From d4d8db71db1bf602623e859e6c3e700b604c2072 Mon Sep 17 00:00:00 2001 From: Allen Pais Date: Thu, 21 Sep 2017 22:34:51 +0530 Subject: drivers: net: qlogic: use setup_timer() helper. Use setup_timer function instead of initializing timer with the function and data fields. Signed-off-by: Allen Pais Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qla3xxx.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c index 2991179c2fd0..05479d435469 100644 --- a/drivers/net/ethernet/qlogic/qla3xxx.c +++ b/drivers/net/ethernet/qlogic/qla3xxx.c @@ -3891,10 +3891,8 @@ static int ql3xxx_probe(struct pci_dev *pdev, INIT_DELAYED_WORK(&qdev->tx_timeout_work, ql_tx_timeout_work); INIT_DELAYED_WORK(&qdev->link_state_work, ql_link_state_machine_work); - init_timer(&qdev->adapter_timer); - qdev->adapter_timer.function = ql3xxx_timer; + setup_timer(&qdev->adapter_timer, ql3xxx_timer, (unsigned long)qdev); qdev->adapter_timer.expires = jiffies + HZ * 2; /* two second delay */ - qdev->adapter_timer.data = (unsigned long)qdev; if (!cards_found) { pr_alert("%s\n", DRV_STRING); -- cgit v1.2.3 From e0a8f9de16fce34fc2957eca4c71d3ff2ac286d5 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Sun, 24 Sep 2017 12:09:42 +0300 Subject: qed: Add iWARP enablement support This patch is the last of the initial iWARP patch series. It adds the possiblity to actually detect iWARP from the device and enable it in the critical locations which basically make iWARP available. It wasn't submitted until now as iWARP hadn't been accepted into the rdma tree. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_cxt.c | 6 ++++++ drivers/net/ethernet/qlogic/qed/qed_mcp.c | 8 ++++---- drivers/net/ethernet/qlogic/qed/qed_rdma.c | 5 ++++- drivers/net/ethernet/qlogic/qed/qed_sp_commands.c | 1 + 4 files changed, 15 insertions(+), 5 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.c b/drivers/net/ethernet/qlogic/qed/qed_cxt.c index af106be8cc08..afd07ad91631 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_cxt.c +++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.c @@ -2069,6 +2069,12 @@ static void qed_rdma_set_pf_params(struct qed_hwfn *p_hwfn, num_srqs = min_t(u32, 32 * 1024, p_params->num_srqs); + if (p_hwfn->mcp_info->func_info.protocol == QED_PCI_ETH_RDMA) { + DP_NOTICE(p_hwfn, + "Current day drivers don't support RoCE & iWARP simultaneously on the same PF. Default to RoCE-only\n"); + p_hwfn->hw_info.personality = QED_PCI_ETH_ROCE; + } + switch (p_hwfn->hw_info.personality) { case QED_PCI_ETH_IWARP: /* Each QP requires one connection */ diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c index 376485d99357..8b99c7d26f34 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c @@ -1691,12 +1691,12 @@ qed_mcp_get_shmem_proto_mfw(struct qed_hwfn *p_hwfn, case FW_MB_PARAM_GET_PF_RDMA_ROCE: *p_proto = QED_PCI_ETH_ROCE; break; + case FW_MB_PARAM_GET_PF_RDMA_IWARP: + *p_proto = QED_PCI_ETH_IWARP; + break; case FW_MB_PARAM_GET_PF_RDMA_BOTH: - DP_NOTICE(p_hwfn, - "Current day drivers don't support RoCE & iWARP. Default to RoCE-only\n"); - *p_proto = QED_PCI_ETH_ROCE; + *p_proto = QED_PCI_ETH_RDMA; break; - case FW_MB_PARAM_GET_PF_RDMA_IWARP: default: DP_NOTICE(p_hwfn, "MFW answers GET_PF_RDMA_PROTOCOL but param is %08x\n", diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c index 6fb99518a61f..06715f7403ef 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c +++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c @@ -156,7 +156,10 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn, return rc; p_hwfn->p_rdma_info = p_rdma_info; - p_rdma_info->proto = PROTOCOLID_ROCE; + if (QED_IS_IWARP_PERSONALITY(p_hwfn)) + p_rdma_info->proto = PROTOCOLID_IWARP; + else + p_rdma_info->proto = PROTOCOLID_ROCE; num_cons = qed_cxt_get_proto_cid_count(p_hwfn, p_rdma_info->proto, NULL); diff --git a/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c b/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c index 46d0c3cb83a5..a1d33f35aad3 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c +++ b/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c @@ -377,6 +377,7 @@ int qed_sp_pf_start(struct qed_hwfn *p_hwfn, p_ramrod->personality = PERSONALITY_ISCSI; break; case QED_PCI_ETH_ROCE: + case QED_PCI_ETH_IWARP: p_ramrod->personality = PERSONALITY_RDMA_AND_ETH; break; default: -- cgit v1.2.3 From d1abfd0b4ee2b83af88098a0c7105622c3d66e73 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Sun, 24 Sep 2017 12:09:43 +0300 Subject: qed: Add iWARP out of order support iWARP requires OOO support which is already provided by the ll2 interface (until now was used only for iSCSI offload). The changes mostly include opening a ll2 dedicated connection for OOO and notifiying the FW about the handle id. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 44 +++++++++++++++++++++++++++++ drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 11 +++++++- drivers/net/ethernet/qlogic/qed/qed_rdma.c | 7 +++-- 3 files changed, 59 insertions(+), 3 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index 9d989c96278c..568e9853cc8d 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -41,6 +41,7 @@ #include "qed_rdma.h" #include "qed_reg_addr.h" #include "qed_sp.h" +#include "qed_ooo.h" #define QED_IWARP_ORD_DEFAULT 32 #define QED_IWARP_IRD_DEFAULT 32 @@ -119,6 +120,13 @@ static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid) spin_unlock_bh(&p_hwfn->p_rdma_info->lock); } +void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, + struct iwarp_init_func_params *p_ramrod) +{ + p_ramrod->ll2_ooo_q_index = RESC_START(p_hwfn, QED_LL2_QUEUE) + + p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle; +} + static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) { int rc; @@ -1876,6 +1884,16 @@ static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; } + if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) { + rc = qed_ll2_terminate_connection(p_hwfn, + iwarp_info->ll2_ooo_handle); + if (rc) + DP_INFO(p_hwfn, "Failed to terminate ooo connection\n"); + + qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle); + iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; + } + qed_llh_remove_mac_filter(p_hwfn, p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr); return rc; @@ -1927,10 +1945,12 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, struct qed_iwarp_info *iwarp_info; struct qed_ll2_acquire_data data; struct qed_ll2_cbs cbs; + u16 n_ooo_bufs; int rc = 0; iwarp_info = &p_hwfn->p_rdma_info->iwarp; iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; + iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; iwarp_info->max_mtu = params->max_mtu; @@ -1978,6 +1998,29 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, if (rc) goto err; + /* Start OOO connection */ + data.input.conn_type = QED_LL2_TYPE_OOO; + data.input.mtu = params->max_mtu; + + n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) / + iwarp_info->max_mtu; + n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE); + + data.input.rx_num_desc = n_ooo_bufs; + data.input.rx_num_ooo_buffers = n_ooo_bufs; + + data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */ + data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE; + data.p_connection_handle = &iwarp_info->ll2_ooo_handle; + + rc = qed_ll2_acquire_connection(p_hwfn, &data); + if (rc) + goto err; + + rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle); + if (rc) + goto err; + return rc; err: qed_iwarp_ll2_stop(p_hwfn, p_ptt); @@ -2014,6 +2057,7 @@ int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, qed_iwarp_async_event); + qed_ooo_setup(p_hwfn); return qed_iwarp_ll2_start(p_hwfn, params, p_ptt); } diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 148ef3c33a5d..9e2bfde894df 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -47,7 +47,12 @@ enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state); #define QED_IWARP_LL2_SYN_TX_SIZE (128) #define QED_IWARP_LL2_SYN_RX_SIZE (256) #define QED_IWARP_MAX_SYN_PKT_SIZE (128) -#define QED_IWARP_HANDLE_INVAL (0xff) + +#define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256) +#define QED_IWARP_MAX_OOO (16) +#define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384) + +#define QED_IWARP_HANDLE_INVAL (0xff) struct qed_iwarp_ll2_buff { void *data; @@ -67,6 +72,7 @@ struct qed_iwarp_info { u8 crc_needed; u8 tcp_flags; u8 ll2_syn_handle; + u8 ll2_ooo_handle; u8 peer2peer; enum mpa_negotiation_mode mpa_rev; enum mpa_rtr_type rtr_type; @@ -147,6 +153,9 @@ int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, struct qed_rdma_start_in_params *params); +void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, + struct iwarp_init_func_params *p_ramrod); + int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c index 06715f7403ef..4f46f2851780 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c +++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c @@ -551,10 +551,13 @@ static int qed_rdma_start_fw(struct qed_hwfn *p_hwfn, if (rc) return rc; - if (QED_IS_IWARP_PERSONALITY(p_hwfn)) + if (QED_IS_IWARP_PERSONALITY(p_hwfn)) { + qed_iwarp_init_fw_ramrod(p_hwfn, + &p_ent->ramrod.iwarp_init_func.iwarp); p_ramrod = &p_ent->ramrod.iwarp_init_func.rdma; - else + } else { p_ramrod = &p_ent->ramrod.roce_init_func.rdma; + } p_params_header = &p_ramrod->params_header; p_params_header->cnq_start_offset = (u8)RESC_START(p_hwfn, -- cgit v1.2.3 From 471115ab9804f45cb8e091e426c9c67fe75e41b0 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Sun, 24 Sep 2017 12:09:44 +0300 Subject: qed: Fix maximum number of CQs for iWARP The maximum number of CQs supported is bound to the number of connections supported, which differs between RoCE and iWARP. This fixes a crash that occurred in iWARP when running 1000 sessions using perftest. Fixes: 67b40dccc45 ("qed: Implement iWARP initialization, teardown and qp operations") Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Reviewed-by: Leon Romanovsky Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_rdma.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c index 4f46f2851780..c8c4b3940564 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c +++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c @@ -209,11 +209,11 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn, goto free_pd_map; } - /* Allocate bitmap for cq's. The maximum number of CQs is bounded to - * twice the number of QPs. + /* Allocate bitmap for cq's. The maximum number of CQs is bound to + * the number of connections we support. (num_qps in iWARP or + * num_qps/2 in RoCE). */ - rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cq_map, - p_rdma_info->num_qps * 2, "CQ"); + rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cq_map, num_cons, "CQ"); if (rc) { DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Failed to allocate cq bitmap, rc = %d\n", rc); @@ -222,10 +222,10 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn, /* Allocate bitmap for toggle bit for cq icids * We toggle the bit every time we create or resize cq for a given icid. - * The maximum number of CQs is bounded to twice the number of QPs. + * Size needs to equal the size of the cq bmap. */ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->toggle_bits, - p_rdma_info->num_qps * 2, "Toggle"); + num_cons, "Toggle"); if (rc) { DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Failed to allocate toogle bits, rc = %d\n", rc); -- cgit v1.2.3 From 1e99c497012cd8647972876f1bd18545bc907aea Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Sun, 24 Sep 2017 12:09:45 +0300 Subject: qed: iWARP - Add check for errors on a SYN packet A SYN packet which arrives with errors from FW should be dropped. This required adding an additional field to the ll2 rx completion data. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 8 ++++++++ drivers/net/ethernet/qlogic/qed/qed_ll2.c | 1 + 2 files changed, 9 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index 568e9853cc8d..8fc9c811f6e3 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1733,6 +1733,14 @@ qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) memset(&cm_info, 0, sizeof(cm_info)); ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle; + + /* Check if packet was received with errors... */ + if (data->err_flags) { + DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n", + data->err_flags); + goto err; + } + if (GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) && GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) { diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index c06ad4f0758e..250afa5486cf 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -413,6 +413,7 @@ static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, struct qed_ll2_comp_rx_data *data) { data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags); + data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags); data->length.packet_length = le16_to_cpu(p_cqe->rx_cqe_fp.packet_length); data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan); -- cgit v1.2.3 From de8f3a83b0a0fddb2cf56e7a718127e9619ea3da Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Mon, 25 Sep 2017 02:25:51 +0200 Subject: bpf: add meta pointer for direct access This work enables generic transfer of metadata from XDP into skb. The basic idea is that we can make use of the fact that the resulting skb must be linear and already comes with a larger headroom for supporting bpf_xdp_adjust_head(), which mangles xdp->data. Here, we base our work on a similar principle and introduce a small helper bpf_xdp_adjust_meta() for adjusting a new pointer called xdp->data_meta. Thus, the packet has a flexible and programmable room for meta data, followed by the actual packet data. struct xdp_buff is therefore laid out that we first point to data_hard_start, then data_meta directly prepended to data followed by data_end marking the end of packet. bpf_xdp_adjust_head() takes into account whether we have meta data already prepended and if so, memmove()s this along with the given offset provided there's enough room. xdp->data_meta is optional and programs are not required to use it. The rationale is that when we process the packet in XDP (e.g. as DoS filter), we can push further meta data along with it for the XDP_PASS case, and give the guarantee that a clsact ingress BPF program on the same device can pick this up for further post-processing. Since we work with skb there, we can also set skb->mark, skb->priority or other skb meta data out of BPF, thus having this scratch space generic and programmable allows for more flexibility than defining a direct 1:1 transfer of potentially new XDP members into skb (it's also more efficient as we don't need to initialize/handle each of such new members). The facility also works together with GRO aggregation. The scratch space at the head of the packet can be multiple of 4 byte up to 32 byte large. Drivers not yet supporting xdp->data_meta can simply be set up with xdp->data_meta as xdp->data + 1 as bpf_xdp_adjust_meta() will detect this and bail out, such that the subsequent match against xdp->data for later access is guaranteed to fail. The verifier treats xdp->data_meta/xdp->data the same way as we treat xdp->data/xdp->data_end pointer comparisons. The requirement for doing the compare against xdp->data is that it hasn't been modified from it's original address we got from ctx access. It may have a range marking already from prior successful xdp->data/xdp->data_end pointer comparisons though. Signed-off-by: Daniel Borkmann Acked-by: Alexei Starovoitov Acked-by: John Fastabend Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qede/qede_fp.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c index 6fc854b120b0..48ec4c56cddf 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_fp.c +++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c @@ -1004,6 +1004,7 @@ static bool qede_rx_xdp(struct qede_dev *edev, xdp.data_hard_start = page_address(bd->data); xdp.data = xdp.data_hard_start + *data_offset; + xdp_set_data_meta_invalid(&xdp); xdp.data_end = xdp.data + *len; /* Queues always have a full reset currently, so for the time -- cgit v1.2.3 From c49c777f9c87749b73bc888f097f8a4178382449 Mon Sep 17 00:00:00 2001 From: Christos Gkekas Date: Sun, 8 Oct 2017 23:46:47 +0100 Subject: qed: Delete redundant check on dcb_app priority dcb_app priority is unsigned thus checking whether it is less than zero is redundant. Signed-off-by: Christos Gkekas Acked-By: Tomer Tayar Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_dcbx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c index 8f6ccc0c39e5..6e15d3c10ebf 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c @@ -2308,7 +2308,7 @@ static int qed_dcbnl_ieee_setapp(struct qed_dev *cdev, struct dcb_app *app) DP_VERBOSE(hwfn, QED_MSG_DCB, "selector = %d protocol = %d pri = %d\n", app->selector, app->protocol, app->priority); - if (app->priority < 0 || app->priority >= QED_MAX_PFC_PRIORITIES) { + if (app->priority >= QED_MAX_PFC_PRIORITIES) { DP_INFO(hwfn, "Invalid priority %d\n", app->priority); return -EINVAL; } -- cgit v1.2.3 From f5823fe6897c444265ef3919d8684b647eef904f Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:43 +0300 Subject: qed: Add ll2 option to limit the number of bds per packet iWARP uses 3 ll2 connections, the maximum number of bds is known during connection setup. This patch modifies the static array in the ll2_tx_packet descriptor to be a flexible array and significantlly reduces memory size. In addition, some redundant fields in the ll2_tx_packet were removed, which also contributed to decreasing the descriptor size. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 29 +++++++++++++++++++++-------- drivers/net/ethernet/qlogic/qed/qed_ll2.h | 9 +++------ 2 files changed, 24 insertions(+), 14 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index 250afa5486cf..75af40a7690a 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -1105,6 +1105,7 @@ static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, struct qed_ll2_info *p_ll2_info) { struct qed_ll2_tx_packet *p_descq; + u32 desc_size; u32 capacity; int rc = 0; @@ -1122,13 +1123,17 @@ static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, goto out; capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); - p_descq = kcalloc(capacity, sizeof(struct qed_ll2_tx_packet), - GFP_KERNEL); + /* First element is part of the packet, rest are flexibly added */ + desc_size = (sizeof(*p_descq) + + (p_ll2_info->input.tx_max_bds_per_packet - 1) * + sizeof(p_descq->bds_set)); + + p_descq = kcalloc(capacity, desc_size, GFP_KERNEL); if (!p_descq) { rc = -ENOMEM; goto out; } - p_ll2_info->tx_queue.descq_array = p_descq; + p_ll2_info->tx_queue.descq_mem = p_descq; DP_VERBOSE(p_hwfn, QED_MSG_LL2, "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", @@ -1359,11 +1364,13 @@ int qed_ll2_establish_connection(void *cxt, u8 connection_handle) { struct qed_hwfn *p_hwfn = cxt; struct qed_ll2_info *p_ll2_conn; + struct qed_ll2_tx_packet *p_pkt; struct qed_ll2_rx_queue *p_rx; struct qed_ll2_tx_queue *p_tx; struct qed_ptt *p_ptt; int rc = -EINVAL; u32 i, capacity; + u32 desc_size; u8 qid; p_ptt = qed_ptt_acquire(p_hwfn); @@ -1397,9 +1404,15 @@ int qed_ll2_establish_connection(void *cxt, u8 connection_handle) INIT_LIST_HEAD(&p_tx->sending_descq); spin_lock_init(&p_tx->lock); capacity = qed_chain_get_capacity(&p_tx->txq_chain); - for (i = 0; i < capacity; i++) - list_add_tail(&p_tx->descq_array[i].list_entry, - &p_tx->free_descq); + /* First element is part of the packet, rest are flexibly added */ + desc_size = (sizeof(*p_pkt) + + (p_ll2_conn->input.tx_max_bds_per_packet - 1) * + sizeof(p_pkt->bds_set)); + + for (i = 0; i < capacity; i++) { + p_pkt = p_tx->descq_mem + desc_size * i; + list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); + } p_tx->cur_completing_bd_idx = 0; p_tx->bds_idx = 0; p_tx->b_completing_packet = false; @@ -1698,7 +1711,7 @@ int qed_ll2_prepare_tx_packet(void *cxt, p_tx = &p_ll2_conn->tx_queue; p_tx_chain = &p_tx->txq_chain; - if (pkt->num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET) + if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet) return -EIO; spin_lock_irqsave(&p_tx->lock, flags); @@ -1858,7 +1871,7 @@ void qed_ll2_release_connection(void *cxt, u8 connection_handle) qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); } - kfree(p_ll2_conn->tx_queue.descq_array); + kfree(p_ll2_conn->tx_queue.descq_mem); qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); kfree(p_ll2_conn->rx_queue.descq_array); diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h index a822528e9c63..9bdd08f15c79 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.h +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h @@ -63,17 +63,14 @@ struct qed_ll2_rx_packet { struct qed_ll2_tx_packet { struct list_head list_entry; u16 bd_used; - u16 vlan; - u16 l4_hdr_offset_w; - u8 bd_flags; bool notify_fw; void *cookie; - + /* Flexible Array of bds_set determined by max_bds_per_packet */ struct { struct core_tx_bd *txq_bd; dma_addr_t tx_frag; u16 frag_len; - } bds_set[ETH_TX_MAX_BDS_PER_NON_LSO_PACKET]; + } bds_set[1]; }; struct qed_ll2_rx_queue { @@ -101,7 +98,7 @@ struct qed_ll2_tx_queue { struct list_head active_descq; struct list_head free_descq; struct list_head sending_descq; - struct qed_ll2_tx_packet *descq_array; + void *descq_mem; /* memory for variable sized qed_ll2_tx_packet*/ struct qed_ll2_tx_packet *cur_send_packet; struct qed_ll2_tx_packet cur_completing_packet; u16 cur_completing_bd_idx; -- cgit v1.2.3 From ed468ebee04ffba0231a8f50616bdb250752a891 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:44 +0300 Subject: qed: Add ll2 ability of opening a secondary queue When more than one ll2 queue is opened ( that is not an OOO queue ) ll2 code does not have enough information to determine whether the queue is the main one or not, so a new field is added to the acquire input data to expose the control of determining whether the queue is the main queue or a secondary queue. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 7 ++++++- drivers/net/ethernet/qlogic/qed/qed_ll2.h | 1 + 2 files changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index 75af40a7690a..3c695da890df 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -894,7 +894,7 @@ static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg; p_ramrod->inner_vlan_removal_en = p_ll2_conn->input.rx_vlan_removal_en; p_ramrod->queue_id = p_ll2_conn->queue_id; - p_ramrod->main_func_queue = (conn_type == QED_LL2_TYPE_OOO) ? 0 : 1; + p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0; if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) && p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE) && @@ -1265,6 +1265,11 @@ int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data) p_ll2_info->tx_dest = (data->input.tx_dest == QED_LL2_TX_DEST_NW) ? CORE_TX_DEST_NW : CORE_TX_DEST_LB; + if (data->input.conn_type == QED_LL2_TYPE_OOO || + data->input.secondary_queue) + p_ll2_info->main_func_queue = false; + else + p_ll2_info->main_func_queue = true; /* Correct maximum number of Tx BDs */ p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet; diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h index 9bdd08f15c79..f65817012e97 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.h +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h @@ -121,6 +121,7 @@ struct qed_ll2_info { bool b_active; enum core_tx_dest tx_dest; u8 tx_stats_en; + bool main_func_queue; struct qed_ll2_rx_queue rx_queue; struct qed_ll2_tx_queue tx_queue; struct qed_ll2_cbs cbs; -- cgit v1.2.3 From 77caa792f5d8e4ecc88eb1cf4b9c478c07e0ec57 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:45 +0300 Subject: qed: Add ll2 option for dropping a tx packet The option of sending a packet on the ll2 and dropping it exists in hardware and was not used until now, thus not exposed. The iWARP unaligned MPA flow requires this functionality for flushing the tx queue. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index 3c695da890df..ad67d36956e8 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -1597,8 +1597,20 @@ qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE : CORE_RROCE; - tx_dest = (pkt->tx_dest == QED_LL2_TX_DEST_NW) ? CORE_TX_DEST_NW - : CORE_TX_DEST_LB; + switch (pkt->tx_dest) { + case QED_LL2_TX_DEST_NW: + tx_dest = CORE_TX_DEST_NW; + break; + case QED_LL2_TX_DEST_LB: + tx_dest = CORE_TX_DEST_LB; + break; + case QED_LL2_TX_DEST_DROP: + tx_dest = CORE_TX_DEST_DROP; + break; + default: + tx_dest = CORE_TX_DEST_LB; + break; + } start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); -- cgit v1.2.3 From 6df60fe703c348a507b0030b92c2947e68e1c589 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:46 +0300 Subject: qed: Fix initialization of ll2 offload feature enable_ip_cksum, enable_l4_cksum, calc_ip_len were added in commit stated below but not passed through to FW. This was OK until now as it wasn't used, but is required for the iWARP unaligned flow Fixes:7c7973b2ae27 ("qed: LL2 to use packed information for tx") Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index ad67d36956e8..6d144747111a 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -1621,6 +1621,9 @@ qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1); SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds); SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor); + SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum)); + SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum)); + SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len)); start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data); DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag); start_bd->nbytes = cpu_to_le16(pkt->first_frag_len); -- cgit v1.2.3 From 89d65113097072de7936a2aea2f819818a7c987a Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:47 +0300 Subject: qed: Add the source of a packet sent on an iWARP ll2 connection When a packet is sent back to iWARP FW via the tx ll2 connection the FW needs to know the source of the packet. Whether it is OOO or unaligned MPA related. Since OOO is implemented entirely inside the ll2 code (and shared with iSCSI), packets are marked as IN_ORDER inside the ll2 code. For unaligned mpa the value will be determined in the iWARP code and sent on the pkt->vlan field. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index 6d144747111a..8eb9645c880d 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -1613,7 +1613,12 @@ qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, } start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); - start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); + if (QED_IS_IWARP_PERSONALITY(p_hwfn) && + p_ll2->input.conn_type == QED_LL2_TYPE_OOO) + start_bd->nw_vlan_or_lb_echo = + cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE); + else + start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan); SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, cpu_to_le16(pkt->l4_hdr_offset_w)); SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); -- cgit v1.2.3 From 6f34a284f36399501fcc034dc4522a2d8d9fa6c9 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:48 +0300 Subject: qed: Add LL2 slowpath handling For iWARP unaligned MPA flow, a slowpath event of flushing an MPA connection that entered an unaligned state is required. The flush ramrod is received on the ll2 queue, and a pre-registered callback function is called to handle the flush event. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_ll2.c | 40 +++++++++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index 8eb9645c880d..047f556ca62e 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -422,6 +422,41 @@ static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn, data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset; } +static int +qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn, + struct qed_ll2_info *p_ll2_conn, + union core_rx_cqe_union *p_cqe, + unsigned long *p_lock_flags) +{ + struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; + struct core_rx_slow_path_cqe *sp_cqe; + + sp_cqe = &p_cqe->rx_cqe_sp; + if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) { + DP_NOTICE(p_hwfn, + "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n", + sp_cqe->ramrod_cmd_id); + return -EINVAL; + } + + if (!p_ll2_conn->cbs.slowpath_cb) { + DP_NOTICE(p_hwfn, + "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n"); + return -EINVAL; + } + + spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); + + p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie, + p_ll2_conn->my_id, + le32_to_cpu(sp_cqe->opaque_data.data[0]), + le32_to_cpu(sp_cqe->opaque_data.data[1])); + + spin_lock_irqsave(&p_rx->lock, *p_lock_flags); + + return 0; +} + static int qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn, struct qed_ll2_info *p_ll2_conn, @@ -495,8 +530,8 @@ static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) switch (cqe->rx_cqe_sp.type) { case CORE_RX_CQE_TYPE_SLOW_PATH: - DP_NOTICE(p_hwfn, "LL2 - unexpected Rx CQE slowpath\n"); - rc = -EINVAL; + rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn, + cqe, &flags); break; case CORE_RX_CQE_TYPE_GSI_OFFLOAD: case CORE_RX_CQE_TYPE_REGULAR: @@ -1214,6 +1249,7 @@ qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs) p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb; p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb; p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb; + p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb; p_ll2_info->cbs.cookie = cbs->cookie; return 0; -- cgit v1.2.3 From ae3488ff37dc4f21985111f442d26a8805e56d45 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:49 +0300 Subject: qed: Add ll2 connection for processing unaligned MPA packets This patch adds only the establishment and termination of the ll2 connection that handles unaligned MPA packets. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 65 +++++++++++++++++++++++++++++ drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 1 + 2 files changed, 66 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index 8fc9c811f6e3..f413621a67b0 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1713,6 +1713,19 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, return 0; } +/* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ +#define QED_IWARP_MAX_BDS_PER_FPDU 3 +static void +qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) +{ + struct qed_iwarp_info *iwarp_info; + struct qed_hwfn *p_hwfn = cxt; + + iwarp_info = &p_hwfn->p_rdma_info->iwarp; + qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, + iwarp_info->ll2_mpa_handle); +} + static void qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) { @@ -1877,6 +1890,13 @@ static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, kfree(buffer); } +void +qed_iwarp_ll2_slowpath(void *cxt, + u8 connection_handle, + u32 opaque_data_0, u32 opaque_data_1) +{ +} + static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; @@ -1902,6 +1922,16 @@ static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; } + if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) { + rc = qed_ll2_terminate_connection(p_hwfn, + iwarp_info->ll2_mpa_handle); + if (rc) + DP_INFO(p_hwfn, "Failed to terminate mpa connection\n"); + + qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle); + iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; + } + qed_llh_remove_mac_filter(p_hwfn, p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr); return rc; @@ -1953,12 +1983,14 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, struct qed_iwarp_info *iwarp_info; struct qed_ll2_acquire_data data; struct qed_ll2_cbs cbs; + u32 mpa_buff_size; u16 n_ooo_bufs; int rc = 0; iwarp_info = &p_hwfn->p_rdma_info->iwarp; iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL; + iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL; iwarp_info->max_mtu = params->max_mtu; @@ -2029,6 +2061,39 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, if (rc) goto err; + /* Start Unaligned MPA connection */ + cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt; + cbs.slowpath_cb = qed_iwarp_ll2_slowpath; + + memset(&data, 0, sizeof(data)); + data.input.conn_type = QED_LL2_TYPE_IWARP; + data.input.mtu = params->max_mtu; + /* FW requires that once a packet arrives OOO, it must have at + * least 2 rx buffers available on the unaligned connection + * for handling the case that it is a partial fpdu. + */ + data.input.rx_num_desc = n_ooo_bufs * 2; + data.input.tx_num_desc = data.input.rx_num_desc; + data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU; + data.p_connection_handle = &iwarp_info->ll2_mpa_handle; + data.input.secondary_queue = true; + data.cbs = &cbs; + + rc = qed_ll2_acquire_connection(p_hwfn, &data); + if (rc) + goto err; + + rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle); + if (rc) + goto err; + + mpa_buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu); + rc = qed_iwarp_ll2_alloc_buffers(p_hwfn, + data.input.rx_num_desc, + mpa_buff_size, + iwarp_info->ll2_mpa_handle); + if (rc) + goto err; return rc; err: qed_iwarp_ll2_stop(p_hwfn, p_ptt); diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 9e2bfde894df..9d33a1fa1758 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -73,6 +73,7 @@ struct qed_iwarp_info { u8 tcp_flags; u8 ll2_syn_handle; u8 ll2_ooo_handle; + u8 ll2_mpa_handle; u8 peer2peer; enum mpa_negotiation_mode mpa_rev; enum mpa_rtr_type rtr_type; -- cgit v1.2.3 From fcb39f6c10b24d2d16d4c2bdb4c256bc21b8a131 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:50 +0300 Subject: qed: Add mpa buffer descriptors for storing and processing mpa fpdus The mpa buff is a descriptor for iwarp ll2 buffers that contains additional information required for aligining fpdu's. In some cases, an additional packet will arrive which will complete the alignment of a fpdu, but we won't be able to post the fpdu due to insufficient place on the tx ring. In this case we can't loose the data and require storing it for later. Processing is therefore done in two places, during rx completion, where we initialize a mpa buffer descriptor and add it to the pending list, and during tx-completion, since we free up an entry in the tx chain we can process any pending mpa packets. The mpa buff descriptors are pre-allocated since we have to ensure that we won't reach a state where we can't store an incoming unaligned packet. All packets received on the ll2 MUST be processed by the driver at some stage. Since they are preallocated, we hold a free list. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 116 ++++++++++++++++++++++++++++ drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 11 +++ 2 files changed, 127 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index f413621a67b0..efd4861c72e2 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1415,7 +1415,10 @@ int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) { + struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; + qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); + kfree(iwarp_info->mpa_bufs); } int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) @@ -1715,13 +1718,104 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ #define QED_IWARP_MAX_BDS_PER_FPDU 3 +static void +qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn, + struct unaligned_opaque_data *curr_pkt, + u32 opaque_data0, u32 opaque_data1) +{ + u64 opaque_data; + + opaque_data = HILO_64(opaque_data1, opaque_data0); + *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data); + + curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset + + le16_to_cpu(curr_pkt->first_mpa_offset); + curr_pkt->cid = le32_to_cpu(curr_pkt->cid); +} + +/* This function is called when an unaligned or incomplete MPA packet arrives + * driver needs to align the packet, perhaps using previous data and send + * it down to FW once it is aligned. + */ +static int +qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, + struct qed_iwarp_ll2_mpa_buf *mpa_buf) +{ + struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf; + int rc = -EINVAL; + + qed_iwarp_ll2_post_rx(p_hwfn, + buf, + p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle); + return rc; +} + +static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn) +{ + struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; + struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL; + int rc; + + while (!list_empty(&iwarp_info->mpa_buf_pending_list)) { + mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list, + struct qed_iwarp_ll2_mpa_buf, + list_entry); + + rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf); + + /* busy means break and continue processing later, don't + * remove the buf from the pending list. + */ + if (rc == -EBUSY) + break; + + list_del(&mpa_buf->list_entry); + list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_list); + + if (rc) { /* different error, don't continue */ + DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc); + break; + } + } +} + static void qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data) { + struct qed_iwarp_ll2_mpa_buf *mpa_buf; struct qed_iwarp_info *iwarp_info; struct qed_hwfn *p_hwfn = cxt; iwarp_info = &p_hwfn->p_rdma_info->iwarp; + mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list, + struct qed_iwarp_ll2_mpa_buf, list_entry); + if (!mpa_buf) { + DP_ERR(p_hwfn, "No free mpa buf\n"); + goto err; + } + + list_del(&mpa_buf->list_entry); + qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data, + data->opaque_data_0, data->opaque_data_1); + + DP_VERBOSE(p_hwfn, + QED_MSG_RDMA, + "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n", + data->length.packet_length, mpa_buf->data.first_mpa_offset, + mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags, + mpa_buf->data.cid); + + mpa_buf->ll2_buf = data->cookie; + mpa_buf->tcp_payload_len = data->length.packet_length - + mpa_buf->data.first_mpa_offset; + mpa_buf->data.first_mpa_offset += data->u.placement_offset; + mpa_buf->placement_offset = data->u.placement_offset; + + list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list); + + qed_iwarp_process_pending_pkts(p_hwfn); + return; +err: qed_iwarp_ll2_post_rx(p_hwfn, data->cookie, iwarp_info->ll2_mpa_handle); } @@ -1872,6 +1966,11 @@ static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, /* this was originally an rx packet, post it back */ qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); + + if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle) + qed_iwarp_process_pending_pkts(p_hwfn); + + return; } static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, @@ -1986,6 +2085,7 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, u32 mpa_buff_size; u16 n_ooo_bufs; int rc = 0; + int i; iwarp_info = &p_hwfn->p_rdma_info->iwarp; iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL; @@ -2094,6 +2194,22 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, iwarp_info->ll2_mpa_handle); if (rc) goto err; + /* The mpa_bufs array serves for pending RX packets received on the + * mpa ll2 that don't have place on the tx ring and require later + * processing. We can't fail on allocation of such a struct therefore + * we allocate enough to take care of all rx packets + */ + iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc, + sizeof(*iwarp_info->mpa_bufs), + GFP_KERNEL); + if (!iwarp_info->mpa_bufs) + goto err; + + INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list); + INIT_LIST_HEAD(&iwarp_info->mpa_buf_list); + for (i = 0; i < data.input.rx_num_desc; i++) + list_add_tail(&iwarp_info->mpa_bufs[i].list_entry, + &iwarp_info->mpa_buf_list); return rc; err: qed_iwarp_ll2_stop(p_hwfn, p_ptt); diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 9d33a1fa1758..2c53fe46345c 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -60,10 +60,20 @@ struct qed_iwarp_ll2_buff { u32 buff_size; }; +struct qed_iwarp_ll2_mpa_buf { + struct list_head list_entry; + struct qed_iwarp_ll2_buff *ll2_buf; + struct unaligned_opaque_data data; + u16 tcp_payload_len; + u8 placement_offset; +}; + struct qed_iwarp_info { struct list_head listen_list; /* qed_iwarp_listener */ struct list_head ep_list; /* qed_iwarp_ep */ struct list_head ep_free_list; /* pre-allocated ep's */ + struct list_head mpa_buf_list; /* list of mpa_bufs */ + struct list_head mpa_buf_pending_list; spinlock_t iw_lock; /* for iwarp resources */ spinlock_t qp_lock; /* for teardown races */ u32 rcv_wnd_scale; @@ -77,6 +87,7 @@ struct qed_iwarp_info { u8 peer2peer; enum mpa_negotiation_mode mpa_rev; enum mpa_rtr_type rtr_type; + struct qed_iwarp_ll2_mpa_buf *mpa_bufs; }; enum qed_iwarp_ep_state { -- cgit v1.2.3 From 469981b17a4f8ddac91837bd74ebc98578f2ddbf Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:51 +0300 Subject: qed: Add unaligned and packed packet processing The fpdu data structure is preallocated per connection. Each connection stores the current status of the connection: either nothing pending, or there is a partial fpdu that is waiting for the rest of the fpdu (incomplete bytes != 0). The same structure is also used for splitting a packet when there are packed fpdus. The structure is initialized with all data required for sending the fpdu back to the FW. A fpdu will always be spanned across a maximum of 3 tx bds. One for the header, one for the partial fdpu received and one for the remainder (unaligned) packet. In case of packed fpdu's, two fragments are used, one for the header and one for the data. Corner cases are not handled in the patch for clarity, and will be added as a separate patch. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 257 ++++++++++++++++++++++++++++ drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 13 ++ 2 files changed, 270 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index efd4861c72e2..83b147fdacde 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1419,6 +1419,7 @@ 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); kfree(iwarp_info->mpa_bufs); + kfree(iwarp_info->partial_fpdus); } int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) @@ -1716,8 +1717,170 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn, return 0; } +static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn, + u16 cid) +{ + struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; + struct qed_iwarp_fpdu *partial_fpdu; + u32 idx; + + idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP); + if (idx >= iwarp_info->max_num_partial_fpdus) { + DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid, + iwarp_info->max_num_partial_fpdus); + return NULL; + } + + partial_fpdu = &iwarp_info->partial_fpdus[idx]; + + return partial_fpdu; +} + +enum qed_iwarp_mpa_pkt_type { + QED_IWARP_MPA_PKT_PACKED, + QED_IWARP_MPA_PKT_PARTIAL, + QED_IWARP_MPA_PKT_UNALIGNED +}; + +#define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2) +#define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4) + +/* Pad to multiple of 4 */ +#define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4) +#define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \ + (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \ + QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \ + QED_IWARP_MPA_CRC32_DIGEST_SIZE) + /* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */ #define QED_IWARP_MAX_BDS_PER_FPDU 3 + +char *pkt_type_str[] = { + "QED_IWARP_MPA_PKT_PACKED", + "QED_IWARP_MPA_PKT_PARTIAL", + "QED_IWARP_MPA_PKT_UNALIGNED" +}; + +static enum qed_iwarp_mpa_pkt_type +qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, + struct qed_iwarp_fpdu *fpdu, + u16 tcp_payload_len, u8 *mpa_data) +{ + enum qed_iwarp_mpa_pkt_type pkt_type; + u16 mpa_len; + + if (fpdu->incomplete_bytes) { + pkt_type = QED_IWARP_MPA_PKT_UNALIGNED; + goto out; + } + + mpa_len = ntohs(*((u16 *)(mpa_data))); + fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); + + if (fpdu->fpdu_length <= tcp_payload_len) + pkt_type = QED_IWARP_MPA_PKT_PACKED; + else + pkt_type = QED_IWARP_MPA_PKT_PARTIAL; + +out: + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n", + pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len); + + return pkt_type; +} + +static void +qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, + struct qed_iwarp_fpdu *fpdu, + struct unaligned_opaque_data *pkt_data, + u16 tcp_payload_size, u8 placement_offset) +{ + fpdu->mpa_buf = buf; + fpdu->pkt_hdr = buf->data_phys_addr + placement_offset; + fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset; + fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset; + fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset; + + if (tcp_payload_size < fpdu->fpdu_length) + fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size; + else + fpdu->incomplete_bytes = 0; /* complete fpdu */ + + fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; +} + +static int +qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, + struct qed_iwarp_fpdu *fpdu, + struct unaligned_opaque_data *curr_pkt, + struct qed_iwarp_ll2_buff *buf, + u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type) +{ + struct qed_ll2_tx_pkt_info tx_pkt; + u8 ll2_handle; + int rc; + + memset(&tx_pkt, 0, sizeof(tx_pkt)); + + /* An unaligned packet means it's split over two tcp segments. So the + * complete packet requires 3 bds, one for the header, one for the + * part of the fpdu of the first tcp segment, and the last fragment + * will point to the remainder of the fpdu. A packed pdu, requires only + * two bds, one for the header and one for the data. + */ + tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2; + tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; + tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */ + + /* Send the mpa_buf only with the last fpdu (in case of packed) */ + if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED || + tcp_payload_size <= fpdu->fpdu_length) + tx_pkt.cookie = fpdu->mpa_buf; + + tx_pkt.first_frag = fpdu->pkt_hdr; + tx_pkt.first_frag_len = fpdu->pkt_hdr_size; + tx_pkt.enable_ip_cksum = true; + tx_pkt.enable_l4_cksum = true; + tx_pkt.calc_ip_len = true; + /* vlan overload with enum iwarp_ll2_tx_queues */ + tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; + + ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; + + /* Set first fragment to header */ + rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); + if (rc) + goto out; + + /* Set second fragment to first part of packet */ + rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle, + fpdu->mpa_frag, + fpdu->mpa_frag_len); + if (rc) + goto out; + + if (!fpdu->incomplete_bytes) + goto out; + + /* Set third fragment to second part of the packet */ + rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, + ll2_handle, + buf->data_phys_addr + + curr_pkt->first_mpa_offset, + fpdu->incomplete_bytes); +out: + DP_VERBOSE(p_hwfn, + QED_MSG_RDMA, + "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n", + tx_pkt.num_of_bds, + tx_pkt.first_frag_len, + fpdu->mpa_frag_len, + fpdu->incomplete_bytes, rc); + + return rc; +} + static void qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn, struct unaligned_opaque_data *curr_pkt, @@ -1741,9 +1904,79 @@ static int qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, struct qed_iwarp_ll2_mpa_buf *mpa_buf) { + struct unaligned_opaque_data *curr_pkt = &mpa_buf->data; struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf; + enum qed_iwarp_mpa_pkt_type pkt_type; + struct qed_iwarp_fpdu *fpdu; int rc = -EINVAL; + u8 *mpa_data; + + fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff); + if (!fpdu) { /* something corrupt with cid, post rx back */ + DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n", + curr_pkt->cid); + goto err; + } + do { + mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset); + + pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu, + mpa_buf->tcp_payload_len, + mpa_data); + + switch (pkt_type) { + case QED_IWARP_MPA_PKT_PARTIAL: + qed_iwarp_init_fpdu(buf, fpdu, + curr_pkt, + mpa_buf->tcp_payload_len, + mpa_buf->placement_offset); + + mpa_buf->tcp_payload_len = 0; + break; + case QED_IWARP_MPA_PKT_PACKED: + qed_iwarp_init_fpdu(buf, fpdu, + curr_pkt, + mpa_buf->tcp_payload_len, + mpa_buf->placement_offset); + + rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, + mpa_buf->tcp_payload_len, + pkt_type); + if (rc) { + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "Can't send FPDU:reset rc=%d\n", rc); + memset(fpdu, 0, sizeof(*fpdu)); + break; + } + + mpa_buf->tcp_payload_len -= fpdu->fpdu_length; + curr_pkt->first_mpa_offset += fpdu->fpdu_length; + break; + case QED_IWARP_MPA_PKT_UNALIGNED: + rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, + mpa_buf->tcp_payload_len, + pkt_type); + if (rc) { + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "Can't send FPDU:delay rc=%d\n", rc); + /* don't reset fpdu -> we need it for next + * classify + */ + break; + } + + mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes; + curr_pkt->first_mpa_offset += fpdu->incomplete_bytes; + /* The framed PDU was sent - no more incomplete bytes */ + fpdu->incomplete_bytes = 0; + break; + } + } while (mpa_buf->tcp_payload_len && !rc); + + return rc; + +err: qed_iwarp_ll2_post_rx(p_hwfn, buf, p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle); @@ -1989,11 +2222,27 @@ static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, kfree(buffer); } +/* The only slowpath for iwarp ll2 is unalign flush. When this completion + * is received, need to reset the FPDU. + */ void qed_iwarp_ll2_slowpath(void *cxt, u8 connection_handle, u32 opaque_data_0, u32 opaque_data_1) { + struct unaligned_opaque_data unalign_data; + struct qed_hwfn *p_hwfn = cxt; + struct qed_iwarp_fpdu *fpdu; + + qed_iwarp_mpa_get_data(p_hwfn, &unalign_data, + opaque_data_0, opaque_data_1); + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", + unalign_data.cid); + + fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid); + if (fpdu) + memset(fpdu, 0, sizeof(*fpdu)); } static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) @@ -2194,6 +2443,14 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, iwarp_info->ll2_mpa_handle); if (rc) goto err; + + iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps, + sizeof(*iwarp_info->partial_fpdus), + GFP_KERNEL); + if (!iwarp_info->partial_fpdus) + goto err; + + iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps; /* The mpa_bufs array serves for pending RX packets received on the * mpa ll2 that don't have place on the tx ring and require later * processing. We can't fail on allocation of such a struct therefore diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 2c53fe46345c..858755cafd2b 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -68,6 +68,17 @@ struct qed_iwarp_ll2_mpa_buf { u8 placement_offset; }; +struct qed_iwarp_fpdu { + struct qed_iwarp_ll2_buff *mpa_buf; + void *mpa_frag_virt; + dma_addr_t mpa_frag; + dma_addr_t pkt_hdr; + u16 mpa_frag_len; + u16 fpdu_length; + u16 incomplete_bytes; + u8 pkt_hdr_size; +}; + struct qed_iwarp_info { struct list_head listen_list; /* qed_iwarp_listener */ struct list_head ep_list; /* qed_iwarp_ep */ @@ -87,7 +98,9 @@ struct qed_iwarp_info { u8 peer2peer; enum mpa_negotiation_mode mpa_rev; enum mpa_rtr_type rtr_type; + struct qed_iwarp_fpdu *partial_fpdus; struct qed_iwarp_ll2_mpa_buf *mpa_bufs; + u16 max_num_partial_fpdus; }; enum qed_iwarp_ep_state { -- cgit v1.2.3 From d531038eeb6dd25dbf88402f932bf0ea524de82e Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:52 +0300 Subject: qed: Add support for freeing two ll2 buffers for corner cases When posting a packet on the ll2 tx, we can provide a cookie that will be returned upon tx completion. This cookie is the ll2 iwarp buffer which is then reposted to the rx ring. Part of the unaligned mpa flow is determining when a buffer can be reposted. Each buffer needs to be sent only once as a cookie for on the tx ring. In packed fpdu case, only the last packet will be sent with the buffer, meaning we need to handle the case that a cookie can be NULL on tx complete. In addition, when a fpdu splits over two buffers, but there are no more fpdus on the second buffer, two buffers need to be provided as a cookie. To avoid changing the ll2 interface to provide two cookies, we introduce a piggy buf pointer, relevant for iWARP only, that holds a pointer to a second buffer that needs to be released during tx completion. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 25 +++++++++++++++++++++++++ drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 1 + 2 files changed, 26 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index 83b147fdacde..8b17369af9ef 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1846,6 +1846,12 @@ qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, /* vlan overload with enum iwarp_ll2_tx_queues */ tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE; + /* special case of unaligned packet and not packed, need to send + * both buffers as cookie to release. + */ + if (tcp_payload_size == fpdu->incomplete_bytes) + fpdu->mpa_buf->piggy_buf = buf; + ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; /* Set first fragment to header */ @@ -2195,9 +2201,19 @@ static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle, bool b_last_fragment, bool b_last_packet) { struct qed_iwarp_ll2_buff *buffer = cookie; + struct qed_iwarp_ll2_buff *piggy; struct qed_hwfn *p_hwfn = cxt; + if (!buffer) /* can happen in packed mpa unaligned... */ + return; + /* this was originally an rx packet, post it back */ + piggy = buffer->piggy_buf; + if (piggy) { + buffer->piggy_buf = NULL; + qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle); + } + qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle); if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle) @@ -2216,6 +2232,15 @@ static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle, if (!buffer) return; + if (buffer->piggy_buf) { + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + buffer->piggy_buf->buff_size, + buffer->piggy_buf->data, + buffer->piggy_buf->data_phys_addr); + + kfree(buffer->piggy_buf); + } + dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size, buffer->data, buffer->data_phys_addr); diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 858755cafd2b..58db51af26bd 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -55,6 +55,7 @@ enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state); #define QED_IWARP_HANDLE_INVAL (0xff) struct qed_iwarp_ll2_buff { + struct qed_iwarp_ll2_buff *piggy_buf; void *data; dma_addr_t data_phys_addr; u32 buff_size; -- cgit v1.2.3 From c7d1d839999476aac0d7e16732722285a9c30cce Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:53 +0300 Subject: qed: Add support for MPA header being split over two tcp packets There is a special case where an MPA header is split over to tcp packets, in this case we need to wait for the next packet to get the fpdu length. We use the incomplete_bytes to mark this fpdu as a "special" one which requires updating the length with the next packet Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 36 ++++++++++++++++++++++++++++- drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 6 +++++ 2 files changed, 41 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index 8b17369af9ef..299494225f44 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1742,6 +1742,7 @@ enum qed_iwarp_mpa_pkt_type { QED_IWARP_MPA_PKT_UNALIGNED }; +#define QED_IWARP_INVALID_FPDU_LENGTH 0xffff #define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2) #define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4) @@ -1774,6 +1775,15 @@ qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, goto out; } + /* special case of one byte remaining... + * lower byte will be read next packet + */ + if (tcp_payload_len == 1) { + fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE; + pkt_type = QED_IWARP_MPA_PKT_PARTIAL; + goto out; + } + mpa_len = ntohs(*((u16 *)(mpa_data))); fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); @@ -1802,7 +1812,9 @@ qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset; fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset; - if (tcp_payload_size < fpdu->fpdu_length) + if (tcp_payload_size == 1) + fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH; + else if (tcp_payload_size < fpdu->fpdu_length) fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size; else fpdu->incomplete_bytes = 0; /* complete fpdu */ @@ -1810,6 +1822,27 @@ qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; } +static void +qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, + struct qed_iwarp_fpdu *fpdu, u8 *mpa_data) +{ + u16 mpa_len; + + /* Update incomplete packets if needed */ + if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) { + /* Missing lower byte is now available */ + mpa_len = fpdu->fpdu_length | *mpa_data; + fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len); + fpdu->mpa_frag_len = fpdu->fpdu_length; + /* one byte of hdr */ + fpdu->incomplete_bytes = fpdu->fpdu_length - 1; + DP_VERBOSE(p_hwfn, + QED_MSG_RDMA, + "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n", + mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes); + } +} + static int qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu, @@ -1960,6 +1993,7 @@ qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, curr_pkt->first_mpa_offset += fpdu->fpdu_length; break; case QED_IWARP_MPA_PKT_UNALIGNED: + qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data); rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, mpa_buf->tcp_payload_len, pkt_type); diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 58db51af26bd..c58793a47774 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -69,6 +69,12 @@ struct qed_iwarp_ll2_mpa_buf { u8 placement_offset; }; +/* In some cases a fpdu will arrive with only one byte of the header, in this + * case the fpdu_length will be partial (contain only higher byte and + * incomplete bytes will contain the invalid value + */ +#define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff + struct qed_iwarp_fpdu { struct qed_iwarp_ll2_buff *mpa_buf; void *mpa_frag_virt; -- cgit v1.2.3 From 1e28eaad07ea1e2d6537586529e87cbc1d698ffd Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Mon, 9 Oct 2017 12:37:54 +0300 Subject: qed: Add iWARP support for fpdu spanned over more than two tcp packets We continue to maintain a maximum of three buffers per fpdu, to ensure that there are enough buffers for additional unaligned mpa packets. To support this, if a fpdu is split over more than two tcp packets, we use an intermediate buffer to copy the data to the previous buffer, then we can release the data. We need an intermediate buffer as the initial buffer partial packet could be located at the end of the packet, not leaving room for additional data. This is a corner case, and will usually not be the case. Signed-off-by: Michal Kalderon Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 193 ++++++++++++++++++++++++++++ drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 1 + 2 files changed, 194 insertions(+) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index 299494225f44..b2b1f87864ef 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1420,6 +1420,7 @@ 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); kfree(iwarp_info->mpa_bufs); kfree(iwarp_info->partial_fpdus); + kfree(iwarp_info->mpa_intermediate_buf); } int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams) @@ -1762,6 +1763,11 @@ char *pkt_type_str[] = { "QED_IWARP_MPA_PKT_UNALIGNED" }; +static int +qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, + struct qed_iwarp_fpdu *fpdu, + struct qed_iwarp_ll2_buff *buf); + static enum qed_iwarp_mpa_pkt_type qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu, @@ -1822,6 +1828,68 @@ qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf, fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes; } +static int +qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn, + struct qed_iwarp_fpdu *fpdu, + struct unaligned_opaque_data *pkt_data, + struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size) +{ + u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf; + int rc; + + /* need to copy the data from the partial packet stored in fpdu + * to the new buf, for this we also need to move the data currently + * placed on the buf. The assumption is that the buffer is big enough + * since fpdu_length <= mss, we use an intermediate buffer since + * we may need to copy the new data to an overlapping location + */ + if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) { + DP_ERR(p_hwfn, + "MPA ALIGN: Unexpected: buffer is not large enough for split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", + buf->buff_size, fpdu->mpa_frag_len, + tcp_payload_size, fpdu->incomplete_bytes); + return -EINVAL; + } + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n", + fpdu->mpa_frag_virt, fpdu->mpa_frag_len, + (u8 *)(buf->data) + pkt_data->first_mpa_offset, + tcp_payload_size); + + memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len); + memcpy(tmp_buf + fpdu->mpa_frag_len, + (u8 *)(buf->data) + pkt_data->first_mpa_offset, + tcp_payload_size); + + rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf); + if (rc) + return rc; + + /* If we managed to post the buffer copy the data to the new buffer + * o/w this will occur in the next round... + */ + memcpy((u8 *)(buf->data), tmp_buf, + fpdu->mpa_frag_len + tcp_payload_size); + + fpdu->mpa_buf = buf; + /* fpdu->pkt_hdr remains as is */ + /* fpdu->mpa_frag is overridden with new buf */ + fpdu->mpa_frag = buf->data_phys_addr; + fpdu->mpa_frag_virt = buf->data; + fpdu->mpa_frag_len += tcp_payload_size; + + fpdu->incomplete_bytes -= tcp_payload_size; + + DP_VERBOSE(p_hwfn, + QED_MSG_RDMA, + "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n", + buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size, + fpdu->incomplete_bytes); + + return 0; +} + static void qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu, u8 *mpa_data) @@ -1843,6 +1911,90 @@ qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn, } } +#define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \ + (GET_FIELD((_curr_pkt)->flags, \ + UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE)) + +/* This function is used to recycle a buffer using the ll2 drop option. It + * uses the mechanism to ensure that all buffers posted to tx before this one + * were completed. The buffer sent here will be sent as a cookie in the tx + * completion function and can then be reposted to rx chain when done. The flow + * that requires this is the flow where a FPDU splits over more than 3 tcp + * segments. In this case the driver needs to re-post a rx buffer instead of + * the one received, but driver can't simply repost a buffer it copied from + * as there is a case where the buffer was originally a packed FPDU, and is + * partially posted to FW. Driver needs to ensure FW is done with it. + */ +static int +qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn, + struct qed_iwarp_fpdu *fpdu, + struct qed_iwarp_ll2_buff *buf) +{ + struct qed_ll2_tx_pkt_info tx_pkt; + u8 ll2_handle; + int rc; + + memset(&tx_pkt, 0, sizeof(tx_pkt)); + tx_pkt.num_of_bds = 1; + tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP; + tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; + tx_pkt.first_frag = fpdu->pkt_hdr; + tx_pkt.first_frag_len = fpdu->pkt_hdr_size; + buf->piggy_buf = NULL; + tx_pkt.cookie = buf; + + ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; + + rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); + if (rc) + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "Can't drop packet rc=%d\n", rc); + + DP_VERBOSE(p_hwfn, + QED_MSG_RDMA, + "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n", + (unsigned long int)tx_pkt.first_frag, + tx_pkt.first_frag_len, buf, rc); + + return rc; +} + +static int +qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu) +{ + struct qed_ll2_tx_pkt_info tx_pkt; + u8 ll2_handle; + int rc; + + memset(&tx_pkt, 0, sizeof(tx_pkt)); + tx_pkt.num_of_bds = 1; + tx_pkt.tx_dest = QED_LL2_TX_DEST_LB; + tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; + + tx_pkt.first_frag = fpdu->pkt_hdr; + tx_pkt.first_frag_len = fpdu->pkt_hdr_size; + tx_pkt.enable_ip_cksum = true; + tx_pkt.enable_l4_cksum = true; + tx_pkt.calc_ip_len = true; + /* vlan overload with enum iwarp_ll2_tx_queues */ + tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE; + + ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle; + + rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true); + if (rc) + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "Can't send right edge rc=%d\n", rc); + DP_VERBOSE(p_hwfn, + QED_MSG_RDMA, + "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n", + tx_pkt.num_of_bds, + (unsigned long int)tx_pkt.first_frag, + tx_pkt.first_frag_len, rc); + + return rc; +} + static int qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu, @@ -1971,6 +2123,20 @@ qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, mpa_buf->tcp_payload_len, mpa_buf->placement_offset); + if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { + mpa_buf->tcp_payload_len = 0; + break; + } + + rc = qed_iwarp_win_right_edge(p_hwfn, fpdu); + + if (rc) { + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "Can't send FPDU:reset rc=%d\n", rc); + memset(fpdu, 0, sizeof(*fpdu)); + break; + } + mpa_buf->tcp_payload_len = 0; break; case QED_IWARP_MPA_PKT_PACKED: @@ -1994,6 +2160,28 @@ qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn, break; case QED_IWARP_MPA_PKT_UNALIGNED: qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data); + if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) { + /* special handling of fpdu split over more + * than 2 segments + */ + if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) { + rc = qed_iwarp_win_right_edge(p_hwfn, + fpdu); + /* packet will be re-processed later */ + if (rc) + return rc; + } + + rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt, + buf, + mpa_buf->tcp_payload_len); + if (rc) /* packet will be re-processed later */ + return rc; + + mpa_buf->tcp_payload_len = 0; + break; + } + rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf, mpa_buf->tcp_payload_len, pkt_type); @@ -2510,6 +2698,11 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn, goto err; iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps; + + iwarp_info->mpa_intermediate_buf = kzalloc(mpa_buff_size, GFP_KERNEL); + if (!iwarp_info->mpa_intermediate_buf) + goto err; + /* The mpa_bufs array serves for pending RX packets received on the * mpa ll2 that don't have place on the tx ring and require later * processing. We can't fail on allocation of such a struct therefore diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index c58793a47774..c1ecd743305f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -107,6 +107,7 @@ struct qed_iwarp_info { enum mpa_rtr_type rtr_type; struct qed_iwarp_fpdu *partial_fpdus; struct qed_iwarp_ll2_mpa_buf *mpa_bufs; + u8 *mpa_intermediate_buf; u16 max_num_partial_fpdus; }; -- cgit v1.2.3 From f436baf326ae62aecffbee8572f8bc75394dbaa3 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Tue, 17 Oct 2017 10:23:25 +0300 Subject: qed: Fix iWARP out of order flow Out of order flow is not working for iWARP. This patch got cut out from initial series that added out of order support for iWARP. Make out of order code common for iWARP and iSCSI. Add new configuration option CONFIG_QED_OOO. Set by qedr and qedi Kconfigs. Fixes: d1abfd0b4ee2 ("qed: Add iWARP out of order support") Signed-off-by: Michal Kalderon Signed-off-by: Manish Rangankar Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/Kconfig | 3 +++ drivers/net/ethernet/qlogic/qed/Makefile | 3 ++- drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 7 ++++++- drivers/net/ethernet/qlogic/qed/qed_ooo.c | 16 +++++++++++++--- drivers/net/ethernet/qlogic/qed/qed_ooo.h | 2 +- 5 files changed, 25 insertions(+), 6 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/Kconfig b/drivers/net/ethernet/qlogic/Kconfig index c2e24afbaeb2..26ddf092e3ec 100644 --- a/drivers/net/ethernet/qlogic/Kconfig +++ b/drivers/net/ethernet/qlogic/Kconfig @@ -117,4 +117,7 @@ config QED_ISCSI config QED_FCOE bool +config QED_OOO + bool + endif # NET_VENDOR_QLOGIC diff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile index 82dd47068e18..c3c599950574 100644 --- a/drivers/net/ethernet/qlogic/qed/Makefile +++ b/drivers/net/ethernet/qlogic/qed/Makefile @@ -6,5 +6,6 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \ qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o qed-$(CONFIG_QED_LL2) += qed_ll2.o qed-$(CONFIG_QED_RDMA) += qed_roce.o qed_rdma.o qed_iwarp.o -qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o qed_ooo.o +qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o qed-$(CONFIG_QED_FCOE) += qed_fcoe.o +qed-$(CONFIG_QED_OOO) += qed_ooo.o diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c index b2b1f87864ef..409041eab189 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -1410,13 +1410,18 @@ int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list); spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); - return qed_iwarp_prealloc_ep(p_hwfn, true); + rc = qed_iwarp_prealloc_ep(p_hwfn, true); + if (rc) + return rc; + + return qed_ooo_alloc(p_hwfn); } void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) { struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp; + qed_ooo_free(p_hwfn); qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1); kfree(iwarp_info->mpa_bufs); kfree(iwarp_info->partial_fpdus); diff --git a/drivers/net/ethernet/qlogic/qed/qed_ooo.c b/drivers/net/ethernet/qlogic/qed/qed_ooo.c index 000636530111..6172354b451c 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ooo.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ooo.c @@ -103,18 +103,28 @@ int qed_ooo_alloc(struct qed_hwfn *p_hwfn) { u16 max_num_archipelagos = 0, cid_base; struct qed_ooo_info *p_ooo_info; + enum protocol_type proto; u16 max_num_isles = 0; u32 i; - if (p_hwfn->hw_info.personality != QED_PCI_ISCSI) { + switch (p_hwfn->hw_info.personality) { + case QED_PCI_ISCSI: + proto = PROTOCOLID_ISCSI; + break; + case QED_PCI_ETH_RDMA: + case QED_PCI_ETH_IWARP: + proto = PROTOCOLID_IWARP; + break; + default: DP_NOTICE(p_hwfn, "Failed to allocate qed_ooo_info: unknown personality\n"); return -EINVAL; } - max_num_archipelagos = p_hwfn->pf_params.iscsi_pf_params.num_cons; + max_num_archipelagos = (u16)qed_cxt_get_proto_cid_count(p_hwfn, proto, + NULL); max_num_isles = QED_MAX_NUM_ISLES + max_num_archipelagos; - cid_base = (u16)qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_ISCSI); + cid_base = (u16)qed_cxt_get_proto_cid_start(p_hwfn, proto); if (!max_num_archipelagos) { DP_NOTICE(p_hwfn, diff --git a/drivers/net/ethernet/qlogic/qed/qed_ooo.h b/drivers/net/ethernet/qlogic/qed/qed_ooo.h index e8ed40b848f5..49c4e75b15b1 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ooo.h +++ b/drivers/net/ethernet/qlogic/qed/qed_ooo.h @@ -83,7 +83,7 @@ struct qed_ooo_info { u16 cid_base; }; -#if IS_ENABLED(CONFIG_QED_ISCSI) +#if IS_ENABLED(CONFIG_QED_OOO) void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn, struct qed_ooo_info *p_ooo_info, struct ooo_opaque *p_cqe); -- cgit v1.2.3 From f4e63525ee35f9c02e9f51f90571718363e9a9a9 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Fri, 3 Nov 2017 13:56:16 -0700 Subject: net: bpf: rename ndo_xdp to ndo_bpf ndo_xdp is a control path callback for setting up XDP in the driver. We can reuse it for other forms of communication between the eBPF stack and the drivers. Rename the callback and associated structures and definitions. Signed-off-by: Jakub Kicinski Reviewed-by: Simon Horman Reviewed-by: Quentin Monnet Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qede/qede.h | 2 +- drivers/net/ethernet/qlogic/qede/qede_filter.c | 2 +- drivers/net/ethernet/qlogic/qede/qede_main.c | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h index adb700512baa..a3a70ade411f 100644 --- a/drivers/net/ethernet/qlogic/qede/qede.h +++ b/drivers/net/ethernet/qlogic/qede/qede.h @@ -503,7 +503,7 @@ void qede_fill_rss_params(struct qede_dev *edev, void qede_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti); void qede_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti); -int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp); +int qede_xdp(struct net_device *dev, struct netdev_bpf *xdp); #ifdef CONFIG_DCB void qede_set_dcbnl_ops(struct net_device *ndev); diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c index f79e36e4060a..c1a0708a7d7c 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_filter.c +++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c @@ -1065,7 +1065,7 @@ static int qede_xdp_set(struct qede_dev *edev, struct bpf_prog *prog) return 0; } -int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp) +int qede_xdp(struct net_device *dev, struct netdev_bpf *xdp) { struct qede_dev *edev = netdev_priv(dev); diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index e5ee9f274a71..8f9b3eb82137 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -556,7 +556,7 @@ static const struct net_device_ops qede_netdev_ops = { .ndo_udp_tunnel_add = qede_udp_tunnel_add, .ndo_udp_tunnel_del = qede_udp_tunnel_del, .ndo_features_check = qede_features_check, - .ndo_xdp = qede_xdp, + .ndo_bpf = qede_xdp, #ifdef CONFIG_RFS_ACCEL .ndo_rx_flow_steer = qede_rx_flow_steer, #endif @@ -594,7 +594,7 @@ static const struct net_device_ops qede_netdev_vf_xdp_ops = { .ndo_udp_tunnel_add = qede_udp_tunnel_add, .ndo_udp_tunnel_del = qede_udp_tunnel_del, .ndo_features_check = qede_features_check, - .ndo_xdp = qede_xdp, + .ndo_bpf = qede_xdp, }; /* ------------------------------------------------------------------------- -- cgit v1.2.3 From 98b07e3ed019cbea5ad049df3892957d5fa90b9e Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 9 Nov 2017 07:52:15 +0000 Subject: qlge: remove duplicated assignment to mbcp The assignment to mbcp is identical to the initiatialized value assigned to mbcp at declaration time a few lines earlier, hence we can remove the second redundant assignment. Cleans up clang warning: drivers/net/ethernet/qlogic/qlge/qlge_mpi.c:209:22: warning: Value stored to 'mbcp' during its initialization is never read Signed-off-by: Colin Ian King Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlge/qlge_mpi.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/net/ethernet/qlogic') diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c b/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c index 384c8bc874f3..4be65d6761b3 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c @@ -213,7 +213,6 @@ static int ql_idc_req_aen(struct ql_adapter *qdev) /* Get the status data and start up a thread to * handle the request. */ - mbcp = &qdev->idc_mbc; mbcp->out_count = 4; status = ql_get_mb_sts(qdev, mbcp); if (status) { -- cgit v1.2.3