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nvme: fix _nvme_ns_cmd_split_sgl_request for last SGE not page aligned

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Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I2b6a22591d0a5f7435d9fd9dd8d6a1c854da3d89

Reviewed-on: https://review.gerrithub.io/371978
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Paweł Niedźwiecki <pawelx.niedzwiecki@intel.com>
This commit is contained in:
Jim Harris 2017-07-31 08:10:44 -07:00
parent bab34df6ca
commit 0b33e77e4c
2 changed files with 25 additions and 1 deletions
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6
lib/nvme/nvme_ns_cmd.c
View File

@ -271,6 +271,12 @@ _nvme_ns_cmd_split_sgl_request(struct spdk_nvme_ns *ns,
if (req_current_length < req->payload_size) {
args->next_sge_fn(args->cb_arg, (void **)&address, &sge_length);
}
/*
* If the next SGE is not page aligned, we will need to create a child
* request for what we have so far, and then start a new child request for
* the next SGE.
*/
start_valid = _is_page_aligned(address);
}
if (start_valid && end_valid && !last_sge) {

20
test/lib/nvme/sgl/sgl.c
View File

@ -288,6 +288,23 @@ static void build_io_request_10(struct io_request *req)
}
}
static void build_io_request_11(struct io_request *req)
{
/* This test case focuses on the last element not starting on a page boundary. */
const size_t req_len[] = { 512, 512 };
const size_t req_off[] = { 0xe00, 0x800 };
struct sgl_element *iovs = req->iovs;
uint32_t i;
req->nseg = SPDK_COUNTOF(req_len);
assert(SPDK_COUNTOF(req_len) == SPDK_COUNTOF(req_off));
for (i = 0; i < req->nseg; i++) {
iovs[i].base = spdk_dma_zmalloc(req_off[i] + req_len[i], 0x4000, NULL);
iovs[i].offset = req_off[i];
iovs[i].len = req_len[i];
}
}
typedef void (*nvme_build_io_req_fn_t)(struct io_request *req);
static void
@ -498,7 +515,8 @@ int main(int argc, char **argv)
|| TEST(build_io_request_7)
|| TEST(build_io_request_8)
|| TEST(build_io_request_9)
|| TEST(build_io_request_10)) {
|| TEST(build_io_request_10)
|| TEST(build_io_request_11)) {
#undef TEST
rc = 1;
printf("%s: failed sgl tests\n", iter->name);