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| author | Mike Christie <michaelc@cs.wisc.edu> | 2007-12-13 12:43:39 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-11 18:28:48 -0600 |
| commit | 66bbe0ce11c7ebe20cd1d4b5d271b2e124e223c5 (patch) | |
| tree | db86d9d61e12ba37298ebaa092a81076aff643b0 /drivers | |
| parent | 4cd49ea1330c946db00a28819b766062716aa857 (diff) | |
| download | lwn-66bbe0ce11c7ebe20cd1d4b5d271b2e124e223c5.tar.gz lwn-66bbe0ce11c7ebe20cd1d4b5d271b2e124e223c5.zip | |
[SCSI] iscsi_tcp: enable sg chaining
The previous patches converted iscsi_tcp to support sg chaining.
This patch sets the proper flags and sets sg_table size to
4096. This allows fs io to be capped at max_sectors, but passthrough
IO to be limited by some other part of the kernel.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 5 | ||||
| -rw-r--r-- | drivers/scsi/iscsi_tcp.h | 3 |
2 files changed, 3 insertions, 5 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 65df908019fd..84c4a5026bcb 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -1928,13 +1928,14 @@ static struct scsi_host_template iscsi_sht = { .queuecommand = iscsi_queuecommand, .change_queue_depth = iscsi_change_queue_depth, .can_queue = ISCSI_DEF_XMIT_CMDS_MAX - 1, - .sg_tablesize = ISCSI_SG_TABLESIZE, + .sg_tablesize = 4096, .max_sectors = 0xFFFF, .cmd_per_lun = ISCSI_DEF_CMD_PER_LUN, .eh_abort_handler = iscsi_eh_abort, .eh_device_reset_handler= iscsi_eh_device_reset, .eh_host_reset_handler = iscsi_eh_host_reset, .use_clustering = DISABLE_CLUSTERING, + .use_sg_chaining = ENABLE_SG_CHAINING, .slave_configure = iscsi_tcp_slave_configure, .proc_name = "iscsi_tcp", .this_id = -1, @@ -1974,7 +1975,7 @@ static struct iscsi_transport iscsi_tcp_transport = { .host_template = &iscsi_sht, .conndata_size = sizeof(struct iscsi_conn), .max_conn = 1, - .max_cmd_len = ISCSI_TCP_MAX_CMD_LEN, + .max_cmd_len = 16, /* session management */ .create_session = iscsi_tcp_session_create, .destroy_session = iscsi_tcp_session_destroy, diff --git a/drivers/scsi/iscsi_tcp.h b/drivers/scsi/iscsi_tcp.h index 893cd2e1701e..ed0b991d1e72 100644 --- a/drivers/scsi/iscsi_tcp.h +++ b/drivers/scsi/iscsi_tcp.h @@ -24,9 +24,6 @@ #include <scsi/libiscsi.h> -#define ISCSI_SG_TABLESIZE SG_ALL -#define ISCSI_TCP_MAX_CMD_LEN 16 - struct crypto_hash; struct socket; struct iscsi_tcp_conn; |