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authorNeale Ranns <nranns@cisco.com>2018-09-06 06:22:56 -0700
committerJohn Lo <loj@cisco.com>2018-09-07 13:35:58 +0000
commitb54d081873ac975e06be2569a17e6150779e3018 (patch)
treee65062d3e2d3bd941b6cd5b5841eb333e112ef54 /src/vnet/l2/l2_fib.h
parent3b93be5d76cbcb5dc3d3aee5c72a797014a346f9 (diff)
L2-FIB: replace bit-fields with flags
Change-Id: Ic31da442a0e0477569d53b4a72627bbb25e93365 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/l2/l2_fib.h')
-rw-r--r--src/vnet/l2/l2_fib.h86
1 files changed, 68 insertions, 18 deletions
diff --git a/src/vnet/l2/l2_fib.h b/src/vnet/l2/l2_fib.h
index 50fd474087b..a958023eaea 100644
--- a/src/vnet/l2/l2_fib.h
+++ b/src/vnet/l2/l2_fib.h
@@ -102,24 +102,44 @@ typedef struct
};
} l2fib_seq_num_t;
+/**
+ * Flags associated with an L2 Fib Entry
+ * - static mac, no MAC move
+ * - not subject to age
+ * - mac is for a bridged virtual interface
+ * - drop packets to/from this mac
+ * - MAC learned to be sent in L2 MAC event
+ * -MAC learned is a MAC move
+ */
+#define foreach_l2fib_entry_result_attr \
+ _(STATIC, 0, "static") \
+ _(AGE_NOT, 1, "age-not") \
+ _(BVI, 2, "bvi") \
+ _(FILTER, 3, "filter") \
+ _(LRN_EVT, 4, "learn-event") \
+ _(LRN_MOV, 5, "learn-move")
+
+typedef enum l2fib_entry_result_flags_t_
+{
+ L2FIB_ENTRY_RESULT_FLAG_NONE = 0,
+#define _(a,v,s) L2FIB_ENTRY_RESULT_FLAG_##a = (1 << v),
+ foreach_l2fib_entry_result_attr
+#undef _
+} __attribute__ ((packed)) l2fib_entry_result_flags_t;
+
+STATIC_ASSERT_SIZEOF (l2fib_entry_result_flags_t, 1);
+
/*
* The l2fib entry results
*/
-typedef struct
+typedef struct l2fib_entry_result_t_
{
union
{
struct
{
u32 sw_if_index; /* output sw_if_index (L3 intf if bvi==1) */
-
- u8 static_mac:1; /* static mac, no MAC move */
- u8 age_not:1; /* not subject to age */
- u8 bvi:1; /* mac is for a bridged virtual interface */
- u8 filter:1; /* drop packets to/from this mac */
- u8 lrn_evt:1; /* MAC learned to be sent in L2 MAC event */
- u8 lrn_mov:1; /* MAC learned is a MAC move */
- u8 unused:2;
+ l2fib_entry_result_flags_t flags;
u8 timestamp; /* timestamp for aging */
l2fib_seq_num_t sn; /* bd/int seq num */
@@ -130,6 +150,41 @@ typedef struct
STATIC_ASSERT_SIZEOF (l2fib_entry_result_t, 8);
+#define _(a,v,s) \
+ always_inline int \
+ l2fib_entry_result_is_set_##a (const l2fib_entry_result_t *r) { \
+ return (r->fields.flags & L2FIB_ENTRY_RESULT_FLAG_##a); \
+ }
+foreach_l2fib_entry_result_attr
+#undef _
+#define _(a,v,s) \
+ always_inline void \
+ l2fib_entry_result_set_##a (l2fib_entry_result_t *r) { \
+ r->fields.flags |= L2FIB_ENTRY_RESULT_FLAG_##a; \
+ }
+ foreach_l2fib_entry_result_attr
+#undef _
+#define _(a,v,s) \
+ always_inline void \
+ l2fib_entry_result_clear_##a (l2fib_entry_result_t *r) { \
+ r->fields.flags &= ~L2FIB_ENTRY_RESULT_FLAG_##a; \
+ }
+ foreach_l2fib_entry_result_attr
+#undef _
+ static inline void
+l2fib_entry_result_set_bits (l2fib_entry_result_t * r,
+ l2fib_entry_result_flags_t bits)
+{
+ r->fields.flags |= bits;
+}
+
+static inline void
+l2fib_entry_result_clear_bits (l2fib_entry_result_t * r,
+ l2fib_entry_result_flags_t bits)
+{
+ r->fields.flags &= ~bits;
+}
+
/* L2 MAC event entry action enums (see mac_entry definition in l2.api) */
typedef enum
{
@@ -387,19 +442,14 @@ void l2fib_clear_table (void);
void
l2fib_add_entry (u8 * mac,
u32 bd_index,
- u32 sw_if_index, u8 static_mac, u8 drop_mac, u8 bvi_mac);
-
-static inline void
-l2fib_add_fwd_entry (u8 * mac, u32 bd_index, u32 sw_if_index, u8 static_mac,
- u8 bvi_mac)
-{
- l2fib_add_entry (mac, bd_index, sw_if_index, static_mac, 0, bvi_mac);
-}
+ u32 sw_if_index, l2fib_entry_result_flags_t flags);
static inline void
l2fib_add_filter_entry (u8 * mac, u32 bd_index)
{
- l2fib_add_entry (mac, bd_index, ~0, 1, 1, 0);
+ l2fib_add_entry (mac, bd_index, ~0,
+ (L2FIB_ENTRY_RESULT_FLAG_FILTER |
+ L2FIB_ENTRY_RESULT_FLAG_STATIC));
}
u32 l2fib_del_entry (u8 * mac, u32 bd_index, u32 sw_if_index);