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| author | Xin Long <lucien.xin@gmail.com> | 2019-11-08 08:20:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-09 01:18:32 +0300 |
| commit | d467ac0a38551a5904878b1f5a2fe20a040c0e11 (patch) | |
| tree | bb0bc2ba544e3d50c84421d630643ae35a36e423 /include/uapi/linux/sctp.h | |
| parent | 34515e94c92c3f593cd696abca8609246cbd75e6 (diff) | |
| download | linux-d467ac0a38551a5904878b1f5a2fe20a040c0e11.tar.xz | |
sctp: add SCTP_PEER_ADDR_THLDS_V2 sockopt
Section 7.2 of rfc7829: "Peer Address Thresholds (SCTP_PEER_ADDR_THLDS)
Socket Option" extends 'struct sctp_paddrthlds' with 'spt_pathcpthld'
added to allow a user to change ps_retrans per sock/asoc/transport, as
other 2 paddrthlds: pf_retrans, pathmaxrxt.
Note: to not break the user's program, here to support pf_retrans dump
and setting by adding a new sockopt SCTP_PEER_ADDR_THLDS_V2, and a new
structure sctp_paddrthlds_v2 instead of extending sctp_paddrthlds.
Also, when setting ps_retrans, the value is not allowed to be greater
than pf_retrans.
v1->v2:
- use SCTP_PEER_ADDR_THLDS_V2 to set/get pf_retrans instead,
as Marcelo and David Laight suggested.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/sctp.h')
| -rw-r--r-- | include/uapi/linux/sctp.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h index a190e4a7f546..28ad40d9acba 100644 --- a/include/uapi/linux/sctp.h +++ b/include/uapi/linux/sctp.h @@ -105,6 +105,7 @@ typedef __s32 sctp_assoc_t; #define SCTP_DEFAULT_SNDINFO 34 #define SCTP_AUTH_DEACTIVATE_KEY 35 #define SCTP_REUSE_PORT 36 +#define SCTP_PEER_ADDR_THLDS_V2 37 /* Internal Socket Options. Some of the sctp library functions are * implemented using these socket options. @@ -1087,6 +1088,15 @@ struct sctp_paddrthlds { __u16 spt_pathpfthld; }; +/* Use a new structure with spt_pathcpthld for back compatibility */ +struct sctp_paddrthlds_v2 { + sctp_assoc_t spt_assoc_id; + struct sockaddr_storage spt_address; + __u16 spt_pathmaxrxt; + __u16 spt_pathpfthld; + __u16 spt_pathcpthld; +}; + /* * Socket Option for Getting the Association/Stream-Specific PR-SCTP Status */ |