From 465a38a269e93855393a217fb6a74de1e59767b8 Mon Sep 17 00:00:00 2001 From: Steen Hegelund Date: Wed, 23 Nov 2022 16:25:42 +0100 Subject: net: microchip: sparx5: Support for copying and modifying rules in the API This adds support for making a copy of a rule and modify keys and actions to differentiate the copy. Signed-off-by: Steen Hegelund Signed-off-by: David S. Miller --- drivers/net/ethernet/microchip/vcap/vcap_api.c | 185 ++++++++++++++++++++- .../net/ethernet/microchip/vcap/vcap_api_client.h | 22 ++- .../net/ethernet/microchip/vcap/vcap_api_kunit.c | 6 +- .../net/ethernet/microchip/vcap/vcap_api_private.h | 4 - 4 files changed, 206 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c index ac7a32ff755e..2f171d0b9187 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c @@ -173,6 +173,7 @@ const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl, return NULL; return kset; } +EXPORT_SYMBOL_GPL(vcap_keyfieldset); /* Return the typegroup table for the matching keyset (using subword size) */ const struct vcap_typegroup * @@ -824,8 +825,8 @@ vcap_find_keyset_keyfield(struct vcap_control *vctrl, } /* Match a list of keys against the keysets available in a vcap type */ -static bool vcap_rule_find_keysets(struct vcap_rule_internal *ri, - struct vcap_keyset_list *matches) +static bool _vcap_rule_find_keysets(struct vcap_rule_internal *ri, + struct vcap_keyset_list *matches) { const struct vcap_client_keyfield *ckf; int keyset, found, keycount, map_size; @@ -864,6 +865,16 @@ static bool vcap_rule_find_keysets(struct vcap_rule_internal *ri, return matches->cnt > 0; } +/* Match a list of keys against the keysets available in a vcap type */ +bool vcap_rule_find_keysets(struct vcap_rule *rule, + struct vcap_keyset_list *matches) +{ + struct vcap_rule_internal *ri = to_intrule(rule); + + return _vcap_rule_find_keysets(ri, matches); +} +EXPORT_SYMBOL_GPL(vcap_rule_find_keysets); + /* Validate a rule with respect to available port keys */ int vcap_val_rule(struct vcap_rule *rule, u16 l3_proto) { @@ -888,7 +899,7 @@ int vcap_val_rule(struct vcap_rule *rule, u16 l3_proto) matches.max = ARRAY_SIZE(keysets); if (ri->data.keyset == VCAP_KFS_NO_VALUE) { /* Iterate over rule keyfields and select keysets that fits */ - if (!vcap_rule_find_keysets(ri, &matches)) { + if (!_vcap_rule_find_keysets(ri, &matches)) { ri->data.exterr = VCAP_ERR_NO_KEYSET_MATCH; return -EINVAL; } @@ -1270,6 +1281,19 @@ int vcap_del_rules(struct vcap_control *vctrl, struct vcap_admin *admin) } EXPORT_SYMBOL_GPL(vcap_del_rules); +/* Find a client key field in a rule */ +static struct vcap_client_keyfield * +vcap_find_keyfield(struct vcap_rule *rule, enum vcap_key_field key) +{ + struct vcap_rule_internal *ri = to_intrule(rule); + struct vcap_client_keyfield *ckf; + + list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) + if (ckf->ctrl.key == key) + return ckf; + return NULL; +} + /* Find information on a key field in a rule */ const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule, enum vcap_key_field key) @@ -1434,6 +1458,19 @@ int vcap_rule_add_key_u128(struct vcap_rule *rule, enum vcap_key_field key, } EXPORT_SYMBOL_GPL(vcap_rule_add_key_u128); +/* Find a client action field in a rule */ +static struct vcap_client_actionfield * +vcap_find_actionfield(struct vcap_rule *rule, enum vcap_action_field act) +{ + struct vcap_rule_internal *ri = (struct vcap_rule_internal *)rule; + struct vcap_client_actionfield *caf; + + list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) + if (caf->ctrl.action == act) + return caf; + return NULL; +} + static void vcap_copy_from_client_actionfield(struct vcap_rule *rule, struct vcap_client_actionfield *field, struct vcap_client_actionfield_data *data) @@ -1772,6 +1809,148 @@ int vcap_rule_get_counter(struct vcap_rule *rule, struct vcap_counter *ctr) } EXPORT_SYMBOL_GPL(vcap_rule_get_counter); +static int vcap_rule_mod_key(struct vcap_rule *rule, + enum vcap_key_field key, + enum vcap_field_type ftype, + struct vcap_client_keyfield_data *data) +{ + struct vcap_client_keyfield *field; + + field = vcap_find_keyfield(rule, key); + if (!field) + return vcap_rule_add_key(rule, key, ftype, data); + vcap_copy_from_client_keyfield(rule, field, data); + return 0; +} + +/* Modify a 32 bit key field with value and mask in the rule */ +int vcap_rule_mod_key_u32(struct vcap_rule *rule, enum vcap_key_field key, + u32 value, u32 mask) +{ + struct vcap_client_keyfield_data data; + + data.u32.value = value; + data.u32.mask = mask; + return vcap_rule_mod_key(rule, key, VCAP_FIELD_U32, &data); +} +EXPORT_SYMBOL_GPL(vcap_rule_mod_key_u32); + +static int vcap_rule_mod_action(struct vcap_rule *rule, + enum vcap_action_field action, + enum vcap_field_type ftype, + struct vcap_client_actionfield_data *data) +{ + struct vcap_client_actionfield *field; + + field = vcap_find_actionfield(rule, action); + if (!field) + return vcap_rule_add_action(rule, action, ftype, data); + vcap_copy_from_client_actionfield(rule, field, data); + return 0; +} + +/* Modify a 32 bit action field with value in the rule */ +int vcap_rule_mod_action_u32(struct vcap_rule *rule, + enum vcap_action_field action, + u32 value) +{ + struct vcap_client_actionfield_data data; + + data.u32.value = value; + return vcap_rule_mod_action(rule, action, VCAP_FIELD_U32, &data); +} +EXPORT_SYMBOL_GPL(vcap_rule_mod_action_u32); + +/* Drop keys in a keylist and any keys that are not supported by the keyset */ +int vcap_filter_rule_keys(struct vcap_rule *rule, + enum vcap_key_field keylist[], int length, + bool drop_unsupported) +{ + struct vcap_rule_internal *ri = to_intrule(rule); + struct vcap_client_keyfield *ckf, *next_ckf; + const struct vcap_field *fields; + enum vcap_key_field key; + int err = 0; + int idx; + + if (length > 0) { + err = -EEXIST; + list_for_each_entry_safe(ckf, next_ckf, + &ri->data.keyfields, ctrl.list) { + key = ckf->ctrl.key; + for (idx = 0; idx < length; ++idx) + if (key == keylist[idx]) { + list_del(&ckf->ctrl.list); + kfree(ckf); + idx++; + err = 0; + } + } + } + if (drop_unsupported) { + err = -EEXIST; + fields = vcap_keyfields(ri->vctrl, ri->admin->vtype, + rule->keyset); + if (!fields) + return err; + list_for_each_entry_safe(ckf, next_ckf, + &ri->data.keyfields, ctrl.list) { + key = ckf->ctrl.key; + if (fields[key].width == 0) { + list_del(&ckf->ctrl.list); + kfree(ckf); + err = 0; + } + } + } + return err; +} +EXPORT_SYMBOL_GPL(vcap_filter_rule_keys); + +/* Make a full copy of an existing rule with a new rule id */ +struct vcap_rule *vcap_copy_rule(struct vcap_rule *erule) +{ + struct vcap_rule_internal *ri = to_intrule(erule); + struct vcap_client_actionfield *caf; + struct vcap_client_keyfield *ckf; + struct vcap_rule *rule; + int err; + + err = vcap_api_check(ri->vctrl); + if (err) + return ERR_PTR(err); + + rule = vcap_alloc_rule(ri->vctrl, ri->ndev, ri->data.vcap_chain_id, + ri->data.user, ri->data.priority, 0); + if (IS_ERR(rule)) + return rule; + + list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { + /* Add a key duplicate in the new rule */ + err = vcap_rule_add_key(rule, + ckf->ctrl.key, + ckf->ctrl.type, + &ckf->data); + if (err) + goto err; + } + + list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { + /* Add a action duplicate in the new rule */ + err = vcap_rule_add_action(rule, + caf->ctrl.action, + caf->ctrl.type, + &caf->data); + if (err) + goto err; + } + return rule; +err: + vcap_free_rule(rule); + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(vcap_copy_rule); + #ifdef CONFIG_VCAP_KUNIT_TEST #include "vcap_api_kunit.c" #endif diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h index 654ef8fa6d62..93a0fcb12a81 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h @@ -168,6 +168,8 @@ int vcap_val_rule(struct vcap_rule *rule, u16 l3_proto); int vcap_add_rule(struct vcap_rule *rule); /* Delete rule in a VCAP instance */ int vcap_del_rule(struct vcap_control *vctrl, struct net_device *ndev, u32 id); +/* Make a full copy of an existing rule with a new rule id */ +struct vcap_rule *vcap_copy_rule(struct vcap_rule *rule); /* Update the keyset for the rule */ int vcap_set_rule_set_keyset(struct vcap_rule *rule, @@ -213,7 +215,13 @@ bool vcap_is_next_lookup(struct vcap_control *vctrl, int cur_cid, int next_cid); /* Provide all rules via a callback interface */ int vcap_rule_iter(struct vcap_control *vctrl, int (*callback)(void *, struct vcap_rule *), void *arg); - +/* Match a list of keys against the keysets available in a vcap type */ +bool vcap_rule_find_keysets(struct vcap_rule *rule, + struct vcap_keyset_list *matches); +/* Return the keyset information for the keyset */ +const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl, + enum vcap_type vt, + enum vcap_keyfield_set keyset); /* Copy to host byte order */ void vcap_netbytes_copy(u8 *dst, u8 *src, int count); @@ -226,6 +234,10 @@ int vcap_del_rules(struct vcap_control *vctrl, struct vcap_admin *admin); /* Add a keyset to a keyset list */ bool vcap_keyset_list_add(struct vcap_keyset_list *keysetlist, enum vcap_keyfield_set keyset); +/* Drop keys in a keylist and any keys that are not supported by the keyset */ +int vcap_filter_rule_keys(struct vcap_rule *rule, + enum vcap_key_field keylist[], int length, + bool drop_unsupported); /* map keyset id to a string with the keyset name */ const char *vcap_keyset_name(struct vcap_control *vctrl, @@ -234,4 +246,12 @@ const char *vcap_keyset_name(struct vcap_control *vctrl, const char *vcap_keyfield_name(struct vcap_control *vctrl, enum vcap_key_field key); +/* Modify a 32 bit key field with value and mask in the rule */ +int vcap_rule_mod_key_u32(struct vcap_rule *rule, enum vcap_key_field key, + u32 value, u32 mask); +/* Modify a 32 bit action field with value in the rule */ +int vcap_rule_mod_action_u32(struct vcap_rule *rule, + enum vcap_action_field action, + u32 value); + #endif /* __VCAP_API_CLIENT__ */ diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c b/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c index f48d93f374af..875068e484c9 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_kunit.c @@ -1197,7 +1197,7 @@ static void vcap_api_rule_find_keyset_basic_test(struct kunit *test) for (idx = 0; idx < ARRAY_SIZE(ckf); idx++) list_add_tail(&ckf[idx].ctrl.list, &ri.data.keyfields); - ret = vcap_rule_find_keysets(&ri, &matches); + ret = vcap_rule_find_keysets(&ri.data, &matches); KUNIT_EXPECT_EQ(test, true, ret); KUNIT_EXPECT_EQ(test, 1, matches.cnt); @@ -1244,7 +1244,7 @@ static void vcap_api_rule_find_keyset_failed_test(struct kunit *test) for (idx = 0; idx < ARRAY_SIZE(ckf); idx++) list_add_tail(&ckf[idx].ctrl.list, &ri.data.keyfields); - ret = vcap_rule_find_keysets(&ri, &matches); + ret = vcap_rule_find_keysets(&ri.data, &matches); KUNIT_EXPECT_EQ(test, false, ret); KUNIT_EXPECT_EQ(test, 0, matches.cnt); @@ -1291,7 +1291,7 @@ static void vcap_api_rule_find_keyset_many_test(struct kunit *test) for (idx = 0; idx < ARRAY_SIZE(ckf); idx++) list_add_tail(&ckf[idx].ctrl.list, &ri.data.keyfields); - ret = vcap_rule_find_keysets(&ri, &matches); + ret = vcap_rule_find_keysets(&ri.data, &matches); KUNIT_EXPECT_EQ(test, true, ret); KUNIT_EXPECT_EQ(test, 6, matches.cnt); diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_private.h b/drivers/net/ethernet/microchip/vcap/vcap_api_private.h index 18a9a0cd9606..9ac1b1d55f22 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_private.h +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_private.h @@ -59,10 +59,6 @@ void vcap_iter_update(struct vcap_stream_iter *itr); /* Keyset and keyfield functionality */ -/* Return the keyset information for the keyset */ -const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl, - enum vcap_type vt, - enum vcap_keyfield_set keyset); /* Return the number of keyfields in the keyset */ int vcap_keyfield_count(struct vcap_control *vctrl, enum vcap_type vt, enum vcap_keyfield_set keyset); 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