From 7f0620b9940b3b4c5d83a815d46b97ac0b88a595 Mon Sep 17 00:00:00 2001 From: Guangguan Wang Date: Thu, 17 Aug 2023 21:20:30 +0800 Subject: 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 Reviewed-by: Tony Lu Reviewed-by: Jan Karcher Signed-off-by: David S. Miller --- net/smc/smc_llc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'net/smc/smc_llc.c') 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: -- cgit v1.2.3