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Needed for upcoming decoder of ethernet proto which is stored in the
host order and has to be converted to the network order before printing
as an xval constant. This change also adds ability to provide
prefix/suffix in order to enclose the printed value in something that
describes the performed conversion.
* nlattr.h (struct decode_nla_xlat_opts): Add prefix, suffix, and
process_fn fields.
* nlattr.c (decode_nla_xval, decode_nla_flags): Handle process_fn,
prefix, snd uffix parameters.
As of now, it's impossible to introduce a dispatching nlattr decoder
that performs actions based on the type of the message, so let's use
a combination of zero decoder list size and non-zero decoder pointer
for this.
This is going to be used later in IFLA_AF_SPEC decoding.
* nlattr.c (decode_nlattr_with_data): Handle zero size and non-NULL
decoders in a special way.
(decode_nlattr): Add an error message about ignoring of opaque_data
argument when zero size and non-NULL decoders are provided.
* nlattr.h (decode_nlattr): Add a comment about the new special case.
* nlattr.c (decode_nla_xval): New function.
* nlattr.h: Include "xlat.h".
(struct decode_nla_xlat_opts): New type.
(DECL_NLA(xval)): New declaration.
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
* configure.ac (AC_CHECK_TYPES): Check for gnet_stats_basic,
gnet_stats_queue, gnet_stats_rate_est,
and gnet_stats_rate_est64 structures in <linux/gen_stats.h>.
And check for struct tc_sizespec in <linux/pkt_sched.h>.
* nlattr.h (tc_stats): New prototype.
* rtnl_tc.c: Include <linux/gen_stats.h>, <linux/pkt_sched.h>,
"xlat/rtnl_tca_stab_attrs.h" and "xlat/rtnl_tca_stats_attrs.h".
(decode_tc_stats, decode_tc_estimator, decode_gnet_stats_basic,
decode_gnet_stats_rate_est, decode_gnet_stats_queue,
decode_gnet_stats_rate_est64, decode_nla_tc_stats,
decode_tc_sizespec, print_stab_data, decode_tca_stab_data,
decode_tca_stab): New functions.
(tca_stats_nla_decoders, tca_stab_nla_decoders,
tcmsg_nla_decoders): New arrays.
(decode_tcmsg): Use tcmsg_nla_decoders.
* xlat/rtnl_tca_stab_attrs.in: New file.
* xlat/rtnl_tca_stats_attrs.in: Likewise.
The attribute of RTA_TABLE is not just a 32-bit integer, some constants
have well-known symbolic names like RT_TABLE_DEFAULT.
* nlattr.h (decode_nla_rt_class): New prototype.
* rtnl_route.c (decode_nla_rt_class): New function.
(rtmsg_nla_decoders) <RTA_TABLE>: Use it.
* tests/nlattr_rtmsg.c (main): Check RTA_TABLE decoding.
* nlattr.c: Include <netinet/in.h> and <arpa/inet.h>.
(decode_nla_be16): New function.
* nlattr.h (decode_nla_be16): New prototype.
* rtnl_neigh.c (decode_neigh_addr,
decode_nda_cacheinfo): New functions.
(ndmsg_nla_decoders): New array.
(decode_ndmsg): Use it.
* configure.ac (AC_CHECK_FUNCS): Add be64toh.
(AC_CHECK_TYPES): Check for struct fib_rule_uid_range
in <linux/fib_rules.h>.
* nlattr.c: Include <endian.h>.
(decode_nla_be64): New function.
* nlattr.h (decode_nla_be64): New prototype.
* rtnl_rule.c (decode_rule_addr,
decode_fib_rule_uid_range): New functions.
(fib_rule_hdr_nla_decoders): New array.
(decode_fib_rule_hdr): Use it.
In an attempt to improve readability.
* defs.h (DECL_IOCTL, DECL_NETLINK, DECL_PRINTNUM, DECL_PRINTNUM_ADDR,
ATTRIBUTE_FORMAT): Add comment that marks end of macro definition.
* netlink_sock_diag (DECL_NETLINK_DIAG_DECODER): Likewise.
* nlattr.h (DECL_NLA): Likewise.
