* [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race
@ 2013-09-06 22:00 Nikolay Aleksandrov
2013-09-06 22:00 ` [PATCH -net v2 1/2] bonding: fix store_arp_validate race with mode change Nikolay Aleksandrov
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Nikolay Aleksandrov @ 2013-09-06 22:00 UTC (permalink / raw)
To: netdev; +Cc: fubar, andy, davem
Hello all,
These two patches aim to fix the possible de-sync state which the bond
can enter if we have arp_validate without arp_interval or the other way
around. They also fix a race condition between arp_validate setting and
mode changing.
Patch 01 - fixes the race condition between store_arp_validate and bond
mode change by using rtnl for sync
Patch 02 - fixes the possible de-sync state by setting/unsetting recv_probe
if arp_interval is set/unset and also if arp_validate is set/unset
v2: Fix the mode check in store_arp_validate
Best regards,
Nikolay Aleksandrov
Nikolay Aleksandrov (2):
bonding: fix store_arp_validate race with mode change
bonding: fix bond_arp_rcv setting and arp validate desync state
drivers/net/bonding/bond_main.c | 4 ++--
drivers/net/bonding/bond_sysfs.c | 31 +++++++++++++++++++++++++------
drivers/net/bonding/bonding.h | 1 +
3 files changed, 28 insertions(+), 8 deletions(-)
--
1.8.1.4
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH -net v2 1/2] bonding: fix store_arp_validate race with mode change 2013-09-06 22:00 [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race Nikolay Aleksandrov @ 2013-09-06 22:00 ` Nikolay Aleksandrov 2013-09-10 18:15 ` [-net,v2,1/2] " Veaceslav Falico 2013-09-06 22:00 ` [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state Nikolay Aleksandrov 2013-09-11 19:55 ` [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race David Miller 2 siblings, 1 reply; 7+ messages in thread From: Nikolay Aleksandrov @ 2013-09-06 22:00 UTC (permalink / raw) To: netdev; +Cc: fubar, andy, davem We need to protect store_arp_validate via rtnl because it can race with mode changing and we can end up having arp_validate set in a mode different from active-backup. Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> --- v2: no change drivers/net/bonding/bond_sysfs.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index ce46776..4e38683 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -419,27 +419,33 @@ static ssize_t bonding_store_arp_validate(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { - int new_value; + int new_value, ret = count; struct bonding *bond = to_bond(d); + if (!rtnl_trylock()) + return restart_syscall(); new_value = bond_parse_parm(buf, arp_validate_tbl); if (new_value < 0) { pr_err("%s: Ignoring invalid arp_validate value %s\n", bond->dev->name, buf); - return -EINVAL; + ret = -EINVAL; + goto out; } if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { pr_err("%s: arp_validate only supported in active-backup mode.\n", bond->dev->name); - return -EINVAL; + ret = -EINVAL; + goto out; } pr_info("%s: setting arp_validate to %s (%d).\n", bond->dev->name, arp_validate_tbl[new_value].modename, new_value); bond->params.arp_validate = new_value; +out: + rtnl_unlock(); - return count; + return ret; } static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, -- 1.8.1.4 ^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [-net,v2,1/2] bonding: fix store_arp_validate race with mode change 2013-09-06 22:00 ` [PATCH -net v2 1/2] bonding: fix store_arp_validate race with mode change Nikolay Aleksandrov @ 2013-09-10 18:15 ` Veaceslav Falico 0 siblings, 0 replies; 7+ messages in thread From: Veaceslav Falico @ 2013-09-10 18:15 UTC (permalink / raw) To: nikolay; +Cc: netdev, fubar, andy, davem On Sat, Sep 07, 2013 at 12:00:25AM +0200, nikolay@redhat.com wrote: >We need to protect store_arp_validate via rtnl because it can race with >mode changing and we can end up having arp_validate set in a mode >different from active-backup. > >Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Acked-by: Veaceslav Falico <vfalico@redhat.com> > >--- >v2: no change > > drivers/net/bonding/bond_sysfs.c | 14 ++++++++++---- > 1 file changed, 10 insertions(+), 4 deletions(-) > >diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c >index ce46776..4e38683 100644 >--- a/drivers/net/bonding/bond_sysfs.c >+++ b/drivers/net/bonding/bond_sysfs.c >@@ -419,27 +419,33 @@ static ssize_t bonding_store_arp_validate(struct device *d, > struct device_attribute *attr, > const char *buf, size_t count) > { >- int new_value; >+ int new_value, ret = count; > struct bonding *bond = to_bond(d); p.s. If, by any chance, there'll be another v3 - move that struct before ints :). But it's ok as is, anyway. > >+ if (!rtnl_trylock()) >+ return restart_syscall(); > new_value = bond_parse_parm(buf, arp_validate_tbl); > if (new_value < 0) { > pr_err("%s: Ignoring invalid arp_validate value %s\n", > bond->dev->name, buf); >- return -EINVAL; >+ ret = -EINVAL; >+ goto out; > } > if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { > pr_err("%s: arp_validate only supported in active-backup mode.\n", > bond->dev->name); >- return -EINVAL; >+ ret = -EINVAL; >+ goto out; > } > pr_info("%s: setting arp_validate to %s (%d).\n", > bond->dev->name, arp_validate_tbl[new_value].modename, > new_value); > > bond->params.arp_validate = new_value; >+out: >+ rtnl_unlock(); > >- return count; >+ return ret; > } > > static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, ^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state 2013-09-06 22:00 [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race Nikolay Aleksandrov 2013-09-06 22:00 ` [PATCH -net v2 1/2] bonding: fix store_arp_validate race with mode change Nikolay Aleksandrov @ 2013-09-06 22:00 ` Nikolay Aleksandrov 2013-09-10 14:48 ` Marcelo Ricardo Leitner 2013-09-10 18:20 ` [-net, v2, " Veaceslav Falico 2013-09-11 19:55 ` [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race David Miller 2 siblings, 2 replies; 7+ messages in thread From: Nikolay Aleksandrov @ 2013-09-06 22:00 UTC (permalink / raw) To: netdev; +Cc: fubar, andy, davem We make bond_arp_rcv global so it can be used in bond_sysfs if the bond interface is up and arp_interval is being changed to a positive value and cleared otherwise as per Jay's suggestion. This also fixes a problem where bond_arp_rcv was set even though arp_validate was disabled while the bond was up by unsetting recv_probe in bond_store_arp_validate and respectively setting it if enabled. Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> --- v2: fix the mode check in store_arp_validate I've intentionally left the prototype line >80 chars, let me know if I should break it. drivers/net/bonding/bond_main.c | 4 ++-- drivers/net/bonding/bond_sysfs.c | 19 ++++++++++++++++--- drivers/net/bonding/bonding.h | 1 + 3 files changed, 19 insertions(+), 5 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 39e5b1c..72df399 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2404,8 +2404,8 @@ static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 slave->target_last_arp_rx[i] = jiffies; } -static int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, - struct slave *slave) +int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, + struct slave *slave) { struct arphdr *arp = (struct arphdr *)skb->data; unsigned char *arp_ptr; diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 4e38683..eeab40b 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -349,6 +349,8 @@ static ssize_t bonding_store_mode(struct device *d, goto out; } + /* don't cache arp_validate between modes */ + bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; bond->params.mode = new_value; bond_set_mode_ops(bond, bond->params.mode); pr_info("%s: setting mode to %s (%d).\n", @@ -419,8 +421,8 @@ static ssize_t bonding_store_arp_validate(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { - int new_value, ret = count; struct bonding *bond = to_bond(d); + int new_value, ret = count; if (!rtnl_trylock()) return restart_syscall(); @@ -431,7 +433,7 @@ static ssize_t bonding_store_arp_validate(struct device *d, ret = -EINVAL; goto out; } - if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { + if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { pr_err("%s: arp_validate only supported in active-backup mode.\n", bond->dev->name); ret = -EINVAL; @@ -441,6 +443,12 @@ static ssize_t bonding_store_arp_validate(struct device *d, bond->dev->name, arp_validate_tbl[new_value].modename, new_value); + if (bond->dev->flags & IFF_UP) { + if (!new_value) + bond->recv_probe = NULL; + else if (bond->params.arp_interval) + bond->recv_probe = bond_arp_rcv; + } bond->params.arp_validate = new_value; out: rtnl_unlock(); @@ -561,8 +569,8 @@ static ssize_t bonding_store_arp_interval(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { - int new_value, ret = count; struct bonding *bond = to_bond(d); + int new_value, ret = count; if (!rtnl_trylock()) return restart_syscall(); @@ -605,8 +613,13 @@ static ssize_t bonding_store_arp_interval(struct device *d, * is called. */ if (!new_value) { + if (bond->params.arp_validate) + bond->recv_probe = NULL; cancel_delayed_work_sync(&bond->arp_work); } else { + /* arp_validate can be set only in active-backup mode */ + if (bond->params.arp_validate) + bond->recv_probe = bond_arp_rcv; cancel_delayed_work_sync(&bond->mii_work); queue_delayed_work(bond->wq, &bond->arp_work, 0); } diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index f7ab161..7ad8bd5 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -430,6 +430,7 @@ static inline bool slave_can_tx(struct slave *slave) struct bond_net; +int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr); int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); void bond_xmit_slave_id(struct bonding *bond, struct sk_buff *skb, int slave_id); -- 1.8.1.4 ^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state 2013-09-06 22:00 ` [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state Nikolay Aleksandrov @ 2013-09-10 14:48 ` Marcelo Ricardo Leitner 2013-09-10 18:20 ` [-net, v2, " Veaceslav Falico 1 sibling, 0 replies; 7+ messages in thread From: Marcelo Ricardo Leitner @ 2013-09-10 14:48 UTC (permalink / raw) To: Nikolay Aleksandrov; +Cc: netdev, fubar, andy, davem Em 06-09-2013 19:00, Nikolay Aleksandrov escreveu: > We make bond_arp_rcv global so it can be used in bond_sysfs if the bond > interface is up and arp_interval is being changed to a positive value > and cleared otherwise as per Jay's suggestion. > This also fixes a problem where bond_arp_rcv was set even though > arp_validate was disabled while the bond was up by unsetting recv_probe > in bond_store_arp_validate and respectively setting it if enabled. > > Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com> > --- > v2: fix the mode check in store_arp_validate > I've intentionally left the prototype line >80 chars, let me know if I > should break it. > > drivers/net/bonding/bond_main.c | 4 ++-- > drivers/net/bonding/bond_sysfs.c | 19 ++++++++++++++++--- > drivers/net/bonding/bonding.h | 1 + > 3 files changed, 19 insertions(+), 5 deletions(-) > > diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c > index 39e5b1c..72df399 100644 > --- a/drivers/net/bonding/bond_main.c > +++ b/drivers/net/bonding/bond_main.c > @@ -2404,8 +2404,8 @@ static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 > slave->target_last_arp_rx[i] = jiffies; > } > > -static int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, > - struct slave *slave) > +int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, > + struct slave *slave) > { > struct arphdr *arp = (struct arphdr *)skb->data; > unsigned char *arp_ptr; > diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c > index 4e38683..eeab40b 100644 > --- a/drivers/net/bonding/bond_sysfs.c > +++ b/drivers/net/bonding/bond_sysfs.c > @@ -349,6 +349,8 @@ static ssize_t bonding_store_mode(struct device *d, > goto out; > } > > + /* don't cache arp_validate between modes */ > + bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; > bond->params.mode = new_value; > bond_set_mode_ops(bond, bond->params.mode); > pr_info("%s: setting mode to %s (%d).\n", > @@ -419,8 +421,8 @@ static ssize_t bonding_store_arp_validate(struct device *d, > struct device_attribute *attr, > const char *buf, size_t count) > { > - int new_value, ret = count; > struct bonding *bond = to_bond(d); > + int new_value, ret = count; > > if (!rtnl_trylock()) > return restart_syscall(); > @@ -431,7 +433,7 @@ static ssize_t bonding_store_arp_validate(struct device *d, > ret = -EINVAL; > goto out; > } > - if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { > + if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { > pr_err("%s: arp_validate only supported in active-backup mode.\n", > bond->dev->name); > ret = -EINVAL; > @@ -441,6 +443,12 @@ static ssize_t bonding_store_arp_validate(struct device *d, > bond->dev->name, arp_validate_tbl[new_value].modename, > new_value); > > + if (bond->dev->flags & IFF_UP) { > + if (!new_value) > + bond->recv_probe = NULL; > + else if (bond->params.arp_interval) > + bond->recv_probe = bond_arp_rcv; > + } > bond->params.arp_validate = new_value; > out: > rtnl_unlock(); > @@ -561,8 +569,8 @@ static ssize_t bonding_store_arp_interval(struct device *d, > struct device_attribute *attr, > const char *buf, size_t count) > { > - int new_value, ret = count; > struct bonding *bond = to_bond(d); > + int new_value, ret = count; > > if (!rtnl_trylock()) > return restart_syscall(); > @@ -605,8 +613,13 @@ static ssize_t bonding_store_arp_interval(struct device *d, > * is called. > */ > if (!new_value) { > + if (bond->params.arp_validate) > + bond->recv_probe = NULL; > cancel_delayed_work_sync(&bond->arp_work); > } else { > + /* arp_validate can be set only in active-backup mode */ > + if (bond->params.arp_validate) > + bond->recv_probe = bond_arp_rcv; > cancel_delayed_work_sync(&bond->mii_work); > queue_delayed_work(bond->wq, &bond->arp_work, 0); > } > diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h > index f7ab161..7ad8bd5 100644 > --- a/drivers/net/bonding/bonding.h > +++ b/drivers/net/bonding/bonding.h > @@ -430,6 +430,7 @@ static inline bool slave_can_tx(struct slave *slave) > > struct bond_net; > > +int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); > struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr); > int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); > void bond_xmit_slave_id(struct bonding *bond, struct sk_buff *skb, int slave_id); > ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [-net, v2, 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state 2013-09-06 22:00 ` [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state Nikolay Aleksandrov 2013-09-10 14:48 ` Marcelo Ricardo Leitner @ 2013-09-10 18:20 ` Veaceslav Falico 1 sibling, 0 replies; 7+ messages in thread From: Veaceslav Falico @ 2013-09-10 18:20 UTC (permalink / raw) To: nikolay; +Cc: netdev, fubar, andy, davem On Sat, Sep 07, 2013 at 12:00:26AM +0200, nikolay@redhat.com wrote: >We make bond_arp_rcv global so it can be used in bond_sysfs if the bond >interface is up and arp_interval is being changed to a positive value >and cleared otherwise as per Jay's suggestion. >This also fixes a problem where bond_arp_rcv was set even though >arp_validate was disabled while the bond was up by unsetting recv_probe >in bond_store_arp_validate and respectively setting it if enabled. > >Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> >Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com> > >--- >v2: fix the mode check in store_arp_validate >I've intentionally left the prototype line >80 chars, let me know if I >should break it. > > drivers/net/bonding/bond_main.c | 4 ++-- > drivers/net/bonding/bond_sysfs.c | 19 ++++++++++++++++--- > drivers/net/bonding/bonding.h | 1 + > 3 files changed, 19 insertions(+), 5 deletions(-) > >diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c >index 39e5b1c..72df399 100644 >--- a/drivers/net/bonding/bond_main.c >+++ b/drivers/net/bonding/bond_main.c >@@ -2404,8 +2404,8 @@ static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 > slave->target_last_arp_rx[i] = jiffies; > } > >-static int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, >- struct slave *slave) >+int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, >+ struct slave *slave) > { > struct arphdr *arp = (struct arphdr *)skb->data; > unsigned char *arp_ptr; >diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c >index 4e38683..eeab40b 100644 >--- a/drivers/net/bonding/bond_sysfs.c >+++ b/drivers/net/bonding/bond_sysfs.c >@@ -349,6 +349,8 @@ static ssize_t bonding_store_mode(struct device *d, > goto out; > } > >+ /* don't cache arp_validate between modes */ >+ bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; > bond->params.mode = new_value; > bond_set_mode_ops(bond, bond->params.mode); > pr_info("%s: setting mode to %s (%d).\n", >@@ -419,8 +421,8 @@ static ssize_t bonding_store_arp_validate(struct device *d, > struct device_attribute *attr, > const char *buf, size_t count) > { >- int new_value, ret = count; > struct bonding *bond = to_bond(d); >+ int new_value, ret = count; Ah, so you've made it in the second patch, sorry, didn't notice. > > if (!rtnl_trylock()) > return restart_syscall(); >@@ -431,7 +433,7 @@ static ssize_t bonding_store_arp_validate(struct device *d, > ret = -EINVAL; > goto out; > } >- if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { >+ if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) { > pr_err("%s: arp_validate only supported in active-backup mode.\n", > bond->dev->name); > ret = -EINVAL; >@@ -441,6 +443,12 @@ static ssize_t bonding_store_arp_validate(struct device *d, > bond->dev->name, arp_validate_tbl[new_value].modename, > new_value); > >+ if (bond->dev->flags & IFF_UP) { >+ if (!new_value) >+ bond->recv_probe = NULL; >+ else if (bond->params.arp_interval) >+ bond->recv_probe = bond_arp_rcv; >+ } > bond->params.arp_validate = new_value; > out: > rtnl_unlock(); >@@ -561,8 +569,8 @@ static ssize_t bonding_store_arp_interval(struct device *d, > struct device_attribute *attr, > const char *buf, size_t count) > { >- int new_value, ret = count; > struct bonding *bond = to_bond(d); >+ int new_value, ret = count; > > if (!rtnl_trylock()) > return restart_syscall(); >@@ -605,8 +613,13 @@ static ssize_t bonding_store_arp_interval(struct device *d, > * is called. > */ > if (!new_value) { >+ if (bond->params.arp_validate) >+ bond->recv_probe = NULL; > cancel_delayed_work_sync(&bond->arp_work); > } else { >+ /* arp_validate can be set only in active-backup mode */ >+ if (bond->params.arp_validate) >+ bond->recv_probe = bond_arp_rcv; This whole juggling is really annoying, however it's indeed the best way we can fix now. Thanks Nik. Acked-by: Veaceslav Falico <vfalico@redhat.com> > cancel_delayed_work_sync(&bond->mii_work); > queue_delayed_work(bond->wq, &bond->arp_work, 0); > } >diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h >index f7ab161..7ad8bd5 100644 >--- a/drivers/net/bonding/bonding.h >+++ b/drivers/net/bonding/bonding.h >@@ -430,6 +430,7 @@ static inline bool slave_can_tx(struct slave *slave) > > struct bond_net; > >+int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); > struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr); > int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); > void bond_xmit_slave_id(struct bonding *bond, struct sk_buff *skb, int slave_id); ^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race 2013-09-06 22:00 [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race Nikolay Aleksandrov 2013-09-06 22:00 ` [PATCH -net v2 1/2] bonding: fix store_arp_validate race with mode change Nikolay Aleksandrov 2013-09-06 22:00 ` [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state Nikolay Aleksandrov @ 2013-09-11 19:55 ` David Miller 2 siblings, 0 replies; 7+ messages in thread From: David Miller @ 2013-09-11 19:55 UTC (permalink / raw) To: nikolay; +Cc: netdev, fubar, andy From: Nikolay Aleksandrov <nikolay@redhat.com> Date: Sat, 7 Sep 2013 00:00:24 +0200 > Hello all, > These two patches aim to fix the possible de-sync state which the bond > can enter if we have arp_validate without arp_interval or the other way > around. They also fix a race condition between arp_validate setting and > mode changing. > > Patch 01 - fixes the race condition between store_arp_validate and bond > mode change by using rtnl for sync > Patch 02 - fixes the possible de-sync state by setting/unsetting recv_probe > if arp_interval is set/unset and also if arp_validate is set/unset > > v2: Fix the mode check in store_arp_validate Series applied, thank you. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-09-11 19:55 UTC | newest] Thread overview: 7+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2013-09-06 22:00 [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race Nikolay Aleksandrov 2013-09-06 22:00 ` [PATCH -net v2 1/2] bonding: fix store_arp_validate race with mode change Nikolay Aleksandrov 2013-09-10 18:15 ` [-net,v2,1/2] " Veaceslav Falico 2013-09-06 22:00 ` [PATCH -net v2 2/2] bonding: fix bond_arp_rcv setting and arp validate desync state Nikolay Aleksandrov 2013-09-10 14:48 ` Marcelo Ricardo Leitner 2013-09-10 18:20 ` [-net, v2, " Veaceslav Falico 2013-09-11 19:55 ` [PATCH -net v2 0/2] bonding: fix arp_validate desync state & race David Miller
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).