From 1f2c9dd73f0a279214f9b3c382b3f1df272b3253 Mon Sep 17 00:00:00 2001 From: Guangguan Wang Date: Wed, 22 Nov 2023 21:52:58 +0800 Subject: net/smc: add sysctl for max conns per lgr for SMC-R v2.1 Add a new sysctl: net.smc.smcr_max_conns_per_lgr, which is used to control the preferred max connections per lgr for SMC-R v2.1. The default value of this sysctl is 255, and the acceptable value ranges from 16 to 255. Signed-off-by: Guangguan Wang Reviewed-by: Dust Li Signed-off-by: David S. Miller --- net/smc/smc_clc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'net/smc/smc_clc.c') diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c index 1f87c8895a27..0fda5156eef0 100644 --- a/net/smc/smc_clc.c +++ b/net/smc/smc_clc.c @@ -944,7 +944,7 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini) } if (smcr_indicated(ini->smc_type_v2)) { memcpy(v2_ext->roce, ini->smcrv2.ib_gid_v2, SMC_GID_SIZE); - v2_ext->max_conns = SMC_CONN_PER_LGR_PREFER; + v2_ext->max_conns = net->smc.sysctl_max_conns_per_lgr; v2_ext->max_links = net->smc.sysctl_max_links_per_lgr; } @@ -1191,7 +1191,8 @@ int smc_clc_srv_v2x_features_validate(struct smc_sock *smc, return SMC_CLC_DECL_NOV2EXT; if (ini->smcr_version & SMC_V2) { - ini->max_conns = min_t(u8, pclc_v2_ext->max_conns, SMC_CONN_PER_LGR_PREFER); + ini->max_conns = min_t(u8, pclc_v2_ext->max_conns, + net->smc.sysctl_max_conns_per_lgr); if (ini->max_conns < SMC_CONN_PER_LGR_MIN) return SMC_CLC_DECL_MAXCONNERR; -- cgit v1.2.3