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Diffstat (limited to 'drivers/target/iscsi/cxgbit')
-rw-r--r--drivers/target/iscsi/cxgbit/cxgbit_main.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/target/iscsi/cxgbit/cxgbit_main.c b/drivers/target/iscsi/cxgbit/cxgbit_main.c
index bd37f2afadea..c6678dc8dd41 100644
--- a/drivers/target/iscsi/cxgbit/cxgbit_main.c
+++ b/drivers/target/iscsi/cxgbit/cxgbit_main.c
@@ -33,11 +33,18 @@ static void cxgbit_set_mdsl(struct cxgbit_device *cdev)
struct cxgb4_lld_info *lldi = &cdev->lldi;
u32 mdsl;
-#define ULP2_MAX_PKT_LEN 16224
-#define ISCSI_PDU_NONPAYLOAD_LEN 312
- mdsl = min_t(u32, lldi->iscsi_iolen - ISCSI_PDU_NONPAYLOAD_LEN,
- ULP2_MAX_PKT_LEN - ISCSI_PDU_NONPAYLOAD_LEN);
- mdsl = min_t(u32, mdsl, 8192);
+#define CXGBIT_T5_MAX_PDU_LEN 16224
+#define CXGBIT_PDU_NONPAYLOAD_LEN 312 /* 48(BHS) + 256(AHS) + 8(Digest) */
+ if (is_t5(lldi->adapter_type)) {
+ mdsl = min_t(u32, lldi->iscsi_iolen - CXGBIT_PDU_NONPAYLOAD_LEN,
+ CXGBIT_T5_MAX_PDU_LEN - CXGBIT_PDU_NONPAYLOAD_LEN);
+ } else {
+ mdsl = lldi->iscsi_iolen - CXGBIT_PDU_NONPAYLOAD_LEN;
+ mdsl = min(mdsl, 16384U);
+ }
+
+ mdsl = round_down(mdsl, 4);
+ mdsl = min_t(u32, mdsl, 4 * PAGE_SIZE);
mdsl = min_t(u32, mdsl, (MAX_SKB_FRAGS - 1) * PAGE_SIZE);
cdev->mdsl = mdsl;