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authorSoheil Hassas Yeganeh <soheil@google.com>2016-04-02 23:08:09 -0400
committerDavid S. Miller <davem@davemloft.net>2016-04-04 15:50:30 -0400
commit3dd17e63f5131bf2528f34aa5e3e57758175af92 (patch)
treefd9d66aa0e6e9d8b8fa489a4396a21e25df37908 /include/net/sock.h
parent6b084928baac562ed61866f540a96120e9c9ddb7 (diff)
sock: accept SO_TIMESTAMPING flags in socket cmsg
Accept SO_TIMESTAMPING in control messages of the SOL_SOCKET level as a basis to accept timestamping requests per write. This implementation only accepts TX recording flags (i.e., SOF_TIMESTAMPING_TX_HARDWARE, SOF_TIMESTAMPING_TX_SOFTWARE, SOF_TIMESTAMPING_TX_SCHED, and SOF_TIMESTAMPING_TX_ACK) in control messages. Users need to set reporting flags (e.g., SOF_TIMESTAMPING_OPT_ID) per socket via socket options. This commit adds a tsflags field in sockcm_cookie which is set in __sock_cmsg_send. It only override the SOF_TIMESTAMPING_TX_* bits in sockcm_cookie.tsflags allowing the control message to override the recording behavior per write, yet maintaining the value of other flags. This patch implements validating the control message and setting tsflags in struct sockcm_cookie. Next commits in this series will actually implement timestamping per write for different protocols. Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 03772d4b06e6..af012da5e608 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1418,6 +1418,7 @@ void sk_send_sigurg(struct sock *sk);
struct sockcm_cookie {
u32 mark;
+ u16 tsflags;
};
int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg,