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-rw-r--r--net/smc/smc_core.c130
-rw-r--r--net/smc/smc_core.h1
-rw-r--r--net/smc/smc_netlink.c5
3 files changed, 136 insertions, 0 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 5ad4b742dcc1..ac2cc593f25f 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -426,6 +426,130 @@ errout:
cb_ctx->pos[0] = num;
}
+static int smc_nl_fill_smcd_lgr(struct smc_link_group *lgr,
+ struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ char smc_host[SMC_MAX_HOSTNAME_LEN + 1];
+ char smc_pnet[SMC_MAX_PNETID_LEN + 1];
+ char smc_eid[SMC_MAX_EID_LEN + 1];
+ struct nlattr *v2_attrs;
+ struct nlattr *attrs;
+ 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_LGR_SMCD);
+ if (!nlh)
+ goto errmsg;
+
+ attrs = nla_nest_start(skb, SMC_GEN_LGR_SMCD);
+ if (!attrs)
+ goto errout;
+
+ if (nla_put_u32(skb, SMC_NLA_LGR_D_ID, *((u32 *)&lgr->id)))
+ goto errattr;
+ if (nla_put_u64_64bit(skb, SMC_NLA_LGR_D_GID, lgr->smcd->local_gid,
+ SMC_NLA_LGR_D_PAD))
+ goto errattr;
+ if (nla_put_u64_64bit(skb, SMC_NLA_LGR_D_PEER_GID, lgr->peer_gid,
+ SMC_NLA_LGR_D_PAD))
+ goto errattr;
+ if (nla_put_u8(skb, SMC_NLA_LGR_D_VLAN_ID, lgr->vlan_id))
+ goto errattr;
+ if (nla_put_u32(skb, SMC_NLA_LGR_D_CONNS_NUM, lgr->conns_num))
+ goto errattr;
+ if (nla_put_u32(skb, SMC_NLA_LGR_D_CHID, smc_ism_get_chid(lgr->smcd)))
+ goto errattr;
+ snprintf(smc_pnet, sizeof(smc_pnet), "%s", lgr->smcd->pnetid);
+ if (nla_put_string(skb, SMC_NLA_LGR_D_PNETID, smc_pnet))
+ goto errattr;
+
+ v2_attrs = nla_nest_start(skb, SMC_NLA_LGR_V2);
+ if (!v2_attrs)
+ goto errattr;
+ if (nla_put_u8(skb, SMC_NLA_LGR_V2_VER, lgr->smc_version))
+ goto errv2attr;
+ if (nla_put_u8(skb, SMC_NLA_LGR_V2_REL, lgr->peer_smc_release))
+ goto errv2attr;
+ if (nla_put_u8(skb, SMC_NLA_LGR_V2_OS, lgr->peer_os))
+ goto errv2attr;
+ snprintf(smc_host, sizeof(smc_host), "%s", lgr->peer_hostname);
+ if (nla_put_string(skb, SMC_NLA_LGR_V2_PEER_HOST, smc_host))
+ goto errv2attr;
+ snprintf(smc_eid, sizeof(smc_eid), "%s", lgr->negotiated_eid);
+ if (nla_put_string(skb, SMC_NLA_LGR_V2_NEG_EID, smc_eid))
+ goto errv2attr;
+
+ nla_nest_end(skb, v2_attrs);
+ nla_nest_end(skb, attrs);
+ genlmsg_end(skb, nlh);
+ return 0;
+
+errv2attr:
+ nla_nest_cancel(skb, v2_attrs);
+errattr:
+ nla_nest_cancel(skb, attrs);
+errout:
+ genlmsg_cancel(skb, nlh);
+errmsg:
+ return -EMSGSIZE;
+}
+
+static int smc_nl_handle_smcd_lgr(struct smcd_dev *dev,
+ struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct smc_nl_dmp_ctx *cb_ctx = smc_nl_dmp_ctx(cb);
+ struct smc_link_group *lgr;
+ int snum = cb_ctx->pos[1];
+ int rc = 0, num = 0;
+
+ spin_lock_bh(&dev->lgr_lock);
+ list_for_each_entry(lgr, &dev->lgr_list, list) {
+ if (!lgr->is_smcd)
+ continue;
+ if (num < snum)
+ goto next;
+ rc = smc_nl_fill_smcd_lgr(lgr, skb, cb);
+ if (rc)
+ goto errout;
+next:
+ num++;
+ }
+errout:
+ spin_unlock_bh(&dev->lgr_lock);
+ cb_ctx->pos[1] = num;
+ return rc;
+}
+
+static int smc_nl_fill_smcd_dev(struct smcd_dev_list *dev_list,
+ struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct smc_nl_dmp_ctx *cb_ctx = smc_nl_dmp_ctx(cb);
+ struct smcd_dev *smcd_dev;
+ int snum = cb_ctx->pos[0];
+ int rc = 0, num = 0;
+
+ mutex_lock(&dev_list->mutex);
+ list_for_each_entry(smcd_dev, &dev_list->list, list) {
+ if (list_empty(&smcd_dev->lgr_list))
+ continue;
+ if (num < snum)
+ goto next;
+ rc = smc_nl_handle_smcd_lgr(smcd_dev, skb, cb);
+ if (rc)
+ goto errout;
+next:
+ num++;
+ }
+errout:
+ mutex_unlock(&dev_list->mutex);
+ cb_ctx->pos[0] = num;
+ return rc;
+}
+
int smcr_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb)
{
bool list_links = false;
@@ -442,6 +566,12 @@ int smcr_nl_get_link(struct sk_buff *skb, struct netlink_callback *cb)
return skb->len;
}
+int smcd_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ smc_nl_fill_smcd_dev(&smcd_dev_list, skb, cb);
+ return skb->len;
+}
+
void smc_lgr_cleanup_early(struct smc_connection *conn)
{
struct smc_link_group *lgr = conn->lgr;
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index 7995621f318d..0b6899a7f634 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -430,6 +430,7 @@ void smcr_link_down_cond_sched(struct smc_link *lnk);
int smc_nl_get_sys_info(struct sk_buff *skb, struct netlink_callback *cb);
int smcr_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb);
int smcr_nl_get_link(struct sk_buff *skb, struct netlink_callback *cb);
+int smcd_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb);
static inline struct smc_link_group *smc_get_lgr(struct smc_link *link)
{
diff --git a/net/smc/smc_netlink.c b/net/smc/smc_netlink.c
index a41f78f488a2..95bce936534f 100644
--- a/net/smc/smc_netlink.c
+++ b/net/smc/smc_netlink.c
@@ -38,6 +38,11 @@ static const struct genl_ops smc_gen_nl_ops[] = {
/* can be retrieved by unprivileged users */
.dumpit = smcr_nl_get_link,
},
+ {
+ .cmd = SMC_NETLINK_GET_LGR_SMCD,
+ /* can be retrieved by unprivileged users */
+ .dumpit = smcd_nl_get_lgr,
+ },
};
static const struct nla_policy smc_gen_nl_policy[2] = {