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authorJon Loeliger <jdl@netgate.com>2020-10-15 14:41:36 -0400
committerDamjan Marion <dmarion@me.com>2020-12-15 15:14:05 +0000
commit5c1e48c01b50ddbd7623228e3dbc94d835d23813 (patch)
treec38d75e9f471b5dbee8968230c5f0bf538f2d53e /src/vnet/classify/vnet_classify.h
parent510aaa8911843206f7b9ff48b41e3c7b8c4a99fe (diff)
classify: add pcap/trace classfier mgmt API calls
Add lookup/get/set API calls to manage both PCAP and Trace filtering Classifier tables. The "lookup" call may be used to identify a Classifier table within a chain of tables taht matches a particular mask vector. For efficiency, this call should be used to determine to which table a match vector should be added. The "get" calls return the first table within a chain (either a PCAP or the Trace) set of tables. The "set" call may be used to add a new table to one such chain. If the "sort_masks" flag is set, the tables within the chain are ordered such that the most-specific mask is first, and the least-specific mask is last. A call that "sets" a chain to ~0 will delete and free all the tables with a chain. The PCAP filters are per-interface, with "local0", (that is, sw_if_index == 0) holding the system-wide PCAP filter. The Classifier used a reference-counted "set" for each PCAP or trace filter that it stored. The ref counts were not used, and the vector of tables was only used temporarily to establish a sorted order for tables based on masks. None of that complexity was actually warranted, and where it was used, the same could be achieved more simply. Type: refactor Signed-off-by: Jon Loeliger <jdl@netgate.com> Change-Id: Icc56116cca91b91c631ca0628e814fb53f3677d2
Diffstat (limited to 'src/vnet/classify/vnet_classify.h')
-rw-r--r--src/vnet/classify/vnet_classify.h24
1 files changed, 13 insertions, 11 deletions
diff --git a/src/vnet/classify/vnet_classify.h b/src/vnet/classify/vnet_classify.h
index f0c81241584..1ce29df5f13 100644
--- a/src/vnet/classify/vnet_classify.h
+++ b/src/vnet/classify/vnet_classify.h
@@ -180,12 +180,6 @@ typedef struct
} vnet_classify_table_t;
-typedef struct
-{
- int refcnt;
- u32 *table_indices;
-} vnet_classify_filter_set_t;
-
struct _vnet_classify_main
{
/* Table pool */
@@ -198,11 +192,8 @@ struct _vnet_classify_main
unformat_function_t **unformat_policer_next_index_fns;
unformat_function_t **unformat_opaque_index_fns;
- /* Pool of filter sets */
- vnet_classify_filter_set_t *filter_sets;
-
- /* Per-interface filter set map. [0] is used for pcap */
- u32 *filter_set_by_sw_if_index;
+ /* Per-interface filter table. [0] is used for pcap */
+ u32 *classify_table_index_by_sw_if_index;
/* convenience variables */
vlib_main_t *vlib_main;
@@ -554,6 +545,17 @@ void vnet_classify_register_unformat_policer_next_index_fn
void vnet_classify_register_unformat_opaque_index_fn (unformat_function_t *
fn);
+u32 classify_get_pcap_chain (vnet_classify_main_t * cm, u32 sw_if_index);
+void classify_set_pcap_chain (vnet_classify_main_t * cm,
+ u32 sw_if_index, u32 table_index);
+
+u32 classify_get_trace_chain (void);
+void classify_set_trace_chain (vnet_classify_main_t * cm, u32 table_index);
+
+u32 classify_sort_table_chain (vnet_classify_main_t * cm, u32 table_index);
+u32 classify_lookup_chain (u32 table_index,
+ u8 * mask, u32 n_skip, u32 n_match);
+
#endif /* __included_vnet_classify_h__ */
/*