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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>
This commit is contained in:
Karsten Graul 2018-02-28 12:44:07 +01:00 committed by David S. Miller
parent 4e09ff5362
commit cbba07a726
2 changed files with 2 additions and 2 deletions
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2
net/smc/smc_cdc.c
View File

@ -269,7 +269,7 @@ static void smc_cdc_rx_handler(struct ib_wc *wc, void *buf)
if (wc->byte_len < offsetof(struct smc_cdc_msg, reserved))
return; /* short message */
if (cdc->len != sizeof(*cdc))
if (cdc->len != SMC_WR_TX_SIZE)
return; /* invalid message */
smc_cdc_msg_recv(cdc, link, wc->wr_id);
}

2
net/smc/smc_core.c
View File

@ -465,7 +465,7 @@ int smc_conn_create(struct smc_sock *smc, __be32 peer_in_addr,
rc = smc_link_determine_gid(conn->lgr);
}
conn->local_tx_ctrl.common.type = SMC_CDC_MSG_TYPE;
conn->local_tx_ctrl.len = sizeof(struct smc_cdc_msg);
conn->local_tx_ctrl.len = SMC_WR_TX_SIZE;
#ifndef KERNEL_HAS_ATOMIC64
spin_lock_init(&conn->acurs_lock);
#endif