diff options
| author | Daniel Zahka <daniel.zahka@gmail.com> | 2025-11-05 16:26:06 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-11-07 18:53:57 -0800 |
| commit | 178f0763c5f3cf710062ddf2e4d659127fee66b2 (patch) | |
| tree | 3d440363d139d427317e11320316fe4c45bd5df3 | |
| parent | b1346219e5350990ab36cdf8d1b302c1b53fc21a (diff) | |
netdevsim: implement psp device stats
For now only tx/rx packets/bytes are reported. This is not compliant
with the PSP Architecture Specification.
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20251106002608.1578518-6-daniel.zahka@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/netdevsim/netdevsim.h | 5 | ||||
| -rw-r--r-- | drivers/net/netdevsim/psp.c | 27 |
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index 02c1c97b7008..af6fcfcda8ba 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -109,6 +109,11 @@ struct netdevsim { int rq_reset_mode; struct { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; struct psp_dev *dev; u32 spi; u32 assoc_cnt; diff --git a/drivers/net/netdevsim/psp.c b/drivers/net/netdevsim/psp.c index 332b5b744f01..727da06101ca 100644 --- a/drivers/net/netdevsim/psp.c +++ b/drivers/net/netdevsim/psp.c @@ -70,6 +70,13 @@ nsim_do_psp(struct sk_buff *skb, struct netdevsim *ns, *psp_ext = skb->extensions; refcount_inc(&(*psp_ext)->refcnt); skb->decrypted = 1; + + u64_stats_update_begin(&ns->psp.syncp); + ns->psp.tx_packets++; + ns->psp.rx_packets++; + ns->psp.tx_bytes += skb->len - skb_inner_transport_offset(skb); + ns->psp.rx_bytes += skb->len - skb_inner_transport_offset(skb); + u64_stats_update_end(&ns->psp.syncp); } else { struct ipv6hdr *ip6h __maybe_unused; struct iphdr *iph; @@ -164,12 +171,32 @@ static void nsim_assoc_del(struct psp_dev *psd, struct psp_assoc *pas) ns->psp.assoc_cnt--; } +static void nsim_get_stats(struct psp_dev *psd, struct psp_dev_stats *stats) +{ + struct netdevsim *ns = psd->drv_priv; + unsigned int start; + + /* WARNING: do *not* blindly zero stats in real drivers! + * All required stats must be reported by the device! + */ + memset(stats, 0, sizeof(struct psp_dev_stats)); + + do { + start = u64_stats_fetch_begin(&ns->psp.syncp); + stats->rx_bytes = ns->psp.rx_bytes; + stats->rx_packets = ns->psp.rx_packets; + stats->tx_bytes = ns->psp.tx_bytes; + stats->tx_packets = ns->psp.tx_packets; + } while (u64_stats_fetch_retry(&ns->psp.syncp, start)); +} + static struct psp_dev_ops nsim_psp_ops = { .set_config = nsim_psp_set_config, .rx_spi_alloc = nsim_rx_spi_alloc, .tx_key_add = nsim_assoc_add, .tx_key_del = nsim_assoc_del, .key_rotate = nsim_key_rotate, + .get_stats = nsim_get_stats, }; static struct psp_dev_caps nsim_psp_caps = { |