From: Eric Dumazet Date: Mon, 21 Mar 2016 16:55:10 +0000 (-0700) Subject: net/rtnetlink: add IFLA_GSO_MAX_SEGS and IFLA_GSO_MAX_SIZE attributes X-Git-Tag: v4.6-rc1~38^2~25^2~1 X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=c70ce028e834f8e51306217dbdbd441d851c64d3;hp=7d34fa75d3ee99a90ebb33c2917aa9152fb36a9c;p=cascardo%2Flinux.git net/rtnetlink: add IFLA_GSO_MAX_SEGS and IFLA_GSO_MAX_SIZE attributes It can be useful to report dev->gso_max_segs and dev->gso_max_size so that "ip -d link" can display them to help debugging. For the moment, these attributes are read-only. Signed-off-by: Eric Dumazet Cc: Petri Gynther Cc: Stephen Hemminger Signed-off-by: David S. Miller --- diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 8e3f88fa5b59..76d315ca597d 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -153,6 +153,8 @@ enum { IFLA_LINK_NETNSID, IFLA_PHYS_PORT_NAME, IFLA_PROTO_DOWN, + IFLA_GSO_MAX_SEGS, + IFLA_GSO_MAX_SIZE, __IFLA_MAX }; diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index d2d9e5ebf58e..a69cd0c097b5 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -895,6 +895,8 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, + nla_total_size(4) /* IFLA_PROMISCUITY */ + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ + + nla_total_size(4) /* IFLA_MAX_GSO_SEGS */ + + nla_total_size(4) /* IFLA_MAX_GSO_SIZE */ + nla_total_size(1) /* IFLA_OPERSTATE */ + nla_total_size(1) /* IFLA_LINKMODE */ + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ @@ -1223,6 +1225,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, nla_put_u32(skb, IFLA_GROUP, dev->group) || nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || + nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || + nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || #ifdef CONFIG_RPS nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || #endif