diff options
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 102 | ||||
| -rw-r--r-- | drivers/scsi/iscsi_tcp.h | 8 |
2 files changed, 38 insertions, 72 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 290c1d76cd4..82399f71028 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -693,7 +693,7 @@ iscsi_recv_digest_update(struct iscsi_tcp_conn *tcp_conn, char* buf, int len) struct scatterlist tmp; sg_init_one(&tmp, buf, len); - crypto_digest_update(tcp_conn->data_rx_tfm, &tmp, 1); + crypto_digest_update(tcp_conn->rx_tfm, &tmp, 1); } static int iscsi_scsi_data_in(struct iscsi_conn *conn) @@ -748,11 +748,11 @@ static int iscsi_scsi_data_in(struct iscsi_conn *conn) if (conn->datadgst_en) { if (!offset) crypto_digest_update( - tcp_conn->data_rx_tfm, + tcp_conn->rx_tfm, &sg[i], 1); else partial_sg_digest_update( - tcp_conn->data_rx_tfm, + tcp_conn->rx_tfm, &sg[i], sg[i].offset + offset, sg[i].length - offset); @@ -766,7 +766,7 @@ static int iscsi_scsi_data_in(struct iscsi_conn *conn) /* * data-in is complete, but buffer not... */ - partial_sg_digest_update(tcp_conn->data_rx_tfm, + partial_sg_digest_update(tcp_conn->rx_tfm, &sg[i], sg[i].offset, sg[i].length-rc); rc = 0; @@ -885,10 +885,8 @@ more: */ rc = iscsi_tcp_hdr_recv(conn); if (!rc && tcp_conn->in.datalen) { - if (conn->datadgst_en) { - BUG_ON(!tcp_conn->data_rx_tfm); - crypto_digest_init(tcp_conn->data_rx_tfm); - } + if (conn->datadgst_en) + crypto_digest_init(tcp_conn->rx_tfm); tcp_conn->in_progress = IN_PROGRESS_DATA_RECV; } else if (rc) { iscsi_conn_failure(conn, rc); @@ -940,10 +938,10 @@ more: tcp_conn->in.padding); memset(pad, 0, tcp_conn->in.padding); sg_init_one(&sg, pad, tcp_conn->in.padding); - crypto_digest_update(tcp_conn->data_rx_tfm, + crypto_digest_update(tcp_conn->rx_tfm, &sg, 1); } - crypto_digest_final(tcp_conn->data_rx_tfm, + crypto_digest_final(tcp_conn->rx_tfm, (u8 *) & tcp_conn->in.datadgst); debug_tcp("rx digest 0x%x\n", tcp_conn->in.datadgst); tcp_conn->in_progress = IN_PROGRESS_DDIGEST_RECV; @@ -1188,7 +1186,7 @@ static inline void iscsi_data_digest_init(struct iscsi_tcp_conn *tcp_conn, struct iscsi_tcp_cmd_task *tcp_ctask) { - crypto_digest_init(tcp_conn->data_tx_tfm); + crypto_digest_init(tcp_conn->tx_tfm); tcp_ctask->digest_count = 4; } @@ -1444,7 +1442,7 @@ iscsi_send_padding(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask) iscsi_buf_init_iov(&tcp_ctask->sendbuf, (char*)&tcp_ctask->pad, tcp_ctask->pad_count); if (conn->datadgst_en) - crypto_digest_update(tcp_conn->data_tx_tfm, + crypto_digest_update(tcp_conn->tx_tfm, &tcp_ctask->sendbuf.sg, 1); } else if (!(tcp_ctask->xmstate & XMSTATE_W_RESEND_PAD)) return 0; @@ -1477,7 +1475,7 @@ iscsi_send_digest(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask, tcp_conn = conn->dd_data; if (!(tcp_ctask->xmstate & XMSTATE_W_RESEND_DATA_DIGEST)) { - crypto_digest_final(tcp_conn->data_tx_tfm, (u8*)digest); + crypto_digest_final(tcp_conn->tx_tfm, (u8*)digest); iscsi_buf_init_iov(buf, (char*)digest, 4); } tcp_ctask->xmstate &= ~XMSTATE_W_RESEND_DATA_DIGEST; @@ -1511,7 +1509,7 @@ iscsi_send_data(struct iscsi_cmd_task *ctask, struct iscsi_buf *sendbuf, rc = iscsi_sendpage(conn, sendbuf, count, &buf_sent); *sent = *sent + buf_sent; if (buf_sent && conn->datadgst_en) - partial_sg_digest_update(tcp_conn->data_tx_tfm, + partial_sg_digest_update(tcp_conn->tx_tfm, &sendbuf->sg, sendbuf->sg.offset + offset, buf_sent); if (!iscsi_buf_left(sendbuf) && *sg != tcp_ctask->bad_sg) { @@ -1547,10 +1545,6 @@ iscsi_send_unsol_hdr(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask) if (conn->hdrdgst_en) iscsi_hdr_digest(conn, &tcp_ctask->headbuf, (u8*)dtask->hdrext); - if (conn->datadgst_en) { - iscsi_data_digest_init(ctask->conn->dd_data, tcp_ctask); - dtask->digest = 0; - } tcp_ctask->xmstate &= ~XMSTATE_UNS_INIT; iscsi_set_padding(tcp_ctask, ctask->data_count); @@ -1563,6 +1557,12 @@ iscsi_send_unsol_hdr(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask) return rc; } + if (conn->datadgst_en) { + dtask = &tcp_ctask->unsol_dtask; + iscsi_data_digest_init(ctask->conn->dd_data, tcp_ctask); + dtask->digest = 0; + } + debug_scsi("uns dout [itt 0x%x dlen %d sent %d]\n", ctask->itt, ctask->unsol_count, tcp_ctask->sent); return 0; @@ -1629,12 +1629,6 @@ send_hdr: if (conn->hdrdgst_en) iscsi_hdr_digest(conn, &r2t->headbuf, (u8*)dtask->hdrext); - - if (conn->datadgst_en) { - iscsi_data_digest_init(conn->dd_data, tcp_ctask); - dtask->digest = 0; - } - rc = iscsi_sendhdr(conn, &r2t->headbuf, r2t->data_count); if (rc) { tcp_ctask->xmstate &= ~XMSTATE_SOL_DATA; @@ -1642,6 +1636,11 @@ send_hdr: return rc; } + if (conn->datadgst_en) { + iscsi_data_digest_init(conn->dd_data, tcp_ctask); + dtask->digest = 0; + } + iscsi_set_padding(tcp_ctask, r2t->data_count); debug_scsi("sol dout [dsn %d itt 0x%x dlen %d sent %d]\n", r2t->solicit_datasn - 1, ctask->itt, r2t->data_count, @@ -1764,8 +1763,20 @@ iscsi_tcp_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx) /* initial operational parameters */ tcp_conn->hdr_size = sizeof(struct iscsi_hdr); + tcp_conn->tx_tfm = crypto_alloc_tfm("crc32c", 0); + if (!tcp_conn->tx_tfm) + goto free_tcp_conn; + + tcp_conn->rx_tfm = crypto_alloc_tfm("crc32c", 0); + if (!tcp_conn->rx_tfm) + goto free_tx_tfm; + return cls_conn; +free_tx_tfm: + crypto_free_tfm(tcp_conn->tx_tfm); +free_tcp_conn: + kfree(tcp_conn); tcp_conn_alloc_fail: iscsi_conn_teardown(cls_conn); return NULL; @@ -1807,10 +1818,6 @@ iscsi_tcp_conn_destroy(struct iscsi_cls_conn *cls_conn) crypto_free_tfm(tcp_conn->tx_tfm); if (tcp_conn->rx_tfm) crypto_free_tfm(tcp_conn->rx_tfm); - if (tcp_conn->data_tx_tfm) - crypto_free_tfm(tcp_conn->data_tx_tfm); - if (tcp_conn->data_rx_tfm) - crypto_free_tfm(tcp_conn->data_rx_tfm); } kfree(tcp_conn); @@ -1968,48 +1975,11 @@ iscsi_conn_set_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param, case ISCSI_PARAM_HDRDGST_EN: iscsi_set_param(cls_conn, param, buf, buflen); tcp_conn->hdr_size = sizeof(struct iscsi_hdr); - if (conn->hdrdgst_en) { + if (conn->hdrdgst_en) tcp_conn->hdr_size += sizeof(__u32); - if (!tcp_conn->tx_tfm) - tcp_conn->tx_tfm = crypto_alloc_tfm("crc32c", - 0); - if (!tcp_conn->tx_tfm) - return -ENOMEM; - if (!tcp_conn->rx_tfm) - tcp_conn->rx_tfm = crypto_alloc_tfm("crc32c", - 0); - if (!tcp_conn->rx_tfm) { - crypto_free_tfm(tcp_conn->tx_tfm); - return -ENOMEM; - } - } else { - if (tcp_conn->tx_tfm) - crypto_free_tfm(tcp_conn->tx_tfm); - if (tcp_conn->rx_tfm) - crypto_free_tfm(tcp_conn->rx_tfm); - } break; case ISCSI_PARAM_DATADGST_EN: iscsi_set_param(cls_conn, param, buf, buflen); - if (conn->datadgst_en) { - if (!tcp_conn->data_tx_tfm) - tcp_conn->data_tx_tfm = - crypto_alloc_tfm("crc32c", 0); - if (!tcp_conn->data_tx_tfm) - return -ENOMEM; - if (!tcp_conn->data_rx_tfm) - tcp_conn->data_rx_tfm = - crypto_alloc_tfm("crc32c", 0); - if (!tcp_conn->data_rx_tfm) { - crypto_free_tfm(tcp_conn->data_tx_tfm); - return -ENOMEM; - } - } else { - if (tcp_conn->data_tx_tfm) - crypto_free_tfm(tcp_conn->data_tx_tfm); - if (tcp_conn->data_rx_tfm) - crypto_free_tfm(tcp_conn->data_rx_tfm); - } tcp_conn->sendpage = conn->datadgst_en ? sock_no_sendpage : tcp_conn->sock->ops->sendpage; break; diff --git a/drivers/scsi/iscsi_tcp.h b/drivers/scsi/iscsi_tcp.h index 7e40e94d9fd..609f4778d12 100644 --- a/drivers/scsi/iscsi_tcp.h +++ b/drivers/scsi/iscsi_tcp.h @@ -81,10 +81,6 @@ struct iscsi_tcp_conn { * stop to terminate */ /* iSCSI connection-wide sequencing */ int hdr_size; /* PDU header size */ - - struct crypto_tfm *rx_tfm; /* CRC32C (Rx) */ - struct crypto_tfm *data_rx_tfm; /* CRC32C (Rx) for data */ - /* control data */ struct iscsi_tcp_recv in; /* TCP receive context */ int in_progress; /* connection state machine */ @@ -94,9 +90,9 @@ struct iscsi_tcp_conn { void (*old_state_change)(struct sock *); void (*old_write_space)(struct sock *); - /* xmit */ + /* data and header digests */ struct crypto_tfm *tx_tfm; /* CRC32C (Tx) */ - struct crypto_tfm *data_tx_tfm; /* CRC32C (Tx) for data */ + struct crypto_tfm *rx_tfm; /* CRC32C (Rx) */ /* MIB custom statistics */ uint32_t sendpage_failures_cnt; |