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platform/netlink: extend nl_nlmsghdr_to_str() for genl messages

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Print more details for generic netlink messages.

Also, pass the group that we obtained via NETLINK_PKTINFO.

Also, factor out simple to-string methods.
This commit is contained in:
Thomas Haller
2022-06-22 20:19:06 +02:00
parent 51b707357d
commit 919a61bc53
3 changed files with 94 additions and 83 deletions
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10
src/libnm-platform/nm-linux-platform.c
View File

@@ -7052,7 +7052,7 @@ _rtnl_handle_msg(NMPlatform *platform, const struct nl_msg_lite *msg, gboolean h
obj = nmp_object_new_from_nl(platform, cache, msg, is_del, &parse_nlmsg_iter);
if (!obj) {
_LOGT("event-notification: %s: ignore",
nl_nlmsghdr_to_str(NETLINK_ROUTE, msghdr, buf_nlmsghdr, sizeof(buf_nlmsghdr)));
nl_nlmsghdr_to_str(NETLINK_ROUTE, 0, msghdr, buf_nlmsghdr, sizeof(buf_nlmsghdr)));
return;
}
@@ -7070,7 +7070,7 @@ _rtnl_handle_msg(NMPlatform *platform, const struct nl_msg_lite *msg, gboolean h
}
_LOGT("event-notification: %s%s: %s",
nl_nlmsghdr_to_str(NETLINK_ROUTE, msghdr, buf_nlmsghdr, sizeof(buf_nlmsghdr)),
nl_nlmsghdr_to_str(NETLINK_ROUTE, 0, msghdr, buf_nlmsghdr, sizeof(buf_nlmsghdr)),
is_dump ? ", in-dump" : "",
nmp_object_to_string(obj,
is_del ? NMP_OBJECT_TO_STRING_ID : NMP_OBJECT_TO_STRING_PUBLIC,
@@ -9297,7 +9297,11 @@ continue_reading:
_LOGt("%s: recvmsg: new message %s",
log_prefix,
nl_nlmsghdr_to_str(netlink_protocol, msg.nm_nlh, buf_nlmsghdr, sizeof(buf_nlmsghdr)));
nl_nlmsghdr_to_str(netlink_protocol,
0,
msg.nm_nlh,
buf_nlmsghdr,
sizeof(buf_nlmsghdr)));
if (msg.nm_nlh->nlmsg_flags & NLM_F_MULTI)
multipart = TRUE;

160
src/libnm-platform/nm-netlink.c
View File

@@ -80,10 +80,57 @@ NM_UTILS_FLAGS2STR_DEFINE(nl_nlmsg_flags2str,
NM_UTILS_FLAGS2STR(NLM_F_CREATE, "CREATE"),
NM_UTILS_FLAGS2STR(NLM_F_APPEND, "APPEND"), );
static NM_UTILS_LOOKUP_STR_DEFINE(_rtnl_type_to_str,
guint16,
NM_UTILS_LOOKUP_DEFAULT(NULL),
NM_UTILS_LOOKUP_STR_ITEM(RTM_GETLINK, "RTM_GETLINK"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_NEWLINK, "RTM_NEWLINK"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_DELLINK, "RTM_DELLINK"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_SETLINK, "RTM_SETLINK"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_GETADDR, "RTM_GETADDR"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_NEWADDR, "RTM_NEWADDR"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_DELADDR, "RTM_DELADDR"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_GETROUTE, "RTM_GETROUTE"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_NEWROUTE, "RTM_NEWROUTE"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_DELROUTE, "RTM_DELROUTE"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_GETRULE, "RTM_GETRULE"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_NEWRULE, "RTM_NEWRULE"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_DELRULE, "RTM_DELRULE"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_GETQDISC, "RTM_GETQDISC"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_NEWQDISC, "RTM_NEWQDISC"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_DELQDISC, "RTM_DELQDISC"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_GETTFILTER, "RTM_GETTFILTER"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_NEWTFILTER, "RTM_NEWTFILTER"),
NM_UTILS_LOOKUP_STR_ITEM(RTM_DELTFILTER, "RTM_DELTFILTER"),
NM_UTILS_LOOKUP_STR_ITEM(NLMSG_NOOP, "NLMSG_NOOP"),
NM_UTILS_LOOKUP_STR_ITEM(NLMSG_ERROR, "NLMSG_ERROR"),
NM_UTILS_LOOKUP_STR_ITEM(NLMSG_DONE, "NLMSG_DONE"),
NM_UTILS_LOOKUP_STR_ITEM(NLMSG_OVERRUN, "NLMSG_OVERRUN"), );
static NM_UTILS_LOOKUP_STR_DEFINE(
_genl_ctrl_cmd_to_str,
guint8,
NM_UTILS_LOOKUP_DEFAULT(NULL),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_UNSPEC, "CTRL_CMD_UNSPEC"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_NEWFAMILY, "CTRL_CMD_NEWFAMILY"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_DELFAMILY, "CTRL_CMD_DELFAMILY"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_GETFAMILY, "CTRL_CMD_GETFAMILY"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_NEWOPS, "CTRL_CMD_NEWOPS"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_DELOPS, "CTRL_CMD_DELOPS"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_GETOPS, "CTRL_CMD_GETOPS"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_NEWMCAST_GRP, "CTRL_CMD_NEWMCAST_GRP"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_DELMCAST_GRP, "CTRL_CMD_DELMCAST_GRP"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_GETMCAST_GRP, "CTRL_CMD_GETMCAST_GRP"),
NM_UTILS_LOOKUP_STR_ITEM(CTRL_CMD_GETPOLICY, "CTRL_CMD_GETPOLICY"), );
/*****************************************************************************/
const char *
nl_nlmsghdr_to_str(int netlink_protocol, const struct nlmsghdr *hdr, char *buf, gsize len)
nl_nlmsghdr_to_str(int netlink_protocol,
guint32 pktinfo_group,
const struct nlmsghdr *hdr,
char *buf,
gsize len)
{
const char *b;
const char *s = NULL;
@@ -97,87 +144,44 @@ nl_nlmsghdr_to_str(int netlink_protocol, const struct nlmsghdr *hdr, char *buf,
switch (netlink_protocol) {
case NETLINK_ROUTE:
switch (hdr->nlmsg_type) {
case RTM_GETLINK:
s = "RTM_GETLINK";
break;
case RTM_NEWLINK:
s = "RTM_NEWLINK";
break;
case RTM_DELLINK:
s = "RTM_DELLINK";
break;
case RTM_SETLINK:
s = "RTM_SETLINK";
break;
case RTM_GETADDR:
s = "RTM_GETADDR";
break;
case RTM_NEWADDR:
s = "RTM_NEWADDR";
break;
case RTM_DELADDR:
s = "RTM_DELADDR";
break;
case RTM_GETROUTE:
s = "RTM_GETROUTE";
break;
case RTM_NEWROUTE:
s = "RTM_NEWROUTE";
break;
case RTM_DELROUTE:
s = "RTM_DELROUTE";
break;
case RTM_GETRULE:
s = "RTM_GETRULE";
break;
case RTM_NEWRULE:
s = "RTM_NEWRULE";
break;
case RTM_DELRULE:
s = "RTM_DELRULE";
break;
case RTM_GETQDISC:
s = "RTM_GETQDISC";
break;
case RTM_NEWQDISC:
s = "RTM_NEWQDISC";
break;
case RTM_DELQDISC:
s = "RTM_DELQDISC";
break;
case RTM_GETTFILTER:
s = "RTM_GETTFILTER";
break;
case RTM_NEWTFILTER:
s = "RTM_NEWTFILTER";
break;
case RTM_DELTFILTER:
s = "RTM_DELTFILTER";
break;
case NLMSG_NOOP:
s = "NLMSG_NOOP";
break;
case NLMSG_ERROR:
s = "NLMSG_ERROR";
break;
case NLMSG_DONE:
s = "NLMSG_DONE";
break;
case NLMSG_OVERRUN:
s = "NLMSG_OVERRUN";
break;
s = _rtnl_type_to_str(hdr->nlmsg_type);
if (s)
nm_strbuf_append_str(&buf, &len, s);
else
nm_strbuf_append(&buf, &len, "(%u)", (unsigned) hdr->nlmsg_type);
break;
default:
nm_assert_not_reached();
/* fall-through */
case NETLINK_GENERIC:
if (pktinfo_group == 0)
nm_strbuf_append(&buf, &len, "group:unicast");
else
nm_strbuf_append(&buf, &len, "group:multicast(%u)", (unsigned) pktinfo_group);
s = NULL;
if (hdr->nlmsg_type == GENL_ID_CTRL)
s = "GENL_ID_CTRL";
if (s)
nm_strbuf_append(&buf, &len, ", msg-type:%s", s);
else
nm_strbuf_append(&buf, &len, ", msg-type:(%u)", (unsigned) hdr->nlmsg_type);
if (genlmsg_valid_hdr(hdr, 0)) {
const struct genlmsghdr *ghdr;
ghdr = nlmsg_data(hdr);
s = NULL;
if (hdr->nlmsg_type == GENL_ID_CTRL)
s = _genl_ctrl_cmd_to_str(ghdr->cmd);
if (s)
nm_strbuf_append(&buf, &len, ", cmd:%s", s);
else
nm_strbuf_append(&buf, &len, ", cmd:(%u)", (unsigned) ghdr->cmd);
}
break;
case NETLINK_GENERIC:
break;
}
if (s)
nm_strbuf_append_str(&buf, &len, s);
else
nm_strbuf_append(&buf, &len, "(%u)", (unsigned) hdr->nlmsg_type);
flags = hdr->nlmsg_flags;
if (!flags) {

7
src/libnm-platform/nm-netlink.h
View File

@@ -69,8 +69,11 @@ const char *nl_nlmsgtype2str(int type, char *buf, size_t size);
const char *nl_nlmsg_flags2str(int flags, char *buf, size_t len);
const char *
nl_nlmsghdr_to_str(int netlink_protocol, const struct nlmsghdr *hdr, char *buf, gsize len);
const char *nl_nlmsghdr_to_str(int netlink_protocol,
guint32 pktinfo_group,
const struct nlmsghdr *hdr,
char *buf,
gsize len);
/*****************************************************************************/