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report delta counters rather than cumulative ones

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Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin
2021-05-21 17:38:58 +02:00
parent 7f0726ba03
commit 5115b6ff41
1 changed files with 47 additions and 13 deletions
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60
netdev.c
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@@ -9,8 +9,10 @@ struct iface_ip {
struct iface {
struct avl_node avl;
int alive;
char name[IF_NAMESIZE];
struct rtnl_link_stats stats;
struct rtnl_link_stats stats_old;
struct list_head ipv6, ipv4;
uint8_t addr[ETH_ALEN];
};
@@ -20,12 +22,15 @@ iface_find(char *name)
{
struct iface *iface = avl_find_element(&iface_tree, name, iface, avl);
if (iface)
if (iface) {
iface->alive = 1;
return iface;
}
iface = malloc(sizeof(*iface));
if (!iface)
return NULL;
memset(iface, 0, sizeof(*iface));
iface->alive = 1;
iface->avl.key = strcpy(iface->name, name);
INIT_LIST_HEAD(&iface->ipv4);
INIT_LIST_HEAD(&iface->ipv6);
@@ -119,11 +124,26 @@ iface_flush(void)
list_del(&ip->list);
free(ip);
}
avl_delete(&iface_tree, &iface->avl);
free(iface);
if (!iface->alive) {
avl_delete(&iface_tree, &iface->avl);
free(iface);
}
iface->alive = 0;
}
}
static int get_counter_delta(__u32 new, __u32 old)
{
uint32_t delta;
if (new < old)
delta = UINT32_MAX - old + new;
else
delta = new - old;
return delta;
}
void
iface_dump(void)
{
@@ -136,6 +156,9 @@ iface_dump(void)
struct iface_ip *ip;
void *c, *d;
if (!iface->alive)
continue;
c = blobmsg_open_table(&b, interface_resolve(iface->name));
blobmsg_add_mac(&b, "hwaddr", iface->addr);
if (!list_empty(&iface->ipv4)) {
@@ -153,17 +176,28 @@ iface_dump(void)
}
d = blobmsg_open_table(&b, "stats");
blobmsg_add_u32(&b, "rx_packets", iface->stats.rx_packets);
blobmsg_add_u32(&b, "tx_packets", iface->stats.tx_packets);
blobmsg_add_u32(&b, "rx_bytes", iface->stats.rx_bytes);
blobmsg_add_u32(&b, "tx_bytes", iface->stats.tx_bytes);
blobmsg_add_u32(&b, "rx_errors", iface->stats.rx_errors);
blobmsg_add_u32(&b, "tx_errors", iface->stats.tx_errors);
blobmsg_add_u32(&b, "rx_dropped", iface->stats.rx_dropped);
blobmsg_add_u32(&b, "tx_dropped", iface->stats.tx_dropped);
blobmsg_add_u32(&b, "multicast", iface->stats.multicast);
blobmsg_add_u32(&b, "collisions", iface->stats.collisions);
blobmsg_add_u32(&b, "rx_packets",
get_counter_delta(iface->stats.rx_packets, iface->stats_old.rx_packets));
blobmsg_add_u32(&b, "tx_packets",
get_counter_delta(iface->stats.tx_packets, iface->stats_old.tx_packets));
blobmsg_add_u32(&b, "rx_bytes",
get_counter_delta(iface->stats.rx_bytes, iface->stats_old.rx_bytes));
blobmsg_add_u32(&b, "tx_bytes",
get_counter_delta(iface->stats.tx_bytes, iface->stats_old.tx_bytes));
blobmsg_add_u32(&b, "rx_errors",
get_counter_delta(iface->stats.rx_errors, iface->stats_old.rx_errors));
blobmsg_add_u32(&b, "tx_errors",
get_counter_delta(iface->stats.tx_errors, iface->stats_old.tx_errors));
blobmsg_add_u32(&b, "rx_dropped",
get_counter_delta(iface->stats.rx_dropped, iface->stats_old.rx_dropped));
blobmsg_add_u32(&b, "tx_dropped",
get_counter_delta(iface->stats.tx_dropped, iface->stats_old.tx_dropped));
blobmsg_add_u32(&b, "multicast",
get_counter_delta(iface->stats.multicast, iface->stats_old.multicast));
blobmsg_add_u32(&b, "collisions",
get_counter_delta(iface->stats.collisions, iface->stats_old.collisions));
blobmsg_close_table(&b, d);
memcpy(&iface->stats_old, &iface->stats, sizeof(iface->stats));
bridge_dump_if(iface->name);
blobmsg_close_table(&b, c);