On 11/23/21 9:39 AM, Alexander Lobakin wrote:
> +static bool rtnl_get_xdp_stats_xdpxsk(struct sk_buff *skb, u32 ch,
> + const void *attr_data)
> +{
> + const struct ifla_xdp_stats *xstats = attr_data;
> +
> + xstats += ch;
> +
> + if (nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_PACKETS, xstats->packets,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_BYTES, xstats->bytes,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_ERRORS, xstats->errors,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_ABORTED, xstats->aborted,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_DROP, xstats->drop,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_INVALID, xstats->invalid,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_PASS, xstats->pass,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_REDIRECT, xstats->redirect,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_REDIRECT_ERRORS,
> + xstats->redirect_errors,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_TX, xstats->tx,
> + IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_TX_ERRORS,
> + xstats->tx_errors, IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_XMIT_PACKETS,
> + xstats->xmit_packets, IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_XMIT_BYTES,
> + xstats->xmit_bytes, IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_XMIT_ERRORS,
> + xstats->xmit_errors, IFLA_XDP_XSTATS_UNSPEC) ||
> + nla_put_u64_64bit(skb, IFLA_XDP_XSTATS_XMIT_FULL,
> + xstats->xmit_full, IFLA_XDP_XSTATS_UNSPEC))
> + return false;
> +
> + return true;
> +}
> +
Another thought on this patch: with individual attributes you could save
some overhead by not sending 0 counters to userspace. e.g., define a
helper that does:
static inline int nla_put_u64_if_set(struct sk_buff *skb, int attrtype,
u64 value, int padattr)
{
if (value)
return nla_put_u64_64bit(skb, attrtype, value, padattr);
return 0;
}
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