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/linux/Documentation/devicetree/bindings/mailbox/
H A Dti,omap-mailbox.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mailbox/ti,omap-mailbox.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Suman Anna <s-anna@ti.com>
19 Each mailbox IP block/cluster has a certain number of h/w fifo queues and
26 interrupt configuration registers, and have a rx and tx interrupt source per
28 appropriate programming of the rx and tx interrupt sources on the appropriate
31 The number of h/w fifo queues and interrupt lines dictate the usable
34 h/w fifo queues and interrupt lines between different instances. The interrupt
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/linux/Documentation/devicetree/bindings/net/
H A Dbrcm,systemport.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Florian Fainelli <f.fainelli@gmail.com>
15 - brcm,systemport-v1.00
16 - brcm,systemportlite-v1.00
17 - brcm,systemport
25 - description: interrupt line for RX queues
26 - description: interrupt line for TX queues
27 - description: interrupt line for Wake-on-LAN
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/linux/Documentation/netlink/specs/
H A Drt-link.yaml1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
3 name: rt-link
4 protocol: netlink-raw
5 uapi-header: linux/rtnetlink.h
12 -
13 name: ifinfo-flags
16 enum-name: net-device-flags
17 name-prefix: iff-
19 -
21 -
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/linux/drivers/net/ethernet/intel/idpf/
H A Didpf_controlq_setup.c1 // SPDX-License-Identifier: GPL-2.0-only
7 * idpf_ctlq_alloc_desc_ring - Allocate Control Queue (CQ) rings
14 size_t size = cq->ring_size * sizeof(struct idpf_ctlq_desc); in idpf_ctlq_alloc_desc_ring()
16 cq->desc_ring.va = idpf_alloc_dma_mem(hw, &cq->desc_ring, size); in idpf_ctlq_alloc_desc_ring()
17 if (!cq->desc_ring.va) in idpf_ctlq_alloc_desc_ring()
18 return -ENOMEM; in idpf_ctlq_alloc_desc_ring()
24 * idpf_ctlq_alloc_bufs - Allocate Control Queue (CQ) buffers
28 * Allocate the buffer head for all control queues, and if it's a receive
36 /* Do not allocate DMA buffers for transmit queues */ in idpf_ctlq_alloc_bufs()
37 if (cq->cq_type == IDPF_CTLQ_TYPE_MAILBOX_TX) in idpf_ctlq_alloc_bufs()
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/linux/arch/arm/boot/dts/axis/
H A Dartpec6.dtsi2 * Device Tree Source for the Axis ARTPEC-6 SoC
4 * This file is dual-licensed: you can use it either under the terms
43 #include <dt-bindings/interrupt-controller/arm-gic.h>
44 #include <dt-bindings/dma/nbpfaxi.h>
45 #include <dt-bindings/clock/axis,artpec6-clkctrl.h>
48 #address-cells = <1>;
49 #size-cells = <1>;
51 interrupt-parent = <&intc>;
54 #address-cells = <1>;
55 #size-cells = <0>;
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/linux/drivers/crypto/caam/
H A Ddpseci.h1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
3 * Copyright 2013-2016 Freescale Semiconductor Inc.
4 * Copyright 2017-2018 NXP
21 * Maximum number of Tx/Rx queues per DPSECI object
26 * All queues considered; see dpseci_set_rx_queue()
28 #define DPSECI_ALL_QUEUES (u8)(-1)
41 * struct dpseci_cfg - Structure representing DPSECI configuration
44 * @num_tx_queues: num of queues towards the SEC
45 * @num_rx_queues: num of queues back from the SEC
47 * each place in the array is the priority of the tx queue
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/linux/drivers/net/ethernet/amazon/ena/
H A Dena_netdev.h1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
3 * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
60 #define ENA_DEFAULT_RX_COPYBREAK (256 - NET_IP_ALIGN)
72 /* The number of tx packet completions that will be handled each NAPI poll
83 /* Number of queues to check for missing queues per timer service */
88 #define ENA_TX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1))
90 #define ENA_RX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1))
92 (((idx) + (n)) & ((ring_size) - 1))
97 #define ENA_IO_RXQ_IDX_TO_COMBINED_IDX(q) (((q) - 1) / 2)
136 * the xdp queues
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H A Dena_netdev.c1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
3 * Copyright 2015-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
53 if (txqueue >= adapter->num_io_queues) { in ena_tx_timeout()
54 netdev_err(dev, "TX timeout on invalid queue %u\n", txqueue); in ena_tx_timeout()
58 threshold = jiffies_to_usecs(dev->watchdog_timeo); in ena_tx_timeout()
59 tx_ring = &adapter->tx_ring[txqueue]; in ena_tx_timeout()
61 time_since_last_napi = jiffies_to_usecs(jiffies - tx_ring->tx_stats.last_napi_jiffies); in ena_tx_timeout()
62 napi_scheduled = !!(tx_ring->napi->state & NAPIF_STATE_SCHED); in ena_tx_timeout()
65 …"TX q %d is paused for too long (threshold %u). Time since last napi %u usec. napi scheduled: %d\n… in ena_tx_timeout()
80 if (test_and_set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags)) in ena_tx_timeout()
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/linux/drivers/net/ethernet/cavium/liquidio/
H A Docteon_config.h7 * Copyright (c) 2003-2016 Cavium, Inc.
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
25 /*--------------------------CONFIG VALUES------------------------*/
121 #define CFG_GET_IQ_CFG(cfg) ((cfg)->iq)
122 #define CFG_GET_IQ_MAX_Q(cfg) ((cfg)->iq.max_iqs)
123 #define CFG_GET_IQ_PENDING_LIST_SIZE(cfg) ((cfg)->iq.pending_list_size)
124 #define CFG_GET_IQ_INSTR_TYPE(cfg) ((cfg)->iq.instr_type)
125 #define CFG_GET_IQ_DB_MIN(cfg) ((cfg)->iq.db_min)
126 #define CFG_GET_IQ_DB_TIMEOUT(cfg) ((cfg)->iq.db_timeout)
128 #define CFG_GET_IQ_INTR_PKT(cfg) ((cfg)->iq.iq_intr_pkt)
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H A Docteon_device.c7 * Copyright (c) 2003-2016 Cavium, Inc.
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
80 /* Num of desc for rx rings */
83 /* Num of desc for tx rings */
109 /* Num of desc for rx rings */
112 /* Num of desc for tx rings */
188 /* Num of desc for rx rings */
191 /* Num of desc for tx rings */
217 /* Num of desc for rx rings */
220 /* Num of desc for tx rings */
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/linux/arch/arm64/boot/dts/rockchip/
H A Drk3568.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 #include "rk356x-base.dtsi"
11 cpu0_opp_table: opp-table-0 {
12 compatible = "operating-points-v2";
13 opp-shared;
15 opp-408000000 {
16 opp-hz = /bits/ 64 <408000000>;
17 opp-microvolt = <850000 850000 1150000>;
18 clock-latency-ns = <40000>;
21 opp-600000000 {
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H A Drk3588-extra.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 #include "rk3588-base.dtsi"
7 #include "rk3588-extra-pinctrl.dtsi"
10 hdmi1_sound: hdmi1-sound {
11 compatible = "simple-audio-card";
12 simple-audio-card,format = "i2s";
13 simple-audio-card,mclk-fs = <128>;
14 simple-audio-card,name = "hdmi1";
17 simple-audio-card,codec {
18 sound-dai = <&hdmi1>;
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H A Drk3576.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 #include <dt-bindings/clock/rockchip,rk3576-cru.h>
7 #include <dt-bindings/interrupt-controller/arm-gic.h>
8 #include <dt-bindings/interrupt-controller/irq.h>
9 #include <dt-bindings/phy/phy.h>
10 #include <dt-bindings/pinctrl/rockchip.h>
11 #include <dt-bindings/power/rockchip,rk3576-power.h>
12 #include <dt-bindings/reset/rockchip,rk3576-cru.h>
13 #include <dt-bindings/soc/rockchip,boot-mode.h>
18 interrupt-parent = <&gic>;
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/linux/Documentation/networking/device_drivers/ethernet/ti/
H A Dcpsw.rst1 .. SPDX-License-Identifier: GPL-2.0
26 - TX queues must be rated starting from txq0 that has highest priority
27 - Traffic classes are used starting from 0, that has highest priority
28 - CBS shapers should be used with rated queues
29 - The bandwidth for CBS shapers has to be set a little bit more then
30 potential incoming rate, thus, rate of all incoming tx queues has
32 - Real rates can differ, due to discreetness
33 - Map skb-priority to txq is not enough, also skb-priority to l2 prio
35 - Any l2/socket prio (0 - 7) for classes can be used, but for
37 - only 2 classes tested: A and B, but checked and can work with more,
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/linux/tools/testing/selftests/drivers/net/hw/
H A Dncdevmem.c1 // SPDX-License-Identifier: GPL-2.0
9 * ncdevmem -s <server IP> [-c <client IP>] -f eth1 -l -p 5201
12 * echo -n "hello\nworld" | \
13 * ncdevmem -s <server IP> [-c <client IP>] -p 5201 -f eth1
16 * be replaced with regular netcat to test the RX or TX path in isolation.
21 * ncdevmem -s <server IP> [-c <client IP>] -f eth1 -l -p 5201 -v 7
24 * yes $(echo -e \\x01\\x02\\x03\\x04\\x05\\x06) | \
25 * head -c 1G | \
26 * nc <server IP> 5201 -p 5201
28 * Test data validation (devmem TCP on RX and TX, validation happens on RX):
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/linux/drivers/net/ethernet/google/gve/
H A Dgve.h1 /* SPDX-License-Identifier: (GPL-2.0 OR MIT)
4 * Copyright (C) 2015-2024 Google LLC
10 #include <linux/dma-mapping.h>
33 /* 1 for management, 1 for rx, 1 for tx */
36 /* Numbers of gve tx/rx stats in stats report. */
43 /* Numbers of NIC tx/rx stats in stats report. */
49 #define GVE_DATA_SLOT_ADDR_PAGE_MASK (~(PAGE_SIZE - 1))
71 (GVE_ADMINQ_BUFFER_SIZE / sizeof(((struct gve_adminq_queried_flow_rule *)0)->location))
89 /* 2K buffers for DQO-QPL */
95 * allocs and uses a non-qpl page on the receive path of DQO QPL to free
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/linux/include/xen/interface/io/
H A Dnetif.h1 /* SPDX-License-Identifier: MIT */
5 * Unified network-device I/O interface for Xen guest OSes.
7 * Copyright (c) 2003-2004, Keir Fraser
38 * feature 'feature-rx-notify' via xenbus. Otherwise the backend will assume
43 * "feature-split-event-channels" is introduced to separate guest TX
48 * channels for TX and RX, advertise them to backend as
49 * "event-channel-tx" and "event-channel-rx" respectively. If frontend
50 * doesn't want to use this feature, it just writes "event-channel"
55 * Multiple transmit and receive queues:
56 * If supported, the backend will write the key "multi-queue-max-queues" to
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/linux/drivers/dma/amd/qdma/
H A Dqdma.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * DMA driver for AMD Queue-based DMA Subsystem
5 * Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
10 #include <linux/dma-mapping.h>
19 #define CHAN_STR(q) (((q)->dir == DMA_MEM_TO_DEV) ? "H2C" : "C2H")
20 #define QDMA_REG_OFF(d, r) ((d)->roffs[r].off)
43 idx = qdev->qintr_rings[qdev->qintr_ring_idx++].ridx; in qdma_get_intr_ring_idx()
44 qdev->qintr_ring_idx %= qdev->qintr_ring_num; in qdma_get_intr_ring_idx()
52 const struct qdma_reg_field *f = &qdev->rfields[field]; in qdma_get_field()
56 low_pos = f->lsb / BITS_PER_TYPE(*data); in qdma_get_field()
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/linux/drivers/net/ethernet/intel/ice/
H A Dice.h1 /* SPDX-License-Identifier: GPL-2.0 */
19 #include <linux/dma-mapping.h>
110 #define ICE_MAX_RXQS_PER_TC 256 /* Used when setting VSI context per TC Rx queues */
120 #define ICE_MAX_MTU (ICE_AQ_SET_MAC_FRAME_SIZE_MAX - ICE_ETH_PKT_HDR_PAD)
128 #define ICE_TX_DESC(R, i) (&(((struct ice_tx_desc *)((R)->desc))[i]))
129 #define ICE_RX_DESC(R, i) (&(((union ice_32b_rx_flex_desc *)((R)->desc))[i]))
130 #define ICE_TX_CTX_DESC(R, i) (&(((struct ice_tx_ctx_desc *)((R)->desc))[i]))
131 #define ICE_TX_FDIRDESC(R, i) (&(((struct ice_fltr_desc *)((R)->desc))[i]))
157 for ((i) = 0; (i) < (pf)->num_alloc_vsi; (i)++)
159 /* Macros for each Tx/Xdp/Rx ring in a VSI */
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H A Dice_base.c1 // SPDX-License-Identifier: GPL-2.0
11 * __ice_vsi_get_qs_contig - Assign a contiguous chunk of queues to VSI
12 * @qs_cfg: gathered variables needed for PF->VSI queues assignment
14 * Return 0 on success and -ENOMEM in case of no left space in PF queue bitmap
20 mutex_lock(qs_cfg->qs_mutex); in __ice_vsi_get_qs_contig()
21 offset = bitmap_find_next_zero_area(qs_cfg->pf_map, qs_cfg->pf_map_size, in __ice_vsi_get_qs_contig()
22 0, qs_cfg->q_count, 0); in __ice_vsi_get_qs_contig()
23 if (offset >= qs_cfg->pf_map_size) { in __ice_vsi_get_qs_contig()
24 mutex_unlock(qs_cfg->qs_mutex); in __ice_vsi_get_qs_contig()
25 return -ENOMEM; in __ice_vsi_get_qs_contig()
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/linux/drivers/net/xen-netback/
H A Dcommon.h53 struct xen_netif_tx_request req; /* tx request */
59 * skb_shinfo(skb)->destructor_arg points to the first mapped slot's
91 #define NETBACK_INVALID_HANDLE -1
100 /* Queue name is interface name with "-qNNN" appended */
103 /* IRQ name is queue name with "-tx" or "-rx" appended */
109 /* Stats fields to be updated per-queue.
131 unsigned int num; member
135 struct xenvif_queue { /* Per-queue data for xenvif */
136 unsigned int id; /* Queue ID, 0-based */
137 char name[QUEUE_NAME_SIZE]; /* DEVNAME-qN */
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/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx7d.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
7 #include <dt-bindings/reset/imx7-reset.h>
18 clock-frequency = <996000000>;
19 operating-points-v2 = <&cpu0_opp_table>;
20 #cooling-cells = <2>;
21 nvmem-cells = <&fuse_grade>;
22 nvmem-cell-names = "speed_grade";
26 compatible = "arm,cortex-a7";
29 clock-frequency = <996000000>;
30 operating-points-v2 = <&cpu0_opp_table>;
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/linux/drivers/net/ethernet/emulex/benet/
H A Dbe.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2005 - 2016 Broadcom
7 * linux-drivers@emulex.com
31 #include <linux/hwmon-sysfs.h>
60 /* Number of bytes of an RX frame that are copied to skb->data */
67 #define BE_MAX_MTU (BE_MAX_JUMBO_FRAME_SIZE - \
71 #define BE_MAX_GSO_SIZE (65535 - 2 * VLAN_HLEN)
105 #define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
111 #define CNTL_SERIAL_NUM_WORD_SZ (sizeof(u16)) /* Byte-sz of serial num word */
136 BUG_ON(limit & (limit - 1)); in MODULO()
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/linux/drivers/net/
H A Dxen-netfront.c4 * Copyright (c) 2002-2005, K A Fraser
67 "Maximum number of queues per virtual interface");
81 #define NETFRONT_SKB_CB(skb) ((struct netfront_cb *)((skb)->cb))
91 /* Queue name is interface name with "-qNNN" appended */
94 /* IRQ name is queue name with "-tx" or "-rx" appended */
108 unsigned int id; /* Queue ID, 0-based */
109 char name[QUEUE_NAME_SIZE]; /* DEVNAME-qN */
122 char tx_irq_name[IRQ_NAME_SIZE]; /* DEVNAME-qN-tx */
123 char rx_irq_name[IRQ_NAME_SIZE]; /* DEVNAME-qN-rx */
126 struct xen_netif_tx_front_ring tx; member
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/linux/Documentation/networking/device_drivers/ethernet/intel/
H A Diavf.rst1 .. SPDX-License-Identifier: GPL-2.0+
8 Copyright(c) 2013-2018 Intel Corporation.
13 - Overview
14 - Identifying Your Adapter
15 - Additional Configurations
16 - Known Issues/Troubleshooting
17 - Support
30 The guest OS loading the iavf driver must support MSI-X interrupts.
53 ---------------------
58 # dmesg -n 8
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