/* * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef RDMA_USER_RXE_H #define RDMA_USER_RXE_H #include union rxe_gid { __u8 raw[16]; struct { __be64 subnet_prefix; __be64 interface_id; } global; }; struct rxe_global_route { union rxe_gid dgid; __u32 flow_label; __u8 sgid_index; __u8 hop_limit; __u8 traffic_class; }; struct rxe_av { __u8 port_num; __u8 network_type; struct rxe_global_route grh; union { struct sockaddr _sockaddr; struct sockaddr_in _sockaddr_in; struct sockaddr_in6 _sockaddr_in6; } sgid_addr, dgid_addr; }; struct rxe_send_wr { __u64 wr_id; __u32 num_sge; __u32 opcode; __u32 send_flags; union { __be32 imm_data; __u32 invalidate_rkey; } ex; union { struct { __u64 remote_addr; __u32 rkey; } rdma; struct { __u64 remote_addr; __u64 compare_add; __u64 swap; __u32 rkey; } atomic; struct { __u32 remote_qpn; __u32 remote_qkey; __u16 pkey_index; } ud; struct { struct ib_mr *mr; __u32 key; int access; } reg; } wr; }; struct rxe_sge { __u64 addr; __u32 length; __u32 lkey; }; struct mminfo { __u64 offset; __u32 size; __u32 pad; }; struct rxe_dma_info { __u32 length; __u32 resid; __u32 cur_sge; __u32 num_sge; __u32 sge_offset; union { __u8 inline_data[0]; struct rxe_sge sge[0]; }; }; struct rxe_send_wqe { struct rxe_send_wr wr; struct rxe_av av; __u32 status; __u32 state; __u64 iova; __u32 mask; __u32 first_psn; __u32 last_psn; __u32 ack_length; __u32 ssn; __u32 has_rd_atomic; struct rxe_dma_info dma; }; struct rxe_recv_wqe { __u64 wr_id; __u32 num_sge; __u32 padding; struct rxe_dma_info dma; }; #endif /* RDMA_USER_RXE_H */ cc0b88'>libxfs/xfs_rmap_btree.c
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authorAlexey Brodkin <Alexey.Brodkin@synopsys.com>2017-01-27 15:24:43 +0300
committerDavid S. Miller <davem@davemloft.net>2017-01-29 18:15:18 -0500
commit0a764db103376cf69d04449b10688f3516cc0b88 (patch)
tree6789a5c06ce42be32e77d6b40c6eb9baca113650 /fs/xfs/libxfs/xfs_rmap_btree.c
parent1b1bc42c1692e9b62756323c675a44cb1a1f9dbd (diff)
stmmac: Discard masked flags in interrupt status register
DW GMAC databook says the following about bits in "Register 15 (Interrupt Mask Register)": --------------------------->8------------------------- When set, this bit __disables_the_assertion_of_the_interrupt_signal__ because of the setting of XXX bit in Register 14 (Interrupt Status Register). --------------------------->8------------------------- In fact even if we mask one bit in the mask register it doesn't prevent corresponding bit to appear in the status register, it only disables interrupt generation for corresponding event. But currently we expect a bit different behavior: status bits to be in sync with their masks, i.e. if mask for bit A is set in the mask register then bit A won't appear in the interrupt status register. This was proven to be incorrect assumption, see discussion here [1]. That misunderstanding causes unexpected behaviour of the GMAC, for example we were happy enough to just see bogus messages about link state changes. So from now on we'll be only checking bits that really may trigger an interrupt. [1] https://lkml.org/lkml/2016/11/3/413 Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Fabrice Gasnier <fabrice.gasnier@st.com> Cc: Joachim Eastwood <manabian@gmail.com> Cc: Phil Reid <preid@electromag.com.au> Cc: David Miller <davem@davemloft.net> Cc: Alexandre Torgue <alexandre.torgue@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/xfs/libxfs/xfs_rmap_btree.c')