#ifndef __NET_TC_IFE_H #define __NET_TC_IFE_H #include #include #include #include #define IFE_METAHDRLEN 2 struct tcf_ife_info { struct tc_action common; u8 eth_dst[ETH_ALEN]; u8 eth_src[ETH_ALEN]; u16 eth_type; u16 flags; /* list of metaids allowed */ struct list_head metalist; }; #define to_ife(a) ((struct tcf_ife_info *)a) struct tcf_meta_info { const struct tcf_meta_ops *ops; void *metaval; u16 metaid; struct list_head metalist; }; struct tcf_meta_ops { u16 metaid; /*Maintainer provided ID */ u16 metatype; /*netlink attribute type (look at net/netlink.h) */ const char *name; const char *synopsis; struct list_head list; int (*check_presence)(struct sk_buff *, struct tcf_meta_info *); int (*encode)(struct sk_buff *, void *, struct tcf_meta_info *); int (*decode)(struct sk_buff *, void *, u16 len); int (*get)(struct sk_buff *skb, struct tcf_meta_info *mi); int (*alloc)(struct tcf_meta_info *, void *, gfp_t); void (*release)(struct tcf_meta_info *); int (*validate)(void *val, int len); struct module *owner; }; #define MODULE_ALIAS_IFE_META(metan) MODULE_ALIAS("ifemeta" __stringify_1(metan)) int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi); int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi); int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen, const void *dval); int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi); int ife_check_meta_u16(u16 metaval, struct tcf_meta_info *mi); int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi); int ife_validate_meta_u32(void *val, int len); int ife_validate_meta_u16(void *val, int len); int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi); void ife_release_meta_gen(struct tcf_meta_info *mi); int register_ife_op(struct tcf_meta_ops *mops); int unregister_ife_op(struct tcf_meta_ops *mops); #endif /* __NET_TC_IFE_H */ vents/compaction.h?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>diff
path: root/include/trace/events/compaction.h
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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 /include/trace/events/compaction.h
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 'include/trace/events/compaction.h')