diff options
| author | Debabrata Banerjee <dbanerje@akamai.com> | 2018-05-14 21:48:10 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-05-16 19:15:11 +0300 |
| commit | 1386c36b30388f46a95100924bfcae75160db715 (patch) | |
| tree | db9d63a1cb1d8afe910fc0bbf24ad16dd3fdf887 | |
| parent | e79c1055749e3183a2beee04a24da378623329c5 (diff) | |
| download | linux-1386c36b30388f46a95100924bfcae75160db715.tar.xz | |
bonding: allow carrier and link status to determine link state
In a mixed environment it may be difficult to tell if your hardware
support carrier, if it does not it can always report true. With a new
use_carrier option of 2, we can check both carrier and link status
sequentially, instead of one or the other
Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | Documentation/networking/bonding.txt | 4 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 12 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_options.c | 7 |
3 files changed, 14 insertions, 9 deletions
diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt index c13214d073a4..86d07fbb592d 100644 --- a/Documentation/networking/bonding.txt +++ b/Documentation/networking/bonding.txt @@ -828,8 +828,8 @@ use_carrier MII / ETHTOOL ioctl method to determine the link state. A value of 1 enables the use of netif_carrier_ok(), a value of - 0 will use the deprecated MII / ETHTOOL ioctls. The default - value is 1. + 0 will use the deprecated MII / ETHTOOL ioctls. A value of 2 + will check both. The default value is 1. xmit_hash_policy diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index a4cd7f6bfd4d..e4c253dc7dfb 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -132,7 +132,7 @@ MODULE_PARM_DESC(downdelay, "Delay before considering link down, " "in milliseconds"); module_param(use_carrier, int, 0); MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; " - "0 for off, 1 for on (default)"); + "0 for off, 1 for on (default), 2 for carrier then legacy checks"); module_param(mode, charp, 0); MODULE_PARM_DESC(mode, "Mode of operation; 0 for balance-rr, " "1 for active-backup, 2 for balance-xor, " @@ -434,12 +434,16 @@ static int bond_check_dev_link(struct bonding *bond, int (*ioctl)(struct net_device *, struct ifreq *, int); struct ifreq ifr; struct mii_ioctl_data *mii; + bool carrier = true; if (!reporting && !netif_running(slave_dev)) return 0; if (bond->params.use_carrier) - return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; + carrier = netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0; + + if (!carrier) + return carrier; /* Try to get link status using Ethtool first. */ if (slave_dev->ethtool_ops->get_link) @@ -4403,8 +4407,8 @@ static int bond_check_params(struct bond_params *params) downdelay = 0; } - if ((use_carrier != 0) && (use_carrier != 1)) { - pr_warn("Warning: use_carrier module parameter (%d), not of valid value (0/1), so it was set to 1\n", + if (use_carrier < 0 || use_carrier > 2) { + pr_warn("Warning: use_carrier module parameter (%d), not of valid value (0-2), so it was set to 1\n", use_carrier); use_carrier = 1; } diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index 8a945c9341d6..dba6cef05134 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -164,9 +164,10 @@ static const struct bond_opt_value bond_primary_reselect_tbl[] = { }; static const struct bond_opt_value bond_use_carrier_tbl[] = { - { "off", 0, 0}, - { "on", 1, BOND_VALFLAG_DEFAULT}, - { NULL, -1, 0} + { "off", 0, 0}, + { "on", 1, BOND_VALFLAG_DEFAULT}, + { "both", 2, 0}, + { NULL, -1, 0} }; static const struct bond_opt_value bond_all_slaves_active_tbl[] = { |