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net/smc: move smc_core specific code from smc.h to smc_core 

SMC connection and buffer handling belong to smc_core. So, this patch
moves this code from smc.h to smc_core.

Signed-off-by: Hans Wippel <hwippel@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hans Wippel 2018-05-18 09:34:14 +02:00 committed by David S. Miller
parent 95d8d26306
commit 2f6becaf79
3 changed files with 39 additions and 41 deletions
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41
net/smc/smc.h
View File

@ -220,41 +220,6 @@ static inline u32 ntoh24(u8 *net)
return be32_to_cpu(t);
}
#define SMC_BUF_MIN_SIZE 16384 /* minimum size of an RMB */
#define SMC_RMBE_SIZES 16 /* number of distinct sizes for an RMBE */
/* theoretically, the RFC states that largest size would be 512K,
* i.e. compressed 5 and thus 6 sizes (0..5), despite
* struct smc_clc_msg_accept_confirm.rmbe_size being a 4 bit value (0..15)
*/
/* convert the RMB size into the compressed notation - minimum 16K.
* In contrast to plain ilog2, this rounds towards the next power of 2,
* so the socket application gets at least its desired sndbuf / rcvbuf size.
*/
static inline u8 smc_compress_bufsize(int size)
{
u8 compressed;
if (size <= SMC_BUF_MIN_SIZE)
return 0;
size = (size - 1) >> 14;
compressed = ilog2(size) + 1;
if (compressed >= SMC_RMBE_SIZES)
compressed = SMC_RMBE_SIZES - 1;
return compressed;
}
/* convert the RMB size from compressed notation into integer */
static inline int smc_uncompress_bufsize(u8 compressed)
{
u32 size;
size = 0x00000001 << (((int)compressed) + 14);
return (int)size;
}
#ifdef CONFIG_XFRM
static inline bool using_ipsec(struct smc_sock *smc)
{
@ -268,12 +233,6 @@ static inline bool using_ipsec(struct smc_sock *smc)
}
#endif
struct smc_clc_msg_local;
void smc_conn_free(struct smc_connection *conn);
int smc_conn_create(struct smc_sock *smc,
struct smc_ib_device *smcibdev, u8 ibport,
struct smc_clc_msg_local *lcl, int srv_first_contact);
struct sock *smc_accept_dequeue(struct sock *parent, struct socket *new_sock);
void smc_close_non_accepted(struct sock *sk);

27
net/smc/smc_core.c
View File

@ -543,6 +543,33 @@ out:
return rc ? rc : local_contact;
}
/* convert the RMB size into the compressed notation - minimum 16K.
* In contrast to plain ilog2, this rounds towards the next power of 2,
* so the socket application gets at least its desired sndbuf / rcvbuf size.
*/
static u8 smc_compress_bufsize(int size)
{
u8 compressed;
if (size <= SMC_BUF_MIN_SIZE)
return 0;
size = (size - 1) >> 14;
compressed = ilog2(size) + 1;
if (compressed >= SMC_RMBE_SIZES)
compressed = SMC_RMBE_SIZES - 1;
return compressed;
}
/* convert the RMB size from compressed notation into integer */
int smc_uncompress_bufsize(u8 compressed)
{
u32 size;
size = 0x00000001 << (((int)compressed) + 14);
return (int)size;
}
/* try to reuse a sndbuf or rmb description slot for a certain
* buffer size; if not available, return NULL
*/

12
net/smc/smc_core.h
View File

@ -141,6 +141,12 @@ struct smc_rtoken { /* address/key of remote RMB */
};
#define SMC_LGR_ID_SIZE 4
#define SMC_BUF_MIN_SIZE 16384 /* minimum size of an RMB */
#define SMC_RMBE_SIZES 16 /* number of distinct RMBE sizes */
/* theoretically, the RFC states that largest size would be 512K,
* i.e. compressed 5 and thus 6 sizes (0..5), despite
* struct smc_clc_msg_accept_confirm.rmbe_size being a 4 bit value (0..15)
*/
struct smc_link_group {
struct list_head list;
@ -205,12 +211,14 @@ static inline struct smc_connection *smc_lgr_find_conn(
struct smc_sock;
struct smc_clc_msg_accept_confirm;
struct smc_clc_msg_local;
void smc_lgr_free(struct smc_link_group *lgr);
void smc_lgr_forget(struct smc_link_group *lgr);
void smc_lgr_terminate(struct smc_link_group *lgr);
void smc_port_terminate(struct smc_ib_device *smcibdev, u8 ibport);
int smc_buf_create(struct smc_sock *smc);
int smc_uncompress_bufsize(u8 compressed);
int smc_rmb_rtoken_handling(struct smc_connection *conn,
struct smc_clc_msg_accept_confirm *clc);
int smc_rtoken_add(struct smc_link_group *lgr, __be64 nw_vaddr, __be32 nw_rkey);
@ -219,5 +227,9 @@ void smc_sndbuf_sync_sg_for_cpu(struct smc_connection *conn);
void smc_sndbuf_sync_sg_for_device(struct smc_connection *conn);
void smc_rmb_sync_sg_for_cpu(struct smc_connection *conn);
void smc_rmb_sync_sg_for_device(struct smc_connection *conn);
void smc_conn_free(struct smc_connection *conn);
int smc_conn_create(struct smc_sock *smc,
struct smc_ib_device *smcibdev, u8 ibport,
struct smc_clc_msg_local *lcl, int srv_first_contact);
void smc_core_exit(void);
#endif