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_llc.c | |
| 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_llc.c')
| -rw-r--r-- | net/smc/smc_llc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index 90f0b60b196a..5347b62f1518 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -52,7 +52,8 @@ struct smc_llc_msg_confirm_link { /* type 0x01 */ u8 link_num; u8 link_uid[SMC_LGR_ID_SIZE]; u8 max_links; - u8 reserved[9]; + u8 max_conns; + u8 reserved[8]; }; #define SMC_LLC_FLAG_ADD_LNK_REJ 0x40 @@ -472,6 +473,9 @@ int smc_llc_send_confirm_link(struct smc_link *link, confllc->link_num = link->link_id; memcpy(confllc->link_uid, link->link_uid, SMC_LGR_ID_SIZE); confllc->max_links = SMC_LLC_ADD_LNK_MAX_LINKS; + if (link->lgr->smc_version == SMC_V2 && + link->lgr->peer_smc_release >= SMC_RELEASE_1) + confllc->max_conns = link->lgr->max_conns; /* send llc message */ rc = smc_wr_tx_send(link, pend); put_out: |