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-rw-r--r--net/rxrpc/protocol.h33
1 files changed, 29 insertions, 4 deletions
diff --git a/net/rxrpc/protocol.h b/net/rxrpc/protocol.h
index 4fe6b4d20ada..f8bfec12bc7e 100644
--- a/net/rxrpc/protocol.h
+++ b/net/rxrpc/protocol.h
@@ -92,11 +92,16 @@ struct rxrpc_jumbo_header {
/*
* The maximum number of subpackets that can possibly fit in a UDP packet is:
*
- * ((max_IP - IP_hdr - UDP_hdr) / RXRPC_JUMBO_SUBPKTLEN) + 1
- * = ((65535 - 28 - 28) / 1416) + 1
- * = 46 non-terminal packets and 1 terminal packet.
+ * (max_UDP - wirehdr + jumbohdr) / (jumbohdr + 1412)
+ * = ((65535 - 28 + 4) / 1416)
+ * = 45 non-terminal packets and 1 terminal packet.
*/
-#define RXRPC_MAX_NR_JUMBO 47
+#define RXRPC_MAX_NR_JUMBO 46
+
+/* Size of a jumbo packet with N subpackets, excluding UDP+IP */
+#define RXRPC_JUMBO(N) ((int)sizeof(struct rxrpc_wire_header) + \
+ RXRPC_JUMBO_DATALEN + \
+ ((N) - 1) * RXRPC_JUMBO_SUBPKTLEN)
/*****************************************************************************/
/*
@@ -176,4 +181,24 @@ struct rxkad_response {
__be32 ticket_len; /* Kerberos ticket length */
} __packed;
+/*
+ * GSSAPI security type-4 and type-6 data header.
+ */
+struct rxgk_header {
+ __be32 epoch;
+ __be32 cid;
+ __be32 call_number;
+ __be32 seq;
+ __be32 sec_index;
+ __be32 data_len;
+} __packed;
+
+/*
+ * GSSAPI security type-4 and type-6 response packet header.
+ */
+struct rxgk_response {
+ __be64 start_time;
+ __be32 token_len;
+} __packed;
+
#endif /* _LINUX_RXRPC_PACKET_H */