diff mbox series

[v6,21/30] examples/l3fwd-power: replace packed attributes

Message ID 1732668761-5556-22-git-send-email-andremue@linux.microsoft.com (mailing list archive)
State Superseded
Delegated to: David Marchand
Headers
Series fix packing of structs when building with MSVC |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Andre Muezerie Nov. 27, 2024, 12:52 a.m. UTC 
MSVC struct packing is not compatible with GCC. Replace macro
__rte_packed with __rte_packed_begin to push existing pack value
and set packing to 1-byte and macro __rte_packed_end to restore
the pack value prior to the push.

Macro __rte_packed_end is deliberately utilized to trigger a
MSVC compiler warning if no existing packing has been pushed allowing
easy identification of locations where the __rte_packed_begin is
missing.

Signed-off-by: Andre Muezerie <andremue@linux.microsoft.com>
---
 examples/l3fwd-power/main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index ae8b55924e..65b6bd3756 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -282,21 +282,23 @@  static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
 #define DEFAULT_HASH_FUNC       rte_jhash
 #endif
 
+__rte_packed_begin
 struct ipv4_5tuple {
 	uint32_t ip_dst;
 	uint32_t ip_src;
 	uint16_t port_dst;
 	uint16_t port_src;
 	uint8_t  proto;
-} __rte_packed;
+} __rte_packed_end;
 
+__rte_packed_begin
 struct ipv6_5tuple {
 	uint8_t  ip_dst[IPV6_ADDR_LEN];
 	uint8_t  ip_src[IPV6_ADDR_LEN];
 	uint16_t port_dst;
 	uint16_t port_src;
 	uint8_t  proto;
-} __rte_packed;
+} __rte_packed_end;
 
 struct ipv4_l3fwd_route {
 	struct ipv4_5tuple key;