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Date: Wed, 5 Mar 2014 02:34:29 -0500
From: Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <Dept-HSGLinuxNICDev@...gic.com>
Subject: [RFC 1/1] iproute2: Add support to configure SR-IOV VF minimum and maximum Tx rate through ip tool.
o "min_tx_rate" option has been added for minimum Tx rate. Hence, for
consistent naming, "max_tx_rate" option has been introduced for maximum
Tx rate. And plan is to deprecate "rate" option of ip tool.
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
---
include/linux/if_link.h | 7 +++++++
ip/ipaddress.c | 7 +++++++
ip/iplink.c | 42 ++++++++++++++++++++++++++++++++++++++++++
man/man8/ip-link.8.in | 24 ++++++++++++++++++++++--
4 files changed, 78 insertions(+), 2 deletions(-)
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index f08505c..1ce7f47 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -397,6 +397,7 @@ enum {
IFLA_VF_MAC, /* Hardware queue specific attributes */
IFLA_VF_VLAN,
IFLA_VF_TX_RATE, /* TX Bandwidth Allocation */
+ IFLA_VF_RATE, /* Min and Max TX Bandwidth Allocation */
IFLA_VF_SPOOFCHK, /* Spoof Checking on/off switch */
IFLA_VF_LINK_STATE, /* link state enable/disable/auto switch */
__IFLA_VF_MAX,
@@ -420,6 +421,12 @@ struct ifla_vf_tx_rate {
__u32 rate; /* Max TX bandwidth in Mbps, 0 disables throttling */
};
+struct ifla_vf_rate {
+ __u32 vf;
+ __u32 min_tx_rate; /* Max TX bandwidth in Mbps */
+ __u32 max_tx_rate; /* Min TX bandwidth in Mbps */
+};
+
struct ifla_vf_spoofchk {
__u32 vf;
__u32 setting;
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 14d1720..b2384be 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -245,6 +245,7 @@ static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
{
struct ifla_vf_mac *vf_mac;
struct ifla_vf_vlan *vf_vlan;
+ struct ifla_vf_rate *vf_rate;
struct ifla_vf_tx_rate *vf_tx_rate;
struct ifla_vf_spoofchk *vf_spoofchk;
struct ifla_vf_link_state *vf_linkstate;
@@ -262,6 +263,7 @@ static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
+ vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
/* Check if the spoof checking vf info type is supported by
* this kernel.
@@ -297,6 +299,11 @@ static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
fprintf(fp, ", qos %d", vf_vlan->qos);
if (vf_tx_rate->rate)
fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
+ if (vf_rate->max_tx_rate)
+ fprintf(fp, ", max tx rate %d (Mbps)", vf_rate->max_tx_rate);
+ if (vf_rate->min_tx_rate)
+ fprintf(fp, ", min tx rate %d (Mbps)", vf_rate->min_tx_rate);
+
if (vf_spoofchk && vf_spoofchk->setting != -1) {
if (vf_spoofchk->setting)
fprintf(fp, ", spoof checking on");
diff --git a/ip/iplink.c b/ip/iplink.c
index 6a62cc0..17d0728 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -217,14 +217,35 @@ struct iplink_req {
static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
struct iplink_req *req)
{
+ struct ifla_vf_rate tivt;
int len, argc = *argcp;
char **argv = *argvp;
struct rtattr *vfinfo;
+ char flag = 0, rate_flag = 0, new_rate_flag = 0, count = 0;
+
+ tivt.min_tx_rate 0;
+ tivt.max_tx_rate = 0;
vfinfo = addattr_nest(&req->n, sizeof(*req), IFLA_VF_INFO);
while (NEXT_ARG_OK()) {
NEXT_ARG();
+ if (matches(*argv, "rate") == 0)
+ rate_flag = 1;
+ else if (matches(*argv, "max_tx_rate") == 0 ||
+ matches(*argv, "min_tx_rate") == 0)
+ new_rate_flag = 1;
+ count++;
+ }
+ while (count--)
+ PREV_ARG();
+ if (rate_flag && new_rate_flag) {
+ fprintf(stderr, "rate cannot be used alongwith min_tx_rate/ max_tx_rate\n");
+ return -22;
+ }
+
+ while (NEXT_ARG_OK()) {
+ NEXT_ARG();
if (matches(*argv, "mac") == 0) {
struct ifla_vf_mac ivm;
NEXT_ARG();
@@ -256,6 +277,7 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
addattr_l(&req->n, sizeof(*req), IFLA_VF_VLAN, &ivv, sizeof(ivv));
} else if (matches(*argv, "rate") == 0) {
struct ifla_vf_tx_rate ivt;
+ fprintf(stderr, "WARN: \"rate\" option will be deprecated. Use \"min_tx_rate\" and \"max_tx_rate\" option.\n");
NEXT_ARG();
if (get_unsigned(&ivt.rate, *argv, 0)) {
invarg("Invalid \"rate\" value\n", *argv);
@@ -263,6 +285,22 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
ivt.vf = vf;
addattr_l(&req->n, sizeof(*req), IFLA_VF_TX_RATE, &ivt, sizeof(ivt));
+ } else if (matches(*argv, "max_tx_rate") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&tivt.max_tx_rate, *argv, 0))
+ invarg("Invalid \"max tx rate\" value\n",
+ *argv);
+ tivt.vf = vf;
+ flag = 1;
+
+ } else if (matches(*argv, "min_tx_rate") == 0) {
+ NEXT_ARG();
+ if (get_unsigned(&tivt.min_tx_rate, *argv, 0))
+ invarg("Invalid \"min tx rate\" value\n",
+ *argv);
+ tivt.vf = vf;
+ flag = 1;
+
} else if (matches(*argv, "spoofchk") == 0) {
struct ifla_vf_spoofchk ivs;
NEXT_ARG();
@@ -295,6 +333,10 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
}
}
+ if (flag)
+ addattr_l(&req->n, sizeof(*req), IFLA_VF_RATE, &tivt,
+ sizeof(tivt));
+
if (argc == *argcp)
incomplete_command();
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index 94d07fc..4a21e1d 100644
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -124,6 +124,10 @@ ip-link \- network device configuration
.IR VLAN-QOS " ] ] ["
.B rate
.IR TXRATE " ] ["
+.B max_tx_rate
+.IR TXRATE " ] ["
+.B min_tx_rate
+.IR TXRATE " ] ["
.B spoofchk { on | off }
] |
.br
@@ -568,8 +572,24 @@ as 0 disables VLAN tagging and filtering for the VF.
.sp
.BI rate " TXRATE"
-- change the allowed transmit bandwidth, in Mbps, for the specified VF.
-Setting this parameter to 0 disables rate limiting. The
+-- change the allowed transmit bandwidth, in Mbps, for the specified VF.
+Setting this parameter to 0 disables rate limiting.
+This option will be deprecated in future. Please use
+.B "max_tx_rate"
+option instead.
+.B vf
+parameter must be specified.
+
+.sp
+.BI max_tx_rate " TXRATE"
+- change the allowed maximum transmit bandwidth, in Mbps, for the specified VF.
+.B vf
+parameter must be specified.
+
+.sp
+.BI min_tx_rate " TXRATE"
+- change the allowed minimum transmit bandwidth, in Mbps, for the specified VF.
+Minimum TXRATE should be always <= Maximum TXRATE. The
.B vf
parameter must be specified.
--
1.7.1
--
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