/* * netsniff-ng - the packet sniffing beast * Copyright 2009 - 2013 Daniel Borkmann. * Subject to the GPL, version 2. */ #ifndef DISSECTOR_H #define DISSECTOR_H #include #include #include #include #include #include #include "ring.h" #include "tprintf.h" #define PRINT_NORM 0 #define PRINT_LESS 1 #define PRINT_HEX 2 #define PRINT_ASCII 3 #define PRINT_HEX_ASCII 4 #define PRINT_NONE 5 extern char *if_indextoname(unsigned ifindex, char *ifname); static const char * const packet_types[256] = { [0 ... 255] = "?", /* Unknown */ [PACKET_HOST] = "<", /* Incoming */ [PACKET_BROADCAST] = "B", /* Broadcast */ [PACKET_MULTICAST] = "M", /* Multicast */ [PACKET_OTHERHOST] = "P", /* Promisc */ [PACKET_OUTGOING] = ">", /* Outgoing */ [PACKET_USER] = ">U", /* To Userspace */ [PACKET_KERNEL] = ">K", /* To Kernelspace */ }; static inline const char *__show_ts_source(uint32_t status) { if (status & TP_STATUS_TS_RAW_HARDWARE) return "(raw hw ts)"; else if (status & TP_STATUS_TS_SYS_HARDWARE) return "(sys hw ts)"; else if (status & TP_STATUS_TS_SOFTWARE) return "(sw ts)"; else return ""; } static inline void __show_frame_hdr(uint8_t *packet, size_t len, int linktype, struct sockaddr_ll *s_ll, void *raw_hdr, int mode, bool v3) { char tmp[IFNAMSIZ]; union tpacket_uhdr hdr; uint8_t pkttype = s_ll->sll_pkttype; if (mode == PRINT_NONE) return; /* * If we're capturing on nlmon0, all packets will have sll_pkttype set * to PACKET_OUTGOING, but we actually want PACKET_USER/PACKET_KERNEL as * it originally was set in the kernel. Thus, use nlmsghdr->nlmsg_pid to * restore the type. */ if (linktype == AF_NETLINK && len >= sizeof(struct nlmsghdr)) { struct nlmsghdr *hdr = (struct nlmsghdr *) packet; pkttype = hdr->nlmsg_pid == 0 ? PACKET_KERNEL : PACKET_USER; } hdr.raw = raw_hdr; switch (mode) { case PRINT_LESS: tprintf("%s %s %u", packet_types[pkttype] ? : "?", if_indextoname(s_ll->sll_ifindex, tmp) ? : "?", v3 ? hdr.h3->tp_len : hdr.h2->tp_len); break; default: tprintf("%s %s %u %us.%uns %s\n", packet_types[pkttype] ? : "?", if_indextoname(s_ll->sll_ifindex, tmp) ? : "?", v3 ? hdr.h3->tp_len : hdr.h2->tp_len, v3 ? hdr.h3->tp_sec : hdr.h2->tp_sec, v3 ? hdr.h3->tp_nsec : hdr.h2->tp_nsec, v3 ? "" : __show_ts_source(hdr.h2->tp_status)); break; } } static inline void show_frame_hdr(uint8_t *packet, size_t len, int linktype, struct frame_map *hdr, int mode) { __show_frame_hdr(packet, len, linktype, &hdr->s_ll, &hdr->tp_h, mode, false); } extern void dissector_init_all(int fnttype); extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode); extern void dissector_cleanup_all(void); extern int dissector_set_print_type(void *ptr, int type); #endif /* DISSECTOR_H */
path: root/sound/soc/omap/omap-mcbsp.c
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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 /sound/soc/omap/omap-mcbsp.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 'sound/soc/omap/omap-mcbsp.c')