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authorCyrill Gorcunov <gorcunov@gmail.com>2016-10-21 13:03:44 +0300
committerDavid S. Miller <davem@davemloft.net>2016-10-23 19:35:24 -0400
commit432490f9d455fb842d70219f22d9d2c812371676 (patch)
tree01ab391e2f17661a54596e5258603293178835c2 /include/uapi/linux/inet_diag.h
parentf76a9db351f8beb3259c4ba38058de0058ab8000 (diff)
downloadlinux-stericsson-432490f9d455fb842d70219f22d9d2c812371676.tar.gz
net: ip, diag -- Add diag interface for raw sockets
In criu we are actively using diag interface to collect sockets present in the system when dumping applications. And while for unix, tcp, udp[lite], packet, netlink it works as expected, the raw sockets do not have. Thus add it. v2: - add missing sock_put calls in raw_diag_dump_one (by eric.dumazet@) - implement @destroy for diag requests (by dsa@) v3: - add export of raw_abort for IPv6 (by dsa@) - pass net-admin flag into inet_sk_diag_fill due to changes in net-next branch (by dsa@) v4: - use @pad in struct inet_diag_req_v2 for raw socket protocol specification: raw module carries sockets which may have custom protocol passed from socket() syscall and sole @sdiag_protocol is not enough to match underlied ones - start reporting protocol specifed in socket() call when sockets are raw ones for the same reason: user space tools like ss may parse this attribute and use it for socket matching v5 (by eric.dumazet@): - use sock_hold in raw_sock_get instead of atomic_inc, we're holding (raw_v4_hashinfo|raw_v6_hashinfo)->lock when looking up so counter won't be zero here. v6: - use sdiag_raw_protocol() helper which will access @pad structure used for raw sockets protocol specification: we can't simply rename this member without breaking uapi v7: - sine sdiag_raw_protocol() helper is not suitable for uapi lets rather make an alias structure with proper names. __check_inet_diag_req_raw helper will catch if any of structure unintentionally changed. CC: David S. Miller <davem@davemloft.net> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: David Ahern <dsa@cumulusnetworks.com> CC: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> CC: James Morris <jmorris@namei.org> CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> CC: Patrick McHardy <kaber@trash.net> CC: Andrey Vagin <avagin@openvz.org> CC: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/inet_diag.h')
-rw-r--r--include/uapi/linux/inet_diag.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/uapi/linux/inet_diag.h b/include/uapi/linux/inet_diag.h
index 509cd961068d..bbe201047df6 100644
--- a/include/uapi/linux/inet_diag.h
+++ b/include/uapi/linux/inet_diag.h
@@ -43,6 +43,23 @@ struct inet_diag_req_v2 {
struct inet_diag_sockid id;
};
+/*
+ * SOCK_RAW sockets require the underlied protocol to be
+ * additionally specified so we can use @pad member for
+ * this, but we can't rename it because userspace programs
+ * still may depend on this name. Instead lets use another
+ * structure definition as an alias for struct
+ * @inet_diag_req_v2.
+ */
+struct inet_diag_req_raw {
+ __u8 sdiag_family;
+ __u8 sdiag_protocol;
+ __u8 idiag_ext;
+ __u8 sdiag_raw_protocol;
+ __u32 idiag_states;
+ struct inet_diag_sockid id;
+};
+
enum {
INET_DIAG_REQ_NONE,
INET_DIAG_REQ_BYTECODE,