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| author | Wojciech Drewek <wojciech.drewek@intel.com> | 2022-03-04 19:40:43 +0300 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2022-03-11 19:27:16 +0300 |
| commit | 9af41cc33471ea1efa6f77e188f055cc77d0a5c5 (patch) | |
| tree | 88df45b05704a95cc221ecb40b7b9bcc6d812624 /include/uapi/linux/if_link.h | |
| parent | b20dc3c684580ddc07eb48ee3c3dc7597cd5eebf (diff) | |
| download | linux-9af41cc33471ea1efa6f77e188f055cc77d0a5c5.tar.xz | |
gtp: Implement GTP echo response
Adding GTP device through ip link creates the situation where
there is no userspace daemon which would handle GTP messages
(Echo Request for example). GTP-U instance which would not respond
to echo requests would violate GTP specification.
When GTP packet arrives with GTP_ECHO_REQ message type,
GTP_ECHO_RSP is send to the sender. GTP_ECHO_RSP message
should contain information element with GTPIE_RECOVERY tag and
restart counter value. For GTPv1 restart counter is not used
and should be equal to 0, for GTPv0 restart counter contains
information provided from userspace(IFLA_GTP_RESTART_COUNT).
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Suggested-by: Harald Welte <laforge@gnumonks.org>
Reviewed-by: Harald Welte <laforge@gnumonks.org>
Tested-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'include/uapi/linux/if_link.h')
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index ebd2aa3ef809..bd24c7dc10a2 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -888,6 +888,7 @@ enum { IFLA_GTP_PDP_HASHSIZE, IFLA_GTP_ROLE, IFLA_GTP_CREATE_SOCKETS, + IFLA_GTP_RESTART_COUNT, __IFLA_GTP_MAX, }; #define IFLA_GTP_MAX (__IFLA_GTP_MAX - 1) |