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path: root/drivers/target/tcm_fc/tfc_io.c
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Diffstat (limited to 'drivers/target/tcm_fc/tfc_io.c')
-rw-r--r--drivers/target/tcm_fc/tfc_io.c58
1 files changed, 26 insertions, 32 deletions
diff --git a/drivers/target/tcm_fc/tfc_io.c b/drivers/target/tcm_fc/tfc_io.c
index 837660728563..3563a9029c4a 100644
--- a/drivers/target/tcm_fc/tfc_io.c
+++ b/drivers/target/tcm_fc/tfc_io.c
@@ -68,17 +68,17 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
struct fc_frame *fp = NULL;
struct fc_exch *ep;
struct fc_lport *lport;
- struct se_mem *mem;
+ struct scatterlist *sg = NULL;
size_t remaining;
u32 f_ctl = FC_FC_EX_CTX | FC_FC_REL_OFF;
- u32 mem_off;
+ u32 mem_off = 0;
u32 fh_off = 0;
u32 frame_off = 0;
size_t frame_len = 0;
- size_t mem_len;
+ size_t mem_len = 0;
size_t tlen;
size_t off_in_page;
- struct page *page;
+ struct page *page = NULL;
int use_sg;
int error;
void *page_addr;
@@ -94,13 +94,12 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
/*
* Setup to use first mem list entry, unless no data.
*/
- BUG_ON(remaining && list_empty(&se_cmd->t_mem_list));
+ BUG_ON(remaining && !se_cmd->t_data_sg);
if (remaining) {
- mem = list_first_entry(&se_cmd->t_mem_list,
- struct se_mem, se_list);
- mem_len = mem->se_len;
- mem_off = mem->se_off;
- page = mem->se_page;
+ sg = se_cmd->t_data_sg;
+ mem_len = sg->length;
+ mem_off = sg->offset;
+ page = sg_page(sg);
}
/* no scatter/gather in skb for odd word length due to fc_seq_send() */
@@ -108,12 +107,10 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
while (remaining) {
if (!mem_len) {
- BUG_ON(!mem);
- mem = list_entry(mem->se_list.next,
- struct se_mem, se_list);
- mem_len = min((size_t)mem->se_len, remaining);
- mem_off = mem->se_off;
- page = mem->se_page;
+ sg = sg_next(sg);
+ mem_len = min((size_t)sg->length, remaining);
+ mem_off = sg->offset;
+ page = sg_page(sg);
}
if (!frame_len) {
/*
@@ -200,13 +197,13 @@ void ft_recv_write_data(struct ft_cmd *cmd, struct fc_frame *fp)
struct fc_exch *ep;
struct fc_lport *lport;
struct fc_frame_header *fh;
- struct se_mem *mem;
- u32 mem_off;
+ struct scatterlist *sg = NULL;
+ u32 mem_off = 0;
u32 rel_off;
size_t frame_len;
- size_t mem_len;
+ size_t mem_len = 0;
size_t tlen;
- struct page *page;
+ struct page *page = NULL;
void *page_addr;
void *from;
void *to;
@@ -288,23 +285,20 @@ void ft_recv_write_data(struct ft_cmd *cmd, struct fc_frame *fp)
/*
* Setup to use first mem list entry, unless no data.
*/
- BUG_ON(frame_len && list_empty(&se_cmd->t_mem_list));
+ BUG_ON(frame_len && !se_cmd->t_data_sg);
if (frame_len) {
- mem = list_first_entry(&se_cmd->t_mem_list,
- struct se_mem, se_list);
- mem_len = mem->se_len;
- mem_off = mem->se_off;
- page = mem->se_page;
+ sg = se_cmd->t_data_sg;
+ mem_len = sg->length;
+ mem_off = sg->offset;
+ page = sg_page(sg);
}
while (frame_len) {
if (!mem_len) {
- BUG_ON(!mem);
- mem = list_entry(mem->se_list.next,
- struct se_mem, se_list);
- mem_len = mem->se_len;
- mem_off = mem->se_off;
- page = mem->se_page;
+ sg = sg_next(sg);
+ mem_len = sg->length;
+ mem_off = sg->offset;
+ page = sg_page(sg);
}
if (rel_off >= mem_len) {
rel_off -= mem_len;