@@ -24,6 +24,9 @@ struct netns_mib {
#if IS_ENABLED(CONFIG_TLS)
DEFINE_SNMP_STAT(struct linux_tls_mib, tls_statistics);
#endif
+#if IS_ENABLED(CONFIG_QUIC)
+ DEFINE_SNMP_STAT(struct linux_quic_mib, quic_statistics);
+#endif
#ifdef CONFIG_MPTCP
DEFINE_SNMP_STAT(struct mptcp_mib, mptcp_statistics);
#endif
@@ -25,6 +25,16 @@
#define QUIC_MAX_PLAIN_PAGES 16
#define QUIC_MAX_CIPHER_PAGES_ORDER 4
+#define __QUIC_INC_STATS(net, field) \
+ __SNMP_INC_STATS((net)->mib.quic_statistics, field)
+#define QUIC_INC_STATS(net, field) \
+ SNMP_INC_STATS((net)->mib.quic_statistics, field)
+#define QUIC_DEC_STATS(net, field) \
+ SNMP_DEC_STATS((net)->mib.quic_statistics, field)
+
+int __net_init quic_proc_init(struct net *net);
+void __net_exit quic_proc_fini(struct net *net);
+
struct quic_internal_crypto_context {
struct quic_connection_info conn_info;
struct crypto_skcipher *header_tfm;
@@ -117,6 +117,12 @@ struct linux_tls_mib {
unsigned long mibs[LINUX_MIB_TLSMAX];
};
+/* Linux QUIC */
+#define LINUX_MIB_QUICMAX __LINUX_MIB_QUICMAX
+struct linux_quic_mib {
+ unsigned long mibs[LINUX_MIB_QUICMAX];
+};
+
#define DEFINE_SNMP_STAT(type, name) \
__typeof__(type) __percpu *name
#define DEFINE_SNMP_STAT_ATOMIC(type, name) \
@@ -349,4 +349,15 @@ enum
__LINUX_MIB_TLSMAX
};
+/* linux QUIC mib definitions */
+enum
+{
+ LINUX_MIB_QUICNUM = 0,
+ LINUX_MIB_QUICCURRTXSW, /* QuicCurrTxSw */
+ LINUX_MIB_QUICTXSW, /* QuicTxSw */
+ LINUX_MIB_QUICTXSWERROR, /* QuicTxSwError */
+ __LINUX_MIB_QUICMAX
+};
+
+
#endif /* _LINUX_SNMP_H */
@@ -5,4 +5,4 @@
obj-$(CONFIG_QUIC) += quic.o
-quic-y := quic_main.o
+quic-y := quic_main.o quic_proc.o
@@ -362,6 +362,8 @@ static int do_quic_conn_add_tx(struct sock *sk, sockptr_t optval,
if (rc < 0)
goto err_free_ciphers;
+ QUIC_INC_STATS(sock_net(sk), LINUX_MIB_QUICCURRTXSW);
+ QUIC_INC_STATS(sock_net(sk), LINUX_MIB_QUICTXSW);
return 0;
err_free_ciphers:
@@ -411,6 +413,7 @@ static int do_quic_conn_del_tx(struct sock *sk, sockptr_t optval,
crypto_free_aead(crypto_ctx->packet_aead);
memzero_explicit(crypto_ctx, sizeof(*crypto_ctx));
kfree(connhash);
+ QUIC_DEC_STATS(sock_net(sk), LINUX_MIB_QUICCURRTXSW);
return 0;
}
@@ -436,6 +439,9 @@ static int do_quic_setsockopt(struct sock *sk, int optname, sockptr_t optval,
break;
}
+ if (rc)
+ QUIC_INC_STATS(sock_net(sk), LINUX_MIB_QUICTXSWERROR);
+
return rc;
}
@@ -1242,6 +1248,9 @@ static int quic_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
quic_put_plain_user_pages(plain_pages, nr_plain_pages);
out:
+ if (unlikely(ret < 0))
+ QUIC_INC_STATS(sock_net(sk), LINUX_MIB_QUICTXSWERROR);
+
return ret;
}
@@ -1374,6 +1383,36 @@ static void quic_release(struct sock *sk)
release_sock(sk);
}
+static int __net_init quic_init_net(struct net *net)
+{
+ int err;
+
+ net->mib.quic_statistics = alloc_percpu(struct linux_quic_mib);
+ if (!net->mib.quic_statistics)
+ return -ENOMEM;
+
+ err = quic_proc_init(net);
+ if (err)
+ goto err_free_stats;
+
+ return 0;
+
+err_free_stats:
+ free_percpu(net->mib.quic_statistics);
+ return err;
+}
+
+static void __net_exit quic_exit_net(struct net *net)
+{
+ quic_proc_fini(net);
+ free_percpu(net->mib.quic_statistics);
+}
+
+static struct pernet_operations quic_proc_ops = {
+ .init = quic_init_net,
+ .exit = quic_exit_net,
+};
+
static struct udp_ulp_ops quic_ulp_ops __read_mostly = {
.name = "quic-crypto",
.owner = THIS_MODULE,
@@ -1383,6 +1422,12 @@ static struct udp_ulp_ops quic_ulp_ops __read_mostly = {
static int __init quic_register(void)
{
+ int err;
+
+ err = register_pernet_subsys(&quic_proc_ops);
+ if (err)
+ return err;
+
udp_register_ulp(&quic_ulp_ops);
return 0;
}
@@ -1390,6 +1435,7 @@ static int __init quic_register(void)
static void __exit quic_unregister(void)
{
udp_unregister_ulp(&quic_ulp_ops);
+ unregister_pernet_subsys(&quic_proc_ops);
}
module_init(quic_register);
new file mode 100644
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/* Copyright (C) 2019 Meta Platforms, Inc. */
+
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/snmp.h>
+#include <net/quic.h>
+
+#ifdef CONFIG_PROC_FS
+static const struct snmp_mib quic_mib_list[] = {
+ SNMP_MIB_ITEM("QuicCurrTxSw", LINUX_MIB_QUICCURRTXSW),
+ SNMP_MIB_ITEM("QuicTxSw", LINUX_MIB_QUICTXSW),
+ SNMP_MIB_ITEM("QuicTxSwError", LINUX_MIB_QUICTXSWERROR),
+ SNMP_MIB_SENTINEL
+};
+
+static int quic_statistics_seq_show(struct seq_file *seq, void *v)
+{
+ unsigned long buf[LINUX_MIB_QUICMAX] = {};
+ struct net *net = seq->private;
+ int i;
+
+ snmp_get_cpu_field_batch(buf, quic_mib_list, net->mib.quic_statistics);
+ for (i = 0; quic_mib_list[i].name; i++)
+ seq_printf(seq, "%-32s\t%lu\n", quic_mib_list[i].name, buf[i]);
+
+ return 0;
+}
+#endif
+
+int __net_init quic_proc_init(struct net *net)
+{
+#ifdef CONFIG_PROC_FS
+ if (!proc_create_net_single("quic_stat", 0444, net->proc_net,
+ quic_statistics_seq_show, NULL))
+ return -ENOMEM;
+#endif /* CONFIG_PROC_FS */
+
+ return 0;
+}
+
+void __net_exit quic_proc_fini(struct net *net)
+{
+ remove_proc_entry("quic_stat", net->proc_net);
+}
Added flow counters. Total flow counter is accumulative, the current shows the number of flows currently in flight, the error counters is accumulating the number of errors during Tx processing. Signed-off-by: Adel Abouchaev <adelab@fb.com> --- include/net/netns/mib.h | 3 +++ include/net/quic.h | 10 +++++++++ include/net/snmp.h | 6 +++++ include/uapi/linux/snmp.h | 11 ++++++++++ net/quic/Makefile | 2 +- net/quic/quic_main.c | 46 +++++++++++++++++++++++++++++++++++++++ net/quic/quic_proc.c | 45 ++++++++++++++++++++++++++++++++++++++ 7 files changed, 122 insertions(+), 1 deletion(-) create mode 100644 net/quic/quic_proc.c