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author | Jiri Pirko <jpirko@redhat.com> | 2011-09-03 03:34:30 +0000 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2011-09-15 17:32:26 -0400 |
commit | 4bc71cb983fd2844e603bf633df2bb53385182d2 (patch) | |
tree | 067b6df32fda6c554b2b9263a94a585c2e5a832d /net | |
parent | c5dac7c9984d8a034eb7ae149cedf23ec9259f98 (diff) | |
download | linux-stable-4bc71cb983fd2844e603bf633df2bb53385182d2.tar.gz linux-stable-4bc71cb983fd2844e603bf633df2bb53385182d2.tar.bz2 linux-stable-4bc71cb983fd2844e603bf633df2bb53385182d2.zip |
net: consolidate and fix ethtool_ops->get_settings calling
This patch does several things:
- introduces __ethtool_get_settings which is called from ethtool code and
from drivers as well. Put ASSERT_RTNL there.
- dev_ethtool_get_settings() is replaced by __ethtool_get_settings()
- changes calling in drivers so rtnl locking is respected. In
iboe_get_rate was previously ->get_settings() called unlocked. This
fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same
problem. Also fixed by calling __dev_get_by_index() instead of
dev_get_by_index() and holding rtnl_lock for both calls.
- introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create()
so bnx2fc_if_create() and fcoe_if_create() are called locked as they
are from other places.
- use __ethtool_get_settings() in bonding code
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
v2->v3:
-removed dev_ethtool_get_settings()
-added ASSERT_RTNL into __ethtool_get_settings()
-prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock
around it and __ethtool_get_settings() call
v1->v2:
add missing export_symbol
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> [except FCoE bits]
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r-- | net/8021q/vlan_dev.c | 3 | ||||
-rw-r--r-- | net/bridge/br_if.c | 2 | ||||
-rw-r--r-- | net/core/dev.c | 24 | ||||
-rw-r--r-- | net/core/ethtool.c | 20 | ||||
-rw-r--r-- | net/core/net-sysfs.c | 4 | ||||
-rw-r--r-- | net/packet/af_packet.c | 52 |
6 files changed, 47 insertions, 58 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index eba705b92d6f..c8cf9391417e 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -610,7 +610,8 @@ static int vlan_ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { const struct vlan_dev_info *vlan = vlan_dev_info(dev); - return dev_ethtool_get_settings(vlan->real_dev, cmd); + + return __ethtool_get_settings(vlan->real_dev, cmd); } static void vlan_ethtool_get_drvinfo(struct net_device *dev, diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index b365bba84d19..043a5eb8cafc 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -35,7 +35,7 @@ static int port_cost(struct net_device *dev) { struct ethtool_cmd ecmd; - if (!dev_ethtool_get_settings(dev, &ecmd)) { + if (!__ethtool_get_settings(dev, &ecmd)) { switch (ethtool_cmd_speed(&ecmd)) { case SPEED_10000: return 2; diff --git a/net/core/dev.c b/net/core/dev.c index b2e262ed3963..4b9981caf06f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4566,30 +4566,6 @@ void dev_set_rx_mode(struct net_device *dev) } /** - * dev_ethtool_get_settings - call device's ethtool_ops::get_settings() - * @dev: device - * @cmd: memory area for ethtool_ops::get_settings() result - * - * The cmd arg is initialized properly (cleared and - * ethtool_cmd::cmd field set to ETHTOOL_GSET). - * - * Return device's ethtool_ops::get_settings() result value or - * -EOPNOTSUPP when device doesn't expose - * ethtool_ops::get_settings() operation. - */ -int dev_ethtool_get_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) - return -EOPNOTSUPP; - - memset(cmd, 0, sizeof(struct ethtool_cmd)); - cmd->cmd = ETHTOOL_GSET; - return dev->ethtool_ops->get_settings(dev, cmd); -} -EXPORT_SYMBOL(dev_ethtool_get_settings); - -/** * dev_get_flags - get flags reported to userspace * @dev: device * diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 6cdba5fc2bed..f44481707124 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -569,15 +569,25 @@ int __ethtool_set_flags(struct net_device *dev, u32 data) return 0; } -static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) +int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { - struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET }; - int err; + ASSERT_RTNL(); - if (!dev->ethtool_ops->get_settings) + if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) return -EOPNOTSUPP; - err = dev->ethtool_ops->get_settings(dev, &cmd); + memset(cmd, 0, sizeof(struct ethtool_cmd)); + cmd->cmd = ETHTOOL_GSET; + return dev->ethtool_ops->get_settings(dev, cmd); +} +EXPORT_SYMBOL(__ethtool_get_settings); + +static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) +{ + int err; + struct ethtool_cmd cmd; + + err = __ethtool_get_settings(dev, &cmd); if (err < 0) return err; diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 56e42ab7cbc6..7604a635376b 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -147,7 +147,7 @@ static ssize_t show_speed(struct device *dev, if (netif_running(netdev)) { struct ethtool_cmd cmd; - if (!dev_ethtool_get_settings(netdev, &cmd)) + if (!__ethtool_get_settings(netdev, &cmd)) ret = sprintf(buf, fmt_udec, ethtool_cmd_speed(&cmd)); } rtnl_unlock(); @@ -165,7 +165,7 @@ static ssize_t show_duplex(struct device *dev, if (netif_running(netdev)) { struct ethtool_cmd cmd; - if (!dev_ethtool_get_settings(netdev, &cmd)) + if (!__ethtool_get_settings(netdev, &cmd)) ret = sprintf(buf, "%s\n", cmd.duplex ? "full" : "half"); } diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 2ea3d63e1d4c..25e68f56b4ba 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -530,33 +530,35 @@ static int prb_calc_retire_blk_tmo(struct packet_sock *po, { struct net_device *dev; unsigned int mbits = 0, msec = 0, div = 0, tmo = 0; + struct ethtool_cmd ecmd; + int err; - dev = dev_get_by_index(sock_net(&po->sk), po->ifindex); - if (unlikely(dev == NULL)) + rtnl_lock(); + dev = __dev_get_by_index(sock_net(&po->sk), po->ifindex); + if (unlikely(!dev)) { + rtnl_unlock(); return DEFAULT_PRB_RETIRE_TOV; - - if (dev->ethtool_ops && dev->ethtool_ops->get_settings) { - struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET, }; - - if (!dev->ethtool_ops->get_settings(dev, &ecmd)) { - 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: - return DEFAULT_PRB_RETIRE_TOV; - } + } + err = __ethtool_get_settings(dev, &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: + return DEFAULT_PRB_RETIRE_TOV; } } |