diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-10 19:52:19 +0900 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-10 19:52:19 +0900 |
commit | a188e7e93a36627fb3f0013f41857ab54f076d04 (patch) | |
tree | 7686a0e870decdab3971db709fb0edf04241c07e /drivers/target/iscsi/iscsi_target_parameters.c | |
parent | e1b28147f684af67bfac989756c27c19859d3d4e (diff) | |
parent | cf0eb28d3ba60098865bf7dbcbfdd6b1cc483e3b (diff) |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull scsi target updates from Nicholas Bellinger:
"Things have been calm for the most part with no new fabric drivers in
flight for v3.7 (we're up to eight now !), so this update is primarily
focused on addressing a few long-standing items within target-core and
iscsi-target fabric code.
The highlights include:
- target: Simplify fabric sense data length handling (roland)
- qla2xxx: Fix endianness of task management response code (roland)
- target: fix truncation of mode data, support zero allocation length
(paolo)
- target: Properly support zero-length commands in normal processing
path (paolo)
- iscsi-target: Correctly set 0xffffffff field within ISCSI_OP_REJECT
PDU (ronnie + nab)
- iscsi-target: Add explicit set of cache_dynamic_acls=1 for TPG
demo-mode (ronnie + nab)
- target/file: Re-enable optional fd_buffered_io=1 operation (nab +
hch)
- iscsi-target: Add MaxXmitDataSegmenthLength forr target ->
initiator MDRSL declaration (nab)
- target: Add target_submit_cmd_map_sgls for SGL fabric memory
passthrough (nab + hch)
- tcm_loop: Convert I/O path to use target_submit_cmd_map_sgls (hch +
nab)
- tcm_vhost: Convert I/O path to use target_submit_cmd_map_sgls (nab
+ hch)
The last series for adding a new target_submit_cmd_map_sgls() fabric
caller (as requested by hch) that accepts pre-allocated SGL memory
(using existing logic), along with converting tcm_loop + tcm_vhost has
only been in -next for the last days, but has gotten enough review
+testing and is clear enough a mechanical change that I think it's
reasonable to merge for -rc1 code.
Thanks again to everyone who contributed this round! Extra special
thanks to Roland (PureStorage) for tracking down the qla2xxx target
TMR response code endian issue, and to Paolo (Redhat) for resolving
the long standing zero-length CDB issues within target-core between
virtual and pSCSI backends."
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (44 commits)
iscsi-target: Bump defaults for nopin_timeout + nopin_response_timeout values
iscsit: proper endianess conversions
iscsit: use the itt_t abstract type
iscsit: add missing endianess conversion in iscsit_check_inaddr_any
iscsit: remove incorrect unlock in iscsit_build_sendtargets_resp
iscsit: mark various functions static
target/iscsi: precedence bug in iscsit_set_dataout_sequence_values()
target/usb-gadget: strlen() doesn't count the terminator
target/usb-gadget: remove duplicate initialization
tcm_vhost: Convert I/O path to use target_submit_cmd_map_sgls
target: Add control CDB READ payload zero work-around
tcm_loop: Convert I/O path to use target_submit_cmd_map_sgls
target: Add target_submit_cmd_map_sgls for SGL fabric memory passthrough
iscsi-target: Add explicit set of cache_dynamic_acls=1 for TPG demo-mode
iscsi-target: Change iscsi_target_seq_pdu_list.c to honor MaxXmitDataSegmentLength
iscsi-target: Add MaxXmitDataSegmentLength connection recovery check
iscsi-target: Convert incoming PDU payload checks to MaxXmitDataSegmentLength
iscsi-target: Enable MaxXmitDataSegmentLength operation in login path
iscsi-target: Add base MaxXmitDataSegmentLength code
target/file: Re-enable optional fd_buffered_io=1 operation
...
Diffstat (limited to 'drivers/target/iscsi/iscsi_target_parameters.c')
-rw-r--r-- | drivers/target/iscsi/iscsi_target_parameters.c | 71 |
1 files changed, 62 insertions, 9 deletions
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c index 240f7aa76ed1..90b740048f26 100644 --- a/drivers/target/iscsi/iscsi_target_parameters.c +++ b/drivers/target/iscsi/iscsi_target_parameters.c @@ -334,6 +334,13 @@ int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr) if (!param) goto out; + param = iscsi_set_default_param(pl, MAXXMITDATASEGMENTLENGTH, + INITIAL_MAXXMITDATASEGMENTLENGTH, + PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, + TYPERANGE_512_TO_16777215, USE_ALL); + if (!param) + goto out; + param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH, INITIAL_MAXRECVDATASEGMENTLENGTH, PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, @@ -467,6 +474,8 @@ int iscsi_set_keys_to_negotiate( SET_PSTATE_NEGOTIATE(param); } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { SET_PSTATE_NEGOTIATE(param); + } else if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) { + continue; } else if (!strcmp(param->name, MAXBURSTLENGTH)) { SET_PSTATE_NEGOTIATE(param); } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) { @@ -1056,7 +1065,8 @@ out: return proposer_values; } -static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value) +static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value, + struct iscsi_conn *conn) { u8 acceptor_boolean_value = 0, proposer_boolean_value = 0; char *negoitated_value = NULL; @@ -1131,8 +1141,35 @@ static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value) return -1; } - if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) - SET_PSTATE_REPLY_OPTIONAL(param); + if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { + struct iscsi_param *param_mxdsl; + unsigned long long tmp; + int rc; + + rc = strict_strtoull(param->value, 0, &tmp); + if (rc < 0) + return -1; + + conn->conn_ops->MaxRecvDataSegmentLength = tmp; + pr_debug("Saving op->MaxRecvDataSegmentLength from" + " original initiator received value: %u\n", + conn->conn_ops->MaxRecvDataSegmentLength); + + param_mxdsl = iscsi_find_param_from_key( + MAXXMITDATASEGMENTLENGTH, + conn->param_list); + if (!param_mxdsl) + return -1; + + rc = iscsi_update_param_value(param, + param_mxdsl->value); + if (rc < 0) + return -1; + + pr_debug("Updated %s to target MXDSL value: %s\n", + param->name, param->value); + } + } else if (IS_TYPE_NUMBER_RANGE(param)) { negoitated_value = iscsi_get_value_from_number_range( param, value); @@ -1526,8 +1563,9 @@ int iscsi_decode_text_input( u8 sender, char *textbuf, u32 length, - struct iscsi_param_list *param_list) + struct iscsi_conn *conn) { + struct iscsi_param_list *param_list = conn->param_list; char *tmpbuf, *start = NULL, *end = NULL; tmpbuf = kzalloc(length + 1, GFP_KERNEL); @@ -1585,7 +1623,7 @@ int iscsi_decode_text_input( } SET_PSTATE_RESPONSE_GOT(param); } else { - if (iscsi_check_acceptor_state(param, value) < 0) { + if (iscsi_check_acceptor_state(param, value, conn) < 0) { kfree(tmpbuf); return -1; } @@ -1720,6 +1758,18 @@ void iscsi_set_connection_parameters( pr_debug("---------------------------------------------------" "---------------\n"); list_for_each_entry(param, ¶m_list->param_list, p_list) { + /* + * Special case to set MAXXMITDATASEGMENTLENGTH from the + * target requested MaxRecvDataSegmentLength, even though + * this key is not sent over the wire. + */ + if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) { + ops->MaxXmitDataSegmentLength = + simple_strtoul(param->value, &tmpptr, 0); + pr_debug("MaxXmitDataSegmentLength: %s\n", + param->value); + } + if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param)) continue; if (!strcmp(param->name, AUTHMETHOD)) { @@ -1734,10 +1784,13 @@ void iscsi_set_connection_parameters( pr_debug("DataDigest: %s\n", param->value); } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { - ops->MaxRecvDataSegmentLength = - simple_strtoul(param->value, &tmpptr, 0); - pr_debug("MaxRecvDataSegmentLength: %s\n", - param->value); + /* + * At this point iscsi_check_acceptor_state() will have + * set ops->MaxRecvDataSegmentLength from the original + * initiator provided value. + */ + pr_debug("MaxRecvDataSegmentLength: %u\n", + ops->MaxRecvDataSegmentLength); } else if (!strcmp(param->name, OFMARKER)) { ops->OFMarker = !strcmp(param->value, YES); pr_debug("OFMarker: %s\n", |