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The tbl8 pool will be shared across all VRFs with automatic resizing in a follow-up commit. Per-VRF tbl8 sizing is no longer meaningful. Remove num_tbl8 from: - gr_iface_info_vrf_fib API struct - VRF CLI (fib4-tbl8/fib6-tbl8 options) - fib info API (gr_fib4_info/gr_fib6_info) - fib show table column - prometheus metrics (fib4_max_tbl8, fib4_used_tbl8, etc.) - smoke tests The auto-derived num_tbl8 is still computed internally from max_routes and passed to DPDK at FIB creation time. Signed-off-by: Maxime Leroy <maxime@leroys.fr>
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Replace per-VRF tbl8 allocation with a single shared tbl8 pool for all FIB instances (IPv4 and IPv6). The pool starts small (256 groups) and resizes automatically via RCU-safe pointer swap when full. This eliminates the need to pre-size tbl8 per VRF and reduces overall memory usage by sharing tbl8 groups across VRFs. New DPDK patches: - fib: add shared tbl8 pool for dir24_8 and trie backends - fib: add resizable tbl8 pool New grout module: fib_pool - Creates a global tbl8 pool at init with RCU configured - IPv4 and IPv6 FIBs attach to the same pool via tbl8_pool config - Pool freed at shutdown after all VRFs are destroyed Signed-off-by: Maxime Leroy <maxime@leroys.fr>
Add CLI commands to inspect and manually resize the shared tbl8 pool: grcli fib pool -- show used/total tbl8 groups grcli fib pool resize N -- resize pool to N groups New DPDK patch: - fib: add tbl8 pool stats and resize public API New grout API: - GR_FIB_POOL_STATS_GET - GR_FIB_POOL_RESIZE Signed-off-by: Maxime Leroy <maxime@leroys.fr>
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