diff options
| author | Petr Machata <petrm@nvidia.com> | 2022-04-22 10:30:50 +0200 |
|---|---|---|
| committer | David Ahern <dsahern@kernel.org> | 2022-04-27 20:12:42 -0600 |
| commit | a463d6b19107373748f6f930170b4c106bee0c42 (patch) | |
| tree | d38406546b4360875bb72e1d96b8ec3a39a76d62 /lib | |
| parent | 38ae12d39632c164835a4b2954344189a58af830 (diff) | |
| download | iproute2-a463d6b19107373748f6f930170b4c106bee0c42.tar.gz | |
libnetlink: Add filtering to rtnl_statsdump_req_filter()
A number of functions in the rtnl_*_req family accept a caller-provided
callback to set up arbitrary filtering. rtnl_statsdump_req_filter()
currently only allows setting a field in the IFSM header, not custom
attributes. So far these were not necessary, but with introduction of more
detailed filtering settings, the callback becomes necessary.
To that end, add a filter_fn and filter_data arguments to the function.
Unlike the other filters, this one is typed to expect an IFSM pointer, to
permit tweaking the header itself as well.
Pass NULLs in the existing callers.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libnetlink.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/lib/libnetlink.c b/lib/libnetlink.c index 6d1b1187..4d33e4dd 100644 --- a/lib/libnetlink.c +++ b/lib/libnetlink.c @@ -619,12 +619,13 @@ int rtnl_fdb_linkdump_req_filter_fn(struct rtnl_handle *rth, return send(rth->fd, &req, sizeof(req), 0); } -int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask) +int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, + __u32 filt_mask, + int (*filter_fn)(struct ipstats_req *req, + void *data), + void *filter_data) { - struct { - struct nlmsghdr nlh; - struct if_stats_msg ifsm; - } req; + struct ipstats_req req; memset(&req, 0, sizeof(req)); req.nlh.nlmsg_len = NLMSG_LENGTH(sizeof(struct if_stats_msg)); @@ -635,6 +636,14 @@ int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask) req.ifsm.family = fam; req.ifsm.filter_mask = filt_mask; + if (filter_fn) { + int err; + + err = filter_fn(&req, filter_data); + if (err) + return err; + } + return send(rth->fd, &req, sizeof(req), 0); } |