#ifndef __NET_GUE_H #define __NET_GUE_H /* Definitions for the GUE header, standard and private flags, lengths * of optional fields are below. * * Diagram of GUE header: * * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * |Ver|C| Hlen | Proto/ctype | Standard flags |P| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | | * ~ Fields (optional) ~ * | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Private flags (optional, P bit is set) | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | | * ~ Private fields (optional) ~ * | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * * C bit indicates contol message when set, data message when unset. * For a control message, proto/ctype is interpreted as a type of * control message. For data messages, proto/ctype is the IP protocol * of the next header. * * P bit indicates private flags field is present. The private flags * may refer to options placed after this field. */ struct guehdr { union { struct { #if defined(__LITTLE_ENDIAN_BITFIELD) __u8 hlen:5, control:1, version:2; #elif defined (__BIG_ENDIAN_BITFIELD) __u8 version:2, control:1, hlen:5; #else #error "Please fix " #endif __u8 proto_ctype; __u16 flags; }; __u32 word; }; }; /* Standard flags in GUE header */ #define GUE_FLAG_PRIV htons(1<<0) /* Private flags are in options */ #define GUE_LEN_PRIV 4 #define GUE_FLAGS_ALL (GUE_FLAG_PRIV) /* Private flags in the private option extension */ #define GUE_PFLAG_REMCSUM htonl(1 << 31) #define GUE_PLEN_REMCSUM 4 #define GUE_PFLAGS_ALL (GUE_PFLAG_REMCSUM) /* Functions to compute options length corresponding to flags. * If we ever have a lot of flags this can be potentially be * converted to a more optimized algorithm (table lookup * for instance). */ static inline size_t guehdr_flags_len(__be16 flags) { return ((flags & GUE_FLAG_PRIV) ? GUE_LEN_PRIV : 0); } static inline size_t guehdr_priv_flags_len(__be32 flags) { return 0; } /* Validate standard and private flags. Returns non-zero (meaning invalid) * if there is an unknown standard or private flags, or the options length for * the flags exceeds the options length specific in hlen of the GUE header. */ static inline int validate_gue_flags(struct guehdr *guehdr, size_t optlen) { size_t len; __be32 flags = guehdr->flags; if (flags & ~GUE_FLAGS_ALL) return 1; len = guehdr_flags_len(flags); if (len > optlen) return 1; if (flags & GUE_FLAG_PRIV) { /* Private flags are last four bytes accounted in * guehdr_flags_len */ flags = *(__be32 *)((void *)&guehdr[1] + len - GUE_LEN_PRIV); if (flags & ~GUE_PFLAGS_ALL) return 1; len += guehdr_priv_flags_len(flags); if (len > optlen) return 1; } return 0; } #endif 692log plain d---------bridge111log plain -rw-r--r--drmP.h25758log plain -rw-r--r--drm_agpsupport.h3867log plain -rw-r--r--drm_atomic.h14443log plain -rw-r--r--drm_atomic_helper.h10607log plain -rw-r--r--drm_auth.h2260log plain -rw-r--r--drm_blend.h2700log plain -rw-r--r--drm_bridge.h7977log plain -rw-r--r--drm_cache.h1763log plain -rw-r--r--drm_color_mgmt.h2166log plain -rw-r--r--drm_connector.h28613log plain -rw-r--r--drm_crtc.h28999log plain -rw-r--r--drm_crtc_helper.h3301log plain -rw-r--r--drm_debugfs_crc.h2670log plain -rw-r--r--drm_displayid.h2850log plain -rw-r--r--drm_dp_dual_mode_helper.h4532log plain -rw-r--r--drm_dp_helper.h30638log plain -rw-r--r--drm_dp_mst_helper.h16260log plain -rw-r--r--drm_drv.h14861log plain -rw-r--r--drm_edid.h14335log plain -rw-r--r--drm_encoder.h8160log plain -rw-r--r--drm_encoder_slave.h6583log plain -rw-r--r--drm_fb_cma_helper.h1929log plain -rw-r--r--drm_fb_helper.h15125log plain -rw-r--r--drm_fixed.h4825log plain -rw-r--r--drm_flip_work.h3071log plain -rw-r--r--drm_fourcc.h2748log plain -rw-r--r--drm_framebuffer.h9623log plain -rw-r--r--drm_gem.h8052log plain -rw-r--r--drm_gem_cma_helper.h2286log plain -rw-r--r--drm_global.h2011log plain -rw-r--r--drm_hashtab.h3139log plain -rw-r--r--drm_irq.h6323log plain -rw-r--r--drm_legacy.h6933log plain -rw-r--r--drm_mem_util.h2468log plain -rw-r--r--drm_mipi_dsi.h10327log plain -rw-r--r--drm_mm.h11462log plain -rw-r--r--drm_mode_config.h23728log plain -rw-r--r--drm_mode_object.h4911log plain -rw-r--r--drm_modes.h17078log plain -rw-r--r--drm_modeset_helper.h1576log plain -rw-r--r--drm_modeset_helper_vtables.h41180log plain -rw-r--r--drm_modeset_lock.h4241log plain -rw-r--r--drm_of.h2034log plain -rw-r--r--drm_os_linux.h2230log plain -rw-r--r--drm_panel.h7079log plain -rw-r--r--drm_pciids.h68035log plain -rw-r--r--drm_plane.h19435log plain -rw-r--r--drm_plane_helper.h3186log plain -rw-r--r--drm_print.h3232log plain -rw-r--r--drm_property.h11460log plain -rw-r--r--drm_rect.h5103log plain -rw-r--r--drm_simple_kms_helper.h4090log plain -rw-r--r--drm_sysfs.h300log plain -rw-r--r--drm_vma_manager.h7840log plain -rw-r--r--gma_drm.h1033log plain d---------i2c109log plain