From: Eric Dumazet <eric.dumazet@gmail.com>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: netdev <netdev@vger.kernel.org>, Coco Li <lixiaoyan@google.com>,
Eric Dumazet <edumazet@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: [PATCH v4 net-next 01/12] net: add IFLA_TSO_{MAX_SIZE|SEGS} attributes
Date: Fri, 6 May 2022 08:30:37 -0700 [thread overview]
Message-ID: <20220506153048.3695721-2-eric.dumazet@gmail.com> (raw)
In-Reply-To: <20220506153048.3695721-1-eric.dumazet@gmail.com>
From: Eric Dumazet <edumazet@google.com>
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: Eric Dumazet <edumazet@google.com>
---
include/uapi/linux/if_link.h | 2 ++
net/core/rtnetlink.c | 6 ++++++
tools/include/uapi/linux/if_link.h | 2 ++
3 files changed, 10 insertions(+)
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index d1e600816b82c2e73c3e0684c66ddf9841a75b04..5f58dcfe2787f308bb2aa5777cca0816dd32bbb9 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -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
};
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index e6d4b9272995b7a9b9f83b8868845222f4785edf..512ed661204e0c66c8dcfaddc3001500d10f63ab 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -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] = {
diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h
index e1ba2d51b717b7ac7f06e94ac9791cf4c8a5ab6f..b339bf2196ca160ed3040615ae624b9a028562fb 100644
--- a/tools/include/uapi/linux/if_link.h
+++ b/tools/include/uapi/linux/if_link.h
@@ -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
};
--
2.36.0.512.ge40c2bad7a-goog
next prev parent reply other threads:[~2022-05-06 15:31 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-06 15:30 [PATCH v4 net-next 00/12] tcp: BIG TCP implementation Eric Dumazet
2022-05-06 15:30 ` Eric Dumazet [this message]
2022-05-06 15:30 ` [PATCH v4 net-next 02/12] ipv6: add IFLA_GSO_IPV6_MAX_SIZE Eric Dumazet
2022-05-06 20:48 ` Alexander H Duyck
2022-05-06 21:20 ` Eric Dumazet
2022-05-06 21:37 ` Alexander Duyck
2022-05-06 21:50 ` Eric Dumazet
2022-05-06 22:16 ` Alexander Duyck
2022-05-06 22:25 ` Eric Dumazet
2022-05-06 22:26 ` Jakub Kicinski
2022-05-06 22:46 ` Alexander Duyck
2022-05-06 15:30 ` [PATCH v4 net-next 03/12] tcp_cubic: make hystart_ack_delay() aware of BIG TCP Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 04/12] ipv6: add struct hop_jumbo_hdr definition Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 05/12] ipv6/gso: remove temporary HBH/jumbo header Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 06/12] ipv6/gro: insert " Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 07/12] ipv6: add IFLA_GRO_IPV6_MAX_SIZE Eric Dumazet
2022-05-06 21:06 ` Alexander H Duyck
2022-05-06 21:22 ` Eric Dumazet
2022-05-06 22:01 ` Alexander Duyck
2022-05-06 22:08 ` Eric Dumazet
2022-05-09 18:17 ` [PATCH 0/2] Replacements for patches 2 and 7 in Big TCP series Alexander Duyck
2022-05-09 18:17 ` [PATCH 1/2] net: Allow gso_max_size to exceed 65536 Alexander Duyck
2022-05-09 18:17 ` [PATCH 2/2] net: Allow gro_max_size " Alexander Duyck
2022-05-09 18:54 ` [PATCH 0/2] Replacements for patches 2 and 7 in Big TCP series Eric Dumazet
2022-05-09 20:21 ` Alexander H Duyck
2022-05-09 20:31 ` Eric Dumazet
2022-05-09 21:05 ` Alexander Duyck
2022-05-06 15:30 ` [PATCH v4 net-next 08/12] ipv6: Add hop-by-hop header to jumbograms in ip6_output Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 09/12] net: loopback: enable BIG TCP packets Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 10/12] veth: " Eric Dumazet
2022-05-06 22:33 ` Jakub Kicinski
2022-05-06 15:30 ` [PATCH v4 net-next 11/12] mlx4: support " Eric Dumazet
2022-05-06 15:30 ` [PATCH v4 net-next 12/12] mlx5: " Eric Dumazet
2022-05-06 22:34 ` Jakub Kicinski
2022-05-07 0:32 ` Eric Dumazet
2022-05-07 1:54 ` Jakub Kicinski
2022-05-07 1:54 ` Jakub Kicinski
2022-05-07 2:10 ` Eric Dumazet
2022-05-07 2:37 ` Jakub Kicinski
2022-05-07 2:43 ` Eric Dumazet
2022-05-07 7:16 ` Kees Cook
2022-05-07 7:23 ` Kees Cook
2022-05-07 6:57 ` Kees Cook
2022-05-07 7:46 ` Kees Cook
2022-05-07 11:19 ` Eric Dumazet
2022-05-09 8:05 ` David Laight
2022-05-09 23:20 ` Kees Cook
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