net/smc: use a constant for control message length
The sizeof(struct smc_cdc_msg) evaluates to 48 bytes instead of the required 44 bytes. We need to use the constant value of SMC_WR_TX_SIZE to set and check the control message length. Signed-off-by: Karsten Graul <kgraul@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -269,7 +269,7 @@ static void smc_cdc_rx_handler(struct ib_wc *wc, void *buf)
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if (wc->byte_len < offsetof(struct smc_cdc_msg, reserved))
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return; /* short message */
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if (cdc->len != sizeof(*cdc))
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if (cdc->len != SMC_WR_TX_SIZE)
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return; /* invalid message */
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smc_cdc_msg_recv(cdc, link, wc->wr_id);
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}
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@ -465,7 +465,7 @@ create:
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rc = smc_link_determine_gid(conn->lgr);
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}
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conn->local_tx_ctrl.common.type = SMC_CDC_MSG_TYPE;
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conn->local_tx_ctrl.len = sizeof(struct smc_cdc_msg);
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conn->local_tx_ctrl.len = SMC_WR_TX_SIZE;
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#ifndef KERNEL_HAS_ATOMIC64
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spin_lock_init(&conn->acurs_lock);
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#endif
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