From d49010adae737638447369a4eff8f1aab736b076 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Sun, 26 Nov 2023 15:07:38 -0800 Subject: net: page_pool: expose page pool stats via netlink Dump the stats into netlink. More clever approaches like dumping the stats per-CPU for each CPU individually to see where the packets get consumed can be implemented in the future. A trimmed example from a real (but recently booted system): $ ./cli.py --no-schema --spec netlink/specs/netdev.yaml \ --dump page-pool-stats-get [{'info': {'id': 19, 'ifindex': 2}, 'alloc-empty': 48, 'alloc-fast': 3024, 'alloc-refill': 0, 'alloc-slow': 48, 'alloc-slow-high-order': 0, 'alloc-waive': 0, 'recycle-cache-full': 0, 'recycle-cached': 0, 'recycle-released-refcnt': 0, 'recycle-ring': 0, 'recycle-ring-full': 0}, {'info': {'id': 18, 'ifindex': 2}, 'alloc-empty': 66, 'alloc-fast': 11811, 'alloc-refill': 35, 'alloc-slow': 66, 'alloc-slow-high-order': 0, 'alloc-waive': 0, 'recycle-cache-full': 1145, 'recycle-cached': 6541, 'recycle-released-refcnt': 0, 'recycle-ring': 1275, 'recycle-ring-full': 0}, {'info': {'id': 17, 'ifindex': 2}, 'alloc-empty': 73, 'alloc-fast': 62099, 'alloc-refill': 413, ... Acked-by: Jesper Dangaard Brouer Signed-off-by: Jakub Kicinski Signed-off-by: Paolo Abeni --- include/uapi/linux/netdev.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h index 756410274120..2b37233e00c0 100644 --- a/include/uapi/linux/netdev.h +++ b/include/uapi/linux/netdev.h @@ -76,6 +76,24 @@ enum { NETDEV_A_PAGE_POOL_MAX = (__NETDEV_A_PAGE_POOL_MAX - 1) }; +enum { + NETDEV_A_PAGE_POOL_STATS_INFO = 1, + NETDEV_A_PAGE_POOL_STATS_ALLOC_FAST = 8, + NETDEV_A_PAGE_POOL_STATS_ALLOC_SLOW, + NETDEV_A_PAGE_POOL_STATS_ALLOC_SLOW_HIGH_ORDER, + NETDEV_A_PAGE_POOL_STATS_ALLOC_EMPTY, + NETDEV_A_PAGE_POOL_STATS_ALLOC_REFILL, + NETDEV_A_PAGE_POOL_STATS_ALLOC_WAIVE, + NETDEV_A_PAGE_POOL_STATS_RECYCLE_CACHED, + NETDEV_A_PAGE_POOL_STATS_RECYCLE_CACHE_FULL, + NETDEV_A_PAGE_POOL_STATS_RECYCLE_RING, + NETDEV_A_PAGE_POOL_STATS_RECYCLE_RING_FULL, + NETDEV_A_PAGE_POOL_STATS_RECYCLE_RELEASED_REFCNT, + + __NETDEV_A_PAGE_POOL_STATS_MAX, + NETDEV_A_PAGE_POOL_STATS_MAX = (__NETDEV_A_PAGE_POOL_STATS_MAX - 1) +}; + enum { NETDEV_CMD_DEV_GET = 1, NETDEV_CMD_DEV_ADD_NTF, @@ -85,6 +103,7 @@ enum { NETDEV_CMD_PAGE_POOL_ADD_NTF, NETDEV_CMD_PAGE_POOL_DEL_NTF, NETDEV_CMD_PAGE_POOL_CHANGE_NTF, + NETDEV_CMD_PAGE_POOL_STATS_GET, __NETDEV_CMD_MAX, NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1) -- cgit v1.2.3