* that either displays or sets the characteristics of
* one or more of the system's networking interfaces.
*
- * Version: $Id: interface.c,v 1.18 2003/07/28 06:35:32 andersen Exp $
+ * Version: $Id: interface.c,v 1.19 2003/08/02 00:04:18 mjn3 Exp $
*
* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
* and others. Copyright 1993 MicroWalt Corporation
#define new(p) ((p) = xcalloc(1,sizeof(*(p))))
#define KRELEASE(maj,min,patch) ((maj) * 65536 + (min)*256 + (patch))
-static int procnetdev_vsn = 1;
-
#ifdef HAVE_HWSLIP
#include <net/if_slip.h>
#endif
return p;
}
-static int get_dev_fields(char *bp, struct interface *ife)
+/* If scanf supports size qualifiers for %n conversions, then we can
+ * use a modified fmt that simply stores the position in the fields
+ * having no associated fields in the proc string. Of course, we need
+ * to zero them again when we're done. But that is smaller than the
+ * old approach of multiple scanf occurrences with large numbers of
+ * args. */
+
+/* static const char *ss_fmt[] = { */
+/* "%Ln%Lu%lu%lu%lu%lu%ln%ln%Ln%Lu%lu%lu%lu%lu%lu", */
+/* "%Lu%Lu%lu%lu%lu%lu%ln%ln%Lu%Lu%lu%lu%lu%lu%lu", */
+/* "%Lu%Lu%lu%lu%lu%lu%lu%lu%Lu%Lu%lu%lu%lu%lu%lu%lu" */
+/* }; */
+
+ /* Lie about the size of the int pointed to for %n. */
+#if INT_MAX == LONG_MAX
+static const char *ss_fmt[] = {
+ "%n%Lu%u%u%u%u%n%n%n%Lu%u%u%u%u%u",
+ "%Lu%Lu%u%u%u%u%n%n%Lu%Lu%u%u%u%u%u",
+ "%Lu%Lu%u%u%u%u%u%u%Lu%Lu%u%u%u%u%u%u"
+};
+#else
+static const char *ss_fmt[] = {
+ "%n%Lu%lu%lu%lu%lu%n%n%n%Lu%lu%lu%lu%lu%lu",
+ "%Lu%Lu%lu%lu%lu%lu%n%n%Lu%Lu%lu%lu%lu%lu%lu",
+ "%Lu%Lu%lu%lu%lu%lu%lu%lu%Lu%Lu%lu%lu%lu%lu%lu%lu"
+};
+
+#endif
+
+static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn)
{
- switch (procnetdev_vsn) {
- case 3:
- sscanf(bp,
- "%Lu %Lu %lu %lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu %lu",
- &ife->stats.rx_bytes,
- &ife->stats.rx_packets,
- &ife->stats.rx_errors,
- &ife->stats.rx_dropped,
- &ife->stats.rx_fifo_errors,
- &ife->stats.rx_frame_errors,
- &ife->stats.rx_compressed,
- &ife->stats.rx_multicast,
- &ife->stats.tx_bytes,
- &ife->stats.tx_packets,
- &ife->stats.tx_errors,
- &ife->stats.tx_dropped,
- &ife->stats.tx_fifo_errors,
- &ife->stats.collisions,
- &ife->stats.tx_carrier_errors, &ife->stats.tx_compressed);
- break;
- case 2:
- sscanf(bp, "%Lu %Lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu",
- &ife->stats.rx_bytes,
- &ife->stats.rx_packets,
- &ife->stats.rx_errors,
- &ife->stats.rx_dropped,
- &ife->stats.rx_fifo_errors,
- &ife->stats.rx_frame_errors,
- &ife->stats.tx_bytes,
- &ife->stats.tx_packets,
- &ife->stats.tx_errors,
- &ife->stats.tx_dropped,
- &ife->stats.tx_fifo_errors,
- &ife->stats.collisions, &ife->stats.tx_carrier_errors);
- ife->stats.rx_multicast = 0;
- break;
- case 1:
- sscanf(bp, "%Lu %lu %lu %lu %lu %Lu %lu %lu %lu %lu %lu",
- &ife->stats.rx_packets,
- &ife->stats.rx_errors,
- &ife->stats.rx_dropped,
- &ife->stats.rx_fifo_errors,
- &ife->stats.rx_frame_errors,
- &ife->stats.tx_packets,
- &ife->stats.tx_errors,
- &ife->stats.tx_dropped,
- &ife->stats.tx_fifo_errors,
- &ife->stats.collisions, &ife->stats.tx_carrier_errors);
- ife->stats.rx_bytes = 0;
- ife->stats.tx_bytes = 0;
+ memset(&ife->stats, 0, sizeof(struct user_net_device_stats));
+
+ sscanf(bp, ss_fmt[procnetdev_vsn],
+ &ife->stats.rx_bytes, /* missing for 0 */
+ &ife->stats.rx_packets,
+ &ife->stats.rx_errors,
+ &ife->stats.rx_dropped,
+ &ife->stats.rx_fifo_errors,
+ &ife->stats.rx_frame_errors,
+ &ife->stats.rx_compressed, /* missing for <= 1 */
+ &ife->stats.rx_multicast, /* missing for <= 1 */
+ &ife->stats.tx_bytes, /* missing for 0 */
+ &ife->stats.tx_packets,
+ &ife->stats.tx_errors,
+ &ife->stats.tx_dropped,
+ &ife->stats.tx_fifo_errors,
+ &ife->stats.collisions,
+ &ife->stats.tx_carrier_errors,
+ &ife->stats.tx_compressed /* missing for <= 1 */
+ );
+
+ if (procnetdev_vsn <= 1) {
+ if (procnetdev_vsn == 0) {
+ ife->stats.rx_bytes = 0;
+ ife->stats.tx_bytes = 0;
+ }
ife->stats.rx_multicast = 0;
- break;
+ ife->stats.rx_compressed = 0;
+ ife->stats.tx_compressed = 0;
}
- return 0;
}
static inline int procnetdev_version(char *buf)
{
if (strstr(buf, "compressed"))
- return 3;
- if (strstr(buf, "bytes"))
return 2;
- return 1;
+ if (strstr(buf, "bytes"))
+ return 1;
+ return 0;
}
static int if_readlist_proc(char *target)
FILE *fh;
char buf[512];
struct interface *ife;
- int err;
+ int err, procnetdev_vsn;
if (proc_read)
return 0;
fgets(buf, sizeof buf, fh); /* eat line */
fgets(buf, sizeof buf, fh);
-#if 0 /* pretty, but can't cope with missing fields */
- fmt = proc_gen_fmt(_PATH_PROCNET_DEV, 1, fh, "face", "", /* parsed separately */
- "bytes", "%lu",
- "packets", "%lu",
- "errs", "%lu",
- "drop", "%lu",
- "fifo", "%lu",
- "frame", "%lu",
- "compressed", "%lu",
- "multicast", "%lu",
- "bytes", "%lu",
- "packets", "%lu",
- "errs", "%lu",
- "drop", "%lu",
- "fifo", "%lu",
- "colls", "%lu",
- "carrier", "%lu", "compressed", "%lu", NULL);
- if (!fmt)
- return -1;
-#else
procnetdev_vsn = procnetdev_version(buf);
-#endif
err = 0;
while (fgets(buf, sizeof buf, fh)) {
s = get_name(name, buf);
ife = add_interface(name);
- get_dev_fields(s, ife);
+ get_dev_fields(s, ife, procnetdev_vsn);
ife->statistics_valid = 1;
if (target && !strcmp(target, name))
break;
err = -1;
proc_read = 0;
}
-#if 0
- free(fmt);
-#endif
fclose(fh);
return err;
}
#endif /* KEEP_UNUSED */
#ifdef IFF_PORTSEL
-static const char *if_port_text[][4] = {
+#if 0
+static const char * const if_port_text[][4] = {
/* Keep in step with <linux/netdevice.h> */
{"unknown", NULL, NULL, NULL},
{"10base2", "bnc", "coax", NULL},
{"100baseFX", NULL, NULL, NULL},
{NULL, NULL, NULL, NULL},
};
+#else
+static const char * const if_port_text[] = {
+ /* Keep in step with <linux/netdevice.h> */
+ "unknown",
+ "10base2",
+ "10baseT",
+ "AUI",
+ "100baseT",
+ "100baseTX",
+ "100baseFX",
+ NULL
+};
+#endif
#endif
/* Check our hardware type table for this type. */
return 1;
}
-static const char TRext[] = "\0\0k\0M";
+#warning devel code
+static const char TRext[] = "\0\0\0Ki\0Mi\0Gi\0Ti";
static void print_bytes_scaled(unsigned long long ull, const char *end)
{
unsigned long long int_part;
- unsigned long frac_part;
const char *ext;
+ unsigned int frac_part;
int i;
frac_part = 0;
ext = TRext;
int_part = ull;
- for (i = 0; i < 2; i++) {
+ i = 4;
+ do {
+#if 0
+ /* This does correct rounding and is a little larger. But it
+ * uses KiB as the smallest displayed unit. */
+ if ((int_part < (1024*1024 - 51)) || !--i) {
+ i = 0;
+ int_part += 51; /* 1024*.05 = 51.2 */
+ frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
+ }
+ int_part /= 1024;
+ ext += 3; /* KiB, MiB, GiB, TiB */
+#else
if (int_part >= 1024) {
- frac_part = ((int_part % 1024) * 10) / 1024;
+ frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
int_part /= 1024;
- ext += 2; /* Kb, Mb */
+ ext += 3; /* KiB, MiB, GiB, TiB */
}
- }
+ --i;
+#endif
+ } while (i);
- printf("X bytes:%Lu (%Lu.%lu %siB)%s", ull, int_part, frac_part, ext, end);
+ printf("X bytes:%Lu (%Lu.%u %sB)%s", ull, int_part, frac_part, ext, end);
}
+static const char * const ife_print_flags_strs[] = {
+ "UP ",
+ "BROADCAST ",
+ "DEBUG ",
+ "LOOPBACK ",
+ "POINTOPOINT ",
+ "NOTRAILERS ",
+ "RUNNING ",
+ "NOARP ",
+ "PROMISC ",
+ "ALLMULTI ",
+ "SLAVE ",
+ "MASTER ",
+ "MULTICAST ",
+#ifdef HAVE_DYNAMIC
+ "DYNAMIC "
+#endif
+};
+
+static const unsigned short ife_print_flags_mask[] = {
+ IFF_UP,
+ IFF_BROADCAST,
+ IFF_DEBUG,
+ IFF_LOOPBACK,
+ IFF_POINTOPOINT,
+ IFF_NOTRAILERS,
+ IFF_RUNNING,
+ IFF_NOARP,
+ IFF_PROMISC,
+ IFF_ALLMULTI,
+ IFF_SLAVE,
+ IFF_MASTER,
+ IFF_MULTICAST,
+#ifdef HAVE_DYNAMIC
+ IFF_DYNAMIC
+#endif
+ 0
+};
+
static void ife_print(struct interface *ptr)
{
struct aftype *ap;
printf(_("HWaddr %s "), hw->print(ptr->hwaddr));
#ifdef IFF_PORTSEL
if (ptr->flags & IFF_PORTSEL) {
- printf(_("Media:%s"), if_port_text[ptr->map.port][0]);
+ printf(_("Media:%s"), if_port_text[ptr->map.port] /* [0] */);
if (ptr->flags & IFF_AUTOMEDIA)
printf(_("(auto)"));
}
printf(" ");
/* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
- if (ptr->flags == 0)
+
+ if (ptr->flags == 0) {
printf(_("[NO FLAGS] "));
- if (ptr->flags & IFF_UP)
- printf(_("UP "));
- if (ptr->flags & IFF_BROADCAST)
- printf(_("BROADCAST "));
- if (ptr->flags & IFF_DEBUG)
- printf(_("DEBUG "));
- if (ptr->flags & IFF_LOOPBACK)
- printf(_("LOOPBACK "));
- if (ptr->flags & IFF_POINTOPOINT)
- printf(_("POINTOPOINT "));
- if (ptr->flags & IFF_NOTRAILERS)
- printf(_("NOTRAILERS "));
- if (ptr->flags & IFF_RUNNING)
- printf(_("RUNNING "));
- if (ptr->flags & IFF_NOARP)
- printf(_("NOARP "));
- if (ptr->flags & IFF_PROMISC)
- printf(_("PROMISC "));
- if (ptr->flags & IFF_ALLMULTI)
- printf(_("ALLMULTI "));
- if (ptr->flags & IFF_SLAVE)
- printf(_("SLAVE "));
- if (ptr->flags & IFF_MASTER)
- printf(_("MASTER "));
- if (ptr->flags & IFF_MULTICAST)
- printf(_("MULTICAST "));
-#ifdef HAVE_DYNAMIC
- if (ptr->flags & IFF_DYNAMIC)
- printf(_("DYNAMIC "));
-#endif
+ } else {
+ int i = 0;
+ do {
+ if (ptr->flags & ife_print_flags_mask[i]) {
+ printf(_(ife_print_flags_strs[i]));
+ }
+ } while (ife_print_flags_mask[++i]);
+ }
+
/* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
printf(_(" MTU:%d Metric:%d"), ptr->mtu, ptr->metric ? ptr->metric : 1);
#ifdef SIOCSKEEPALIVE
*/
printf(" ");
- printf(_
- ("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
+ printf(_("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
ptr->stats.rx_packets, ptr->stats.rx_errors,
ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
ptr->stats.rx_frame_errors);
printf(_(" compressed:%lu\n"),
ptr->stats.rx_compressed);
printf(" ");
- printf(_
- ("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
+ printf(_("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
ptr->stats.tx_packets, ptr->stats.tx_errors,
ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
ptr->stats.tx_carrier_errors);
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