Add support for creating HSR/PRP interfaces. HSR (High-availability Seamless
Redundancy) and PRP (Parallel Redundancy Protocol) are two protocols that
provide seamless failover against failure of any single network component. They
are both implemented by the "hsr" kernel driver.
This introduce `LOG_ITEM()` macro that checks format strings in
log_struct() and friends.
Hopefully, this silences false-positive warnings by Coverity.
This introduce LOG_ITEM() macro that checks arbitrary formats in
log_struct().
Then, drop _printf_ attribute from log_struct_internal(), as it does not
help so much, and compiler checked only the first format string.
Hopefully, this silences false-positive warnings by Coverity.
Admittedly, some of our glyphs _are_ special, e.g. "O=" for SPECIAL_GLYPH_TOUCH ;)
But we don't need this in the name. The very long names make some invocations
very wordy, e.g. special_glyph(SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY).
Also, I want to add GLYPH_SPACE, which is not special at all.
This fixes some typos in the documentation, both grammar as well as
incorrect field names.
It also changes the casing of CheckSum to Checksum in L2TP to match
other casings.
This split-out common logic from link_drop_routes() and friends.
This is mostly a refactoring, and not change behavior in most cases.
But slightly change behavior for how foreign nexthops and routing
policy rules are managed.
E.g. when KeepConfiguration=static, previously all foreign nexthops and
routing policy rules were kept, but now only foreign nexthops and rules
with RTPROT_STATIC are kept and others are dropped.
Similary, when KeepConfiguration=dynamic, previously all foreign nexthops
and rules were removed, but now foreign configs with a dynamic protocol
e.g. RTPROT_DHCP are kept, and still configs with RTPROT_STATIC are
dropped.
Currently, we do not set/get/manage protocol for neighbor entries.
Hence, the logic of managing foreign neighbor entries is unchanged.
Without this change, only foreign routes with RTPROT_KERNEL, RTPROT_STATIC,
RTPROT_DHCP, RTPROT_RA, and RTPROT_REDIRECT are kept, and foreign routes with
other protocol e.g. RTPROT_BOOT are removed even if KeepConfiguration=yes.
Fixes a regression in dd6d53a8dc (v257).
Fixes#36411.
Since kernel v4.17 (1b71af6053af1bd2f849e9fda4f71c1e3f145dcf), the
attribute is always set in each netlink message for routing policy rule.
Now, our base line is v5.4. Hence, we can drop the workaround.
- Also configures route to the gateway and prefix route in the specified
table, if necessary.
- Also set preferred source address of the route.
Closes#36168.
Previously, when comparing an existing and requested routing policy
rules, `all` flag was unset, thus the from and to addresses in the two
rules were not compared. Hence, a new request with from and/or to
addresses might be considered as it already exists even the addresses of
existing one were different from the newly requested one.
All existing rules have valid family, i.e. AF_INET or AF_INET6. And,
all requesting rules with from and/or to addresses also have a valid
family. Hence, even `all` flag is unset, the addresses can be and must
be compared in that case.
Fixes a regression caused by fc58350aa4 (v257).
Fixes#35874.
In the kernel, all routing policy rules are not assigned to any interface,
and we can configure them even if the relevant interface is down state.
Fixes a regression caused by 4f8b153d90 (v257).
Fixes#36244.
Yu Watanabe
Beniamino Galvani
Luca Boccassi
Erik Larsson
Matteo Croce
Zbigniew Jędrzejewski-Szmek
Daan De Meyer
Lennart Poettering
Steve Ramage