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author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-01-09 16:55:23 +0100 |
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committer | David S. Miller <davem@davemloft.net> | 2017-01-09 22:07:40 +0100 |
commit | e6727f39004bd95725342b3b343a14c7d59df07f (patch) | |
tree | 376bebbead3f9f2cabaddd75cfd34c32fe16ffda /net/smc/smc_tx.h | |
parent | smc: connection data control (CDC) (diff) | |
download | linux-e6727f39004bd95725342b3b343a14c7d59df07f.tar.xz linux-e6727f39004bd95725342b3b343a14c7d59df07f.zip |
smc: send data (through RDMA)
copy data to kernel send buffer, and trigger RDMA write
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_tx.h')
-rw-r--r-- | net/smc/smc_tx.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/net/smc/smc_tx.h b/net/smc/smc_tx.h new file mode 100644 index 000000000000..931c66645624 --- /dev/null +++ b/net/smc/smc_tx.h @@ -0,0 +1,34 @@ +/* + * Shared Memory Communications over RDMA (SMC-R) and RoCE + * + * Manage send buffer + * + * Copyright IBM Corp. 2016 + * + * Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com> + */ + +#ifndef SMC_TX_H +#define SMC_TX_H + +#include <linux/socket.h> +#include <linux/types.h> + +#include "smc.h" +#include "smc_cdc.h" + +static inline int smc_tx_prepared_sends(struct smc_connection *conn) +{ + union smc_host_cursor sent, prep; + + smc_curs_write(&sent, smc_curs_read(&conn->tx_curs_sent, conn), conn); + smc_curs_write(&prep, smc_curs_read(&conn->tx_curs_prep, conn), conn); + return smc_curs_diff(conn->sndbuf_size, &sent, &prep); +} + +void smc_tx_init(struct smc_sock *smc); +int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len); +int smc_tx_sndbuf_nonempty(struct smc_connection *conn); +void smc_tx_sndbuf_nonfull(struct smc_sock *smc); + +#endif /* SMC_TX_H */ |