diff options
Diffstat (limited to 'net/smc/smc_core.c')
| -rw-r--r-- | net/smc/smc_core.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index 0088511e30bf..c7b1c62c2f2e 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -16,6 +16,8 @@ #include <linux/wait.h> #include <linux/reboot.h> #include <linux/mutex.h> +#include <linux/list.h> +#include <linux/smc.h> #include <net/tcp.h> #include <net/sock.h> #include <rdma/ib_verbs.h> @@ -30,6 +32,7 @@ #include "smc_cdc.h" #include "smc_close.h" #include "smc_ism.h" +#include "smc_netlink.h" #define SMC_LGR_NUM_INCR 256 #define SMC_LGR_FREE_DELAY_SERV (600 * HZ) @@ -214,6 +217,63 @@ static void smc_lgr_unregister_conn(struct smc_connection *conn) conn->lgr = NULL; } +int smc_nl_get_sys_info(struct sk_buff *skb, struct netlink_callback *cb) +{ + struct smc_nl_dmp_ctx *cb_ctx = smc_nl_dmp_ctx(cb); + char hostname[SMC_MAX_HOSTNAME_LEN + 1]; + char smc_seid[SMC_MAX_EID_LEN + 1]; + struct smcd_dev *smcd_dev; + struct nlattr *attrs; + u8 *seid = NULL; + u8 *host = NULL; + void *nlh; + + nlh = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, + &smc_gen_nl_family, NLM_F_MULTI, + SMC_NETLINK_GET_SYS_INFO); + if (!nlh) + goto errmsg; + if (cb_ctx->pos[0]) + goto errout; + attrs = nla_nest_start(skb, SMC_GEN_SYS_INFO); + if (!attrs) + goto errout; + if (nla_put_u8(skb, SMC_NLA_SYS_VER, SMC_V2)) + goto errattr; + if (nla_put_u8(skb, SMC_NLA_SYS_REL, SMC_RELEASE)) + goto errattr; + if (nla_put_u8(skb, SMC_NLA_SYS_IS_ISM_V2, smc_ism_is_v2_capable())) + goto errattr; + smc_clc_get_hostname(&host); + if (host) { + snprintf(hostname, sizeof(hostname), "%s", host); + if (nla_put_string(skb, SMC_NLA_SYS_LOCAL_HOST, hostname)) + goto errattr; + } + mutex_lock(&smcd_dev_list.mutex); + smcd_dev = list_first_entry_or_null(&smcd_dev_list.list, + struct smcd_dev, list); + if (smcd_dev) + smc_ism_get_system_eid(smcd_dev, &seid); + mutex_unlock(&smcd_dev_list.mutex); + if (seid && smc_ism_is_v2_capable()) { + snprintf(smc_seid, sizeof(smc_seid), "%s", seid); + if (nla_put_string(skb, SMC_NLA_SYS_SEID, smc_seid)) + goto errattr; + } + nla_nest_end(skb, attrs); + genlmsg_end(skb, nlh); + cb_ctx->pos[0] = 1; + return skb->len; + +errattr: + nla_nest_cancel(skb, attrs); +errout: + genlmsg_cancel(skb, nlh); +errmsg: + return skb->len; +} + void smc_lgr_cleanup_early(struct smc_connection *conn) { struct smc_link_group *lgr = conn->lgr; |