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authorDavide Caratti <dcaratti@redhat.com>2019-08-30 12:25:48 +0200
committerDavid S. Miller <davem@davemloft.net>2019-08-31 23:44:28 -0700
commit61723b393292f1e4ea27f8d123384d50b176c29d (patch)
tree6ccca332feeef8a908c4ec63f865048cde4b88ea /include/net/tcp.h
parentnet/tls: use RCU protection on icsk->icsk_ulp_data (diff)
downloadlinux-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/net/tcp.h')
-rw-r--r--include/net/tcp.h3
1 files changed, 3 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;