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Merge branch 'siocghwtstamp' of git://git.kernel.org/pub/scm/linux/ke…
…rnel/git/bwh/sfc-next
Ben Hutchings says:
====================
SIOCGHWTSTAMP ioctl
1. Add the SIOCGHWTSTAMP ioctl and update the timestamping
documentation.
2. Implement SIOCGHWTSTAMP in most drivers that support SIOCSHWTSTAMP.
3. Add a test program to exercise SIOC{G,S}HWTSTAMP.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| timestamping | ||
| hwtstamp_config |
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134 changes: 134 additions & 0 deletions
134
Documentation/networking/timestamping/hwtstamp_config.c
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| /* Test program for SIOC{G,S}HWTSTAMP | ||
| * Copyright 2013 Solarflare Communications | ||
| * Author: Ben Hutchings | ||
| */ | ||
|
|
||
| #include <errno.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
|
|
||
| #include <sys/socket.h> | ||
| #include <sys/ioctl.h> | ||
|
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| #include <linux/if.h> | ||
| #include <linux/net_tstamp.h> | ||
| #include <linux/sockios.h> | ||
|
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||
| static int | ||
| lookup_value(const char **names, int size, const char *name) | ||
| { | ||
| int value; | ||
|
|
||
| for (value = 0; value < size; value++) | ||
| if (names[value] && strcasecmp(names[value], name) == 0) | ||
| return value; | ||
|
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| return -1; | ||
| } | ||
|
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| static const char * | ||
| lookup_name(const char **names, int size, int value) | ||
| { | ||
| return (value >= 0 && value < size) ? names[value] : NULL; | ||
| } | ||
|
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| static void list_names(FILE *f, const char **names, int size) | ||
| { | ||
| int value; | ||
|
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| for (value = 0; value < size; value++) | ||
| if (names[value]) | ||
| fprintf(f, " %s\n", names[value]); | ||
| } | ||
|
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| static const char *tx_types[] = { | ||
| #define TX_TYPE(name) [HWTSTAMP_TX_ ## name] = #name | ||
| TX_TYPE(OFF), | ||
| TX_TYPE(ON), | ||
| TX_TYPE(ONESTEP_SYNC) | ||
| #undef TX_TYPE | ||
| }; | ||
| #define N_TX_TYPES ((int)(sizeof(tx_types) / sizeof(tx_types[0]))) | ||
|
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| static const char *rx_filters[] = { | ||
| #define RX_FILTER(name) [HWTSTAMP_FILTER_ ## name] = #name | ||
| RX_FILTER(NONE), | ||
| RX_FILTER(ALL), | ||
| RX_FILTER(SOME), | ||
| RX_FILTER(PTP_V1_L4_EVENT), | ||
| RX_FILTER(PTP_V1_L4_SYNC), | ||
| RX_FILTER(PTP_V1_L4_DELAY_REQ), | ||
| RX_FILTER(PTP_V2_L4_EVENT), | ||
| RX_FILTER(PTP_V2_L4_SYNC), | ||
| RX_FILTER(PTP_V2_L4_DELAY_REQ), | ||
| RX_FILTER(PTP_V2_L2_EVENT), | ||
| RX_FILTER(PTP_V2_L2_SYNC), | ||
| RX_FILTER(PTP_V2_L2_DELAY_REQ), | ||
| RX_FILTER(PTP_V2_EVENT), | ||
| RX_FILTER(PTP_V2_SYNC), | ||
| RX_FILTER(PTP_V2_DELAY_REQ), | ||
| #undef RX_FILTER | ||
| }; | ||
| #define N_RX_FILTERS ((int)(sizeof(rx_filters) / sizeof(rx_filters[0]))) | ||
|
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| static void usage(void) | ||
| { | ||
| fputs("Usage: hwtstamp_config if_name [tx_type rx_filter]\n" | ||
| "tx_type is any of (case-insensitive):\n", | ||
| stderr); | ||
| list_names(stderr, tx_types, N_TX_TYPES); | ||
| fputs("rx_filter is any of (case-insensitive):\n", stderr); | ||
| list_names(stderr, rx_filters, N_RX_FILTERS); | ||
| } | ||
|
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| int main(int argc, char **argv) | ||
| { | ||
| struct ifreq ifr; | ||
| struct hwtstamp_config config; | ||
| const char *name; | ||
| int sock; | ||
|
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| if ((argc != 2 && argc != 4) || (strlen(argv[1]) >= IFNAMSIZ)) { | ||
| usage(); | ||
| return 2; | ||
| } | ||
|
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| if (argc == 4) { | ||
| config.flags = 0; | ||
| config.tx_type = lookup_value(tx_types, N_TX_TYPES, argv[2]); | ||
| config.rx_filter = lookup_value(rx_filters, N_RX_FILTERS, argv[3]); | ||
| if (config.tx_type < 0 || config.rx_filter < 0) { | ||
| usage(); | ||
| return 2; | ||
| } | ||
| } | ||
|
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| sock = socket(AF_INET, SOCK_DGRAM, 0); | ||
| if (sock < 0) { | ||
| perror("socket"); | ||
| return 1; | ||
| } | ||
|
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| strcpy(ifr.ifr_name, argv[1]); | ||
| ifr.ifr_data = (caddr_t)&config; | ||
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| if (ioctl(sock, (argc == 2) ? SIOCGHWTSTAMP : SIOCSHWTSTAMP, &ifr)) { | ||
| perror("ioctl"); | ||
| return 1; | ||
| } | ||
|
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| printf("flags = %#x\n", config.flags); | ||
| name = lookup_name(tx_types, N_TX_TYPES, config.tx_type); | ||
| if (name) | ||
| printf("tx_type = %s\n", name); | ||
| else | ||
| printf("tx_type = %d\n", config.tx_type); | ||
| name = lookup_name(rx_filters, N_RX_FILTERS, config.rx_filter); | ||
| if (name) | ||
| printf("rx_filter = %s\n", name); | ||
| else | ||
| printf("rx_filter = %d\n", config.rx_filter); | ||
|
|
||
| return 0; | ||
| } |
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