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| author | Wolfgang Grandegger <wg@grandegger.com> | 2010-02-22 22:21:17 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-26 01:48:49 -0800 |
| commit | 52c793f24054f5dc30d228e37e0e19cc8313f086 (patch) | |
| tree | b7ebb686f5c2b0d58d05e42cc9d452adf651a83b /drivers/net/can/dev.c | |
| parent | 78ca90ea995cb86c72cde9308276d2a701bd3c40 (diff) | |
| download | op-kernel-dev-52c793f24054f5dc30d228e37e0e19cc8313f086.zip op-kernel-dev-52c793f24054f5dc30d228e37e0e19cc8313f086.tar.gz | |
can: netlink support for bus-error reporting and counters
This patch makes the bus-error reporting configurable and allows to
retrieve the CAN TX and RX bus error counters via netlink interface.
I have added support for the SJA1000. The TX and RX bus error counters
are also copied to the data fields 6..7 of error messages when state
changes are reported.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/can/dev.c')
| -rw-r--r-- | drivers/net/can/dev.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index f08f120..904aa36 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -574,6 +574,7 @@ static const struct nla_policy can_policy[IFLA_CAN_MAX + 1] = { [IFLA_CAN_BITTIMING_CONST] = { .len = sizeof(struct can_bittiming_const) }, [IFLA_CAN_CLOCK] = { .len = sizeof(struct can_clock) }, + [IFLA_CAN_BERR_COUNTER] = { .len = sizeof(struct can_berr_counter) }, }; static int can_changelink(struct net_device *dev, @@ -649,6 +650,8 @@ static size_t can_get_size(const struct net_device *dev) size += nla_total_size(sizeof(u32)); /* IFLA_CAN_RESTART_MS */ size += sizeof(struct can_bittiming); /* IFLA_CAN_BITTIMING */ size += sizeof(struct can_clock); /* IFLA_CAN_CLOCK */ + if (priv->do_get_berr_counter) /* IFLA_CAN_BERR_COUNTER */ + size += sizeof(struct can_berr_counter); if (priv->bittiming_const) /* IFLA_CAN_BITTIMING_CONST */ size += sizeof(struct can_bittiming_const); @@ -659,6 +662,7 @@ static int can_fill_info(struct sk_buff *skb, const struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); struct can_ctrlmode cm = {.flags = priv->ctrlmode}; + struct can_berr_counter bec; enum can_state state = priv->state; if (priv->do_get_state) @@ -669,6 +673,8 @@ static int can_fill_info(struct sk_buff *skb, const struct net_device *dev) NLA_PUT(skb, IFLA_CAN_BITTIMING, sizeof(priv->bittiming), &priv->bittiming); NLA_PUT(skb, IFLA_CAN_CLOCK, sizeof(cm), &priv->clock); + if (priv->do_get_berr_counter && !priv->do_get_berr_counter(dev, &bec)) + NLA_PUT(skb, IFLA_CAN_BERR_COUNTER, sizeof(bec), &bec); if (priv->bittiming_const) NLA_PUT(skb, IFLA_CAN_BITTIMING_CONST, sizeof(*priv->bittiming_const), priv->bittiming_const); |
