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drop_monitor: Expose tail drop counter

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Previous patch made the length of the per-CPU skb drop list
configurable. Expose a counter that shows how many packets could not be
enqueued to this list.

This allows users determine the desired queue length.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2019-08-11 10:35:55 +03:00 • committed by David S. Miller
parent 30328d46af
commit e9feb58020
2 changed files with 111 additions and 0 deletions
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10
include/uapi/linux/net_dropmon.h
View file

@ -56,6 +56,8 @@ enum {
NET_DM_CMD_PACKET_ALERT,
NET_DM_CMD_CONFIG_GET,
NET_DM_CMD_CONFIG_NEW,
NET_DM_CMD_STATS_GET,
NET_DM_CMD_STATS_NEW,
_NET_DM_CMD_MAX,
};
@ -80,6 +82,7 @@ enum net_dm_attr {
NET_DM_ATTR_TRUNC_LEN, /* u32 */
NET_DM_ATTR_ORIG_LEN, /* u32 */
NET_DM_ATTR_QUEUE_LEN, /* u32 */
NET_DM_ATTR_STATS, /* nested */
__NET_DM_ATTR_MAX,
NET_DM_ATTR_MAX = __NET_DM_ATTR_MAX - 1
@ -103,4 +106,11 @@ enum {
NET_DM_ATTR_PORT_MAX = __NET_DM_ATTR_PORT_MAX - 1
};
enum {
NET_DM_ATTR_STATS_DROPPED, /* u64 */
__NET_DM_ATTR_STATS_MAX,
NET_DM_ATTR_STATS_MAX = __NET_DM_ATTR_STATS_MAX - 1
};
#endif