net: added support for 40GbE link.
1. removed code replication for tov calculation for 1G, 10G and
made is common for speed > 1G (1G, 10G, 40G, 100G).
2. defines values for #4 different 40G Phys (KR4, LF4, SR4, CR4)
Signed-off-by: Parav Pandit <parav.pandit@emulex.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 297370a..21eff41 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -1153,6 +1153,10 @@
#define SUPPORTED_10000baseR_FEC (1 << 20)
#define SUPPORTED_20000baseMLD2_Full (1 << 21)
#define SUPPORTED_20000baseKR2_Full (1 << 22)
+#define SUPPORTED_40000baseKR4_Full (1 << 23)
+#define SUPPORTED_40000baseCR4_Full (1 << 24)
+#define SUPPORTED_40000baseSR4_Full (1 << 25)
+#define SUPPORTED_40000baseLR4_Full (1 << 26)
/* Indicates what features are advertised by the interface. */
#define ADVERTISED_10baseT_Half (1 << 0)
@@ -1178,6 +1182,10 @@
#define ADVERTISED_10000baseR_FEC (1 << 20)
#define ADVERTISED_20000baseMLD2_Full (1 << 21)
#define ADVERTISED_20000baseKR2_Full (1 << 22)
+#define ADVERTISED_40000baseKR4_Full (1 << 23)
+#define ADVERTISED_40000baseCR4_Full (1 << 24)
+#define ADVERTISED_40000baseSR4_Full (1 << 25)
+#define ADVERTISED_40000baseLR4_Full (1 << 26)
/* The following are all involved in forcing a particular link
* mode for the device for setting things. When getting the
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 8a10d5b..ceaca7c 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -531,6 +531,7 @@
unsigned int mbits = 0, msec = 0, div = 0, tmo = 0;
struct ethtool_cmd ecmd;
int err;
+ u32 speed;
rtnl_lock();
dev = __dev_get_by_index(sock_net(&po->sk), po->ifindex);
@@ -539,25 +540,18 @@
return DEFAULT_PRB_RETIRE_TOV;
}
err = __ethtool_get_settings(dev, &ecmd);
+ speed = ethtool_cmd_speed(&ecmd);
rtnl_unlock();
if (!err) {
- switch (ecmd.speed) {
- case SPEED_10000:
- msec = 1;
- div = 10000/1000;
- break;
- case SPEED_1000:
- msec = 1;
- div = 1000/1000;
- break;
/*
* If the link speed is so slow you don't really
* need to worry about perf anyways
*/
- case SPEED_100:
- case SPEED_10:
- default:
+ if (speed < SPEED_1000 || speed == SPEED_UNKNOWN) {
return DEFAULT_PRB_RETIRE_TOV;
+ } else {
+ msec = 1;
+ div = speed / 1000;
}
}