Commit 89527be8 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

net: add IFLA_TSO_{MAX_SIZE|SEGS} attributes 



New netlink attributes IFLA_TSO_MAX_SIZE and IFLA_TSO_MAX_SEGS
are used to report to user-space the device TSO limits.

ip -d link sh dev eth1
...
   tso_max_size 65536 tso_max_segs 65535

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarAlexander Duyck <alexanderduyck@fb.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5cf15ce3

include/uapi/linux/if_link.h

+2 −0
Original line number Diff line number Diff line
@@ -368,6 +368,8 @@ enum { 
	IFLA_PARENT_DEV_NAME,

	IFLA_PARENT_DEV_BUS_NAME,

	IFLA_GRO_MAX_SIZE,

	IFLA_TSO_MAX_SIZE,

	IFLA_TSO_MAX_SEGS,



	__IFLA_MAX

};

net/core/rtnetlink.c

+6 −0
Original line number Diff line number Diff line
@@ -1064,6 +1064,8 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, 
	       + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */

	       + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */

	       + nla_total_size(4) /* IFLA_GRO_MAX_SIZE */

	       + nla_total_size(4) /* IFLA_TSO_MAX_SIZE */

	       + nla_total_size(4) /* IFLA_TSO_MAX_SEGS */

	       + nla_total_size(1) /* IFLA_OPERSTATE */

	       + nla_total_size(1) /* IFLA_LINKMODE */

	       + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
@@ -1769,6 +1771,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, 
	    nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) ||

	    nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) ||

	    nla_put_u32(skb, IFLA_GRO_MAX_SIZE, dev->gro_max_size) ||

	    nla_put_u32(skb, IFLA_TSO_MAX_SIZE, dev->tso_max_size) ||

	    nla_put_u32(skb, IFLA_TSO_MAX_SEGS, dev->tso_max_segs) ||

#ifdef CONFIG_RPS

	    nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||

#endif
@@ -1922,6 +1926,8 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = { 
	[IFLA_NEW_IFINDEX]	= NLA_POLICY_MIN(NLA_S32, 1),

	[IFLA_PARENT_DEV_NAME]	= { .type = NLA_NUL_STRING },

	[IFLA_GRO_MAX_SIZE]	= { .type = NLA_U32 },

	[IFLA_TSO_MAX_SIZE]	= { .type = NLA_REJECT },

	[IFLA_TSO_MAX_SEGS]	= { .type = NLA_REJECT },

};



static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {

tools/include/uapi/linux/if_link.h

+2 −0
Original line number Diff line number Diff line
@@ -348,6 +348,8 @@ enum { 
	IFLA_PARENT_DEV_NAME,

	IFLA_PARENT_DEV_BUS_NAME,

	IFLA_GRO_MAX_SIZE,

	IFLA_TSO_MAX_SIZE,

	IFLA_TSO_MAX_SEGS,



	__IFLA_MAX

};