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[213.179.129.39]) by smtp.gmail.com with ESMTPSA id l1-20020a5d6681000000b0021d6924b777sm8269499wru.115.2022.07.12.07.41.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Jul 2022 07:41:16 -0700 (PDT) From: Jiri Pirko To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, mlxsw@nvidia.com, idosch@nvidia.com, saeedm@nvidia.com, moshe@nvidia.com, tariqt@nvidia.com Subject: [patch net-next RFCv2 2/9] net: devlink: add unlocked variants of devling_trap*() functions Date: Tue, 12 Jul 2022 16:41:05 +0200 Message-Id: <20220712144112.2905407-3-jiri@resnulli.us> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220712144112.2905407-1-jiri@resnulli.us> References: <20220712144112.2905407-1-jiri@resnulli.us> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC From: Jiri Pirko Add unlocked variants of devl_trap*() functions to be used in drivers called-in with devlink->lock held. Signed-off-by: Jiri Pirko --- RFC->RFCv2: - s/ret/err/ - quashed the similar traps policer patch --- include/net/devlink.h | 20 +++++ net/core/devlink.c | 180 ++++++++++++++++++++++++++++++++++-------- 2 files changed, 168 insertions(+), 32 deletions(-) diff --git a/include/net/devlink.h b/include/net/devlink.h index 88c701b375a2..fb1e17d998b6 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -1745,9 +1745,15 @@ void devlink_flash_update_timeout_notify(struct devlink *devlink, const char *component, unsigned long timeout); +int devl_traps_register(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count, void *priv); int devlink_traps_register(struct devlink *devlink, const struct devlink_trap *traps, size_t traps_count, void *priv); +void devl_traps_unregister(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count); void devlink_traps_unregister(struct devlink *devlink, const struct devlink_trap *traps, size_t traps_count); @@ -1755,17 +1761,31 @@ void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb, void *trap_ctx, struct devlink_port *in_devlink_port, const struct flow_action_cookie *fa_cookie); void *devlink_trap_ctx_priv(void *trap_ctx); +int devl_trap_groups_register(struct devlink *devlink, + const struct devlink_trap_group *groups, + size_t groups_count); int devlink_trap_groups_register(struct devlink *devlink, const struct devlink_trap_group *groups, size_t groups_count); +void devl_trap_groups_unregister(struct devlink *devlink, + const struct devlink_trap_group *groups, + size_t groups_count); void devlink_trap_groups_unregister(struct devlink *devlink, const struct devlink_trap_group *groups, size_t groups_count); int +devl_trap_policers_register(struct devlink *devlink, + const struct devlink_trap_policer *policers, + size_t policers_count); +int devlink_trap_policers_register(struct devlink *devlink, const struct devlink_trap_policer *policers, size_t policers_count); void +devl_trap_policers_unregister(struct devlink *devlink, + const struct devlink_trap_policer *policers, + size_t policers_count); +void devlink_trap_policers_unregister(struct devlink *devlink, const struct devlink_trap_policer *policers, size_t policers_count); diff --git a/net/core/devlink.c b/net/core/devlink.c index d2a4e6ee1be6..b0f6e8388880 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -11544,7 +11544,7 @@ static void devlink_trap_disable(struct devlink *devlink, } /** - * devlink_traps_register - Register packet traps with devlink. + * devl_traps_register - Register packet traps with devlink. * @devlink: devlink. * @traps: Packet traps. * @traps_count: Count of provided packet traps. @@ -11552,16 +11552,16 @@ static void devlink_trap_disable(struct devlink *devlink, * * Return: Non-zero value on failure. */ -int devlink_traps_register(struct devlink *devlink, - const struct devlink_trap *traps, - size_t traps_count, void *priv) +int devl_traps_register(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count, void *priv) { int i, err; if (!devlink->ops->trap_init || !devlink->ops->trap_action_set) return -EINVAL; - devl_lock(devlink); + devl_assert_locked(devlink); for (i = 0; i < traps_count; i++) { const struct devlink_trap *trap = &traps[i]; @@ -11573,7 +11573,6 @@ int devlink_traps_register(struct devlink *devlink, if (err) goto err_trap_register; } - devl_unlock(devlink); return 0; @@ -11581,24 +11580,47 @@ int devlink_traps_register(struct devlink *devlink, err_trap_verify: for (i--; i >= 0; i--) devlink_trap_unregister(devlink, &traps[i]); + return err; +} +EXPORT_SYMBOL_GPL(devl_traps_register); + +/** + * devlink_traps_register - Register packet traps with devlink. + * @devlink: devlink. + * @traps: Packet traps. + * @traps_count: Count of provided packet traps. + * @priv: Driver private information. + * + * Context: Takes and release devlink->lock . + * + * Return: Non-zero value on failure. + */ +int devlink_traps_register(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count, void *priv) +{ + int err; + + devl_lock(devlink); + err = devl_traps_register(devlink, traps, traps_count, priv); devl_unlock(devlink); return err; } EXPORT_SYMBOL_GPL(devlink_traps_register); /** - * devlink_traps_unregister - Unregister packet traps from devlink. + * devl_traps_unregister - Unregister packet traps from devlink. * @devlink: devlink. * @traps: Packet traps. * @traps_count: Count of provided packet traps. */ -void devlink_traps_unregister(struct devlink *devlink, - const struct devlink_trap *traps, - size_t traps_count) +void devl_traps_unregister(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count) { int i; - devl_lock(devlink); + devl_assert_locked(devlink); /* Make sure we do not have any packets in-flight while unregistering * traps by disabling all of them and waiting for a grace period. */ @@ -11607,6 +11629,23 @@ void devlink_traps_unregister(struct devlink *devlink, synchronize_rcu(); for (i = traps_count - 1; i >= 0; i--) devlink_trap_unregister(devlink, &traps[i]); +} +EXPORT_SYMBOL_GPL(devl_traps_unregister); + +/** + * devlink_traps_unregister - Unregister packet traps from devlink. + * @devlink: devlink. + * @traps: Packet traps. + * @traps_count: Count of provided packet traps. + * + * Context: Takes and release devlink->lock . + */ +void devlink_traps_unregister(struct devlink *devlink, + const struct devlink_trap *traps, + size_t traps_count) +{ + devl_lock(devlink); + devl_traps_unregister(devlink, traps, traps_count); devl_unlock(devlink); } EXPORT_SYMBOL_GPL(devlink_traps_unregister); @@ -11766,20 +11805,20 @@ devlink_trap_group_unregister(struct devlink *devlink, } /** - * devlink_trap_groups_register - Register packet trap groups with devlink. + * devl_trap_groups_register - Register packet trap groups with devlink. * @devlink: devlink. * @groups: Packet trap groups. * @groups_count: Count of provided packet trap groups. * * Return: Non-zero value on failure. */ -int devlink_trap_groups_register(struct devlink *devlink, - const struct devlink_trap_group *groups, - size_t groups_count) +int devl_trap_groups_register(struct devlink *devlink, + const struct devlink_trap_group *groups, + size_t groups_count) { int i, err; - devl_lock(devlink); + devl_assert_locked(devlink); for (i = 0; i < groups_count; i++) { const struct devlink_trap_group *group = &groups[i]; @@ -11791,7 +11830,6 @@ int devlink_trap_groups_register(struct devlink *devlink, if (err) goto err_trap_group_register; } - devl_unlock(devlink); return 0; @@ -11799,26 +11837,65 @@ int devlink_trap_groups_register(struct devlink *devlink, err_trap_group_verify: for (i--; i >= 0; i--) devlink_trap_group_unregister(devlink, &groups[i]); + return err; +} +EXPORT_SYMBOL_GPL(devl_trap_groups_register); + +/** + * devlink_trap_groups_register - Register packet trap groups with devlink. + * @devlink: devlink. + * @groups: Packet trap groups. + * @groups_count: Count of provided packet trap groups. + * + * Context: Takes and release devlink->lock . + * + * Return: Non-zero value on failure. + */ +int devlink_trap_groups_register(struct devlink *devlink, + const struct devlink_trap_group *groups, + size_t groups_count) +{ + int err; + + devl_lock(devlink); + err = devl_trap_groups_register(devlink, groups, groups_count); devl_unlock(devlink); return err; } EXPORT_SYMBOL_GPL(devlink_trap_groups_register); +/** + * devl_trap_groups_unregister - Unregister packet trap groups from devlink. + * @devlink: devlink. + * @groups: Packet trap groups. + * @groups_count: Count of provided packet trap groups. + */ +void devl_trap_groups_unregister(struct devlink *devlink, + const struct devlink_trap_group *groups, + size_t groups_count) +{ + int i; + + devl_assert_locked(devlink); + for (i = groups_count - 1; i >= 0; i--) + devlink_trap_group_unregister(devlink, &groups[i]); +} +EXPORT_SYMBOL_GPL(devl_trap_groups_unregister); + /** * devlink_trap_groups_unregister - Unregister packet trap groups from devlink. * @devlink: devlink. * @groups: Packet trap groups. * @groups_count: Count of provided packet trap groups. + * + * Context: Takes and release devlink->lock . */ void devlink_trap_groups_unregister(struct devlink *devlink, const struct devlink_trap_group *groups, size_t groups_count) { - int i; - devl_lock(devlink); - for (i = groups_count - 1; i >= 0; i--) - devlink_trap_group_unregister(devlink, &groups[i]); + devl_trap_groups_unregister(devlink, groups, groups_count); devl_unlock(devlink); } EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister); @@ -11905,7 +11982,7 @@ devlink_trap_policer_unregister(struct devlink *devlink, } /** - * devlink_trap_policers_register - Register packet trap policers with devlink. + * devl_trap_policers_register - Register packet trap policers with devlink. * @devlink: devlink. * @policers: Packet trap policers. * @policers_count: Count of provided packet trap policers. @@ -11913,13 +11990,13 @@ devlink_trap_policer_unregister(struct devlink *devlink, * Return: Non-zero value on failure. */ int -devlink_trap_policers_register(struct devlink *devlink, - const struct devlink_trap_policer *policers, - size_t policers_count) +devl_trap_policers_register(struct devlink *devlink, + const struct devlink_trap_policer *policers, + size_t policers_count) { int i, err; - devl_lock(devlink); + devl_assert_locked(devlink); for (i = 0; i < policers_count; i++) { const struct devlink_trap_policer *policer = &policers[i]; @@ -11934,35 +12011,74 @@ devlink_trap_policers_register(struct devlink *devlink, if (err) goto err_trap_policer_register; } - devl_unlock(devlink); - return 0; err_trap_policer_register: err_trap_policer_verify: for (i--; i >= 0; i--) devlink_trap_policer_unregister(devlink, &policers[i]); + return err; +} +EXPORT_SYMBOL_GPL(devl_trap_policers_register); + +/** + * devlink_trap_policers_register - Register packet trap policers with devlink. + * @devlink: devlink. + * @policers: Packet trap policers. + * @policers_count: Count of provided packet trap policers. + * + * Return: Non-zero value on failure. + * + * Context: Takes and release devlink->lock . + */ +int +devlink_trap_policers_register(struct devlink *devlink, + const struct devlink_trap_policer *policers, + size_t policers_count) +{ + int err; + + devl_lock(devlink); + err = devl_trap_policers_register(devlink, policers, policers_count); devl_unlock(devlink); return err; } EXPORT_SYMBOL_GPL(devlink_trap_policers_register); +/** + * devl_trap_policers_unregister - Unregister packet trap policers from devlink. + * @devlink: devlink. + * @policers: Packet trap policers. + * @policers_count: Count of provided packet trap policers. + */ +void +devl_trap_policers_unregister(struct devlink *devlink, + const struct devlink_trap_policer *policers, + size_t policers_count) +{ + int i; + + devl_assert_locked(devlink); + for (i = policers_count - 1; i >= 0; i--) + devlink_trap_policer_unregister(devlink, &policers[i]); +} +EXPORT_SYMBOL_GPL(devl_trap_policers_unregister); + /** * devlink_trap_policers_unregister - Unregister packet trap policers from devlink. * @devlink: devlink. * @policers: Packet trap policers. * @policers_count: Count of provided packet trap policers. + * + * Context: Takes and release devlink->lock . */ void devlink_trap_policers_unregister(struct devlink *devlink, const struct devlink_trap_policer *policers, size_t policers_count) { - int i; - devl_lock(devlink); - for (i = policers_count - 1; i >= 0; i--) - devlink_trap_policer_unregister(devlink, &policers[i]); + devl_trap_policers_unregister(devlink, policers, policers_count); devl_unlock(devlink); } EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);