ppos) { struct i40e_pf *pf = filp->private_data; int bytes_not_copied; struct i40e_vsi *vsi; char *buf_tmp; int vsi_seid; int i, cnt; /* don't allow partial writes */ if (*ppos != 0) return 0; if (count >= sizeof(i40e_dbg_netdev_ops_buf)) return -ENOSPC; memset(i40e_dbg_netdev_ops_buf, 0, sizeof(i40e_dbg_netdev_ops_buf)); bytes_not_copied = copy_from_user(i40e_dbg_netdev_ops_buf, buffer, count); if (bytes_not_copied) return -EFAULT; i40e_dbg_netdev_ops_buf[count] = '\0'; buf_tmp = strchr(i40e_dbg_netdev_ops_buf, '\n'); if (buf_tmp) { *buf_tmp = '\0'; count = buf_tmp - i40e_dbg_netdev_ops_buf + 1; } if (strncmp(i40e_dbg_netdev_ops_buf, "change_mtu", 10) == 0) { int mtu; cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i %i", &vsi_seid, &mtu); if (cnt != 2) { dev_info(&pf->pdev->dev, "change_mtu <vsi_seid> <mtu>\n"); goto netdev_ops_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "change_mtu: VSI %d not found\n", vsi_seid); } else if (!vsi->netdev) { dev_info(&pf->pdev->dev, "change_mtu: no netdev for VSI %d\n", vsi_seid); } else if (rtnl_trylock()) { vsi->netdev->netdev_ops->ndo_change_mtu(vsi->netdev, mtu); rtnl_unlock(); dev_info(&pf->pdev->dev, "change_mtu called\n"); } else { dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n"); } } else if (strncmp(i40e_dbg_netdev_ops_buf, "set_rx_mode", 11) == 0) { cnt = sscanf(&i40e_dbg_netdev_ops_buf[11], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "set_rx_mode <vsi_seid>\n"); goto netdev_ops_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "set_rx_mode: VSI %d not found\n", vsi_seid); } else if (!vsi->netdev) { dev_info(&pf->pdev->dev, "set_rx_mode: no netdev for VSI %d\n", vsi_seid); } else if (rtnl_trylock()) { vsi->netdev->netdev_ops->ndo_set_rx_mode(vsi->netdev); rtnl_unlock(); dev_info(&pf->pdev->dev, "set_rx_mode called\n"); } else { dev_info(&pf->pdev->dev, "Could not acquire RTNL - please try again\n"); } } else if (strncmp(i40e_dbg_netdev_ops_buf, "napi", 4) == 0) { cnt = sscanf(&i40e_dbg_netdev_ops_buf[4], "%i", &vsi_seid); if (cnt != 1) { dev_info(&pf->pdev->dev, "napi <vsi_seid>\n"); goto netdev_ops_write_done; } vsi = i40e_dbg_find_vsi(pf, vsi_seid); if (!vsi) { dev_info(&pf->pdev->dev, "napi: VSI %d not found\n", vsi_seid); } else if (!vsi->netdev) { dev_info(&pf->pdev->dev, "napi: no netdev for VSI %d\n", vsi_seid); } else { for (i = 0; i < vsi->num_q_vectors; i++) napi_schedule(&vsi->q_vectors[i]->napi); dev_info(&pf->pdev->dev, "napi called\n"); } } else { dev_info(&pf->pdev->dev, "unknown command '%s'\n", i40e_dbg_netdev_ops_buf); dev_info(&pf->pdev->dev, "available commands\n"); dev_info(&pf->pdev->dev, " change_mtu <vsi_seid> <mtu>\n"); dev_info(&pf->pdev->dev, " set_rx_mode <vsi_seid>\n"); dev_info(&pf->pdev->dev, " napi <vsi_seid>\n"); } netdev_ops_write_done: return count; } static const struct file_operations i40e_dbg_netdev_ops_fops = { .owner = THIS_MODULE, .open = simple_open, .read = i40e_dbg_netdev_ops_read, .write = i40e_dbg_netdev_ops_write, }; /** * i40e_dbg_pf_init - setup the debugfs directory for the PF * @pf: the PF that is starting up **/ void i40e_dbg_pf_init(struct i40e_pf *pf) { const char *name = pci_name(pf->pdev); pf->i40e_dbg_pf = debugfs_create_dir(name, i40e_dbg_root); debugfs_create_file("command", 0600, pf->i40e_dbg_pf, pf, &i40e_dbg_command_fops); debugfs_create_file("netdev_ops", 0600, pf->i40e_dbg_pf, pf, &i40e_dbg_netdev_ops_fops); } /** * i40e_dbg_pf_exit - clear out the PF's debugfs entries * @pf: the PF that is stopping **/ void i40e_dbg_pf_exit(struct i40e_pf *pf) { debugfs_remove_recursive(pf->i40e_dbg_pf); pf->i40e_dbg_pf = NULL; } /** * i40e_dbg_init - start up debugfs for the driver **/ void i40e_dbg_init(void) { i40e_dbg_root = debugfs_create_dir(i40e_driver_name, NULL); if (!i40e_dbg_root) pr_info("init of debugfs failed\n"); } /** * i40e_dbg_exit - clean out the driver's debugfs entries **/ void i40e_dbg_exit(void) { debugfs_remove_recursive(i40e_dbg_root); i40e_dbg_root = NULL; } #endif /* CONFIG_DEBUG_FS */