[PATCH v2 05/14] pipeline: 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 <roret...@linux.microsoft.com>
---
 lib/pipeline/rte_table_action.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/lib/pipeline/rte_table_action.c b/lib/pipeline/rte_table_action.c
index dfdbc66..87c3e0e 100644
--- a/lib/pipeline/rte_table_action.c
+++ b/lib/pipeline/rte_table_action.c
@@ -465,11 +465,11 @@ struct encap_qinq_data {
        ((((uint64_t)(s)) & 0x1LLU) << 8) |                \
        (((uint64_t)(ttl)) & 0xFFLLU)))
 
-struct encap_mpls_data {
+struct __rte_aligned(2) encap_mpls_data {
        struct rte_ether_hdr ether;
        uint32_t mpls[RTE_TABLE_ACTION_MPLS_LABELS_MAX];
        uint32_t mpls_count;
-} __rte_packed __rte_aligned(2);
+} __rte_packed;
 
 #define PPP_PROTOCOL_IP                                    0x0021
 
@@ -487,42 +487,42 @@ struct encap_pppoe_data {
 
 #define IP_PROTO_UDP                                       17
 
-struct encap_vxlan_ipv4_data {
+struct __rte_aligned(2) encap_vxlan_ipv4_data {
        struct rte_ether_hdr ether;
        struct rte_ipv4_hdr ipv4;
        struct rte_udp_hdr udp;
        struct rte_vxlan_hdr vxlan;
-} __rte_packed __rte_aligned(2);
+} __rte_packed;
 
-struct encap_vxlan_ipv4_vlan_data {
+struct __rte_aligned(2) encap_vxlan_ipv4_vlan_data {
        struct rte_ether_hdr ether;
        struct rte_vlan_hdr vlan;
        struct rte_ipv4_hdr ipv4;
        struct rte_udp_hdr udp;
        struct rte_vxlan_hdr vxlan;
-} __rte_packed __rte_aligned(2);
+} __rte_packed;
 
-struct encap_vxlan_ipv6_data {
+struct __rte_aligned(2) encap_vxlan_ipv6_data {
        struct rte_ether_hdr ether;
        struct rte_ipv6_hdr ipv6;
        struct rte_udp_hdr udp;
        struct rte_vxlan_hdr vxlan;
-} __rte_packed __rte_aligned(2);
+} __rte_packed;
 
-struct encap_vxlan_ipv6_vlan_data {
+struct __rte_aligned(2) encap_vxlan_ipv6_vlan_data {
        struct rte_ether_hdr ether;
        struct rte_vlan_hdr vlan;
        struct rte_ipv6_hdr ipv6;
        struct rte_udp_hdr udp;
        struct rte_vxlan_hdr vxlan;
-} __rte_packed __rte_aligned(2);
+} __rte_packed;
 
-struct encap_qinq_pppoe_data {
+struct __rte_aligned(2) encap_qinq_pppoe_data {
        struct rte_ether_hdr ether;
        struct rte_vlan_hdr svlan;
        struct rte_vlan_hdr cvlan;
        struct pppoe_ppp_hdr pppoe_ppp;
-} __rte_packed __rte_aligned(2);
+} __rte_packed;
 
 static size_t
 encap_data_size(struct rte_table_action_encap_config *encap)
-- 
1.8.3.1