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rxrpc: Update protocol definitions slightly

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Update the protocol definitions in include/rxrpc/packet.h slightly:

 (1) Get rid of RXRPC_PROCESS_MAXCALLS as it's redundant (same as
     RXRPC_MAXCALLS).

 (2) In struct rxrpc_jumbo_header, put _rsvd in a union with a field called
     cksum to match struct rxrpc_wire_header.

 (3) Provide RXRPC_JUMBO_SUBPKTLEN which is the total of the amount of data
     in a non-terminal subpacket plus the following secondary header for
     the next packet included in the jumbo packet.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-09-08 11:10:11 +01:00
parent cf13258fd4
commit 18f1387c7d
1 changed files with 5 additions and 3 deletions
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include/rxrpc/packet.h
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@ -34,8 +34,6 @@ struct rxrpc_wire_header {
#define RXRPC_CID_INC (1 << RXRPC_CIDSHIFT) /* connection ID increment */
__be32 callNumber; /* call ID (0 for connection-level packets) */
#define RXRPC_PROCESS_MAXCALLS (1<<2) /* maximum number of active calls per conn (power of 2) */
__be32 seq; /* sequence number of pkt in call stream */
__be32 serial; /* serial number of pkt sent to network */
@ -93,10 +91,14 @@ struct rxrpc_wire_header {
struct rxrpc_jumbo_header {
uint8_t flags; /* packet flags (as per rxrpc_header) */
uint8_t pad;
__be16 _rsvd; /* reserved (used by kerberos security as cksum) */
union {
__be16 _rsvd; /* reserved */
__be16 cksum; /* kerberos security checksum */
};
};
#define RXRPC_JUMBO_DATALEN 1412 /* non-terminal jumbo packet data length */
#define RXRPC_JUMBO_SUBPKTLEN (RXRPC_JUMBO_DATALEN + sizeof(struct rxrpc_jumbo_header))
/*****************************************************************************/
/*