Phonet: Pipe End Point for Phonet Pipes protocol (9641458d) · Commits · 戴 / test

include/linux/phonet.h

+3 −1

Original line number	Diff line number	Diff line
		@@ -27,7 +27,9 @@
		#define PN_PROTO_TRANSPORT 0
		/* Phonet datagram socket */
		#define PN_PROTO_PHONET 1
		#define PHONET_NPROTO 2
		/* Phonet pipe */
		#define PN_PROTO_PIPE 2
		#define PHONET_NPROTO 3

		#define PNADDR_ANY 0
		#define PNPORT_RESOURCE_ROUTING 0

include/net/phonet/pep.h

+114 −0

Original line number	Diff line number	Diff line
		@@ -26,11 +26,21 @@
		struct pep_sock {
		struct pn_sock pn_sk;

		/* XXX: union-ify listening vs connected stuff ? */
		/* Listening socket stuff: */
		struct hlist_head ackq;
		struct hlist_head hlist;

		/* Connected socket stuff: */
		struct sock *listener;
		u16 peer_type; /* peer type/subtype */
		u8 pipe_handle;

		u8 rx_credits;
		u8 tx_credits;
		u8 rx_fc; /* RX flow control */
		u8 tx_fc; /* TX flow control */
		u8 init_enable; /* auto-enable at creation */
		};

		static inline struct pep_sock pep_sk(struct sock sk)
		@@ -40,4 +50,108 @@ static inline struct pep_sock pep_sk(struct sock sk)

		extern const struct proto_ops phonet_stream_ops;

		/* Pipe protocol definitions */
		struct pnpipehdr {
		u8 utid; /* transaction ID */
		u8 message_id;
		u8 pipe_handle;
		union {
		u8 state_after_connect; /* connect request */
		u8 state_after_reset; /* reset request */
		u8 error_code; /* any response */
		u8 pep_type; /* status indication */
		u8 data[1];
		};
		};
		#define other_pep_type data[1]

		static inline struct pnpipehdr pnp_hdr(struct sk_buff skb)
		{
		return (struct pnpipehdr *)skb_transport_header(skb);
		}

		#define MAX_PNPIPE_HEADER (MAX_PHONET_HEADER + 4)

		enum {
		PNS_PIPE_DATA = 0x20,

		PNS_PEP_CONNECT_REQ = 0x40,
		PNS_PEP_CONNECT_RESP,
		PNS_PEP_DISCONNECT_REQ,
		PNS_PEP_DISCONNECT_RESP,
		PNS_PEP_RESET_REQ,
		PNS_PEP_RESET_RESP,
		PNS_PEP_ENABLE_REQ,
		PNS_PEP_ENABLE_RESP,
		PNS_PEP_CTRL_REQ,
		PNS_PEP_CTRL_RESP,
		PNS_PEP_DISABLE_REQ = 0x4C,
		PNS_PEP_DISABLE_RESP,

		PNS_PEP_STATUS_IND = 0x60,
		PNS_PIPE_CREATED_IND,
		PNS_PIPE_RESET_IND = 0x63,
		PNS_PIPE_ENABLED_IND,
		PNS_PIPE_REDIRECTED_IND,
		PNS_PIPE_DISABLED_IND = 0x66,
		};

		#define PN_PIPE_INVALID_HANDLE 0xff
		#define PN_PEP_TYPE_COMMON 0x00

		/* Phonet pipe status indication */
		enum {
		PN_PEP_IND_FLOW_CONTROL,
		PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
		};

		/* Phonet pipe error codes */
		enum {
		PN_PIPE_NO_ERROR,
		PN_PIPE_ERR_INVALID_PARAM,
		PN_PIPE_ERR_INVALID_HANDLE,
		PN_PIPE_ERR_INVALID_CTRL_ID,
		PN_PIPE_ERR_NOT_ALLOWED,
		PN_PIPE_ERR_PEP_IN_USE,
		PN_PIPE_ERR_OVERLOAD,
		PN_PIPE_ERR_DEV_DISCONNECTED,
		PN_PIPE_ERR_TIMEOUT,
		PN_PIPE_ERR_ALL_PIPES_IN_USE,
		PN_PIPE_ERR_GENERAL,
		PN_PIPE_ERR_NOT_SUPPORTED,
		};

		/* Phonet pipe states */
		enum {
		PN_PIPE_DISABLE,
		PN_PIPE_ENABLE,
		};

		/* Phonet pipe sub-block types */
		enum {
		PN_PIPE_SB_CREATE_REQ_PEP_SUB_TYPE,
		PN_PIPE_SB_CONNECT_REQ_PEP_SUB_TYPE,
		PN_PIPE_SB_REDIRECT_REQ_PEP_SUB_TYPE,
		PN_PIPE_SB_NEGOTIATED_FC,
		PN_PIPE_SB_REQUIRED_FC_TX,
		PN_PIPE_SB_PREFERRED_FC_RX,
		};

		/* Phonet pipe flow control models */
		enum {
		PN_NO_FLOW_CONTROL,
		PN_LEGACY_FLOW_CONTROL,
		PN_ONE_CREDIT_FLOW_CONTROL,
		PN_MULTI_CREDIT_FLOW_CONTROL,
		};

		#define pn_flow_safe(fc) ((fc) >> 1)

		/* Phonet pipe flow control states */
		enum {
		PEP_IND_EMPTY,
		PEP_IND_BUSY,
		PEP_IND_READY,
		};

		#endif

net/phonet/Makefile

+3 −1

Original line number	Diff line number	Diff line
		obj-$(CONFIG_PHONET) += phonet.o
		obj-$(CONFIG_PHONET) += phonet.o pn_pep.o

		phonet-objs := \
		pn_dev.o \
		@@ -7,3 +7,5 @@ phonet-objs := \
		datagram.o \
		sysctl.o \
		af_phonet.o

		pn_pep-objs := pep.o

net/phonet/af_phonet.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -58,6 +58,9 @@ static int pn_socket_create(struct net net, struct socket sock, int protocol)
		case SOCK_DGRAM:
		protocol = PN_PROTO_PHONET;
		break;
		case SOCK_SEQPACKET:
		protocol = PN_PROTO_PIPE;
		break;
		default:
		return -EPROTONOSUPPORT;
		}

net/phonet/pep.c

0 → 100644

+908 −0

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