pimd: MLAG flag defintions in the PIM upstream entries

Two flags have been introduced per-upstream entry -
1. XXX_MLAG_VXLAN - This indicates that MLAG DF (designated-forwarded)
election is needed on the entry. In the case of pim-evpn this flag is set
for termination (*, G) entries and will be inherited by the (S, G) entries
that are created as a result of SPT switchover on the G.

2. XXX_MLAG_NON_DF - This is set on entries that have lost the
DF election. Such entries are primarily used for blackholing traffic on
one of the MLAG switches. On a hardware accelerated switch this blackholing
happens in the ASIC preventing (non-needed) traffic hitting the CPU.

Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>

diff --git a/pimd/pim_upstream.h b/pimd/pim_upstream.h
index cd90683de4748acff29215809ef0c32096f1a2b0..13a3dcdf8ca7472c0b26fcc5b742df64ea0e2d06 100644 (file)
--- a/pimd/pim_upstream.h
+++ b/pimd/pim_upstream.h
@@ -64,6 +64,16 @@
  * address
  */
 #define PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM          (1 << 15)
+/* MLAG mroute - synced to the MLAG peer and subject to DF (designated
+ * forwarder) election
+ */
+#define PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN              (1 << 16)
+/* MLAG mroute that lost the DF election with peer and is installed in
+ * a dormant state i.e. MLAG OIFs are removed from the MFC.
+ * In most cases the OIL is empty (but not not always) simply
+ * blackholing the traffic pulled down to the LHR.
+ */
+#define PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF             (1 << 17)
 #define PIM_UPSTREAM_FLAG_ALL 0xFFFFFFFF
 
 #define PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
@@ -83,6 +93,8 @@
 #define PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_ORIG(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG)
 #define PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_TERM(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM)
 #define PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN(flags) ((flags) & (PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG | PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM))
+#define PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN)
+#define PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(flags) ((flags) & PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF)
 
 #define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
 #define PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
@@ -100,6 +112,8 @@
 #define PIM_UPSTREAM_FLAG_SET_FORCE_PIMREG(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG)
 #define PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_ORIG(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG)
 #define PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_TERM(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM)
+#define PIM_UPSTREAM_FLAG_SET_MLAG_VXLAN(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN)
+#define PIM_UPSTREAM_FLAG_SET_MLAG_NON_DF(flags) ((flags) |= PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF)
 
 #define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED)
 #define PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED_UPDATED(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_DR_JOIN_DESIRED_UPDATED)
@@ -117,6 +131,8 @@
 #define PIM_UPSTREAM_FLAG_UNSET_FORCE_PIMREG(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG)
 #define PIM_UPSTREAM_FLAG_UNSET_SRC_VXLAN_ORIG(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG)
 #define PIM_UPSTREAM_FLAG_UNSET_SRC_VXLAN_TERM(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM)
+#define PIM_UPSTREAM_FLAG_UNSET_MLAG_VXLAN(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN)
+#define PIM_UPSTREAM_FLAG_UNSET_MLAG_NON_DF(flags) ((flags) &= ~PIM_UPSTREAM_FLAG_MASK_MLAG_NON_DF)
 
 enum pim_upstream_state {
        PIM_UPSTREAM_NOTJOINED,