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authorHans Wippel <hwippel@linux.ibm.com>2018-06-28 19:05:10 +0200
committerDavid S. Miller <davem@davemloft.net>2018-06-30 20:42:26 +0900
commitbe244f28d22f77d939ba2b973c102ad2b49d3496 (patch)
treec819462ffbf01974dcc81d7069050cb3a384efd0 /net/smc/smc_rx.c
parentc758dfddc1b5b1c9b8c64e5e4bb9bf24b74f4a59 (diff)
net/smc: add SMC-D support in data transfer
The data transfer and CDC message headers differ in SMC-R and SMC-D. This patch adds support for the SMC-D data transfer to the existing SMC code. It consists of the following: * SMC-D CDC support * SMC-D tx support * SMC-D rx support The CDC header is stored at the beginning of the receive buffer. Thus, a rx_offset variable is added for the CDC header offset within the buffer (0 for SMC-R). Signed-off-by: Hans Wippel <hwippel@linux.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Suggested-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_rx.c')
-rw-r--r--net/smc/smc_rx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/smc/smc_rx.c b/net/smc/smc_rx.c
index 3d77b383cccd..b329803c8339 100644
--- a/net/smc/smc_rx.c
+++ b/net/smc/smc_rx.c
@@ -305,7 +305,7 @@ int smc_rx_recvmsg(struct smc_sock *smc, struct msghdr *msg,
target = sock_rcvlowat(sk, flags & MSG_WAITALL, len);
/* we currently use 1 RMBE per RMB, so RMBE == RMB base addr */
- rcvbuf_base = conn->rmb_desc->cpu_addr;
+ rcvbuf_base = conn->rx_off + conn->rmb_desc->cpu_addr;
do { /* while (read_remaining) */
if (read_done >= target || (pipe && read_done))