/****************************************************************************** * gntalloc.h * * Interface to /dev/xen/gntalloc. * * Author: Daniel De Graaf * * This file is in the public domain. */ #ifndef __LINUX_PUBLIC_GNTALLOC_H__ #define __LINUX_PUBLIC_GNTALLOC_H__ #include /* * Allocates a new page and creates a new grant reference. */ #define IOCTL_GNTALLOC_ALLOC_GREF \ _IOC(_IOC_NONE, 'G', 5, sizeof(struct ioctl_gntalloc_alloc_gref)) struct ioctl_gntalloc_alloc_gref { /* IN parameters */ /* The ID of the domain to be given access to the grants. */ __u16 domid; /* Flags for this mapping */ __u16 flags; /* Number of pages to map */ __u32 count; /* OUT parameters */ /* The offset to be used on a subsequent call to mmap(). */ __u64 index; /* The grant references of the newly created grant, one per page */ /* Variable size, depending on count */ __u32 gref_ids[1]; }; #define GNTALLOC_FLAG_WRITABLE 1 /* * Deallocates the grant reference, allowing the associated page to be freed if * no other domains are using it. */ #define IOCTL_GNTALLOC_DEALLOC_GREF \ _IOC(_IOC_NONE, 'G', 6, sizeof(struct ioctl_gntalloc_dealloc_gref)) struct ioctl_gntalloc_dealloc_gref { /* IN parameters */ /* The offset returned in the map operation */ __u64 index; /* Number of references to unmap */ __u32 count; }; /* * Sets up an unmap notification within the page, so that the other side can do * cleanup if this side crashes. Required to implement cross-domain robust * mutexes or close notification on communication channels. * * Each mapped page only supports one notification; multiple calls referring to * the same page overwrite the previous notification. You must clear the * notification prior to the IOCTL_GNTALLOC_DEALLOC_GREF if you do not want it * to occur. */ #define IOCTL_GNTALLOC_SET_UNMAP_NOTIFY \ _IOC(_IOC_NONE, 'G', 7, sizeof(struct ioctl_gntalloc_unmap_notify)) struct ioctl_gntalloc_unmap_notify { /* IN parameters */ /* Offset in the file descriptor for a byte within the page (same as * used in mmap). If using UNMAP_NOTIFY_CLEAR_BYTE, this is the byte to * be cleared. Otherwise, it can be any byte in the page whose * notification we are adjusting. */ __u64 index; /* Action(s) to take on unmap */ __u32 action; /* Event channel to notify */ __u32 event_channel_port; }; /* Clear (set to zero) the byte specified by index */ #define UNMAP_NOTIFY_CLEAR_BYTE 0x1 /* Send an interrupt on the indicated event channel */ #define UNMAP_NOTIFY_SEND_EVENT 0x2 #endif /* __LINUX_PUBLIC_GNTALLOC_H__ */ 'q' value=''/>
path: root/net
AgeCommit message (Expand)AuthorFilesLines
2017-02-14bridge: fdb: converge fdb_delete_by functions into oneNikolay Aleksandrov1-47/+15
2017-02-14bridge: fdb: add proper lock checks in searching functionsNikolay Aleksandrov2-0/+13
2017-02-14bridge: fdb: converge fdb searching functions into oneNikolay Aleksandrov4-70/+54
2017-02-14sched: Fix accidental removal of errout gotoJiri Pirko1-0/+1
2017-02-13net: busy-poll: remove LL_FLUSH_FAILED and LL_FLUSH_BUSYEric Dumazet1-3/+0
2017-02-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller11-112/+778
2017-02-12netfilter: nf_tables: honor NFT_SET_OBJECT in set backend selectionPablo Neira Ayuso3-3/+4
2017-02-12netfilter: nf_tables: add NFTA_RULE_ID attributePablo Neira Ayuso1-0/+26
2017-02-12netfilter: nf_tables: add check_genid to the nfnetlink subsystemPablo Neira Ayuso1-0/+6
2017-02-12netfilter: nfnetlink: allow to check for generation IDPablo Neira Ayuso1-4/+27
2017-02-12netfilter: nfnetlink: add nfnetlink_rcv_skb_batch()Pablo Neira Ayuso1-23/+28
2017-02-12netfilter: nfnetlink: get rid of u_intX_t typesPablo Neira Ayuso1-8/+8
2017-02-12netfilter: nf_ct_expect: nf_ct_expect_insert() returns voidGao Feng1-5/+3
2017-02-12netfilter: nf_ct_sip: Use mod_timer_pending()Gao Feng1-7/+5
2017-02-11net_sched: fix error recovery at qdisc creationEric Dumazet5-23/+19
2017-02-11net: rename dst_neigh_output back to neigh_outputJulian Anastasov2-2/+2
2017-02-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller