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xsk: Add xdp statistics to xsk_diag 

Add xdp statistics to the information dumped through the xsk_diag interface

Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200708072835.4427-4-ciara.loftus@intel.com
This commit is contained in:
Ciara Loftus 2020-07-08 07:28:35 +00:00 committed by Alexei Starovoitov
parent b36c3206f9
commit 0d80cb4612
2 changed files with 28 additions and 0 deletions
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11
include/uapi/linux/xdp_diag.h
View File

@ -30,6 +30,7 @@ struct xdp_diag_msg {
#define XDP_SHOW_RING_CFG (1 << 1)
#define XDP_SHOW_UMEM (1 << 2)
#define XDP_SHOW_MEMINFO (1 << 3)
#define XDP_SHOW_STATS (1 << 4)
enum {
XDP_DIAG_NONE,
@ -41,6 +42,7 @@ enum {
XDP_DIAG_UMEM_FILL_RING,
XDP_DIAG_UMEM_COMPLETION_RING,
XDP_DIAG_MEMINFO,
XDP_DIAG_STATS,
__XDP_DIAG_MAX,
};
@ -69,4 +71,13 @@ struct xdp_diag_umem {
__u32 refs;
};
struct xdp_diag_stats {
__u64 n_rx_dropped;
__u64 n_rx_invalid;
__u64 n_rx_full;
__u64 n_fill_ring_empty;
__u64 n_tx_invalid;
__u64 n_tx_ring_empty;
};
#endif /* _LINUX_XDP_DIAG_H */

17
net/xdp/xsk_diag.c
View File

@ -76,6 +76,19 @@ static int xsk_diag_put_umem(const struct xdp_sock *xs, struct sk_buff *nlskb)
return err;
}
static int xsk_diag_put_stats(const struct xdp_sock *xs, struct sk_buff *nlskb)
{
struct xdp_diag_stats du = {};
du.n_rx_dropped = xs->rx_dropped;
du.n_rx_invalid = xskq_nb_invalid_descs(xs->rx);
du.n_rx_full = xs->rx_queue_full;
du.n_fill_ring_empty = xs->umem ? xskq_nb_queue_empty_descs(xs->umem->fq) : 0;
du.n_tx_invalid = xskq_nb_invalid_descs(xs->tx);
du.n_tx_ring_empty = xskq_nb_queue_empty_descs(xs->tx);
return nla_put(nlskb, XDP_DIAG_STATS, sizeof(du), &du);
}
static int xsk_diag_fill(struct sock *sk, struct sk_buff *nlskb,
struct xdp_diag_req *req,
struct user_namespace *user_ns,
@ -118,6 +131,10 @@ static int xsk_diag_fill(struct sock *sk, struct sk_buff *nlskb,
sock_diag_put_meminfo(sk, nlskb, XDP_DIAG_MEMINFO))
goto out_nlmsg_trim;
if ((req->xdiag_show & XDP_SHOW_STATS) &&
xsk_diag_put_stats(xs, nlskb))
goto out_nlmsg_trim;
mutex_unlock(&xs->mutex);
nlmsg_end(nlskb, nlh);
return 0;