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/linux/sound/drivers/
H A Daloop.c3 * Loopback soundcard
34 MODULE_DESCRIPTION("A loopback soundcard");
47 MODULE_PARM_DESC(index, "Index value for loopback soundcard.");
49 MODULE_PARM_DESC(id, "ID string for loopback soundcard.");
51 MODULE_PARM_DESC(enable, "Enable this loopback soundcard.");
53 MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-8) for loopback driver.");
70 * call in loopback->cable_lock
86 * call in loopback->cable_lock
131 struct loopback { struct
141 struct loopback *loopback; argument
[all …]
/linux/drivers/net/ethernet/sfc/siena/
H A Denum.h11 * enum efx_loopback_mode - loopback modes
12 * @LOOPBACK_NONE: no loopback
13 * @LOOPBACK_DATA: data path loopback
14 * @LOOPBACK_GMAC: loopback within GMAC
15 * @LOOPBACK_XGMII: loopback after XMAC
16 * @LOOPBACK_XGXS: loopback within BPX after XGXS
17 * @LOOPBACK_XAUI: loopback within BPX before XAUI serdes
18 * @LOOPBACK_GMII: loopback within BPX after GMAC
19 * @LOOPBACK_SGMII: loopback within BPX within SGMII
20 * @LOOPBACK_XGBR: loopback within BPX within XGBR
[all …]
H A Dselftest.c39 * Loopback test packet structure
57 /* Loopback test source MAC address */
63 "Hello world! This is an Efx loopback test in progress!";
76 * struct efx_loopback_state - persistent state during a loopback selftest
278 * Loopback testing
279 * NB Only one loopback test can be executing concurrently.
283 /* Loopback test RX callback
284 * This is called for each received packet during loopback testing.
310 "saw runt RX packet (length %d) in %s loopback " in efx_siena_loopback_rx_packet()
318 "saw non-loopback RX packet in %s loopback test\n", in efx_siena_loopback_rx_packet()
[all …]
/linux/drivers/net/ethernet/sfc/falcon/
H A Denum.h11 * enum ef4_loopback_mode - loopback modes
12 * @LOOPBACK_NONE: no loopback
13 * @LOOPBACK_DATA: data path loopback
14 * @LOOPBACK_GMAC: loopback within GMAC
15 * @LOOPBACK_XGMII: loopback after XMAC
16 * @LOOPBACK_XGXS: loopback within BPX after XGXS
17 * @LOOPBACK_XAUI: loopback within BPX before XAUI serdes
18 * @LOOPBACK_GMII: loopback within BPX after GMAC
19 * @LOOPBACK_SGMII: loopback within BPX within SGMII
20 * @LOOPBACK_XGBR: loopback within BPX within XGBR
[all …]
H A Dselftest.c36 * Loopback test packet structure
54 /* Loopback test source MAC address */
60 "Hello world! This is an Efx loopback test in progress!";
73 * struct ef4_loopback_state - persistent state during a loopback selftest
280 * Loopback testing
281 * NB Only one loopback test can be executing concurrently.
285 /* Loopback test RX callback
286 * This is called for each received packet during loopback testing.
312 "saw runt RX packet (length %d) in %s loopback " in ef4_loopback_rx_packet()
320 "saw non-loopback RX packet in %s loopback test\n", in ef4_loopback_rx_packet()
[all …]
/linux/drivers/net/ethernet/sfc/
H A Denum.h11 * enum efx_loopback_mode - loopback modes
12 * @LOOPBACK_NONE: no loopback
13 * @LOOPBACK_DATA: data path loopback
14 * @LOOPBACK_GMAC: loopback within GMAC
15 * @LOOPBACK_XGMII: loopback after XMAC
16 * @LOOPBACK_XGXS: loopback within BPX after XGXS
17 * @LOOPBACK_XAUI: loopback within BPX before XAUI serdes
18 * @LOOPBACK_GMII: loopback within BPX after GMAC
19 * @LOOPBACK_SGMII: loopback within BPX within SGMII
20 * @LOOPBACK_XGBR: loopback within BPX within XGBR
[all …]
H A Dselftest.c39 * Loopback test packet structure
56 /* Loopback test source MAC address */
62 "Hello world! This is an Efx loopback test in progress!";
75 * struct efx_loopback_state - persistent state during a loopback selftest
277 * Loopback testing
278 * NB Only one loopback test can be executing concurrently.
282 /* Loopback test RX callback
283 * This is called for each received packet during loopback testing.
309 "saw runt RX packet (length %d) in %s loopback " in efx_loopback_rx_packet()
317 "saw non-loopback RX packet in %s loopback test\n", in efx_loopback_rx_packet()
[all …]
/linux/tools/testing/selftests/bpf/prog_tests/
H A Dtc_opts.c7 #define loopback 1 macro
41 err = bpf_prog_attach_opts(fd1, loopback, BPF_TCX_INGRESS, &opta); in serial_test_tc_opts_basic()
53 err = bpf_prog_query_opts(loopback, BPF_TCX_INGRESS, &optq); in serial_test_tc_opts_basic()
68 err = bpf_prog_attach_opts(fd2, loopback, BPF_TCX_EGRESS, &opta); in serial_test_tc_opts_basic()
78 err = bpf_prog_query_opts(loopback, BPF_TCX_EGRESS, &optq); in serial_test_tc_opts_basic()
94 err = bpf_prog_detach_opts(fd2, loopback, BPF_TCX_EGRESS, &optd); in serial_test_tc_opts_basic()
101 err = bpf_prog_detach_opts(fd1, loopback, BPF_TCX_INGRESS, &optd); in serial_test_tc_opts_basic()
141 err = bpf_prog_attach_opts(fd1, loopback, target, &opta); in test_tc_opts_before_target()
147 err = bpf_prog_attach_opts(fd2, loopback, target, &opta); in test_tc_opts_before_target()
158 err = bpf_prog_query_opts(loopback, target, &optq); in test_tc_opts_before_target()
[all …]
H A Dtc_links.c8 #define loopback 1 macro
41 link = bpf_program__attach_tcx(skel->progs.tc1, loopback, &optl); in serial_test_tc_links_basic()
59 err = bpf_prog_query_opts(loopback, BPF_TCX_INGRESS, &optq); in serial_test_tc_links_basic()
76 link = bpf_program__attach_tcx(skel->progs.tc2, loopback, &optl); in serial_test_tc_links_basic()
92 err = bpf_prog_query_opts(loopback, BPF_TCX_EGRESS, &optq); in serial_test_tc_links_basic()
154 link = bpf_program__attach_tcx(skel->progs.tc1, loopback, &optl); in test_tc_links_before_target()
164 link = bpf_program__attach_tcx(skel->progs.tc2, loopback, &optl); in test_tc_links_before_target()
181 err = bpf_prog_query_opts(loopback, target, &optq); in test_tc_links_before_target()
207 link = bpf_program__attach_tcx(skel->progs.tc3, loopback, &optl); in test_tc_links_before_target()
220 link = bpf_program__attach_tcx(skel->progs.tc4, loopback, &optl); in test_tc_links_before_target()
[all …]
/linux/tools/testing/selftests/drivers/net/hw/
H A Dloopback.sh45 check_fail $? "Matched on a filter without loopback setup"
47 ethtool -K $h1 loopback on
48 check_err $? "Failed to enable loopback"
55 check_err $? "Did not match on filter with loopback"
57 ethtool -K $h1 loopback off
58 check_err $? "Failed to disable loopback"
63 check_fail $? "Matched on a filter after loopback was removed"
67 log_test "loopback"
80 if ethtool -k $h1 | grep loopback | grep -q fixed; then
81 log_test "SKIP: dev $h1 does not support loopback feature"
/linux/drivers/net/ethernet/cisco/enic/
H A Denic_res.h34 int offload_mode, int cq_entry, int sop, int eop, int loopback) in enic_queue_wq_desc_ex() argument
50 (u8)loopback); in enic_queue_wq_desc_ex()
58 int eop, int loopback) in enic_queue_wq_desc_cont() argument
62 eop, 0 /* !SOP */, eop, loopback); in enic_queue_wq_desc_cont()
67 unsigned int vlan_tag, int eop, int loopback) in enic_queue_wq_desc() argument
72 eop, 1 /* SOP */, eop, loopback); in enic_queue_wq_desc()
78 unsigned int vlan_tag, int eop, int loopback) in enic_queue_wq_desc_csum() argument
84 eop, 1 /* SOP */, eop, loopback); in enic_queue_wq_desc_csum()
90 int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback) in enic_queue_wq_desc_csum_l4() argument
95 eop, 1 /* SOP */, eop, loopback); in enic_queue_wq_desc_csum_l4()
[all …]
/linux/arch/arm64/boot/dts/amlogic/
H A Dmeson-sm1-s905d3-libretech-cc.dts34 "TDMIN_A IN 13", "TDM_A Loopback",
35 "TDMIN_B IN 13", "TDM_A Loopback",
36 "TDMIN_C IN 13", "TDM_A Loopback",
40 "TDMIN_A IN 14", "TDM_B Loopback",
41 "TDMIN_B IN 14", "TDM_B Loopback",
42 "TDMIN_C IN 14", "TDM_B Loopback",
46 "TDMIN_A IN 15", "TDM_C Loopback",
47 "TDMIN_B IN 15", "TDM_C Loopback",
48 "TDMIN_C IN 15", "TDM_C Loopback",
H A Dmeson-g12b-a311d-libretech-cc.dts46 "TDMIN_A IN 3", "TDM_A Loopback",
47 "TDMIN_B IN 3", "TDM_A Loopback",
48 "TDMIN_C IN 3", "TDM_A Loopback",
52 "TDMIN_A IN 4", "TDM_B Loopback",
53 "TDMIN_B IN 4", "TDM_B Loopback",
54 "TDMIN_C IN 4", "TDM_B Loopback",
58 "TDMIN_A IN 5", "TDM_C Loopback",
59 "TDMIN_B IN 5", "TDM_C Loopback",
60 "TDMIN_C IN 5", "TDM_C Loopback",
H A Dmeson-sm1-bananapi-m5.dts42 "TDMIN_A IN 4", "TDM_B Loopback",
43 "TDMIN_B IN 4", "TDM_B Loopback",
44 "TDMIN_C IN 4", "TDM_B Loopback",
45 "TDMIN_A IN 5", "TDM_C Loopback",
46 "TDMIN_B IN 5", "TDM_C Loopback",
47 "TDMIN_C IN 5", "TDM_C Loopback",
H A Dmeson-g12b-odroid-n2.dtsi73 "TDMIN_A IN 4", "TDM_B Loopback",
74 "TDMIN_B IN 4", "TDM_B Loopback",
75 "TDMIN_C IN 4", "TDM_B Loopback",
76 "TDMIN_LB IN 1", "TDM_B Loopback",
77 "TDMIN_A IN 5", "TDM_C Loopback",
78 "TDMIN_B IN 5", "TDM_C Loopback",
79 "TDMIN_C IN 5", "TDM_C Loopback",
80 "TDMIN_LB IN 2", "TDM_C Loopback",
H A Dmeson-g12a-u200.dts200 "TDMIN_A IN 3", "TDM_A Loopback",
201 "TDMIN_A IN 4", "TDM_B Loopback",
202 "TDMIN_A IN 5", "TDM_C Loopback",
206 "TDMIN_B IN 3", "TDM_A Loopback",
207 "TDMIN_B IN 4", "TDM_B Loopback",
208 "TDMIN_B IN 5", "TDM_C Loopback",
212 "TDMIN_C IN 3", "TDM_A Loopback",
213 "TDMIN_C IN 4", "TDM_B Loopback",
214 "TDMIN_C IN 5", "TDM_C Loopback",
218 "TDMIN_LB IN 0", "TDM_A Loopback",
[all …]
/linux/net/rds/
H A Dloop.c59 * This 'loopback' transport is a special case for flows that originate
64 * loopback transport instead of the bound transport of the sending socket.
66 * The loopback transport's sending path just hands the sent rds_message
72 * flows to the receiver. In the loopback case, though, the receive path
83 /* Do not send cong updates to loopback */ in rds_loop_xmit()
130 * Even the loopback transport needs to keep track of its connections,
132 * 1+ loopback addresses (127.*.*.*) so it's not a bug to have
133 * multiple loopback conns allocated, although rather useless.
251 .t_name = "loopback",
/linux/Documentation/sound/hd-audio/
H A Dcontrols.rst38 Analog Loopback
39 This control enables/disables the analog-loopback circuit. This
40 appears only when "loopback" is set to true in a codec hint
41 (see HD-Audio.txt). Note that on some codecs the analog-loopback
77 Loopback Mixing
78 An enum control to determine whether the analog-loopback route is
79 enabled or not. When it's enabled, the analog-loopback is mixed to
/linux/tools/testing/selftests/ir/
H A Dir_loopback.sh12 if ! /sbin/modprobe -q -n rc-loopback; then
13 echo "ir_loopback: module rc-loopback is not found in /lib/modules/`uname -r` [SKIP]"
17 /sbin/modprobe rc-loopback
22 RCDEV=$(grep -l DRV_NAME=rc-loopback /sys/class/rc/rc*/uevent | grep -o 'rc[0-9]\+')
/linux/drivers/net/ethernet/stmicro/stmmac/
H A Dstmmac_pcs.h27 #define GMAC_AN_CTRL_ELE BIT(14) /* External Loopback Enable */
83 * @loopback: to cause the PHY to loopback tx data into rx path.
85 * and init the ANE, select loopback (usually for debugging purpose) and
89 bool srgmi_ral, bool loopback) in dwmac_ctrl_ane() argument
105 if (loopback) in dwmac_ctrl_ane()
/linux/drivers/net/
H A Dloopback.c7 * Pseudo-driver for the loopback interface.
9 * Version: @(#)loopback.c 1.0.4b 08/16/93
22 * on packets received on the loopback
196 /* The loopback device is special. There is only one instance
205 /* Setup and register the loopback device. */
229 panic("loopback: Failed to register netdevice: %d\n", err); in loopback_net_init()
252 * DSTs and unlike loopback, this is not per-ns.
/linux/sound/soc/codecs/
H A Dwm8998.c498 SOC_DAPM_ENUM("AEC1 Loopback", wm8998_aec1_loopback),
499 SOC_DAPM_ENUM("AEC2 Loopback", wm8998_aec2_loopback),
623 SND_SOC_DAPM_MUX("AEC1 Loopback", ARIZONA_DAC_AEC_CONTROL_1,
627 SND_SOC_DAPM_MUX("AEC2 Loopback", ARIZONA_DAC_AEC_CONTROL_2,
848 { name, "AEC", "AEC1 Loopback" }, \
849 { name, "AEC2", "AEC2 Loopback" }, \
1102 { "AEC1 Loopback", "HPOUTL", "OUT1L" },
1103 { "AEC1 Loopback", "HPOUTR", "OUT1R" },
1104 { "AEC2 Loopback", "HPOUTL", "OUT1L" },
1105 { "AEC2 Loopback", "HPOUTR", "OUT1R" },
[all …]
/linux/drivers/nvme/target/
H A DKconfig42 tristate "NVMe loopback device support"
47 This enables the NVMe loopback device support, which can be useful
75 tristate "NVMe over Fabrics FC Transport Loopback Test driver"
82 This enables the NVMe FC loopback test support, which can be useful
/linux/include/uapi/linux/
H A Datmdev.h91 /* get loopback mode */
93 /* set loopback mode */
95 /* query supported loopback modes */
120 * Loopback modes for ATM_{PHY,SAR}_{GET,SET}LOOP
123 /* Point of loopback CPU-->SAR-->PHY-->line--> ... */
131 /* Direction of loopback */
138 #define ATM_LM_NONE 0 /* no loopback */
/linux/net/smc/
H A DKconfig25 bool "SMC intra-OS shortcut with loopback-ism"
30 loopback-ism in SMC and makes use of it for transferring data
32 convenient testing of SMC-D since loopback-ism is independent

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