[PATCHv1] net: added support for 40GbE link.
From: Parav Pandit <hidden>
Date: 2012-06-27 09:50:54
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 <redacted> --- include/linux/ethtool.h | 8 ++++++++ net/packet/af_packet.c | 18 ++++++------------ 2 files changed, 14 insertions(+), 12 deletions(-)
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 @@ struct ethtool_ops { #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 @@ struct ethtool_ops { #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 @@ static int prb_calc_retire_blk_tmo(struct packet_sock *po, 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 @@ static int prb_calc_retire_blk_tmo(struct packet_sock *po, 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; } }
--
1.6.0.2