[PATCH v3 32/39] bpf: use C11 alignas

[Tyler Retzlaff]

* Move __rte_aligned from the end of {struct,union} definitions to
  be between {struct,union} and tag.

  The placement between {struct,union} and the tag allows the desired
  alignment to be imparted on the type regardless of the toolchain being
  used for all of GCC, LLVM, MSVC compilers building both C and C++.

* Replace use of __rte_aligned(a) on variables/fields with alignas(a).

Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
---
 lib/bpf/bpf_pkt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/bpf/bpf_pkt.c b/lib/bpf/bpf_pkt.c
index 793a75d..aaca935 100644
--- a/lib/bpf/bpf_pkt.c
+++ b/lib/bpf/bpf_pkt.c
@@ -23,7 +23,7 @@
  * information about installed BPF rx/tx callback
  */
 
-struct bpf_eth_cbi {
+struct __rte_cache_aligned bpf_eth_cbi {
 	/* used by both data & control path */
 	RTE_ATOMIC(uint32_t) use;    /*usage counter */
 	const struct rte_eth_rxtx_callback *cb;  /* callback handle */
@@ -33,7 +33,7 @@ struct bpf_eth_cbi {
 	LIST_ENTRY(bpf_eth_cbi) link;
 	uint16_t port;
 	uint16_t queue;
-} __rte_cache_aligned;
+};
 
 /*
  * Odd number means that callback is used by datapath.
-- 
1.8.3.1