#ifndef _TRANSP_V6_H #define _TRANSP_V6_H #include /* IPv6 transport protocols */ extern struct proto rawv6_prot; extern struct proto udpv6_prot; extern struct proto udplitev6_prot; extern struct proto tcpv6_prot; extern struct proto pingv6_prot; struct flowi6; /* extension headers */ int ipv6_exthdrs_init(void); void ipv6_exthdrs_exit(void); int ipv6_frag_init(void); void ipv6_frag_exit(void); /* transport protocols */ int pingv6_init(void); void pingv6_exit(void); int rawv6_init(void); void rawv6_exit(void); int udpv6_init(void); void udpv6_exit(void); int udplitev6_init(void); void udplitev6_exit(void); int tcpv6_init(void); void tcpv6_exit(void); int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len); /* this does all the common and the specific ctl work */ void ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb); void ip6_datagram_recv_common_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb); void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb); int ip6_datagram_send_ctl(struct net *net, struct sock *sk, struct msghdr *msg, struct flowi6 *fl6, struct ipcm6_cookie *ipc6, struct sockcm_cookie *sockc); void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, __u16 srcp, __u16 destp, int bucket); #define LOOPBACK4_IPV6 cpu_to_be32(0x7f000006) /* address family specific functions */ extern const struct inet_connection_sock_af_ops ipv4_specific; void inet6_destroy_sock(struct sock *sk); #define IPV6_SEQ_DGRAM_HEADER \ " sl " \ "local_address " \ "remote_address " \ "st tx_queue rx_queue tr tm->when retrnsmt" \ " uid timeout inode ref pointer drops\n" #endif /cgit.cgi/linux/net-next.git/commit/net/unix?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>commitdiff
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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 /net/unix
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/unix')