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ss: allow dumping kTLS info

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now that INET_DIAG_INFO requests can dump TCP ULP information, extend 'ss'
to allow diagnosing kTLS when it is attached to a TCP socket. While at it,
import kTLS uAPI definitions from the latest net-next tree.

CC: Andrea Claudi <aclaudi@redhat.com>
Co-developed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Davide Caratti 2019-10-07 12:16:44 +02:00 committed by David Ahern
parent 4c23b12865
commit 14cadc707b
1 changed files with 89 additions and 0 deletions
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89
misc/ss.c
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@ -51,6 +51,7 @@
#include <linux/tipc.h>
#include <linux/tipc_netlink.h>
#include <linux/tipc_sockets_diag.h>
#include <linux/tls.h>
/* AF_VSOCK/PF_VSOCK is only provided since glibc 2.18 */
#ifndef PF_VSOCK
@ -2751,6 +2752,72 @@ static void print_md5sig(struct tcp_diag_md5sig *sig)
print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
}
static void tcp_tls_version(struct rtattr *attr)
{
u_int16_t val;
if (!attr)
return;
val = rta_getattr_u16(attr);
switch (val) {
case TLS_1_2_VERSION:
out(" version: 1.2");
break;
case TLS_1_3_VERSION:
out(" version: 1.3");
break;
default:
out(" version: unknown(%hu)", val);
break;
}
}
static void tcp_tls_cipher(struct rtattr *attr)
{
u_int16_t val;
if (!attr)
return;
val = rta_getattr_u16(attr);
switch (val) {
case TLS_CIPHER_AES_GCM_128:
out(" cipher: aes-gcm-128");
break;
case TLS_CIPHER_AES_GCM_256:
out(" cipher: aes-gcm-256");
break;
}
}
static void tcp_tls_conf(const char *name, struct rtattr *attr)
{
u_int16_t val;
if (!attr)
return;
val = rta_getattr_u16(attr);
switch (val) {
case TLS_CONF_BASE:
out(" %s: none", name);
break;
case TLS_CONF_SW:
out(" %s: sw", name);
break;
case TLS_CONF_HW:
out(" %s: hw", name);
break;
case TLS_CONF_HW_RECORD:
out(" %s: hw-record", name);
break;
default:
out(" %s: unknown(%hu)", name, val);
break;
}
}
#define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
@ -2906,6 +2973,28 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
print_md5sig(sig++);
}
}
if (tb[INET_DIAG_ULP_INFO]) {
struct rtattr *ulpinfo[INET_ULP_INFO_MAX + 1] = { 0 };
parse_rtattr_nested(ulpinfo, INET_ULP_INFO_MAX,
tb[INET_DIAG_ULP_INFO]);
if (ulpinfo[INET_ULP_INFO_NAME])
out(" tcp-ulp-%s",
rta_getattr_str(ulpinfo[INET_ULP_INFO_NAME]));
if (ulpinfo[INET_ULP_INFO_TLS]) {
struct rtattr *tlsinfo[TLS_INFO_MAX + 1] = { 0 };
parse_rtattr_nested(tlsinfo, TLS_INFO_MAX,
ulpinfo[INET_ULP_INFO_TLS]);
tcp_tls_version(tlsinfo[TLS_INFO_VERSION]);
tcp_tls_cipher(tlsinfo[TLS_INFO_CIPHER]);
tcp_tls_conf("rxconf", tlsinfo[TLS_INFO_RXCONF]);
tcp_tls_conf("txconf", tlsinfo[TLS_INFO_TXCONF]);
}
}
}
static const char *format_host_sa(struct sockaddr_storage *sa)