Date: Thu, 26 May 2016 10:30:03 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r300727 - head/sys/dev/iser Message-ID: <201605261030.u4QAU3KH084799@repo.freebsd.org>
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Author: trasz Date: Thu May 26 10:30:03 2016 New Revision: 300727 URL: https://svnweb.freebsd.org/changeset/base/300727 Log: Make iser(4) buildable again by adjusting it for the recent changes in ICL interface. - the ordering of parameters to icl_conn_task_setup is different, so that the "cookie" is last. - the icl_conn_connected() method is gone, replaced by much simpler mechanism. I'd rather keep the ICL interface as small as possible. - I don't really like the s/offload/driver/g. The "tcp" is not a driver; "iser" is not really a driver either. I'd prefer to leave it as it is. - the check for ic_session_type_discovery() in iser_conn_handoff() is gone, as handoff cannot happen for discovery sessions. - ic_session_login_phase() and ic_session_type_discovery() are gone. If you had your handoff method called - you're no longer in either of those. - the way maxtags is passed is different; now it's simply ic->ic_maxtags. It's cleaner, and the old way would cause weird things to happen if fail_on_disconnection=1 and the user changed the maxtags sysctl before reconnecting (basically the CAM idea of maxtags would be different from iSER one). - icl_hba_misc() is gone; declare support for PIM_UNMAPPED by setting ic->ic_unmapped flag. - the way we find the "iser" ICL module is rewritten - we have a flag for icl_register() that says if the module is iSER-capable or not. - icl_conn_release() is gone; iser_conn_release() is called from iser_conn_free() (no functional change in this case) and at the beginning of icl_conn_connect(), to handle reconnection. MFC after: 1 month Sponsored by: The FreeBSD Foundation Modified: head/sys/dev/iser/icl_iser.c head/sys/dev/iser/icl_iser.h head/sys/dev/iser/iser_initiator.c Modified: head/sys/dev/iser/icl_iser.c ============================================================================== --- head/sys/dev/iser/icl_iser.c Thu May 26 10:03:30 2016 (r300726) +++ head/sys/dev/iser/icl_iser.c Thu May 26 10:30:03 2016 (r300727) @@ -37,6 +37,8 @@ static uma_zone_t icl_pdu_zone; static volatile u_int icl_iser_ncons; struct iser_global ig; +static void iser_conn_release(struct icl_conn *ic); + static icl_conn_new_pdu_t iser_conn_new_pdu; static icl_conn_pdu_free_t iser_conn_pdu_free; static icl_conn_pdu_data_segment_length_t iser_conn_pdu_data_segment_length; @@ -45,9 +47,7 @@ static icl_conn_pdu_queue_t iser_conn_pd static icl_conn_handoff_t iser_conn_handoff; static icl_conn_free_t iser_conn_free; static icl_conn_close_t iser_conn_close; -static icl_conn_release_t iser_conn_release; static icl_conn_connect_t iser_conn_connect; -static icl_conn_connected_t iser_conn_connected; static icl_conn_task_setup_t iser_conn_task_setup; static icl_conn_task_done_t iser_conn_task_done; static icl_conn_pdu_get_data_t iser_conn_pdu_get_data; @@ -61,9 +61,7 @@ static kobj_method_t icl_iser_methods[] KOBJMETHOD(icl_conn_handoff, iser_conn_handoff), KOBJMETHOD(icl_conn_free, iser_conn_free), KOBJMETHOD(icl_conn_close, iser_conn_close), - KOBJMETHOD(icl_conn_release, iser_conn_release), KOBJMETHOD(icl_conn_connect, iser_conn_connect), - KOBJMETHOD(icl_conn_connected, iser_conn_connected), KOBJMETHOD(icl_conn_task_setup, iser_conn_task_setup), KOBJMETHOD(icl_conn_task_done, iser_conn_task_done), KOBJMETHOD(icl_conn_pdu_get_data, iser_conn_pdu_get_data), @@ -263,8 +261,9 @@ iser_new_conn(const char *name, struct m ic = &iser_conn->icl_conn; ic->ic_lock = lock; ic->ic_name = name; - ic->ic_driver = strdup("iser", M_TEMP); + ic->ic_offload = strdup("iser", M_TEMP); ic->ic_iser = true; + ic->ic_unmapped = true; return (ic); } @@ -274,6 +273,7 @@ iser_conn_free(struct icl_conn *ic) { struct iser_conn *iser_conn = icl_to_iser_conn(ic); + iser_conn_release(ic); cv_destroy(&iser_conn->ib_conn.beacon.flush_cv); mtx_destroy(&iser_conn->ib_conn.beacon.flush_lock); sx_destroy(&iser_conn->state_mutex); @@ -283,7 +283,7 @@ iser_conn_free(struct icl_conn *ic) } int -iser_conn_handoff(struct icl_conn *ic, int cmds_max) +iser_conn_handoff(struct icl_conn *ic, int fd) { struct iser_conn *iser_conn = icl_to_iser_conn(ic); int error = 0; @@ -296,14 +296,7 @@ iser_conn_handoff(struct icl_conn *ic, i goto out; } - /* - * In discovery session no need to allocate rx desc and posting recv - * work request - */ - if (ic->ic_session_type_discovery(ic)) - goto out; - - error = iser_alloc_rx_descriptors(iser_conn, cmds_max); + error = iser_alloc_rx_descriptors(iser_conn, ic->ic_maxtags); if (error) goto out; @@ -311,6 +304,8 @@ iser_conn_handoff(struct icl_conn *ic, i if (error) goto post_error; + iser_conn->handoff_done = true; + sx_xunlock(&iser_conn->state_mutex); return (error); @@ -325,7 +320,7 @@ out: /** * Frees all conn objects */ -void +static void iser_conn_release(struct icl_conn *ic) { struct iser_conn *iser_conn = icl_to_iser_conn(ic); @@ -388,9 +383,12 @@ iser_conn_connect(struct icl_conn *ic, i struct ib_conn *ib_conn = &iser_conn->ib_conn; int err = 0; + iser_conn_release(ic); + sx_xlock(&iser_conn->state_mutex); /* the device is known only --after-- address resolution */ ib_conn->device = NULL; + iser_conn->handoff_done = false; iser_conn->state = ISER_CONN_PENDING; @@ -437,21 +435,10 @@ addr_failure: return (err); } -/** - * Called with session spinlock held. - * No need to lock state mutex on an advisory check. - **/ -bool -iser_conn_connected(struct icl_conn *ic) -{ - struct iser_conn *iser_conn = icl_to_iser_conn(ic); - - return (iser_conn->state == ISER_CONN_UP); -} - int -iser_conn_task_setup(struct icl_conn *ic, struct ccb_scsiio *csio, - uint32_t *task_tagp, void **prvp, struct icl_pdu *ip) +iser_conn_task_setup(struct icl_conn *ic, struct icl_pdu *ip, + struct ccb_scsiio *csio, + uint32_t *task_tagp, void **prvp) { struct icl_iser_pdu *iser_pdu = icl_to_iser_pdu(ip); @@ -492,12 +479,6 @@ iser_conn_task_done(struct icl_conn *ic, iser_pdu_free(ic, ip); } -static u_int32_t -iser_hba_misc() -{ - return (PIM_UNMAPPED); -} - static int iser_limits(size_t *limitp) { @@ -520,7 +501,7 @@ icl_iser_load(void) refcount_init(&icl_iser_ncons, 0); - error = icl_register("iser", 0, iser_limits, iser_new_conn, iser_hba_misc); + error = icl_register("iser", true, 0, iser_limits, iser_new_conn); KASSERT(error == 0, ("failed to register iser")); memset(&ig, 0, sizeof(struct iser_global)); @@ -547,7 +528,7 @@ icl_iser_unload(void) mtx_destroy(&ig.connlist_mutex); sx_destroy(&ig.device_list_mutex); - icl_unregister("iser"); + icl_unregister("iser", true); uma_zdestroy(icl_pdu_zone); @@ -575,8 +556,6 @@ moduledata_t icl_iser_data = { DECLARE_MODULE(icl_iser, icl_iser_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); MODULE_DEPEND(icl_iser, icl, 1, 1, 1); -MODULE_DEPEND(icl_iser, iscsi, 1, 1, 1); MODULE_DEPEND(icl_iser, ibcore, 1, 1, 1); MODULE_DEPEND(icl_iser, linuxkpi, 1, 1, 1); MODULE_VERSION(icl_iser, 1); - Modified: head/sys/dev/iser/icl_iser.h ============================================================================== --- head/sys/dev/iser/icl_iser.h Thu May 26 10:03:30 2016 (r300726) +++ head/sys/dev/iser/icl_iser.h Thu May 26 10:30:03 2016 (r300727) @@ -148,6 +148,9 @@ #define ISER_ZBVA_NOT_SUPPORTED 0x80 #define ISER_SEND_W_INV_NOT_SUPPORTED 0x40 +#define ISCSI_DEF_MAX_RECV_SEG_LEN 8192 +#define ISCSI_OPCODE_MASK 0x3f + #define icl_to_iser_conn(ic) \ container_of(ic, struct iser_conn, icl_conn) #define icl_to_iser_pdu(ip) \ @@ -445,6 +448,7 @@ struct iser_conn { unsigned int rx_desc_head; struct iser_rx_desc *rx_descs; u32 num_rx_descs; + bool handoff_done; }; /** Modified: head/sys/dev/iser/iser_initiator.c ============================================================================== --- head/sys/dev/iser/iser_initiator.c Thu May 26 10:03:30 2016 (r300726) +++ head/sys/dev/iser/iser_initiator.c Thu May 26 10:30:03 2016 (r300727) @@ -415,7 +415,6 @@ iser_send_control(struct iser_conn *iser struct iser_tx_desc *mdesc; struct iser_device *device; size_t datalen = iser_pdu->icl_pdu.ip_data_len; - struct icl_conn *ic = &iser_conn->icl_conn; int err; mdesc = &iser_pdu->desc; @@ -442,8 +441,8 @@ iser_send_control(struct iser_conn *iser mdesc->num_sge = 2; } - /* For discovery session we re-use the login buffer */ - if (ic->ic_session_login_phase(ic) || ic->ic_session_type_discovery(ic)) { + /* For login phase and discovery session we re-use the login buffer */ + if (!iser_conn->handoff_done) { err = iser_post_recvl(iser_conn); if (err) goto send_control_error;
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