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net: ena: xdp: add queue counters for xdp actions 

When using XDP every ingress packet is passed to an eBPF (xdp) program
which returns an action for this packet.

This patch adds counters for the number of times each such action was
received. It also counts all the invalid actions received from the eBPF
program.

Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sameeh Jubran 2020-09-10 13:07:13 +00:00 committed by David S. Miller
parent 0201bda106
commit 4cd28b214d
3 changed files with 28 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/amazon/ena/ena_ethtool.c
View File

@ -116,6 +116,11 @@ static const struct ena_stats ena_stats_rx_strings[] = {
ENA_STAT_RX_ENTRY(bad_req_id),
ENA_STAT_RX_ENTRY(empty_rx_ring),
ENA_STAT_RX_ENTRY(csum_unchecked),
ENA_STAT_RX_ENTRY(xdp_aborted),
ENA_STAT_RX_ENTRY(xdp_drop),
ENA_STAT_RX_ENTRY(xdp_pass),
ENA_STAT_RX_ENTRY(xdp_tx),
ENA_STAT_RX_ENTRY(xdp_invalid),
};
static const struct ena_stats ena_stats_ena_com_strings[] = {

21
drivers/net/ethernet/amazon/ena/ena_netdev.c
View File

@ -365,6 +365,7 @@ static int ena_xdp_execute(struct ena_ring *rx_ring,
{
struct bpf_prog *xdp_prog;
u32 verdict = XDP_PASS;
u64 *xdp_stat;
rcu_read_lock();
xdp_prog = READ_ONCE(rx_ring->xdp_bpf_prog);
@ -374,17 +375,31 @@ static int ena_xdp_execute(struct ena_ring *rx_ring,
verdict = bpf_prog_run_xdp(xdp_prog, xdp);
if (verdict == XDP_TX)
if (verdict == XDP_TX) {
ena_xdp_xmit_buff(rx_ring->netdev,
xdp,
rx_ring->qid + rx_ring->adapter->num_io_queues,
rx_info);
else if (unlikely(verdict == XDP_ABORTED))
xdp_stat = &rx_ring->rx_stats.xdp_tx;
} else if (unlikely(verdict == XDP_ABORTED)) {
trace_xdp_exception(rx_ring->netdev, xdp_prog, verdict);
else if (unlikely(verdict > XDP_TX))
xdp_stat = &rx_ring->rx_stats.xdp_aborted;
} else if (unlikely(verdict == XDP_DROP)) {
xdp_stat = &rx_ring->rx_stats.xdp_drop;
} else if (unlikely(verdict == XDP_PASS)) {
xdp_stat = &rx_ring->rx_stats.xdp_pass;
} else {
bpf_warn_invalid_xdp_action(verdict);
xdp_stat = &rx_ring->rx_stats.xdp_invalid;
}
u64_stats_update_begin(&rx_ring->syncp);
(*xdp_stat)++;
u64_stats_update_end(&rx_ring->syncp);
out:
rcu_read_unlock();
return verdict;
}

5
drivers/net/ethernet/amazon/ena/ena_netdev.h
View File

@ -261,6 +261,11 @@ struct ena_stats_rx {
u64 bad_req_id;
u64 empty_rx_ring;
u64 csum_unchecked;
u64 xdp_aborted;
u64 xdp_drop;
u64 xdp_pass;
u64 xdp_tx;
u64 xdp_invalid;
};
struct ena_ring {