[PATCH] IB: Introduce RMPP APIs
Introduce RMPP APIs Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Hal Rosenstock <halr@voltaire.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -777,7 +777,7 @@ static int get_buf_length(int hdr_len, int data_len)
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struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
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u32 remote_qpn, u16 pkey_index,
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struct ib_ah *ah,
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struct ib_ah *ah, int rmpp_active,
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int hdr_len, int data_len,
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unsigned int __nocast gfp_mask)
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{
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@ -786,6 +786,8 @@ struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
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int buf_size;
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void *buf;
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if (rmpp_active)
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return ERR_PTR(-EINVAL); /* until RMPP implemented */
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mad_agent_priv = container_of(mad_agent,
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struct ib_mad_agent_private, agent);
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buf_size = get_buf_length(hdr_len, data_len);
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@ -50,26 +50,6 @@ MODULE_AUTHOR("Roland Dreier");
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MODULE_DESCRIPTION("InfiniBand subnet administration query support");
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MODULE_LICENSE("Dual BSD/GPL");
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/*
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* These two structures must be packed because they have 64-bit fields
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* that are only 32-bit aligned. 64-bit architectures will lay them
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* out wrong otherwise. (And unfortunately they are sent on the wire
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* so we can't change the layout)
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*/
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struct ib_sa_hdr {
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u64 sm_key;
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u16 attr_offset;
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u16 reserved;
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ib_sa_comp_mask comp_mask;
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} __attribute__ ((packed));
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struct ib_sa_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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struct ib_sa_hdr sa_hdr;
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u8 data[200];
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} __attribute__ ((packed));
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struct ib_sa_sm_ah {
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struct ib_ah *ah;
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struct kref ref;
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@ -33,7 +33,7 @@
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* $Id: ib_mad.h 1389 2004-12-27 22:56:47Z roland $
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* $Id: ib_mad.h 2775 2005-07-02 13:42:12Z halr $
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*/
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#if !defined( IB_MAD_H )
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@ -58,6 +58,8 @@
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#define IB_MGMT_CLASS_VENDOR_RANGE2_START 0x30
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#define IB_MGMT_CLASS_VENDOR_RANGE2_END 0x4F
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#define IB_OPENIB_OUI (0x001405)
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/* Management methods */
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#define IB_MGMT_METHOD_GET 0x01
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#define IB_MGMT_METHOD_SET 0x02
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@ -72,6 +74,33 @@
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#define IB_MGMT_MAX_METHODS 128
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/* RMPP information */
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#define IB_MGMT_RMPP_VERSION 1
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#define IB_MGMT_RMPP_TYPE_DATA 1
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#define IB_MGMT_RMPP_TYPE_ACK 2
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#define IB_MGMT_RMPP_TYPE_STOP 3
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#define IB_MGMT_RMPP_TYPE_ABORT 4
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#define IB_MGMT_RMPP_FLAG_ACTIVE 1
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#define IB_MGMT_RMPP_FLAG_FIRST (1<<1)
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#define IB_MGMT_RMPP_FLAG_LAST (1<<2)
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#define IB_MGMT_RMPP_NO_RESPTIME 0x1F
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#define IB_MGMT_RMPP_STATUS_SUCCESS 0
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#define IB_MGMT_RMPP_STATUS_RESX 1
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#define IB_MGMT_RMPP_STATUS_T2L 118
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#define IB_MGMT_RMPP_STATUS_BAD_LEN 119
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#define IB_MGMT_RMPP_STATUS_BAD_SEG 120
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#define IB_MGMT_RMPP_STATUS_BADT 121
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#define IB_MGMT_RMPP_STATUS_W2S 122
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#define IB_MGMT_RMPP_STATUS_S2B 123
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#define IB_MGMT_RMPP_STATUS_BAD_STATUS 124
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#define IB_MGMT_RMPP_STATUS_UNV 125
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#define IB_MGMT_RMPP_STATUS_TMR 126
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#define IB_MGMT_RMPP_STATUS_UNSPEC 127
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#define IB_QP0 0
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#define IB_QP1 __constant_htonl(1)
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#define IB_QP1_QKEY 0x80010000
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@ -88,7 +117,7 @@ struct ib_mad_hdr {
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u16 attr_id;
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u16 resv;
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u32 attr_mod;
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} __attribute__ ((packed));
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};
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struct ib_rmpp_hdr {
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u8 rmpp_version;
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@ -97,17 +126,41 @@ struct ib_rmpp_hdr {
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u8 rmpp_status;
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u32 seg_num;
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u32 paylen_newwin;
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};
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typedef u64 __bitwise ib_sa_comp_mask;
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#define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n))
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/*
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* ib_sa_hdr and ib_sa_mad structures must be packed because they have
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* 64-bit fields that are only 32-bit aligned. 64-bit architectures will
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* lay them out wrong otherwise. (And unfortunately they are sent on
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* the wire so we can't change the layout)
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*/
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struct ib_sa_hdr {
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u64 sm_key;
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u16 attr_offset;
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u16 reserved;
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ib_sa_comp_mask comp_mask;
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} __attribute__ ((packed));
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struct ib_mad {
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struct ib_mad_hdr mad_hdr;
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u8 data[232];
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} __attribute__ ((packed));
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};
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struct ib_rmpp_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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u8 data[220];
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};
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struct ib_sa_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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struct ib_sa_hdr sa_hdr;
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u8 data[200];
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} __attribute__ ((packed));
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struct ib_vendor_mad {
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@ -116,7 +169,7 @@ struct ib_vendor_mad {
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u8 reserved;
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u8 oui[3];
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u8 data[216];
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} __attribute__ ((packed));
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};
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/**
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* ib_mad_send_buf - MAD data buffer and work request for sends.
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@ -142,6 +195,45 @@ struct ib_mad_send_buf {
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struct ib_sge sge;
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};
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/**
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* ib_get_rmpp_resptime - Returns the RMPP response time.
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* @rmpp_hdr: An RMPP header.
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*/
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static inline u8 ib_get_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr)
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{
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return rmpp_hdr->rmpp_rtime_flags >> 3;
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}
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/**
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* ib_get_rmpp_flags - Returns the RMPP flags.
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* @rmpp_hdr: An RMPP header.
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*/
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static inline u8 ib_get_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr)
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{
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return rmpp_hdr->rmpp_rtime_flags & 0x7;
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}
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/**
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* ib_set_rmpp_resptime - Sets the response time in an RMPP header.
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* @rmpp_hdr: An RMPP header.
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* @rtime: The response time to set.
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*/
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static inline void ib_set_rmpp_resptime(struct ib_rmpp_hdr *rmpp_hdr, u8 rtime)
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{
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rmpp_hdr->rmpp_rtime_flags = ib_get_rmpp_flags(rmpp_hdr) | (rtime << 3);
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}
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/**
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* ib_set_rmpp_flags - Sets the flags in an RMPP header.
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* @rmpp_hdr: An RMPP header.
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* @flags: The flags to set.
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*/
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static inline void ib_set_rmpp_flags(struct ib_rmpp_hdr *rmpp_hdr, u8 flags)
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{
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rmpp_hdr->rmpp_rtime_flags = (rmpp_hdr->rmpp_rtime_flags & 0xF1) |
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(flags & 0x7);
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}
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struct ib_mad_agent;
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struct ib_mad_send_wc;
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struct ib_mad_recv_wc;
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@ -186,6 +278,7 @@ typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
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* ib_mad_agent - Used to track MAD registration with the access layer.
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* @device: Reference to device registration is on.
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* @qp: Reference to QP used for sending and receiving MADs.
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* @mr: Memory region for system memory usable for DMA.
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* @recv_handler: Callback handler for a received MAD.
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* @send_handler: Callback handler for a sent MAD.
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* @snoop_handler: Callback handler for snooped sent MADs.
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@ -194,6 +287,7 @@ typedef void (*ib_mad_recv_handler)(struct ib_mad_agent *mad_agent,
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* Unsolicited MADs sent by this client will have the upper 32-bits
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* of their TID set to this value.
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* @port_num: Port number on which QP is registered
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* @rmpp_version: If set, indicates the RMPP version used by this agent.
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*/
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struct ib_mad_agent {
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struct ib_device *device;
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@ -205,6 +299,7 @@ struct ib_mad_agent {
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void *context;
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u32 hi_tid;
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u8 port_num;
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u8 rmpp_version;
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};
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/**
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* ib_mad_recv_wc - received MAD information.
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* @wc: Completion information for the received data.
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* @recv_buf: Specifies the location of the received data buffer(s).
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* @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers.
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* @mad_len: The length of the received MAD, without duplicated headers.
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*
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* For received response, the wr_id field of the wc is set to the wr_id
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@ -246,6 +342,7 @@ struct ib_mad_recv_buf {
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struct ib_mad_recv_wc {
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struct ib_wc *wc;
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struct ib_mad_recv_buf recv_buf;
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struct list_head rmpp_list;
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int mad_len;
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};
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@ -341,6 +438,16 @@ int ib_unregister_mad_agent(struct ib_mad_agent *mad_agent);
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* @bad_send_wr: Specifies the MAD on which an error was encountered.
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*
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* Sent MADs are not guaranteed to complete in the order that they were posted.
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*
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* If the MAD requires RMPP, the data buffer should contain a single copy
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* of the common MAD, RMPP, and class specific headers, followed by the class
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* defined data. If the class defined data would not divide evenly into
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* RMPP segments, then space must be allocated at the end of the referenced
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* buffer for any required padding. To indicate the amount of class defined
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* data being transferred, the paylen_newwin field in the RMPP header should
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* be set to the size of the class specific header plus the amount of class
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* defined data being transferred. The paylen_newwin field should be
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* specified in network-byte order.
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*/
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int ib_post_send_mad(struct ib_mad_agent *mad_agent,
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struct ib_send_wr *send_wr,
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* referenced buffer should be at least the size of the mad_len specified
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* by @mad_recv_wc.
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*
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* This call copies a chain of received RMPP MADs into a single data buffer,
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* This call copies a chain of received MAD segments into a single data buffer,
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* removing duplicated headers.
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*/
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void ib_coalesce_recv_mad(struct ib_mad_recv_wc *mad_recv_wc, void *buf);
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/**
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* ib_free_recv_mad - Returns data buffers used to receive a MAD to the
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* access layer.
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* ib_free_recv_mad - Returns data buffers used to receive a MAD.
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* @mad_recv_wc: Work completion information for a received MAD.
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*
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* Clients receiving MADs through their ib_mad_recv_handler must call this
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* @pkey_index: Specifies which PKey the MAD will be sent using. This field
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* is valid only if the remote_qpn is QP 1.
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* @ah: References the address handle used to transfer to the remote node.
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* @rmpp_active: Indicates if the send will enable RMPP.
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* @hdr_len: Indicates the size of the data header of the MAD. This length
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* should include the common MAD header, RMPP header, plus any class
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* specific header.
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* @data_len: Indicates the size of any user-transfered data. The call will
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* @data_len: Indicates the size of any user-transferred data. The call will
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* automatically adjust the allocated buffer size to account for any
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* additional padding that may be necessary.
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* @gfp_mask: GFP mask used for the memory allocation.
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* This is a helper routine that may be used to allocate a MAD. Users are
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* not required to allocate outbound MADs using this call. The returned
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* MAD send buffer will reference a data buffer usable for sending a MAD, along
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* with an intialized work request structure.
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* with an initialized work request structure. Users may modify the returned
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* MAD data buffer or work request before posting the send.
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*
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* The returned data buffer will be cleared. Users are responsible for
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* initializing the common MAD and any class specific headers. If @rmpp_active
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* is set, the RMPP header will be initialized for sending.
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*/
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struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
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u32 remote_qpn, u16 pkey_index,
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struct ib_ah *ah,
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struct ib_ah *ah, int rmpp_active,
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int hdr_len, int data_len,
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unsigned int __nocast gfp_mask);
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@ -87,10 +87,6 @@ static inline int ib_sa_rate_enum_to_int(enum ib_sa_rate rate)
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}
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}
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typedef u64 __bitwise ib_sa_comp_mask;
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#define IB_SA_COMP_MASK(n) ((__force ib_sa_comp_mask) cpu_to_be64(1ull << n))
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/*
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* Structures for SA records are named "struct ib_sa_xxx_rec." No
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* attempt is made to pack structures to match the physical layout of
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