net/handshake: Trace events for TLS Alert helpers
Add observability for the new TLS Alert infrastructure. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Link: https://lore.kernel.org/r/169047947409.5241.14548832149596892717.stgit@oracle-102.nfsv4bat.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Chuck Lever
Jakub Kicinski
parent
39067dda1d
commit
b470985c76
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@ -6,7 +6,86 @@
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#define _TRACE_HANDSHAKE_H
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#include <linux/net.h>
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#include <net/tls_prot.h>
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#include <linux/tracepoint.h>
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#include <trace/events/net_probe_common.h>
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#define TLS_RECORD_TYPE_LIST \
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record_type(CHANGE_CIPHER_SPEC) \
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record_type(ALERT) \
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record_type(HANDSHAKE) \
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record_type(DATA) \
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record_type(HEARTBEAT) \
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record_type(TLS12_CID) \
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record_type_end(ACK)
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#undef record_type
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#undef record_type_end
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#define record_type(x) TRACE_DEFINE_ENUM(TLS_RECORD_TYPE_##x);
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#define record_type_end(x) TRACE_DEFINE_ENUM(TLS_RECORD_TYPE_##x);
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TLS_RECORD_TYPE_LIST
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#undef record_type
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#undef record_type_end
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#define record_type(x) { TLS_RECORD_TYPE_##x, #x },
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#define record_type_end(x) { TLS_RECORD_TYPE_##x, #x }
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#define show_tls_content_type(type) \
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__print_symbolic(type, TLS_RECORD_TYPE_LIST)
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TRACE_DEFINE_ENUM(TLS_ALERT_LEVEL_WARNING);
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TRACE_DEFINE_ENUM(TLS_ALERT_LEVEL_FATAL);
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#define show_tls_alert_level(level) \
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__print_symbolic(level, \
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{ TLS_ALERT_LEVEL_WARNING, "Warning" }, \
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{ TLS_ALERT_LEVEL_FATAL, "Fatal" })
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#define TLS_ALERT_DESCRIPTION_LIST \
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alert_description(CLOSE_NOTIFY) \
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alert_description(UNEXPECTED_MESSAGE) \
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alert_description(BAD_RECORD_MAC) \
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alert_description(RECORD_OVERFLOW) \
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alert_description(HANDSHAKE_FAILURE) \
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alert_description(BAD_CERTIFICATE) \
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alert_description(UNSUPPORTED_CERTIFICATE) \
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alert_description(CERTIFICATE_REVOKED) \
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alert_description(CERTIFICATE_EXPIRED) \
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alert_description(CERTIFICATE_UNKNOWN) \
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alert_description(ILLEGAL_PARAMETER) \
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alert_description(UNKNOWN_CA) \
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alert_description(ACCESS_DENIED) \
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alert_description(DECODE_ERROR) \
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alert_description(DECRYPT_ERROR) \
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alert_description(TOO_MANY_CIDS_REQUESTED) \
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alert_description(PROTOCOL_VERSION) \
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alert_description(INSUFFICIENT_SECURITY) \
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alert_description(INTERNAL_ERROR) \
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alert_description(INAPPROPRIATE_FALLBACK) \
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alert_description(USER_CANCELED) \
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alert_description(MISSING_EXTENSION) \
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alert_description(UNSUPPORTED_EXTENSION) \
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alert_description(UNRECOGNIZED_NAME) \
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alert_description(BAD_CERTIFICATE_STATUS_RESPONSE) \
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alert_description(UNKNOWN_PSK_IDENTITY) \
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alert_description(CERTIFICATE_REQUIRED) \
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alert_description_end(NO_APPLICATION_PROTOCOL)
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#undef alert_description
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#undef alert_description_end
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#define alert_description(x) TRACE_DEFINE_ENUM(TLS_ALERT_DESC_##x);
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#define alert_description_end(x) TRACE_DEFINE_ENUM(TLS_ALERT_DESC_##x);
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TLS_ALERT_DESCRIPTION_LIST
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#undef alert_description
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#undef alert_description_end
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#define alert_description(x) { TLS_ALERT_DESC_##x, #x },
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#define alert_description_end(x) { TLS_ALERT_DESC_##x, #x }
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#define show_tls_alert_description(desc) \
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__print_symbolic(desc, TLS_ALERT_DESCRIPTION_LIST)
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DECLARE_EVENT_CLASS(handshake_event_class,
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TP_PROTO(
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@ -106,6 +185,47 @@ DECLARE_EVENT_CLASS(handshake_error_class,
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), \
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TP_ARGS(net, req, sk, err))
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DECLARE_EVENT_CLASS(handshake_alert_class,
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TP_PROTO(
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const struct sock *sk,
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unsigned char level,
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unsigned char description
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),
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TP_ARGS(sk, level, description),
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TP_STRUCT__entry(
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/* sockaddr_in6 is always bigger than sockaddr_in */
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__array(__u8, saddr, sizeof(struct sockaddr_in6))
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__array(__u8, daddr, sizeof(struct sockaddr_in6))
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__field(unsigned int, netns_ino)
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__field(unsigned long, level)
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__field(unsigned long, description)
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),
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TP_fast_assign(
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const struct inet_sock *inet = inet_sk(sk);
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memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
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memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
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TP_STORE_ADDR_PORTS(__entry, inet, sk);
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__entry->netns_ino = sock_net(sk)->ns.inum;
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__entry->level = level;
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__entry->description = description;
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),
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TP_printk("src=%pISpc dest=%pISpc %s: %s",
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__entry->saddr, __entry->daddr,
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show_tls_alert_level(__entry->level),
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show_tls_alert_description(__entry->description)
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)
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);
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#define DEFINE_HANDSHAKE_ALERT(name) \
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DEFINE_EVENT(handshake_alert_class, name, \
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TP_PROTO( \
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const struct sock *sk, \
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unsigned char level, \
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unsigned char description \
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), \
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TP_ARGS(sk, level, description))
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/*
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* Request lifetime events
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@ -154,6 +274,46 @@ DEFINE_HANDSHAKE_ERROR(handshake_cmd_accept_err);
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DEFINE_HANDSHAKE_FD_EVENT(handshake_cmd_done);
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DEFINE_HANDSHAKE_ERROR(handshake_cmd_done_err);
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/*
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* TLS Record events
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*/
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TRACE_EVENT(tls_contenttype,
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TP_PROTO(
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const struct sock *sk,
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unsigned char type
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),
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TP_ARGS(sk, type),
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TP_STRUCT__entry(
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/* sockaddr_in6 is always bigger than sockaddr_in */
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__array(__u8, saddr, sizeof(struct sockaddr_in6))
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__array(__u8, daddr, sizeof(struct sockaddr_in6))
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__field(unsigned int, netns_ino)
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__field(unsigned long, type)
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),
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TP_fast_assign(
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const struct inet_sock *inet = inet_sk(sk);
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memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
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memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
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TP_STORE_ADDR_PORTS(__entry, inet, sk);
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__entry->netns_ino = sock_net(sk)->ns.inum;
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__entry->type = type;
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),
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TP_printk("src=%pISpc dest=%pISpc %s",
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__entry->saddr, __entry->daddr,
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show_tls_content_type(__entry->type)
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)
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);
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/*
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* TLS Alert events
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*/
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DEFINE_HANDSHAKE_ALERT(tls_alert_send);
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DEFINE_HANDSHAKE_ALERT(tls_alert_recv);
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#endif /* _TRACE_HANDSHAKE_H */
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#include <trace/define_trace.h>
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@ -21,6 +21,8 @@
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#include "handshake.h"
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#include <trace/events/handshake.h>
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/**
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* tls_alert_send - send a TLS Alert on a kTLS socket
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* @sock: open kTLS socket to send on
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@ -39,6 +41,8 @@ int tls_alert_send(struct socket *sock, u8 level, u8 description)
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u8 alert[2];
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int ret;
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trace_tls_alert_send(sock->sk, level, description);
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alert[0] = level;
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alert[1] = description;
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iov.iov_base = alert;
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@ -77,6 +81,7 @@ u8 tls_get_record_type(const struct sock *sk, const struct cmsghdr *cmsg)
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return 0;
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record_type = *((u8 *)CMSG_DATA(cmsg));
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trace_tls_contenttype(sk, record_type);
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return record_type;
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}
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EXPORT_SYMBOL(tls_get_record_type);
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@ -99,5 +104,7 @@ void tls_alert_recv(const struct sock *sk, const struct msghdr *msg,
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data = iov->iov_base;
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*level = data[0];
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*description = data[1];
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trace_tls_alert_recv(sk, *level, *description);
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}
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EXPORT_SYMBOL(tls_alert_recv);
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@ -8,8 +8,10 @@
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*/
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#include <linux/types.h>
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#include <linux/ipv6.h>
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#include <net/sock.h>
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#include <net/inet_sock.h>
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#include <net/netlink.h>
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#include <net/genetlink.h>
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