drop_monitor: Add a command to query current configuration
Users should be able to query the current configuration of drop monitor before they start using it. Add a command to query the existing configuration which currently consists of alert mode and packet truncation length. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>alistair/sunxi64-5.4-dsi
parent
57986617a7
commit
444be061d0
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@ -54,6 +54,8 @@ enum {
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NET_DM_CMD_START,
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NET_DM_CMD_START,
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NET_DM_CMD_STOP,
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NET_DM_CMD_STOP,
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NET_DM_CMD_PACKET_ALERT,
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NET_DM_CMD_PACKET_ALERT,
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NET_DM_CMD_CONFIG_GET,
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NET_DM_CMD_CONFIG_NEW,
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_NET_DM_CMD_MAX,
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_NET_DM_CMD_MAX,
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};
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};
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@ -676,6 +676,50 @@ static int net_dm_cmd_trace(struct sk_buff *skb,
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return -EOPNOTSUPP;
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return -EOPNOTSUPP;
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}
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}
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static int net_dm_config_fill(struct sk_buff *msg, struct genl_info *info)
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{
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void *hdr;
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hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
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&net_drop_monitor_family, 0, NET_DM_CMD_CONFIG_NEW);
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if (!hdr)
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return -EMSGSIZE;
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if (nla_put_u8(msg, NET_DM_ATTR_ALERT_MODE, net_dm_alert_mode))
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goto nla_put_failure;
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if (nla_put_u32(msg, NET_DM_ATTR_TRUNC_LEN, net_dm_trunc_len))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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return -EMSGSIZE;
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}
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static int net_dm_cmd_config_get(struct sk_buff *skb, struct genl_info *info)
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{
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struct sk_buff *msg;
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int rc;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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rc = net_dm_config_fill(msg, info);
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if (rc)
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goto free_msg;
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return genlmsg_reply(msg, info);
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free_msg:
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nlmsg_free(msg);
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return rc;
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}
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static int dropmon_net_event(struct notifier_block *ev_block,
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static int dropmon_net_event(struct notifier_block *ev_block,
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unsigned long event, void *ptr)
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unsigned long event, void *ptr)
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{
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{
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@ -738,6 +782,10 @@ static const struct genl_ops dropmon_ops[] = {
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.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
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.doit = net_dm_cmd_trace,
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.doit = net_dm_cmd_trace,
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},
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},
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{
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.cmd = NET_DM_CMD_CONFIG_GET,
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.doit = net_dm_cmd_config_get,
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},
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};
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};
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static int net_dm_nl_pre_doit(const struct genl_ops *ops,
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static int net_dm_nl_pre_doit(const struct genl_ops *ops,
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