diff options
| author | Guangguan Wang <guangguan.wang@linux.alibaba.com> | 2023-08-17 21:20:30 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-19 12:46:52 +0100 |
| commit | 7f0620b9940b3b4c5d83a815d46b97ac0b88a595 (patch) | |
| tree | b70e4d4425270bbeff30169717cfc966e3828adf /net/smc/smc_clc.h | |
| parent | 6ac1e6563f5915cd38b6bc6a8b26964b2252f751 (diff) | |
net/smc: support max connections per lgr negotiation
Support max connections per lgr negotiation for SMCR v2.1,
which is one of smc v2.1 features. Server makes decision for
the final value of max conns based on the client preferred
max conns and self-preferred max conns. Here use the minimum
value of client preferred max conns and server preferred max
conns.
Client Server
Proposal(max conns(client preferred))
------------------------------------>
Accept(max conns(accepted value))
accepted value=min(client preferred, server preferred)
<-----------------------------------
Confirm(max conns(accepted value))
----------------------------------->
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Reviewed-by: Jan Karcher <jaka@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_clc.h')
| -rw-r--r-- | net/smc/smc_clc.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h index 552d0656252c..464b93b46047 100644 --- a/net/smc/smc_clc.h +++ b/net/smc/smc_clc.h @@ -46,6 +46,7 @@ #define SMC_CLC_DECL_NOSMCD2DEV 0x03030007 /* no SMC-Dv2 device found */ #define SMC_CLC_DECL_NOUEID 0x03030008 /* peer sent no UEID */ #define SMC_CLC_DECL_RELEASEERR 0x03030009 /* release version negotiate failed */ +#define SMC_CLC_DECL_MAXCONNERR 0x0303000a /* max connections negotiate failed */ #define SMC_CLC_DECL_MODEUNSUPP 0x03040000 /* smc modes do not match (R or D)*/ #define SMC_CLC_DECL_RMBE_EC 0x03050000 /* peer has eyecatcher in RMBE */ #define SMC_CLC_DECL_OPTUNSUPP 0x03060000 /* fastopen sockopt not supported */ @@ -134,7 +135,8 @@ struct smc_clc_smcd_gid_chid { struct smc_clc_v2_extension { struct smc_clnt_opts_area_hdr hdr; u8 roce[16]; /* RoCEv2 GID */ - u8 reserved[16]; + u8 max_conns; + u8 reserved[15]; u8 user_eids[][SMC_MAX_EID_LEN]; }; @@ -236,7 +238,8 @@ struct smc_clc_first_contact_ext { struct smc_clc_first_contact_ext_v2x { struct smc_clc_first_contact_ext fce_v2_base; - u8 reserved3[4]; + u8 max_conns; /* for SMC-R only */ + u8 reserved3[3]; __be32 vendor_exp_options; u8 reserved4[8]; } __packed; /* format defined in |