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path: root/drivers/infiniband/ulp/isert/ib_isert.c
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Diffstat (limited to 'drivers/infiniband/ulp/isert/ib_isert.c')
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c95
1 files changed, 49 insertions, 46 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index de6fc8887..d7b7b77e4 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -190,15 +190,15 @@ isert_alloc_rx_descriptors(struct isert_conn *isert_conn)
rx_desc = isert_conn->rx_descs;
for (i = 0; i < ISERT_QP_MAX_RECV_DTOS; i++, rx_desc++) {
- dma_addr = ib_dma_map_single(ib_dev, (void *)rx_desc,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ dma_addr = ib_dma_map_single(ib_dev, rx_desc->buf,
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
if (ib_dma_mapping_error(ib_dev, dma_addr))
goto dma_map_fail;
rx_desc->dma_addr = dma_addr;
rx_sg = &rx_desc->rx_sg;
- rx_sg->addr = rx_desc->dma_addr;
+ rx_sg->addr = rx_desc->dma_addr + isert_get_hdr_offset(rx_desc);
rx_sg->length = ISER_RX_PAYLOAD_SIZE;
rx_sg->lkey = device->pd->local_dma_lkey;
rx_desc->rx_cqe.done = isert_recv_done;
@@ -210,7 +210,7 @@ dma_map_fail:
rx_desc = isert_conn->rx_descs;
for (j = 0; j < i; j++, rx_desc++) {
ib_dma_unmap_single(ib_dev, rx_desc->dma_addr,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
}
kfree(isert_conn->rx_descs);
isert_conn->rx_descs = NULL;
@@ -231,7 +231,7 @@ isert_free_rx_descriptors(struct isert_conn *isert_conn)
rx_desc = isert_conn->rx_descs;
for (i = 0; i < ISERT_QP_MAX_RECV_DTOS; i++, rx_desc++) {
ib_dma_unmap_single(ib_dev, rx_desc->dma_addr,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
}
kfree(isert_conn->rx_descs);
@@ -416,10 +416,9 @@ isert_free_login_buf(struct isert_conn *isert_conn)
ISER_RX_PAYLOAD_SIZE, DMA_TO_DEVICE);
kfree(isert_conn->login_rsp_buf);
- ib_dma_unmap_single(ib_dev, isert_conn->login_req_dma,
- ISER_RX_PAYLOAD_SIZE,
- DMA_FROM_DEVICE);
- kfree(isert_conn->login_req_buf);
+ ib_dma_unmap_single(ib_dev, isert_conn->login_desc->dma_addr,
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
+ kfree(isert_conn->login_desc);
}
static int
@@ -428,25 +427,25 @@ isert_alloc_login_buf(struct isert_conn *isert_conn,
{
int ret;
- isert_conn->login_req_buf = kzalloc(sizeof(*isert_conn->login_req_buf),
+ isert_conn->login_desc = kzalloc(sizeof(*isert_conn->login_desc),
GFP_KERNEL);
- if (!isert_conn->login_req_buf)
+ if (!isert_conn->login_desc)
return -ENOMEM;
- isert_conn->login_req_dma = ib_dma_map_single(ib_dev,
- isert_conn->login_req_buf,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
- ret = ib_dma_mapping_error(ib_dev, isert_conn->login_req_dma);
+ isert_conn->login_desc->dma_addr = ib_dma_map_single(ib_dev,
+ isert_conn->login_desc->buf,
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
+ ret = ib_dma_mapping_error(ib_dev, isert_conn->login_desc->dma_addr);
if (ret) {
- isert_err("login_req_dma mapping error: %d\n", ret);
- isert_conn->login_req_dma = 0;
- goto out_free_login_req_buf;
+ isert_err("login_desc dma mapping error: %d\n", ret);
+ isert_conn->login_desc->dma_addr = 0;
+ goto out_free_login_desc;
}
isert_conn->login_rsp_buf = kzalloc(ISER_RX_PAYLOAD_SIZE, GFP_KERNEL);
if (!isert_conn->login_rsp_buf) {
ret = -ENOMEM;
- goto out_unmap_login_req_buf;
+ goto out_unmap_login_desc;
}
isert_conn->login_rsp_dma = ib_dma_map_single(ib_dev,
@@ -463,11 +462,11 @@ isert_alloc_login_buf(struct isert_conn *isert_conn,
out_free_login_rsp_buf:
kfree(isert_conn->login_rsp_buf);
-out_unmap_login_req_buf:
- ib_dma_unmap_single(ib_dev, isert_conn->login_req_dma,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
-out_free_login_req_buf:
- kfree(isert_conn->login_req_buf);
+out_unmap_login_desc:
+ ib_dma_unmap_single(ib_dev, isert_conn->login_desc->dma_addr,
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
+out_free_login_desc:
+ kfree(isert_conn->login_desc);
return ret;
}
@@ -586,7 +585,7 @@ isert_connect_release(struct isert_conn *isert_conn)
ib_destroy_qp(isert_conn->qp);
}
- if (isert_conn->login_req_buf)
+ if (isert_conn->login_desc)
isert_free_login_buf(isert_conn);
isert_device_put(device);
@@ -976,17 +975,18 @@ isert_login_post_recv(struct isert_conn *isert_conn)
int ret;
memset(&sge, 0, sizeof(struct ib_sge));
- sge.addr = isert_conn->login_req_dma;
+ sge.addr = isert_conn->login_desc->dma_addr +
+ isert_get_hdr_offset(isert_conn->login_desc);
sge.length = ISER_RX_PAYLOAD_SIZE;
sge.lkey = isert_conn->device->pd->local_dma_lkey;
isert_dbg("Setup sge: addr: %llx length: %d 0x%08x\n",
sge.addr, sge.length, sge.lkey);
- isert_conn->login_req_buf->rx_cqe.done = isert_login_recv_done;
+ isert_conn->login_desc->rx_cqe.done = isert_login_recv_done;
memset(&rx_wr, 0, sizeof(struct ib_recv_wr));
- rx_wr.wr_cqe = &isert_conn->login_req_buf->rx_cqe;
+ rx_wr.wr_cqe = &isert_conn->login_desc->rx_cqe;
rx_wr.sg_list = &sge;
rx_wr.num_sge = 1;
@@ -1063,7 +1063,7 @@ post_send:
static void
isert_rx_login_req(struct isert_conn *isert_conn)
{
- struct iser_rx_desc *rx_desc = isert_conn->login_req_buf;
+ struct iser_rx_desc *rx_desc = isert_conn->login_desc;
int rx_buflen = isert_conn->login_req_len;
struct iscsi_conn *conn = isert_conn->conn;
struct iscsi_login *login = conn->conn_login;
@@ -1075,7 +1075,7 @@ isert_rx_login_req(struct isert_conn *isert_conn)
if (login->first_request) {
struct iscsi_login_req *login_req =
- (struct iscsi_login_req *)&rx_desc->iscsi_header;
+ (struct iscsi_login_req *)isert_get_iscsi_hdr(rx_desc);
/*
* Setup the initial iscsi_login values from the leading
* login request PDU.
@@ -1094,13 +1094,13 @@ isert_rx_login_req(struct isert_conn *isert_conn)
login->tsih = be16_to_cpu(login_req->tsih);
}
- memcpy(&login->req[0], (void *)&rx_desc->iscsi_header, ISCSI_HDR_LEN);
+ memcpy(&login->req[0], isert_get_iscsi_hdr(rx_desc), ISCSI_HDR_LEN);
size = min(rx_buflen, MAX_KEY_VALUE_PAIRS);
isert_dbg("Using login payload size: %d, rx_buflen: %d "
"MAX_KEY_VALUE_PAIRS: %d\n", size, rx_buflen,
MAX_KEY_VALUE_PAIRS);
- memcpy(login->req_buf, &rx_desc->data[0], size);
+ memcpy(login->req_buf, isert_get_data(rx_desc), size);
if (login->first_request) {
complete(&isert_conn->login_comp);
@@ -1165,14 +1165,15 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
if (imm_data_len != data_len) {
sg_nents = max(1UL, DIV_ROUND_UP(imm_data_len, PAGE_SIZE));
sg_copy_from_buffer(cmd->se_cmd.t_data_sg, sg_nents,
- &rx_desc->data[0], imm_data_len);
+ isert_get_data(rx_desc), imm_data_len);
isert_dbg("Copy Immediate sg_nents: %u imm_data_len: %d\n",
sg_nents, imm_data_len);
} else {
sg_init_table(&isert_cmd->sg, 1);
cmd->se_cmd.t_data_sg = &isert_cmd->sg;
cmd->se_cmd.t_data_nents = 1;
- sg_set_buf(&isert_cmd->sg, &rx_desc->data[0], imm_data_len);
+ sg_set_buf(&isert_cmd->sg, isert_get_data(rx_desc),
+ imm_data_len);
isert_dbg("Transfer Immediate imm_data_len: %d\n",
imm_data_len);
}
@@ -1241,9 +1242,9 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn,
}
isert_dbg("Copying DataOut: sg_start: %p, sg_off: %u "
"sg_nents: %u from %p %u\n", sg_start, sg_off,
- sg_nents, &rx_desc->data[0], unsol_data_len);
+ sg_nents, isert_get_data(rx_desc), unsol_data_len);
- sg_copy_from_buffer(sg_start, sg_nents, &rx_desc->data[0],
+ sg_copy_from_buffer(sg_start, sg_nents, isert_get_data(rx_desc),
unsol_data_len);
rc = iscsit_check_dataout_payload(cmd, hdr, false);
@@ -1302,7 +1303,7 @@ isert_handle_text_cmd(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd
}
cmd->text_in_ptr = text_in;
- memcpy(cmd->text_in_ptr, &rx_desc->data[0], payload_length);
+ memcpy(cmd->text_in_ptr, isert_get_data(rx_desc), payload_length);
return iscsit_process_text_cmd(conn, cmd, hdr);
}
@@ -1312,7 +1313,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
uint32_t read_stag, uint64_t read_va,
uint32_t write_stag, uint64_t write_va)
{
- struct iscsi_hdr *hdr = &rx_desc->iscsi_header;
+ struct iscsi_hdr *hdr = isert_get_iscsi_hdr(rx_desc);
struct iscsi_conn *conn = isert_conn->conn;
struct iscsi_cmd *cmd;
struct isert_cmd *isert_cmd;
@@ -1410,8 +1411,8 @@ isert_recv_done(struct ib_cq *cq, struct ib_wc *wc)
struct isert_conn *isert_conn = wc->qp->qp_context;
struct ib_device *ib_dev = isert_conn->cm_id->device;
struct iser_rx_desc *rx_desc = cqe_to_rx_desc(wc->wr_cqe);
- struct iscsi_hdr *hdr = &rx_desc->iscsi_header;
- struct iser_ctrl *iser_ctrl = &rx_desc->iser_header;
+ struct iscsi_hdr *hdr = isert_get_iscsi_hdr(rx_desc);
+ struct iser_ctrl *iser_ctrl = isert_get_iser_hdr(rx_desc);
uint64_t read_va = 0, write_va = 0;
uint32_t read_stag = 0, write_stag = 0;
@@ -1425,7 +1426,7 @@ isert_recv_done(struct ib_cq *cq, struct ib_wc *wc)
rx_desc->in_use = true;
ib_dma_sync_single_for_cpu(ib_dev, rx_desc->dma_addr,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
isert_dbg("DMA: 0x%llx, iSCSI opcode: 0x%02x, ITT: 0x%08x, flags: 0x%02x dlen: %d\n",
rx_desc->dma_addr, hdr->opcode, hdr->itt, hdr->flags,
@@ -1460,7 +1461,7 @@ isert_recv_done(struct ib_cq *cq, struct ib_wc *wc)
read_stag, read_va, write_stag, write_va);
ib_dma_sync_single_for_device(ib_dev, rx_desc->dma_addr,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
}
static void
@@ -1474,8 +1475,8 @@ isert_login_recv_done(struct ib_cq *cq, struct ib_wc *wc)
return;
}
- ib_dma_sync_single_for_cpu(ib_dev, isert_conn->login_req_dma,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ ib_dma_sync_single_for_cpu(ib_dev, isert_conn->login_desc->dma_addr,
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
isert_conn->login_req_len = wc->byte_len - ISER_HEADERS_LEN;
@@ -1490,8 +1491,8 @@ isert_login_recv_done(struct ib_cq *cq, struct ib_wc *wc)
complete(&isert_conn->login_req_comp);
mutex_unlock(&isert_conn->mutex);
- ib_dma_sync_single_for_device(ib_dev, isert_conn->login_req_dma,
- ISER_RX_PAYLOAD_SIZE, DMA_FROM_DEVICE);
+ ib_dma_sync_single_for_device(ib_dev, isert_conn->login_desc->dma_addr,
+ ISER_RX_SIZE, DMA_FROM_DEVICE);
}
static void
@@ -2654,6 +2655,8 @@ static void isert_wait_conn(struct iscsi_conn *conn)
isert_put_unsol_pending_cmds(conn);
isert_wait4cmds(conn);
isert_wait4logout(isert_conn);
+
+ queue_work(isert_release_wq, &isert_conn->release_work);
}
static void isert_free_conn(struct iscsi_conn *conn)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 06:55:36 +0000