1 From 98f68e69e2e950b44e7324bbcc94700705193443 Mon Sep 17 00:00:00 2001
2 From: Jan Kiszka <jan.kiszka@siemens.com>
3 Date: Sun, 1 Jan 2017 15:46:26 +0100
4 Subject: [PATCH 20/32] ivshmem-net: Add ethtool register dump
6 Helps debugging inconsistent states.
8 Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
10 drivers/net/ivshmem-net.c | 31 +++++++++++++++++++++++++++++++
11 1 file changed, 31 insertions(+)
13 diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c
14 index 09484d652add..c52727ef40c1 100644
15 --- a/drivers/net/ivshmem-net.c
16 +++ b/drivers/net/ivshmem-net.c
17 @@ -748,10 +748,41 @@ static void ivshm_net_get_ethtool_stats(struct net_device *ndev,
18 memset(&in->stats, 0, sizeof(in->stats));
21 +#define IVSHM_NET_REGS_LEN (3 * sizeof(u32) + 6 * sizeof(u16))
23 +static int ivshm_net_get_regs_len(struct net_device *ndev)
25 + return IVSHM_NET_REGS_LEN;
28 +static void ivshm_net_get_regs(struct net_device *ndev,
29 + struct ethtool_regs *regs, void *p)
31 + struct ivshm_net *in = netdev_priv(ndev);
35 + *reg32++ = in->lstate;
36 + *reg32++ = in->rstate;
37 + *reg32++ = in->qlen;
39 + reg16 = (u16 *)reg32;
41 + *reg16++ = in->tx.vr.avail ? in->tx.vr.avail->idx : 0;
42 + *reg16++ = in->tx.vr.used ? in->tx.vr.used->idx : 0;
43 + *reg16++ = in->tx.vr.avail ? vring_avail_event(&in->tx.vr) : 0;
45 + *reg16++ = in->rx.vr.avail ? in->rx.vr.avail->idx : 0;
46 + *reg16++ = in->rx.vr.used ? in->rx.vr.used->idx : 0;
47 + *reg16++ = in->rx.vr.avail ? vring_avail_event(&in->rx.vr) : 0;
50 static const struct ethtool_ops ivshm_net_ethtool_ops = {
51 .get_sset_count = ivshm_net_get_sset_count,
52 .get_strings = ivshm_net_get_strings,
53 .get_ethtool_stats = ivshm_net_get_ethtool_stats,
54 + .get_regs_len = ivshm_net_get_regs_len,
55 + .get_regs = ivshm_net_get_regs,
58 static int ivshm_net_probe(struct pci_dev *pdev,