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Date: Thu, 30 Oct 2014 17:33:36 +0200
From: Vadim Kochan <vadim4j@...il.com>
To: netdev@...r.kernel.org
Cc: Vadim Kochan <vadim4j@...il.com>
Subject: [PATCH iproute2] ss: Identify more netlink protocol names
There were only few Netlink protocol names
which were printed on the screen:
rtnl, fw, tcpdiag
So added the ability to identify Netlink proto name
from /etc/iproute/nl_protos or from static table.
Signed-off-by: Vadim Kochan <vadim4j@...il.com>
---
etc/iproute2/nl_protos | 23 ++++++++++++++
include/rt_names.h | 2 ++
lib/rt_names.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++
misc/ss.c | 17 ++++++-----
4 files changed, 116 insertions(+), 8 deletions(-)
create mode 100644 etc/iproute2/nl_protos
diff --git a/etc/iproute2/nl_protos b/etc/iproute2/nl_protos
new file mode 100644
index 0000000..43418f3
--- /dev/null
+++ b/etc/iproute2/nl_protos
@@ -0,0 +1,23 @@
+# Netlink protocol names mapping
+
+0 rtnl
+1 unused
+2 usersock
+3 fw
+4 tcpdiag
+5 nflog
+6 xfrm
+7 selinux
+8 iscsi
+9 audit
+10 fiblookup
+11 connector
+12 nft
+13 ip6fw
+14 dec-rt
+15 uevent
+16 genl
+18 scsi-trans
+19 ecryptfs
+20 rdma
+21 crypto
diff --git a/include/rt_names.h b/include/rt_names.h
index 56b649a..c0ea4f9 100644
--- a/include/rt_names.h
+++ b/include/rt_names.h
@@ -29,5 +29,7 @@ int ll_addr_a2n(char *lladdr, int len, const char *arg);
const char * ll_proto_n2a(unsigned short id, char *buf, int len);
int ll_proto_a2n(unsigned short *id, const char *buf);
+const char *nl_proto_n2a(int id, char *buf, int len);
+int nl_proto_a2n(__u32 *id, const char *arg);
#endif
diff --git a/lib/rt_names.c b/lib/rt_names.c
index 911e4d2..184f590 100644
--- a/lib/rt_names.c
+++ b/lib/rt_names.c
@@ -525,3 +525,85 @@ const char *rtnl_group_n2a(int id, char *buf, int len)
snprintf(buf, len, "%d", id);
return buf;
}
+
+static char *nl_proto_tab[256] = {
+ [NETLINK_ROUTE] = "rtnl",
+ [NETLINK_UNUSED] = "unused",
+ [NETLINK_USERSOCK] = "usersock",
+ [NETLINK_FIREWALL] = "fw",
+ [NETLINK_SOCK_DIAG] = "tcpdiag",
+ [NETLINK_NFLOG] = "nflog",
+ [NETLINK_XFRM] = "xfrm",
+ [NETLINK_SELINUX] = "selinux",
+ [NETLINK_ISCSI] = "iscsi",
+ [NETLINK_AUDIT] = "audit",
+ [NETLINK_FIB_LOOKUP] = "fiblookup",
+ [NETLINK_CONNECTOR] = "connector",
+ [NETLINK_NETFILTER] = "nft",
+ [NETLINK_IP6_FW] = "ip6fw",
+ [NETLINK_DNRTMSG] = "dec-rt",
+ [NETLINK_KOBJECT_UEVENT] = "uevent",
+ [NETLINK_GENERIC] = "genl",
+ [NETLINK_SCSITRANSPORT] = "scsi-trans",
+ [NETLINK_ECRYPTFS] = "ecryptfs",
+ [NETLINK_RDMA] = "rdma",
+ [NETLINK_CRYPTO] = "crypto",
+};
+
+static int nl_proto_init;
+
+static void nl_proto_initialize(void)
+{
+ nl_proto_init = 1;
+ rtnl_tab_initialize(CONFDIR "/nl_protos",
+ nl_proto_tab, 256);
+}
+
+const char *nl_proto_n2a(int id, char *buf, int len)
+{
+ if (id < 0 || id >= 256) {
+ snprintf(buf, len, "%u", id);
+ return buf;
+ }
+
+ if (!nl_proto_init)
+ nl_proto_initialize();
+
+ if (nl_proto_tab[id])
+ return nl_proto_tab[id];
+
+ snprintf(buf, len, "%u", id);
+ return buf;
+}
+
+int nl_proto_a2n(__u32 *id, const char *arg)
+{
+ static char *cache = NULL;
+ static unsigned long res;
+ char *end;
+ int i;
+
+ if (cache && strcmp(cache, arg) == 0) {
+ *id = res;
+ return 0;
+ }
+
+ if (!nl_proto_init)
+ nl_proto_initialize();
+
+ for (i = 0; i < 256; i++) {
+ if (nl_proto_tab[i] &&
+ strcmp(nl_proto_tab[i], arg) == 0) {
+ cache = nl_proto_tab[i];
+ res = i;
+ *id = res;
+ return 0;
+ }
+ }
+
+ res = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || res > 255)
+ return -1;
+ *id = res;
+ return 0;
+}
diff --git a/misc/ss.c b/misc/ss.c
index b7e0ef0..291d85f 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -2979,6 +2979,8 @@ static void netlink_show_one(struct filter *f,
int rq, int wq,
unsigned long long sk, unsigned long long cb)
{
+ SPRINT_BUF(prot_name);
+
if (f->f) {
struct tcpstat tst;
tst.local.family = AF_NETLINK;
@@ -2996,14 +2998,13 @@ static void netlink_show_one(struct filter *f,
if (state_width)
printf("%-*s ", state_width, "UNCONN");
printf("%-6d %-6d ", rq, wq);
- if (resolve_services && prot == 0)
- printf("%*s:", addr_width, "rtnl");
- else if (resolve_services && prot == 3)
- printf("%*s:", addr_width, "fw");
- else if (resolve_services && prot == 4)
- printf("%*s:", addr_width, "tcpdiag");
- else
- printf("%*d:", addr_width, prot);
+
+ if (resolve_services)
+ {
+ printf("%*s:", addr_width, nl_proto_n2a(prot, prot_name,
+ sizeof(prot_name)));
+ }
+
if (pid == -1) {
printf("%-*s ", serv_width, "*");
} else if (resolve_services) {
--
2.1.0
--
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