|
 |
359b1d |
From afc9c910cc9c818180364860b04535def3c19b6e Mon Sep 17 00:00:00 2001
|
|
|
359b1d |
From: Andrea Claudi <aclaudi@redhat.com>
|
|
|
359b1d |
Date: Thu, 4 Jun 2020 19:27:41 +0200
|
|
|
359b1d |
Subject: [PATCH] ss: allow dumping MPTCP subflow information
|
|
|
359b1d |
|
|
|
359b1d |
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1812207
|
|
|
359b1d |
Upstream Status: unknown commit 712fdd98c0839
|
|
|
359b1d |
Conflicts: context changes and code slightly adapted in tcp_show_info()
|
|
|
359b1d |
due to missing commit 14cadc707b919 ("ss: allow dumping kTLS info")
|
|
|
359b1d |
|
|
|
359b1d |
commit 712fdd98c0839540a50baca0fb858c7a72d18031
|
|
|
359b1d |
Author: Davide Caratti <dcaratti@redhat.com>
|
|
|
359b1d |
Date: Thu Apr 23 15:37:09 2020 +0200
|
|
|
359b1d |
|
|
|
359b1d |
ss: allow dumping MPTCP subflow information
|
|
|
359b1d |
|
|
|
359b1d |
[root@f31 packetdrill]# ss -tni
|
|
|
359b1d |
|
|
|
359b1d |
ESTAB 0 0 192.168.82.247:8080 192.0.2.1:35273
|
|
|
359b1d |
cubic wscale:7,8 [...] tcp-ulp-mptcp flags:Mec token:0000(id:0)/5f856c60(id:0) seq:b810457db34209a5 sfseq:1 ssnoff:0 maplen:190
|
|
|
359b1d |
|
|
|
359b1d |
Additionally extends ss manpage to describe the new entry layout.
|
|
|
359b1d |
|
|
|
359b1d |
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
|
|
|
359b1d |
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
|
|
359b1d |
Signed-off-by: David Ahern <dsahern@gmail.com>
|
|
|
359b1d |
---
|
|
|
359b1d |
man/man8/ss.8 | 5 ++++
|
|
|
359b1d |
misc/ss.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
|
359b1d |
2 files changed, 74 insertions(+)
|
|
|
359b1d |
|
|
|
359b1d |
diff --git a/man/man8/ss.8 b/man/man8/ss.8
|
|
|
359b1d |
index 023d771b17878..c80853f98c49a 100644
|
|
|
359b1d |
--- a/man/man8/ss.8
|
|
|
359b1d |
+++ b/man/man8/ss.8
|
|
|
359b1d |
@@ -261,6 +261,11 @@ the pacing rate and max pacing rate
|
|
|
359b1d |
.TP
|
|
|
359b1d |
.B rcv_space:<rcv_space>
|
|
|
359b1d |
a helper variable for TCP internal auto tuning socket receive buffer
|
|
|
359b1d |
+.P
|
|
|
359b1d |
+.TP
|
|
|
359b1d |
+.B tcp-ulp-mptcp flags:[MmBbJjecv] token:<rem_token(rem_id)/loc_token(loc_id)> seq:<sn> sfseq:<ssn> ssnoff:<off> maplen:<maplen>
|
|
|
359b1d |
+MPTCP subflow information
|
|
|
359b1d |
+.P
|
|
|
359b1d |
.RE
|
|
|
359b1d |
.TP
|
|
|
359b1d |
.B \-\-tos
|
|
|
359b1d |
diff --git a/misc/ss.c b/misc/ss.c
|
|
|
359b1d |
index 363b4c8d87cd3..3d565af86087c 100644
|
|
|
359b1d |
--- a/misc/ss.c
|
|
|
359b1d |
+++ b/misc/ss.c
|
|
|
359b1d |
@@ -51,6 +51,7 @@
|
|
|
359b1d |
#include <linux/tipc.h>
|
|
|
359b1d |
#include <linux/tipc_netlink.h>
|
|
|
359b1d |
#include <linux/tipc_sockets_diag.h>
|
|
|
359b1d |
+#include <linux/mptcp.h>
|
|
|
359b1d |
|
|
|
359b1d |
/* AF_VSOCK/PF_VSOCK is only provided since glibc 2.18 */
|
|
|
359b1d |
#ifndef PF_VSOCK
|
|
|
359b1d |
@@ -2751,6 +2752,59 @@ static void print_md5sig(struct tcp_diag_md5sig *sig)
|
|
|
359b1d |
print_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
|
|
|
359b1d |
}
|
|
|
359b1d |
|
|
|
359b1d |
+static void mptcp_subflow_info(struct rtattr *tb[])
|
|
|
359b1d |
+{
|
|
|
359b1d |
+ u_int32_t flags = 0;
|
|
|
359b1d |
+
|
|
|
359b1d |
+ if (tb[MPTCP_SUBFLOW_ATTR_FLAGS]) {
|
|
|
359b1d |
+ char caps[32 + 1] = { 0 }, *cap = &caps[0];
|
|
|
359b1d |
+
|
|
|
359b1d |
+ flags = rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_FLAGS]);
|
|
|
359b1d |
+
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_MCAP_REM)
|
|
|
359b1d |
+ *cap++ = 'M';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_MCAP_LOC)
|
|
|
359b1d |
+ *cap++ = 'm';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_JOIN_REM)
|
|
|
359b1d |
+ *cap++ = 'J';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_JOIN_LOC)
|
|
|
359b1d |
+ *cap++ = 'j';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_BKUP_REM)
|
|
|
359b1d |
+ *cap++ = 'B';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_BKUP_LOC)
|
|
|
359b1d |
+ *cap++ = 'b';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_FULLY_ESTABLISHED)
|
|
|
359b1d |
+ *cap++ = 'e';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_CONNECTED)
|
|
|
359b1d |
+ *cap++ = 'c';
|
|
|
359b1d |
+ if (flags & MPTCP_SUBFLOW_FLAG_MAPVALID)
|
|
|
359b1d |
+ *cap++ = 'v';
|
|
|
359b1d |
+ if (flags)
|
|
|
359b1d |
+ out(" flags:%s", caps);
|
|
|
359b1d |
+ }
|
|
|
359b1d |
+ if (tb[MPTCP_SUBFLOW_ATTR_TOKEN_REM] &&
|
|
|
359b1d |
+ tb[MPTCP_SUBFLOW_ATTR_TOKEN_LOC] &&
|
|
|
359b1d |
+ tb[MPTCP_SUBFLOW_ATTR_ID_REM] &&
|
|
|
359b1d |
+ tb[MPTCP_SUBFLOW_ATTR_ID_LOC])
|
|
|
359b1d |
+ out(" token:%04x(id:%hhu)/%04x(id:%hhu)",
|
|
|
359b1d |
+ rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_TOKEN_REM]),
|
|
|
359b1d |
+ rta_getattr_u8(tb[MPTCP_SUBFLOW_ATTR_ID_REM]),
|
|
|
359b1d |
+ rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_TOKEN_LOC]),
|
|
|
359b1d |
+ rta_getattr_u8(tb[MPTCP_SUBFLOW_ATTR_ID_LOC]));
|
|
|
359b1d |
+ if (tb[MPTCP_SUBFLOW_ATTR_MAP_SEQ])
|
|
|
359b1d |
+ out(" seq:%llx",
|
|
|
359b1d |
+ rta_getattr_u64(tb[MPTCP_SUBFLOW_ATTR_MAP_SEQ]));
|
|
|
359b1d |
+ if (tb[MPTCP_SUBFLOW_ATTR_MAP_SFSEQ])
|
|
|
359b1d |
+ out(" sfseq:%x",
|
|
|
359b1d |
+ rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_MAP_SFSEQ]));
|
|
|
359b1d |
+ if (tb[MPTCP_SUBFLOW_ATTR_SSN_OFFSET])
|
|
|
359b1d |
+ out(" ssnoff:%x",
|
|
|
359b1d |
+ rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_SSN_OFFSET]));
|
|
|
359b1d |
+ if (tb[MPTCP_SUBFLOW_ATTR_MAP_DATALEN])
|
|
|
359b1d |
+ out(" maplen:%x",
|
|
|
359b1d |
+ rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_MAP_DATALEN]));
|
|
|
359b1d |
+}
|
|
|
359b1d |
+
|
|
|
359b1d |
#define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
|
|
|
359b1d |
|
|
|
359b1d |
static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
|
|
|
359b1d |
@@ -2906,6 +2960,21 @@ static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
|
|
|
359b1d |
print_md5sig(sig++);
|
|
|
359b1d |
}
|
|
|
359b1d |
}
|
|
|
359b1d |
+ if (tb[INET_DIAG_ULP_INFO]) {
|
|
|
359b1d |
+ struct rtattr *ulpinfo[INET_ULP_INFO_MAX + 1] = { 0 };
|
|
|
359b1d |
+
|
|
|
359b1d |
+ parse_rtattr_nested(ulpinfo, INET_ULP_INFO_MAX,
|
|
|
359b1d |
+ tb[INET_DIAG_ULP_INFO]);
|
|
|
359b1d |
+
|
|
|
359b1d |
+ if (ulpinfo[INET_ULP_INFO_MPTCP]) {
|
|
|
359b1d |
+ struct rtattr *sfinfo[MPTCP_SUBFLOW_ATTR_MAX + 1] =
|
|
|
359b1d |
+ { 0 };
|
|
|
359b1d |
+
|
|
|
359b1d |
+ parse_rtattr_nested(sfinfo, MPTCP_SUBFLOW_ATTR_MAX,
|
|
|
359b1d |
+ ulpinfo[INET_ULP_INFO_MPTCP]);
|
|
|
359b1d |
+ mptcp_subflow_info(sfinfo);
|
|
|
359b1d |
+ }
|
|
|
359b1d |
+ }
|
|
|
359b1d |
}
|
|
|
359b1d |
|
|
|
359b1d |
static const char *format_host_sa(struct sockaddr_storage *sa)
|
|
|
359b1d |
--
|
|
|
359b1d |
2.26.2
|
|
|
359b1d |
|