Compile ip_pipeline in CentOS 6.5 with kernel 2.6.32-431
GCC 4.4.7, will lead below error:
pipeline_routing_be.c: In function
?pipeline_routing_msg_req_arp_add_handler?:
pipeline_routing_be.c:1817: error: dereferencing pointer ?({anonymous})?
does break strict-aliasing rules
This because the code break strict-aliasing rule.
The patch solve this issue.
Fixes: 0ae7275810f1 (examples/ip_pipeline: add more functions to routing
pipeline)
Signed-off-by: Michael Qiu <michael.qiu at intel.com>
---
examples/ip_pipeline/pipeline/pipeline_routing_be.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/examples/ip_pipeline/pipeline/pipeline_routing_be.c
b/examples/ip_pipeline/pipeline/pipeline_routing_be.c
index 4a95c7d..9baabd0 100644
--- a/examples/ip_pipeline/pipeline/pipeline_routing_be.c
+++ b/examples/ip_pipeline/pipeline/pipeline_routing_be.c
@@ -1461,8 +1461,7 @@ pipeline_routing_msg_req_route_add_handler(struct
pipeline *p, void *msg)
uint64_t macaddr_dst;
uint64_t ethertype = ETHER_TYPE_IPv4;
- *((struct ether_addr *) &macaddr_dst) =
- req->data.ethernet.macaddr;
+ macaddr_dst = *((uint64_t *)&(req->data.ethernet.macaddr));
macaddr_dst = rte_bswap64(macaddr_dst << 16);
entry_arp0.slab[0] =
@@ -1503,8 +1502,7 @@ pipeline_routing_msg_req_route_add_handler(struct
pipeline *p, void *msg)
uint64_t svlan = req->data.l2.qinq.svlan;
uint64_t cvlan = req->data.l2.qinq.cvlan;
- *((struct ether_addr *) &macaddr_dst) =
- req->data.ethernet.macaddr;
+ macaddr_dst = *((uint64_t *)&(req->data.ethernet.macaddr));
macaddr_dst = rte_bswap64(macaddr_dst << 16);
entry_arp0.slab[0] = rte_bswap64((svlan << 48) |
@@ -1563,8 +1561,7 @@ pipeline_routing_msg_req_route_add_handler(struct
pipeline *p, void *msg)
uint64_t label3 = req->data.l2.mpls.labels[3];
uint32_t n_labels = req->data.l2.mpls.n_labels;
- *((struct ether_addr *) &macaddr_dst) =
- req->data.ethernet.macaddr;
+ macaddr_dst = *((uint64_t *)&(req->data.ethernet.macaddr));
macaddr_dst = rte_bswap64(macaddr_dst << 16);
switch (n_labels) {
@@ -1814,7 +1811,7 @@ pipeline_routing_msg_req_arp_add_handler(struct pipeline
*p, void *msg)
return rsp;
}
- *((struct ether_addr *) &entry.macaddr) = req->macaddr;
+ entry.macaddr = *((uint64_t *)&(req->macaddr));
entry.macaddr = entry.macaddr << 16;
rsp->status = rte_pipeline_table_entry_add(p->p,
--
1.9.3
