diff options
Diffstat (limited to 'net/rxrpc/protocol.h')
| -rw-r--r-- | net/rxrpc/protocol.h | 59 |
1 files changed, 41 insertions, 18 deletions
diff --git a/net/rxrpc/protocol.h b/net/rxrpc/protocol.h index f9cb83c938f3..f8bfec12bc7e 100644 --- a/net/rxrpc/protocol.h +++ b/net/rxrpc/protocol.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* packet.h: Rx packet layout and definitions * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_RXRPC_PACKET_H @@ -61,7 +57,7 @@ struct rxrpc_wire_header { uint8_t userStatus; /* app-layer defined status */ #define RXRPC_USERSTATUS_SERVICE_UPGRADE 0x01 /* AuriStor service upgrade request */ - + uint8_t securityIndex; /* security protocol ID */ union { __be16 _rsvd; /* reserved */ @@ -88,11 +84,25 @@ struct rxrpc_jumbo_header { __be16 _rsvd; /* reserved */ __be16 cksum; /* kerberos security checksum */ }; -}; +} __packed; #define RXRPC_JUMBO_DATALEN 1412 /* non-terminal jumbo packet data length */ #define RXRPC_JUMBO_SUBPKTLEN (RXRPC_JUMBO_DATALEN + sizeof(struct rxrpc_jumbo_header)) +/* + * The maximum number of subpackets that can possibly fit in a UDP packet is: + * + * (max_UDP - wirehdr + jumbohdr) / (jumbohdr + 1412) + * = ((65535 - 28 + 4) / 1416) + * = 45 non-terminal packets and 1 terminal packet. + */ +#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) + /*****************************************************************************/ /* * on-the-wire Rx ACK packet data payload @@ -121,25 +131,18 @@ struct rxrpc_ackpacket { uint8_t nAcks; /* number of ACKs */ #define RXRPC_MAXACKS 255 - uint8_t acks[0]; /* list of ACK/NAKs */ + uint8_t acks[]; /* list of ACK/NAKs */ #define RXRPC_ACK_TYPE_NACK 0 #define RXRPC_ACK_TYPE_ACK 1 } __packed; -/* Some ACKs refer to specific packets and some are general and can be updated. */ -#define RXRPC_ACK_UPDATEABLE ((1 << RXRPC_ACK_REQUESTED) | \ - (1 << RXRPC_ACK_PING_RESPONSE) | \ - (1 << RXRPC_ACK_DELAY) | \ - (1 << RXRPC_ACK_IDLE)) - - /* * ACK packets can have a further piece of information tagged on the end */ -struct rxrpc_ackinfo { - __be32 rxMTU; /* maximum Rx MTU size (bytes) [AFS 3.3] */ - __be32 maxMTU; /* maximum interface MTU size (bytes) [AFS 3.3] */ +struct rxrpc_acktrailer { + __be32 maxMTU; /* maximum Rx MTU size (bytes) [AFS 3.3] */ + __be32 ifMTU; /* maximum interface MTU size (bytes) [AFS 3.3] */ __be32 rwind; /* Rx window size (packets) [AFS 3.4] */ __be32 jumbo_max; /* max packets to stick into a jumbo packet [AFS 3.5] */ }; @@ -178,4 +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 */ |