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Date: Mon, 21 Feb 2011 19:17:50 +0000
From: Ben Hutchings <bhutchings@...arflare.com>
To: netdev@...r.kernel.org
Subject: [PATCH ethtool 1/5] ethtool: Split show_usage() into two functions
show_usage(0) and show_usage(1) now do unrelated things; split it
into show_usage() and exit_bad_args().
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
ethtool.c | 144 +++++++++++++++++++++++++++++++------------------------------
1 files changed, 73 insertions(+), 71 deletions(-)
diff --git a/ethtool.c b/ethtool.c
index f680b6d..b9422d3 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -268,32 +268,32 @@ static struct option {
};
-static void show_usage(int badarg) __attribute__((noreturn));
+static void exit_bad_args(void) __attribute__((noreturn));
-static void show_usage(int badarg)
+static void exit_bad_args(void)
+{
+ fprintf(stderr,
+ "ethtool: bad command line argument(s)\n"
+ "For more information run ethtool -h\n");
+ exit(1);
+}
+
+static void show_usage(void)
{
int i;
- if (badarg != 0) {
- fprintf(stderr,
- "ethtool: bad command line argument(s)\n"
- "For more information run ethtool -h\n"
- );
- }
- else {
- /* ethtool -h */
- fprintf(stdout, PACKAGE " version " VERSION "\n");
- fprintf(stdout,
+
+ /* ethtool -h */
+ fprintf(stdout, PACKAGE " version " VERSION "\n");
+ fprintf(stdout,
"Usage:\n"
"ethtool DEVNAME\tDisplay standard information about device\n");
- for (i = 0; args[i].srt; i++) {
- fprintf(stdout, " ethtool %s|%s %s\t%s\n%s",
- args[i].srt, args[i].lng,
- strstr(args[i].srt, "-h") ? "\t" : "DEVNAME",
- args[i].help,
- args[i].opthelp ? args[i].opthelp : "");
- }
+ for (i = 0; args[i].srt; i++) {
+ fprintf(stdout, " ethtool %s|%s %s\t%s\n%s",
+ args[i].srt, args[i].lng,
+ strstr(args[i].srt, "-h") ? "\t" : "DEVNAME",
+ args[i].help,
+ args[i].opthelp ? args[i].opthelp : "");
}
- exit(badarg);
}
static char *devname = NULL;
@@ -612,11 +612,11 @@ get_int_range(char *str, int base, long long min, long long max)
char *endp;
if (!str)
- show_usage(1);
+ exit_bad_args();
errno = 0;
v = strtoll(str, &endp, base);
if (errno || *endp || v < min || v > max)
- show_usage(1);
+ exit_bad_args();
return v;
}
@@ -627,11 +627,11 @@ get_uint_range(char *str, int base, unsigned long long max)
char *endp;
if (!str)
- show_usage(1);
+ exit_bad_args();
errno = 0;
v = strtoull(str, &endp, base);
if ( errno || *endp || v > max)
- show_usage(1);
+ exit_bad_args();
return v;
}
@@ -664,7 +664,7 @@ static void parse_generic_cmdline(int argc, char **argp,
*(int *)info[idx].seen_val = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
switch (info[idx].type) {
case CMDL_BOOL: {
int *p = info[idx].wanted_val;
@@ -673,7 +673,7 @@ static void parse_generic_cmdline(int argc, char **argp,
else if (!strcmp(argp[i], "off"))
*p = 0;
else
- show_usage(1);
+ exit_bad_args();
break;
}
case CMDL_S32: {
@@ -712,7 +712,7 @@ static void parse_generic_cmdline(int argc, char **argp,
u32 *p = info[idx].wanted_val;
struct in_addr in;
if (!inet_aton(argp[i], &in))
- show_usage(1);
+ exit_bad_args();
*p = in.s_addr;
break;
}
@@ -728,7 +728,7 @@ static void parse_generic_cmdline(int argc, char **argp,
p = info[idx].wanted_val;
*p |= info[idx].flag_val;
} else if (strcmp(argp[i], "off")) {
- show_usage(1);
+ exit_bad_args();
}
break;
}
@@ -738,13 +738,13 @@ static void parse_generic_cmdline(int argc, char **argp,
break;
}
default:
- show_usage(1);
+ exit_bad_args();
}
break;
}
}
if( !found)
- show_usage(1);
+ exit_bad_args();
}
}
@@ -808,10 +808,12 @@ static void parse_cmdline(int argc, char **argp)
break;
}
if (mode == MODE_HELP ||
- (!args[k].srt && argp[i][0] == '-'))
- show_usage(0);
- else
+ (!args[k].srt && argp[i][0] == '-')) {
+ show_usage();
+ exit(0);
+ } else {
devname = argp[i];
+ }
break;
case 2:
if ((mode == MODE_SSET) ||
@@ -850,7 +852,7 @@ static void parse_cmdline(int argc, char **argp)
} else if (!strcmp(argp[i], "offline")) {
test_type = OFFLINE;
} else {
- show_usage(1);
+ exit_bad_args();
}
break;
} else if (mode == MODE_PHYS_ID) {
@@ -923,14 +925,14 @@ static void parse_cmdline(int argc, char **argp)
if (!strcmp(argp[i], "flow-type")) {
i += 1;
if (i >= argc) {
- show_usage(1);
+ exit_bad_args();
break;
}
parse_rxntupleopts(argc, argp, i);
i = argc;
break;
} else {
- show_usage(1);
+ exit_bad_args();
}
break;
}
@@ -938,54 +940,54 @@ static void parse_cmdline(int argc, char **argp)
if (!strcmp(argp[i], "rx-flow-hash")) {
i += 1;
if (i >= argc) {
- show_usage(1);
+ exit_bad_args();
break;
}
rx_fhash_get =
rxflow_str_to_type(argp[i]);
if (!rx_fhash_get)
- show_usage(1);
+ exit_bad_args();
} else
- show_usage(1);
+ exit_bad_args();
break;
}
if (mode == MODE_FLASHDEV) {
flash_region = strtol(argp[i], NULL, 0);
if ((flash_region < 0))
- show_usage(1);
+ exit_bad_args();
break;
}
if (mode == MODE_SNFC) {
if (!strcmp(argp[i], "rx-flow-hash")) {
i += 1;
if (i >= argc) {
- show_usage(1);
+ exit_bad_args();
break;
}
rx_fhash_set =
rxflow_str_to_type(argp[i]);
if (!rx_fhash_set) {
- show_usage(1);
+ exit_bad_args();
break;
}
i += 1;
if (i >= argc) {
- show_usage(1);
+ exit_bad_args();
break;
}
if (parse_rxfhashopts(argp[i],
&rx_fhash_val) < 0)
- show_usage(1);
+ exit_bad_args();
else
rx_fhash_changed = 1;
} else
- show_usage(1);
+ exit_bad_args();
break;
}
if (mode == MODE_SRXFHINDIR) {
if (!strcmp(argp[i], "equal")) {
if (argc != i + 2) {
- show_usage(1);
+ exit_bad_args();
break;
}
i += 1;
@@ -996,42 +998,42 @@ static void parse_cmdline(int argc, char **argp)
} else if (!strcmp(argp[i], "weight")) {
i += 1;
if (i >= argc) {
- show_usage(1);
+ exit_bad_args();
break;
}
rxfhindir_weight = argp + i;
i = argc;
} else {
- show_usage(1);
+ exit_bad_args();
}
break;
}
if (mode != MODE_SSET)
- show_usage(1);
+ exit_bad_args();
if (!strcmp(argp[i], "speed")) {
gset_changed = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
speed_wanted = get_int(argp[i],10);
break;
} else if (!strcmp(argp[i], "duplex")) {
gset_changed = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
if (!strcmp(argp[i], "half"))
duplex_wanted = DUPLEX_HALF;
else if (!strcmp(argp[i], "full"))
duplex_wanted = DUPLEX_FULL;
else
- show_usage(1);
+ exit_bad_args();
break;
} else if (!strcmp(argp[i], "port")) {
gset_changed = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
if (!strcmp(argp[i], "tp"))
port_wanted = PORT_TP;
else if (!strcmp(argp[i], "aui"))
@@ -1043,12 +1045,12 @@ static void parse_cmdline(int argc, char **argp)
else if (!strcmp(argp[i], "fibre"))
port_wanted = PORT_FIBRE;
else
- show_usage(1);
+ exit_bad_args();
break;
} else if (!strcmp(argp[i], "autoneg")) {
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
if (!strcmp(argp[i], "on")) {
gset_changed = 1;
autoneg_wanted = AUTONEG_ENABLE;
@@ -1056,56 +1058,56 @@ static void parse_cmdline(int argc, char **argp)
gset_changed = 1;
autoneg_wanted = AUTONEG_DISABLE;
} else {
- show_usage(1);
+ exit_bad_args();
}
break;
} else if (!strcmp(argp[i], "advertise")) {
gset_changed = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
advertising_wanted = get_int(argp[i], 16);
break;
} else if (!strcmp(argp[i], "phyad")) {
gset_changed = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
phyad_wanted = get_int(argp[i], 0);
break;
} else if (!strcmp(argp[i], "xcvr")) {
gset_changed = 1;
i += 1;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
if (!strcmp(argp[i], "internal"))
xcvr_wanted = XCVR_INTERNAL;
else if (!strcmp(argp[i], "external"))
xcvr_wanted = XCVR_EXTERNAL;
else
- show_usage(1);
+ exit_bad_args();
break;
} else if (!strcmp(argp[i], "wol")) {
gwol_changed = 1;
i++;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
if (parse_wolopts(argp[i], &wol_wanted) < 0)
- show_usage(1);
+ exit_bad_args();
wol_change = 1;
break;
} else if (!strcmp(argp[i], "sopass")) {
gwol_changed = 1;
i++;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
get_mac_addr(argp[i], sopass_wanted);
sopass_change = 1;
break;
} else if (!strcmp(argp[i], "msglvl")) {
i++;
if (i >= argc)
- show_usage(1);
+ exit_bad_args();
if (isdigit((unsigned char)argp[i][0])) {
msglvl_changed = 1;
msglvl_mask = ~0;
@@ -1122,7 +1124,7 @@ static void parse_cmdline(int argc, char **argp)
}
break;
}
- show_usage(1);
+ exit_bad_args();
}
}
@@ -1159,9 +1161,9 @@ static void parse_cmdline(int argc, char **argp)
}
if (devname == NULL)
- show_usage(1);
+ exit_bad_args();
if (strlen(devname) >= IFNAMSIZ)
- show_usage(1);
+ exit_bad_args();
}
static void dump_supported(struct ethtool_cmd *ep)
@@ -1512,7 +1514,7 @@ static void get_mac_addr(char *src, unsigned char *dest)
count = sscanf(src, "%2x:%2x:%2x:%2x:%2x:%2x",
&buf[0], &buf[1], &buf[2], &buf[3], &buf[4], &buf[5]);
if (count != ETH_ALEN)
- show_usage(1);
+ exit_bad_args();
for (i = 0; i < count; i++) {
dest[i] = buf[i];
@@ -3026,7 +3028,7 @@ static int do_srxfhindir(int fd, struct ifreq *ifr)
int err;
if (!rxfhindir_equal && !rxfhindir_weight)
- show_usage(1);
+ exit_bad_args();
indir_head.cmd = ETHTOOL_GRXFHINDIR;
indir_head.size = 0;
@@ -3094,7 +3096,7 @@ static int do_flash(int fd, struct ifreq *ifr)
if (flash < 0) {
fprintf(stdout, "Missing filename argument\n");
- show_usage(1);
+ exit_bad_args();
return 98;
}
@@ -3160,7 +3162,7 @@ static int do_srxntuple(int fd, struct ifreq *ifr)
if (err < 0)
perror("Cannot add new RX n-tuple filter");
} else {
- show_usage(1);
+ exit_bad_args();
}
return 0;
--
1.7.3.4
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
--
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