#ifndef __BPF_LOAD_H #define __BPF_LOAD_H #include "libbpf.h" #define MAX_MAPS 32 #define MAX_PROGS 32 extern int map_fd[MAX_MAPS]; extern int prog_fd[MAX_PROGS]; extern int event_fd[MAX_PROGS]; extern char bpf_log_buf[BPF_LOG_BUF_SIZE]; extern int prog_cnt; /* parses elf file compiled by llvm .c->.o * . parses 'maps' section and creates maps via BPF syscall * . parses 'license' section and passes it to syscall * . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by * storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD * . loads eBPF programs via BPF syscall * * One ELF file can contain multiple BPF programs which will be loaded * and their FDs stored stored in prog_fd array * * returns zero on success */ int load_bpf_file(char *path); void read_trace_pipe(void); struct ksym { long addr; char *name; }; int load_kallsyms(void); struct ksym *ksym_search(long key); int set_link_xdp_fd(int ifindex, int fd); #endif 6003f50d7e8d74b02d0a143'/> net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/net/ceph/ceph_hash.c
diff options
context:
space:
mode:
authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/ceph/ceph_hash.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/ceph/ceph_hash.c')