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The last bit written to a completion descriptor by hardware is the color bit. Driver must read all other descriptor fields only after reading the color bit to avoid reading stale descriptor fields. There is a rmb() after reading the color bit to avoid any compiler/cpu reordering of the reads. The color bit is the generation bit that toggles each pass through the completion descriptor ring. Signed-off-by: Scott Feldman <scofeldm@cisco.com> Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com> Signed-off-by: Roopa Prabhu <roprabhu@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| cq_desc.h | ||
| cq_enet_desc.h | ||
| enic_main.c | ||
| enic_res.c | ||
| enic_res.h | ||
| enic.h | ||
| Makefile | ||
| rq_enet_desc.h | ||
| vnic_cq.c | ||
| vnic_cq.h | ||
| vnic_dev.c | ||
| vnic_dev.h | ||
| vnic_devcmd.h | ||
| vnic_enet.h | ||
| vnic_intr.c | ||
| vnic_intr.h | ||
| vnic_nic.h | ||
| vnic_resource.h | ||
| vnic_rq.c | ||
| vnic_rq.h | ||
| vnic_rss.h | ||
| vnic_stats.h | ||
| vnic_wq.c | ||
| vnic_wq.h | ||
| wq_enet_desc.h | ||