^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright(c) 2016 - 2020 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef DEF_RDMAVT_INCQP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define DEF_RDMAVT_INCQP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <rdma/rdma_vt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <rdma/ib_pack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <rdma/ib_verbs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <rdma/rdmavt_cq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <rdma/rvt-abi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Atomic bit definitions for r_aflags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define RVT_R_WRID_VALID 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define RVT_R_REWIND_SGE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Bit definitions for r_flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define RVT_R_REUSE_SGE 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define RVT_R_RDMAR_SEQ 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define RVT_R_RSP_NAK 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define RVT_R_RSP_SEND 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define RVT_R_COMM_EST 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * If a packet's QP[23:16] bits match this value, then it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * a PSM packet and the hardware will expect a KDETH header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * following the BTH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define RVT_KDETH_QP_PREFIX 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define RVT_KDETH_QP_SUFFIX 0xffff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define RVT_KDETH_QP_PREFIX_MASK 0x00ff0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define RVT_KDETH_QP_PREFIX_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define RVT_KDETH_QP_BASE (u32)(RVT_KDETH_QP_PREFIX << \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) RVT_KDETH_QP_PREFIX_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define RVT_KDETH_QP_MAX (u32)(RVT_KDETH_QP_BASE + RVT_KDETH_QP_SUFFIX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * If a packet's LNH == BTH and DEST QPN[23:16] in the BTH match this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * prefix value, then it is an AIP packet with a DETH containing the entropy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * value in byte 4 following the BTH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define RVT_AIP_QP_PREFIX 0x81
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define RVT_AIP_QP_SUFFIX 0xffff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define RVT_AIP_QP_PREFIX_MASK 0x00ff0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define RVT_AIP_QP_PREFIX_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define RVT_AIP_QP_BASE (u32)(RVT_AIP_QP_PREFIX << \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) RVT_AIP_QP_PREFIX_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define RVT_AIP_QPN_MAX BIT(RVT_AIP_QP_PREFIX_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define RVT_AIP_QP_MAX (u32)(RVT_AIP_QP_BASE + RVT_AIP_QPN_MAX - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * Bit definitions for s_flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * RVT_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * RVT_S_BUSY - send tasklet is processing the QP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * RVT_S_TIMER - the RC retry timer is active
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * RVT_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * RVT_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * before processing the next SWQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * RVT_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * before processing the next SWQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * RVT_S_WAIT_RNR - waiting for RNR timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * RVT_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * RVT_S_WAIT_DMA - waiting for send DMA queue to drain before generating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * next send completion entry not via send DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * RVT_S_WAIT_PIO - waiting for a send buffer to be available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * RVT_S_WAIT_TX - waiting for a struct verbs_txreq to be available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * RVT_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * RVT_S_WAIT_KMEM - waiting for kernel memory to be available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * RVT_S_WAIT_PSN - waiting for a packet to exit the send DMA queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * RVT_S_WAIT_ACK - waiting for an ACK packet before sending more requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * RVT_S_SEND_ONE - send one packet, request ACK, then wait for ACK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * RVT_S_ECN - a BECN was queued to the send engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * RVT_S_MAX_BIT_MASK - The max bit that can be used by rdmavt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define RVT_S_SIGNAL_REQ_WR 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define RVT_S_BUSY 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define RVT_S_TIMER 0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define RVT_S_RESP_PENDING 0x0008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define RVT_S_ACK_PENDING 0x0010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define RVT_S_WAIT_FENCE 0x0020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define RVT_S_WAIT_RDMAR 0x0040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define RVT_S_WAIT_RNR 0x0080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define RVT_S_WAIT_SSN_CREDIT 0x0100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define RVT_S_WAIT_DMA 0x0200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define RVT_S_WAIT_PIO 0x0400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define RVT_S_WAIT_TX 0x0800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define RVT_S_WAIT_DMA_DESC 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define RVT_S_WAIT_KMEM 0x2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define RVT_S_WAIT_PSN 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define RVT_S_WAIT_ACK 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define RVT_S_SEND_ONE 0x10000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define RVT_S_UNLIMITED_CREDIT 0x20000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define RVT_S_ECN 0x40000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define RVT_S_MAX_BIT_MASK 0x800000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * Drivers should use s_flags starting with bit 31 down to the bit next to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * RVT_S_MAX_BIT_MASK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * Wait flags that would prevent any packet type from being sent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define RVT_S_ANY_WAIT_IO \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) (RVT_S_WAIT_PIO | RVT_S_WAIT_TX | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) RVT_S_WAIT_DMA_DESC | RVT_S_WAIT_KMEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * Wait flags that would prevent send work requests from making progress.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define RVT_S_ANY_WAIT_SEND (RVT_S_WAIT_FENCE | RVT_S_WAIT_RDMAR | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) RVT_S_WAIT_RNR | RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) RVT_S_WAIT_PSN | RVT_S_WAIT_ACK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define RVT_S_ANY_WAIT (RVT_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* Number of bits to pay attention to in the opcode for checking qp type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define RVT_OPCODE_QP_MASK 0xE0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /* Flags for checking QP state (see ib_rvt_state_ops[]) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #define RVT_POST_SEND_OK 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #define RVT_POST_RECV_OK 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define RVT_PROCESS_RECV_OK 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #define RVT_PROCESS_SEND_OK 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define RVT_PROCESS_NEXT_SEND_OK 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #define RVT_FLUSH_SEND 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #define RVT_FLUSH_RECV 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #define RVT_PROCESS_OR_FLUSH_SEND \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) (RVT_PROCESS_SEND_OK | RVT_FLUSH_SEND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define RVT_SEND_OR_FLUSH_OR_RECV_OK \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) (RVT_PROCESS_SEND_OK | RVT_FLUSH_SEND | RVT_PROCESS_RECV_OK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * Internal send flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define RVT_SEND_RESERVE_USED IB_SEND_RESERVED_START
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define RVT_SEND_COMPLETION_ONLY (IB_SEND_RESERVED_START << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * rvt_ud_wr - IB UD work plus AH cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * @wr: valid IB work request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @attr: pointer to an allocated AH attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * Special case the UD WR so we can keep track of the AH attributes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * NOTE: This data structure is stricly ordered wr then attr. I.e the attr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * MUST come after wr. The ib_ud_wr is sized and copied in rvt_post_one_wr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * The copy assumes that wr is first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct rvt_ud_wr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct ib_ud_wr wr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct rdma_ah_attr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Send work request queue entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * The size of the sg_list is determined when the QP is created and stored
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * in qp->s_max_sge.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct rvt_swqe {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct ib_send_wr wr; /* don't use wr.sg_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct rvt_ud_wr ud_wr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct ib_reg_wr reg_wr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct ib_rdma_wr rdma_wr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct ib_atomic_wr atomic_wr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) u32 psn; /* first packet sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) u32 lpsn; /* last packet sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) u32 ssn; /* send sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) u32 length; /* total length of data in sg_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) void *priv; /* driver dependent field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct rvt_sge sg_list[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * struct rvt_krwq - kernel struct receive work request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * @p_lock: lock to protect producer of the kernel buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * @head: index of next entry to fill
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @c_lock:lock to protect consumer of the kernel buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @tail: index of next entry to pull
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @count: count is aproximate of total receive enteries posted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * @rvt_rwqe: struct of receive work request queue entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * This structure is used to contain the head pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * tail pointer and receive work queue entries for kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * mode user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct rvt_krwq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) spinlock_t p_lock; /* protect producer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) u32 head; /* new work requests posted to the head */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /* protect consumer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) spinlock_t c_lock ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u32 tail; /* receives pull requests from here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) u32 count; /* approx count of receive entries posted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct rvt_rwqe *curr_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct rvt_rwqe wq[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * rvt_get_swqe_ah - Return the pointer to the struct rvt_ah
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * @swqe: valid Send WQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static inline struct rvt_ah *rvt_get_swqe_ah(struct rvt_swqe *swqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return ibah_to_rvtah(swqe->ud_wr.wr.ah);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * rvt_get_swqe_ah_attr - Return the cached ah attribute information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * @swqe: valid Send WQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static inline struct rdma_ah_attr *rvt_get_swqe_ah_attr(struct rvt_swqe *swqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return swqe->ud_wr.attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * rvt_get_swqe_remote_qpn - Access the remote QPN value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * @swqe: valid Send WQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static inline u32 rvt_get_swqe_remote_qpn(struct rvt_swqe *swqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return swqe->ud_wr.wr.remote_qpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * rvt_get_swqe_remote_qkey - Acces the remote qkey value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * @swqe: valid Send WQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static inline u32 rvt_get_swqe_remote_qkey(struct rvt_swqe *swqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return swqe->ud_wr.wr.remote_qkey;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * rvt_get_swqe_pkey_index - Access the pkey index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * @swqe: valid Send WQE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static inline u16 rvt_get_swqe_pkey_index(struct rvt_swqe *swqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return swqe->ud_wr.wr.pkey_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct rvt_rq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct rvt_rwq *wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct rvt_krwq *kwq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) u32 size; /* size of RWQE array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) u8 max_sge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /* protect changes in this struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) spinlock_t lock ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * rvt_get_rq_count - count numbers of request work queue entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * in circular buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * @rq: data structure for request queue entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * @head: head indices of the circular buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * @tail: tail indices of the circular buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * Return - total number of entries in the Receive Queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static inline u32 rvt_get_rq_count(struct rvt_rq *rq, u32 head, u32 tail)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) u32 count = head - tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if ((s32)count < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) count += rq->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * This structure holds the information that the send tasklet needs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * to send a RDMA read response or atomic operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct rvt_ack_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct rvt_sge rdma_sge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) u64 atomic_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) u32 psn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) u32 lpsn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) u8 opcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) u8 sent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) void *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #define RC_QP_SCALING_INTERVAL 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) #define RVT_OPERATION_PRIV 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) #define RVT_OPERATION_ATOMIC 0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #define RVT_OPERATION_ATOMIC_SGE 0x00000004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) #define RVT_OPERATION_LOCAL 0x00000008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) #define RVT_OPERATION_USE_RESERVE 0x00000010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) #define RVT_OPERATION_IGN_RNR_CNT 0x00000020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) #define RVT_OPERATION_MAX (IB_WR_RESERVED10 + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * rvt_operation_params - op table entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * @length - the length to copy into the swqe entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * @qpt_support - a bit mask indicating QP type support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * @flags - RVT_OPERATION flags (see above)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * This supports table driven post send so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * the driver can have differing an potentially
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * different sets of operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) struct rvt_operation_params {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) size_t length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) u32 qpt_support;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * Common variables are protected by both r_rq.lock and s_lock in that order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * which only happens in modify_qp() or changing the QP 'state'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct rvt_qp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct ib_qp ibqp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) void *priv; /* Driver private data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /* read mostly fields above and below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct rdma_ah_attr remote_ah_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct rdma_ah_attr alt_ah_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct rvt_qp __rcu *next; /* link list for QPN hash table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct rvt_swqe *s_wq; /* send work queue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct rvt_mmap_info *ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) unsigned long timeout_jiffies; /* computed from timeout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) int srate_mbps; /* s_srate (below) converted to Mbit/s */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) pid_t pid; /* pid for user mode QPs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) u32 remote_qpn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) u32 qkey; /* QKEY for this QP (for UD or RD) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) u32 s_size; /* send work queue size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) u16 pmtu; /* decoded from path_mtu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) u8 log_pmtu; /* shift for pmtu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) u8 state; /* QP state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) u8 allowed_ops; /* high order bits of allowed opcodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) u8 qp_access_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) u8 alt_timeout; /* Alternate path timeout for this QP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) u8 timeout; /* Timeout for this QP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) u8 s_srate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) u8 s_mig_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) u8 port_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) u8 s_pkey_index; /* PKEY index to use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) u8 s_alt_pkey_index; /* Alternate path PKEY index to use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) u8 s_retry_cnt; /* number of times to retry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) u8 s_rnr_retry_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) u8 s_max_sge; /* size of s_wq->sg_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) u8 s_draining;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) /* start of read/write fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) atomic_t refcount ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) wait_queue_head_t wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct rvt_ack_entry *s_ack_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) struct rvt_sge_state s_rdma_read_sge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) spinlock_t r_lock ____cacheline_aligned_in_smp; /* used for APM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) u32 r_psn; /* expected rcv packet sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) unsigned long r_aflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) u64 r_wr_id; /* ID for current receive WQE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) u32 r_ack_psn; /* PSN for next ACK or atomic ACK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) u32 r_len; /* total length of r_sge */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) u32 r_rcv_len; /* receive data len processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) u32 r_msn; /* message sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) u8 r_state; /* opcode of last packet received */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) u8 r_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) u8 r_head_ack_queue; /* index into s_ack_queue[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) u8 r_adefered; /* defered ack count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) struct list_head rspwait; /* link for waiting to respond */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct rvt_sge_state r_sge; /* current receive data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) struct rvt_rq r_rq; /* receive work queue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /* post send line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) spinlock_t s_hlock ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) u32 s_head; /* new entries added here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) u32 s_next_psn; /* PSN for next request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) u32 s_avail; /* number of entries avail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) u32 s_ssn; /* SSN of tail entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) atomic_t s_reserved_used; /* reserved entries in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) spinlock_t s_lock ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) u32 s_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) struct rvt_sge_state *s_cur_sge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) struct rvt_swqe *s_wqe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) struct rvt_sge_state s_sge; /* current send request data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) struct rvt_mregion *s_rdma_mr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) u32 s_len; /* total length of s_sge */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) u32 s_rdma_read_len; /* total length of s_rdma_read_sge */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) u32 s_last_psn; /* last response PSN processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) u32 s_sending_psn; /* lowest PSN that is being sent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) u32 s_sending_hpsn; /* highest PSN that is being sent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) u32 s_psn; /* current packet sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) u32 s_ack_rdma_psn; /* PSN for sending RDMA read responses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) u32 s_ack_psn; /* PSN for acking sends and RDMA writes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) u32 s_tail; /* next entry to process */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) u32 s_cur; /* current work queue entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) u32 s_acked; /* last un-ACK'ed entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) u32 s_last; /* last completed entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) u32 s_lsn; /* limit sequence number (credit) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) u32 s_ahgpsn; /* set to the psn in the copy of the header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) u16 s_cur_size; /* size of send packet in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) u16 s_rdma_ack_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) u8 s_hdrwords; /* size of s_hdr in 32 bit words */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) s8 s_ahgidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) u8 s_state; /* opcode of last packet sent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) u8 s_ack_state; /* opcode of packet to ACK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) u8 s_nak_state; /* non-zero if NAK is pending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) u8 r_nak_state; /* non-zero if NAK is pending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) u8 s_retry; /* requester retry counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) u8 s_rnr_retry; /* requester RNR retry counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) u8 s_tail_ack_queue; /* index into s_ack_queue[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) u8 s_acked_ack_queue; /* index into s_ack_queue[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct rvt_sge_state s_ack_rdma_sge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) struct timer_list s_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct hrtimer s_rnr_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) atomic_t local_ops_pending; /* number of fast_reg/local_inv reqs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * This sge list MUST be last. Do not add anything below here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct rvt_sge r_sg_list[] /* verified SGEs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ____cacheline_aligned_in_smp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct rvt_srq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct ib_srq ibsrq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct rvt_rq rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) struct rvt_mmap_info *ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /* send signal when number of RWQEs < limit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) u32 limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) static inline struct rvt_srq *ibsrq_to_rvtsrq(struct ib_srq *ibsrq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return container_of(ibsrq, struct rvt_srq, ibsrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) static inline struct rvt_qp *ibqp_to_rvtqp(struct ib_qp *ibqp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return container_of(ibqp, struct rvt_qp, ibqp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) #define RVT_QPN_MAX BIT(24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) #define RVT_QPNMAP_ENTRIES (RVT_QPN_MAX / PAGE_SIZE / BITS_PER_BYTE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) #define RVT_BITS_PER_PAGE (PAGE_SIZE * BITS_PER_BYTE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) #define RVT_BITS_PER_PAGE_MASK (RVT_BITS_PER_PAGE - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) #define RVT_QPN_MASK IB_QPN_MASK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * QPN-map pages start out as NULL, they get allocated upon
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * first use and are never deallocated. This way,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * large bitmaps are not allocated unless large numbers of QPs are used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct rvt_qpn_map {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) void *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct rvt_qpn_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) spinlock_t lock; /* protect changes to the qp table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) unsigned flags; /* flags for QP0/1 allocated for each port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) u32 last; /* last QP number allocated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) u32 nmaps; /* size of the map table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) u16 limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) u8 incr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) /* bit map of free QP numbers other than 0/1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct rvt_qpn_map map[RVT_QPNMAP_ENTRIES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) struct rvt_qp_ibdev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) u32 qp_table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) u32 qp_table_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct rvt_qp __rcu **qp_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) spinlock_t qpt_lock; /* qptable lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) struct rvt_qpn_table qpn_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) * There is one struct rvt_mcast for each multicast GID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * All attached QPs are then stored as a list of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) * struct rvt_mcast_qp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) struct rvt_mcast_qp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct rvt_qp *qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) struct rvt_mcast_addr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) union ib_gid mgid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) u16 lid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) struct rvt_mcast {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) struct rb_node rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct rvt_mcast_addr mcast_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct list_head qp_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) wait_queue_head_t wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) atomic_t refcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) int n_attached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * Since struct rvt_swqe is not a fixed size, we can't simply index into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * struct rvt_qp.s_wq. This function does the array index computation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) static inline struct rvt_swqe *rvt_get_swqe_ptr(struct rvt_qp *qp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) unsigned n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) return (struct rvt_swqe *)((char *)qp->s_wq +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) (sizeof(struct rvt_swqe) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) qp->s_max_sge *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) sizeof(struct rvt_sge)) * n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * Since struct rvt_rwqe is not a fixed size, we can't simply index into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * struct rvt_rwq.wq. This function does the array index computation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) static inline struct rvt_rwqe *rvt_get_rwqe_ptr(struct rvt_rq *rq, unsigned n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return (struct rvt_rwqe *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ((char *)rq->kwq->curr_wq +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) (sizeof(struct rvt_rwqe) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) rq->max_sge * sizeof(struct ib_sge)) * n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * rvt_is_user_qp - return if this is user mode QP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * @qp - the target QP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) static inline bool rvt_is_user_qp(struct rvt_qp *qp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) return !!qp->pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * rvt_get_qp - get a QP reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * @qp - the QP to hold
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) static inline void rvt_get_qp(struct rvt_qp *qp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) atomic_inc(&qp->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * rvt_put_qp - release a QP reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * @qp - the QP to release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static inline void rvt_put_qp(struct rvt_qp *qp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (qp && atomic_dec_and_test(&qp->refcount))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) wake_up(&qp->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * rvt_put_swqe - drop mr refs held by swqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * @wqe - the send wqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) * This drops any mr references held by the swqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) static inline void rvt_put_swqe(struct rvt_swqe *wqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) for (i = 0; i < wqe->wr.num_sge; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) struct rvt_sge *sge = &wqe->sg_list[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) rvt_put_mr(sge->mr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) * rvt_qp_wqe_reserve - reserve operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * @qp - the rvt qp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * @wqe - the send wqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) * This routine used in post send to record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) * a wqe relative reserved operation use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) static inline void rvt_qp_wqe_reserve(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) struct rvt_qp *qp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) struct rvt_swqe *wqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) atomic_inc(&qp->s_reserved_used);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * rvt_qp_wqe_unreserve - clean reserved operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * @qp - the rvt qp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * @flags - send wqe flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * This decrements the reserve use count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * This call MUST precede the change to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * s_last to insure that post send sees a stable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * s_avail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * An smp_mp__after_atomic() is used to insure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * the compiler does not juggle the order of the s_last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * ring index and the decrementing of s_reserved_used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static inline void rvt_qp_wqe_unreserve(struct rvt_qp *qp, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (unlikely(flags & RVT_SEND_RESERVE_USED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) atomic_dec(&qp->s_reserved_used);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) /* insure no compiler re-order up to s_last change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) smp_mb__after_atomic();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) extern const enum ib_wc_opcode ib_rvt_wc_opcode[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) * Compare the lower 24 bits of the msn values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * Returns an integer <, ==, or > than zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) static inline int rvt_cmp_msn(u32 a, u32 b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return (((int)a) - ((int)b)) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) __be32 rvt_compute_aeth(struct rvt_qp *qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) void rvt_get_credit(struct rvt_qp *qp, u32 aeth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) u32 rvt_restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe, u32 len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * rvt_div_round_up_mtu - round up divide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * @qp - the qp pair
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * @len - the length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) * Perform a shift based mtu round up divide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) static inline u32 rvt_div_round_up_mtu(struct rvt_qp *qp, u32 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return (len + qp->pmtu - 1) >> qp->log_pmtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * @qp - the qp pair
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) * @len - the length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * Perform a shift based mtu divide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) static inline u32 rvt_div_mtu(struct rvt_qp *qp, u32 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) return len >> qp->log_pmtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) * rvt_timeout_to_jiffies - Convert a ULP timeout input into jiffies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) * @timeout - timeout input(0 - 31).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * Return a timeout value in jiffies.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) static inline unsigned long rvt_timeout_to_jiffies(u8 timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (timeout > 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) timeout = 31;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) return usecs_to_jiffies(1U << timeout) * 4096UL / 1000UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * rvt_lookup_qpn - return the QP with the given QPN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * @ibp: the ibport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * @qpn: the QP number to look up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) * The caller must hold the rcu_read_lock(), and keep the lock until
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) * the returned qp is no longer in use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) static inline struct rvt_qp *rvt_lookup_qpn(struct rvt_dev_info *rdi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) struct rvt_ibport *rvp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) u32 qpn) __must_hold(RCU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) struct rvt_qp *qp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) if (unlikely(qpn <= 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) qp = rcu_dereference(rvp->qp[qpn]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) u32 n = hash_32(qpn, rdi->qp_dev->qp_table_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) for (qp = rcu_dereference(rdi->qp_dev->qp_table[n]); qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) qp = rcu_dereference(qp->next))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) if (qp->ibqp.qp_num == qpn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) return qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) * rvt_mod_retry_timer - mod a retry timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * @qp - the QP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) * @shift - timeout shift to wait for multiple packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) * Modify a potentially already running retry timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) static inline void rvt_mod_retry_timer_ext(struct rvt_qp *qp, u8 shift)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) struct ib_qp *ibqp = &qp->ibqp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) struct rvt_dev_info *rdi = ib_to_rvt(ibqp->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) lockdep_assert_held(&qp->s_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) qp->s_flags |= RVT_S_TIMER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) /* 4.096 usec. * (1 << qp->timeout) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) mod_timer(&qp->s_timer, jiffies + rdi->busy_jiffies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) (qp->timeout_jiffies << shift));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) static inline void rvt_mod_retry_timer(struct rvt_qp *qp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) return rvt_mod_retry_timer_ext(qp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) * rvt_put_qp_swqe - drop refs held by swqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) * @qp: the send qp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) * @wqe: the send wqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) * This drops any references held by the swqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) static inline void rvt_put_qp_swqe(struct rvt_qp *qp, struct rvt_swqe *wqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) rvt_put_swqe(wqe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) if (qp->allowed_ops == IB_OPCODE_UD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) rdma_destroy_ah_attr(wqe->ud_wr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) * rvt_qp_sqwe_incr - increment ring index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) * @qp: the qp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) * @val: the starting value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) * Return: the new value wrapping as appropriate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) static inline u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) rvt_qp_swqe_incr(struct rvt_qp *qp, u32 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (++val >= qp->s_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) * rvt_recv_cq - add a new entry to completion queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) * by receive queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * @qp: receive queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * @wc: work completion entry to add
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * @solicited: true if @entry is solicited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) * This is wrapper function for rvt_enter_cq function call by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) * receive queue. If rvt_cq_enter return false, it means cq is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * full and the qp is put into error state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) static inline void rvt_recv_cq(struct rvt_qp *qp, struct ib_wc *wc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) bool solicited)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct rvt_cq *cq = ibcq_to_rvtcq(qp->ibqp.recv_cq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) if (unlikely(!rvt_cq_enter(cq, wc, solicited)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) rvt_error_qp(qp, IB_WC_LOC_QP_OP_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) * rvt_send_cq - add a new entry to completion queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) * by send queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) * @qp: send queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) * @wc: work completion entry to add
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) * @solicited: true if @entry is solicited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * This is wrapper function for rvt_enter_cq function call by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) * send queue. If rvt_cq_enter return false, it means cq is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) * full and the qp is put into error state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) static inline void rvt_send_cq(struct rvt_qp *qp, struct ib_wc *wc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) bool solicited)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) struct rvt_cq *cq = ibcq_to_rvtcq(qp->ibqp.send_cq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) if (unlikely(!rvt_cq_enter(cq, wc, solicited)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) rvt_error_qp(qp, IB_WC_LOC_QP_OP_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) * rvt_qp_complete_swqe - insert send completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * @qp - the qp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) * @wqe - the send wqe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) * @opcode - wc operation (driver dependent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) * @status - completion status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) * Update the s_last information, and then insert a send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * completion into the completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) * queue if the qp indicates it should be done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * See IBTA 10.7.3.1 for info on completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * control.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * Return: new last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) static inline u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) rvt_qp_complete_swqe(struct rvt_qp *qp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) struct rvt_swqe *wqe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) enum ib_wc_opcode opcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) enum ib_wc_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) bool need_completion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) u64 wr_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) u32 byte_len, last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) int flags = wqe->wr.send_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) rvt_qp_wqe_unreserve(qp, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) rvt_put_qp_swqe(qp, wqe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) need_completion =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) !(flags & RVT_SEND_RESERVE_USED) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) (!(qp->s_flags & RVT_S_SIGNAL_REQ_WR) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) (flags & IB_SEND_SIGNALED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) status != IB_WC_SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) if (need_completion) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) wr_id = wqe->wr.wr_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) byte_len = wqe->length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) /* above fields required before writing s_last */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) last = rvt_qp_swqe_incr(qp, qp->s_last);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) /* see rvt_qp_is_avail() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) smp_store_release(&qp->s_last, last);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) if (need_completion) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) struct ib_wc w = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) .wr_id = wr_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) .status = status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) .opcode = opcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) .qp = &qp->ibqp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) .byte_len = byte_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) rvt_send_cq(qp, &w, status != IB_WC_SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) return last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) extern const int ib_rvt_state_ops[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) struct rvt_dev_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) int rvt_get_rwqe(struct rvt_qp *qp, bool wr_id_only);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) void rvt_comm_est(struct rvt_qp *qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) void rvt_rc_error(struct rvt_qp *qp, enum ib_wc_status err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) unsigned long rvt_rnr_tbl_to_usec(u32 index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) enum hrtimer_restart rvt_rc_rnr_retry(struct hrtimer *t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) void rvt_add_rnr_timer(struct rvt_qp *qp, u32 aeth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) void rvt_del_timers_sync(struct rvt_qp *qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) void rvt_stop_rc_timers(struct rvt_qp *qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) void rvt_add_retry_timer_ext(struct rvt_qp *qp, u8 shift);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) static inline void rvt_add_retry_timer(struct rvt_qp *qp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) rvt_add_retry_timer_ext(qp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) void rvt_copy_sge(struct rvt_qp *qp, struct rvt_sge_state *ss,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) void *data, u32 length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) bool release, bool copy_last);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) void rvt_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) enum ib_wc_status status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) void rvt_ruc_loopback(struct rvt_qp *qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) * struct rvt_qp_iter - the iterator for QPs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) * @qp - the current QP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) * This structure defines the current iterator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) * state for sequenced access to all QPs relative
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) * to an rvt_dev_info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct rvt_qp_iter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) struct rvt_qp *qp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) /* private: backpointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) struct rvt_dev_info *rdi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) /* private: callback routine */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) void (*cb)(struct rvt_qp *qp, u64 v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) /* private: for arg to callback routine */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) u64 v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) /* private: number of SMI,GSI QPs for device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) int specials;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) /* private: current iterator index */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) * ib_cq_tail - Return tail index of cq buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) * @send_cq - The cq for send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) * This is called in qp_iter_print to get tail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) * of cq buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) static inline u32 ib_cq_tail(struct ib_cq *send_cq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) struct rvt_cq *cq = ibcq_to_rvtcq(send_cq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) return ibcq_to_rvtcq(send_cq)->ip ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) RDMA_READ_UAPI_ATOMIC(cq->queue->tail) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) ibcq_to_rvtcq(send_cq)->kqueue->tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) * ib_cq_head - Return head index of cq buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) * @send_cq - The cq for send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) * This is called in qp_iter_print to get head
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) * of cq buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) static inline u32 ib_cq_head(struct ib_cq *send_cq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) struct rvt_cq *cq = ibcq_to_rvtcq(send_cq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) return ibcq_to_rvtcq(send_cq)->ip ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) RDMA_READ_UAPI_ATOMIC(cq->queue->head) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) ibcq_to_rvtcq(send_cq)->kqueue->head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) * rvt_free_rq - free memory allocated for rvt_rq struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) * @rvt_rq: request queue data structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) * This function should only be called if the rvt_mmap_info()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) * has not succeeded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) static inline void rvt_free_rq(struct rvt_rq *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) kvfree(rq->kwq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) rq->kwq = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) vfree(rq->wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) rq->wq = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) * rvt_to_iport - Get the ibport pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) * @qp: the qp pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) * This function returns the ibport pointer from the qp pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) static inline struct rvt_ibport *rvt_to_iport(struct rvt_qp *qp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) struct rvt_dev_info *rdi = ib_to_rvt(qp->ibqp.device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) return rdi->ports[qp->port_num - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) * rvt_rc_credit_avail - Check if there are enough RC credits for the request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) * @qp: the qp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) * @wqe: the request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) * This function returns false when there are not enough credits for the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) * request and true otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) static inline bool rvt_rc_credit_avail(struct rvt_qp *qp, struct rvt_swqe *wqe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) lockdep_assert_held(&qp->s_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) if (!(qp->s_flags & RVT_S_UNLIMITED_CREDIT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) rvt_cmp_msn(wqe->ssn, qp->s_lsn + 1) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) struct rvt_ibport *rvp = rvt_to_iport(qp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) qp->s_flags |= RVT_S_WAIT_SSN_CREDIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) rvp->n_rc_crwaits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) struct rvt_qp_iter *rvt_qp_iter_init(struct rvt_dev_info *rdi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) u64 v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) void (*cb)(struct rvt_qp *qp, u64 v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) int rvt_qp_iter_next(struct rvt_qp_iter *iter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) void rvt_qp_iter(struct rvt_dev_info *rdi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) u64 v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) void (*cb)(struct rvt_qp *qp, u64 v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) void rvt_qp_mr_clean(struct rvt_qp *qp, u32 lkey);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) #endif /* DEF_RDMAVT_INCQP_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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