diff options
| author | Guangguan Wang <guangguan.wang@linux.alibaba.com> | 2023-11-22 21:52:58 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-11-24 12:13:14 +0000 |
| commit | 1f2c9dd73f0a279214f9b3c382b3f1df272b3253 (patch) | |
| tree | a8db48e07f457ed13bf8a74e4a9743a1acfd0142 /net/smc | |
| parent | f8e80fc4acebab0447567e77d6abc30fb44250cc (diff) | |
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 <guangguan.wang@linux.alibaba.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_clc.c | 5 | ||||
| -rw-r--r-- | net/smc/smc_sysctl.c | 12 | ||||
| -rw-r--r-- | net/smc/smc_sysctl.h | 1 |
3 files changed, 16 insertions, 2 deletions
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; diff --git a/net/smc/smc_sysctl.c b/net/smc/smc_sysctl.c index 3e9bb921e40a..a5946d1b9d60 100644 --- a/net/smc/smc_sysctl.c +++ b/net/smc/smc_sysctl.c @@ -27,6 +27,8 @@ static const int net_smc_wmem_init = (64 * 1024); static const int net_smc_rmem_init = (64 * 1024); static int links_per_lgr_min = SMC_LINKS_ADD_LNK_MIN; static int links_per_lgr_max = SMC_LINKS_ADD_LNK_MAX; +static int conns_per_lgr_min = SMC_CONN_PER_LGR_MIN; +static int conns_per_lgr_max = SMC_CONN_PER_LGR_MAX; static struct ctl_table smc_table[] = { { @@ -79,6 +81,15 @@ static struct ctl_table smc_table[] = { .extra1 = &links_per_lgr_min, .extra2 = &links_per_lgr_max, }, + { + .procname = "smcr_max_conns_per_lgr", + .data = &init_net.smc.sysctl_max_conns_per_lgr, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &conns_per_lgr_min, + .extra2 = &conns_per_lgr_max, + }, { } }; @@ -109,6 +120,7 @@ int __net_init smc_sysctl_net_init(struct net *net) WRITE_ONCE(net->smc.sysctl_wmem, net_smc_wmem_init); WRITE_ONCE(net->smc.sysctl_rmem, net_smc_rmem_init); net->smc.sysctl_max_links_per_lgr = SMC_LINKS_PER_LGR_MAX_PREFER; + net->smc.sysctl_max_conns_per_lgr = SMC_CONN_PER_LGR_PREFER; return 0; diff --git a/net/smc/smc_sysctl.h b/net/smc/smc_sysctl.h index 5783dd7575dd..eb2465ae1e15 100644 --- a/net/smc/smc_sysctl.h +++ b/net/smc/smc_sysctl.h @@ -24,6 +24,7 @@ static inline int smc_sysctl_net_init(struct net *net) { net->smc.sysctl_autocorking_size = SMC_AUTOCORKING_DEFAULT_SIZE; net->smc.sysctl_max_links_per_lgr = SMC_LINKS_PER_LGR_MAX_PREFER; + net->smc.sysctl_max_conns_per_lgr = SMC_CONN_PER_LGR_PREFER; return 0; } |