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| author | Ursula Braun <ubraun@linux.ibm.com> | 2020-09-03 21:53:16 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-04 01:52:33 +0200 |
| commit | 2d2bfeb8c5c8c95a93c473ca2c7d07cad6943a34 (patch) | |
| tree | 73704a752703f35af142d29ceb8ee4d499216860 /net | |
| parent | net/smc: fix toleration of fake add_link messages (diff) | |
| download | linux-2d2bfeb8c5c8c95a93c473ca2c7d07cad6943a34.tar.xz linux-2d2bfeb8c5c8c95a93c473ca2c7d07cad6943a34.zip | |
net/smc: set rx_off for SMCR explicitly
SMC tries to make use of SMCD first. If a problem shows up,
it tries to switch to SMCR. If the SMCD initializing problem shows
up after the SMCD connection has already been initialized, field
rx_off keeps the wrong SMCD value for SMCR, which results in corrupted
data at the receiver.
This patch adds an explicit (re-)setting of field rx_off to zero if the
connection uses SMCR.
Fixes: be244f28d22f ("net/smc: add SMC-D support in data transfer")
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/smc/smc_core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index b42fa3b00d00..a6ac0eb20c99 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -1356,6 +1356,8 @@ create: if (ini->is_smcd) { conn->rx_off = sizeof(struct smcd_cdc_msg); smcd_cdc_rx_init(conn); /* init tasklet for this conn */ + } else { + conn->rx_off = 0; } #ifndef KERNEL_HAS_ATOMIC64 spin_lock_init(&conn->acurs_lock); |