diff --git a/sys/cam/ctl/ctl_frontend_iscsi.c b/sys/cam/ctl/ctl_frontend_iscsi.c index a5a80848c763..b3cd8ab79d76 100644 --- a/sys/cam/ctl/ctl_frontend_iscsi.c +++ b/sys/cam/ctl/ctl_frontend_iscsi.c @@ -1568,8 +1568,10 @@ cfiscsi_ioctl_handoff(struct ctl_iscsi *ci) */ cs->cs_cmdsn = cihp->cmdsn; cs->cs_statsn = cihp->statsn; - cs->cs_max_recv_data_segment_length = cihp->max_recv_data_segment_length; - cs->cs_max_send_data_segment_length = cihp->max_send_data_segment_length; + cs->cs_conn->ic_max_recv_data_segment_length = + cihp->max_recv_data_segment_length; + cs->cs_conn->ic_max_send_data_segment_length = + cihp->max_send_data_segment_length; cs->cs_max_burst_length = cihp->max_burst_length; cs->cs_first_burst_length = cihp->first_burst_length; cs->cs_immediate_data = !!cihp->immediate_data; @@ -1734,8 +1736,8 @@ cfiscsi_ioctl_list(struct ctl_iscsi *ci) cs->cs_target->ct_tag, cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", - cs->cs_max_recv_data_segment_length, - cs->cs_max_send_data_segment_length, + cs->cs_conn->ic_max_recv_data_segment_length, + cs->cs_conn->ic_max_send_data_segment_length, cs->cs_max_burst_length, cs->cs_first_burst_length, cs->cs_immediate_data, @@ -2534,12 +2536,14 @@ cfiscsi_datamove_in(union ctl_io *io) /* * Truncate to maximum data segment length. */ - KASSERT(response->ip_data_len < cs->cs_max_send_data_segment_length, + KASSERT(response->ip_data_len < + cs->cs_conn->ic_max_send_data_segment_length, ("ip_data_len %zd >= max_send_data_segment_length %d", - response->ip_data_len, cs->cs_max_send_data_segment_length)); + response->ip_data_len, + cs->cs_conn->ic_max_send_data_segment_length)); if (response->ip_data_len + len > - cs->cs_max_send_data_segment_length) { - len = cs->cs_max_send_data_segment_length - + cs->cs_conn->ic_max_send_data_segment_length) { + len = cs->cs_conn->ic_max_send_data_segment_length - response->ip_data_len; KASSERT(len <= sg_len, ("len %zd > sg_len %zd", len, sg_len)); @@ -2599,7 +2603,8 @@ cfiscsi_datamove_in(union ctl_io *io) i++; } - if (response->ip_data_len == cs->cs_max_send_data_segment_length) { + if (response->ip_data_len == + cs->cs_conn->ic_max_send_data_segment_length) { /* * Can't stuff more data into the current PDU; * queue it. Note that's not enough to check diff --git a/sys/cam/ctl/ctl_frontend_iscsi.h b/sys/cam/ctl/ctl_frontend_iscsi.h index a1c857231428..7c7f422a8d1f 100644 --- a/sys/cam/ctl/ctl_frontend_iscsi.h +++ b/sys/cam/ctl/ctl_frontend_iscsi.h @@ -86,8 +86,6 @@ struct cfiscsi_session { bool cs_terminating; bool cs_handoff_in_progress; bool cs_tasks_aborted; - int cs_max_recv_data_segment_length; - int cs_max_send_data_segment_length; int cs_max_burst_length; int cs_first_burst_length; bool cs_immediate_data; diff --git a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c index fce593b54032..17d5685f1c1a 100644 --- a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c +++ b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c @@ -469,7 +469,7 @@ icl_cxgbei_conn_pdu_append_data(struct icl_conn *ic, struct icl_pdu *ip, } MPASS(len == 0); } - MPASS(ip->ip_data_len <= ic->ic_max_data_segment_length); + MPASS(ip->ip_data_len <= ic->ic_max_send_data_segment_length); return (0); } @@ -565,8 +565,6 @@ icl_cxgbei_new_conn(const char *name, struct mtx *lock) #ifdef DIAGNOSTIC refcount_init(&ic->ic_outstanding_pdus, 0); #endif - /* This is a stop-gap value that will be corrected during handoff. */ - ic->ic_max_data_segment_length = 16384; ic->ic_name = name; ic->ic_offload = "cxgbei"; ic->ic_unmapped = false; @@ -806,26 +804,11 @@ icl_cxgbei_conn_handoff(struct icl_conn *ic, int fd) icc->toep = toep; icc->cwt = cxgbei_select_worker_thread(icc); - /* - * We maintain the _send_ DSL in this field just to have a - * convenient way to assert that the kernel never sends - * oversized PDUs. This field is otherwise unused in the driver - * or the kernel. - */ - ic->ic_max_data_segment_length = ci->max_tx_pdu_len - - ISCSI_BHS_SIZE; - icc->ulp_submode = 0; - if (ic->ic_header_crc32c) { + if (ic->ic_header_crc32c) icc->ulp_submode |= ULP_CRC_HEADER; - ic->ic_max_data_segment_length -= - ISCSI_HEADER_DIGEST_SIZE; - } - if (ic->ic_data_crc32c) { + if (ic->ic_data_crc32c) icc->ulp_submode |= ULP_CRC_DATA; - ic->ic_max_data_segment_length -= - ISCSI_DATA_DIGEST_SIZE; - } so->so_options |= SO_NO_DDP; toep->params.ulp_mode = ULP_MODE_ISCSI; toep->ulpcb = icc; diff --git a/sys/dev/iscsi/icl.h b/sys/dev/iscsi/icl.h index 0b897a50302a..94600c0edad1 100644 --- a/sys/dev/iscsi/icl.h +++ b/sys/dev/iscsi/icl.h @@ -109,7 +109,8 @@ struct icl_conn { bool ic_data_crc32c; bool ic_send_running; bool ic_receive_running; - size_t ic_max_data_segment_length; + uint32_t ic_max_recv_data_segment_length; + uint32_t ic_max_send_data_segment_length; size_t ic_maxtags; bool ic_disconnecting; bool ic_iser; diff --git a/sys/dev/iscsi/icl_soft.c b/sys/dev/iscsi/icl_soft.c index 9cede6b44311..c15afbb59a68 100644 --- a/sys/dev/iscsi/icl_soft.c +++ b/sys/dev/iscsi/icl_soft.c @@ -573,7 +573,7 @@ icl_conn_receive_pdu(struct icl_conn *ic, struct mbuf **r, size_t *rs) */ len = icl_pdu_data_segment_length(request); - if (len > ic->ic_max_data_segment_length) { + if (len > ic->ic_max_recv_data_segment_length) { ICL_WARN("received data segment " "length %zd is larger than negotiated; " "dropping connection", len); @@ -1154,7 +1154,6 @@ icl_soft_new_conn(const char *name, struct mtx *lock) #ifdef DIAGNOSTIC refcount_init(&ic->ic_outstanding_pdus, 0); #endif - ic->ic_max_data_segment_length = max_data_segment_length; ic->ic_name = name; ic->ic_offload = "None"; ic->ic_unmapped = false; @@ -1205,13 +1204,17 @@ icl_conn_start(struct icl_conn *ic) * send a PDU in pieces; thus, the minimum buffer size is equal * to the maximum PDU size. "+4" is to account for possible padding. */ - minspace = sizeof(struct iscsi_bhs) + ic->ic_max_data_segment_length + + minspace = sizeof(struct iscsi_bhs) + + ic->ic_max_send_data_segment_length + ISCSI_HEADER_DIGEST_SIZE + ISCSI_DATA_DIGEST_SIZE + 4; if (sendspace < minspace) { ICL_WARN("kern.icl.sendspace too low; must be at least %zd", minspace); sendspace = minspace; } + minspace = sizeof(struct iscsi_bhs) + + ic->ic_max_recv_data_segment_length + + ISCSI_HEADER_DIGEST_SIZE + ISCSI_DATA_DIGEST_SIZE + 4; if (recvspace < minspace) { ICL_WARN("kern.icl.recvspace too low; must be at least %zd", minspace); diff --git a/sys/dev/iscsi/iscsi.c b/sys/dev/iscsi/iscsi.c index 13a35c371c40..7ddb5a9ce1ec 100644 --- a/sys/dev/iscsi/iscsi.c +++ b/sys/dev/iscsi/iscsi.c @@ -1206,8 +1206,8 @@ iscsi_pdu_handle_r2t(struct icl_pdu *response) for (;;) { len = total_len; - if (len > is->is_max_send_data_segment_length) - len = is->is_max_send_data_segment_length; + if (len > is->is_conn->ic_max_send_data_segment_length) + len = is->is_conn->ic_max_send_data_segment_length; if (off + len > csio->dxfer_len) { ISCSI_SESSION_WARN(is, "target requested invalid " @@ -1433,9 +1433,9 @@ iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, is->is_initial_r2t = handoff->idh_initial_r2t; is->is_immediate_data = handoff->idh_immediate_data; - is->is_max_recv_data_segment_length = + ic->ic_max_recv_data_segment_length = handoff->idh_max_recv_data_segment_length; - is->is_max_send_data_segment_length = + ic->ic_max_send_data_segment_length = handoff->idh_max_send_data_segment_length; is->is_max_burst_length = handoff->idh_max_burst_length; is->is_first_burst_length = handoff->idh_first_burst_length; @@ -1648,7 +1648,7 @@ iscsi_ioctl_daemon_send(struct iscsi_softc *sc, return (EIO); datalen = ids->ids_data_segment_len; - if (datalen > is->is_max_send_data_segment_length) + if (datalen > is->is_conn->ic_max_send_data_segment_length) return (EINVAL); if (datalen > 0) { data = malloc(datalen, M_ISCSI, M_WAITOK); @@ -1793,18 +1793,6 @@ iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); - /* - * Set some default values, from RFC 3720, section 12. - * - * These values are updated by the handoff IOCTL, but are - * needed prior to the handoff to support sending the ISER - * login PDU. - */ - is->is_max_recv_data_segment_length = 8192; - is->is_max_send_data_segment_length = 8192; - is->is_max_burst_length = 262144; - is->is_first_burst_length = 65536; - sx_xlock(&sc->sc_lock); /* @@ -1847,6 +1835,18 @@ iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) cv_init(&is->is_login_cv, "iscsi_login"); #endif + /* + * Set some default values, from RFC 3720, section 12. + * + * These values are updated by the handoff IOCTL, but are + * needed prior to the handoff to support sending the ISER + * login PDU. + */ + is->is_conn->ic_max_recv_data_segment_length = 8192; + is->is_conn->ic_max_send_data_segment_length = 8192; + is->is_max_burst_length = 262144; + is->is_first_burst_length = 65536; + is->is_softc = sc; sc->sc_last_session_id++; is->is_id = sc->sc_last_session_id; @@ -1960,9 +1960,9 @@ iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) iss.iss_data_digest = ISCSI_DIGEST_NONE; iss.iss_max_send_data_segment_length = - is->is_max_send_data_segment_length; + is->is_conn->ic_max_send_data_segment_length; iss.iss_max_recv_data_segment_length = - is->is_max_recv_data_segment_length; + is->is_conn->ic_max_recv_data_segment_length; iss.iss_max_burst_length = is->is_max_burst_length; iss.iss_first_burst_length = is->is_first_burst_length; iss.iss_immediate_data = is->is_immediate_data; @@ -2330,10 +2330,10 @@ iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); len = is->is_first_burst_length; } - if (len > is->is_max_send_data_segment_length) { + if (len > is->is_conn->ic_max_send_data_segment_length) { ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, - is->is_max_send_data_segment_length); - len = is->is_max_send_data_segment_length; + is->is_conn->ic_max_send_data_segment_length); + len = is->is_conn->ic_max_send_data_segment_length; } error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); diff --git a/sys/dev/iscsi/iscsi.h b/sys/dev/iscsi/iscsi.h index 793b7529c7c0..fe1cc64f88db 100644 --- a/sys/dev/iscsi/iscsi.h +++ b/sys/dev/iscsi/iscsi.h @@ -67,8 +67,6 @@ struct iscsi_session { uint8_t is_isid[6]; uint16_t is_tsih; bool is_immediate_data; - int is_max_recv_data_segment_length; - int is_max_send_data_segment_length; char is_target_alias[ISCSI_ALIAS_LEN]; TAILQ_HEAD(, iscsi_outstanding) is_outstanding;