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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-08 12:27:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-08 12:27:44 -0700
commitb20dcab9d4589ef9918a13c888c5493945adfc13 (patch)
treed18333ef4db91e274ebcf989cc8cdc4ac5ab9392 /net
parented81e780a7dd5698a986f246fad6a1d8d0b6f9ce (diff)
parente6b80757700a11315dd81b161f8d86099214c185 (diff)
downloadtalos-op-linux-b20dcab9d4589ef9918a13c888c5493945adfc13.tar.gz
talos-op-linux-b20dcab9d4589ef9918a13c888c5493945adfc13.zip
Merge tag 'llvmlinux-for-v3.16' of git://git.linuxfoundation.org/llvmlinux/kernel
Pull LLVM patches from Behan Webster: "Next set of patches to support compiling the kernel with clang. They've been soaking in linux-next since the last merge window. More still in the works for the next merge window..." * tag 'llvmlinux-for-v3.16' of git://git.linuxfoundation.org/llvmlinux/kernel: arm, unwind, LLVMLinux: Enable clang to be used for unwinding the stack ARM: LLVMLinux: Change "extern inline" to "static inline" in glue-cache.h all: LLVMLinux: Change DWARF flag to support gcc and clang net: netfilter: LLVMLinux: vlais-netfilter crypto: LLVMLinux: aligned-attribute.patch
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/xt_repldata.h22
1 files changed, 17 insertions, 5 deletions
diff --git a/net/netfilter/xt_repldata.h b/net/netfilter/xt_repldata.h
index 6efe4e5a81c6..8fd324116e6f 100644
--- a/net/netfilter/xt_repldata.h
+++ b/net/netfilter/xt_repldata.h
@@ -5,23 +5,35 @@
* they serve as the hanging-off data accessed through repl.data[].
*/
+/* tbl has the following structure equivalent, but is C99 compliant:
+ * struct {
+ * struct type##_replace repl;
+ * struct type##_standard entries[nhooks];
+ * struct type##_error term;
+ * } *tbl;
+ */
+
#define xt_alloc_initial_table(type, typ2) ({ \
unsigned int hook_mask = info->valid_hooks; \
unsigned int nhooks = hweight32(hook_mask); \
unsigned int bytes = 0, hooknum = 0, i = 0; \
struct { \
struct type##_replace repl; \
- struct type##_standard entries[nhooks]; \
- struct type##_error term; \
- } *tbl = kzalloc(sizeof(*tbl), GFP_KERNEL); \
+ struct type##_standard entries[]; \
+ } *tbl; \
+ struct type##_error *term; \
+ size_t term_offset = (offsetof(typeof(*tbl), entries[nhooks]) + \
+ __alignof__(*term) - 1) & ~(__alignof__(*term) - 1); \
+ tbl = kzalloc(term_offset + sizeof(*term), GFP_KERNEL); \
if (tbl == NULL) \
return NULL; \
+ term = (struct type##_error *)&(((char *)tbl)[term_offset]); \
strncpy(tbl->repl.name, info->name, sizeof(tbl->repl.name)); \
- tbl->term = (struct type##_error)typ2##_ERROR_INIT; \
+ *term = (struct type##_error)typ2##_ERROR_INIT; \
tbl->repl.valid_hooks = hook_mask; \
tbl->repl.num_entries = nhooks + 1; \
tbl->repl.size = nhooks * sizeof(struct type##_standard) + \
- sizeof(struct type##_error); \
+ sizeof(struct type##_error); \
for (; hook_mask != 0; hook_mask >>= 1, ++hooknum) { \
if (!(hook_mask & 1)) \
continue; \
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