This series makes a number of significant reworks to how we process forwarding options (-t, -u, -T and -U) in passt & pasta. This is largely motivated by moving towards being able to share this code with a configuration update tool. However, along the way it also enables some forwarding configurations that were technically possible with the forwarding table but couldn't be specified on the command line, in particular bug 180. There is still a bunch of work needed to make the parsing code truly shareable with pesto, but this is a solid start. v2: * Assorted minor changes based on Stefano's review, including * Explicitly state "guest or namespace" in the manpage * Clearer description of @rulesocks field * Worked around a gcc < 15 bug causing a false positive warning * Update man page and usage() for new capabilities * Additional patches moving rule parsing out of conf.c David Gibson (23): conf: Split parsing of port specifiers from the rest of -[tuTU] parsing conf: Simplify handling of default forwarding mode conf: Move first pass handling of -[TU] next to handling of -[tu] doc: Consolidate -[tu] option descriptions for passt and pasta conf: Permit -[tTuU] all in pasta mode fwd: Better split forwarding rule specification from associated sockets fwd_rule: Move forwarding rule formatting conf: Pass protocol explicitly to conf_ports_range_except() fwd: Split rule building from rule adding fwd_rule: Move rule conflict checking from fwd_rule_add() to caller fwd: Improve error handling in fwd_rule_add() conf: Don't be strict about exclusivity of forwarding mode conf: Rework stepping through chunks of port specifiers conf: Rework checking for garbage after a range doc: Rework man page description of port specifiers conf: Move "all" handling to port specifier conf: Allow user-specified auto-scanned port forwarding ranges conf: Move SO_BINDTODEVICE workaround to conf_ports() conf: Don't pass raw commandline argument to conf_ports_spec() fwd, conf: Add capabilities bits to each forwarding table conf, fwd: Stricter rule checking in fwd_rule_add() fwd_rule: Move ephemeral port probing to fwd_rule.c fwd, conf: Move rule parsing code to fwd_rule.[ch] Makefile | 10 +- conf.c | 524 ++++++----------------------------------- fwd.c | 261 +++------------------ fwd.h | 46 ---- fwd_rule.c | 676 +++++++++++++++++++++++++++++++++++++++++++++++++++++ fwd_rule.h | 59 +++++ passt.1 | 288 ++++++++++------------- 7 files changed, 973 insertions(+), 891 deletions(-) create mode 100644 fwd_rule.c -- 2.53.0