diff options
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_core.c | 130 | ||||
| -rw-r--r-- | net/smc/smc_core.h | 1 | ||||
| -rw-r--r-- | net/smc/smc_netlink.c | 5 |
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] = { |