diff options
author | Wen Gu <guwen@linux.alibaba.com> | 2022-07-14 17:44:02 +0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2022-07-18 11:19:17 +0100 |
commit | 4bc5008e4387106215b50ae1a4ac2467455725ca (patch) | |
tree | a4cae8948e6682f0f02f167f7b7d17799f84c025 /net/smc/smc_sysctl.c | |
parent | 0ef69e788411cba2af017db731a9fc62d255e9ac (diff) |
net/smc: Introduce a sysctl for setting SMC-R buffer type
This patch introduces the sysctl smcr_buf_type for setting
the type of SMC-R sndbufs and RMBs.
Valid values includes:
- SMCR_PHYS_CONT_BUFS, which means use physically contiguous
buffers for better performance and is the default value.
- SMCR_VIRT_CONT_BUFS, which means use virtually contiguous
buffers in case of physically contiguous memory is scarce.
- SMCR_MIXED_BUFS, which means first try to use physically
contiguous buffers. If not available, then use virtually
contiguous buffers.
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_sysctl.c')
-rw-r--r-- | net/smc/smc_sysctl.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/smc/smc_sysctl.c b/net/smc/smc_sysctl.c index cf3ab1334c00..0613868fdb97 100644 --- a/net/smc/smc_sysctl.c +++ b/net/smc/smc_sysctl.c @@ -15,6 +15,7 @@ #include <net/net_namespace.h> #include "smc.h" +#include "smc_core.h" #include "smc_sysctl.h" static struct ctl_table smc_table[] = { @@ -25,6 +26,15 @@ static struct ctl_table smc_table[] = { .mode = 0644, .proc_handler = proc_douintvec, }, + { + .procname = "smcr_buf_type", + .data = &init_net.smc.sysctl_smcr_buf_type, + .maxlen = sizeof(unsigned int), + .mode = 0644, + .proc_handler = proc_douintvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_TWO, + }, { } }; @@ -49,6 +59,7 @@ int __net_init smc_sysctl_net_init(struct net *net) goto err_reg; net->smc.sysctl_autocorking_size = SMC_AUTOCORKING_DEFAULT_SIZE; + net->smc.sysctl_smcr_buf_type = SMCR_PHYS_CONT_BUFS; return 0; |