| Message ID | bf73a78a5074d1c5bcc787e586b7d6dd8dee2d10.1628174048.git.leonro@nvidia.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 5c0418ed16109759c7aec86b72f9bf56a0358526 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net-next] netdevsim: Protect both reload_down and reload_up paths | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 4 of 4 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 63 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
Hello: This patch was applied to netdev/net-next.git (refs/heads/master): On Thu, 5 Aug 2021 17:34:28 +0300 you wrote: > From: Leon Romanovsky <leonro@nvidia.com> > > Don't progress with adding and deleting ports as long as devlink > reload is running. > > Fixes: 23809a726c0d ("netdevsim: Forbid devlink reload when adding or deleting ports") > Signed-off-by: Leon Romanovsky <leonro@nvidia.com> > > [...] Here is the summary with links: - [net-next] netdevsim: Protect both reload_down and reload_up paths https://git.kernel.org/netdev/net-next/c/5c0418ed1610 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
diff --git a/drivers/net/netdevsim/bus.c b/drivers/net/netdevsim/bus.c index a29ec264119d..62d033a1a557 100644 --- a/drivers/net/netdevsim/bus.c +++ b/drivers/net/netdevsim/bus.c @@ -196,6 +196,11 @@ new_port_store(struct device *dev, struct device_attribute *attr, if (!mutex_trylock(&nsim_bus_dev->nsim_bus_reload_lock)) return -EBUSY; + if (nsim_bus_dev->in_reload) { + mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); + return -EBUSY; + } + ret = nsim_dev_port_add(nsim_bus_dev, NSIM_DEV_PORT_TYPE_PF, port_index); mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); return ret ? ret : count; @@ -221,6 +226,11 @@ del_port_store(struct device *dev, struct device_attribute *attr, if (!mutex_trylock(&nsim_bus_dev->nsim_bus_reload_lock)) return -EBUSY; + if (nsim_bus_dev->in_reload) { + mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); + return -EBUSY; + } + ret = nsim_dev_port_del(nsim_bus_dev, NSIM_DEV_PORT_TYPE_PF, port_index); mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); return ret ? ret : count; diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index ff5714209b86..53068e184c90 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -878,6 +878,7 @@ static int nsim_dev_reload_down(struct devlink *devlink, bool netns_change, mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); return -EOPNOTSUPP; } + nsim_bus_dev->in_reload = true; nsim_dev_reload_destroy(nsim_dev); mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); @@ -889,17 +890,26 @@ static int nsim_dev_reload_up(struct devlink *devlink, enum devlink_reload_actio struct netlink_ext_ack *extack) { struct nsim_dev *nsim_dev = devlink_priv(devlink); + struct nsim_bus_dev *nsim_bus_dev; + int ret; + + nsim_bus_dev = nsim_dev->nsim_bus_dev; + mutex_lock(&nsim_bus_dev->nsim_bus_reload_lock); + nsim_bus_dev->in_reload = false; if (nsim_dev->fail_reload) { /* For testing purposes, user set debugfs fail_reload * value to true. Fail right away. */ NL_SET_ERR_MSG_MOD(extack, "User setup the reload to fail for testing purposes"); + mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); return -EINVAL; } *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT); - return nsim_dev_reload_create(nsim_dev, extack); + ret = nsim_dev_reload_create(nsim_dev, extack); + mutex_unlock(&nsim_bus_dev->nsim_bus_reload_lock); + return ret; } static int nsim_dev_info_get(struct devlink *devlink, diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index 1c20bcbd9d91..793c86dc5a9c 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -362,6 +362,7 @@ struct nsim_bus_dev { struct nsim_vf_config *vfconfigs; /* Lock for devlink->reload_enabled in netdevsim module */ struct mutex nsim_bus_reload_lock; + bool in_reload; bool init; };