Author: np
Date: Thu Feb 25 01:10:56 2016
New Revision: 296018
URL: https://svnweb.freebsd.org/changeset/base/296018
Log:
cxgbe(4): Add a sysctl to retrieve the maximum speed/bandwidth supported by a
port.
dev.cxgbe.<n>.max_speed
dev.cxl.<n>.max_speed
Sponsored by: Chelsio Communications
Modified:
head/sys/dev/cxgbe/adapter.h
head/sys/dev/cxgbe/t4_main.c
Modified: head/sys/dev/cxgbe/adapter.h
==============================================================================
--- head/sys/dev/cxgbe/adapter.h Thu Feb 25 01:03:34 2016
(r296017)
+++ head/sys/dev/cxgbe/adapter.h Thu Feb 25 01:10:56 2016
(r296018)
@@ -1011,6 +1011,22 @@ is_40G_port(const struct port_info *pi)
}
static inline int
+port_top_speed(const struct port_info *pi)
+{
+
+ if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100G)
+ return (100);
+ if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_40G)
+ return (40);
+ if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_10G)
+ return (10);
+ if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_1G)
+ return (1);
+
+ return (0);
+}
+
+static inline int
tx_resume_threshold(struct sge_eq *eq)
{
Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c Thu Feb 25 01:03:34 2016
(r296017)
+++ head/sys/dev/cxgbe/t4_main.c Thu Feb 25 01:10:56 2016
(r296018)
@@ -5499,6 +5499,9 @@ cxgbe_sysctls(struct port_info *pi)
CTLTYPE_STRING | CTLFLAG_RW, pi, PAUSE_TX, sysctl_pause_settings,
"A", "PAUSE settings (bit 0 = rx_pause, bit 1 = tx_pause)");
+ SYSCTL_ADD_INT(ctx, children, OID_AUTO, "max_speed", CTLFLAG_RD, NULL,
+ port_top_speed(pi), "max speed (in Gbps)");
+
/*
* dev.cxgbe.X.stats.
*/
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