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authorHans Wippel <hwippel@linux.ibm.com>2018-06-28 20:05:10 +0300
committerDavid S. Miller <davem@davemloft.net>2018-06-30 14:42:26 +0300
commitbe244f28d22f77d939ba2b973c102ad2b49d3496 (patch)
treec819462ffbf01974dcc81d7069050cb3a384efd0 /net/smc/smc.h
parentc758dfddc1b5b1c9b8c64e5e4bb9bf24b74f4a59 (diff)
downloadlinux-be244f28d22f77d939ba2b973c102ad2b49d3496.tar.xz
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.h')
-rw-r--r--net/smc/smc.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 7c86f716a92e..8c6231011779 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -183,6 +183,11 @@ struct smc_connection {
spinlock_t acurs_lock; /* protect cursors */
#endif
struct work_struct close_work; /* peer sent some closing */
+ struct tasklet_struct rx_tsklet; /* Receiver tasklet for SMC-D */
+ u8 rx_off; /* receive offset:
+ * 0 for SMC-R, 32 for SMC-D
+ */
+ u64 peer_token; /* SMC-D token of peer */
};
struct smc_sock { /* smc sock container */