diff options
| -rw-r--r-- | include/net/rtnetlink.h | 7 | ||||
| -rw-r--r-- | include/uapi/linux/if_link.h | 12 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 30 |
3 files changed, 49 insertions, 0 deletions
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h index 2f87c1b..006a7b8 100644 --- a/include/net/rtnetlink.h +++ b/include/net/rtnetlink.h @@ -47,6 +47,9 @@ static inline int rtnl_msg_family(const struct nlmsghdr *nlh) * @get_num_rx_queues: Function to determine number of receive queues * to create when creating a new device. * @get_link_net: Function to get the i/o netns of the device + * @get_linkxstats_size: Function to calculate the required room for + * dumping device-specific extended link stats + * @fill_linkxstats: Function to dump device-specific extended link stats */ struct rtnl_link_ops { struct list_head list; @@ -95,6 +98,10 @@ struct rtnl_link_ops { const struct net_device *dev, const struct net_device *slave_dev); struct net *(*get_link_net)(const struct net_device *dev); + size_t (*get_linkxstats_size)(const struct net_device *dev); + int (*fill_linkxstats)(struct sk_buff *skb, + const struct net_device *dev, + int *prividx); }; int __rtnl_link_register(struct rtnl_link_ops *ops); diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 3e80974..2bfdb9c 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -810,6 +810,7 @@ struct if_stats_msg { enum { IFLA_STATS_UNSPEC, /* also used as 64bit pad attribute */ IFLA_STATS_LINK_64, + IFLA_STATS_LINK_XSTATS, __IFLA_STATS_MAX, }; @@ -817,4 +818,15 @@ enum { #define IFLA_STATS_FILTER_BIT(ATTR) (1 << (ATTR - 1)) +/* These are embedded into IFLA_STATS_LINK_XSTATS: + * [IFLA_STATS_LINK_XSTATS] + * -> [LINK_XSTATS_TYPE_xxx] + * -> [rtnl link type specific attributes] + */ +enum { + LINK_XSTATS_TYPE_UNSPEC, + __LINK_XSTATS_TYPE_MAX +}; +#define LINK_XSTATS_TYPE_MAX (__LINK_XSTATS_TYPE_MAX - 1) + #endif /* _UAPI_LINUX_IF_LINK_H */ diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index de529a2..d471f09 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -3483,6 +3483,26 @@ static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, dev_get_stats(dev, sp); } + if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { + const struct rtnl_link_ops *ops = dev->rtnl_link_ops; + + if (ops && ops->fill_linkxstats) { + int err; + + *idxattr = IFLA_STATS_LINK_XSTATS; + attr = nla_nest_start(skb, + IFLA_STATS_LINK_XSTATS); + if (!attr) + goto nla_put_failure; + + err = ops->fill_linkxstats(skb, dev, prividx); + nla_nest_end(skb, attr); + if (err) + goto nla_put_failure; + *idxattr = 0; + } + } + nlmsg_end(skb, nlh); return 0; @@ -3509,6 +3529,16 @@ static size_t if_nlmsg_stats_size(const struct net_device *dev, if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); + if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { + const struct rtnl_link_ops *ops = dev->rtnl_link_ops; + + if (ops && ops->get_linkxstats_size) { + size += nla_total_size(ops->get_linkxstats_size(dev)); + /* for IFLA_STATS_LINK_XSTATS */ + size += nla_total_size(0); + } + } + return size; } |