diff options
| author |   Davide Caratti <dcaratti@redhat.com> | 2019-08-30 12:25:48 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-08-31 23:44:28 -0700 |
| commit | 61723b393292f1e4ea27f8d123384d50b176c29d (patch) | |
| tree | 6ccca332feeef8a908c4ec63f865048cde4b88ea /include | |
| parent | net/tls: use RCU protection on icsk->icsk_ulp_data (diff) | |
| download | linux-dev-61723b393292f1e4ea27f8d123384d50b176c29d.tar.xz linux-dev-61723b393292f1e4ea27f8d123384d50b176c29d.zip | |
tcp: ulp: add functions to dump ulp-specific information
currently, only getsockopt(TCP_ULP) can be invoked to know if a ULP is on
top of a TCP socket. Extend idiag_get_aux() and idiag_get_aux_size(),
introduced by commit b37e88407c1d ("inet_diag: allow protocols to provide
additional data"), to report the ULP name and other information that can
be made available by the ULP through optional functions.
Users having CAP_NET_ADMIN privileges will then be able to retrieve this
information through inet_diag_handler, if they specify INET_DIAG_INFO in
the request.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/tcp.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/inet_diag.h | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 77fe87f7a992..c9a3f9688223 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -2122,6 +2122,9 @@ struct tcp_ulp_ops { void (*update)(struct sock *sk, struct proto *p); /* cleanup ulp */ void (*release)(struct sock *sk); + /* diagnostic */ + int (*get_info)(const struct sock *sk, struct sk_buff *skb); + size_t (*get_info_size)(const struct sock *sk); char name[TCP_ULP_NAME_MAX]; struct module *owner; diff --git a/include/uapi/linux/inet_diag.h b/include/uapi/linux/inet_diag.h index e8baca85bac6..e2c6273274f3 100644 --- a/include/uapi/linux/inet_diag.h +++ b/include/uapi/linux/inet_diag.h @@ -153,11 +153,19 @@ enum { INET_DIAG_BBRINFO, /* request as INET_DIAG_VEGASINFO */ INET_DIAG_CLASS_ID, /* request as INET_DIAG_TCLASS */ INET_DIAG_MD5SIG, + INET_DIAG_ULP_INFO, __INET_DIAG_MAX, }; #define INET_DIAG_MAX (__INET_DIAG_MAX - 1) +enum { + INET_ULP_INFO_UNSPEC, + INET_ULP_INFO_NAME, + __INET_ULP_INFO_MAX, +}; +#define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1) + /* INET_DIAG_MEM */ struct inet_diag_meminfo { |