#define QED_IWARP_ORD_DEFAULT 32
#define QED_IWARP_IRD_DEFAULT 32
+#define QED_IWARP_MAX_FW_MSS 4120
+
+#define QED_EP_SIG 0xecabcdef
+
+struct mpa_v2_hdr {
+ __be16 ird;
+ __be16 ord;
+};
+
+#define MPA_V2_PEER2PEER_MODEL 0x8000
+#define MPA_V2_SEND_RTR 0x4000 /* on ird */
+#define MPA_V2_READ_RTR 0x4000 /* on ord */
+#define MPA_V2_WRITE_RTR 0x8000
+#define MPA_V2_IRD_ORD_MASK 0x3FFF
+
+#define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
+
+#define QED_IWARP_INVALID_TCP_CID 0xffffffff
#define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024)
#define QED_IWARP_RCV_WND_SIZE_MIN (64 * 1024)
+#define TIMESTAMP_HEADER_SIZE (12)
+
#define QED_IWARP_TS_EN BIT(0)
+#define QED_IWARP_DA_EN BIT(1)
#define QED_IWARP_PARAM_CRC_NEEDED (1)
#define QED_IWARP_PARAM_P2P (1)
dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
dev->max_qp = min_t(u32,
IWARP_MAX_QPS,
- p_hwfn->p_rdma_info->num_qps);
+ p_hwfn->p_rdma_info->num_qps) -
+ QED_IWARP_PREALLOC_CNT;
dev->max_cq = dev->max_qp;
p_hwfn->b_rdma_enabled_in_prs = true;
}
+/* We have two cid maps, one for tcp which should be used only from passive
+ * syn processing and replacing a pre-allocated ep in the list. The second
+ * for active tcp and for QPs.
+ */
static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
{
cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
spin_lock_bh(&p_hwfn->p_rdma_info->lock);
- qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
+
+ if (cid < QED_IWARP_PREALLOC_CNT)
+ qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
+ cid);
+ else
+ qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
+
spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
}
return rc;
}
+static void qed_iwarp_set_tcp_cid(struct qed_hwfn *p_hwfn, u32 cid)
+{
+ cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto);
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->lock);
+ qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, cid);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
+}
+
+/* This function allocates a cid for passive tcp (called from syn receive)
+ * the reason it's separate from the regular cid allocation is because it
+ * is assured that these cids already have ilt allocated. They are preallocated
+ * to ensure that we won't need to allocate memory during syn processing
+ */
+static int qed_iwarp_alloc_tcp_cid(struct qed_hwfn *p_hwfn, u32 *cid)
+{
+ int rc;
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->lock);
+
+ rc = qed_rdma_bmap_alloc_id(p_hwfn,
+ &p_hwfn->p_rdma_info->tcp_cid_map, cid);
+
+ spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
+
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "can't allocate iwarp tcp cid max-count=%d\n",
+ p_hwfn->p_rdma_info->tcp_cid_map.max_count);
+
+ *cid = QED_IWARP_INVALID_TCP_CID;
+ return rc;
+ }
+
+ *cid += qed_cxt_get_proto_cid_start(p_hwfn,
+ p_hwfn->p_rdma_info->proto);
+ return 0;
+}
+
int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
struct qed_rdma_qp *qp,
struct qed_rdma_create_qp_out_params *out_params)
return rc;
}
+static void qed_iwarp_destroy_ep(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ep *ep,
+ bool remove_from_active_list)
+{
+ dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+ sizeof(*ep->ep_buffer_virt),
+ ep->ep_buffer_virt, ep->ep_buffer_phys);
+
+ if (remove_from_active_list) {
+ spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ list_del(&ep->list_entry);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ }
+
+ if (ep->qp)
+ ep->qp->ep = NULL;
+
+ kfree(ep);
+}
+
int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
{
int rc = 0;
return rc;
}
+static int
+qed_iwarp_create_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep **ep_out)
+{
+ struct qed_iwarp_ep *ep;
+ int rc;
+
+ ep = kzalloc(sizeof(*ep), GFP_KERNEL);
+ if (!ep)
+ return -ENOMEM;
+
+ ep->state = QED_IWARP_EP_INIT;
+
+ ep->ep_buffer_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
+ sizeof(*ep->ep_buffer_virt),
+ &ep->ep_buffer_phys,
+ GFP_KERNEL);
+ if (!ep->ep_buffer_virt) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ ep->sig = QED_EP_SIG;
+
+ *ep_out = ep;
+
+ return 0;
+
+err:
+ kfree(ep);
+ return rc;
+}
+
+static void
+qed_iwarp_print_tcp_ramrod(struct qed_hwfn *p_hwfn,
+ struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
+{
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "local_mac=%x %x %x, remote_mac=%x %x %x\n",
+ p_tcp_ramrod->tcp.local_mac_addr_lo,
+ p_tcp_ramrod->tcp.local_mac_addr_mid,
+ p_tcp_ramrod->tcp.local_mac_addr_hi,
+ p_tcp_ramrod->tcp.remote_mac_addr_lo,
+ p_tcp_ramrod->tcp.remote_mac_addr_mid,
+ p_tcp_ramrod->tcp.remote_mac_addr_hi);
+
+ if (p_tcp_ramrod->tcp.ip_version == TCP_IPV4) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "local_ip=%pI4h:%x, remote_ip=%pI4h%x, vlan=%x\n",
+ p_tcp_ramrod->tcp.local_ip,
+ p_tcp_ramrod->tcp.local_port,
+ p_tcp_ramrod->tcp.remote_ip,
+ p_tcp_ramrod->tcp.remote_port,
+ p_tcp_ramrod->tcp.vlan_id);
+ } else {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "local_ip=%pI6h:%x, remote_ip=%pI6h:%x, vlan=%x\n",
+ p_tcp_ramrod->tcp.local_ip,
+ p_tcp_ramrod->tcp.local_port,
+ p_tcp_ramrod->tcp.remote_ip,
+ p_tcp_ramrod->tcp.remote_port,
+ p_tcp_ramrod->tcp.vlan_id);
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "flow_label=%x, ttl=%x, tos_or_tc=%x, mss=%x, rcv_wnd_scale=%x, connect_mode=%x, flags=%x\n",
+ p_tcp_ramrod->tcp.flow_label,
+ p_tcp_ramrod->tcp.ttl,
+ p_tcp_ramrod->tcp.tos_or_tc,
+ p_tcp_ramrod->tcp.mss,
+ p_tcp_ramrod->tcp.rcv_wnd_scale,
+ p_tcp_ramrod->tcp.connect_mode,
+ p_tcp_ramrod->tcp.flags);
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "syn_ip_payload_length=%x, lo=%x, hi=%x\n",
+ p_tcp_ramrod->tcp.syn_ip_payload_length,
+ p_tcp_ramrod->tcp.syn_phy_addr_lo,
+ p_tcp_ramrod->tcp.syn_phy_addr_hi);
+}
+
+static int
+qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
+{
+ struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+ struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
+ struct tcp_offload_params_opt2 *tcp;
+ struct qed_sp_init_data init_data;
+ struct qed_spq_entry *p_ent;
+ dma_addr_t async_output_phys;
+ dma_addr_t in_pdata_phys;
+ u16 physical_q;
+ u8 tcp_flags;
+ int rc;
+ int i;
+
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = ep->tcp_cid;
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = QED_SPQ_MODE_CB;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
+ PROTOCOLID_IWARP, &init_data);
+ if (rc)
+ return rc;
+
+ p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
+
+ in_pdata_phys = ep->ep_buffer_phys +
+ offsetof(struct qed_iwarp_ep_memory, in_pdata);
+ DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr,
+ in_pdata_phys);
+
+ p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
+ cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
+
+ async_output_phys = ep->ep_buffer_phys +
+ offsetof(struct qed_iwarp_ep_memory, async_output);
+ DMA_REGPAIR_LE(p_tcp_ramrod->iwarp.async_eqe_output_buf,
+ async_output_phys);
+
+ p_tcp_ramrod->iwarp.handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
+ p_tcp_ramrod->iwarp.handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
+
+ physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
+ p_tcp_ramrod->iwarp.physical_q0 = cpu_to_le16(physical_q);
+ physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
+ p_tcp_ramrod->iwarp.physical_q1 = cpu_to_le16(physical_q);
+ p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
+
+ tcp = &p_tcp_ramrod->tcp;
+ qed_set_fw_mac_addr(&tcp->remote_mac_addr_hi,
+ &tcp->remote_mac_addr_mid,
+ &tcp->remote_mac_addr_lo, ep->remote_mac_addr);
+ qed_set_fw_mac_addr(&tcp->local_mac_addr_hi, &tcp->local_mac_addr_mid,
+ &tcp->local_mac_addr_lo, ep->local_mac_addr);
+
+ tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
+
+ tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
+ tcp->flags = 0;
+ SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
+ !!(tcp_flags & QED_IWARP_TS_EN));
+
+ SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
+ !!(tcp_flags & QED_IWARP_DA_EN));
+
+ tcp->ip_version = ep->cm_info.ip_version;
+
+ for (i = 0; i < 4; i++) {
+ tcp->remote_ip[i] = cpu_to_le32(ep->cm_info.remote_ip[i]);
+ tcp->local_ip[i] = cpu_to_le32(ep->cm_info.local_ip[i]);
+ }
+
+ tcp->remote_port = cpu_to_le16(ep->cm_info.remote_port);
+ tcp->local_port = cpu_to_le16(ep->cm_info.local_port);
+ tcp->mss = cpu_to_le16(ep->mss);
+ tcp->flow_label = 0;
+ tcp->ttl = 0x40;
+ tcp->tos_or_tc = 0;
+
+ tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
+ tcp->connect_mode = ep->connect_mode;
+
+ if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
+ tcp->syn_ip_payload_length =
+ cpu_to_le16(ep->syn_ip_payload_length);
+ tcp->syn_phy_addr_hi = DMA_HI_LE(ep->syn_phy_addr);
+ tcp->syn_phy_addr_lo = DMA_LO_LE(ep->syn_phy_addr);
+ }
+
+ qed_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
+
+ rc = qed_spq_post(p_hwfn, p_ent, NULL);
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "EP(0x%x) Offload completed rc=%d\n", ep->tcp_cid, rc);
+
+ return rc;
+}
+
+static void
+qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
+{
+ struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+ struct qed_iwarp_cm_event_params params;
+ struct mpa_v2_hdr *mpa_v2;
+ union async_output *async_data;
+ u16 mpa_ord, mpa_ird;
+ u8 mpa_hdr_size = 0;
+ u8 mpa_rev;
+
+ async_data = &ep->ep_buffer_virt->async_output;
+
+ mpa_rev = async_data->mpa_request.mpa_handshake_mode;
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "private_data_len=%x handshake_mode=%x private_data=(%x)\n",
+ async_data->mpa_request.ulp_data_len,
+ mpa_rev, *((u32 *)((u8 *)ep->ep_buffer_virt->in_pdata)));
+
+ if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
+ /* Read ord/ird values from private data buffer */
+ mpa_v2 = (struct mpa_v2_hdr *)ep->ep_buffer_virt->in_pdata;
+ mpa_hdr_size = sizeof(*mpa_v2);
+
+ mpa_ord = ntohs(mpa_v2->ord);
+ mpa_ird = ntohs(mpa_v2->ird);
+
+ /* Temprary store in cm_info incoming ord/ird requested, later
+ * replace with negotiated value during accept
+ */
+ ep->cm_info.ord = (u8)min_t(u16,
+ (mpa_ord & MPA_V2_IRD_ORD_MASK),
+ QED_IWARP_ORD_DEFAULT);
+
+ ep->cm_info.ird = (u8)min_t(u16,
+ (mpa_ird & MPA_V2_IRD_ORD_MASK),
+ QED_IWARP_IRD_DEFAULT);
+
+ /* Peer2Peer negotiation */
+ ep->rtr_type = MPA_RTR_TYPE_NONE;
+ if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
+ if (mpa_ord & MPA_V2_WRITE_RTR)
+ ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
+
+ if (mpa_ord & MPA_V2_READ_RTR)
+ ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
+
+ if (mpa_ird & MPA_V2_SEND_RTR)
+ ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
+
+ ep->rtr_type &= iwarp_info->rtr_type;
+
+ /* if we're left with no match send our capabilities */
+ if (ep->rtr_type == MPA_RTR_TYPE_NONE)
+ ep->rtr_type = iwarp_info->rtr_type;
+ }
+
+ ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
+ } else {
+ ep->cm_info.ord = QED_IWARP_ORD_DEFAULT;
+ ep->cm_info.ird = QED_IWARP_IRD_DEFAULT;
+ ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
+ mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
+ async_data->mpa_request.ulp_data_len, mpa_hdr_size);
+
+ /* Strip mpa v2 hdr from private data before sending to upper layer */
+ ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
+
+ ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len -
+ mpa_hdr_size;
+
+ params.event = QED_IWARP_EVENT_MPA_REQUEST;
+ params.cm_info = &ep->cm_info;
+ params.ep_context = ep;
+ params.status = 0;
+
+ ep->state = QED_IWARP_EP_MPA_REQ_RCVD;
+ ep->event_cb(ep->cb_context, ¶ms);
+}
+
+static int
+qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
+{
+ struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
+ struct qed_sp_init_data init_data;
+ dma_addr_t async_output_phys;
+ struct qed_spq_entry *p_ent;
+ dma_addr_t out_pdata_phys;
+ dma_addr_t in_pdata_phys;
+ struct qed_rdma_qp *qp;
+ bool reject;
+ int rc;
+
+ if (!ep)
+ return -EINVAL;
+
+ qp = ep->qp;
+ reject = !qp;
+
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = reject ? ep->tcp_cid : qp->icid;
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+
+ init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
+ PROTOCOLID_IWARP, &init_data);
+ if (rc)
+ return rc;
+
+ p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
+ out_pdata_phys = ep->ep_buffer_phys +
+ offsetof(struct qed_iwarp_ep_memory, out_pdata);
+ DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr,
+ out_pdata_phys);
+ p_mpa_ramrod->common.outgoing_ulp_buffer.len =
+ ep->cm_info.private_data_len;
+ p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
+
+ p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
+ p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
+
+ p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
+
+ in_pdata_phys = ep->ep_buffer_phys +
+ offsetof(struct qed_iwarp_ep_memory, in_pdata);
+ p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
+ DMA_REGPAIR_LE(p_mpa_ramrod->incoming_ulp_buffer.addr,
+ in_pdata_phys);
+ p_mpa_ramrod->incoming_ulp_buffer.len =
+ cpu_to_le16(sizeof(ep->ep_buffer_virt->in_pdata));
+ async_output_phys = ep->ep_buffer_phys +
+ offsetof(struct qed_iwarp_ep_memory, async_output);
+ DMA_REGPAIR_LE(p_mpa_ramrod->async_eqe_output_buf,
+ async_output_phys);
+ p_mpa_ramrod->handle_for_async.hi = cpu_to_le32(PTR_HI(ep));
+ p_mpa_ramrod->handle_for_async.lo = cpu_to_le32(PTR_LO(ep));
+
+ if (!reject) {
+ DMA_REGPAIR_LE(p_mpa_ramrod->shared_queue_addr,
+ qp->shared_queue_phys_addr);
+ p_mpa_ramrod->stats_counter_id =
+ RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
+ } else {
+ p_mpa_ramrod->common.reject = 1;
+ }
+
+ p_mpa_ramrod->mode = ep->mpa_rev;
+ SET_FIELD(p_mpa_ramrod->rtr_pref,
+ IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
+
+ ep->state = QED_IWARP_EP_MPA_OFFLOADED;
+ rc = qed_spq_post(p_hwfn, p_ent, NULL);
+ if (!reject)
+ ep->cid = qp->icid; /* Now they're migrated. */
+
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n",
+ reject ? 0xffff : qp->icid,
+ ep->tcp_cid,
+ rc,
+ ep->cm_info.ird,
+ ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
+ return rc;
+}
+
+static void
+qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
+{
+ ep->state = QED_IWARP_EP_INIT;
+ if (ep->qp)
+ ep->qp->ep = NULL;
+ ep->qp = NULL;
+ memset(&ep->cm_info, 0, sizeof(ep->cm_info));
+
+ if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
+ /* We don't care about the return code, it's ok if tcp_cid
+ * remains invalid...in this case we'll defer allocation
+ */
+ qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
+ }
+ spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+
+ list_del(&ep->list_entry);
+ list_add_tail(&ep->list_entry,
+ &p_hwfn->p_rdma_info->iwarp.ep_free_list);
+
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+}
+
+#define QED_IWARP_CONNECT_MODE_STRING(ep) \
+ ((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
+
+/* Called as a result of the event:
+ * IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
+ */
+static void
+qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ep *ep, u8 fw_return_code)
+{
+ struct qed_iwarp_cm_event_params params;
+
+ params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
+ ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
+
+ params.cm_info = &ep->cm_info;
+
+ params.ep_context = ep;
+
+ ep->state = QED_IWARP_EP_CLOSED;
+
+ switch (fw_return_code) {
+ case RDMA_RETURN_OK:
+ ep->qp->max_rd_atomic_req = ep->cm_info.ord;
+ ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
+ qed_iwarp_modify_qp(p_hwfn, ep->qp, QED_IWARP_QP_STATE_RTS, 1);
+ ep->state = QED_IWARP_EP_ESTABLISHED;
+ params.status = 0;
+ break;
+ default:
+ params.status = -ECONNRESET;
+ break;
+ }
+
+ ep->event_cb(ep->cb_context, ¶ms);
+}
+
+static void
+qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ep *ep, u8 *mpa_data_size)
+{
+ struct mpa_v2_hdr *mpa_v2_params;
+ u16 mpa_ird, mpa_ord;
+
+ *mpa_data_size = 0;
+ if (MPA_REV2(ep->mpa_rev)) {
+ mpa_v2_params =
+ (struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
+ *mpa_data_size = sizeof(*mpa_v2_params);
+
+ mpa_ird = (u16)ep->cm_info.ird;
+ mpa_ord = (u16)ep->cm_info.ord;
+
+ if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
+ mpa_ird |= MPA_V2_PEER2PEER_MODEL;
+
+ if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
+ mpa_ird |= MPA_V2_SEND_RTR;
+
+ if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
+ mpa_ord |= MPA_V2_WRITE_RTR;
+
+ if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
+ mpa_ord |= MPA_V2_READ_RTR;
+ }
+
+ mpa_v2_params->ird = htons(mpa_ird);
+ mpa_v2_params->ord = htons(mpa_ord);
+
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
+ mpa_v2_params->ird,
+ mpa_v2_params->ord,
+ *((u32 *)mpa_v2_params),
+ mpa_ord & MPA_V2_IRD_ORD_MASK,
+ mpa_ird & MPA_V2_IRD_ORD_MASK,
+ !!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
+ !!(mpa_ird & MPA_V2_SEND_RTR),
+ !!(mpa_ord & MPA_V2_WRITE_RTR),
+ !!(mpa_ord & MPA_V2_READ_RTR));
+ }
+}
+
+static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
+{
+ struct qed_iwarp_ep *ep = NULL;
+ int rc;
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+
+ if (list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
+ DP_ERR(p_hwfn, "Ep list is empty\n");
+ goto out;
+ }
+
+ ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
+ struct qed_iwarp_ep, list_entry);
+
+ /* in some cases we could have failed allocating a tcp cid when added
+ * from accept / failure... retry now..this is not the common case.
+ */
+ if (ep->tcp_cid == QED_IWARP_INVALID_TCP_CID) {
+ rc = qed_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
+
+ /* if we fail we could look for another entry with a valid
+ * tcp_cid, but since we don't expect to reach this anyway
+ * it's not worth the handling
+ */
+ if (rc) {
+ ep->tcp_cid = QED_IWARP_INVALID_TCP_CID;
+ ep = NULL;
+ goto out;
+ }
+ }
+
+ list_del(&ep->list_entry);
+
+out:
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ return ep;
+}
+
#define QED_IWARP_MAX_CID_CLEAN_TIME 100
#define QED_IWARP_MAX_NO_PROGRESS_CNT 5
static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn)
{
+ int rc;
+ int i;
+
+ rc = qed_iwarp_wait_cid_map_cleared(p_hwfn,
+ &p_hwfn->p_rdma_info->tcp_cid_map);
+ if (rc)
+ return rc;
+
+ /* Now free the tcp cids from the main cid map */
+ for (i = 0; i < QED_IWARP_PREALLOC_CNT; i++)
+ qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, i);
+
/* Now wait for all cids to be completed */
return qed_iwarp_wait_cid_map_cleared(p_hwfn,
&p_hwfn->p_rdma_info->cid_map);
}
+static void qed_iwarp_free_prealloc_ep(struct qed_hwfn *p_hwfn)
+{
+ struct qed_iwarp_ep *ep;
+
+ while (!list_empty(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
+ spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+
+ ep = list_first_entry(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
+ struct qed_iwarp_ep, list_entry);
+
+ if (!ep) {
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ break;
+ }
+ list_del(&ep->list_entry);
+
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+
+ if (ep->tcp_cid != QED_IWARP_INVALID_TCP_CID)
+ qed_iwarp_cid_cleaned(p_hwfn, ep->tcp_cid);
+
+ qed_iwarp_destroy_ep(p_hwfn, ep, false);
+ }
+}
+
+static int qed_iwarp_prealloc_ep(struct qed_hwfn *p_hwfn, bool init)
+{
+ struct qed_iwarp_ep *ep;
+ int rc = 0;
+ int count;
+ u32 cid;
+ int i;
+
+ count = init ? QED_IWARP_PREALLOC_CNT : 1;
+ for (i = 0; i < count; i++) {
+ rc = qed_iwarp_create_ep(p_hwfn, &ep);
+ if (rc)
+ return rc;
+
+ /* During initialization we allocate from the main pool,
+ * afterwards we allocate only from the tcp_cid.
+ */
+ if (init) {
+ rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
+ if (rc)
+ goto err;
+ qed_iwarp_set_tcp_cid(p_hwfn, cid);
+ } else {
+ /* We don't care about the return code, it's ok if
+ * tcp_cid remains invalid...in this case we'll
+ * defer allocation
+ */
+ qed_iwarp_alloc_tcp_cid(p_hwfn, &cid);
+ }
+
+ ep->tcp_cid = cid;
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ list_add_tail(&ep->list_entry,
+ &p_hwfn->p_rdma_info->iwarp.ep_free_list);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ }
+
+ return rc;
+
+err:
+ qed_iwarp_destroy_ep(p_hwfn, ep, false);
+
+ return rc;
+}
+
int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
{
+ int rc;
+
+ /* Allocate bitmap for tcp cid. These are used by passive side
+ * to ensure it can allocate a tcp cid during dpc that was
+ * pre-acquired and doesn't require dynamic allocation of ilt
+ */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
+ QED_IWARP_PREALLOC_CNT, "TCP_CID");
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate tcp cid, rc = %d\n", rc);
+ return rc;
+ }
+
+ INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
- return 0;
+ return qed_iwarp_prealloc_ep(p_hwfn, true);
}
void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
{
+ qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
+}
+
+int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+ struct qed_iwarp_ep *ep;
+ u8 mpa_data_size = 0;
+ int rc;
+
+ ep = (struct qed_iwarp_ep *)iparams->ep_context;
+ if (!ep) {
+ DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
+ return -EINVAL;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
+ iparams->qp->icid, ep->tcp_cid);
+
+ if ((iparams->ord > QED_IWARP_ORD_DEFAULT) ||
+ (iparams->ird > QED_IWARP_IRD_DEFAULT)) {
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
+ iparams->qp->icid,
+ ep->tcp_cid, iparams->ord, iparams->ord);
+ return -EINVAL;
+ }
+
+ qed_iwarp_prealloc_ep(p_hwfn, false);
+
+ ep->cb_context = iparams->cb_context;
+ ep->qp = iparams->qp;
+ ep->qp->ep = ep;
+
+ if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
+ /* Negotiate ord/ird: if upperlayer requested ord larger than
+ * ird advertised by remote, we need to decrease our ord
+ */
+ if (iparams->ord > ep->cm_info.ird)
+ iparams->ord = ep->cm_info.ird;
+
+ if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
+ (iparams->ird == 0))
+ iparams->ird = 1;
+ }
+
+ /* Update cm_info ord/ird to be negotiated values */
+ ep->cm_info.ord = iparams->ord;
+ ep->cm_info.ird = iparams->ird;
+
+ qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
+
+ ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
+ ep->cm_info.private_data_len = iparams->private_data_len +
+ mpa_data_size;
+
+ memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
+ iparams->private_data, iparams->private_data_len);
+
+ rc = qed_iwarp_mpa_offload(p_hwfn, ep);
+ if (rc)
+ qed_iwarp_modify_qp(p_hwfn,
+ iparams->qp, QED_IWARP_QP_STATE_ERROR, 1);
+
+ return rc;
+}
+
+int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams)
+{
+ struct qed_hwfn *p_hwfn = rdma_cxt;
+ struct qed_iwarp_ep *ep;
+ u8 mpa_data_size = 0;
+
+ ep = iparams->ep_context;
+ if (!ep) {
+ DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
+ return -EINVAL;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
+
+ ep->cb_context = iparams->cb_context;
+ ep->qp = NULL;
+
+ qed_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
+
+ ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
+ ep->cm_info.private_data_len = iparams->private_data_len +
+ mpa_data_size;
+
+ memcpy((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
+ iparams->private_data, iparams->private_data_len);
+
+ return qed_iwarp_mpa_offload(p_hwfn, ep);
}
static void
return rc;
}
+static bool
+qed_iwarp_ep_exists(struct qed_hwfn *p_hwfn, struct qed_iwarp_cm_info *cm_info)
+{
+ struct qed_iwarp_ep *ep = NULL;
+ bool found = false;
+
+ list_for_each_entry(ep,
+ &p_hwfn->p_rdma_info->iwarp.ep_list,
+ list_entry) {
+ if ((ep->cm_info.local_port == cm_info->local_port) &&
+ (ep->cm_info.remote_port == cm_info->remote_port) &&
+ (ep->cm_info.vlan == cm_info->vlan) &&
+ !memcmp(&ep->cm_info.local_ip, cm_info->local_ip,
+ sizeof(cm_info->local_ip)) &&
+ !memcmp(&ep->cm_info.remote_ip, cm_info->remote_ip,
+ sizeof(cm_info->remote_ip))) {
+ found = true;
+ break;
+ }
+ }
+
+ if (found) {
+ DP_NOTICE(p_hwfn,
+ "SYN received on active connection - dropping\n");
+ qed_iwarp_print_cm_info(p_hwfn, cm_info);
+
+ return true;
+ }
+
+ return false;
+}
+
static struct qed_iwarp_listener *
qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
struct qed_iwarp_cm_info *cm_info)
eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
- memcpy(remote_mac_addr, ethh->h_source, ETH_ALEN);
-
- memcpy(local_mac_addr, ethh->h_dest, ETH_ALEN);
+ ether_addr_copy(remote_mac_addr, ethh->h_source);
+ ether_addr_copy(local_mac_addr, ethh->h_dest);
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "eth_type =%d source mac: %pM\n",
eth_type, ethh->h_source);
struct qed_hwfn *p_hwfn = cxt;
u8 remote_mac_addr[ETH_ALEN];
u8 local_mac_addr[ETH_ALEN];
+ struct qed_iwarp_ep *ep;
int tcp_start_offset;
+ u8 ts_hdr_size = 0;
u8 ll2_syn_handle;
int payload_len;
+ u32 hdr_size;
int rc;
memset(&cm_info, 0, sizeof(cm_info));
}
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Received syn on listening port\n");
+ /* There may be an open ep on this connection if this is a syn
+ * retrasnmit... need to make sure there isn't...
+ */
+ if (qed_iwarp_ep_exists(p_hwfn, &cm_info))
+ goto err;
+
+ ep = qed_iwarp_get_free_ep(p_hwfn);
+ if (!ep)
+ goto err;
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+ list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
+
+ ether_addr_copy(ep->remote_mac_addr, remote_mac_addr);
+ ether_addr_copy(ep->local_mac_addr, local_mac_addr);
+
+ memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
+
+ if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
+ ts_hdr_size = TIMESTAMP_HEADER_SIZE;
+
+ hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) +
+ ts_hdr_size;
+ ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
+ ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
+
+ ep->event_cb = listener->event_cb;
+ ep->cb_context = listener->cb_context;
+ ep->connect_mode = TCP_CONNECT_PASSIVE;
+
+ ep->syn = buf;
+ ep->syn_ip_payload_length = (u16)payload_len;
+ ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
+ tcp_start_offset;
+
+ rc = qed_iwarp_tcp_offload(p_hwfn, ep);
+ if (rc) {
+ qed_iwarp_return_ep(p_hwfn, ep);
+ goto err;
+ }
+
+ return;
err:
qed_iwarp_ll2_post_rx(p_hwfn, buf, ll2_syn_handle);
}
iwarp_info->peer2peer = QED_IWARP_PARAM_P2P;
+ iwarp_info->rtr_type = MPA_RTR_TYPE_ZERO_SEND |
+ MPA_RTR_TYPE_ZERO_WRITE |
+ MPA_RTR_TYPE_ZERO_READ;
+
spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock);
+ INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_list);
INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.listen_list);
qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
{
int rc;
+ qed_iwarp_free_prealloc_ep(p_hwfn);
rc = qed_iwarp_wait_for_all_cids(p_hwfn);
if (rc)
return rc;
return qed_iwarp_ll2_stop(p_hwfn, p_ptt);
}
+void
+qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ep *ep, u8 fw_return_code)
+{
+ /* Done with the SYN packet, post back to ll2 rx */
+ qed_iwarp_ll2_post_rx(p_hwfn, ep->syn,
+ p_hwfn->p_rdma_info->iwarp.ll2_syn_handle);
+ ep->syn = NULL;
+
+ /* If connect failed - upper layer doesn't know about it */
+ qed_iwarp_mpa_received(p_hwfn, ep);
+}
+
+static inline bool
+qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
+{
+ if (!ep || (ep->sig != QED_EP_SIG)) {
+ DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
+ return false;
+ }
+
+ return true;
+}
+
static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
u8 fw_event_code, u16 echo,
union event_ring_data *data,
u8 fw_return_code)
{
+ struct regpair *fw_handle = &data->rdma_data.async_handle;
+ struct qed_iwarp_ep *ep = NULL;
+ u16 cid;
+
+ ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
+ fw_handle->lo);
+
+ switch (fw_event_code) {
+ case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
+ /* Async completion after TCP 3-way handshake */
+ if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
+ return -EINVAL;
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
+ ep->tcp_cid, fw_return_code);
+ qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
+ break;
+ case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
+ if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
+ return -EINVAL;
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
+ ep->cid, fw_return_code);
+ qed_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
+ break;
+ case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
+ cid = (u16)le32_to_cpu(fw_handle->lo);
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n", cid);
+ qed_iwarp_cid_cleaned(p_hwfn, cid);
+
+ break;
+ }
return 0;
}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff