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authorAmir Vadai <amirv@mellanox.com>2012-04-05 01:33:30 +0400
committerDavid S. Miller <davem@davemloft.net>2012-04-05 13:08:04 +0400
commit08f10affe45051e18e0d8291c0a53aecef1b8a14 (patch)
tree0f18aa6f7d3885f695dfe5ad876363afe03ce6a6 /include
parent366cddb4028858079a9a8145bd713c13a9edb3dc (diff)
downloadlinux-08f10affe45051e18e0d8291c0a53aecef1b8a14.tar.xz
net/dcb: Add an optional max rate attribute
Although not specified in 8021Qaz spec, it could be useful to enable drivers whose HW supports setting a rate limit for an ETS TC. This patch adds this optional attribute to DCB netlink. To use it, drivers should implement and register the callbacks ieee_setmaxrate and ieee_getmaxrate. The units are 64 bits long and specified in Kbps to enable usage over both slow and very fast networks. Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/dcbnl.h12
-rw-r--r--include/net/dcbnl.h2
2 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 65a2562f66b4..6bb43382f3f3 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -67,6 +67,17 @@ struct ieee_ets {
__u8 reco_prio_tc[IEEE_8021QAZ_MAX_TCS];
};
+/* This structure contains rate limit extension to the IEEE 802.1Qaz ETS
+ * managed object.
+ * Values are 64 bits long and specified in Kbps to enable usage over both
+ * slow and very fast networks.
+ *
+ * @tc_maxrate: maximal tc tx bandwidth indexed by traffic class
+ */
+struct ieee_maxrate {
+ __u64 tc_maxrate[IEEE_8021QAZ_MAX_TCS];
+};
+
/* This structure contains the IEEE 802.1Qaz PFC managed object
*
* @pfc_cap: Indicates the number of traffic classes on the local device
@@ -321,6 +332,7 @@ enum ieee_attrs {
DCB_ATTR_IEEE_PEER_ETS,
DCB_ATTR_IEEE_PEER_PFC,
DCB_ATTR_IEEE_PEER_APP,
+ DCB_ATTR_IEEE_MAXRATE,
__DCB_ATTR_IEEE_MAX
};
#define DCB_ATTR_IEEE_MAX (__DCB_ATTR_IEEE_MAX - 1)
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index f55c980d8e23..fc5d5dcebb00 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -48,6 +48,8 @@ struct dcbnl_rtnl_ops {
/* IEEE 802.1Qaz std */
int (*ieee_getets) (struct net_device *, struct ieee_ets *);
int (*ieee_setets) (struct net_device *, struct ieee_ets *);
+ int (*ieee_getmaxrate) (struct net_device *, struct ieee_maxrate *);
+ int (*ieee_setmaxrate) (struct net_device *, struct ieee_maxrate *);
int (*ieee_getpfc) (struct net_device *, struct ieee_pfc *);
int (*ieee_setpfc) (struct net_device *, struct ieee_pfc *);
int (*ieee_getapp) (struct net_device *, struct dcb_app *);