Merging upstream branch-2.15 [RH git: a735607890]
after-free.

Merging upstream branch-2.15 [RH git: 729a55e204]
dpif: Trigger revalidation when ipfix config set.
tso: Skip encap tests when userspace TSO is enabled.

Merging upstream branch-2.15 [RH git: 82cbd329f0]

Change RTE_ETH_MAXPORTS to 1024 [RH git: cbe02d895f] (#2048601)

Merging upstream branch-2.15 [RH git: 50c394233c]

Merging upstream branch-2.15 [RH git: 9265101135]
windows: Fix NXM_OF_IP_TOS issue

Merging upstream branch-2.15 [RH git: a01913de4d]
idl: Fix use-after-free when destroying an IDL loop.

Merging upstream branch-2.15 [RH git: 84306060e6]
netdev-dpcls: Make subtable reprobe thread-safe.

Merging upstream branch-2.15 [RH git: 0b62621839]
packet: Ensure packet base is always non-NULL.
idlc: Avoid accessing member within NULL idl index cursors.

Merging upstream branch-2.15 [RH git: e478bef7a4]

Merging upstream branch-2.15 [RH git: 87783c67a6]

Merging upstream branch-2.15 [RH git: ed4cf202b5]
util: Fix tunnel key attr for GTP-U.
idl: Only process successful txn in ovsdb_idl_loop_run.

Merging upstream branch-2.15 [RH git: ffd65899bd]
dpif-upcall: Fix n_revalidators on upcall show.

Merging upstream branch-2.15 [RH git: df7561a258]
idl: ovsdb_idl_loop_destroy must also destroy the committing txn.
cs: Clear last_id on reconnect if condition changes in-flight.
flow: Skip flow reply if it exceeds the maximum message size.
cs: Fix ignoring of the last id from the initial monitor reply. (#2044624)

Merging upstream branch-2.15 [RH git: 0ec5c70e5a]
dpif: Fix issue with non-reversible actions on a patch ports.

downstream: Enable usdt probes in build [RH git: 3e2ddcc2da]