tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
scsi: target: cxgbit: Increase max DataSegmentLength
Current value of max DataSegmentLength is 8K. T5/T6 adapters support
DataSegmentLength upto 16K. Increase max DataSegmentLength.
Link: https://lore.kernel.org/r/1634135087-4996-1-git-send-email-varun@chelsio.com
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
authored by
Varun Prakash
and committed by
Martin K. Petersen
7f96c7a6
f347c268
+12
-5
+12
-5
drivers/target/iscsi/cxgbit/cxgbit_main.c
+12
-5
drivers/target/iscsi/cxgbit/cxgbit_main.c
···
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struct cxgb4_lld_info *lldi = &cdev->lldi;
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u32 mdsl;
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-
#define ULP2_MAX_PKT_LEN 16224
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-
#define ISCSI_PDU_NONPAYLOAD_LEN 312
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mdsl = min_t(u32, lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN,
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ULP2_MAX_PKT_LEN - ISCSI_PDU_NONPAYLOAD_LEN);
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mdsl = min_t(u32, mdsl, 8192);
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+
#define CXGBIT_T5_MAX_PDU_LEN 16224
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#define CXGBIT_PDU_NONPAYLOAD_LEN 312 /* 48(BHS) + 256(AHS) + 8(Digest) */
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if (is_t5(lldi->adapter_type)) {
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mdsl = min_t(u32, lldi->iscsi_iolen - CXGBIT_PDU_NONPAYLOAD_LEN,
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CXGBIT_T5_MAX_PDU_LEN - CXGBIT_PDU_NONPAYLOAD_LEN);
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} else {
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mdsl = lldi->iscsi_iolen - CXGBIT_PDU_NONPAYLOAD_LEN;
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mdsl = min(mdsl, 16384U);
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+
}
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+
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mdsl = round_down(mdsl, 4);
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mdsl = min_t(u32, mdsl, 4 * PAGE_SIZE);
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mdsl = min_t(u32, mdsl, (MAX_SKB_FRAGS - 1) * PAGE_SIZE);
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cdev->mdsl = mdsl;