tipc: convert legacy nl socket dump to nl compat
Convert socket (port) listing to compat dumpit call. If a socket
(port) has publications a second dumpit call is issued to collect them
and format then into the legacy buffer before continuing to process
the sockets (ports).
Command converted in this patch:
TIPC_CMD_SHOW_PORTS
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 40c24ea..48e15a4 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -36,6 +36,7 @@
#include "bearer.h"
#include "link.h"
#include "name_table.h"
+#include "socket.h"
#include <net/genetlink.h>
#include <linux/tipc_config.h>
@@ -718,6 +719,109 @@
return 0;
}
+static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
+ struct nlattr **attrs)
+{
+ u32 type, lower, upper;
+ struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
+
+ nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL], NULL);
+
+ type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]);
+ lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]);
+ upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]);
+
+ if (lower == upper)
+ tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
+ else
+ tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
+
+ return 0;
+}
+
+static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
+{
+ int err;
+ void *hdr;
+ struct nlattr *nest;
+ struct sk_buff *args;
+ struct tipc_nl_compat_cmd_dump dump;
+
+ args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!args)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
+ TIPC_NL_PUBL_GET);
+
+ nest = nla_nest_start(args, TIPC_NLA_SOCK);
+ if (!nest) {
+ kfree_skb(args);
+ return -EMSGSIZE;
+ }
+
+ if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
+ kfree_skb(args);
+ return -EMSGSIZE;
+ }
+
+ nla_nest_end(args, nest);
+ genlmsg_end(args, hdr);
+
+ dump.dumpit = tipc_nl_publ_dump;
+ dump.format = __tipc_nl_compat_publ_dump;
+
+ err = __tipc_nl_compat_dumpit(&dump, msg, args);
+
+ kfree_skb(args);
+
+ return err;
+}
+
+static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
+ struct nlattr **attrs)
+{
+ int err;
+ u32 sock_ref;
+ struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
+
+ nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK], NULL);
+
+ sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
+ tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
+
+ if (sock[TIPC_NLA_SOCK_CON]) {
+ u32 node;
+ struct nlattr *con[TIPC_NLA_CON_MAX + 1];
+
+ nla_parse_nested(con, TIPC_NLA_CON_MAX, sock[TIPC_NLA_SOCK_CON],
+ NULL);
+
+ node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
+ tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
+ tipc_zone(node),
+ tipc_cluster(node),
+ tipc_node(node),
+ nla_get_u32(con[TIPC_NLA_CON_SOCK]));
+
+ if (con[TIPC_NLA_CON_FLAG])
+ tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n",
+ nla_get_u32(con[TIPC_NLA_CON_TYPE]),
+ nla_get_u32(con[TIPC_NLA_CON_INST]));
+ else
+ tipc_tlv_sprintf(msg->rep, "\n");
+ } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
+ tipc_tlv_sprintf(msg->rep, " bound to");
+
+ err = tipc_nl_compat_publ_dump(msg, sock_ref);
+ if (err)
+ return err;
+ }
+ tipc_tlv_sprintf(msg->rep, "\n");
+
+ return 0;
+}
+
static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
{
struct tipc_nl_compat_cmd_dump dump;
@@ -775,6 +879,12 @@
dump.dumpit = tipc_nl_name_table_dump;
dump.format = tipc_nl_compat_name_table_dump;
return tipc_nl_compat_dumpit(&dump, msg);
+ case TIPC_CMD_SHOW_PORTS:
+ msg->rep_size = ULTRA_STRING_MAX_LEN;
+ msg->rep_type = TIPC_TLV_ULTRA_STRING;
+ dump.dumpit = tipc_nl_sk_dump;
+ dump.format = tipc_nl_compat_sk_dump;
+ return tipc_nl_compat_dumpit(&dump, msg);
}
return -EOPNOTSUPP;
@@ -881,6 +991,7 @@
case TIPC_CMD_SET_LINK_WINDOW:
case TIPC_CMD_RESET_LINK_STATS:
case TIPC_CMD_SHOW_NAME_TABLE:
+ case TIPC_CMD_SHOW_PORTS:
return tipc_nl_compat_recv(skb, info);
}