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SubjectRe: [PATCH] IB/core: replace memcpy with ether_addr_copy
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On Thu, 2017-08-24 at 21:11 +0530, Himanshu Jha wrote:
> Use ether_addr_copy to copy an ethernet address of size ETH_ALEN
> instead of memcpy.
[]
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
[]
> @@ -798,7 +798,7 @@ int rdma_addr_find_l2_eth_by_grh(const union ib_gid *sgid,
> if (ret)
> return ret;
>
> - memcpy(dmac, dev_addr.dst_dev_addr, ETH_ALEN);
> + ether_addr_copy(dmac, dev_addr.dst_dev_addr);
> dev = dev_get_by_index(&init_net, dev_addr.bound_dev_if);
> if (!dev)
> return -ENODEV;
> @@ -831,7 +831,7 @@ int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id)
> if (ret)
> return ret;
>
> - memcpy(smac, dev_addr.src_dev_addr, ETH_ALEN);
> + ether_addr_copy(smac, dev_addr.src_dev_addr);
> return ret;
> }
> EXPORT_SYMBOL(rdma_addr_find_smac_by_sgid);

Both dmac and smac are function arguments.
What guarantees these to be
aligned properly?

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