4b92ffb3f1
When the specified buffer size to spdk_bdev_io_get_buf() is greater than the permitted maximum, spdk_bdev_io_get_buf() asserts simply and doesn't call the specified callback function. SPDK SCSI library doesn't allocate read buffer and specifies expected read buffer size, and expects that it is allocated by spdk_bdev_io_get_buf(). Bdev perf tool also doesn't allocate read buffer and specifies expected read buffer size, and expects that it is allocated by spdk_bdev_io_get_buf(). When we support DIF insert and strip in iSCSI target, the read buffer size iSCSI initiator requests and the read buffer size iSCSI target requests will become different. Even after that, iSCSI initiator and iSCSI target will negotiate correctly not to cause buffer overflow in spdk_bdev_io_get_buf(), but if iSCSI initiator ignores the result of negotiation, iSCSI initiator can request read buffer size larger than the permitted maximum, and can cause failure in iSCSI target. This is very flagile and should be avoided. This patch do the following - Add the completion status of spdk_bdev_io_get_buf() to spdk_bdev_io_get_buf_cb(), - spdk_bdev_io_get_buf() calls spdk_bdev_io_get_buf_cb() by setting success to false, and return. - spdk_bdev_io_get_buf_cb() in each bdev module calls assert if success is false. Subsequent patches will process the case that success is false in spdk_bdev_io_get_buf_cb(). Change-Id: I76429a86e18a69aa085a353ac94743296d270b82 Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-on: https://review.gerrithub.io/c/446045 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Ziye Yang <ziye.yang@intel.com> Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com> |
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| .. | ||
| env | ||
| ctx.c | ||
| ctx.h | ||
| data.c | ||
| data.h | ||
| dobj.c | ||
| dobj.h | ||
| Makefile | ||
| stats.c | ||
| stats.h | ||
| utils.c | ||
| utils.h | ||
| vbdev_ocf_rpc.c | ||
| vbdev_ocf.c | ||
| vbdev_ocf.h | ||