diff options
| -rw-r--r-- | include/uapi/linux/if_link.h | 9 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 111 |
2 files changed, 116 insertions, 4 deletions
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 9bf3aecfe05b..2351776a724f 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -826,6 +826,7 @@ enum { IFLA_STATS_LINK_64, IFLA_STATS_LINK_XSTATS, IFLA_STATS_LINK_XSTATS_SLAVE, + IFLA_STATS_LINK_OFFLOAD_XSTATS, __IFLA_STATS_MAX, }; @@ -845,6 +846,14 @@ enum { }; #define LINK_XSTATS_TYPE_MAX (__LINK_XSTATS_TYPE_MAX - 1) +/* These are stats embedded into IFLA_STATS_LINK_OFFLOAD_XSTATS */ +enum { + IFLA_OFFLOAD_XSTATS_UNSPEC, + IFLA_OFFLOAD_XSTATS_CPU_HIT, /* struct rtnl_link_stats64 */ + __IFLA_OFFLOAD_XSTATS_MAX +}; +#define IFLA_OFFLOAD_XSTATS_MAX (__IFLA_OFFLOAD_XSTATS_MAX - 1) + /* XDP section */ enum { diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 937e459bdaa9..0dbae4244a89 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -3577,6 +3577,91 @@ static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) (!idxattr || idxattr == attrid); } +#define IFLA_OFFLOAD_XSTATS_FIRST (IFLA_OFFLOAD_XSTATS_UNSPEC + 1) +static int rtnl_get_offload_stats_attr_size(int attr_id) +{ + switch (attr_id) { + case IFLA_OFFLOAD_XSTATS_CPU_HIT: + return sizeof(struct rtnl_link_stats64); + } + + return 0; +} + +static int rtnl_get_offload_stats(struct sk_buff *skb, struct net_device *dev, + int *prividx) +{ + struct nlattr *attr = NULL; + int attr_id, size; + void *attr_data; + int err; + + if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && + dev->netdev_ops->ndo_get_offload_stats)) + return -ENODATA; + + for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; + attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { + if (attr_id < *prividx) + continue; + + size = rtnl_get_offload_stats_attr_size(attr_id); + if (!size) + continue; + + if (!dev->netdev_ops->ndo_has_offload_stats(attr_id)) + continue; + + attr = nla_reserve_64bit(skb, attr_id, size, + IFLA_OFFLOAD_XSTATS_UNSPEC); + if (!attr) + goto nla_put_failure; + + attr_data = nla_data(attr); + memset(attr_data, 0, size); + err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev, + attr_data); + if (err) + goto get_offload_stats_failure; + } + + if (!attr) + return -ENODATA; + + *prividx = 0; + return 0; + +nla_put_failure: + err = -EMSGSIZE; +get_offload_stats_failure: + *prividx = attr_id; + return err; +} + +static int rtnl_get_offload_stats_size(const struct net_device *dev) +{ + int nla_size = 0; + int attr_id; + int size; + + if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && + dev->netdev_ops->ndo_get_offload_stats)) + return 0; + + for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; + attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { + if (!dev->netdev_ops->ndo_has_offload_stats(attr_id)) + continue; + size = rtnl_get_offload_stats_attr_size(attr_id); + nla_size += nla_total_size_64bit(size); + } + + if (nla_size != 0) + nla_size += nla_total_size(0); + + return nla_size; +} + static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, int type, u32 pid, u32 seq, u32 change, unsigned int flags, unsigned int filter_mask, @@ -3586,6 +3671,7 @@ static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, struct nlmsghdr *nlh; struct nlattr *attr; int s_prividx = *prividx; + int err; ASSERT_RTNL(); @@ -3614,8 +3700,6 @@ static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, 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); @@ -3639,8 +3723,6 @@ static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, if (master) ops = master->rtnl_link_ops; if (ops && ops->fill_linkxstats) { - int err; - *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE; attr = nla_nest_start(skb, IFLA_STATS_LINK_XSTATS_SLAVE); @@ -3655,6 +3737,24 @@ static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, } } + if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, + *idxattr)) { + *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS; + attr = nla_nest_start(skb, IFLA_STATS_LINK_OFFLOAD_XSTATS); + if (!attr) + goto nla_put_failure; + + err = rtnl_get_offload_stats(skb, dev, prividx); + if (err == -ENODATA) + nla_nest_cancel(skb, attr); + else + nla_nest_end(skb, attr); + + if (err && err != -ENODATA) + goto nla_put_failure; + *idxattr = 0; + } + nlmsg_end(skb, nlh); return 0; @@ -3708,6 +3808,9 @@ static size_t if_nlmsg_stats_size(const struct net_device *dev, } } + if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0)) + size += rtnl_get_offload_stats_size(dev); + return size; } |